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Novel testing system for testing air permeability of micro air-permeable film

A test system, micro-breathable membrane technology, applied in the direction of measurement devices, permeability/surface area analysis, suspension and porous material analysis, etc.

Active Publication Date: 2012-11-28
SURYAMAS DAILY CHEM TIANJIN
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Problems solved by technology

Therefore, there are no suitable methods and testing instruments in China to test it

Method used

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  • Novel testing system for testing air permeability of micro air-permeable film

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Embodiment Construction

[0032] As shown in the figure, a new type of test system for the air permeability test of micro-breathable membranes. The instrument consists of three parts: a constant pressure system, a test chamber, and a flow recording system. The constant pressure system has a constant pressure chamber, and the constant pressure chamber is connected to a vacuum pump. , the constant pressure chamber is connected to the vacuum pressure gauge and the air flow meter, and the output pipe of the constant pressure chamber is connected to the gas pipe of the upper test chamber through the two-way stop valve A, and the gas pipe of the lower test chamber is connected to one end of the three-way stop valve D, and the three-way stop valve The other end of valve D is connected to the first port of the organic vapor drying chamber, the other port of the organic vapor drying chamber is connected to the first port of the water vapor drying chamber, the other port of the water vapor drying chamber is connec...

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Abstract

The invention relates to a novel testing system for testing the air permeability of a micro air-permeable film. The system can test the differential pressure air permeability of an air-permeable film of a warming bag, an air-permeable film of a moisture absorber, an air-permeable film of a refrigerator deodorant and other various composite-material air-permeable films and single-layer air-permeable films. The scope of the air permeability of a sample tested by the novel testing system is between a fiber textile (high air permeability) and a plastic film (low air permeability). The novel testing system comprises a constant pressure system, a testing chamber and a flow recording system. The scope of tested differential pressure ranges from 10 Pa to 100 000 Pa and is adjustable. The area of the sample to be tested ranges from 1cm2 to 500cm2 and is adjustable. The time for testing the air permeability ranges from 1 min to 300 min and is adjustable. According to test requirements, test results can be set in different measurement units such as s / cc, L / s, s / cc / m2, L / s / m2, L / m2 / Pa, L / m2 / Pa / s and mm / s, and all the units can be converted.

Description

technical field [0001] The invention belongs to a novel experimental test system, and relates to a novel test system for testing the air permeability of a micro-permeable membrane. Background technique [0002] In recent years, with the improvement of people's living standards, some new products have gradually appeared in the daily necessities industry, such as: warm bags, calcium chloride, silica gel household dehumidifiers, activated carbon, and molecular sieve refrigerator deodorants. The high-end products in these product series are all A micro-breathable membrane is used. The air permeability of this type of breathable film is between that of fiber fabrics (high air permeability) and plastic film (low air permeability). The air permeability of this kind of samples is tested by non-woven fabric air permeability meter or packaging roll film air permeability meter. Measure the lower limit and upper limit. Therefore, there are no suitable methods and testing instruments i...

Claims

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Application Information

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IPC IPC(8): G01N15/08
Inventor 闫菁嵩
Owner SURYAMAS DAILY CHEM TIANJIN
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