Weft woven

Ca.rca.ss Construction. Carcasses are made of one or more pHes of a woven fabric bonded together with an elastomeric compound. Woven materials that are used include cotton, rayon, nylon, polyester, aramids, and glass, in the pure form or in blends. The fabrics are constmcted with warp yams that mn lengthwise along the belt, and filling (weft) yams that mn crosswise. There are a variety of fabric weaves available for specific appHcations... 

In chain mercerising, the weft threads of the fabric are kept under tension on a clip stenter. In a chainless merceriser the fabric dimensions are controlled by a series of rollers. The fabric is usually woven slightly wider to allow for some weft shrinkage. Yarn is mercerised in hanks between two movable rollers which create the required tension whilst knitted constructions may be mercerised in either slit or tubular forms. Chain and chainless mercerising have been compared [276]. 

The number of warp ends and the number of weft picks per unit length in a woven fabric written, e g., 23 x 23, the unit length being 1 inch on the imperial system of measurement. 

Rubber in strip form widely used in upholstery for domestic furniture and all forms of transport seating. There are two main types of mbber webbing - solid mbber and mbber reinforced with threads or fabric. There is also a woven type in which the warp threads consist of mbber filaments wrapped together in a cotton covering, the weft threads being of jute. 

A woven fabric having approximately the same number of warp threads per inch of width as weft threads. 

ISO 4602 1997 Reinforcements - Woven fabrics - Determination of number of yarns per unit length of warp and weft... 

Like PET, which further became more and more popular under various trade names (Dacron in USA, Rhodergon in France, Dallon in Russia and European Eastern countries), PTFE was initially used as thread, which could be woven or knitted to obtain vascular prostheses. These resulting woven devices, in which two sets of threads, respectively called weft and warp, cross each other perpendicularly, are known to easily fray near anastomoses. For knitted devices, in... 

The stitches or eyelets should not be so close together that there is risk that the pieces might tear. For similar reasons, tension and strain on the join should be avoided. The fixing (clips, eyelets, thread, etc.) should be compatible with the articles to be joined, not harder or more abrasive. Film, non-woven, and woven fabrics all may be finished in this way. With film and non-wovens the stitches should be loose and separated fairly widely thread should be of about the same diameter as the thickness of film or fabric. When selecting thread or other fixings for woven fabrics the gauges should be compatible with the warp and weft (not too thick, and not too fine). 

T-1975-20 Three light brown strands woven with black AMNH strands. Light brown appear to be S-twist warp, and black appear to be weft. Also black dyed border. Supplied by J. B. Bird (JB-5). 

Weft Ti-ansverse yarn in a woven fabric. Also called fill. 

Sieve cloth is woven from wire and the cloth is soldered and clamped to the bottom of cylindrical containers [10,13]. Although the apertures are described as square, they deviate from this shape due to the three-dimensional structure of the weave. In the weaving process, the weft wires are crimped on to the warp wires for added strength vigorous cleaning, for example with a wire brush, can separate the wires leading to oversize apertures. Fine sieves are usually woven with phosphor bronze wire, medium with brass, and coarse with mild steel. 

The traditional way of determining the median and spread of aperture sizes for a woven wire sieve is to size a randomly selected set of apertures using a microscope. Due to the method of manufacture, the measurements for the warp and weft will tend to differ. The limiting size may also be determined by using spherical particles. These are fed on to the sieve which is then shaken and the excess removed. Many spheres will have... 

Interaction in the form of a perpendicular interlacing of two yarn systems confirms the presence of woven structures. No selvage was observed thus the warp system could not be distinguished from the weft system. Both curvilinear and zig-zag trajectories of certain yarns with respect to the interlacing systems were recorded. These may or may not indicate surface decoration in the form of embroidery. 

Polyester/wool blends are very popular, the most common blend ratios are 55 45 and 70 30 polyester wool. Polyester rich blends are normally constructed from a texturised polyester fibre warp and 55 45 polyester wool weft yams. The 20 80 polyester/wool is woven from 55 45 warp and a pure weft yam. Worsted polyester/wool blend yams may contain 2.5 - 3% solvent extractable oil, compared with 3.5- 5% for similar all wool yams. The oils have much greater affinity for polyester fibre than wool and after normal piece scouring, the blends contain residual oil content of 0.6 - 1.2% compared with 0.3% for wool. Oxidation of combing oil is influenced by exposure to light which should be avoided before scouring. Addition of surfactant to combing oil improves the scourability of the blend fabric [75]. 

After marking the damaged area, woven fabrics can be separated into warp and weft threads and knitted fabrics unravelled in order to investigate the isolated threads more thoroughly. Do the threads from the damaged area show differences in diameter, twist level or yam composition Are stray fibres discernible ... 

The spoage-heod is a wotxlcii cylimlcr oovi red with a fabric, of whit ll the warp U hemp ainl the weft woolen yarn woven in liKtps like a BruiMeU ntriict. 

An accurate model of the side-light intensity is in the process of evaluation for textile structures (woven, knitted, etc.) by integration of the following parameters radius curvature, POP weft float and density of the fibre undulation along the fabric. This improvement is needed for reliable and safe clinical applications. 

All prototypes of fabrics were woven using the hand weaving loom ARM B60 from Biglen (Switzerland). The warp yams were composed of 330 dTex polyester from Sin-terama with a density of 20 cm POFs were introduced as weft using a modified shuttle. Figure 8.9 shows a schematic of the loom. 

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