Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – With bending – folding – winding – or wrapping means
Patent
1992-12-03
1995-02-14
Ball, Michael W.
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
With bending, folding, winding, or wrapping means
156472, 156474, 493428, B32B 3108
Patent
active
053891880
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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Ball Michael W.
Converting, Inc.
Yoder Michele K.
LandOfFree
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