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US 3,945,562 AGranted
Cross-bottom bag and method of making same
AssigneeWindmoller & Holscher
InventorFriedrich Franz Brockmuller
Life of this patent
Estimating the term…
Abstract
In a composite bag comprising an outer bag and an inner bag which is secured thereto by adhesive, the outer bag is provided with a cross-bottom folded closure at least at one end where no filling valve is provided. Adjacent said one end of the outer bag, the inner bag is closed by a weld seam and folded back on itself and secured in position so that, in a flattened condition of the composite bag when the cross-bottom folded closure lies snug against the bag body, the inner bag extends no further than the centre line of the cross-bottom closure.
Claims12
A composite cross-bottom bag comprising:
- an outer bag having longitudinal side edges and at one end a cross-bottom folded closure having a cross-bottom fold center line extending transversely between the longitudinal side edges of said outer bag, said outer bag being in a flattened condition with said cross-bottom closure lying snugly against the body thereof;
- and
- an inner bag disposed within said outer bag and secured thereto, said inner bag being folded back on itself to define a lower fold line, said lower fold line being positioned at a selected location between the cross-bottom fold center line and the other end of said outer bag.
Dependencies are inferred from the claim text.