Film extruded from a blend of ethylene copolymers

Details Film extruded from a blend of ethylene copolymers Film extruded from a blend of ethylene copolymers

1996-07-03

1999-07-20

Smith, Edward J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Physical dimension specified

525240, B32B 702, C08L 2300, C08L 2304

Patent

active

059254483

ABSTRACT:
A film comprising a blend of (i) a linear low density polyethylene and (ii) an in situ blend of copolymers of ethylene and one or more alpha-olefins having 3 to 8 carbon atoms wherein (a) the weight ratio of component (i) to component (ii) is in the range of about 0.01:1 to about 6:1; (b) the blend has been extruded, under extrusion conditions, at a die rate in the range of about 6 to about 20 pounds per hour per inch of die circumference and at a die gap in the range of about 0.020 to about 0.075 inch; and (c) the film exhibits essentially no melt fracture.

REFERENCES:
patent: 4525322 (1985-06-01), Page et al.
patent: 4536550 (1985-08-01), Moriguchi et al.
patent: 4705829 (1987-11-01), Kwack et al.
patent: 4814135 (1989-03-01), Heitz
patent: 5149738 (1992-09-01), Lee et al.
patent: 5210142 (1993-05-01), Kale et al.
patent: 5514455 (1996-05-01), Michie et al.

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