Patent classifications
D
TEXTILES; PAPER
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D02
YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
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D02G
CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
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3/00
Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
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D02G3/02
Yarns or threads characterised by the material or by the materials from which they are made
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D02G3/10
Yarns or threads formed from collagenous materials, e.g. catgut
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D02G3/10

Leather fiber for spun yarn
12601091 · 2026-04-14 · ·

Provided is leather fibers for use in yarn. The leather fibers forming the yarn are obtained from cowhide and a thickness index (M) of the leather fibers satisfies Equation 1:
M=D1/D260[Equation 1]
where D1: average thickness of the 10 fibers having the highest thickness in 1 mg of leather fibers, and D2: average thickness of the 10 fibers having the lowest thickness in 1 mg of leather fibers.

Leather fiber for spun yarn
12601091 · 2026-04-14 · ·

Provided is leather fibers for use in yarn. The leather fibers forming the yarn are obtained from cowhide and a thickness index (M) of the leather fibers satisfies Equation 1:
M=D1/D260[Equation 1]
where D1: average thickness of the 10 fibers having the highest thickness in 1 mg of leather fibers, and D2: average thickness of the 10 fibers having the lowest thickness in 1 mg of leather fibers.