Polyolefin type resin laminate

Details Polyolefin type resin laminate Polyolefin type resin laminate

B - Operations, Transporting

32

B

154/140

B32B 27/32 (2006.01)

Patent

CA 1313346

ABSTRACT The present invention is directed to a polyolefin type resin laminate that comprises a base layer made of a polyolefin type resin consisting mainly of butene-1 type polymer in which the content of other .alpha.-olefin unit of 15 mol % or below, the intrinsic viscosity [?] is 1.2 to 4.0 d?/g, the ratio Mw/Mn of the weight-average molecular weight [Mw] to the number-average molecular weight [Mn] is from 2 to 10, and the haze is 50 % or below, and layers each provided on each of the opposite surfaces of said base layer and made of a polyolefin type resin having a melt index [MI] of 0.1 to 30 g/10 min, the haze of each of the latter layers being up to that of said base layer, characterized in that the haze of said laminate is 3 % or below, the strain recovery rate is 90 % or over and the ratio of the tear strength in the M. D. to the tear strength in the T. D. is from 0.25 to 4.

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