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US 4,096,225 AGranted
Method of making a fastener element
AssigneeTextron Inc.
InventorJohn A. Kowalski
Life of this patent
Estimating the term…
Abstract
Method of molding plurality of spaced fastener elements onto parallel filaments. A pair of leg portions of each fastening element have, respectively, a projection and an opening, the projection and opening mating to interlock the leg portions. The fastening elements are formed by directing the parallel filaments to a cavity wheel which has mold cavities enclosed by a band, and then injecting plastic material through gate openings in the band into the mold cavities to form a train of fastener elements on the parallel filaments.
Claims6
A method of forming a continuous train of fastener elements comprising the steps of
- forming a train of transverse elongated fastener elements having end portions of each elongated fastener element molded around respective filaments of a pair of spaced continuous parallel filaments,
- said forming including the formation of an opening in one surface of each elongated fastener element at one end portion thereof adjacent to a respective one of the filaments,
- said forming also including the formation of a projection on the same one surface at the other end portion of each elongated fastener element adjacent the other filament, and
- folding the train of elongated fastener elements longitudinally to bring ends of the one surface of each fastener element together and to insert each projection into the corresponding opening to secure the end portions of the fastening elements together and to reinforce the union of the filaments with the fastening elements.
1 more element
Dependencies are inferred from the claim text.