Heat-adhesive film laminate

Details Heat-adhesive film laminate Heat-adhesive film laminate

B - Operations, Transporting

32

B

154/126.4

B32B 15/08 (2006.01) C08J 5/12 (2006.01) C09J 7/02 (2006.01)

Patent

CA 1039171

Abstract of the Disclosure A heat-adhesive film laminate comprising a film of a plastic material having excellent heat resistance, such as a polyester, polyamide or polycarbonate, laminated on one side of a metal foil such as aluminum foil, copper foil or iron foil, and a film of a resin laminated on other side of the metal foil, the resin predominantly comprising a block copolymer having a melting point above 140°C but lower than the temperature at which the characteristics of the plastic film deteriorate and having a Young's modulus .epsilon. (dyne/cm2) and a breaking elongation (.DELTA.i/1.0) X 100 (%) when measured at 20°C and 100°C which satisfy the following relationships: 107 (dyne/cm2) < c < 1010 (dyne/cm2) and (.DELTA.?/?0) X 100 > 40 (%). The laminate has superior heat resistance and heat seal strength as compared with known materials and is useful in the packaging of foods requiring preservation for long periods of time.

191606

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