effects of warp tension on co-we-nit fabrics A study of the physical and mechanical properties of co-we-nit warp knitted fabrics including the dimensional changes which occur during relaxation and the relationship between warp tension and fabric quality. by Subhas Chandra Ghosh

Cover of: effects of warp tension on co-we-nit fabrics | Subhas Chandra Ghosh

Published by The author in Bradford .

Written in English

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Edition Notes

M.Sc. thesis.

Book details

SeriesTheses
The Physical Object
Pagination152p.
Number of Pages152
ID Numbers
Open LibraryOL20236401M

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In this study, it was observed that the warp tension varies across the width of the loom. The warp tension was found to be lower at the two sides while higher in the middle of the loom. In order to investigate the loop length variations caused by the tension of effects of warp tension on co-we-nit fabrics book yarns, a warp knitted fabric with six lengthwise bands of different warp yarn tension was prepared.

The warp yarns of 44 dtex/12 nylon are wound at tensions of 4, 6, 8, 12, 16 and 20 cN. yarns are wound from each tension. The warp tension in the weaving loom have been the subject of many investigation [9] [10] [11][12] [13] to increase loom producing by decrease cutting of warp yarn, by suitable warp tension value.

Regression analysis of the effects of the WDC and loom settings on the measured warp tension was carried out. The measured mean warp tension increased with increasing yarn linear density and increased with increasing WDC.

The measured mean warp tension in the twill fabric was higher than that of the plain fabric despite having the same by: 2. Yehia E. Elmogahzy, in Engineering Textiles (Second Edition), Warp knits. Warp-knit fabric is similar to that of a woven fabric in that yarns are supplied from warp beams [10–15].The fabric is produced, however, by intermeshing loops in the knitting elements rather than interlacing warps and wefts as in a weaving machine.

This warp tension variation causes warp floats near the selvedge in the fabric. A high degree of care should be taken to avoid the variation in beam winding density. If the frequency of short end is very high in the Weaver's beam, it also generates warp floats in the fabric.

The manufacture of exceptionally fine, elastic warp knit fabrics places stringent demands on the warp knitting machine needles. Depending on the fabric, stripes may only become evident after finishing – often after large quantities of fabric have already been produced.

The use of Groz-Beckert products helps to minimize this risk. Tension problems on a warp I am making a stole out of 8/2 cottolin. I have warped the Jane Loom with ends, and have used all the dents in a effects of warp tension on co-we-nit fabrics book reed with an epi of   Beam the warp with a lot of tension, more than it will be under while you’re weaving.

This extra tension prevents the threads from biting down unevenly as the layers build up on the warp beam. The ideal is a solid, smooth, very hard package of yarns, the same degree of smoothness and solidness as a spool of sewing thread.

Tension Fabric is a revolutionary printing surface — it offers all of the high-resolution color options of traditional paper or vinyl-based signs and banners, including photo real images. Tension Fabric also allows unlimited 3-dimensional shapes and a wide variety of lighting options, textures and effects.

WARP Exhibits is a grand scale dye sublimation printer. We wholesale to the trade only and manufacture our own proprietary first class aluminum frames for our tension fabric structures, and SEG projects for trade show exhibits, displays and events. A mixture of science and art, weaving is nearly as old as human history.

Despite the many technological advances in the field, however, it is still virtually impossible to control each individual fiber in a woven structure.

To help you meet this and other weaving challenges, Handbook of Weaving covers every step of the process clearly and systemati4/5(8). Warp knitting can also be used to make pile fabrics often used for upholstery. Warp Knit Structure. Warp knitting is defined as a stitch forming process in which the yarns are supplied to the knitting zone parallel to the selvedge of the fabric, i.e.

in the direction of the wales. • Fabrics are textile surfaces. These structures are extremely long in comparison with their thickness.

• There are basically 3 methods in fabric manufacture: 1. Weaving 2. Knitting 3. Nonwoven fabric manufacture (felt making) • The yarn is used to produce fabrics by either weaving or knitting. A brush roller holds the warp sheet temporarily. Now the lease rods are inserted into the warp sheet and the ends are tightened by rotating brush roller.

