Fast testing method for sealing performance of the

2022-08-21
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Fast detection method of sealing performance of closed flexible packaging bags

patent name fast detection method of sealing performance of closed flexible packaging bags patent applicant Nanjing Institute of industry and technology main applicant address 210016 Nanjing Zhongshan East Road inventor Li Haiping; Yu Cheng application (patent) No 8 application date 2005.07.22 date of issuance approval Announcement No. approval announcement date 2006.01.11 instruction CD No. d0602 packaging materials are mostly primary products-1 main classification No. g01m3/26 (2006.01) I classification No. g01m3/26 (2006.01) I; G01m3/36 (2006.01) I Division original application No. priority abstract the invention discloses a rapid detection method for the sealing performance of closed flexible packaging bags. First, the samples of intact flexible packaging bags and the closed flexible packaging bags to be tested, which were opened in Guangzhou from May 20 to 23, 2015, are put into containers, and the container covers are sealed; Then inflate the container to the rated pressure of the packaging bag and keep the pressure constant for a period of time; Finally, quickly open the container sealing cover, observe the volume change difference between the tested soft packaging bag and the well sealed soft packaging bag, and get the sealing performance of the soft packaging bag to be tested. The invention can synchronously pressurize and depressurize the samples of the well closed flexible packaging bags and the outside of a plurality of closed flexible packaging bags to be tested at the same time, so as to obtain the sealing degree of each flexible packaging bag to be tested. Compared with the prior art, the invention has the advantages of simple operation method, fast detection speed and accurate detection result. It is especially suitable for rapid detection of the sealing performance of multiple flexible packaging bags at the same time, and has great practical value. Claim 1. A rapid detection method for the sealing performance of closed flexible packaging bags, which is characterized in that it includes the following steps: a) place the sample of the flexible packaging bag and the closed flexible packaging bag to be tested together in a container and cover it for sealing; B) Inflate the closed container, pressurize it to the rated pressure of the package to be tested and keep it constant; C) Quickly open the container sealing cover, observe the volume change difference between the tested soft packaging bag and the well sealed soft packaging bag, and get the sealing performance of the soft packaging bag to be tested

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