Plastic article or earthenware shaping or treating: apparatus – Control means responsive to or actuated by means sensing or... – Control means responsive to product weight or dimension
Patent
1997-04-16
1999-08-31
Mackey, James P.
Plastic article or earthenware shaping or treating: apparatus
Control means responsive to or actuated by means sensing or...
Control means responsive to product weight or dimension
425149, 425150, 425363, 425367, B29C 4346, B29C 4358
Patent
active
059451319
ABSTRACT:
Improvements for an apparatus for continuously molding small fastener elements integral with a base web from a flowable resin. The apparatus includes a rotating cylindrical mold roll defining small fastener element-shaped mold cavities in its peripheral surface. Resin is forced into the cavities under pressure at a gap between the mold roll and either a pressure roll, a pressure nozzle, or a belt. The improvements compensate for the crowning of the mold roll under high molding pressures, enabling the molding of wider products. Other gap controls include skewing, product thickness feedback, and active roll bending. Some pressure and backup rolls have compliant surfaces for conforming to the mold roll to avoid high contact loads that can damage the cavities.
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Formato Richard M.
Harvey Andrew C.
Jens Stephen C.
Kingsford Howard A.
Neumann J. Scott
Mackey James P.
Velcro Industries B.V.
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