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Patent Searching and Data


Title:
RAW MATERIAL FOR LAMINATED TUBE
Document Type and Number:
Japanese Patent JPH03176143
Kind Code:
A
Abstract:

PURPOSE: To obtain a raw material for a laminated tube equipped with proper rigidity and dead fold properties in spite of a transparent material using no metal foil or paper and having beautiful printing appearance by forming a multilayer laminated sheet wherein an outer surface layer is composed of a longitudinally uniaxially rolled multilayer film and an inner surface layer is composed of a polyethylene layer.

CONSTITUTION: A surface layer is composed of low density polyethylene or linear low density polyethylene 1. High density polyethylene 2 is pref. as an intermediate layer material because it imparts sufficient rigidity and dead fold properties to a tube but a polyester resin, a polyamide resin, a propylene resin or an ethylene/vinyl alcohol copolymer can be also used. As an ethylene/vinyl alcohol copolymer layer 5, a resin layer having good gas barrier properties composed of polyester, polyamide, polyacrylonitrile or polycarbonate and other arbitrary resin layer are provided between the outer surface layer 4 and an inner surface layer. This raw material for a laminated tube obtains dead fold properties necessary for the laminated tube from a longitudinally uniaxially rolled multilayer tube and a metal foil or paper damaging transparency is not used.


Inventors:
TOKUYAMA TSUTOMU
SUGIYAMA TAKUJI
Application Number:
JP31517689A
Publication Date:
July 31, 1991
Filing Date:
December 06, 1989
Export Citation:
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Assignee:
SUN A CHEMICAL IND
International Classes:
B65D35/08; B32B27/00; B32B27/28; B32B27/30; B32B27/32; (IPC1-7): B32B27/00; B32B27/28; B32B27/30; B32B27/32; B65D35/08
Attorney, Agent or Firm:
Isao Itai