Effect of knitted structures and yarn count on the properties. The primary knitting elements of circular knitting machines are needle, cam, and sinker. Two packages of yarn can be seen in this diagram feeding into a circular weft knitting machine. In a weft knitted structure a horizontal row of loops can be made using one thread and the thread runs in the horizontal direction. Knitting processes are usually classified into two categories. Weft knit reinforcement fabrics highland industries. Hayavadana jamakhandi and others published modification of weft knit fabrics find, read and cite all the research. No matter what youre looking for or where you are in the. Most of the knitted fabric is produced by weft knitting. If you have your own pdf patterns you want to add to this page, please submit photo and file.
Convert r markdown to pdf or html earth data science. Then the html shows the text, code, and results of the code that you included in the rmd document. In weft knitting, yarn is knitted horizontally and in a circular form. Download pdf advances in knitting technology free online. Flat weft knitting machine made by universal compauy in germany with needle gauge of 12inch and racking 9 needles and two knitting device was prepared for experimental works. Weft knitting was the first type of knitting invented, stockinette stitch is the most common form of stitch used and it was first discovered in artefacts from as early as the 11 th century. Weft formations have yarns which are knit across the width of the fabric while warp formations have yarns being knitted along the length of the fabric. Warp knitting is the sequential formation and interlinking of loops in an axial direction on a lateral array of needles with at least one separate thread being supplied to each needle. Weftknitting is a very flexible technology and its main limitation is in the range of yarn tex capability of any particular machine gauge. Jun, 2015 62015 2 warp knitting warp knitting is a family of knitting methods in which the yarn zigzags along the length of the fabric, i. Introduction to textile fabrics knitting umt admin panel. For automation of cam length in weft knitting machine its characteristics will be describe later some limitations must be noted which are using the minimum amount of energy, the mechanism must be.
The three classes of weft knitting machines practical guide. Fabrics in both these categories consist essentially of a series of interlinked loops of yarn. It is produced when a needle holding its loop t also receives the new loop, which becomes a tuck loop. Weft knits are used extensively for apparel such as tshirts, sweaters, activewear, and hosiery.
Weft knitted fabrics can be produced in circular or flat knitting machine. Most of the knitted fabrics are produced by weft knitting. Click download or read online button to get weaving and knitting technology book now. This site is like a library, use search box in the widget to get ebook that you want. Knitting is the construction of an elastic, porous fabric, created by interlocking yarns by means of needles. Calculation and analysis of horizontal and vertical lapping angles in tricot warp knitting. In weaving it needs warp and weft yarn for produce woven fabric but in knitting, fabrics are produced from a series of yarn in warp or weft directions. Geometrical modelling of plain weft knitted fabrics article pdf available in indian journal of fibre and textile research 321. Many other stitches can be used in weft knitting such as purl, double knitting, and patterns such as cable, fair isle and aran can be achieved using.
In weft knitting, the entire fabric may be produced from a single yarn, by adding stitches to each wale in turn, moving across the fabric as in a raster scan. Weft knitting article about weft knitting by the free. In this method the fabric is produced by simple up and down movement of the needles, which is provided by the profile of a cam system. The three main groups of weft knitting machinery may broadly be classified as either straight bar frames, flats, or circulars, according to their frame design and needle bed arrangement. This paper introduces a knitting technique for making innovative curved threedimensional 3d spacer fabrics by the computer flatknitting machine. It is usually knitted with one piece of yarn, and can be. Knitting technologies and tensile properties of a novel. Notice that information from the yaml header title, author, date is printed at the top of the html document. The lengthwise or longitudinal warp yarns are held stationary in tension on a frame or loom while the. Weft knit definition is a knit fabric produced in machine or hand knitting with the yarns running crosswise or in a circle. Knitting is done by set of connected loops from a series of yarn in warp or weft direction.
