Method and apparatus for increasing the yield of rubber yarn

Textiles: manufacturing – Thread finishing – Surface modification of running length

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D02J 122

Patent

active

056448252

ABSTRACT:
A method and apparatus for stabilizing and increasing the yield of natural rubber yarn includes stretching the yarn three times while allowing the yarn to relax intermediate and following the stretching steps. The method is accomplished using a plurality of nip rolls wherein a second roll is caused to travel faster than a first roll or the second roll is larger than the first roll, or both, to achieve the stretch while the yarn is relaxed intermediate three such stretching assemblies.

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patent: 3671623 (1972-06-01), Fukushima et al.
patent: 4961307 (1990-10-01), Cook
patent: 5229060 (1993-07-01), Knox et al.
patent: 5259098 (1993-11-01), Gupta
patent: 5261023 (1993-11-01), Darsey
patent: 5365729 (1994-11-01), Phillips et al.
patent: 5413023 (1995-05-01), Babel et al.

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