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.
Mazadul Hasan prepared this document about marker making in the textile industry. A marker contains pattern pieces for different sizes of garments and provides instructions for cutting. Factors that affect marker efficiency include the marker planner's skills, pattern engineering, size variety, marker length, fabric characteristics, and the marker making method. Higher marker efficiency reduces fabric wastage and increases profits. The document concludes with information about Mazadul's visit to a garments factory in Gazipur, Bangladesh.
1. The document discusses different types of knitted fabrics and their properties. It describes the processes of weaving, knitting, and fully fashioning.
2. Key knitted structures discussed include plain/single jersey, rib, and double jersey. Their properties like appearance, edge curling, dimensional stability, and end uses are compared.
3. The full production process of fully fashioned knitwear from yarn receipt to final packaging is outlined. Common yarns, stitches, and designs used in knitwear are also listed.
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.
This presentation discusses different types of seams, including 8 seam classes. It begins by defining a seam as the line where fabric layers are joined, which can be done through sewing or other methods. Key points include:
- Seam classes include superimposed, lapped, bound, flat, decorative, edge finishing, applied, and other seams.
- Different seam types are used for functional or aesthetic purposes and are defined by factors like strength, elasticity, durability, and comfort levels.
- Seam quality is measured by parameters such as size, slippage strength, and strength to break the seam or materials.
- Examples are given of common seam types like superimposed and lapped
The document discusses cutting in the garments industry. It covers the cutting process, requirements for accurate cutting, different cutting methods including manual and computerized, and various cutting machines used such as straight knife cutters, round knife cutters, and band knife cutters. It also discusses quality control processes for the cutting section to ensure accurate cutting of garment pieces.
This document discusses the development of looms from primitive hand looms to modern automated looms. It outlines the key stages of development including the fly shuttle loom, power looms, semi-automatic looms, and modern shuttle-less looms. The basic mechanisms and motions of weaving are described, including primary, secondary, and tertiary motions. Different parts of a loom and their functions are also summarized.
This document provides information about knitting and common knitting defects. It begins by defining knitting as a technique that uses intermeshed loops of yarn to form fabric. It then compares characteristics of woven and knitted fabrics. The document classifies types of knitted fabrics and defines important knitting terms. Finally, it describes and provides causes and remedies for several common knitting defects such as drop stitches, barriness, imperfections, and contamination.
The document discusses various methods of fabric cutting used in the garment industry. It describes the key steps in the fabric cutting process and requirements for accurate cutting. Several cutting methods are outlined, including manual cutting with scissors or power knives, as well as computerized cutting using knives, lasers, water jets, or plasma torches. The advantages and disadvantages of each method are provided.
Mazadul Hasan prepared this document about marker making in the textile industry. A marker contains pattern pieces for different sizes of garments and provides instructions for cutting. Factors that affect marker efficiency include the marker planner's skills, pattern engineering, size variety, marker length, fabric characteristics, and the marker making method. Higher marker efficiency reduces fabric wastage and increases profits. The document concludes with information about Mazadul's visit to a garments factory in Gazipur, Bangladesh.
1. The document discusses different types of knitted fabrics and their properties. It describes the processes of weaving, knitting, and fully fashioning.
2. Key knitted structures discussed include plain/single jersey, rib, and double jersey. Their properties like appearance, edge curling, dimensional stability, and end uses are compared.
3. The full production process of fully fashioned knitwear from yarn receipt to final packaging is outlined. Common yarns, stitches, and designs used in knitwear are also listed.
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.
This presentation discusses different types of seams, including 8 seam classes. It begins by defining a seam as the line where fabric layers are joined, which can be done through sewing or other methods. Key points include:
- Seam classes include superimposed, lapped, bound, flat, decorative, edge finishing, applied, and other seams.
- Different seam types are used for functional or aesthetic purposes and are defined by factors like strength, elasticity, durability, and comfort levels.
- Seam quality is measured by parameters such as size, slippage strength, and strength to break the seam or materials.
- Examples are given of common seam types like superimposed and lapped
The document discusses cutting in the garments industry. It covers the cutting process, requirements for accurate cutting, different cutting methods including manual and computerized, and various cutting machines used such as straight knife cutters, round knife cutters, and band knife cutters. It also discusses quality control processes for the cutting section to ensure accurate cutting of garment pieces.
This document discusses the development of looms from primitive hand looms to modern automated looms. It outlines the key stages of development including the fly shuttle loom, power looms, semi-automatic looms, and modern shuttle-less looms. The basic mechanisms and motions of weaving are described, including primary, secondary, and tertiary motions. Different parts of a loom and their functions are also summarized.
This document provides information about knitting and common knitting defects. It begins by defining knitting as a technique that uses intermeshed loops of yarn to form fabric. It then compares characteristics of woven and knitted fabrics. The document classifies types of knitted fabrics and defines important knitting terms. Finally, it describes and provides causes and remedies for several common knitting defects such as drop stitches, barriness, imperfections, and contamination.
