Package Barrier Property Tester uses electrochemistry principle.
Press Release Summary:
Used to perform packaging water vapor permeability test, TSY-W3 adopts electrochemistry principle and possesses double function of film and package tester. With this instrument, oxygen permeability of connecting place can also be tested. This provides efficient test method for understanding package barrier properties.
Original Press Release:
Latest Developments Realize Package Barrier Property Test
The special shape of package makes barrier property tests present specific characteristics. Comparing with film, test methods of container package develop more slowly. In the past, gas permeance and water permeance of package are estimated by testing the sheet material of the package. However, container package wall is not uniform in thickness and the nature of material will change in the process of production, which will cause certain disparity existing between estimated and actual gas permeance of the package.
Labthink is the first domestic manufacturer that sets foot in barrier property test. It develops the first domestic package/film oxygen permeability tester in 2004. Based on electrochemistry principle and double function of film test and package test, this instrument meets the requirements of ASTM F 1307 and ASTM D 3985. This year, Labthink introduces the TSY-W3 for water vapor permeability test of package, which also adopts electrochemistry principle and possesses double function of film test and package test.
Test principle of package gas permeability test is similar to that of film gas permeability test of equal-pressure method. Here we will take oxygen permeability test of package as an example. First, use the package to divide the permeation chamber into two independent airflow systems with one side as the flowing testing gas (pure oxygen or mixed gas of oxygen) and the other side flowing dry nitrogen gas. Pressures of the two sides are equal but oxygen partial pressure is different. Under the function of oxygen concentration difference, oxygen transmits through the film and diverts into the sensor by nitrogen carrier gas. Oxygen gas transmission rate (O2GTR)of the package can be calculated according to the oxygen quantity that is accurately measured by the sensor in nitrogen carrier gas.
With this instrument, oxygen permeability of the connecting place can also be test, which provides an efficient test method for the understanding of package barrier property. The difference between oxygen permeability test of the connecting place and the pure package oxygen permeability test mainly lies in the preparation of specimen.
Labthink International, Inc.
200 River’s Edge Drive
Medford, Massachusetts, 02155, U.S.A.
Phone: +1-617-830-2190
FAX: +1-781-219-3638
Email: info@labthinkinternational.com
Labthink Instruments Co., Ltd.
144 Wuyingshan Road
Jinan, P.R.China
Phone: +86-531-85068566
FAX: +86-531-85812140
Email: trade.en@labthink.cn