This paper introduces a knitting technique for making innovative curved threedimensional 3d spacer fabrics by the computer flat knitting machine. When the needle is raised sufficiently high by the camming action to obtain the yarn in the hooked portion of the needle and the old loop is below the latch i. Weft knitting free download as powerpoint presentation. Weft knit definition of weft knit by merriamwebster. You can find patterns for girl, scarf patterns, interesting home project patterns, and more. Weft knitting machine setup procedure cotton incorporated. Warp knitting machines, feed yarns from beams, and each yarn is formed into loops as the yarn moves in a vertical direction along the length of the fabric.
The processes in which fabrics are produced by set of connect loops from a series of yarns in warp or weft direction is defined as knitting. Since a typical piece of knitted fabric may have hundreds of wales, warp knitting is typically done by machine, whereas. During manufacturing, a number of reinforcement yarns made of aramid fibres are inserted into 3d spacer fabrics along the weft direction to enhance the fabric tensile properties. Instead of the stitches running horizontally across the knitted piece of fabric, like in weft knitting, they run vertically down the fabric. Knitting technology definition and types of knitted. Knitting meshes or interlocks these loops to form a fabric.
Jun, 2015 weft knitting in weft knitting, the loops are formed across width of the fabric each weft thread is fed, more or less at right angles to the direction in which the fabric is produced. Slide 3 weft and warp knitting the yarn supply for weft knitting is in the form of yarn packages while the yarn supply for warp knitting is in the form of warp beams, hence the term warp knitting. Structural modifications commonly used in weft and warp. There are two classifications of knits weft and warp. Successive tucks on the same needle are placed on top of each other at the back of the head of the held loop and each, in turn, assumes a straighter and more horizontal appearance and theoretically requires less yarn. Hand knitting needles, circular knitting machines, and flat machines are used to produce weft knits. Etsy is the home to thousands of handmade, vintage, and oneofakind products and gifts related to your search. In weft knitting, the loops are formed across width of the fabric each weft thread is fed. Warp knitting types of warp knitting uses of warp knitted. Automation of stitch length cams in high speed flat weft knitting machines. The fabric is produced in sheet or flat form using one or more sets of warp yarns. Weft knitting is knitting across the fabric and the term is mainly used when you are machine knitting. Effect of knitted structures and yarn count on the. In weft knitting, the yarns fed into the machine form loops across the width of the fabric.
In the more common weft knitting, the wales are perpendicular to the course of the yarn. Think almost all knitting techniques except short rows and some. Warp knitting is the least common form of knitting. A list of commonly used knitted fabrics and its construction are explained. Warp knitting differs from weft knitting in that each needle loops its own thread. Double knits are weft knitted fabrics made with two sets of needle beds. Fibers that the generally used to make double knits are polyester and wool. Weaving and knitting technology download ebook pdf, epub. Weft knitting machines feed individual yarns from yarn packages to the knitting needles, each one forming a horizontal row of loops in a width wise fabric direction. Weft knitting is a knitted piece of fabric where the stitches run from left to right horizontally across the fabric. Weft knitting types are circular and flat knitting. This article describe the edge of the weft knitted fabric weaving method, except in the early period of the yarn processing, also includes the following steps. Warp and weft are the two basic components used in weaving to turn thread or yarn into fabric. Structural modifications commonly used in weft and warp knitting.
Weft knitted fabric is generally highly elastic and highly drapeable, two attributes, which make it suitable for a wide range of apparel applications. The shuttle will carry the weft yarn across the loom, in the space created between threads that are raised and threads that are not. Weft knitting knitting textiles free 30day trial scribd. Knitting technology download ebook pdf, epub, tuebl, mobi. But when small yarn loops reinforce each of those intersections, the result is a weft knit reinforcement fabric of uncommon strength and flexibility for critical reinforcement needs. Knitted fabrics and types list of knitted fabrics textile. Click download or read online button to get weaving and knitting. Like weaving, knitting is a technique for producing a twodimensional fabric made from a onedimensional yarn or thread. Pdf recent developments in weftknitting science and technology. In circular knitting, the fabric is produced on the knitting machine in the form of a tube, the threads running continuously around the fabric. Weft knit reinforcement fabrics when warp and weft yarns cross at 90degree angles, the result is common cloth. Study on the performance optimization of knitted fabric. Back loop a knitted loop fomied on the dial needles on a. Study on the performance optimization of knitted fabric anti.