The document discusses various methods of fabric cutting used in the garment industry. It describes the key steps in the fabric cutting process and requirements for accurate cutting. Several cutting methods are outlined, including manual cutting with scissors or power knives, as well as computerized cutting using knives, lasers, water jets, or plasma torches. The advantages and disadvantages of each method are provided.
This document discusses different types of weft knitting techniques. It describes the basic process of weft knitting where loops are formed across the width of fabric using a single thread. The main types discussed are plain/single jersey, purl, rib, and interlock fabrics. For each type, it provides details on how they are knitted, their properties and characteristics.
1) Plain single jersey is a basic weft knitted fabric where the front side has face loops forming a "V" shape and the back side has back loops forming semi-circles.
2) It is produced using a plain circular latch needle machine with one set of needles knitting at each feed to form a single loop per course.
3) Single jersey fabric is lightweight, comfortable, and inexpensive to produce, making it widely used for apparel and other applications. Variations can be made by modifying the knitting order.
Knitted fabrics are made from interlocking loops of yarn. There are two main types of knitting: weft knits and warp knits. In weft knitting, loops are linked across the width, while in warp knitting loops are linked vertically. Weft knits can be made by hand or machine and have stretch and retain heat, but can lose shape. Warp knits are made quickly by machine, are elastic but hold their shape, and lie flat when cut.
Knitting is a method of fabric formation that involves interlocking loops of yarn. There are two main types of knitting - weft and warp. Weft knitting forms loops across the width of the fabric using a single yarn, while warp knitting forms loops along the length using multiple yarns. Common weft knits include plain, purl, rib, and interlock stitches which are used to make various garments and textiles. Warp knits like tricot and raschel are produced more quickly on specialized machines and can incorporate diverse yarn types and complex structures. Knitted fabrics have different properties depending on factors like stitch type, yarn used, and intended application.
The presentation discusses various basic weaves including plain weave, warp rib weave, weft rib weave, and basket weave. Plain weave is the simplest weave with warp and weft yarns alternating over and under in a repeating pattern. Warp rib and weft rib weaves extend the plain weave structure in the warp or weft direction respectively to create ribbing effects. Basket weave is a variation of plain weave where adjacent yarns are grouped and woven as a single unit, creating a checkerboard pattern. Each weave type has unique characteristics that determine its properties and end uses.
Fabric defects in woven and knitted fabric - hitesh choudharyHitesh Choudhary
This document provides information about various types of fabric defects, their causes, and methods for inspection and grading. It begins with definitions of a fabric defect and examples of common defects seen in woven, knitted, terry, and velvet fabrics. Specific defects are then described in more detail such as knots, holes, missing threads, oil stains, and more. Grading systems for inspecting and assigning penalty points to defects are also outlined, including the 4-point and 10-point systems. The document aims to help identify, mend, and minimize fabric defects.
1) The document discusses different basic weaves including plain weave, twill weave, and satin weave. It explains how each weave is constructed and provides examples of fabrics made with each weave type.
2) Graph paper is used to represent weaves, with squares indicating where warp and weft threads interlace. Different graph paper sizes are used depending on the thread count of the fabric.
3) Derivatives and variations of the basic weaves are also covered, such as basket weave, rib weave, herringbone twill, and diamond and diaper twill designs. The uses of twill weave for different fabric types is mentioned.
Sewing threads are engineered yarns designed to pass through sewing machines without breaking. They are produced from fibers like cotton, polyester, nylon, silk, and linen. Thread construction involves twisting fibers or filaments together, with the amount of twist and direction of twist affecting the thread's strength and performance. Different thread types are suitable for various fabrics and purposes, such as cotton for breathability and polyester for durability. Thread finishes further enhance qualities like strength and abrasion resistance. Good sewing threads sew easily, make durable seams, and in the case of decorative threads, are aesthetically pleasing.
This document discusses various types of fabric structures and weaves. It begins with an introduction to the main methods of fabric production - weaving, knitting, and non-woven. It then focuses on woven fabrics and provides details on the classification, representation, and basic elements of woven designs. The key woven structures discussed include plain weave, twill weave, and satin/sateen weave. For each weave type, the document explains the weave repeat, shift, characteristics, and examples. It also covers various types of draft plans and their uses for different woven structures.
The document provides information about discharge printing, which is a textile printing process where a bleaching agent is printed onto previously dyed fabrics to remove some or all of the original color. It discusses how discharge printing works, the required fabrics, discharge agents used, importance of discharge styles, discharge screen printing process, positives and negatives of discharge screen printing, and how cotton and polyester fabrics give different results. The document contains detailed technical explanations and considerations for discharge printing.
Different parts of knitting machine and parameterAzmir Latif Beg
Knitting machines are mainly two types; they are circular knitting machine and flat bed knitting machine. This two types are hugely use in knitting machine. A knitting machine is composed of lots of parts. Every parts of a machine are important for run the machine smoothly. Every part has a specific function during operation.
This document discusses the relationship between gram per square meter (GSM), yarn count, stitch length, and fabric construction. It provides data on the GSM, yarn count, and stitch length of various knit fabrics including single jersey, interlock, rib fabrics, pique, fleece, and more. The conclusion emphasizes that GSM can vary according to yarn count for the same fabric type. Finished GSM, yarn count, and stitch length are interrelated and important specifications for knit fabric production.
