1. The document discusses modern looms used in weaving factories in Bangladesh, focusing on four main types: projectile looms, air jet looms, rapier looms, and water jet looms.
2. Projectile looms use small projectiles to carry the weft yarn through the shed, while air jet looms use compressed air to shoot the weft yarn through.
3. The document provides details on the operation and components of projectile looms, describing how the projectiles are launched through the shed and returned via guide rails, with the goal of high production speeds.
The document discusses water jet looms. It describes how water jet looms work by using a jet of water to insert the weft thread across the warp. This allows the looms to reach high production speeds of up to 2,000 picks per minute. The document outlines the key parts of a water jet loom and discusses their advantages in being quieter and more gentle on warp yarns compared to other loom types. However, it notes that water jet looms are best suited for hydrophobic fibers and cannot produce as wide a variety of fabrics.
A loom is a device used to produce weave fabrics . It's the central point of the whole process of fabric production. ... MODERN LOOM Modern loom means Shuttle less loom. Its development during the 20th century. Several types of modern loom have Come for industrial use.
Study on functions of different parts of circular knitting machine.pptx (1)SanyBarua
This document presents a study on the functions of different parts of a circular knitting machine. It begins with an introduction on circular knitting machines and the different types. It then discusses the various parts of a circular knitting machine, including needles, cylinder, cam, cam box, sinker, and VDQ pulley. For each part, it provides a brief description and image. The document concludes that modern machines now feature on-board computers to monitor and control important functions like speed and detect issues.
This document discusses jet weaving processes. In jet weaving, a fluid such as air or water is used to insert the weft yarn through the shed. For air jet weaving, compressed air is accelerated through a nozzle to provide the force to insert the weft. For water jet weaving, water is pressurized using pumps. Key factors that influence the tractive force on the weft include the velocity and viscosity of the fluid, the roughness of the weft yarn, and temperature. Modern jet looms can operate at high speeds up to 1500 picks per minute for water jet and even higher for air jet looms.
You can find the diffences between mechanical and electronical dobby mechanisms in principle in this presentation.
Also , you can reach the details of dobby mechanisms type like as of single , double and negative dobby systems.
The document discusses take-up mechanisms in weaving. It describes take-up motion as the process of withdrawing woven fabric from the weaving zone and winding it onto the cloth roller. There are two main types of take-up motions - positive and negative. Positive take-up directly drives the cloth roller via gear trains, while negative take-up uses a system of levers and weights to indirectly drive the roller. Specific take-up mechanisms like five-wheel and seven-wheel are also described, including their components and working principles. The document provides an overview of different take-up motions used in weaving to uniformly wind the fabric.
The document summarizes a presentation on circular knitting machines. It discusses the types of knitting machines, listing circular knitting machines as widely used. It provides examples of brand names and origins of circular knitting machines. It then describes the key parts of a circular knitting machine, including the creel, VDQ pulley, cam, needles, sinker, and lubricant. It concludes that knitting and circular knitting machines are important for textile manufacturing.
Picking Mechanism | Beat Up Mechanism | Over Picking Under Picking MechanismMd Rakibul Hassan
The document discusses weaving technology and describes different mechanisms involved. It focuses on picking and beat-up mechanisms. Picking inserts the weft thread through the warp shed and can be bidirectional or unidirectional. Beat-up drives the inserted weft to the fell of the cloth. There are different types of picking (over, under) and beat-up (single, double, cam) mechanisms that are suited to different fabric weights and loom styles. Faults like early/late picking and factors influencing beat-up force are also covered.
The document discusses water jet looms. It describes how water jet looms work by using a jet of water to insert the weft thread across the warp. This allows the looms to reach high production speeds of up to 2,000 picks per minute. The document outlines the key parts of a water jet loom and discusses their advantages in being quieter and more gentle on warp yarns compared to other loom types. However, it notes that water jet looms are best suited for hydrophobic fibers and cannot produce as wide a variety of fabrics.
A loom is a device used to produce weave fabrics . It's the central point of the whole process of fabric production. ... MODERN LOOM Modern loom means Shuttle less loom. Its development during the 20th century. Several types of modern loom have Come for industrial use.
Study on functions of different parts of circular knitting machine.pptx (1)SanyBarua
This document presents a study on the functions of different parts of a circular knitting machine. It begins with an introduction on circular knitting machines and the different types. It then discusses the various parts of a circular knitting machine, including needles, cylinder, cam, cam box, sinker, and VDQ pulley. For each part, it provides a brief description and image. The document concludes that modern machines now feature on-board computers to monitor and control important functions like speed and detect issues.
This document discusses jet weaving processes. In jet weaving, a fluid such as air or water is used to insert the weft yarn through the shed. For air jet weaving, compressed air is accelerated through a nozzle to provide the force to insert the weft. For water jet weaving, water is pressurized using pumps. Key factors that influence the tractive force on the weft include the velocity and viscosity of the fluid, the roughness of the weft yarn, and temperature. Modern jet looms can operate at high speeds up to 1500 picks per minute for water jet and even higher for air jet looms.
You can find the diffences between mechanical and electronical dobby mechanisms in principle in this presentation.
Also , you can reach the details of dobby mechanisms type like as of single , double and negative dobby systems.
The document discusses take-up mechanisms in weaving. It describes take-up motion as the process of withdrawing woven fabric from the weaving zone and winding it onto the cloth roller. There are two main types of take-up motions - positive and negative. Positive take-up directly drives the cloth roller via gear trains, while negative take-up uses a system of levers and weights to indirectly drive the roller. Specific take-up mechanisms like five-wheel and seven-wheel are also described, including their components and working principles. The document provides an overview of different take-up motions used in weaving to uniformly wind the fabric.
The document summarizes a presentation on circular knitting machines. It discusses the types of knitting machines, listing circular knitting machines as widely used. It provides examples of brand names and origins of circular knitting machines. It then describes the key parts of a circular knitting machine, including the creel, VDQ pulley, cam, needles, sinker, and lubricant. It concludes that knitting and circular knitting machines are important for textile manufacturing.
Picking Mechanism | Beat Up Mechanism | Over Picking Under Picking MechanismMd Rakibul Hassan
The document discusses weaving technology and describes different mechanisms involved. It focuses on picking and beat-up mechanisms. Picking inserts the weft thread through the warp shed and can be bidirectional or unidirectional. Beat-up drives the inserted weft to the fell of the cloth. There are different types of picking (over, under) and beat-up (single, double, cam) mechanisms that are suited to different fabric weights and loom styles. Faults like early/late picking and factors influencing beat-up force are also covered.
