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:
Nov. 10, 2009
Filed:
Sep. 28, 2005
Mitsuo Furusawa, Ibaraki, JP;
Eiji Gotou, Buzenn, JP;
Masaru Ono, Buzenn, JP;
Tsugio Arai, Ibaraki, JP;
Mitsuo Furusawa, Ibaraki, JP;
Eiji Gotou, Buzenn, JP;
Masaru Ono, Buzenn, JP;
Tsugio Arai, Ibaraki, JP;
Yoshino Kogyosho Co., Ltd., Tokyo, JP;
Abstract
The invention is aimed at preventing bottom crack from occurring in a peelably laminated plastic container and maintaining the container stably in good in-use condition. This can be achieved by increasing the anti-peeling strength of a pair of rib strips, with which the bottom rib is formed, in the bottom seal that has been obtained by pinching off the parison at the bottom and molding the parison into a blow molded, peelably laminated plastic container. The bottom sealof a blow molded, peelably laminated containeris reinforced by a pair of rib stripswhich are pressed to each other to form the bottom rib. A multiple number of cavitiesare formed in the bottom ribin such a way that the rib stripon one side is pushed toward, and caved into, the rib strip on the other side at several points, and vice verse. An expanded portionis formed in the ceiling of each cavity. As a result, an undercut engagement portionis formed along the contact faces of both rib stripsso that anti-cracking bottom strength of the bottom seal is enhanced.