This document discusses textile testing instruments and their importance. It lists 33 different instruments used for testing various textile properties such as tensile strength, abrasion, color, moisture content, and others. Textile testing is crucial for the textile industry to ensure quality, monitor production, develop new products, and investigate faults. Without testing, quality cannot be guaranteed and profits will be reduced. A variety of instruments are needed to test the diverse range of textile material properties.
This document analyzes the stitches and seams used in a men's t-shirt. It identifies the garment parts and provides details on the brand, size, fabric, and needle used. For each garment part, including the collar, placket, label, sleeves, hem, and side seams, it lists the stitch type and sewing machine used, as well as an alternative option. In total, it examines the construction of the t-shirt and the specific stitches for attaching each component.
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
This document discusses different types of selvedges used in weaving to prevent fraying of fabric edges. There are three main types: conventional selvedges produced on shuttle looms, which require strength; tuck selvedges where extra yarn is pulled into the shed; and fringe selvedges where alternating weft tails point up and down to hide the fringe. Special selvedges are needed when the weft yarn is cut, and leno structures that twist or lock outside ends with thread are also used to create strong, uniform selvedges.
Warp knitting is a method of knitting where loops are formed vertically along the length of fabric from warp yarns. There are several types of warp knitting including tricot, raschel, and milanese knits. Tricot knits use compound needles and are used for fabrics like lingerie, loungewear, and uniforms. Raschel knits use latch needles and heavier yarns, producing more textured fabrics for applications like carpets, home textiles, and outerwear. Milanese knits form diagonal patterns and are often made from filament yarns into lightweight fabrics.
This presentation was made to have an elaborate sense of fabric spreading. Different types of fabric spreading and the pros and cons of different fabric spreading is illustrated into the presentation.
The document discusses different types of twill weave structures and designs, including:
(1) Continuous twills that form diagonal lines across the fabric with variations in warp/weft float ratios.
(2) Zig zag and wavy twills that create non-straight diagonal patterns through periodic reversals of the twill direction.
(3) Broken and rearranged twills like herringbone that break up the twill lines through offsets, cuts, or changes in the float sequence.
(4) Combination twills that combine elements of different base twill structures to form complex patterns and designs.
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.
Present Condition/Scenario of Modern Loom in BangladeshMd Rakibul Hassan
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.
This document discusses different types of weft knitting techniques. It describes the basic process of weft knitting where loops are formed across the width of fabric using a single thread. The main types discussed are plain/single jersey, purl, rib, and interlock fabrics. For each type, it provides details on how they are knitted, their properties and characteristics.
1) Plain single jersey is a basic weft knitted fabric where the front side has face loops forming a "V" shape and the back side has back loops forming semi-circles.
2) It is produced using a plain circular latch needle machine with one set of needles knitting at each feed to form a single loop per course.
3) Single jersey fabric is lightweight, comfortable, and inexpensive to produce, making it widely used for apparel and other applications. Variations can be made by modifying the knitting order.
Knitted fabrics are made from interlocking loops of yarn. There are two main types of knitting: weft knits and warp knits. In weft knitting, loops are linked across the width, while in warp knitting loops are linked vertically. Weft knits can be made by hand or machine and have stretch and retain heat, but can lose shape. Warp knits are made quickly by machine, are elastic but hold their shape, and lie flat when cut.
Knitting is a method of fabric formation that involves interlocking loops of yarn. There are two main types of knitting - weft and warp. Weft knitting forms loops across the width of the fabric using a single yarn, while warp knitting forms loops along the length using multiple yarns. Common weft knits include plain, purl, rib, and interlock stitches which are used to make various garments and textiles. Warp knits like tricot and raschel are produced more quickly on specialized machines and can incorporate diverse yarn types and complex structures. Knitted fabrics have different properties depending on factors like stitch type, yarn used, and intended application.
The presentation discusses various basic weaves including plain weave, warp rib weave, weft rib weave, and basket weave. Plain weave is the simplest weave with warp and weft yarns alternating over and under in a repeating pattern. Warp rib and weft rib weaves extend the plain weave structure in the warp or weft direction respectively to create ribbing effects. Basket weave is a variation of plain weave where adjacent yarns are grouped and woven as a single unit, creating a checkerboard pattern. Each weave type has unique characteristics that determine its properties and end uses.
Fabric defects in woven and knitted fabric - hitesh choudharyHitesh Choudhary
This document provides information about various types of fabric defects, their causes, and methods for inspection and grading. It begins with definitions of a fabric defect and examples of common defects seen in woven, knitted, terry, and velvet fabrics. Specific defects are then described in more detail such as knots, holes, missing threads, oil stains, and more. Grading systems for inspecting and assigning penalty points to defects are also outlined, including the 4-point and 10-point systems. The document aims to help identify, mend, and minimize fabric defects.
1) The document discusses different basic weaves including plain weave, twill weave, and satin weave. It explains how each weave is constructed and provides examples of fabrics made with each weave type.