The document discusses multiphase weaving machines. It describes two principles of multiphase weaving: the filling direction shed wave principle and the warp direction shed wave principle. The filling direction principle involves forming multiple sheds in the filling direction to allow simultaneous insertion of multiple wefts. The warp direction principle involves opening multiple sheds simultaneously across the warp width. It then focuses on the M8300 multiphase weaving machine, which uses the warp direction principle to insert 4 picks simultaneously at speeds over 5000 m/min, significantly faster than single phase machines.
The compact spinning is a process where fiber strand drawn by drafting system is condensed before twisting it.Following methods are used by machine manufacturers to condense the fiber strand.
1. Aerodynamic condensing.
2. Mechanical condensing.
3. Magnetic condensing.
Compact spinning has a promising future because of the higher production and improved quality of compact yarns
This document discusses advanced weaving technology, including different types of looms. It compares shuttle looms with shuttleless modern looms. Shuttle looms are cheaper but have disadvantages like requiring pirn winding, uncontrolled shuttle speed, and limited width. Modern looms have higher costs but allow for higher speeds, wider fabrics, and better quality control. Key components of modern looms discussed include weft accumulators, which help regulate weft tension, and different types of selvedges along the fabric edges.
Knitting Technology | Study On Knitting Technology | Sweater/ V-bed Flat Knit...Md Rakibul Hassan
This document discusses knitting technology and the features of V-bed flat knitting machines. It describes two types of knitwear production: cut and sewing, and fully fashioned. Fully fashioned knitwear shapes portions of the garment during knitting by increasing or decreasing loops along the selvedges. A V-bed flat knitting machine has two stationary needle beds and uses latch needles. Different fabrics like single jersey, ribbing, and cardigan stitches can be produced by activating different needle bed cams. Shaping is done through widening by adding needles or narrowing by removing needles to transfer loops.
This document summarizes the key differences between ring spinning and rotor spinning systems. Rotor spinning is a more recent open-end spinning method that introduces twist without requiring package rotation. It has higher productivity and handles larger packages than ring spinning. While rotor yarn is weaker, it has better evenness and abrasion resistance. The document provides details on the rotor spinning process and machine parts and compares performance characteristics of ring and rotor yarns.
The beating-up mechanism is used in weaving to push the newly inserted weft pick to the fell of the cloth. It consists of a reed fixed to a sley that is given a quick motion towards the fell by cranks connected to a crankshaft. The main parts include the crankshaft, crank, connecting arm, reed cap, reed, sley race, sley, and sleysword. The sley receives a reciprocating motion from the rotating crankshaft via the crank and connecting arm, which pushes the reed and new weft pick to the fell. Some looms use a double beating-up mechanism with two arms to give two blows per
This document summarizes the differences between feeder stripes, engineering stripes, and auto stripes in knitted fabrics. It explains that:
Feeder stripes are small repeating patterns less than 1.9 inches that can be produced on most circular knitting machines at low cost. Engineering stripes are large non-repeating patterns across the whole garment produced using special finger devices that increase costs. Auto stripes are repeating patterns greater than 1.9 inches that require computers and special finger machines, resulting in higher costs than feeder stripes. The document also discusses when auto stripes are needed over feeder stripes and the invention of multi-feeder machines to reduce auto stripe machine use.
The winding process involves transferring yarn from a smaller package to a larger package. There are two main objectives - to convert a smaller package into a larger package containing a long length of yarn, and to remove impurities from the yarn. The basic mechanisms of the winding process are unwinding, tensioning, yarn clearing, package building, and lubrication. Tensioning devices like multiplicative, additive, and disc types are used to provide the required winding tension. Yarn clearer devices remove faults from the yarn like thick and thin places. Package formation involves winding the yarn around the package using either a spindle or drum winder to build the package.
This document discusses the parts and functions of a circular knitting machine. It outlines 23 main parts of the machine including the creel, pulley belt, tension disk, inlet and outlet stop motion, yarn guide, MPF wheel, MPF, feeder ring, disk drum, pattern wheel, feeder, needle track, needle, sinker, sinker ring, cam box, cam, Lycra attachment device, Lycra stop motion, cylinder, cylinder balancer, and air gun nozzle. It provides a brief description of the purpose and function of several key parts like the creel, VDQ pulley, tension disk, MPF, feeder, needle, and sinker. The objective is to understand how
This document provides information about the single jersey knitting machine used in the Fabric Manufacturing Technology Lab. It describes the key parts of the machine including the latch needles, cams, sinkers, cylinder, creel, and yarn path. It also provides specifications for the cylinder such as a diameter of 15 inches and gauge of 25. The machine produces plain knitted fabrics and the document aims to provide an understanding of how a single jersey machine functions.
Needle loop refers to the upper part of the knitted loop formed by the needle drawing yarn. There are three main types of needles used. Sinker loop refers to the lower part that connects two adjacent needle loops in the same course.
Sinker is a thin metal plate that assists with loop formation, holding loops down, and pushing fabric forward between needle movements. It plays an important role in restricting loop movement and supporting the fabric.
Needle loop and sinker loop are the two vital components that make up each stitch in knitting and understanding the difference between them is important for knitting technology.
Describe the spreader and softener m/cMdBiplobMia4
This document describes the softening and spreading processes used in jute production. Softening involves treating jute fibers with an emulsion to make them softer, more flexible and cohesive. The emulsion is a mixture of oil, water and emulsifier. Softening is done using a softener machine with multiple roller pairs or a spreader machine with slow and fast chains that comb and draft the fibers while applying emulsion. The softener machine grips and beats fibers with spiral rollers while the spreader machine applies more drafting and controls emulsion application better. The softener machine treats loose fibers while the spreader machine processes fibers into a specific length and weight.
The document discusses the rapier loom, a type of shuttleless weaving loom. A rapier loom uses finger-like carriers called rapiers to pull the weft yarn across the loom between the warp yarns. There are two main types - single rigid rapier looms, which use one long rapier across the full width, and double rigid rapier looms, which use two rapiers entering from opposite sides to transfer the weft yarn. Rapier looms can operate at high speeds up to 1300 meters of weft per minute. They are flexible and can weave a wide range of fabrics from light to heavy weights.
This document discusses different types of shedding mechanisms used in looms: crank, tappet, dobby, and jacquard. It explains how each works and their features. Crank is the simplest but can only produce plain weaves. Tappet controls 2-8 heald frames for simple weaves. Dobby controls more frames for medium complexity weaves. Jacquard is the most complex but can produce all fabric types by controlling thousands of heald frames individually. The timing of shed opening, early vs late, also affects weaving properties.