When all the ends of warp sheet get tension properly, the tail of warp sheet is clamped by clamping stripes. Now knotter separates all the ends with the help of dressing brush. Paperback. Pub Date: 09 Pages: Language: Chinese in Publisher: China Textile Press warp knitting process theory.

production equipment and related products. including the basic concepts of the warp. warping. warp institutions made. warp of organization. warp raw materials. all kinds of warp knitted fabrics formation and warp knitting process calculation.

especially tricot. elastic Author: JIANG GAO MING. Manufacturer of Warp Knitted Fabrics - Knitted Fabrics, Warp Knit Mesh Fabric, Warp Knitting Dazzle Fabrics and Nylon Warp Knitted Fabric offered by Nirmal Sagar Enterprises, Ludhiana, Punjab.

Nirmal Sagar Enterprises. Industrial Area A, Ludhiana, Punjab. GST No. 03AAHFNK1Z0. Call 69% Response Rate. Send E-mail. Samira Farboodmanesh, H. Zhang, in Smart Textile Coatings and Laminates (Second Edition), The “crimp” effect.

During a fabric weaving process warp yarns are typically stretched out in straight lines, then weft yarns are woven across (above and below) the warp yarns.

The “tightening” of both warp and weft yarns results in the crimping effects on both directions. Warp control. The supervision of the warp threads is an essential factor for the fabric quality. The device used is called warp stop motion; it stops the running of the weaving machine at each thread breakage or even when the thread becomes slack, that is when the thread gets a tension level considerably below normal level (delicate fabrics).

Textile - Textile - The weaving process: Woven cloth is normally much longer in one direction than the other. The lengthwise threads are called the warp, and the other threads, which are combined with the warp and lie widthwise, are called the weft (synonyms are “filling,” “woof,” and “shoot,” or “shute”).

An individual thread from the warp, of indefinite length, is called an. The aim of this study was to investigate the effect of fabric structure on the stress relaxation of two bar warp-knitted fabrics (reverse locknit, sharkskin, queens’ cord), as well as to find the effect of strain value and loading direction on the stress relaxation of the fabrics.

Other articles where Co-We-Nit is discussed: textile: Special effects in warp knits: conventional warp knitting is the Co-We-Nit warp-knitting machine, producing fabrics with the properties of both woven and knitted fabrics. The machines need have only two warp-forming warps and provision for up to eight interlooped warp threads between each chain of loops.

count is better than weft count. yarn is more twisted than weft yarn which contains size particles is warp yarn. ly stripe effect is done in warp direction (both woven and printed fabric). yarns are relatively hairy yarn. crimp is expected to be less than weft crimp due to high warp tension on the loom.

One of the main problems in dyehouses is caused by the differences between the structural parameters of the reference fabric of which the dyeing recipe is known and the fabric to be dyed. In such a case, knowledge of the effects of the parameters such as warp and weft density and fabric porosity on the colour efficiency is of great importance for ‘right-first-time’ dyeing.

The tension of warp yarns is much highly interrupted in the weaving process due to its high and too low tension.

The position of the warp stop motion must be set for every produced new article manually, so to overcome this PLC recognized warp stop motion is used for controlling the warp.

Normally stripe effect is done in warp direction (both woven and printed fabric). Warp yarns are relatively hairy yarn. Warp crimp is expected to be less than weft crimp due to high warp tension on the loom. In woven fabric manufacturing process, warp and weft yarn is used for interlacement for producing woven fabric.

After producing a woven. The warp yarns are placed in the longitudinal in woven fabrics & the weft yarns are used for cross wise interlacing with the warp yarns. Cloth is produced on loom or weaving machine.

Fabric or Cloth: Fabric is a technical term and cloth is a commercial term. In this study, 12 types of warp-knitted fabrics with different stitch patterns, including tricot, cord, and pillar stitches, were produced. The effect of the stitch type on the tensile properties of the fabrics was examined.