2) Graph paper is used to represent weaves, with squares indicating where warp and weft threads interlace. Different graph paper sizes are used depending on the thread count of the fabric.
3) Derivatives and variations of the basic weaves are also covered, such as basket weave, rib weave, herringbone twill, and diamond and diaper twill designs. The uses of twill weave for different fabric types is mentioned.
Sewing threads are engineered yarns designed to pass through sewing machines without breaking. They are produced from fibers like cotton, polyester, nylon, silk, and linen. Thread construction involves twisting fibers or filaments together, with the amount of twist and direction of twist affecting the thread's strength and performance. Different thread types are suitable for various fabrics and purposes, such as cotton for breathability and polyester for durability. Thread finishes further enhance qualities like strength and abrasion resistance. Good sewing threads sew easily, make durable seams, and in the case of decorative threads, are aesthetically pleasing.
This document discusses various types of fabric structures and weaves. It begins with an introduction to the main methods of fabric production - weaving, knitting, and non-woven. It then focuses on woven fabrics and provides details on the classification, representation, and basic elements of woven designs. The key woven structures discussed include plain weave, twill weave, and satin/sateen weave. For each weave type, the document explains the weave repeat, shift, characteristics, and examples. It also covers various types of draft plans and their uses for different woven structures.
The document provides information about discharge printing, which is a textile printing process where a bleaching agent is printed onto previously dyed fabrics to remove some or all of the original color. It discusses how discharge printing works, the required fabrics, discharge agents used, importance of discharge styles, discharge screen printing process, positives and negatives of discharge screen printing, and how cotton and polyester fabrics give different results. The document contains detailed technical explanations and considerations for discharge printing.
Different parts of knitting machine and parameterAzmir Latif Beg
Knitting machines are mainly two types; they are circular knitting machine and flat bed knitting machine. This two types are hugely use in knitting machine. A knitting machine is composed of lots of parts. Every parts of a machine are important for run the machine smoothly. Every part has a specific function during operation.
This document discusses the relationship between gram per square meter (GSM), yarn count, stitch length, and fabric construction. It provides data on the GSM, yarn count, and stitch length of various knit fabrics including single jersey, interlock, rib fabrics, pique, fleece, and more. The conclusion emphasizes that GSM can vary according to yarn count for the same fabric type. Finished GSM, yarn count, and stitch length are interrelated and important specifications for knit fabric production.
This document discusses textile testing instruments and their importance. It lists 33 different instruments used for testing various textile properties such as tensile strength, abrasion, color, moisture content, and others. Textile testing is crucial for the textile industry to ensure quality, monitor production, develop new products, and investigate faults. Without testing, quality cannot be guaranteed and profits will be reduced. A variety of instruments are needed to test the diverse range of textile material properties.
This document analyzes the stitches and seams used in a men's t-shirt. It identifies the garment parts and provides details on the brand, size, fabric, and needle used. For each garment part, including the collar, placket, label, sleeves, hem, and side seams, it lists the stitch type and sewing machine used, as well as an alternative option. In total, it examines the construction of the t-shirt and the specific stitches for attaching each component.
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
This document discusses different types of selvedges used in weaving to prevent fraying of fabric edges. There are three main types: conventional selvedges produced on shuttle looms, which require strength; tuck selvedges where extra yarn is pulled into the shed; and fringe selvedges where alternating weft tails point up and down to hide the fringe. Special selvedges are needed when the weft yarn is cut, and leno structures that twist or lock outside ends with thread are also used to create strong, uniform selvedges.
Warp knitting is a method of knitting where loops are formed vertically along the length of fabric from warp yarns. There are several types of warp knitting including tricot, raschel, and milanese knits. Tricot knits use compound needles and are used for fabrics like lingerie, loungewear, and uniforms. Raschel knits use latch needles and heavier yarns, producing more textured fabrics for applications like carpets, home textiles, and outerwear. Milanese knits form diagonal patterns and are often made from filament yarns into lightweight fabrics.
This presentation was made to have an elaborate sense of fabric spreading. Different types of fabric spreading and the pros and cons of different fabric spreading is illustrated into the presentation.
The document discusses different types of twill weave structures and designs, including:
(1) Continuous twills that form diagonal lines across the fabric with variations in warp/weft float ratios.
(2) Zig zag and wavy twills that create non-straight diagonal patterns through periodic reversals of the twill direction.
(3) Broken and rearranged twills like herringbone that break up the twill lines through offsets, cuts, or changes in the float sequence.
(4) Combination twills that combine elements of different base twill structures to form complex patterns and designs.
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.
Present Condition/Scenario of Modern Loom in BangladeshMd Rakibul Hassan
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.
