Method for developing bulk in a strand of synthetic textile yarn

Details Method for developing bulk in a strand of synthetic textile yarn Method for developing bulk in a strand of synthetic textile yarn

1977-03-15

1978-04-11

Rimrodt, Louis K.

Textiles: manufacturing

Thread finishing

Surface modification of running length

D02G 100

Patent

active

040830918

ABSTRACT:
A strand of synthetic textile yarn is fed continuously in a relaxed condition downwardly through a bulking chamber having a series of vertically spaced successive baffle plates with adjacent baffle plates extending from opposite sides of the chamber and at opposite downward inclinations in the path of the downwardly feeding yarn for haphazard curling of the yarn at the plates and progressively greater accumulation of yarn at each successive plate. Steam is applied to the yarn accumulation at the lowermost baffle plate and suction means above the chamber imposes an upward draft to the steam, with the steam acting on the relaxed and accumulated yarn for substantially complete development of bulk therein. The bulked yarn falls between and from the baffle plates onto a reciprocating plate that acts to loosen the bulked yarn and minimize entanglements. The yarn is allowed to fall from the reciprocating plate in a free condition without substantial loss of the developed bulk and is collected in a container in free-falling condition with the container being portable to allow subsequent treating of the bulked yarn therein without further direct handling of the yarn.

REFERENCES:
patent: 3099064 (1963-07-01), Haynes
patent: 3159902 (1964-12-01), Mertens
patent: 3341911 (1967-09-01), Smith
patent: 3397437 (1968-08-01), McNeill et al.
patent: 3619875 (1971-11-01), Gates
patent: 3644968 (1972-02-01), Elliott et al.
patent: 3729831 (1973-05-01), Kosaka et al.
patent: 3785017 (1974-01-01), Jacobs et al.

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