Multiple layer flexible sheet structure

Details Multiple layer flexible sheet structure Multiple layer flexible sheet structure

B - Operations, Transporting

32

B

154/140, 18/783,

B32B 27/08 (2006.01) B32B 27/32 (2006.01)

Patent

CA 1250720

MULTI-LAYER SHEET STRUCTURE, METHOD OF MAKING SAME AND CONTAINERS MADE THEREFROM Abstract of the Disclosure A multi-layer paperless sheet structure having an oriented sub- structure is provided for making tubular containers for packaging dentrifice and other products. The sheet structure comprises a unique combination of polymer layers, including a uniaxially ori- ented polymer (polypropylene or high density polyethylene) layer. The sheet structure has two exterior heat sealable surfaces for forming the tubular containers by lap heat seal and the resulting containers exhibit improved strength and deadfold retention pro- perties. A method is also provided for forming the sheet struc- ture with its oriented substructure,

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