Textiles: spinning – twisting – and twining – Apparatus and processes – Web material
Patent
1974-04-25
1976-03-23
Watkins, Donald E.
Textiles: spinning, twisting, and twining
Apparatus and processes
Web material
73160, D01H 1332, D01H 1326, D01H 1314, G01N 2100
Patent
active
039451810
ABSTRACT:
Yarn is continuously supplied to a measuring system with an applied twist of at least 100 turns per meter. A beam having a continuous spectrum from the visible region to the near-infrared region is impinged upon the yarn and measurements are taken on the beams reflected from the yarn. The refected beams are divided into two parts. The characteristics of the near-infrared region are applied to one part, and luminosity characteristics are applied to the other. The ratio of intensity of the former to that of the latter is determined. This ratio corresponds to the uniformity of physical characteristics in the direction of the length of the yarn.
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Kawabe Noriyuki
Nakayama Takao
Yamazaki Chikayasu
Toray Industries Inc.
Watkins Donald E.
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