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 presentation provides an overview of the chronological developments of looms. It begins with discussing the early history of textile industries in Egypt and China thousands of years ago. It then covers the evolution of different types of manual looms such as handlooms. The presentation moves on to explain the development of power looms in the late 18th century, which mechanized the weaving process. It also discusses improvements to power looms over time, including the use of steam and electric power. The presentation delves into developments in key loom components like shedding mechanisms, weft insertion systems, and weft stop motions. It covers innovations like dobby, jacquard, rapier, projectile, air jet and water
This presentation is about: Evolution of weaving, Developments in power loom, Developments in weft stop motion, Developments in Shedding Mechanism, Developments in Weft insertion System.
Introduction of knitting, prepared by students of Daffodil International Univ...Matiur Rahman khan Babu
This slide is for the student of Textile Engineering of initial stage of knitting of fabric formation. prepared by Matiur,Mesbah, Amzad, Shakil, Rifat & tuhin
This document summarizes the yarn manufacturing process and common defects that can occur. It discusses the 7 main departments in yarn manufacturing: (1) blow room, (2) carding, (3) drawing, (4) roving, (5) spinning, (6) winding, and (7) inspection and packaging. The blow room is the initial stage where cotton bales are opened and cleaned. Yarn defects most often occur during winding, the final stage where packages of yarn are created for customers. Managing defects is important for companies to improve quality and profits.
Fabric Manufacturing Engineering, All Experiment Submission.pdfT. M. Ashikur Rahman
The tappet shedding mechanism uses tappets attached to a bottom shaft to raise and lower heald shafts, forming a shed for the shuttle to pass through. There are two main types - negative tappet shedding, where the tappet controls only one movement of the heald shaft and an external device returns it, and positive tappet shedding where the tappet controls both upward and downward movement. The tappet rotates and strikes a bowl connected to a treadle lever, moving the heald shaft up or down depending on the type of tappet shedding. Tappet shedding can produce basic weaves but is limited in complexity compared to other shedding mechanisms.
The document provides a history and overview of looms from ancient to modern times. It discusses how weaving was introduced in human societies and major textile developments occurred in England. It then chronologically outlines the development of looms from vertical and pit looms used as early as 5000-6000 BC, to frame looms, power looms driven first by water wheels then steam and diesel engines in the 18th-19th centuries, and modern looms using various technologies like projectiles, rapiers and jets of air or water to operate. It also describes different types of traditional and modern looms as well as primary, secondary and tertiary loom motions.
The document provides information about circular knitting machines. It defines knitting as transforming yarn into interlocking loops. Circular knitting creates seamless tubes using circular needles or machines. Machine parts include the frame, power supply, yarn feeding system, and quality control components. Circular knitting machines are used to produce fabrics for various garments and other materials. Modern machines feature computer controls to monitor functions like speed and stops.
The document provides information on the history and processes involved in textile manufacturing. It discusses that textiles originated from weaving fabrics and now refers to fibers, yarns and fabrics. It then summarizes that linen was discovered in Egypt 5000 BC, wool fabrics in Scandinavia and Switzerland centuries ago, cotton in India since 3000 BC and silk in China since 1000 BC. The document proceeds to describe the various steps involved in processing different natural fibers like cotton, wool, flax and jute into yarns and fabrics. This includes cultivation, preparatory processes, spinning, weaving, knitting, finishing and dyeing. It highlights that cotton remains the most widely used natural fiber.
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.
The document discusses different types of looms, focusing on the pit loom. It describes the pit loom as being invented in 1766 BC in Egypt, where the weaver would sit in a pit with their legs and use foot pedals to open the warp threads for the shuttle. The pit loom leaves the weaver's hands free to pass the shuttle across. It provides pictures and describes the basic structure of a pit loom, including components like the shuttle, shuttle box, warp beam, cloth roller, heddles, reed, and differences between throw shuttle and fly shuttle pit looms. Advantages are noted as producing texture and higher production than other early looms, while disadvantages include difficulty controlling many heddles and setting
The document provides a presentation on the chronological developments of the loom. It discusses the history of textile industries in Egypt and China dating back thousands of years. It then covers the evolution of different types of looms including handlooms, power looms, dobby looms, and jacquard looms. The presentation also examines developments in shedding mechanisms, weft insertion systems, stop motions, and new technologies that have increased automation and production rates of modern looms.
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.
Warp knitting is a family of knitting methods in which the yarn zigzags along the length of the fabric, i.e., following adjacent columns ("wales") of knitting, rather than a single row ("course"). For comparison, knitting across the width of the fabric is called weft knitting
This document describes an experiment conducted on a Tricot warp knitting machine. It includes:
1) An overview of the machine, its parts, and yarn path diagram. The main parts described are the compound needle, pattern chain, needle bar, and more.
2) Details of the specific machine used, including its brand, origin, specifications.
3) Explanations of how each part functions and their roles in the knitting process.
4) A conclusion that the experiment provided an introductory understanding of tricot knitting machines to help with future industrial applications.
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 provides information about AKM Sahedujjaman, a student of textile engineering at City University in Dhaka, Bangladesh. It then discusses various textile processes like combing, lap formation, simplex/roving frame, ring frame. Key details covered include objectives, functions, calculations and common issues for each process. Recent developments in simplex machines and factors considered for traveller selection in ring frames are also summarized.
