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Document Number
US Patent 6502371
Issued Date
January 7, 2003
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Abstract
In the process of die-cutting bag stacks to form individual bag tops, die-cut handle apertures, or other mounting apertures, die blade configurations forming the vent lines of an array of vent apertures are also used to bond the outer surfaces of the front and rear bag walls together. The die-cutting operation selectively bonds the successive front and rear bag walls together at or adjacent the cut edges of the vent lines, thereby allowing the bags in a bag stack to subsequently self-open when dispensed.
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Number of Claims:
9
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Owner
Bob Dematteis Co. (Grass Valley, CA)
Published
January 7, 2003
Application Number
09/796,120
Filed
February 27, 2001
US Classification
53/459   206/554 383/103 383/37 53/572
Int'l Classification
B65D   33/00   (20060101)   B65D   33/08   (20060101)   B65D   33/06   (20060101)   B65B   43/00   (20060101)   B65B   43/14   (20060101)  
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Parent Case
CROSS-REFERENCES TO RELATED APPLICATIONS This application references U.S. Provisional Patent Application No. 60/089,582, filed Jun. 17, 1998 by the named inventor herein entitled Plastic Bag Bundling System. Patent application Ser. No. 09/258,010, filed Feb. 25, 1999 entitled Plastic Bag Bundling System now U.S. Pat. No. 6,171,226 issued Jan. 9, 2001 is likewise incorporated by reference as if fully set forth herein. This application references U.S. Provisional Patent Application No. 60/089,583, filed Jun. 17, 1998 by the named inventor herein and Don Pansier of Green Bay, Wis. entitled Automatic Ventilating System. U.S. patent application Ser. No. 09/258,033, filed Feb. 25, 1999 entitled Automatic Ventilating System now U.S. Pat. No. 6,113,269 issued Sep. 5, 2000 is likewise incorporated by reference as if fully set forth herein. This application references U.S. Provisional Patent Application No. 60/092,232, filed Jul. 9, 1998 by the named inventor herein entitled Plastic Bag Manufacturing Process. U.S. patent application Ser. No. 09/257,843, filed Feb. 25, 1999 entitled Automatic Ventilating System now U.S. Pat. No. 6,186,933 issued Feb. 13, 2001 is likewise incorporated by reference as if filly set forth herein. The above Patent Applications--and all of them--are herein incorporated by reference as if fully set forth herein with the subject matter of the present invention being independently patentable over all.
USPTO Field of Search
53/459   53/571   53/572   206/554   383/37   383/103  
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