Title:
POLYOLEFIN MULTILAYER THERMALLY SHRINKABLE FILM
Document Type and Number:
Japanese Patent JP3850545
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a polyolefin multilayer thermally shrinkable film which shows outstanding tear resistance and also shows no deteriorated transparent glossiness, even when a large amount of film scrap is reused.
SOLUTION: This polyolefin multilayer thermally shrinkable film is a three or more-tier multilayer film made of a resin composition composed of (A) 0-40 wt.% of a propylene copolymer with a melt point of 135-150°C which forms both surface layers and (B) an 100-60 wt.% of an ethylene copolymer with a main chain having a long-chain branch, with a density of 0.900-0.925 g/cm3 and MFR of 0.1-10 g/10 min. which is manufactured using a single site, catalyst and forms an intermediate layer. The thickness of the intermediate layer accounts for 50% or more of the total thickness of the film and the thickness of the both surface layers is each 1 μm or more. In addition, the layers are stretched by a factor of 3.0 or more in the longitudinal and the crosswise direction.
Inventors:
Kobayashi Masami
Shuichi Morita
Fumio Hotta
Toshikatsu Oyama
Shuichi Morita
Fumio Hotta
Toshikatsu Oyama
Application Number:
JP7125598A
Publication Date:
November 29, 2006
Filing Date:
March 06, 1998
Export Citation:
Assignee:
Kojin Co., Ltd.
International Classes:
B32B27/32; B29C61/06; B32B7/02; (IPC1-7): B32B27/32; B32B7/02; B32B7/02; //B29C61/06; B29K23:00; B29K105:02; B29L9:00
Domestic Patent References:
| JP8099393A | ||||
| JP1253445A | ||||
| JP10278195A |
Previous Patent: MOTOR CURRENT CONTROLLER FOR ELECTRIC DRIVE UNIT IN VEHICLE
Next Patent: CONTINUOUS PREPARATION OF POLYACETAL RESIN
Next Patent: CONTINUOUS PREPARATION OF POLYACETAL RESIN