Title:
LINER FOR CROWN CAP
Document Type and Number:
Japanese Patent JP2500560
Kind Code:
B2
Abstract:
PURPOSE: To improve the sealing properties, shelf stability and impact resistance by forming a liner for crown cap by in-shell molding with a plastic material which consists of a specified ethylene resin and a specified hydrogenated block copolymer elastomer.
CONSTITUTION: For a liner for crown cap, which seals the bottle mouth of a bottle containing a content with inner pressure such as carbonated beverage or beer, etc., a composition of which MI is 1-20g/min is prepared with 50-90wt.% ethylene resin consisting of a low density polyethylene of which the vinyl acetate content is 12wt.% or lower and/or an ethylene-vinyl acetate copolymer, and 50-10wt.% hydrogenated block copolymer elastomer consisting of a polymer block of which the major component is styrene, and a polymer block of which the major component is hydrogenated butadiene. By forming this composition by in-shell molding, a line for crown cap with superior sealing properties, shelf stability and impact resistance is obtained.
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Inventors:
KUROKAWA HIDENORI
HAYASHI HARUO
HAYASHI HARUO
Application Number:
JP35801191A
Publication Date:
May 29, 1996
Filing Date:
December 27, 1991
Export Citation:
Assignee:
ASAHI KASEI KOGYO KK
ASAHI BIIRU KK
ASAHI BIIRU KK
International Classes:
B65D53/06; B29C39/10; B29K23/00; B29L31/56; (IPC1-7): B29C39/10; B65D53/06
Attorney, Agent or Firm:
Nozaki