The document summarizes key aspects of textile engineering related to weaving. It discusses the three main types of fabrics - woven, knitted, and nonwoven - and describes the weaving process steps from winding the yarn to sizing and weaving. It also compares woven and knitted fabrics, explains why yarn preparation is necessary before weaving, outlines different types of looms including hand, power, automatic and shuttle-less looms, and describes the weaving processes of shedding, picking, and beat-up. The document was presented by Mazharul Islam from the Department of Wet Process Engineering at PTEC.
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Hand loom
1. Loom:
Loom is a very necessary part for weaving. Loom is a machine or device which is used for
producing woven fabric. Loom is driven by two ways. These are manual system and automatic
system.
Evolution of Weaving
1. Egyptians made woven fabrics some 6000years ago.
2. Chinese made fine fabrics from silk over 4000 years ago.
3. A shedding mechanism was originally invented in China in the 3rd century and
introduced in Europe.
4. In 12th century, completely wooden hand looms were used as standard designs in
England.
5. The developments in the design and performance of looms have taken place during the
past 850 years.
6. The fly shuttle, invented in 1733 by John Kay, was hand operated.
7. It was an important cornerstone to improve the productivity.
8. This shuttle, running on four wheels, was moving over the lower side of the warp sheet.
9. Two wooden tenders connected to a small cord commanded by the hand were used to
propel the shuttle. The weaver sitting in the middle of the loom threw the shuttle by
pulling the cord very easily.
Hand loom
2. Power Looms
1. E.Cartwright invented the power loom in 1785
2. In the early 1800s, looms made of cast iron were operated by power .
3. In the 1830s, there were some 100,000 shuttle looms operating in England.
4. In 1895, many looms, all driven by an electric engine were invented and then became
spread.
5. At the beginning of 1930's, eventually, each weaving machine driven individually by an
electric motor was developed; this loom drive concept has remained in use until the
present.
Automation
1. The automatic loom stopping system was invented by R.Miller in England in 1796. The
loom was automatically stopped when a short pick occurred.
2. In 1894 Northrop devised a means for automatic weft replenishment without stopping
the loom which was called automatic loom.
Shedding Mechanisms
1. The first dobby operated by a punched card was invented by B. Bouchone in 1725.
2. A machine controlling bundles of harness cords with healds was constructed by J.M.
Jacquard in 1801.
3. The first shuttle change motion enabling weft threads of different colors to be inserted
was constructed by J.P. Reid and T. Johnson in 1835.
4. One significant invention in the field of design was that of Keighley dobby by Hattersley
and Smith in 1867 .
5. Rotary dobbies are manufactured in 1990s.
Weft Insertion Systems
1. Projectile w.m. was invented in 1924by an engineer named Rossmann became
commercial in 1953.
2. The first patent for the rapier w.m.was granted in 1898, then followed the Gabler
system in 1925 and the Dewas system in 1930. Production of rapier w. m. started in
1972.
3. The first air-jet system was invented in 1914 but it became important commercially
after 1980’s.
4. Continuous weft insertion on a circular w.m. was proposed before the end of the 19th
century.
5. After mid 90s, multi phase w.m. has showed new developments.
3. Types of Loom Motion:
Different Motion of the Loom
Loom has three types of motion:
1. Primary motion
2. Secondary motion
3. Tertiary motion
Primary motion
Primary motion has three types. They are:
A. Shedding:- The process of making shed is called shedding. it is the process of separating
the warp yarn into two layers to form a tunnel which is called shed, is known as shedding.
B. Picking: - The method of passing the weft threads traversely through warp yarn is called
picking.
C. Beat up: - The process in which yarns are sent to the fell of the cloth is called beat up.
Secondary motion
Secondary motion is in two types:
1. Take up motion
2. Let off motion
4. Tertiary motion
Tertiary motion is not necessary for fabric production. The tertiary motions are:
1. Warp stop motion.
2. Weft stop motion.
3. Reed stop motion.
Loom motion controls the fabric production. by using these motion weavers can produce
different types of fabrics.
List of Different kind of Hand Loom:
1. Primitive loom
2. Pit loom
3. Frame loom
4. Chittaranjan loom
5. Hatersley loom
In the textile sector present time is the time of modern & new era. Man has invented a lot of
modern loom using with modern weft insertion system. So the comparison of conventional
loom & modern loom indicates how much the conventional loom is modified within the passing
of time.
Hand Loom:
It is still not certain when the weaving process was introduced to human society. It is clear
from many historical records that weaving originated long before the time of Jesus Christ. In
England the major shift from agriculture to woolen industry came in the 14th century.
Earlier version of power loom was run by two men. After the steam engine and cast iron in
early 1800, great attention was paid to increasing productivity of the machine. To help achieve
the increase in productivity, William Radeliffe patented a dressing frame in 1803 for sizing and
drying the warp threads prior to winding on to a weavers beam.
