CONT….

PRINCIPLE OF WARP KNITTING

PROPERTIES OF WARP KNITTING

KNITTING WARP MACHINE

(sequence of warp knitted machine)

RASCHEL MACHINETRICOT MACHINE

WARP KNITTED STRUCTURE

[1]  Lecturer’s note, by Miss Eryna Binti Nasir Knitting

SUMMARY

Knit fabrics are ‘composed of intermeshing loops of yarns’. Knitting is considered to be the second most frequently used method of fabric construction, after weaving. It is one of the several ways to trn threads or yarn into cloth. It is similar to crochet in the sense that is consist of loops  pulled through other loops. In the other words, knotting is the process of construction of a fabric made of interlocking loops of yarns by means of needle. The loops may be either loosely or closely constructured, according to the purpose of the fabric. The loop or stitches are interlocked using a needle which hold the existing loop and a new loops is formed in front of the old loop. The old loop is then brought over the new loop to form the knitted fabric. Knitting is different from weaving in the sense that are single piece of yarn can be used to create a fabric. The knitted fabric consist of horizontal rows known as courses and vertical columns of loops known as wales. Today, knitting is practiced manually, or with the help of machine.

The popularity of knitting has grown a lot within the recent years owing to the adaptability of various man-made fibers, the increased versality of knitting techniques and the growth in demand for wrinkle-resistant, stretchable, snug-fitting fabrics. Today, knitting fabrics form an intergrals part of hosiery, underwear, slacks, sweather, suits and coats, rugs and otherhome furnishing items.

Knitted textiles and apparel represent approximately one third of the global textile market, together with the advances of new technical applications for knitted textiles. Lets we talk about the new advancement of knitting technology in textile world.

Wholegarment’ technology was further developed in the 1990s by Shima Seiki of Japan.  Shima Seiki achieved this advance in knitting technology by developing the slide needle.  The slide needle resulted from research into the latch needle and the knitting process.  The needle consists of a hook located centrally between a flexible two-piece slider mechanism.  Stitches are transferred by the sliders during the knitting process.

Wholegarment clothes provide greater comfort than cut and sew clothes.  The absence of seams means that the fabric can fit close to the body and stretch more easily.  Wholegarment machines are also capable of producing complex designs.  2D fabric is replaced by 3D knitwear shaped and pleated as required.

Digital printing

Textile printing on garments such as sweatshirts, t-shirts and babywear has been dominated by screen printing technology .Set-up costs for screen printing have, in recent years, conflicted with the trend for short production runs.  Advances in digital inkjet printing technology during the 1990s and early 2000s have enabled machines to be built that can cost-effectively produce small print-runs on textiles.

Designs can be transferred directly from a computer and printed onto fabric in almost the same way as a word-processed document is printed onto paper.  Colours, sizes, shapes and looks of designs can be changed quickly using computer software.  The flexibility of the technology allows samples and short runs to be produced easily without the costs of setting up screens and wasted ink.  To prepare fabrics for digital printing, they are treated to ensure that fibres absorb the ink at the correct rate.  The printed garments are steamed to fix the dye on the fabric.

It has been estimated that by 2010 10% of all printed textiles will be digitally printed.[3]

REFERENCE

[1] Lecturer’s note, by Miss Eryna Binti Nasir Knitting

[2]

[3]  http://www.knittingtogether.org.uk

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