Warp knitting is by far the most versatile fabric production system in textiles . Warp knitted fabrics can be produced flat, tubular or three-dimensional, to be elastic or stable, and with an open or closed structure.

Fabric width can be over 6 m wide without seams (or a multiple of this width if it is a net construction). Warp knitting machines are divided in two categories: tricot machines and Raschel machines. Raschel machines are normally used for the production of technical textiles. Stitch-bonding machines are regarded as a special form of warp knitting machines, especially suited for the manufacture of technical textiles, non-wovens and composites. The principle of weft insertion in warp knitting involves the insertion of the reinforcement fibres in parallel across the whole width of machine . According to Raz [2], the advantages of weft insertion systems are:

Working width of up to 6.22 m (245 inches),
Production speed of up to 1,400 rpm, that is, a weft insertion rate of up to 7,560 m/min*
(on the basis of 24 yarn ends) *depending on the relevant product to be produced,
Weft take-up speeds of up to 320 m/min (on the basis of 24 yarn ends),
Flexible weft insertion system (weft repeat, number of weft yarn ends),
All yarn types including high-tenacity and fragile technical yarns can be inserted,
High flexibility of yarn counts,
Very high efficiency and productivity.

Ref: 122747/2006-10-01


Other Database Pages Exist for this Phrase:
Bonding (Bonding is described as the process of connecting ...)


List of books: Warp,knitting

Related Articles

Bonding ■■■■■■
Bonding is described as the process of connecting wires from the package leads to the chip or bonding . . . Read More
Narrow Fabric Mills ■■■■■
Narrow Fabric Mills refers to the industry which comprises establishments primarily engaged in (1) weaving . . . Read More
Wadding ■■■■■
Wadding is referring to the act of hanging staff by fastening wads made of plaster of Paris and excelsior . . . Read More
Mill ■■■■■
Mill pertains to a factory in which metals are hot worked, cold worked, or melted and cast into standard . . . Read More
Textile ■■■■■
Textile refers originally to a woven fabric; now applied generally to any one of the following:; - - . . . Read More
Rubber ■■■■■
Rubber refers to a material that is capable of recovering from large deformations quickly and forcibly, . . . Read More
Yarn ■■■■■
Yarn - is described as a long continuous strand of interlocked fibers created when a cluster of individual . . . Read More
Spinning ■■■■■
Spinning is described as the process of drawing and twisting fibers together to produce thread or yarn. . . . Read More
Weaving ■■■■
Weaving is described as the method or process of interlacing two yarns of similar materials so that they . . . Read More
Machining ■■■■
Machining revolves around the group of processes in which a shape is generated by removing unwanted material . . . Read More

Other Related Pages