Superimposed embossing of capped stem mechanical fastener struct

Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Reshaping running or indefinite-length work

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Details

2642102, 264296, 24442, 24450, 24452, B29C 4344

Patent

active

058689877

ABSTRACT:
There is provided a method of capping mechanical fasteners from a web having an array of upstanding stems. A heated surface member is positioned opposite a support forming a nip into which the web is fed. The heated surface member has a series of laterally spaced elongated peak and valley structures such that more than one peak and valley structure contacts and deforms each stem structure. The peak and valley groove structures provided asymmetric elongation and deformation of top portion of the stem structures forming hook heads.

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