A tuck stitch is composed of a held loop, one or more tuck loops and knitted loops fig. The process involves the use of two pairs of needles set at an angle to each other. Pdf modification of weft knit fabrics researchgate. It is usually knitted with one piece of yarn, and can be made either. The coverage of the text includes flat, circular, full fashioned, hosiery, raschel, tricot, and crochet production.
What is warp and weft knitting textile fashion study. Weft knits are produced by interlooping the yarn in the horizontal weft or filling direction. Some of them dont come in pdf but you can still print it out in doc form. When weft knitting with two sets of needles, or when overlapping on the front guide bar of a warp knitting machine, it is possible to introduce the inlaid yarn into the structure merely by supplying the yarn across the backs of the needles the front of the machine in order to trap the yarn in the fabric. Knitting is the technical way to make thread or yarn into fabric, likewise there are some other ways of making fabrics are weaving, crochet, etc. In weaving, threads are always straight, running parallel either lengthwise. We can form a knitted fabric by using the weft as well as warp knitting techniques. Online control system and numerical modeling method. Pdf geometrical modelling of plain weft knitted fabrics. The rising demand on knitted garments all over the world motivate the researcher to research about various knitted fabric, production processes, developing new structures. Download weaving and knitting technology or read online books in pdf, epub, tuebl, and mobi format.
Knitting technology details the fundamental principles of knitting. When weft knitting with two sets of needles, or when overlapping on the front guide bar of a warp knitting machine, it is possible to introduce the inlaid yarn into the structure merely by supplying the yarn. When knitting is complete, the html file produced will automatically open. For comparison, knitting across the width of the fabric is called weft knitting. First, i wind weft yarn onto a pirn, which fits into the flyshuttle.
See more ideas about wefts, knitting, threads magazine. Basic weft knitting loops formation, properties and effects. Weft knitting is a common type of knitting in which one continuous thread yarn runs crosswise in the fabric making all of the loops in one course. The 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 overandunder the warp. There are three basic types of loops of weft knitting. Fundamentals of knitting to form a fabric by the intermeshing of loops of yarn. Mar 26, 2016 basic weft knitting loops formation, properties and effects. This presentation introduces the two main methods of knitting, weft and warp. No matter what youre looking for or where you are in the world, our global marketplace of sellers can help you find unique and affordable options. Woven structures weft knitting machines feed individual yarns from yarn packages to the knitting needles, each one forming a horizontal row of loops in a width. In weft knitting, the yarns fed into the machine form loops across the width of the. The needles produce parallel rows of loops simultaneously that are interlocked in a zigzag pattern. Weft knitting in weft knitting, the loops are formed across width of the fabric each weft thread is fed, more or less at right angles to the direction in which the fabric is produced.
Basically warp and weft knitting process are totally different from one to another. Calculation and analysis of horizontal and vertical. This is the standard method of producing a tuck stitch in weft knitting fig. The title tackles the topics that are relevant to the application of knitting technology in education, industry, or commerce. Mar 14, 2018 warp knitting represents the fastest method of producing fabric from yarns. Weft knitted fabric is porous and comfortable both for outer garments and undergarments. By contrast, in warp knitting, one yarn is required for every wale. Each weft thread is fed at right angles to the direction of fabric formation. Weft knitted fabric is generally highly elastic and highly drapeable, two attributes, which make it suitable for a wide range of. Warp knitting represents the fastest method of producing fabric from yarn. Apr 21, 2019 double knits are made from the interlock stitches and its variations. Weft knitting definition of weft knitting by the free.
But the importance of the lapping angle has not been. But when small yarn loops reinforce each of those intersections, the result is a weft. Classification of knitting machines knitting handicrafts. Weft knitting process an overview sciencedirect topics. Weft knitting loops are formed by needles knitting the yarn across the width of the fabric. All the knitting patterns listed here are designed by myself. Download advances in knitting technology ebook pdf or read online books in pdf, epub, and mobi format.