Apparatus for the cutting of columns of thread loops

Details Apparatus for the cutting of columns of thread loops Apparatus for the cutting of columns of thread loops

1977-10-21

1979-07-03

Mackey, Robert

Textiles: cloth finishing

Cutting

Pile loops

26 13, D06C 1308, D06C 1310

Patent

active

041595580

ABSTRACT:
A pile fabric, especially velvet, can have a selection of yarn strands appearing on one of its faces severed by means of a focused laser beam. According to the invention, the zone of focus of the laser beam is brought successively into contact with predetermined portions of each of the strands for a period of time sufficient to cause combustion of at least some of the fibers forming each strand. The invention provides means for shifting the focus of the laser beam accordingly.

REFERENCES:
patent: 3634646 (1972-01-01), Berger
patent: 3679863 (1972-07-01), Houldcroft
patent: 3742183 (1973-06-01), Castro et al.
patent: 3749878 (1973-07-01), Sullivan et al.
patent: 3877119 (1975-04-01), Gierse et al.
patent: 3925864 (1975-12-01), Gilpatrick
patent: 3977055 (1976-08-01), Gilpatrick
patent: 3977056 (1976-08-01), Gilpatrick
patent: 3982309 (1976-09-01), Gilpatrick
patent: 4065837 (1978-01-01), Gierse et al.

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