Air jet looms use compressed air to propel weft yarn across the warp yarn at rates up to 2850 meters per minute, allowing for multicolor weft insertion of up to 6 colors. Air jet looms have advantages like bidirectional computer communication, automatic pick repair, and controls on weft insertion timing, but their main disadvantage is higher power consumption due to compressed air use.
The document provides details about various parts of a loom and their functions. It discusses the basic mechanisms in any loom including primary motions (shedding, picking and beat up), secondary motions (take up and let off), and auxiliary motions (warp stop, weft stop and warp protector). It describes the general passage of warp through a loom and important loom parts like heald shaft, sley, shuttle, shuttle box, picker, reed, warp beam and back beam. The heald shaft helps in shed formation and maintaining order of warp threads. The sley is responsible for pushing the last pick of weft to the fell of cloth. The shuttle carries the weft through shed. The reed maintains position of warp
This document discusses different types of picking and picking mechanisms used in weaving. It begins with an introduction to picking, which is the process of passing the weft yarn through the warp shed during weaving. It then describes various picking mechanisms including overpicking, underpicking, and cone overpick and underpick mechanisms. The document provides details on how these different mechanisms work to insert the weft yarn through the shed. It concludes with advantages and disadvantages of different weft insertion methods like projectile, rapier, air jet, and water jet looms.
1. The three primary elements of knitting are the needle, cam, and sinker.
2. The needle is the main knitting tool that rises and receives new loops. There are three types of needles.
3. The cam is a mechanical device that converts rotary motion into reciprocating motion for the needles. There are engineering cams and knitting cams which include knit, tuck, and miss cams.
4. The sinker is a thin metal plate that acts between needles to form, hold down, and knock over loops.
The document discusses combing preparatory processes. It describes the need for combing preparatory, which includes fiber straightening, reversing fiber flow, and producing a flat sliver. Traditionally, this involved a sliver lap machine and ribbon lap machine, but now mostly uses a draw frame and sliver lap machine. The objectives of combing preparatory are to straighten fibers, reverse flow, maximize leading fiber hooks, and produce a flat sliver. Different machine types and their functions are explained, including parameters that influence the combing operation and quality of the finished product.
This document compares conventional looms to modern looms, focusing on shuttle looms, projectile looms, and rapier looms. Shuttle looms are the oldest type but are slow and noisy. Projectile looms insert weft using a bullet-like projectile and have advantages like higher speeds, less wear on threads, and ability to weave multiple fabrics at once. Rapier looms insert weft using rigid or flexible rapiers and gripper heads, allowing for high insertion rates but also potential for more yarn breaks if not properly tensioned. Modern looms like projectile and rapier looms offer improvements over conventional shuttle looms through technological refinements.
Loom is a machine used for weaving fabric by interlacing warp and weft threads. Looms have evolved over thousands of years from simple wooden hand looms to modern power looms driven by electricity. Key developments include the fly shuttle in 1733, Cartwright's power loom in 1785, individual electric motor drives in the 1930s, and modern automated looms with features like projectile, rapier, and air jet weft insertion systems. The complete weaving process involves preparing warp threads, designing the pattern, dyeing yarn, winding the warp, threading the loom, weaving, and finishing the fabric.
The document discusses multiphase weaving machines. It describes two principles of multiphase weaving: the filling direction shed wave principle and the warp direction shed wave principle. The filling direction principle involves forming multiple sheds in the filling direction to allow simultaneous insertion of multiple wefts. The warp direction principle involves opening multiple sheds simultaneously across the warp width. It then focuses on the M8300 multiphase weaving machine, which uses the warp direction principle to insert 4 picks simultaneously at speeds over 5000 m/min, significantly faster than single phase machines.
The compact spinning is a process where fiber strand drawn by drafting system is condensed before twisting it.Following methods are used by machine manufacturers to condense the fiber strand.
1. Aerodynamic condensing.
2. Mechanical condensing.
3. Magnetic condensing.
Compact spinning has a promising future because of the higher production and improved quality of compact yarns
This document discusses advanced weaving technology, including different types of looms. It compares shuttle looms with shuttleless modern looms. Shuttle looms are cheaper but have disadvantages like requiring pirn winding, uncontrolled shuttle speed, and limited width. Modern looms have higher costs but allow for higher speeds, wider fabrics, and better quality control. Key components of modern looms discussed include weft accumulators, which help regulate weft tension, and different types of selvedges along the fabric edges.
Knitting Technology | Study On Knitting Technology | Sweater/ V-bed Flat Knit...Md Rakibul Hassan
This document discusses knitting technology and the features of V-bed flat knitting machines. It describes two types of knitwear production: cut and sewing, and fully fashioned. Fully fashioned knitwear shapes portions of the garment during knitting by increasing or decreasing loops along the selvedges. A V-bed flat knitting machine has two stationary needle beds and uses latch needles. Different fabrics like single jersey, ribbing, and cardigan stitches can be produced by activating different needle bed cams. Shaping is done through widening by adding needles or narrowing by removing needles to transfer loops.
This document summarizes the key differences between ring spinning and rotor spinning systems. Rotor spinning is a more recent open-end spinning method that introduces twist without requiring package rotation. It has higher productivity and handles larger packages than ring spinning. While rotor yarn is weaker, it has better evenness and abrasion resistance. The document provides details on the rotor spinning process and machine parts and compares performance characteristics of ring and rotor yarns.
The beating-up mechanism is used in weaving to push the newly inserted weft pick to the fell of the cloth. It consists of a reed fixed to a sley that is given a quick motion towards the fell by cranks connected to a crankshaft. The main parts include the crankshaft, crank, connecting arm, reed cap, reed, sley race, sley, and sleysword. The sley receives a reciprocating motion from the rotating crankshaft via the crank and connecting arm, which pushes the reed and new weft pick to the fell. Some looms use a double beating-up mechanism with two arms to give two blows per
This document summarizes the differences between feeder stripes, engineering stripes, and auto stripes in knitted fabrics. It explains that:
Feeder stripes are small repeating patterns less than 1.9 inches that can be produced on most circular knitting machines at low cost. Engineering stripes are large non-repeating patterns across the whole garment produced using special finger devices that increase costs. Auto stripes are repeating patterns greater than 1.9 inches that require computers and special finger machines, resulting in higher costs than feeder stripes. The document also discusses when auto stripes are needed over feeder stripes and the invention of multi-feeder machines to reduce auto stripe machine use.
