Title:
STRETCH-PACKING FILM
Document Type and Number:
Japanese Patent JP3541603
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To realize the improvement of the self-bonding properties, thrusting resistance and impact resistance of a film by a method wherein an ethylene-vinyl acetate copolymer containing a specified amount of polybutene and an enthylene-α-olefin copolymer having predetermined characteristics are laminated to each other.
SOLUTION: An ethylene-vinyl acetate copolymer as the component of a first layer contains 3-10wt.% of polybutene. An ethylene-α-olefin copolymer as a second layer has a density of 0.880-0.960g/cm3, a melt flow rate at 190°C under the load of 2.16kg of 0.01-200g/10min and a melt flow rate ratio between the melt flow rate at 190°C under the load of 2.16kg and that at 190°C under the load of 21.6kg of 10-20, a molecular weight distribution of 2.0-4.0 and the standard deviation of elution amount to elution temperature obtained by TREF is 17 or less. Thus, an optimum self-bonding properties, thrusting resistance and impact resistance are obtained.
Inventors:
Koji Ichimura
Ryoichi Shimizu
Koji Nagano
Ryoichi Shimizu
Koji Nagano
Application Number:
JP4064997A
Publication Date:
July 14, 2004
Filing Date:
February 25, 1997
Export Citation:
Assignee:
Ube Industries,Ltd.
International Classes:
B65D71/06; B32B27/28; B32B27/32; (IPC1-7): B32B27/28; B32B27/32
Domestic Patent References:
| JP5169599A | ||||
| JP8276550A | ||||
| JP8216352A | ||||
| JP7026080A | ||||
| JP7026079A |