Separating weft thread waste of a single uncontaminated material

Details Separating weft thread waste of a single uncontaminated material Separating weft thread waste of a single uncontaminated material

1998-10-02

2000-03-21

Falik, Andy

Textiles: weaving

Warp manipulation

Traversing

139302, D03C 704, D03D 4740, D03J 104

Patent

active

060390867

ABSTRACT:
A method and an apparatus serve to process a catch selvage that has been trimmed from a web being woven on a loom, so as to separate weft thread ends and leno threads from the catch selvage to produce a type-pure weft thread waste and a type-pure leno thread waste or reusable leno threads. The term "type-pure" refers to a waste material containing a single uncontaminated type or color of thread material, e.g. wool vs. synthetic or blue vs. red. After the catch selvage (1) has been trimmed from the edge (11) of the woven web (2), the leno threads (4, 4') are untwisted from each other by being rotated by an untwisting apparatus (5) in a direction opposite the binding twist applied by the leno device (18). Thereby, the full leno binding (1A) is completely unbound and opened, so as to release the weft thread ends (3A), which are then sucked into a proper one of weft waste collection containers (6B) by a suction pipe (6A), so that only a single type-pure and/or color of weft thread end is collected in each container (6B). The unbound leno threads (4) are collected as a type-pure waste or are rewound on spools to be reused. Alternatively, by using endless closed-loop leno threads (4'), the leno threads (4') are continuously recirculated back to the leno device (18), without intermediately being wound onto spools.

REFERENCES:
patent: 3556164 (1971-01-01), Golobart
patent: 4549582 (1985-10-01), Kung et al.
patent: 4691743 (1987-09-01), Venot
patent: 4894276 (1990-01-01), Bryant
patent: 5518039 (1996-05-01), Haeussler et al.
patent: 5560400 (1996-10-01), Meyns et al.
patent: 5735316 (1998-04-01), Hehle

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