Laminate and production process thereof

Details Laminate and production process thereof Laminate and production process thereof

1997-03-10

1999-04-27

Warzel, Mark L.

Stock material or miscellaneous articles

Composite

Of carbohydrate

428 354, 428 366, 428 367, 428500, 428507, 428508, 428509, 428515, 428518, 524 27, 524 47, 524 52, 524 56, 524 58, 525 542, 525 5426, 4273722, 4273741, 427384, 4273935, B32B 2308

Patent

active

058979603

ABSTRACT:
A laminate having a laminated structure of at least two layers includes a gas barrier film (A) formed from a mixture containing at least one poly(meth)acrylic acid polymer selected from the group consisting of poly(meth)acrylic acid and partially neutralized products thereof and a saccharide in a weight ratio of 95:5 to 20:80, and having an oxygen permeability constant of 5.00.times.10.sup.-3 ml(STP).multidot.cm/m.sup.2 .multidot.h.multidot.atm{Pa} or smaller as measured under conditions of 30.degree. C. and 80% relative humidity, and a layer (B) formed from a thermoplastic resin. The film (A) and the layer (B) are laminated contiguously to each other. A process for the production of a laminate having a laminated structure of at least two layers comprises a step of forming a gas barrier film (A) having an oxygen permeability constant of 5.00.times.10.sup.-3 ml(STP).multidot.cm/m.sup.2 .multidot.h.multidot.atm{Pa} or smaller as measured under conditions of 30.degree. C. and 80% RH, wherein a solution containing at least one poly(meth)acrylic acid polymer selected from the group consisting of poly(meth)acrylic acid and partially neutralized products thereof and a saccharide in a weight ratio of 95:5 to 20:80 is coated on a layer (B) formed from a thermoplastic resin, the solution coated is dried to form a film, and the film is then subjected to a heat treatment at a temperature of at least 100.degree. C. (373K). The film (A) and the layer (B) are contiguous to each other.

REFERENCES:
patent: 2169250 (1939-08-01), Izard
patent: 4529654 (1985-07-01), Drum
patent: 4919984 (1990-04-01), Maruhashi et al.
patent: 5153038 (1992-10-01), Koyama et al.
patent: 5498662 (1996-03-01), Tanaka et al.
Derwent Abstract, EP0 121 179.
Testing Methods for Transition Temperatures of Plastics, Japanese Industrial Standard, JIS K 7121, 1987.
Testing Methods for Vicat Softening Temperature of Thermoplastics, Japanese Industrial Standard, JIS K 7206, 1991.

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