Plastic and nonmetallic article shaping or treating: processes – With severing – removing material from preform mechanically,... – Making hole or aperture in article
Patent
1994-02-17
1995-09-12
Woo, Jay H.
Plastic and nonmetallic article shaping or treating: processes
With severing, removing material from preform mechanically,...
Making hole or aperture in article
83 16, 83 24, 83100, 83345, 425290, B23D 2512
Patent
active
054494826
ABSTRACT:
A method for perforating foil includes cutting out subsequent series of perforations with heated bushes, grasping the cut-out discs and removing these discs from the foil from which they have been cut out. A device for carrying out this method utilizes first and second cylinders which are rotated relative to each other with a first one of the cylinders being provided with heated, perforating bushes that are received with holes provided in the second cylinder. Concentric with the holes provided in the second cylinder are nipples. A vacuum source is connected to the nipples such that the nipples can grasp the cut-out discs and then a compressed source is connected to the nipples for easy removal of the discs from the device.
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Faddar Frans M.
Faddar Luc
Davis Robert B.
Machine-Service NV, Naamloze Vennootschap
Woo Jay H.
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