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Testing apparatus for testing air permeability of high barrier film

A high-barrier, testing device technology, used in analytical materials, instruments, etc.

Inactive Publication Date: 2011-11-23
GBPI PACKAGING TEST INSTR +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is also an indirect test method to calculate the gas permeability of the test gas by testing the gas permeability of isotopes with different mass numbers from the measured gas but with the same chemical properties, but special isotope test gases are required

Method used

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  • Testing apparatus for testing air permeability of high barrier film
  • Testing apparatus for testing air permeability of high barrier film
  • Testing apparatus for testing air permeability of high barrier film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] Attached below figure 1 Embodiments of the present invention are described in detail.

[0018] According to actual usage conditions, first determine the shape and volume of the test container test gas chamber 8 and test chamber 10, the inner layer sealed chamber 1, the auxiliary sealed chamber 4 and the high pressure chamber 6, the inner layer sealed chamber wall 3 and the auxiliary sealed chamber The wall width of the chamber wall 5 .

[0019] Connect one end of the pipeline 17 with the pressure sensor 23 , the high pressure chamber needle valve 22 and the gas source valve 19 in sequence with the high pressure chamber 6 , and communicate with the other end with the experimental gas instrument 20 . Connect one end of the line pipe 17 with the pressure sensor 11 and the needle valves 12 and 13 of the two serially connected low-pressure chambers to the inner sealed chamber 1, and the other end to communicate with the vacuum pump 16, and connect the two serially connected...

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Abstract

The invention discloses a testing apparatus for testing the air permeability of a high barrier film. A low-pressure chamber of the testing apparatus is in a double-layered sealed structure formed by two sealing layers of an inner sealing chamber and an auxiliary sealing chamber. Two low-pressure chamber needles are connected in series in a pipeline, wherein the inner sealing chamber communicates with a vacuuming apparatus through the pipeline. A pipeline communicating with the auxiliary chamber is connected with the communicating pipeline between the two low-pressure chamber needles. A gas source valve and an isolating valve are insulated from a communicating pipeline between neighboring high-pressure needles by using a heat insulation material. The isolating valve and an emptying valve are insulated from a communicating pipeline between neighboring low-pressure needles by using a heat insulation material. A testing container and a heat insulation pipeline communicating with the testing container are placed in a heat insulation shield.

Description

technical field [0001] The invention relates to a test device for testing the air permeability of high barrier films. Background technique [0002] At present, the method based on the differential pressure method is one of the main methods for testing the gas permeability of films. The international standards for testing the gas permeability of films based on the differential pressure method include ASTM D1434, ISO 15105-1, ISO 2556-2001, and JIS K7126. The standard is GB / T 1038-2000. Different research institutions have developed different types of film air permeability testers according to different standards. [0003] However, these test devices are similar in that the test vessel consists of a test gas chamber and a test chamber. The test gas chamber is equipped with a high-pressure chamber, and the test chamber is equipped with a low-pressure chamber with a single-layer sealed structure. The high-pressure chamber introduces gas at an atmospheric pressure, and the low-...

Claims

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Application Information

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IPC IPC(8): G01N7/10
Inventor 刘孝锋汪仁煌周学成李学聪刘洪江
Owner GBPI PACKAGING TEST INSTR
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