Method of forming a chain of meandering coupling elements for sl

Details Method of forming a chain of meandering coupling elements for sl Method of forming a chain of meandering coupling elements for sl

1989-12-20

1991-08-27

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

With severing, removing material from preform mechanically,...

Forming continuous work followed by cutting

264157, 264168, 264283, 264296, 264320, 425814, B29C 4326, B29L 500

Patent

active

050431250

ABSTRACT:
A method of forming a chain of meandering or zig-zag coupling elements for slide fasteners includes dividing or bifurcating a continuous length of substantially cross-sectionally circular monofilamentary material axially into identical halves of substantially semi-circular cross-section immediately prior to introduction to a forming apparatus. The identical halves may be provisionally joined together to provide a cross-sectionally circular monofilament and divided back into respective halves immediately prior to formation thereof into respective rows of coupling elements for slide fasteners.

REFERENCES:
patent: 3445915 (1969-05-01), Cuckson et al.
patent: 3942237 (1976-03-01), Ongaro
patent: 3993725 (1976-11-01), Brown
patent: 4062919 (1977-12-01), Rojahn et al.

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