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US 7,093,978 B2Granted
Pre-cut plastic bag roll, method and apparatus for making same
OwnerGregorio Lim Taninventor
Life of this patent
Estimating the term…
Abstract
A polyethylene produce bag roll includes a plurality of plastic film bags joined to one another with a perforation line. The perforation line is slit at least one end for a first predetermined distance to aid in tearing the bag from the roll. The perforation may also include a chisel cut to aid in removing bags from the roll in a dispenser equipped with a perforation parting means. The bags may be gusseted or ungusseted. Outer surfaces of the bags are corona treated to enhance adhesion of printing ink to the bags. The bag roll may be cored or uncored.
Claims9
A pre-cut plastic bag roll, comprising:
- a continuous web of plastic bags formed from polyethylene material, each of said bags comprising:
- a front wall, said front wall having an inner surface, an outer surface, first and second side edges, a top edge and a bottom edge;
- a rear wall, said rear wall having an inner surface, an outer surface, first and second side edges, a top edge and a bottom edge;
- said front wall being joined to said rear wall at respective first and second side edges thereof;
- said front wall being sealed to said rear wall adjacent respective bottom edges thereof;
- an open mouth disposed at said top edges;
- said front and rear walls of each of said bags being removably attached by a front straight perforation line at said bottom edge to said top edge of the front wall of a subsequent bag in said web and a rear straight perforation line at said bottom edge to said top edge of the rear wall of a subsequent bag in said web, said front straight perforation line having a front first end and a front second end;
- said rear straight perforation line having a rear first end and a rear second end;
- said front and rear straight perforation lines being in registration with each other;
- said front perforation line being slit inwardly from at least one of said front first and second ends for a first predetermined distance;
- said predetermined distance being greater than the length of a single perforatiom said rear perforation line being slit inwardly from said at least one of said rear first and second ends for said first predetermined distance;
- and
- said web being rolled to form a bag roll.
10 more elements
Dependencies are inferred from the claim text.