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:
May. 31, 1994
Filed:
Apr. 16, 1992
Takashi Toyoda, Ibaraki, JP;
Yasuji Hosono, Ibaraki, JP;
Takashi Funato, Ibaraki, JP;
Takashi Miyaji, Ibaraki, JP;
Yukio Kohama, Kanagawa, JP;
Kazunori Yamada, Kanagawa, JP;
Toshiaki Watanabe, Kanagawa, JP;
Chiaki Kanai, Kanagawa, JP;
Oji Yuki Goseishi Co., Ltd., Tokyo, JP;
Tokai Aluminum Foil Co., Ltd., Yokohama, JP;
Abstract
A lid which is to be heat-sealed on a container, including a laminated sheet composed of a base layer, an adhesive layer, a metallic layer, and a heat-sealable resin layer, in which the base layer includes a single layer of a stretched resin film having many microvoids or a laminate containing at least the stretched resin film, the lid having an indication of the direction of stripping, including a lug provided at the periphery thereof or a print thereon, in such a manner that the indicated direction of stripping should be set within a range of .+-.45.degree. with respect to the direction of greatest thermal expansion coefficient of the base layer when heated from 30.degree. C. up to 80.degree. C. at a rate of temperature rise of 10.degree. C./min for 5 minutes. When hot water is poured into a container with the lid partly stripped, the lid is heated by the steam to close the container without assistance.