The winding process involves transferring yarn from a smaller package to a larger package. There are two main objectives - to convert a smaller package into a larger package containing a long length of yarn, and to remove impurities from the yarn. The basic mechanisms of the winding process are unwinding, tensioning, yarn clearing, package building, and lubrication. Tensioning devices like multiplicative, additive, and disc types are used to provide the required winding tension. Yarn clearer devices remove faults from the yarn like thick and thin places. Package formation involves winding the yarn around the package using either a spindle or drum winder to build the package.
This document discusses the parts and functions of a circular knitting machine. It outlines 23 main parts of the machine including the creel, pulley belt, tension disk, inlet and outlet stop motion, yarn guide, MPF wheel, MPF, feeder ring, disk drum, pattern wheel, feeder, needle track, needle, sinker, sinker ring, cam box, cam, Lycra attachment device, Lycra stop motion, cylinder, cylinder balancer, and air gun nozzle. It provides a brief description of the purpose and function of several key parts like the creel, VDQ pulley, tension disk, MPF, feeder, needle, and sinker. The objective is to understand how
This document provides information about the single jersey knitting machine used in the Fabric Manufacturing Technology Lab. It describes the key parts of the machine including the latch needles, cams, sinkers, cylinder, creel, and yarn path. It also provides specifications for the cylinder such as a diameter of 15 inches and gauge of 25. The machine produces plain knitted fabrics and the document aims to provide an understanding of how a single jersey machine functions.
Needle loop refers to the upper part of the knitted loop formed by the needle drawing yarn. There are three main types of needles used. Sinker loop refers to the lower part that connects two adjacent needle loops in the same course.
Sinker is a thin metal plate that assists with loop formation, holding loops down, and pushing fabric forward between needle movements. It plays an important role in restricting loop movement and supporting the fabric.
Needle loop and sinker loop are the two vital components that make up each stitch in knitting and understanding the difference between them is important for knitting technology.
Describe the spreader and softener m/cMdBiplobMia4
This document describes the softening and spreading processes used in jute production. Softening involves treating jute fibers with an emulsion to make them softer, more flexible and cohesive. The emulsion is a mixture of oil, water and emulsifier. Softening is done using a softener machine with multiple roller pairs or a spreader machine with slow and fast chains that comb and draft the fibers while applying emulsion. The softener machine grips and beats fibers with spiral rollers while the spreader machine applies more drafting and controls emulsion application better. The softener machine treats loose fibers while the spreader machine processes fibers into a specific length and weight.
The document discusses the rapier loom, a type of shuttleless weaving loom. A rapier loom uses finger-like carriers called rapiers to pull the weft yarn across the loom between the warp yarns. There are two main types - single rigid rapier looms, which use one long rapier across the full width, and double rigid rapier looms, which use two rapiers entering from opposite sides to transfer the weft yarn. Rapier looms can operate at high speeds up to 1300 meters of weft per minute. They are flexible and can weave a wide range of fabrics from light to heavy weights.
This document discusses different types of shedding mechanisms used in looms: crank, tappet, dobby, and jacquard. It explains how each works and their features. Crank is the simplest but can only produce plain weaves. Tappet controls 2-8 heald frames for simple weaves. Dobby controls more frames for medium complexity weaves. Jacquard is the most complex but can produce all fabric types by controlling thousands of heald frames individually. The timing of shed opening, early vs late, also affects weaving properties.
Air jet looms use compressed air to propel weft yarn across the warp yarn at rates up to 2850 meters per minute, allowing for multicolor weft insertion of up to 6 colors. Air jet looms have advantages like bidirectional computer communication, automatic pick repair, and controls on weft insertion timing, but their main disadvantage is higher power consumption due to compressed air use.
The document provides details about various parts of a loom and their functions. It discusses the basic mechanisms in any loom including primary motions (shedding, picking and beat up), secondary motions (take up and let off), and auxiliary motions (warp stop, weft stop and warp protector). It describes the general passage of warp through a loom and important loom parts like heald shaft, sley, shuttle, shuttle box, picker, reed, warp beam and back beam. The heald shaft helps in shed formation and maintaining order of warp threads. The sley is responsible for pushing the last pick of weft to the fell of cloth. The shuttle carries the weft through shed. The reed maintains position of warp
This document discusses different types of picking and picking mechanisms used in weaving. It begins with an introduction to picking, which is the process of passing the weft yarn through the warp shed during weaving. It then describes various picking mechanisms including overpicking, underpicking, and cone overpick and underpick mechanisms. The document provides details on how these different mechanisms work to insert the weft yarn through the shed. It concludes with advantages and disadvantages of different weft insertion methods like projectile, rapier, air jet, and water jet looms.
1. The three primary elements of knitting are the needle, cam, and sinker.
2. The needle is the main knitting tool that rises and receives new loops. There are three types of needles.
3. The cam is a mechanical device that converts rotary motion into reciprocating motion for the needles. There are engineering cams and knitting cams which include knit, tuck, and miss cams.
4. The sinker is a thin metal plate that acts between needles to form, hold down, and knock over loops.
The document discusses combing preparatory processes. It describes the need for combing preparatory, which includes fiber straightening, reversing fiber flow, and producing a flat sliver. Traditionally, this involved a sliver lap machine and ribbon lap machine, but now mostly uses a draw frame and sliver lap machine. The objectives of combing preparatory are to straighten fibers, reverse flow, maximize leading fiber hooks, and produce a flat sliver. Different machine types and their functions are explained, including parameters that influence the combing operation and quality of the finished product.
This document compares conventional looms to modern looms, focusing on shuttle looms, projectile looms, and rapier looms. Shuttle looms are the oldest type but are slow and noisy. Projectile looms insert weft using a bullet-like projectile and have advantages like higher speeds, less wear on threads, and ability to weave multiple fabrics at once. Rapier looms insert weft using rigid or flexible rapiers and gripper heads, allowing for high insertion rates but also potential for more yarn breaks if not properly tensioned. Modern looms like projectile and rapier looms offer improvements over conventional shuttle looms through technological refinements.
Loom is a machine used for weaving fabric by interlacing warp and weft threads. Looms have evolved over thousands of years from simple wooden hand looms to modern power looms driven by electricity. Key developments include the fly shuttle in 1733, Cartwright's power loom in 1785, individual electric motor drives in the 1930s, and modern automated looms with features like projectile, rapier, and air jet weft insertion systems. The complete weaving process involves preparing warp threads, designing the pattern, dyeing yarn, winding the warp, threading the loom, weaving, and finishing the fabric.
