Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Reshaping running or indefinite-length work
Patent
1997-01-09
2000-03-21
Silbaugh, Jan H.
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Reshaping running or indefinite-length work
264167, 264296, 264555, 4253871, 4254031, B29C 4322
Patent
active
060399112
ABSTRACT:
A method and apparatus for capping a headed stem fasteners. The precursor web having a backing with a rear surface, a front surface, and a multiplicity of polymeric stems projecting distally from the front surface of the backing is fed into a variable nip between a heated member opposite a support surface. The support surface has a shape generally conforming to the contour of the heated member. The variable nip compressively engages the polymeric stems between the heated member and the support surface so that distal ends of the polymeric stems are deformed. The heated member can be a heated roll or a heated belt. The support surface may be a curved capping shoe or a belt shaped to create a particular nip profile.
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LaLiberte Thomas R.
Miller Philip
3M Innovative Properties Company
Bond William J.
Eashoo Mark
Griswold Gary L.
Silbaugh Jan H.
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