Biaxially oriented and heat-set multilayer thermoplastic...

Details Biaxially oriented and heat-set multilayer thermoplastic... Biaxially oriented and heat-set multilayer thermoplastic...

2006-06-20

2006-06-20

Woodward, Ana (Department: 1711)

Stock material or miscellaneous articles

Structurally defined web or sheet

Physical dimension specified

C264S171280, C264S209500, C264S514000, C264S211120, C428S474900, C428S475800, C428S476100, C428S910000, C430S531000, C430S532000, C430S536000

Reexamination Certificate

active

07063885

ABSTRACT:
A multi-layer, thermoplastic film bi-axially oriented at a stretching ratio ≧ to about 3.0:1 in the machine direction and at a stretching ratio ≧ about 6.0:1 in the transverse direction, which film comprises a layer a) comprising at least 50 wt. % of a crystalline or partially crystalline co-polyamide characterized by a Tg≦100° C. and at least one outer heat-sealing layer b) comprising a polyolefin, said film being further characterized in that it has a % free shrink at 100° C.≦3 in each direction.

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