B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
B32B 27/08 (2006.01) B32B 27/28 (2006.01) B65D 65/40 (2006.01) C08L 23/08 (2006.01) C08L 23/20 (2006.01) C08L 31/02 (2006.01) C08L 33/02 (2006.01) C08L 33/06 (2006.01)
Patent
CA 2352692
A bag combination of: (a) a flexible, thermoplastic, biaxially stretched, heat shrinkable film bag having at least one blend layer comprising: 45 to 85 weight % of a first polymer (of 55 to 98°C m.p.) comprising a copolymer of ethylene and hexene-1 or octene-1; 5 to 35 weight % of a second ethylene .alpha.-olefin copolymer; (115 to 128°C m.p.); and 10 to 50 weight % of a third polymer (60 to 110°C m.p.) comprising an unmodified or anhydride-modified copolymer of ethylene and a vinyl ester, acrylic acid, methacrylic acid, or an alkyl acrylate; where the first and second polymers combined are >= 50 weight % based upon the three polymer blend; and the bag film has a total energy absorption >= 0.70 Joule and a shrinkage value at 90°C>= 50% (M.D. or T.D.); and (b) a bag laminate attached to at least one surface of the bag and covering >= 25% of the bag's surface the film comprising: to 20 weight % of (i) an ionomer; and 5 to 95 weight percent of (ii) a copolymer of ethylene and at least one C6 to C8 .alpha.-olefin, 55 to 95°C m.p. and Mw/Mn of 1.5 to 3.5); 0 to 90 weight % each of (iii) a copolymer of ethylene and at least one C4 to C8 .alpha.-olefin, (100 to 125°C m.p.); (iv) a copolymer of propylene and ethylene or butene-1 (105 to 145°C m.p.), and (v) a copolymer of ethylene and hexene-1, octene-1 and/or decene-1, (125 to 135°C m.p.); and polymers (ii), (iii), (iv), and (v) have a combined weight % of >= 80 weight % based upon the total weight of polymers (i), (ii), (iii), (iv), and (v); and the film and bag laminate has a total energy absorption of >= 1.2 Joule.
Georgelos Paul Nick
Tatarka Paul David
LandOfFree
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