Methods of making fastener products

Details Methods of making fastener products Methods of making fastener products

2004-12-06

2010-06-01

Wollschlager, Jeffrey (Department: 1791)

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

C264S080000, C264S167000, C264S210200, C264S285000, C264S295000, C264S296000, C264S320000, C264S444000, C428S099000, C428S100000, C024S443000, C024S446000, C024S452000

Reexamination Certificate

active

07727440

ABSTRACT:
A method of forming a fastener is provided, including (a) forming, from a thermoformable material, a preform product having a sheet-form base and an array of preform stems integrally molded with and extending from the base to corresponding terminal ends; (b) heating the terminal ends of the stems to a predetermined softening temperature, while maintaining the sheet-form base and a lower portion of each stem at a temperature lower than the softening temperature; and (c) contacting the terminal ends with a contact surface that is at a predetermined forming temperature, lower than the softening temperature, to deform the terminal ends to form heads therefrom that overhang the sheet-form base. Fasteners and other methods of forming them are also provided.

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