Pasteurizable thermoplastic film and receptacle therefrom

Details Pasteurizable thermoplastic film and receptacle therefrom Pasteurizable thermoplastic film and receptacle therefrom

1981-09-15

1983-07-05

Robinson, Ellis P.

Stock material or miscellaneous articles

Hollow or container type article

Cellular material derived from plant or animal source

2065242, 156229, 15624419, 15624424, 1562733, 1562755, 264 22, 2642101, 264176R, 427 44, 428220, 428516, 428518, 428520, 428349, 428910, 428522, B65D 8572, B65D 6540, B32B 2732

Patent

active

043918620

ABSTRACT:
Disclosed is a multi-layer, heat shrinkable, thermoplastic packaging film which can be heat sealed to itself to provide strong seals at pasteurizing temperatures. The preferred film has four layers including, in order, a sealing surface layer comprising a blend of propylene-ethylene copolymer and (butene-1)-ethylene copolymer, a layer comprising ethylene-vinyl acetate copolymer which may be cross-linked to further increase high temperature strength of the film as desired; a relatively gas impermeable layer comprising a copolymer of vinylidene chloride; and, a surface layer of the same blend as the sealing layer. Receptacles such as end seal and side seal bags can be made from the film at a faster rate than with prior art films and these receptacles have the high temperature seal qualities of propylene polymers and the hot water shrink capabilities of ethylene polymers.

REFERENCES:
patent: 3496061 (1970-02-01), Freshour
patent: 3634553 (1972-01-01), Foglia
patent: 3741253 (1973-06-01), Brox
patent: 3754063 (1973-08-01), Schirmer
patent: 3891008 (1975-06-01), D'Entremont
patent: 4169910 (1979-10-01), Graboski
patent: 4207363 (1980-06-01), Lustig

Affiliated with

Also associated with

Rating

Pasteurizable thermoplastic film and receptacle therefrom does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Pasteurizable thermoplastic film and receptacle therefrom, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pasteurizable thermoplastic film and receptacle therefrom will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1440103