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:
Sep. 06, 2011
Filed:
Jan. 26, 2007
Kenichi Tanaka, Sodegaura, JP;
Ryo Katada, Sodegaura, JP;
Kenichi Tanaka, Sodegaura, JP;
Ryo Katada, Sodegaura, JP;
Idemitsu Unitech Co., Ltd., Tokyo, JP;
Abstract
A zipper tape includes a pair of a male member and a female member including engagement portions and belt-like bases, continued to the engagement portions. The belt-like base includes a seal base defined by widening the belt-like base a larger width from the engagement portions to a crosswise end of the belt-like base than that of the belt-like base. A bond layer and an easy-peel layer are layered on a surface of the seal base in side of the engagement portion and heat-fused to a bag body. The seal base is formed of polypropylene. The bond layer is formed of a mixture of polypropylene and low density polyethylene. The easy-peel layer is formed of a mixture of low density polyethylene and polypropylene. A ratio of polypropylene in the easy-peel layer is smaller than a ratio of polypropylene in the bond layer.