Patents Assigned to Mitsbushi Kasei Corporation
  • Patent number: 5266387
    Abstract: A wrapping film comprising at least an outer layer, an interlayer, and an inner layer in this order, (a) the wrapping film having a shear peel strength of 0.20 kg/cm.sup.2 or more and a 180.degree. peel strength of 8.0 g/50 mm or less, (b) the outer layer and the inner layer each being a polyolefin resin composition layer, (c) the interlayer being an aliphatic polyamide resin layer, (d) the wrapping film exhibiting a tensile elongation at break of 200% or less in the direction of film withdrawal and a tensile elongation at break of 80% or more in the direction perpendicular to the direction of film withdrawal, (e) the ratio of the tensile elongation at break in the direction of film withdrawal to that in the direction perpendicular to the direction of film withdrawal being in the range of 0.7 or less, and (f) the total thickness of the wrapping film being in the range of 40 .mu.m or less, and the thickness of the interlayer is in the range of 10 to 90% of the total thickness of the wrapping film.
    Type: Grant
    Filed: November 25, 1991
    Date of Patent: November 30, 1993
    Assignee: Mitsbushi Kasei Corporation
    Inventors: Toshio Fujii, Toyomitsu Kondo