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:
Dec. 13, 2016
Filed:
Nov. 21, 2011
Yoshifumi Koyanagi, Kashiwara, JP;
Yoshifumi Koyanagi, Kashiwara, JP;
KASHIWARA SEITAI CO., LTD., Kashiwara-Shi, JP;
Abstract
To provide a valve structure in which a valve sheet is not fused to outer sheets when heat-sealing to a sealed bag. The left and right sides of three valve constituting sheets are side-sealed, and opposed valve constituting sheets are brought into close contact with each other to restrict a fluid from moving. The inside and outside of a bag body are partitioned by a partition seal, the valve is disposed across the inside and outside of the bag body, and welded to the bag body by the partition seal. One of the opposed surfaces of the valve constituting sheets is formed of a non-weldable film that is not welded by welding of the side seals and the partition seal. The side seals become non-welded portions and side-entering preventive sealed portions that block flows of the fluid into the movement channel are provided continuously to the partition seal.