Multi-layer bag open at one side
AssigneeWindmoller & Holscher
InventorsFritz Achelpohl, Herbert Schmedding
Life of this patent
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Abstract
In a composite bag consisting of a paper or plastics outer envelope of one or more plies and a plastics inner envelope, the latter is closed at the base by a weld seam, the inner envelope material being incorporated in a welded or stitched base closure seam for the outer envelope. A line of weakness in the inner envelope material is disposed between the weld seam of the inner envelope and the base closure seam of the outer envelope.
Claims3
A bag open at one side, comprising an outer bag of at least one ply of paper and having a base seam and an inner bag of plastics film provided with a base weld seam at a first end and a Z fold at a second end wherein the first end of the inner bag is securely fastened to the base seam of the outer bag and having a tear-off line of weakness disposed between the base seam of the outer bag and the base weld seam of the inner bag.
A bag open at one side, comprising an outer bag of at least one ply of plastics material and having a base seam formed as a weld seam and an inner bag of plastics film provided with a base weld seam at a first end and a Z fold at a second end wherein the first end of the inner bag is securely fastened to the base seam of the outer bag and having a tear-off line of weakness disposed between the base seam of the outer bag and the base weld seam of the inner bag.
Dependencies are inferred from the claim text.