Classifications of shuttless weaving
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This document discusses different types of shuttleless looms. It classifies shuttleless looms into three categories: partially guided solid carrier looms like projectile looms; fully guided solid carrier looms like rapier looms; and fluid carrier looms like air jet and water jet looms. Projectile looms use small projectiles to carry the weft yarn through the shed, rapier looms use fork-like rapiers, and fluid carrier looms use compressed air or water to propel the weft yarn. Shuttleless looms are faster, quieter, and produce better fabric quality than shuttle looms.
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Air jet Loom
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.
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The document summarizes projectile weaving, which uses gripper projectiles to insert weft threads into warp threads. Key points:
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This document describes an experiment to determine cotton fiber length using a Shirley comb sorter. Key steps include:
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2) Removing fiber groups one by one and laying them out to create a fiber length distribution curve.
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The document provides information on the physical properties of raw cotton including fiber length, fineness, strength, cleanliness, and chemical deposits. It then discusses the components and processes of a blow room line. The key goals of the blow room are to open compressed cotton fibers with minimal damage, remove impurities, and create an evenly blended sliver. Common blow room machines include bale openers, mixers, cleaners, and scutchers which use beaters, grids, and air flow to open, clean, and blend the fibers into a uniform lap for input to the carding process.
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2. This allows multiphase looms to achieve 3 to 4 times higher productivity compared to single-phase looms when weaving simple standard fabrics.
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- The ring traveler, guided by the spinning ring, moves around the high-speed spindle to wind the yarn without a drive of its own. This converts the roving into a twisted
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2. It explains different weft patterning motions like weft mixing, drop box, and circular box motions that allow inserting different weft yarns to create patterns.
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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.
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2. The fabric rope is circulated in the dyeing machine by a horizontal rotor called a winch, which gives the machine its name.
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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.
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Wrap spinning
This presentation discusses various methods of wrap spinning yarns. It describes the selfil, repco, hollow spindle, ring frame, differential twist, wrap rotor, woolen card, and parafil systems. The hollow spindle method is identified as the most important technique, involving drafting fibers through a hollow spindle while wrapping with a filament to produce wrap yarns in a single continuous process without true twisting. Other methods like the selfil and repco systems use self-twisting to wrap core fibers with filaments.
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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.
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Needle punching is a mechanical process that uses barbed needles to reposition fibers from a horizontal to a vertical orientation in fiber webs. The needle penetration penetrates the web, interlocking the fibers and increasing fiber orientation and fabric strength. Key parameters that affect the needle punching process include fiber and web properties, needle penetration depth, punch density, needle arrangement, and the direction of needling passes. Needle punching is used to manufacture nonwoven fabrics for applications like shoe felts, blankets, automotive insulation, carpet backing, and composites.
Weaving ( cordillera and region 1)
Weaving is a method of fabric production that involves interlacing two sets of threads perpendicular to each other at right angles. Various Philippine ethnic groups produce distinctive textiles using weaving techniques and natural dyes. Ikat weaving involves resist dyeing the warp or weft threads before weaving to create patterns, while fabrics from Kalinga, Bontoc, and other groups feature geometric designs and nature motifs woven with cotton, abaca, or other fibers.
Different types of loom
Loom is machine or device which is used to produce woven fabric. It is the central point of whole process of cloth production. In other word, a loom is a mechanism or tool used for weaving yarn and thread into textiles. Looms vary in a wide assortment of sizes. They come in huge free standing hand looms, tiny hand-held frames, to vast automatic mechanical tools. A loom can as well pertain to an electric line construction like that of a wiring loom. The main task of looms is to clutch the twist threads under pressure to enable the progress of interweaving of the woof strands. The loom's system and exact form can differ to some extent; however it still performs the basic application.
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Care labels a need of the day
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A review of jacquard fabric
Jacquard fabrics are complex patterned fabrics created using jacquard looms or knitting machines. There are several types of jacquard fabrics including brocade, damask, French jacquard, poly x catonic jacquard, jacquard nets, velour jacquard, blackout fabrics, and matelasse. Jacquard fabrics can be used for clothing, home decor, upholstery, and more. The jacquard loom was invented in 1801 and allowed for intricate patterns through individually controlled warp threads. Modern jacquard looms are computer controlled and can produce large intricate patterns without repeats.
