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Air permeability tester

A tester and air permeability technology, which is applied in the field of testers, can solve the problems of large space occupation, large equipment, and inability to detect samples with low air permeability, so as to achieve the effect of improving accuracy and reducing the influence of errors

Active Publication Date: 2015-06-17
GBPI PACKAGING TEST INSTR
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Problems solved by technology

[0004] The invention proposes an air permeability tester, which solves the problems of large tester equipment, large space occupation, low test efficiency, and narrow test range in the prior art, and overcomes the inability of the existing tester to detect high air permeability of sponges. sample detection, and can not detect the defects of low gas permeability samples

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Embodiment Construction

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0020] The air permeability tester of the present invention adopts the testing principle of Schober method (such as figure 1 As shown), the test sample is used to divide the experimental chamber into two independent systems. The upper chamber is open in the air, and the lower chamber is a stable air pressure (the lower chamber is the cavity body of the air permeability tester). The two sides of the test sample Under the action of pressure difference, measure the ai...

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Abstract

The invention provides an air permeability tester. The air permeability tester comprises an enclosure, wherein a cavity body is fixedly formed in the top of the enclosure; a first opening is formed in the upper part of the cavity body; the upper part of the first opening is used for placing test samples; a test sample fixing device is arranged at the upper end of the cavity body; a second opening is formed in the lower part of the cavity body and is connected with a pressure sensor; a third opening is formed in the cavity body and is in pipeline connection with one end of a cylinder; the other end of the cylinder is connected with a piston; the piston is connected with a piston linkage mechanism; the piston linkage mechanism is arranged on a driving lead screw in a sleeving manner; a transmission mechanism is also arranged on the driving lead screw in the sleeving manner; and the transmission mechanism is connected with the output end of a motor. The air permeability tester disclosed by the invention can rapidly, efficiently and accurately measure the air permeability of materials such as paper, paperboards, sponges and fabrics.

Description

technical field [0001] The invention relates to a tester, in particular to an air permeability tester. Background technique [0002] For materials with high air permeability such as plastic foam, leather, textiles, cardboard, paper, and porous ceramics, it is necessary to quantify the permeability of gases to these materials when used in some specific fields. For example, whether the air permeability of cigarette paper is properly selected can directly affect The appearance of cigarettes, the taste of cigarettes and the content of smoke components, and the control of the air permeability of textiles are the key factors that directly affect the wearing comfort of clothing. For the detection of gas permeability of such materials, we call it air permeability test, and the test requires a professional air permeability tester. The air permeability test methods of this kind of materials can be roughly divided into two types: measuring differential pressure at constant flow rate a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/08G01N7/10
Inventor 周学成
Owner GBPI PACKAGING TEST INSTR
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