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:
Jan. 27, 2009
Filed:
Sep. 25, 2003
Shigeyuki Oshima, Chiyoda-ku, JP;
Yoshiji Moteki, Chiyoda-ku, JP;
Shigeyuki Oshima, Chiyoda-ku, JP;
Yoshiji Moteki, Chiyoda-ku, JP;
Hosokawa Yoko Co., Ltd., Tokyo, JP;
Abstract
A packaging bag is formed by bending a laminate film at two portions in parallel to each other such that both end portions thereof are mated to each other and the mated end portions are bonded together so as to provide a tubular body having upper and lower openings, which are sealed by forming upper and lower seal portions, respectively. In such packaging bag, the two bent portionsandof the laminate film constitute side edge portions as boundary portions between a front surface portionand a back surface portionof a packaging bag, the upper seal portionis formed with a rough surface seal open portionformed with aggregation of a plurality of fine recesses formed to an outer layer constituting the laminate film and a plurality of fine through holes penetrating the outer layer so that the rough surface seal open portion is formed to the front surface and/or back surface portion of the packaging bag so as to include one of the side edge portions thereof, and the rough surface seal open portionis formed in the upper seal portionsuch that a lower end of the rough surface seal open portion is apart upward from a lower end of the upper seal portion