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Leveling agents are chemicals that help promote even dye distribution on fabrics during dyeing. They work by slowing the initial dye uptake to allow more uniform absorption over time. Leveling agents are classified as anionic, cationic, or non-ionic depending on their ionic nature, and include compounds like fatty acids, alcohols, and alkyl aryl sulphonates. Their effectiveness is tested by measuring factors like strike percentage and active content to evaluate uniformity. Careful selection of leveling agent type and concentration is needed to control dye exhaustion for consistent color without compromising yield.
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Similar to Classifications of shuttless weaving
Modern looms
Modern looms can be classified into several types including projectile, rapier, air jet, water jet, and multi-phase looms. Projectile looms use small bullet projectiles to grip the weft yarn and carry it through the shed. Rapier looms use long rapiers or double rapiers to carry the weft across the loom. Air jet looms use jets of air to propel the weft at speeds up to 600 picks per minute, making them suitable for light and medium fabrics. Water jet looms use jets of water to carry measured lengths of weft across the loom, consuming less power. Multi-phase looms have several sheds opened simultaneously with weft inserted in
Modern Loom
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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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.
RING FRAME Machine
What is ring frame?
How it Works,
Purpose,
Action of Ring Frame,
Limitations,
Faults,
Shyamoli Textile Engineering College
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- The document discusses improving the productivity of ring spinning frames through studying various loss factors like end breakage rate, idle percentage, doffing loss percentage, and pneumafill waste percentage.
- Trials were conducted on a ring frame machine spinning 9 combed wool and 24 carded cotton counts. Results showed reductions in all loss factors, ranging from 12-42% improvements, after implementing technical and work practice changes.
- Key factors that influence ring frame productivity like drafting system, spinning geometry, twist generation, and winding were reviewed to identify areas for improvement.
Ring frame
INTRODUCTION
The ring spinning will continue to be the most widely used form of spinning machine in the near future, because it exhibits significant advantages in comparison with the new spinning processes.
Following are the advantages of ring spinning frame
• It is universally applicable, i.e. any material can be spun to any required count
• It delivers a material with optimum characteristics, especially with regard to structure and strength.
• It is simple and easy to master
• The know-how is well established and accessible for everyone
Rotor spinning
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.
Drawframepresentation 151013181202-lva1-app6891
The document discusses developments in draw frame technology. Recent developments include higher production rates up to 1000 m/min, improved drafting systems like 4-over-3 with pressure bars, automatic sliver regularity controllers, quality monitoring systems, automatic doffing systems, and pre-set sliver length measuring. Additional new developments mentioned are automatic break draft setting, clean coil technology to reduce cleaning needs, pneumatic pressure heads for rollers, and tension measuring systems.
Present Condition/Scenario of Modern Loom in Bangladesh
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.
Bdft ii, tmt, unit-i, loom & itz types
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.
Modern loom
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.
Warping phpapp3648
The document discusses different types of warping processes and machines. It describes beam warping, sectional or patterned warping, and ball warping. Beam warping is direct warping that produces beams with up to 1000 ends, while sectional warping is indirect and produces narrow tapes that are later rewound onto a beam, allowing for complex patterns. High-speed warping machines directly wind ends onto a beam from many packages at once. Sectional warping machines first wind yarns onto a drum before rewinding them onto a beam, enabling fancy multi-colored fabrics. Both processes aim to produce a warp beam with uniformly spaced, tensioned ends of a predetermined length.
woven fabric manufacturing
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.
WARPING PRESENTATION
The document discusses various aspects of warping, which is the process of winding yarn onto beams to create a warp. It describes the objectives of warping as uniformly spacing individual yarn ends across the full width to create a warp of specified length and width. The types of warping discussed are beam warping, pattern band or drum warping, and ball warping. Key components of warping machines like the creel, headstock, and pressure roller are also outlined. The document provides details on various creel types, requirements for good warping, potential defects in warped beams, and importance of warping for weaving.
Unconventional method of weft insertion
This document describes three main methods of shuttleless weaving: projectile, rapier, and air jet.
Projectile looms use small gripper bullets to carry the weft yarn across, but dragging the yarn can strain weak yarns. Rapier looms use rapiers, either single long rapiers or double rapiers that transfer the yarn between two rapiers. Air jet looms insert yarn using compressed air nozzles but cannot produce varied fabrics. Water jet looms use high pressure water to shoot the yarn across but are only suitable for hydrophobic fibers.
Warping
This document provides information about different types of warping processes and warping machines. It discusses beam warping, patterned band warping, and ball warping. It describes the components and functions of direct and sectional warping machines. Direct warping machines wind yarn directly onto beams while sectional warping machines produce beams in two stages by first winding yarn onto a drum and then rewinding onto a beam. Maintaining uniform tension and spacing of yarn ends is important for producing quality warps. Common faults like broken ends, uneven beams, and snarl formations are also summarized along with their causes and remedies.
