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US 4,284,229 AGranted
Reclosable cross-bottom sack
AssigneeWindmoller & Holscher
InventorsHorst Schmidt, Hans Struck
Life of this patent
Estimating the term…
Abstract
A reclosable cross-bottom sack is provided over the cross-bottom with a cover sheet having an incision and lines of weakness. A flattened tubular plastics emptying nipple for the sack is folded and cut at one end to define flaps, extends through the incision and is secured to the sheet by its flaps to lie between the cross-bottom and the cover sheet.
Claims8
A reclosable cross-bottom sack comprising:
- a tube section having a pulled-open base square closed to form a cross-bottom by folding inwardly and adhering side flaps of the base square;
- a base cover sheet applied and adhered to portions of the folded side flaps;
- and
- a flattened tube section having side folds and incisions along outer folded edges at one end thereof that define side flaps, the base cover sheet having an incision formed in a central region thereof with the flattened tube section extending through the incision in the base cover sheet and the side flaps of the flattened tube section being pulled away from each other and secured to the base cover sheet prior to the base cover sheet being applied to the fold side flaps of the tube section, a region of the base cover sheet including the incision and corresponding to the size of the flattened tube section when expanded not being adhered to the cross-bottom.
1 more element
Dependencies are inferred from the claim text.