This document discusses different types of weaving machines, including multiphase weaving machines. It describes wave shed and parallel shed multiphase looms. Wave shed looms have shuttles that travel in straight or circular paths, while parallel shed looms form successive parallel sheds across the warp. The fastest weaving machine is the Sulzer M8300 multiphase loom, which can produce up to 1500 meters of fabric per day at a production cost 25-30% lower than single phase looms.
Multiphase looms overcome limitations of single phase looms by forming multiple sheds across the fabric width simultaneously, allowing multiple weft yarns to be inserted in parallel. They are classified as parallel shed or wave shed looms depending on whether they form sheds in the warp or weft direction. Parallel shed looms form sheds parallel to each other in the warp direction, while wave shed looms form a shed wave in the weft direction using circular or flat machine designs. Multiphase looms allow higher production rates than single phase looms of up to 5000 meters per minute.
Unit 5.1.2 5.1.3 ppt.pptx python extra workReshmiShaw2
Weaving involves interlacing two sets of yarns called warp and weft to form fabric. Preparation of these yarns for weaving involves processes like winding, warping, and sizing. Warp yarns require more preparation as they experience greater stresses during weaving. Weaving is done on handlooms or powerlooms. Handlooms are operated manually while powerlooms are mechanized and increase production speed. Common weaving techniques include throw shuttle, fly shuttle, and rapier looms.
This slide is about the historical development of loom
Weaving machine
Loom machine
History of loom
Horizontal loom
Vertical loom
Chronological loom
Pit loom
Frame loom
Automatic loom
Power loom
Modern loom
Air jet loom
Water loom
projectile loom
Rapier loom
Multiphase loom
Textile engineering
1) Multiphase weaving incorporates two principles - filling direction shed wave principle and warp direction shed wave principle. It allows for multiple sheds to be opened simultaneously across the width of the fabric for high speed weft insertion.
2) There are two types of multiphase looms - circular and flat. Circular looms use an electromagnetic or rack and pinion system to drive the shuttle in a circular motion. Flat looms form multiple linear sheds across the width.
3) New developments in multiphase looms include the use of air jet nozzles to insert multiple wefts simultaneously and oscillating reeds that help drive the weft carriers and perform beat-up. Modular designs
The document summarizes projectile weaving, which uses gripper projectiles to insert weft threads into warp threads. Key points:
- Projectile weaving machines were invented in 1924 and introduced commercially in 1953. They use small, bullet-like projectiles to insert weft threads at high speeds up to 1500 picks per minute.
- Projectile looms produce fabrics with good quality at high efficiency and low energy use. They can weave a wide variety of yarns from fine to coarse.
- The projectile is propelled through the warp shed using stored energy from a twisted metal torsion bar, allowing very high insertion speeds. It grips the weft securely and deposits it without
The document discusses various weaving processes and advancements in weft insertion systems. It describes the basic weaving process involving warp let-off, shedding, picking, beating, and fabric take-up. It then summarizes different weft insertion systems including projectile, rapier, air-jet, water-jet, and multiphase weaving machines. Projectile weaving was the first successful shuttleless system. Rapier weaving uses rigid or flexible rapiers to insert the weft. Air-jet and water-jet use compressed fluids to carry the weft yarn. Multiphase weaving forms multiple sheds simultaneously to increase production rates.
Modern Weaving Technology was presented by Ghulam Mustafa and Sagar Sarker. The document discussed traditional weaving technologies like the back strap loom, warp-weighted loom, draw loom, handloom, flying shuttle, and power loom. It then described modern looms like the rapier, projectile, water jet, air jet, and multiphase looms. The various looms were compared in terms of speed, weft insertion technique, and applications. Global weaving equipment market trends and major players in the market were also mentioned.
This presentation compares conventional and modern looms. Conventional looms operate more slowly with lower production capacity, while modern looms operate faster with higher output. Conventional looms are manually operated, while modern looms use electric power. Modern looms allow for more design variety and improved safety systems compared to conventional looms. Specific modern loom types discussed include rapier, air jet, water jet, and projectile looms, which utilize different automated processes for inserting the weft through the warp shed.
It is a fully informative presentation slide about Modern Loom. Here we discussed about Modern Loom, Types & details of every types with figure and video.
The document summarizes different types of warp knitting machines. It describes the first weft and warp knitting machines invented in the late 1500s and 1700s. It then discusses developments in warp knitting machines including higher speeds, finer gauges, wider machines, and more electronic components. It provides details on tricot machines, raschel machines, and crochet machines. For each machine type, it explains the basic knitting action and differences between the machines.
The document discusses rotor spinning technology. It describes the key tasks of a rotor spinning machine including opening fibers, cleaning, homogenizing, combining, ordering, improving evenness, imparting strength, and winding. It provides a historical overview of rotor spinning development from the 1930s to present day. It then details the major components and processes involved, including fiber feeding, separation and transport, fiber collection and alignment on the rotor, yarn formation through twist insertion, and yarn take-off and winding. The principles of rotor spinning and factors that influence yarn twist and quality are also summarized.
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This document provides information about different types of modern looms. It begins with introducing the presenters and then defines a loom as a device used for weaving fabrics. It proceeds to describe several types of modern shuttleless looms - rapier, air jet, water jet, and projectile looms. For each loom type, it discusses their key features, mechanisms, advantages, and applications. Multiphase looms, which allow continuous weft insertion through ever-changing warp sheds, are also briefly covered.
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The document discusses different types of looms used in weaving fabrics. It describes primitive looms like the vertical loom and pit loom. It then covers the development of powered looms using various energy sources like water, steam, diesel and electricity. The key components and motions of looms are explained, including shedding mechanisms like tappet, dobby and jacquard shedding. Tappet shedding is discussed in detail, outlining its working principle, advantages and limitations.
The document discusses different types of looms and their weft insertion mechanisms, including projectile looms, rapier looms, air jet looms, and multiphase looms. It describes the torsion bar picking mechanism of projectile looms and covers topics like weft insertion, selvedges, classifications of double rapier looms, air treatment systems for air jet looms, and calculations for fabric and yarn production.
The document discusses the basic structure and functions of a weaving loom. It describes the major components of a loom including the warp beam, heddles, harnesses, shuttle, reed, and cloth roller. It explains the primary motions of shedding, picking, and beating-up that are required to produce fabric. Secondary motions like take-up and let-off are also discussed. The document provides diagrams of loom parts and motions to illustrate how yarns are interlaced to form woven fabric on the machine.
