Loom on the weft to the fabric and control the warp yar […]
Loom on the weft to the fabric and control the warp yarn density and width of the machine. In the original weaving machine with a beating weft to the weaving. China's Spring and Autumn Period warp knitting machine use razor and beating knives combined knife 杼 (see 杼). Ancient hand-woven carpet with rake-shaped weft feeder. In the Qin and Han Dynasties, the use of bamboo reed in addition to beat-up effect, but also to control warp yarn density and fabric width, is a major improvement. 1733 British J. Kay made reed. Metal reed is divided into glue reed and welding reed. Glued reed is to reed reed wire tied around the reed edge of the bar, and then fixed with glue. Commonly used in cotton, linen, wool production. Welding reed is reed sheet with steel wire reed edge of the reed, and then sealed with solder. The reed dents are evenly arranged and firm in texture, suitable for weaving silk, mesh, tape and thick fabrics with high warp density. The height of the reed is determined by the size of the opening. The thickness of the reed varies with the reed number. The larger the reed number, the thinner the reed is. Reed number commonly used unit length reeds denote that the general metric system with a length of 1 cm or 10 cm reed number, English with 1 inch or 2 inches length reed number. The reed number is determined by warp density, weft shrinkage, and the number of warp threads per reed gap. The number of penetration per indentation affect the appearance of the fabric and warp ends, usually through the number of 1 to 4. General reed commonly used fabric distribution reed evenly. Weaving special fabric available deer reed uneven distribution of special reed. In order to reduce the breakage of the warp yarns, a double row of dents can be used for weaving a plain weave of high warp density. Some air-jet looms in order to facilitate jet weft reed use. Water-jet looms with stainless reeds (see jet looms). Some multi-shuttle weaving loom with rotating spiral weft to promote the weft carrier, and the weft into the weaving mouth to complete weft insertion and beating action. Reed is one of them.