Method and apparatus for folding and fusing the elements of a sl

Details Method and apparatus for folding and fusing the elements of a sl Method and apparatus for folding and fusing the elements of a sl

1977-03-22

1978-07-18

Simmons, David A.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156274, 156380, 156461, 264 25, B29C 1904

Patent

active

041013603

ABSTRACT:
An apparatus for folding the coupling elements of a slide fastener string includes a pair of electrodes connected to a source of high frequency electromagnetic energy and a series of guide sections. The string is drawn through the guides and the coupling elements are heated and softened by the electromagnetic field and folded by the guides.

REFERENCES:
patent: 2822575 (1958-02-01), Imbert et al.
patent: 2841852 (1958-07-01), Burbank
patent: 2871911 (1959-02-01), Goldsworthy et al.
patent: 3267514 (1966-08-01), Porepp
patent: 3445915 (1969-05-01), Cockson et al.
patent: 3993724 (1976-11-01), Takamatsu

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