| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a polyethylene lamination film which has all of high transparency, high glossiness, high blocking resistance, strong stiffness and excellent clean characteristics. <P>SOLUTION: The polyethylene lamination film has at least three layers and satisfies the following conditions: (1) both surface layers are made of polyethylene resin composition having a density of 935 to 968 kg/m<SP>3</SP>; (2) any of inner layer in direct contact with the surface layer is made of polyethylene resin composition having a density of 937 to 970 kg/m<SP>3</SP>; (3) a density of the polyethylene resin composition constituting the inner layer in direct contact with the surface layer is higher than the density of the polyethylene resin composition constituting the surface layer by 2 kg/m<SP>3</SP>or more; (4) the MFR of the polyethylene resin composition constituting the inner layer in direct contact with the surface layer is lower than the MFR of the polyethylene resin composition constituting the surface layer by 0.2 g/10 min or more; and (5) the extraction rate of normal heptane is 2 wt.% or less. <P>COPYRIGHT: (C)2011,JPO&INPIT |