Figure: Conventional loom
5. Shuttle Loom with Features:
The shuttle loom is the oldest type of weaving loom which uses a shuttle which contains a
bobbin of filling yarn that appears through a hole situated in the side. The shuttle is batted
across the loom and during this process; it leaves a trail of the filling at the rate of about 110 to
225 picks per minute (ppm). Although very effective and versatile, the shuttle looms are slow
and noisy. Also the shuttle sometimes leads to abrasion on the warp yarns and at other times
causes thread breaks. As a result the machine has to be stopped for tying the broken yarns.
Salient Feature of Shuttle Less Looms:
1. Shuttleless weave 2 to 4 times as much as conventional looms per unit time.
2. The cost of pirn winding is eliminated
3. Strain upon the warp threads is reduced due to smaller depth of shed
4. Heavy cost of repairs and replenishment of worn out parts is reduced They can
produce simpler tubes of fabrics on a large scale and provide opportunities for
profitable exploitation in the long run.
5. The physical and mental strain upon the weaver is reduced
6. There is no risk of shuttle fly out owing to the absence of conventional shuttle
and packing being positive
7. Quality of the fabric gets enhanced because of a positive control over the
weaving process
8. The looms are easier to work and manipulate
9. Efficiency of the shuttle weaving shed is comparatively higher
10. 5% reduction in value loss for a Rs. 60/- Metre fabric would ensure an additional profit
of Rs. 3/- meter
11. Higher production per loom
12. Speed is not the only criterion for the selection of shuttleless looms. Efficiency is also an
important criterion. Efficiency advantage of 10-15% due to shuttle changes, Un weaving
of damages, reduced time for warp changes canbe obtained from shuttleless looms. 5%
higher efficiency would provide an additional profit of Rs. 1/- per metre.
13. 14 minutes stoppage per 24 hours.
14. Ex works cost is less due to less mending and inspection charges and no pirn
winding charges.
15. Projectile and Air-jet looms suitable for Mass fabrics Rapier for fashion fabrics
Loom Timing
Loom timing is defined as relative chronological sequences of various primary and
secondary motions are expressed in terms of degree of crank shaft rotation. The loom
timing is presented by a diagram termed as “Loom Timing Diagram”. The diagram
depicts the start and end of each primary event of different weaving motions. The start
and end of events are influenced by loom type, fabric width and fabric type. The loom
timing is shown in the Figure.
6. Loom Timing Diagram
16. The timings of most of the events in the loom cycle are governed by the position of the
reed and thus the sley. For example, the reed must be on its way towards the back of the
loom before the shed is large enough to admit the shuttle. This determines the timing of
the picking mechanism which is directly related to the position of the reed and sley.
Some others are related to it indirectly. For example. the timing of the weft break stop
motion is related to the flight of the weft carrier, which is governed by the position of
the reed. The timings on the weaving machine are stated in relation to the angular
position of the crankshaft (main shaft) which operates the sley.
7. 17. The path traced out by the axis of the crank pin is called the ‘crank circle’. The arrow on
the crank circle shows the usual direction of rotation of the crankshaft. When the crank
and crank arm are in line and the sley is in its most forward position.
The crank circle is graduated in degrees from this point in the direction of rotation of
the crankshaft. Any timing can be stated in degrees, as, for example, ‘healds level at
3000’
Looms are provided with a graduated disc on the crankshaft and a fixed pointer to make
settings in relation to the angular position of the crankshaft. With the reed in its most
forward position, the disc is adjusted so that the pointer is opposite to 00 on the
graduated scale. The loom may then be turned to any desired position manually, the
disc turning with it and the pointer remaining vertical and indicating the angular
position of the crank shaft. In modern looms with microprocessors, the main
shaft position is displayed on a screen, but the setting principle remains same.
The Complete Process From Thread to Cloth
The first step in any weaving project is to decide what the cloth’s purpose in life will be.
The intended function of the cloth guides the weaver in choosing the appropriate thread
or yarn. For example, the yarn use to weave a rug needs to be thick and hard-wearing,
and the cloth must be stiff and flat. It must not roll up at the edges and trip everyone
who walks on it, or if it is to be hung as decorative art, it must lie flat against the wall. A
scarf, on the other hand, or any cloth worn next to the skin, should be smooth, soft, and
very drapey so it conforms to the body.
Because weave primarily scarves and shawls, and personal preference is for fine rather
than bulky cloth, choose very thin thread in natural fibers that are comfortable to wear
next to the skin. Silk, lyocell, rayon, cotton, and fine soft wool such as Merino are good
choices.
There is no set standard for the size of a scarf - some people prefer long and narrow,
others prefer a shorter, wider shape. The size of the wearer makes a difference, too. At
six feet tall, likely to wear a longer, wider shawl than a woman five feet tall. Some
women like to do the Isadora Duncan fling, with a dramatically long scarf wrapped
around the neck once or twice. Some scarves look best simply draped over the
shoulders. Some scarves have long, twisted fringe, others have short, straight fringe or
just a simple hem.
In any case, must make decisions about length and width and end treatment before
starting to weave, because these factors determine the amount of thread I’ll need. The
design, or pattern, of the cloth also has an impact. What’s the scale of the pattern? Do It
choose a nonrepeating pattern? Two repeats? Ten repeats? Fifty repeats?
