Fast detecting method for sealing performance of closed flexible package bag

A technology for flexible packaging bags and sealing performance, which can be used in liquid tightness measurement using liquid/vacuum degree, testing fluid tightness by detecting the size change of the structural components to be tested, and measuring the increase and decrease rate of fluid, etc., which can solve the detection problem Low precision and efficiency, flexible packaging leakage and other problems, to achieve the effect of fast detection speed, simple operation method and accurate detection results

Inactive Publication Date: 2006-01-11
NANJING VOCATIONAL UNIV OF IND TECH
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Problems solved by technology

Regarding the leak detection of flexible packaging, there is no effective detection method at present. Generally, the appearance of the s

Method used

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Embodiment Construction

[0010] A method for quickly detecting the sealing performance of a closed flexible packaging bag according to the present invention. First, put a sample of the closed flexible packaging bag and the closed flexible packaging bag to be tested into a container, and seal the container lid; then inflate the container to the rated value of the packaging bag. Pressure and constant pressure for a period of time; finally quickly open the container sealing lid, observe the difference in volume change between the tested flexible packaging bag and the well-closed flexible packaging bag, and obtain the sealing performance of the tested flexible packaging bag. The difference in volume change between the tested flexible packaging bag and the closed flexible packaging bag sample during this process is compared through the container observation window. The volume change of the packaging bag sample can be 10%, which is the amount of difference that can be judged by normal human eyes. When the gas o...

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Abstract

The present invention discloses a sealability quick detection method of closed flexible package bag. Said method includes the following steps: placing the completely-closed flexible package bag sample and closed flexible package bag to be detected into a container, closing the container cover, air-inflating said container to reach the rated pressure of package bag and retaining the constant pressure for a certain time, finally quickly opening said sealing cover of container and observing the volume change of two package bags so as to obtain the sealability of the detected package bag.

Description

1. Technical Field [0001] The invention relates to a method for detecting the sealing performance of a container, in particular to a method for quickly detecting the sealing performance of a closed flexible packaging bag. 2. Background technology [0002] At present, the use of flexible packaging bags is becoming more and more common, and the requirements for the sealing performance of closed flexible packaging bags are getting higher and higher. Therefore, the detection of the sealing performance of closed flexible packaging bags is very important. Regarding the leakage detection of flexible packaging, there is currently no effective detection method. Generally, the appearance of the seal is observed by the naked eye. The disadvantage of this detection method is that the detection accuracy and efficiency are very low. Third, the content of the invention [0003] The purpose of the present invention is to provide a rapid detection method for the sealing performance of a closed f...

Claims

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Application Information

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IPC IPC(8): G01M3/26G01M3/36
Inventor 李海萍余程
Owner NANJING VOCATIONAL UNIV OF IND TECH
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