Title:
EASILY RELEASABLE LAMINATED FILM
Document Type and Number:
Japanese Patent JPH01114429
Kind Code:
A
Abstract:
PURPOSE:To obtain the title film which can be imparted with a favorable air- permeability as required by a method wherein, at least one side of the surfaces of a synthetic resin film without penetrated hole to a synthetic resin film with perforations is processed by corona discharge and the two films are laminated together, while setting the bonding strength of the interface of the two films at 5-100g/20mm width. CONSTITUTION:A penetration-holed synthetic resin film 1 having a plurality of perforations 3 is faced to a synthetic resin film 2 without penetration hole. At least one surface facing each other is processed by corona discharge followed by the lamination of the two films. At that time, the bonding strength at the interface 4 of the films 1 and 2 is set at 5-100g/20mm width. By such a structure, a double layered film for packaging, which can be imparted with a favorable air-permeability as necessary, and easily releasable under a specific use condition, is obtained.
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Inventors:
KODAMA EIJI
NAGAMATSU MIKIHARU
TSUBATA SEIICHIRO
NAGAMATSU MIKIHARU
TSUBATA SEIICHIRO
Application Number:
JP27252887A
Publication Date:
May 08, 1989
Filing Date:
October 28, 1987
Export Citation:
Assignee:
MITSUBISHI PLASTICS IND
International Classes:
B32B3/24; B32B7/06; B32B27/00; (IPC1-7): B32B3/24; B32B7/06; B32B27/00
Attorney, Agent or Firm:
Kumi Kondo