Once we’ve decided what thread to use, I use two kinds of software to help in the
planning and design phase: • A spreadsheet helps me calculate the amount of yarn we’ll
need. You’ll see an example in Figure1 on the facing page. • Weaving software lets me
8. program the design of the cloth into the computer. Later, this same software will send
the finished design to another computer attached to the loom. This means we don’t have
to remember each step of the design - which can be more than 2,000 threads long - the
computer remembers it for me. Hey, this is why God made computers! Figure2 shows an
example of a design that you will see throughout this document in various stages.
Dyeing the Thread
I usually buy undyed thread that is wound onto large cardboard cones. I must measure
off the number of yards I’ll need, based on the spreadsheet (with a bit extra just in case)
and make skeins for dyeing.
9. Then we get to play in the dye-pot! The pictures on the next page show the dye process
at various stages. For the project we are planning, there will be two colors of warp
threads, alternating thread by thread, so we’ll dye half the warp yardage on one color,
and half in the other. In this case, the colors are medium blue and deep blue-green
10. Winding the Warp Threads
The warp, that is, the lengthwise threads in the cloth, must be measured out to the
correct length for my project, and the threads must be kept in order so that they can be
wound onto the loom properly. Since it’s awkward to wind a warp with fine threads
directly from a skein, we must first wind the thread back onto a cardboard cone. Then
we begin winding the warp using a warping mill. Each thread follows the same path
(based on a guide thread that is the same length as the warp will be) and is kept in order
through the whole process.
Once all the threads are measured out to the right length, and in the right order, we put
a rod through the loop at one end of the warp and spread the threads out in a toothed
board called a raddle. This allows me to get the warp onto the loom at the width of the
finished project. Then we begin winding the warp onto the loom
11. The two sticks in Figure 12 maintain the threading cross, which helps keep those warp
threads in the same order as I placed them on the warping mill.
Here’s a simplified drawing of the loom, so you can see the essential parts of the loom,
and the path of the warp threads.
12. Now we begin what is for me one of the most tedious (but most important) parts of the
whole process: threading the warp through the heddles on the shafts. Each warp thread
must go through the eye of a heddle attached to the appropriate shaft, according to the
pattern design. If we make a mistake here, there will be an unsightly break in the
pattern.
The pictures on the next page show threading the heddles, drawing the threads through
the reed, and tying the warp threads onto the apron rod. (The apron is a sheet of canvas
that initially follows the path shown in green above. As weaving progresses, the apron
and then the woven cloth wind onto the cloth storage beam at the back of the loom.)
After tying on, we weave a few rows of waste yarn to check that the threading is correct
and to space the warp threads evenly.
13. Weaving
Okay, now we’ve almost gotten to the fun part - weaving! First, we wind weft yarn onto
a pirn, which fits into the fly-shuttle. The shuttle will carry the weft yarn across the
loom, in the space created between threads that are raised and threads that are not.
By the way, we never warp the loom for a single scarf. we always make the warp long
enough for at least 3 and sometimes 8 or more items. We leave enough length unwoven
at the beginning of the warp for the fringe of the first scarf, weave the first scarf, leave
enough warp unwoven for the second fringe of the first scarf plus the first fringe of the
second scarf, weave the second scarf, and so on, one after another. This particular
project used a technique we’d never woven before, so we only wove 3 scarves on the
warp - some weavers call this “full-sized samples.” Even though all items woven on that
14. warp share the same warp threads, the weft color and the design can be different for
each one, so each is unique.
Here’s a simplified drawing that shows the raised warp threads and the space through
which the shuttle travels.
Finishing
After weaving, we cut the warp from the loom. If the scarf will have a plied fringe, we
twist the fringe before washing and pressing the finished scarf. To twist the fringe, we
make two little bundles of warp threads, one bundle in each hand. we twist both
bundles in the same direction while letting them twist back on each other in the
opposite direction. Sort of like patting your head and rubbing your stomach at the same
time. It takes practice, and is hard on the hands, but it makes a lovely fringe for a silk or
lyocell scarf. After the scarf is washed and ironed, we’ll even out any group that is too
short or too long.
15. We do use the washing machine and dryer on most of our scarves, to remove any excess
dye and ensure that the article is pre-shrunk, so you don’t have any surprises after you
purchase it.
Here are some close-ups of the finished scarves woven on this warp, made by placing
the cloth directly on the scanner bed.
16. Here are some close-ups of the finished scarves woven on this warp, made by placing
the cloth directly on the scanner bed.
References:
http://textilelearner.blogspot.com/2013/07/different-types-of-loom-
conventional.html#ixzz3covCXB4E
http://textilelearner.blogspot.com/2012/02/list-of-weaving-machineries-list-
of.html#ixzz3couiiepC
http://textilelearner.blogspot.com/2014/11/description-of-the-different-motions-of-
loom.html#ixzz3cou46u6j
http://textilelearner.blogspot.com/2012/06/history-of-weaving-in-according-
with.html#ixzz3cowAM4OC
Sandra Rude, Textile Artist Three Springs Handworks www.3springshandworks.com