Title:
CONTAINER-SHAPE MOLDED OBJECT
Document Type and Number:
Japanese Patent JP3221918
Kind Code:
B2
Abstract:
PURPOSE: To reduce the area ratio of a resin part, to reduce the transmission amount of oxygen and to enhance shield effect by subjecting a sheet like lami nate obtained by providing a thermoplastic resin layer to metal foil having specific tensile strength to vacuum or pressure molding to form a bottom wall and a side wall and providing metal foil cracks to the side wall.
CONSTITUTION: A sheet like laminate obtained by providing a thermoplastic resin layer 3 composed of polypropylene or polyester on at least one surface of metal foil with tensile strength of 30N/15mm width or less composed of aluminum or copper is subjected to vacuum or pressure molding to form a bottom wall 2a and a side wall 3a. The metal foil of the molded object 1a thus obtained forms fine metal foil cracks 4 at least at the place of the side wall 3a. Herein, the thickness of the metal foil is pref. set to 20μm or less and that of the thermoplastic resin layer is pref. set to 50μm or more.
Inventors:
Toshihiko Nakano
Shoichi Makimoto
Hidenori Yasukawa
Shoichi Makimoto
Hidenori Yasukawa
Application Number:
JP12587892A
Publication Date:
October 22, 2001
Filing Date:
May 19, 1992
Export Citation:
Assignee:
Toyo Aluminum Co., Ltd.
International Classes:
B29C51/14; B32B1/02; B29C51/10; B32B15/08; B65D1/00; B65D1/28; B65D6/38; B29L22/00; (IPC1-7): B29C51/10; B29C51/14
Attorney, Agent or Firm:
Bunji Kamata (2 outside)