Melt-extrudable cold water soluble films

Details Melt-extrudable cold water soluble films Melt-extrudable cold water soluble films

1979-05-03

1980-07-29

Lesmes, George F.

Stock material or miscellaneous articles

Structurally defined web or sheet

Physical dimension specified

428202, 428500, 428913, 428 35, 260 334R, B32B 2706, B32B 2730

Patent

active

042151694

ABSTRACT:
Films, 0.5-10 mils thick, which are rapidly and completely soluble in cold water, and which are suitable for use as packaging film in automatic packaging equipment, can be prepared by conventional melt extrusion processes when prepared from a novel composition consisting essentially of 5-20 parts by weight of a polyethylene glycol (having an average molecular weight in the range between 325 and 550) in 100 parts by weight of a partially hydrolyzed low molecular weight polyvinyl alcohol.

REFERENCES:
patent: 3365413 (1968-01-01), Monoghan et al.
patent: 3374195 (1968-03-01), Bianco et al.
patent: 3607812 (1971-09-01), Takigaw
patent: 3997489 (1976-12-01), Coker
patent: 4119604 (1978-10-01), Wysong

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