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Present Condition/Scenario of Modern Loom in Bangladesh
1. GREEN UNIVERSITY OF BANGLADESH
Department Of Textile
ASSIGNMENT
Remarks:
Course Code : TE 302
Course Title : Fabric Manufacturing II
Submitted By:
Name : Md Rakibul Hassan
ID : 183014057
Section : E1
Department : Textile
Date Of Submission : 19-09-2020
Assignment Topic : Present Condition/Scenario of Modern Loom in
Bangladesh.
Submitted to:
Name : Ms. Suraiya Ireen
Designation : Lecturer
Department : Textile
2. Present Condition / Scenario Of Modern Loom In Bangladesh
Introduction:
In weaving technology, modern looms means shuttle less loom. During the 20th century, this type of
loom machine has started to develop. There are various types of modern loom machines used in
weaving factory. Modern looms still weave by repeating in sequence the operations of shedding,
picking, and beating in, but within that framework there has been considerable development during
the 20th century. Several new types of loom have come into industrial use, whereas older types have
been refined and their scope extended. Two main influences have been the rising cost of labour and
the increasing use of synthetic continuous-filament yarns. The first has led to an increase in automatic
control, in automatic handling of yarn packages, and in the use of larger packages; the second, to
greater precision and finish in loom construction, because deficiency in these qualities is readily
reflected in the quality of the cloth made from these yarns.
Modern looms can be grouped into two classes according to whether they produce cloth in plane or
tubular form. Looms of the first kind, comprising all but a few, are called flat looms; the others are
described as circular. Since the majority are flat looms, the adjective is used only when a distinction
has to be drawn. Flat looms fall into two categories: those that employ a shuttle and those that draw
the weft from a stationary supply, usually called shuttleless looms. (This term is not entirely
satisfactory, as some primitive looms make no use of a shuttle, merely passing through the shed a
stick with weft wound on it.) Shuttle looms fall into two groups according to whether the shuttle is
replenished by hand or automatically. The second kind is often described as an automatic loom, but,
except for shuttle replenishment, it is no more automatic in its operation than the hand-replenished or
so-called nonautomatic loom, which, like all modern looms, is power-operated by electric motor.
With both types of loom the actual weaving operation is entirely automatic and is performed in exactly
the same manner.
Hand-replenished, or nonautomatic, looms are used only where particular circumstances—of yarns,
fabrics, or use—make automatically replenished looms either technically unsuitable or uneconomic.
Basically, they differ little from the power looms of the latter half of the 19th century. They do not
run appreciably faster but are better engineered, making use, for example, of machine-cut instead of
cast gear wheels. Often there is no superstructure, which makes for cleanliness and improved
illumination; frequently rigid heddle connectors are employed, leading to precise and stable setting
of the shed; and usually the overpick mechanism has been replaced by the cleaner and safer underpick.
Automatically replenished flat, or automatic, looms are the most important class of modern loom,
available for a very wide range of fabrics. In virtually all such looms, the shuttle is replenished by
automatically replacing the exhausted bobbin with a full one. In principle they are thus the same as
the automatic looms introduced at the end of the 19th century. Since that time, automatic shuttle-
changing looms have also been introduced but have largely become obsolete, because bobbin-
changing looms have been developed to a point where they can deal with most of the yarns for which
it was once thought necessary to use shuttle-changing looms.
Classification of Modern Loom:
Modern loom or shuttle less loom has classified into four types, those are-
1. Projectile loom,
2. Air jet loom,
3. Rapier loom,
4. Water Jet loom.
3. 1. Projectile Loom:
Projectile loom is a shuttle less loom. It is sometimes called missile loom as the picking action is done
by a series of small bullet like projectiles which hold the weft yarn and carry it through the shed and
then return empty. Projectile loom has a high speed production than the rapier loom.
The projectile weaving machine made its appearance in the market at the beginning of the 50’s and
is today still used in the whole world. Thanks to its steady renovation and to the use of advanced
electronic systems as well as of microprocessors for the supervision and the control of the various
devices, this machine is characterized by a good productivity level (450 rpm and 1050 m/min of
inserted weft) and by high operational reliability. It is established especially in the field of machines
with high reed width.
Fig: Projectile loom
General Operation:
In this weaving machine the weft insertion is carried out by small clamp projectiles, which number
depends on the weaving width and which with their grippers take out the weft yarn from big cross-
wound bobbins and insert it into the shed always in the same direction. The projectiles work in
sequence, that is they are launched in succession. They run therefore one after the other, describing
in the space a continuous, endless route, as if they would be stuck on a conveyor belt.
The first projectile takes and holds in its back the weft in form of a tail; then, pushed by the release
of the projectile thrower, it passes through the shed and deposits the weft inside the warp;
subsequently the projectile falls and is collected by a device which, by passing under the array of the
warp threads, takes it at reduced speed back to the starting point. Here the projectile goes up to take
up a new weft; meanwhile the other projectiles have run after each other making the same operation.
Projectile Guide:
The limited weight and the reduced volume of the projectile make a projectile guide necessary . The
projectiles therefore do not come into contact with the threads, but run inside a sort of channel
composed of the thin prongs of a rake, which form reminds a semiclosed hand. This rake goes up
from under the threads at the moment of the projectile launch and has of course to fall back lowering
itself at the slay stroke. To enable this movement, the rake is secured on the slay and is positioned
very close to the reed; the rake’s laminas are not in contact with the warp, or touch it very lightly
because the reed opens them the way. The latest models of the projectile machine have been equipped
with new types of guide dents, which are divided and placed in alternate position, in order to reduce
the stress on weft and warp threads. This permits to use in warp even very delicate yarns as for
4. instance untwisted or entangled yarns and at the same time to cope with high quality requirements.
Projectile Launching Mechanism:
The operational principle of the launching mechanism is the following a torsion bar 2 is anchored, at
one side, to the fixed point 1, whereas the free end is connected by a toothed groove to the percussion
shaft 3. The percussion lever 9, which is fixed to the percussion shaft 3, follows per force the
movements of this last and consequently of the free end of the torsion bar 2. During its rotation, the
cam 8 shifts the knee-joint lever 4+5, so that the torsion bar 2 is put under tension by the percussion
shaft 3 and the percussion lever 9 is put in launching position (the scheme shows the launching
mechanism with the torsion bar in the phase of maximum tension). The torsion bar 2 remains under
tension until the roller 7 slides along the bend of lever 5. The particular shape of this lever makes so
that the roller, when leaving it, presses its end, thus giving the starting point to the torsion bar for the
articulation of the knee-joint lever 4+5. Subsequently the torsion bar 2 returns suddenly to its rest
position imparting a strong acceleration to the projectile 11 through the percussion shaft 3 , the
percussion lever 9 and the percussion element 10. The oil brake 6 serves to damp the stroke.
