Stock material or miscellaneous articles – Hollow or container type article – Shrinkable or shrunk
Patent
1998-07-16
2000-04-04
Krynski, William
Stock material or miscellaneous articles
Hollow or container type article
Shrinkable or shrunk
428213, 428218, 428220, 428516, 264514, 264909, B65B 5300
Patent
active
060458828
ABSTRACT:
A multilayer, biaxially stretched, flexible, hermoplastic film having at least three (preferably five) layers (a), (b), and (c) with layer (b) disposed between layers (a) and (c), layers (a) and (c) each being a blend of at least 45% of a copolymer of ethylene and at least one C.sub.3 -C.sub.10 .alpha.-olefin, having a density of 0.900 g/cm.sup.3 to <0.915 g/cm.sup.3, and a melting point between 85.degree. C. and 125 .degree. C. with at least 5% of a high density polyethylene, and layer (b) being at least 45% of a copolymer of ethylene and at least one C.sub.3 -C.sub.10 .alpha.-olefin, having a density of 0.900 g/cm.sup.3 to <0.915 g/cm.sup.3, and a melting point of 85.degree. C.-125.degree. C., the film being 50.8 micrometers(.mu.) or less in thickness, and having a shrinkage value of at least 60% in at least one direction at 127.degree. C., and a process for making the film.
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Krynski William
Richeson Cedric M.
Viskase Corporation
Xu Hong J.
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