Polyethylene films exhibiting low blocking force

Details Polyethylene films exhibiting low blocking force Polyethylene films exhibiting low blocking force

1991-10-07

1993-10-05

Seccuro, Jr., Carman J.

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

Synthetic resins

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

525240, 525320, 525324, 428516, C08L 2308, C08L 2320

Patent

active

052506126

ABSTRACT:
Film having good blocking properties and low coefficient of friction is prepared without the presence of antiblock additives from certain thermoplastic ethylene interpolymer products. The thermoplastic ethylene interpolymer products have a density of about 0.935 g/ml or less, a melt flow ratio. I.sub.10 I.sub.2, of at least about 8, and at least about 0.5 percent by weight of the interpolymer product has a weight average molecular weight of at least about 1,000,000 grams/mole. The interpolymer products are a blend or composite of ethylene polymers or copolymers and comprise at least a first interpolymer of ethylene with at least one alpha-olefin monomer. Preferably, the interpolymer products have a melt index, I.sub.2, of from about 0.1 to about 4 grams/10 minutes. The interpolymer products can be made using discrete polymer blends, or preferably, in a multiple reactor sequence. Blown film made from the interpolymer products is especially useful in grocery sack applications.

REFERENCES:
patent: 2770608 (1956-11-01), Barker et al.
patent: 3104232 (1963-09-01), Clark et al.
patent: 3108981 (1963-10-01), Clark et al.
patent: 3170889 (1965-02-01), Hyson
patent: 3205190 (1965-09-01), Braus et al.
patent: 3396137 (1968-08-01), Wharton
patent: 3489824 (1970-01-01), Anspon
patent: 3491073 (1970-01-01), Marinak
patent: 3647738 (1972-03-01), Foster
patent: 3914342 (1975-10-01), Mitchell
patent: 3969470 (1976-07-01), Spiegelman
patent: 4048412 (1977-09-01), Caumartin et al.
patent: 4136072 (1979-01-01), Ladish et al.
patent: 4269948 (1981-05-01), Nicco
patent: 4320088 (1982-03-01), Nicco
patent: 4336352 (1982-06-01), Sakurai et al.
patent: 4405774 (1983-09-01), Miwa et al.
patent: 4414369 (1983-11-01), Kuroda et al.
patent: 4438238 (1984-03-01), Fukushima et al.
patent: 4530914 (1985-07-01), Ewen et al.
patent: 4692501 (1987-09-01), Mineshima et al.
patent: 4792588 (1988-12-01), Suga et al.
patent: 4792595 (1988-12-01), Cozewith et al.
patent: 4814135 (1989-03-01), Heitz
patent: 4814377 (1989-03-01), Joyce
patent: 4874820 (1989-10-01), Cozewith et al.
patent: 4935474 (1990-06-01), Ewen et al.
patent: 4937299 (1990-06-01), Ewen et al.
patent: 4939217 (1990-07-01), Stricklen
patent: 5026594 (1991-06-01), Akao
patent: 5047468 (1991-09-01), Lee et al.
patent: 5079287 (1992-01-01), Takeshi et al.

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