Features Of Projectile Loom:
• Accommodator used reduce tension
• Power consumption is less (3 kw-hrs.)
• No.of projectile 11 to 17
• Width minimum 190 cm
• Width maximum 540 cm Multiple fabric produce
• Double beam single fabric can be produced in projectile
Advantages Of Projectile Loom:
• Fashionable fabric may produce
• Drawing-in pinning of drop wires and knotting are accepted prectice
• The west and warp stop motions actuate first and reliable
• Simple to operate and maintain
• Two or three cloths can be woven simultaneously.
• It is possible to achieve weaving performances with breakage rate per square meter of cloth.
50% of the number of breaks that would occur on a conventional loom
• Since the projectile is passing through guides there is no reed to projectile or projectile to yarn
contact.
Three Cases Are Possible:
1. Position I (normal projectile position): the control co-ordinates S of sensors 1 and 3 are covered
by the projectile;
2. Position II (projectile too far penetrated / insufficient braking): the control co-ordinate S of sensor
III is not covered;
3. Position III (projectile insufficiently penetrated / excessive braking): the control coordinate S of
sensor 3 is not covered.
2. Air Jet Loom:
The air jet weaving machine combines high performance with low manufacturing requirements. It
has an extremely high insertion rate. Due to its exceptional performance, air jet machines are used
primarily for the economical production of standard fabrics, covering a wide range of styles.
Meanwhile, more and more niches and special fabric segments are covered; heavy cotton fabrics such
as denim, terry fabrics, glass fabrics, etc
5. .Fig: Air Jet Loom
The Air Jet weaving machines are the weaving machines with the highest weft insertion performance
and are considered as the most productive in the manufacturing of light to medium weight fabrics,
preferably made of cotton and certain man-made fibers. These machines are the ideal solution for
those who want to produce bulk quantities of customized fabric styles. The weaving widths range
generally from 190 to 400 cm.
The air jet weaving machines are the weaving machines with the highest weft insertion performance
and are considered as the most productive in the manufacturing of light to medium weight fabrics,
preferably made of cotton and certain man-made fibres (sheets, shirting fabrics, linings, taffetas and
satins in staple yarns of man-made fibres); it has any way to be pointed out that technically positive
results are obtained at present also with heavyweight fabrics (denim) and that some manufacturers
produce also machine models for terry production.
These machines are the ideal solution for those who want to produce bulk quantities of customized
fabric styles. The weaving widths range generally from 190 to 400 cm. As regards the multicolor weft
carrier, up to 8 different wefts can be fed.
It has, however, to be considered that the air jet weaving machines require a high energy consumption
to prepare the compressed air and that this consumption rises definitely with increasing loom width
and running speed. The reduction in the energy consumption is, in fact, one of the main concerns of
the manufacturers and builds for the user an important selection criterion.
Features Of Air Jet Loom:
• Weft yarn insertion us done by air force.
• Finer count of yarn is used as the weft thread to produce fancy type of fabric.
• Air jet loom is high speed loom having good quality.
• For instance on a weaving machine having a speed of 600rpm the weaving cycle is 100m/s.
• Weft yarn insertion us done by air force.
• Cam Control valves have the advantages of hugh speed precision of action whilst the
electricity controlled selonoid valves permit easy setting.
Advantages Of Air Jet Loom:
• Higher production capacity.
• High quality and complex design fabric can produce
• Automatic pick repairing
• Heavier yarns are suitable for air jet looms
6. Disadvantages Of Air Jet Loom:
• Loose pick.
• Need too high nozzle pressure.
• Power consumption dew to compressed air
• Lighter fabrics are very difficult to control through shed
• Too heavy yarns also can't be carried across the loom by air jet
3. Rapier Loom:
Rapier loom is a shuttleless weaving loom in which the filling yarn is carried through the shed of
warp yarns to the other side of the loom by finger like carriers called rapiers. As in the projectile
loom, a stationary package of yarn is used to supply the weft yarns in the rapier machine. One end of
a rapier, a rod or steel tape, carries the weft yarn. The other end of the rapier is connected to the
control system .The rapier moves across the width of the fabric, carrying the weft yarn across through
the shed to the opposite side. The rapier is then retracted, leaving the new filling in place.
Fig: Rapier Loom
In some versions of the machine, two rapiers are used, each half the width of the fabric in size. One
rapier carries the yarn to the center of the shed, where the opposing rapier picks up the yarn and
carries it the remainder of the way across the shed. A disadvantage of both these techniques is the
space required for the machine if a rigid rapier is used. The housing for the rapiers must take up as
much space as the width of the machine. To overcome this problem, looms with flexible rapiers have
been devised. The flexible rapier can be coiled as it is withdrawn and will therefore require less space.
However, if the rapier is too stiff, it will not coil; if it is too flexible, it will buckle.
The double rapier is used more frequently than the single rapier. Rigid and flexible rapier machines
operate at speeds of up to 1,300 meters of weft per minute. These rapier looms are efficient. They
operate at speeds ranging from about 200 to 260 ppm at about the noise level of projectile looms.
They can produce a wide variety of fabrics ranging from muslin to drapery and upholstery materials.
7. Fig: The operation principle of three rapier systems
Newer rapier machines are built with two distinct weaving areas for two separate fabrics. On such
machines, one rapier picks up the yarn from the center, between the two fabrics, and carries it across
one weaving area; as it finishes laying that pick, the opposite end of the rapier picks up another yarn
from the center, and the rapier moves in the other direction to lay a pick for the second weaving area,
on the other half of the machine. The above figure shows the action on a single width of fabric for a
single rigid rapier system, a double rigid rapier system, and a double flexible rapier system.
Rapier machines weave more rapidly than most shuttle machines but more slowly than most projectile
machines. An important advantage of rapier machines is their flexibility, which perm it’s the laying
of picks of different colors. They also weave yarns of any type of fiber and can weave fabrics up to
110 inches in width without modification.
Features Of Rapier Loom:
• Fancy fabric produced
• Production costly
• Power consumption moderate
• Simple mechanism
• Suitable for weft patterning
• Standard rapier width 190 cm.
• Production speed 200-260 ppm
Picking Mechanism of Rapier Loom:
The rapier head on creel side picks up yarn from designated cone and is carried towards centre
of warp shed by the rod.
