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Labthink Instruments Co., Ltd.
Gas Permeation Testing Instrument for Plastic Films

Gas Permeation Testing Instrument for Plastic Films

Product catalog summary

Overview: The document provides detailed information about the VAC-V2 Gas Permeability Tester by Labthink Instruments Co., Ltd. This instrument is designed for measuring the gas transmission rate, solubility coefficient, diffusion coefficient, and permeability coefficient of various materials such as plastic films, composite films, and aluminum foils.

Professional Technology: The VAC-V2 allows for the testing of three distinct specimens simultaneously, offering independent results. It features precise temperature and humidity control, two test modes (proportional and standard), and can be customized for testing poisonous, inflammable, and explosive gases. The instrument is computer-controlled, ensuring automatic test processes and easy data transfer via an RS232 port. It supports the Lystem™ Lab Data Sharing System for efficient management of test results.

Test Principle: The instrument operates on the differential pressure method. A pre-conditioned specimen is placed in a gas diffusion cell, creating a sealed barrier between two chambers. Gas is introduced into the higher-pressure chamber, and its permeability through the specimen is measured by monitoring pressure changes in the lower chamber.

Standards Compliance: The VAC-V2 conforms to several international standards, including ISO 15105-1, ISO 2556, GB/T 1038-2000, ASTM D1434, JIS K7126-1, and YBB 00082003.

Applications: The instrument is applicable for testing the gas permeability of various materials, including films, sheeting, biodegradable films, aerospace materials, paper, paint films, glass fiber cloth, cosmetic tubes, and rubber sheeting. It can test gases like O2, CO2, N2, and air, as well as inflammable and explosive gases.

Technical Specifications: The VAC-V2 offers a test range of 0.05 to 50,000 cm³/m²·24h·0.1MPa, with an extended volume capability of at least 500,000 cm³/m²·24h·0.1MPa. It supports a temperature range of 5°C to 95°C with an accuracy of ±0.1°C, and a humidity range of 0%RH to 100%RH with an accuracy of ±1%RH. The instrument size is 760 mm x 575 mm x 450 mm, and it weighs 88 kg.

Configurations: The standard configuration includes the main body, professional software, a round sample cutter, vacuum grease, rapid quantitative filter paper, and an imported vacuum pump. Optional parts include blades for the sample cutter, vacuum grease, vacuum pump oil, and additional filter paper.

Note: The gas supply port requires Φ6 mm PU tubing, and customers must prepare their own gas supply.

Catalog excerpts

Gas Permeation Testing Instrument for Plastic Films-1

I PERME® VAC-V2 Gas Permeability Tester VAC-V2 is based on the differential pressure method, and is professionally applicable to the determination of gas transmission rate as well as solubility coefficient, diffusion coefficient and permeability coefficient of plastic films, composite films, high barrier materials, sheeting, and aluminum foils. Professional Technology • Gas transmission rate, solubility coefficient, diffusion coefficient and permeability coefficient of the specimen could be obtained at one operation • 3 distinct or equivalent specimens could be tested individually with independent test results at one operation • Wide range and high precision temperature and humidity control to meet various test conditions • The instrument comes with two test modes: proportional mode and standard mode • Test range could be extended based on user requirements to test the materials with high permeability • Test results could be easily obtained even at extreme conditions by data fitting function, which could fit any • The instrument could be used to test poisonous, inflammable, and explosive gases (customization required) • The instrument is controlled by a computer and test process is automatic • Reference film for fast calibration to ensure accurate and universal test data • Standard RS232 port for convenient data transfer • Support Lystem™ Lab Data Sharing System for uniform management of test results and test reports Test Principle The pre-conditioned specimen is mounted in the gas diffusion cell as to form a sealed barrier between two chambers. The lower-pressure chamber is firstly evacuated, followed by the evacuation of the entire cell. A flow of gas is thereafter introduced into the evacuated higher-pressure chamber and a constant pressure difference is generated between two chambers. The gas permeates through the specimen from the higher pressure side into the lower side. The gas permeability and other barrier properties of the specimen can be obtained by monitoring the pressure changes in the lower chamber. This test instrument conforms to the following standards: This test instrument is applicable to the determination of gas permeability of: Including plastic films, plastic composite films, paper-plastic Films composite films, geomembranes, coextruded films, aluminized films, aluminum foil, aluminum foil composite films, and many others Including engineering plastics, rubber, and building materials, e.g. PP, Extended Various Gases Test the permeability of various types of gases, e.g. 02, C02, N2, Air Labthink Instruments Co., Ltd.144 Wuyingshan Road, Jinan, P.R.China (250031) Phone: +86-531-85068566 FAX: +86-531-85812140

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Gas Permeation Testing Instrument for Plastic Films-2

Explosive Gases Test the permeability of various films to inflammable, explosive gases Test gas permeability of various sorts of biodegradable films, e.g. starch-based biodegradable bags Biodegradable Films Aerospace Usage This instrument can test the Helium permeability of airship gas bag Test gas permeability of paper and paper-plastic composite materials, e.g. aluminized paper, Tetra Pak sheeting, paper bowl for instant noodles and disposable paper cup Paint Films Test gas permeability of substrates coated with paint films Glass Fiber Cloth Including glass fiber cloth and paper materials,...

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Gas Permeation Testing Instrument for Plastic Films-3

Configurations Optional Parts Note Quantitative Filter Paper, and Vacuum Pump (Imported) Blades for Sample Cutter, Vacuum Grease, Vacuum Pump Oil, and Rapid Quantitative Filter Paper 1. The gas supply port of the instrument is Φ6 mm PU Tubing; 2. Customers will need to prepare for gas supply. Labthink Instruments Co., Ltd.144 Wuyingshan Road, Jinan, P.R.China (250031) Phone: +86-531-85068566 FAX: +86-531-85812140 w w w.labthinkinter n atio n al.co m.cn

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