Apparatus for extruding plastic storage bags

Details Apparatus for extruding plastic storage bags Apparatus for extruding plastic storage bags

1990-07-25

1992-03-10

Ball, Michael W.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

15624418, 15624419, 156251, 156515, 156553, B29C 4708, B32B 3118

Patent

active

050947079

ABSTRACT:
An apparatus and method is provided for fabricating storage bags that have complementary sealing ribs out of stock material which may be a tubular extruded stock. When produced according to this apparatus and method, the storage bags have open mouths, that is, the sealing ribs are not engaged. The apparatus includes a separator bar to separate and disengage the sealing ribs prior to transversely joining the tube to form the side edges of the bag. Guide plates and a platen maintain alignment of the separated sealing ribs when the side edges are formed. The formed bags are then sequentially cut from the tube.

REFERENCES:
patent: Re29208 (1977-05-01), Naito
patent: 4024010 (1977-05-01), Boccia
patent: 4892512 (1990-01-01), Branson

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