Simultaneously the matching rapier head from opposite side moves in, as shown in the central
diagram.
The picking cycle is completed when both rapiers retreat to their original position.
8. Advantages Of Rapier Loom:
• The weft insertion rate in a rapier loom is very much influenced by the method of weft control.
• It can be occur double pick at a time by double picking insertion system. Here is no need to
cut the weft selvedge and no weft wastage.
• Weft insertion rate is very high rather than any conventional loom.
• Thee rapier loom doesn’t require dynamic forces or anything like the magnitude as those
involved in the conventional loom.
• Looms that use rigid rapiers eliminate entirely the need to assist the rapier head through the
warp shed, this is a undoubted advantages.
Disadvantages Of Rapier Loom:
• In case of rapier loom, noise level is higher than jet loom machine.
• Here, production speed is less than jet loom.
Scope Of Rapier Loom:
• Single rapier loom can insert weft only on alternate rapier traverse.
• Due to high rate of insertion the possiblility of yarn breakage rate may increase.
• In many case this is modified to achieve a higher rapier vrlocity in the early and late parts of
the movement and thus a over maximum velocity halfway through the movement.
4. Water Jet Loom:
Water Jet loom are extensively used in East Asia. They are characterized in particular by high
insertion performance and low energy consumption. These machines are produced only by few
companies and are used for the manufacture of light and medium weight fabrics with standard
characteristics and in water-repellent fiber materials, primarily multi-filament synthetic yarns. They
are characterized in particular by high insertion performance and low energy consumption.
These machines are produced only by few companies and are used for the manufacture of light and
medium weight fabrics with standard characteristics and in water-repellent fiber materials, primarily
multi-filament synthetic yarns.
Water jet machines are extensively used in East Asia, but have limited importance in other countries.
They are characterized in particular by high insertion performance and low energy consumption.
9. Structure of water jet loom
Operation Principle:
The figure shows how the machine operates. The weft yarn, which is fed from cone 7, is drawn-off
by a feeding and measuring device 2 and then passes through a tension regulator 3 and a weft clamp
4. When the insertion has to take place, the weft clamp loosens its hold and the thread inserted inside
a nozzle 1 is struck by a jet of pressurized water and launched through the shed at high speed.
After the insertion has taken place, while the weft is held flat by the threads which are moved by the
leno mechanisms 5, the thermal knives 14 enter into action on the launch side to cut the weft, and on
the opposite side to trim the fabric. A yarn clamping device 13 holds the weft waste which is cut off
by the right-handed thermal knife while rotating gears arrange for its removal (center selvedge).
Features Of Water Jet Loom:
• This type of loom is suitable for non absorbent fibre like synthetic fabric
• Less power consumption -
• Highest west insertion (600 ppm)
• Weft yarn package weight 3,6-4, 1 kg
• Treated water are used by pump nozzle
Advantages Of Water Jet Loom:
• Less power consumption
• Production rate is high
• Noise level is lower then missile and rapier loom
• This type of loom is suitable for non absorbent fibre like synthetic fibre
Disadvantages Of Water Jet Loom
• Not suitable for absorbent fibre like cotton
• By hard water may form rust on the yarn.
10. Multiphase Loom:
The phase number of a loom is defined as the average number of shuttles or weft carriers inserting
weft simultaneously. It is shown that existing multi-phase loom must have high phase numbers to
compensate for their low shuttle velocity.
Fig: Muliphase Loom
Features Of Multiphase Loom:
• Continuous weft insertion occurs in multiphase loom.
• Required an ever-changing warp shed, which is sometimes called waveshedding.
• There are usually four but occasionally six sets of sectional harness for each shuttle, and each
set requires a cam unit to drive the harness.
• In circular loom each cam unit is mounted on it’s own short shaft.
• Since each shaft must be connected to its adjacent shafts by bevel gears.
• Four sets of harness is required for 2/2 twill.
Advantages Of Multiphase Loom:
• An analysis of the factors determining the weft-insertion rate of weaving machines shows that
these factors are essentially the same on all looms.
• Its advantages include high efficiency, high speed and low weaving cost.
• The multiphase loom can form many different sheds at different places, thereby enabling
insertion of number of filling yarns, one behind The other .
Present Scenario of Modern Loom in Bangladesh:
There are various designs and structure oriented woven fabric are produced by this sector. Mainly
plain weave fabric is major production. This sector can produce only 40% of woven fabrics for woven
RMG. The situation of weaving sectors of Bangladesh are given below:
Weaving Mills:
• Looms -17,000 shuttle less and 13,000 shuttle
• Production capacity- 215 core meter
• Employment -80,000
11. Modern loom:
This sector is very popular sector of Bangladesh. Jamdani, and banarosi like luxurious share are
produced by this sector. The hand loom industry provides employment for a large segment of the
rural population of Bangladesh. It also helps in self employment of rural women.
Liton, M., Islam, T., and Saha, S. (2016) the study found that in Bangladesh there are about 183512
modernlooms weaving units with about 505556 looms. The total operational looms are 311851, which
are 61.7 percent of total looms, and the rest 193705 looms are non-operational.
• No. of units – 1,83,512
• Production capacity – 837 core mtr.
• No. of hand looms – 5.05 lakh
• Employment – 10.2 lakh (50% female)
• The industry also supplies a large portion of the fabric required by the local market.
• Bangladesh hand loom board looks after the sector.
Power Loom:
Mainly synthetic and specialized products are produced. Share, lungi, and gamcha also produced at
this sector. Local primary textile industry meets 90% of domestic fabric demand.
• No. of units – 1065
• Production capacity – 40 core meter
• Employment -43,000
Conclusion:
Nowadays in Bangladesh, uses of modern loom is increasing day by day. We know that the number
of weaving factories are increasing. And in those factories, they are using modern weaving machine
to get extra feature and advantage more than handloom or manual loom.
Modern loom is playing a vital role in our economical market. Modern loom increases production,
efficiency of production is increased because of using of modern loom. In our country modern loom
is like an evolution.
---The End—
Submitted by,
Md Rakibul Hassan
Id: 183014057
Reference-
1.https://www.slideshare.net/IbrahimIbrahim61/modern-
loom#:~:text=Its%20advantages%20include%20high%20efficiency,yarns%2C%20o
ne%20behind%20The%20other%20.
2.https://textilelearner.blogspot.com/2013/07/different-types-of-loom-
conventional.html
3. https://textilelearner.blogspot.com/2012/05/rapier-weaving-machine-rapier-
loom.html