The stitch type was found to significantly affect the tensile properties of the warp-knitted fabrics. Tetra-axial woven fabric was introduced for structural tension member applications. Fabric has four yarn sets as ±bias, filling and warp (Kazumara, ).

They are interlaced all together similar with the traditional woven fabric. So, the fabric properties enhance the longitudinal direction. Effects of Shed Unbalancing Systems in Weaving,In this book, an Active Shed Unbalancing System was described and constructed on a narrow fabric loom using a computer controlled hydraulic actuator.

It was first used as a passive shed unbalancer which confirmed previous findings that weaving resistance (W.R.) or Beat-up Force (B.U.F) could be substantially reduced and.

Slashing Warp Sizing. Drawingin and Tyingin beat-up beating become break cause cent cloth connecting considerable considered constant cost creel crimp depends device direction drive effect efficiency energy example fabric factor fibers filling yarn force frequency friction give given guides harness important Conversion of Yarn to 5/5(2).

Warp and weft are the two basic components used in weaving to turn thread or yarn into lengthwise or longitudinal warp yarns are held stationary in tension on a frame or loom while the transverse weft (sometimes woof) is drawn through and inserted over-and-under the warp. A single thread of the weft crossing the warp is called a vary (for instance, in North America, the.

The aim of this book is to provide the background of the warp knitting patterning with a large amount of simulated 3D images of the structures, corresponding to the modern available tools for this.

The warp knitted structures can have very complex architectures and very limited understanding exists on how they are built. The pattern book will allow. A woven fabric base material comprises: multiple reinforcing fiber warp yarns, each of which comprises a fiber bundle and which are arranged in parallel with each other; and multiple reinforcing fiber weft yarns, each of which comprises a fiber bundle and which are arranged in parallel with each other and are also arranged so as to intersect the reinforcing fiber warp yarns.

Elastic core-spun yarns which is used as weft yarn for textile fabrics gained great importance in the last decade its due to the fact that stretch and recovery, comfort fits and flexibility properties.

The technological progress made the dual core-spun yarn production possible. The dual core-spun yarns are composed of filament that contributes durability and polyurethane based elastane that.

29, warp knit polyester fabric products are offered for sale by suppliers onof which knitted fabric accounts for 87%, % polyester fabric accounts for 74%, and bag fabric accounts for 42%. A wide variety of warp knit polyester fabric options are available to.

Fabric is produced in sheet or flat form using one or more sets of warp yarn. The yarns are fed from warp beams to a row of needles extending across the width of the machine.

Warp Knitting are four types. Tricot Knit: Tricot fabric is soft, wrinkle resistant & has good drapability. Tricot knits are used for a wide verity of fabric weights & design. By causing a differential tension between the warp threads during weaving.

By using various counts of yarn for weaving different types of fabrics. By using warp and weft yarns of different counts in the same fabric. Methods of fabric representation. A weave is the interlacing pattern of the warp and weft. There are two ways of interlacement. As a general rule, current fabrics in use are designated by the working tension or strength of the fabric, shown in pounds per inch of width (PIW), i.e.

80, and pound fabrics, etc. When dealing with carcass fabrics, we work with two separate strength measurements. The first is. In theory — Yes. It's just a matter of adding the right plastisizers to control the optical constants of the polymer — and you have transparent fibers.

Producing a fabric from the fibers described above is much harder. You will have to create a sp. Custom fabric printing and tension fabric displays are our specialties. Dye sublimation, UV Curable printed, or plain fabric, all up to 16′ wide seamless.So, now that we know how to fill with fabric and use clipping masks, let's talk about how to warp the fabric so it actually looks like it's wrapping around the body instead of just a flat fill on the croqui.

I want to start by working on just a plain old dress here, and the file is in the exercise files if you want to open it up and give this a try. Let me explain first why we. Method 3: Choose a warp-dominant structure to show off your painted warp.

If only one side of your fabric will be visible, you can showcase the colors of your painted warp by choosing a weave structure that shows more warp on one side.

For example, 3/1 twill will produce a warp-dominant fabric on the top of the fabric, since 75% of the warp is.

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