Barry S Cooper, 512557 4Th St, Saint Paul, MN 55110

4504434, Mar 12, 1985

Dec 1, 1982

6/446056

Barry A. Cooper - Wayzata MN

Bemis Company, Inc. - Minneapolis MN

C08J 518
C08J 710
C08L 2304
C08L 2320

264 22

A composition adapted for processing into stretch wrap film. The composition comprises between about 40 and about 90% by weight of a high molecular weight copolymer of ethylene and vinyl acetate containing between about 4 and about 25% by weight of repeating units derived from vinyl acetate and having a melt index of between about 0. 1 and about 4. The composition further comprises between about 8 and about 55% by weight of a linear copolymer of ethylene and a higher alkene. Such linear copolymer has a specific gravity of between about 0. 917 and about 0. 945. The invention further includes stretch wrap film, a method of producing stretch wrap film of differential cling properties, and a composite film constituted of a layer of the aforesaid ethylene vinyl acetate copolymer and a layer of the linear copolymer of ethylene and a higher alkene.

4425268, Jan 10, 1984

Feb 6, 1980

6/119192

Barry A. Cooper - Wayzata MN

Bemis Company, Inc. - Minneapolis MN

C08L 2316
C08L 2320
C08L 2312
C08L 3104

524110

A composition adapted for processing into stretch wrap film. The composition comprises between about 40 and about 90% by weight of a high molecular weight copolymer of ethylene and vinyl acetate containing between about 4 and about 25% by weight of repeating units derived from vinyl acetate and having a melt index of between about 0. 1 and about 4. The composition further comprises between about 8 and about 55% by weight of a linear copolymer of ethylene and a higher alkene. Such linear copolymer has a specific gravity of between about 0. 917 and about 0. 945. The invention further includes stretch wrap film, a method of producing stretch wrap film of differential cling properties, and a composite film constituted of a layer of the aforesaid ethylene vinyl acetate copolymer and a layer of the linear copolymer of ethylene and a higher alkene.

4222913, Sep 16, 1980

Nov 16, 1978

5/961293

Barry A. Cooper - Wayzata MN

Bemis Company, Inc. - Minneapolis MN

C08L 2316

260 23AR

Improved stretch pallet wrap films are prepared from blend compositions comprising from approximately 79% to 98% by weight of a high molecular weight ethylene-vinyl acetate copolymer, from approximately 1% to 18% by weight of a polypropylene copolymer and from approximately 0. 3% to 5% by weight of a tackifier agent which may be a glycerol mono fatty acid, a sorbitan mono fatty acid, castor oil or expoxidized soya, with the ethylene-vinyl acetate copolymer having a vinyl acetate comonomer content of between approximately 8% and 20% and the polypropylene copolymer having a refractive index substantially similar to that of the ethylene-vinyl acetate copolymer. Such films exhibit improved properties for the stretch wrapping of palletized loads of boxes, bags and the like.

4436788, Mar 13, 1984

Dec 1, 1982

6/446055

Barry A. Cooper - Wayzata MN

Bemis Company, Inc. - Minneapolis MN

B32B 2706
C08L 2316

428483

A composition adapted for processing into stretch wrap film. The composition comprises between about 40 and about 90% by weight of a high molecular weight copolymer of ethylene and vinyl acetate containing between about 4 and about 25% by weight of repeating units derived from vinyl acetate and having a melt index of between about 0. 1 and about 4. The composition further comprises between about 8 and about 55% by weight of a linear copolymer of ethylene and a higher alkene. Such linear copolymer has a specific gravity of between about 0. 917 and about 0. 945. The invention further includes stretch wrap film, a method of producing stretch wrap film of differential cling properties, and a composite film constituted of a layer of the aforesaid ethylene vinyl acetate copolymer and a layer of the liner copolymer of ethylene and a higher alkene.