Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1994-07-21
1996-12-31
Yoder, Michele K.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156204, 156205, 156207, 156210, 156227, B32B 3108
Patent
active
055890148
ABSTRACT:
A method and apparatus are provided for forming pleats in a thermoplastic material by feeding a continuous web of sheet-like thermoplastic material to a pleat forming apparatus and subsequently drawing the web through a bonding device. The pleat forming apparatus includes a rotating drum that has a plurality of apertures and a plurality of radially extensible teeth positioned in peripheral slots. The teeth are spring-biased inwardly to a retracted position within the drum but are extendable, under the urging of an internal cam, to a position wherein a portion of each tooth protrudes outwardly from the drum. The web is carried around the drum and the teeth protrude into the web forming pleats.
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Converting, Inc.
Yoder Michele K.
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