Characterization of fancy yarn

Details Characterization of fancy yarn Characterization of fancy yarn

2006-11-15

2009-12-01

Sohn, Seung C (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

With circuit for evaluating a web, strand, strip, or sheet

C250S559230, C250S559310, C356S623000, C356S631000

Reexamination Certificate

active

07626189

ABSTRACT:
According to the method for characterizing fancy yarn, at least one characteristic of the fancy yarn is scanned along the longitudinal direction of the fancy yarn. Values of the scanning are evaluated and the results of the evaluation are outputted. The results of the evaluation are the fancy yarn parameters such as base yarn mass, base yarn diameter, slub distance, mass increase (ΔM) of a slub, slub diameter increase, slub diameter, slub length (LE) and/or slub total mass. The evaluation includes a smoothing or idealization of the scanning values, e.g. an idealization of the webs (91, 91′) as horizontal stretches and of the slubs (92, 92′) as trapeziums. the idealized course of the curve may be subtracted from the original course of the curve in order to obtain information on the slubs on the one hand, and on the virtual base yarn on the other hand. The occurring data quantity may be reduced by specifying parameters of the idealized course of the curve.

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