Spinning [compatibility mode],Yarn types classification
This document provides information about various processes in yarn manufacturing, including blow room, carding, draw frame, combing, speed frame, and ring frame. It defines key terms, describes machine components and their functions, and explains the processes that occur at each stage of yarn production to transform raw fibers into yarn. Flow charts are included to illustrate the inputs, machines, and outputs at each stage of the yarn manufacturing process.
Roving
The document discusses the roving frame machine, which comes after the draw frame in the spinning process. The roving frame drafts sliver from draw frame cans into a thin roving strand and applies a light twist. It operates by drafting the sliver, guiding it through the flyer to apply twist, and winding the roved strand onto bobbins. While complicated, the roving frame produces packages of roving suitable for input to the ring frame. Efforts to eliminate this step have not succeeded due to the high drafts required in ring frames.
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Present Condition/Scenario of Modern Loom in Bangladesh
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3. Future areas of research include using nanoencapsulation to further enhance the effectiveness and longevity of cosmetic textile products.
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Classifications of shuttless weaving
- 1. Classification of Shuttle-less weaving Vignesh Dhanabalan - vigneshdhanabalan@hotmail.com
- 3. ◦ Partially guided solid carrier ( Projectile loom) ◦ Fully guided solid carrier (Rapier loom) ◦ Fluid carrier Air jet lom Water jet loom D i f f e r e n t k i n d s o f s h u t t l e l e s s l o o m sVignesh Dhanabalan - vigneshdhanabalan@hotmail.com
- 4. PROJECTILE LOOM Also 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. 20 and 60g in mass. Projectile loom can produce up to 300 ppm and is less noisier then the shuttle loom. Vignesh Dhanabalan - vigneshdhanabalan@hotmail.com
- 5. RAPIER LOOM fork-like opening Handing over of weft yarn from one head to the other at centre of warp shed. Subsequently both heads move back in opposite directions. Vignesh Dhanabalan - vigneshdhanabalan@hotmail.com
- 6. A I R J E T w a t e r J e t Energy is stored in fluid through compression. The released energy propels weft along with a certain amount of fluid. Vignesh Dhanabalan - vigneshdhanabalan@hotmail.com
- 7. Shuttleless Loom. Insert weft yarn by means of projectile, rapier, air and water jet Weft yarn is placed outside the weaving loom. The speed is faster, quiet and better fabric quality
- 8. COMPARISON OF SHUTTLE AND SHUTTLELESS LOOMS • 110 to 225 picks per minute (ppm). weave 2 to 4 times as much as conventional looms The physical and mental strain upon the weaver is less. Strain upon the warp threads is reduced due to smaller depth of shed. Laborious process Ware and tear is high owing to high maintenance cost. • The shuttle sometimes leads to abrasion on the warp yarns and at other times causes thread breaks.
- 9. LIMITATIONS OF SHUTTLE LOOM Unit-I / Shuttleless Weaving/ Vignesh Dhanabalan 9 Shuttle looms are limited as long as their fundamental constructions involved in the use of shuttle propulsion power required for picking is proportional to the cube of the loom speed • loom speed is increased from 200 to 300 picks per minute, the power requirement would increase by a factor of (3/2)3 i.e. 3.4 times approximately The above results are show the following disadvantages: 1. Greater strain imposed on the picking mechanism, thus rendering it liable to frequent failure. 2. Greater amount of noise and vibration. 3. Because of superior energy in shuttle, greater strain is again imposed on the checking mechanism. 4. The movement of shuttle will be more difficult to control and there will be a greater possibility of its escape from the loom.
- 10. MACHINERY Loom speed Weft insertion rate loom width Machine down time Yarn breakage rate Loom Type Loom Width in cm Speed in rpm WIR (MPM) Conventional Power loom 180 180 300-400 Projectile loom 180-540 300-450 700-1500 Rapier-Rigid 150-400 300-550 1000-1200 Rapier- Flexible 110-420 325-550 1000-1300 Water Jet 150-230 1000 1600-2000 Air Jet 190-430 500- 1100 1200-2520 Linear Multiphase 190 1100- 1600 2000-3000 Drum type Multiphase 170-190 2430- 3230 4000 (Twill)& 6000 (plain) Unit-I / Shuttleless Weaving/ Vignesh Dhanabalan 1 0