B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/1043, 154/106
B29C 55/02 (2006.01) B32B 27/08 (2006.01)
Patent
CA 1291311
ABSTRACT The present invention provides a low temperature heat shrinkable film comprising a linear low density polyethylene resin having a short branched chain and a density of 0.935 g/cm3, and whose film properties are such that the haze value is 5% or less, the heat shrinkages at 90°C in the M and T directions are 30% or more and 5% or less, respectively , and the shrinkage stress at 90°C in the M direction is 300 g/mm2 or more. This transparent film having an excellent low temperature heat shrinkability can be produced by drawing a film of the above-mentioned polyethylene resin between two rolls having a diameter of 200 mm or less at an air gap of 10 mm or less at a draw ratio of 3.0 to 6Ø Further, an inflation film having a multilayer structure can be obtained by press bonding or press bonding and drawing a plurality of films comprising the above-mentioned polyethylene resin. This laminate film has an excellent transparency and strength, and has a uniform film thickness.
497776
Ohkubo Takuo
Shishido Kihachi
Taka Toshio
Malcolm Johnston & Associates
Showa Denko Kabushiki Kaisha
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