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Yarn Friction
Testers
Used yarn friction recorders in stock :-
SDL Hairiness Friction Tester with pc and software.
Shirley friction testers, both integrated drum and separate drum types, all spares and accessories eg pens, paper circles etc.; SDL digital , Lawson Hemphill with friction meter test stand. Zweigle G530and schlaforst.Shirley yarn friction recorder. Meiners digital readout,Shirley banjo, Montex with printer, Our New Friction Tester Yarn friction is a recurrent source of difficulties in knitting most products on most machines. Problems may arise from inherently high friction yarns, form variations between batches, from a rogue cone within a batch or from changes that occur in storage. Whatever their origins, frictional variations are a major cause for concern, reducing productivity, disrupting work flow, increasing rejects and lowering quality. Friction usually shows up as an increase in knitting tension. Even if the tension does not rise enough to break the yarn, then in the absence of positive feed, high friction will give tight courses resulting in barre, short blanks, or other defects. Routine checking of incoming yarn can eliminate the problem at source by ensuring that
yarns are adequately lubricated before they are issued. If problems do occur, friction
testing is a powerful tool in diagnosing their cause.
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