Jesten David Neill - Oshkosh WI, US Curtis Randolph Barr - Neenah WI, US Dwight Dennis Redding - Appleton WI, US
Assignee:
Curwood, Inc. - Oshkosh WI
International Classification:
B32B 27/30 B32B 27/36 B32B 27/08
US Classification:
428 357, 428480
Abstract:
A non-oriented thermoformable packaging sheet having a rigid component layer comprising a blend of an aromatic polyester and a styrenic polymer, where the total amount of styrenic polymer present in the sheet relative to the total weight of the sheet is at least between 3. 0% and 4. 0% by weight. The packaging sheet has a thickness of at least 5 mil and a normalized impact strength of 0. 16 ft*lbf/mil or less total energy as measured in accordance with ASTM D3763-08 test method.
Multi-Layer Sheet Structure, Method Of Making Same And Containers Made Therefrom
A multi-layer paperless sheet structure having an oriented substructure 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 oriented 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 properties. A method is also provided for forming the sheet structure with its oriented substructure.
Multi-Layer Sheet Structure, Method Of Making Same And Containers Made Therefrom
A multi-layer paperless sheet structure having an oriented substructure is provided for making tubular containers for packaging dentifrice and other products. The sheet structure comprises a unique combination of polymer layers, including a uniaxially oriented 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 properties. A method is also provided for forming the sheet structure with its oriented substructure.