The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 10, 1997
Filed:
May. 09, 1995
Hiroshi Sato, Tokyo, JP;
Ryota Ogawa, Tokyo, JP;
Toppan Printing Co., Ltd., Tokyo, JP;
Abstract
An improved inner sealing material, which is fitted in a cap of a container has basically a membrane layer having at least a metal layer and a reseal layer having at least an elastic sheet layer, with said membrane and reseal layers being superposed in such a way that one can be separated from the other. The topmost part of the membrane layer is formed of a release layer that is made of a mixture of an acrylic resin and a chlorinated vinyl acetate base resin and which is overlaid with an adhesive layer made of a chlorinated polypropylene base resin whereas the bottommost part of the reseal layer has a polypropylene base resin layer. The inner sealing material can be subjected to high-frequency sealing without losing the inherent capability of assuring smooth separation between the membrane and reseal layers.