Title:
POLYOLEFIN HEAT-SHRINKABLE LAMINATED TUBE
Document Type and Number:
Japanese Patent JP3747151
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a polyolefin heat-shrinkable laminated tube showing good stretchability, coat workability, pliability, shrink finishing properties, heat resistance and the like.
SOLUTION: This polyolefin heat-shrinkable laminated tube comprises at least two layers such as a layer (A) which forms an innermost layer and a layer (B) which forms an outermost layer. The layer (A) as the innermost layer is composed mainly of 50-60 wt.% of a component (a) given below and 50-40 wt.% of a component (b) given below. On the other hand, the layer (B) is formed of a mixed resin layer composed mainly of 35-50 wt.% of the component (a) and 65-50 wt.% of the component (b). In addition, the tube is obtained by stretching a laminate with the layer (B) whose thickness is 50-98% of the thickness of the total layer. The component (a) is cyclic olefin polymer with 50-90°C glass transition temperature (Tg) and the component (b) is polypropylene polymer having 10-5-J/g quantity of heat for crystallization as measured by a differential scanning calorimeter(DSC) and 125°C or higher crystalline melting peak temperature (Tm).
Inventors:
Yoshirei Fujitani
Koichiro Taniguchi
Koichiro Taniguchi
Application Number:
JP2000242642A
Publication Date:
February 22, 2006
Filing Date:
August 10, 2000
Export Citation:
Assignee:
Mitsubishi Plastics Co., Ltd.
International Classes:
B32B1/08; B32B27/00; B29C61/08; C08L23/10; C08L45/00; C08L65/00; (IPC1-7): B32B1/08; B29C61/08; C08L23/10; C08L45/00; C08L65/00; //B29K23:00; B29L23:00
Domestic Patent References:
| JP2000159946A | ||||
| JP200015750A | ||||
| JP2000143829A | ||||
| JP2001162725A | ||||
| JP2001310952A |