Patent ID: 7998048

Claim:
A method for forming a plastic bag having detachable coupons, said method comprising: (a) center-folding a feed of plastic film from a single wound roll in half by aligning a first edge of said plastic film with a second edge of said plastic film so as to form a fold; (b) cutting said plastic film along said fold, thereby creating a first plastic sheet and a second plastic sheet, said first plastic sheet having a first edge and a second edge, said second plastic sheet having a first and a second edge, wherein said first edge of said first plastic sheet is aligned with said first edge of said second sheet and said second edge of said first sheet is aligned with said second edge of said second sheet; (c) perforating said first plastic sheet and said second plastic sheet so as to form a first perforation parallel to said first and second edges of said respective sheets; (d) perforating said first plastic sheet and said second plastic sheet so as to form at least one perforation perpendicular to said first and second edges of said respective sheets, said at least one perpendicular perforation extending from said aligned second edges of said respective plastic sheets towards said parallel perforation; (e) welding said first plastic sheet to said second plastic sheet so as to form a weld between said aligned first edges and said first perforation parallel to said first edges and said second edges of said respective sheets, said weld dividing said plastic sheets into an upper portion and a lower portion; and (f) welding sides for said plastic bag so as to form a weld running perpendicularly across said plastic sheets from said aligned first edges toward said aligned second edges, said weld aligned with said perpendicular perforation so as to form sides for said plastic bag in said upper portion while welding over said perpendicular perforation in said lower portion thereby leaving said lower portion partially welded; whereby said plastic bag having detachable coupons is formed.