Row of continuous slide fastener coupling elements and...

A - Human Necessities – 44 – B

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A44B 19/04 (2006.01) A44B 19/12 (2006.01) B29D 5/00 (2006.01) B29D 5/06 (2006.01)

Patent

CA 1132779

ABSTRACT OF THE DISCLOSURE A row of continuous slide fastener coupling elements is in the form of a filamentary coil or zigzag made of thermoplastic synthetic resin. Each coupling element has a coupling head, a pair of legs extending from the coupling head, and, with the exception of end- most elements, a pair of connectors located remotely from the coupling head and extending each between the respect- ive one of the legs and a respective leg of an adjacent coupling head. The connector is heat-set by locally subjecting at least a portion of same facing away from the coupling heads to a relatively high heat-setting temperature, preferably only slightly below the melting point of the filament, while the rest of the filamentary coil is only subjected to a relatively low heat-setting temperature. A method of manufacturing a row of such continuous slide fastener coupling elements is also dis- closed and claimed. The invention provides the advance of improved stabilization of the pitch of the fastener and of a reduced production cost.

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