Compound Needle Warp Knitting PDF
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Summary
This document provides information regarding compound needle warp knitting machines. It details the knitting action and various components of the machine. It also presents a comparison between tricot and raschel machines as well as discussing the properties of warp knitted fabrics, and the use of such fabrics.
Full Transcript
Knitting Technology Compound-Needle Warp Knitting Machine â–ºFor increasing the productivity of the warp knitting machines a compound needle has been used instead of a beard or latch needle on modern machines. Compound-Needle Warp Knitting Machine â–º Compound Needle (main...
Knitting Technology Compound-Needle Warp Knitting Machine â–ºFor increasing the productivity of the warp knitting machines a compound needle has been used instead of a beard or latch needle on modern machines. Compound-Needle Warp Knitting Machine â–º Compound Needle (main Body) â–º Compound Needle (Closing Element) â–º Trick Plate â–º Sinker â–º Yarn End â–º Yarn Guide â–º Fabric Knitting Action Knitting Action â–ºNeedle rise and guide bar swing. With the sinkers forward holding down the fabric, the hooks and tongues rise, with the hook rising faster, until the head of the latter is level with the guide holes and is open. The guides then swing through to the back of the machine. Knitting Action Knitting Action â–ºThe overlap and return swing. The guides shog for the overlap and swing to the front of the machine; immediately, the hooks and the tongues start to descend with the tongues descending more slowly, thus closing the hooks. Knitting Action Knitting Action â–ºLanding and knock-over. The sinkers start to withdraw as the needles descend so that the old loop is landed onto the closed hook and then knocked-over as it descends below the sinker belly. Knitting Action â–ºAt this point the underlap occurs before the needles begin their upward rise and the sinkers move forward to hold down the fabric. Comparison Comparison Properties of Warp Knitted Fabric â–º More stable than weft knitted fabrics. â–º Big and small holes are possible. â–º Many designs are possible. â–º Highly course yarn can be used. â–º Technical fabric can be produced. Main products of Warp Knit â–º Nets â–ºCurtains â–ºTechnical fabrics â–º Covers â–º Covering sheets Use of Warp Knitted Fabric â–ºUse to fulfill technical demands, like, filters, seat covers etc. â–ºUsed as curtains, table covers. â–ºUsed as bed sheet.
