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1. (WO2001024654) APPARATUS AND METHOD FOR MAKING A MECHANICAL FASTENER

Pub. No.:    WO/2001/024654    International Application No.:    PCT/US2000/003478
Publication Date: Apr 12, 2001 International Filing Date: Feb 10, 2000
IPC: A44B 18/00
B29C 67/00
Applicants: 3M INNOVATIVE PROPERTIES COMPANY
Inventors: LEVITT, Leon
KOBE, James, J.
KAMPFER, Robert, D.
HARGRETT, Brian, T.
ARSENAULT, Cathy, M.
Title: APPARATUS AND METHOD FOR MAKING A MECHANICAL FASTENER
Abstract:
A method and apparatus for forming a mechanical fastener. A preferred embodiment of the method includes moving a substrate along a web path, where the substrate includes a first major surface and a plurality of stems extending from the first major surface of the substrate and each of the stems includes a stem end, radiantly heating the stem ends to form softened ends, and thereafter deforming the softened ends into convex heads with a deformable surface. A preferred embodiment of the apparatus includes a web conveyor, where the web conveyor defines a web path, a heating source located adjacent the web conveyor and a deformable surface located down the web path from the heating source, where the deformable surface includes a durometer hardness of greater than 10 Shore OO and less than 70 Shore A.