Shrink film

Details Shrink film Shrink film

2007-06-26

2007-06-26

Nutter, Nathan M. (Department: 1711)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C525S240000, C428S034900, C428S035100, C428S036910, C428S335000, C428S461000, C428S476300, C428S500000, C428S507000, C428S515000, C428S518000, C428S523000

Reexamination Certificate

active

10642949

ABSTRACT:
Heat-shrinkable monolayer and multilayer films are disclosed. The films are formed of a blend of a polyethylene copolymer having a CDBI of at least 70%, a melt index I2.16of from 0.1 to 15 g/10 min., a density of from 0.910 to 0.940 g/cm3, a melt index ratio I21.6/I2.16of from 30 to 80, and an Mw/Mn ratio of from 2.5 to 5.5, and a second polymer, such as a low density polyethylene (LDPE). The heat-shrinkable films have a combination of improved optical and mechanical properties.

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