VAC VBS Gas Permeability Tester

Packaging Testing Equipment

VAC-VBS is based on the differential pressure method, and is professionally applicable to the determination of gas transmission rate of films, sheeting, high barrier materials and aluminum foils.

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Full Description

VAC-VBS is based on the differential pressure method, and is professionally applicable to the determination of gas transmission rate of films, sheeting, high barrier materials and aluminum foils.

Technical Specification

Specifications	Film Test
Test Range	0.1~100,000 cm 3 /m 2 · 24h · 0.1MPa (standard)
Number of Specimens	3
Vacuum Resolution	0.1 Pa
Vacuum Degree of Test Chamber	<20 Pa
Test Temperature	15°C~55°C (constant temperature controller is optional)
Accuracy	±0.1°C
Specimen Size	Φ80 mm
Test Area	28.27 cm 2
Test Gas	O 2 , N 2 and CO 2 (outside of supply scope)
Test Pressure	-0.1 MPa ~ +0.1 MPa (standard)
Gas Supply Pressure	0.4 MPa ~ 0.6 MPa
Port Size	Φ6 mm PU Tubing
Instrument Dimension	670 mm (L) x 490 mm (W) x 350 mm (H)
Power Supply	220VAC 50Hz / 120VAC 60Hz
Net Weight	57 kg

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.

Application

This test instrument is applicable to the determination of gas permeability of:

Basic Applications	· Films Including plastic films, plastic composite films, paper-plastic composite films, coextruded films, aluminized films, aluminum foils, aluminum foil composite films and many others
· Sheeting Including engineering plastics, rubber and building materials, e.g. PP, PVC, and PVDC
Extended Applications	· Various Gases Test the permeability of various types of gases, e.g. O 2 , CO 2 , N 2 , Air and He
· Inflammable, Explosive Gases Test the permeability of inflammable and explosive gases
· Biodegradable Films Test gas permeability of various sorts of biodegradable films, e.g. starch-based biodegradable bags
· Materials for Aerospace Usage This instrument can test the Helium permeability of airship gas bags
· Paper and Paper Board Test gas permeability of paper and paper-plastic composite materials, e.g. aluminized paper for cigarette packages, Tetra Pak sheeting, paper bowls for instant noodles and disposable paper cups
· Paint Films Test gas permeability of substrates coated paint films
· Glass Fiber Cloth and Paper Including glass fiber cloth and paper materials, e.g. Teflon paint cloth, Teflon welding cloth and Teflon silicon rubber cloth
· Soft Tube Materials for Cosmetics Including various types of cosmetic tubes, aluminum-plastic tubes and toothpaste tubes
· Rubber Sheeting Including various sorts of rubber sheeting, e.g. car tires

Features

The GTRs of various films for distinct gases are testable
Tests 3 equivalent specimens at one operation and exports test results in average value
Equipped with temperature control device (optional parts) to meet various test conditions
The instrument comes with two test modes: proportional mode and standard mode
The system is controlled by computer and test process is automatic
Reference film for fast calibration to ensure accurate and universal test data
Equipped with RS232 port for convenient data transfer
Supports LystemTM Lab Data Sharing System for uniform management of test results and test reports

Models

GTR Tester ( Differential Pressure Method ) Standard: ASTM D1434; ISO15105-1
	VAC-V1	VAC-V2	VAC-V3	VAC-VBS	G2/131	G2/132
Test Range (cm3/m2•day•0.1Mpa)	0.1-100,000	0.05-50,000	0.1-50,000(A Group) 0.01-1000 (B Group)	0.1-100,000	0.05-50,000	0.05-20,000
Number of Specimens	1	3	3 (A Group)+3 (B Group)	3	3	3
Testing Result	1	3	3 (A Group)+3 (B Group)	1(Average)	3	1
Vacuum Resolution(Pa)	0.1	0.1	Group A: 0.1 Pa Group B: 0.01 Pa	0.1	0.1	0.1
Vacuum Degree of Test Chamber	<20 Pa	<20 Pa	<20 Pa	<20 Pa	<20 Pa	<20 Pa
Temperature (?)	Room Tem.- 50±0.1	5 - 95±0.1	5 - 95±0.1	15-55±0.1	15-55±0.1	15-55±0.1
Humidity (RH)	N/A	0%, 2-98.5%, 100%	N/A		0%, 2-98.5%, 100% ±0.1%	0%, 2-98.5%, 100% ±0.1%
Specimen Size	φ97mm	φ97mm	φ97mm	φ80mm	φ97mm	φ97mm
Test Area	38.48cm2(φ70mm)	38.48cm2(φ70mm)	38.48cm2(φ70mm)	28.27 cm2(φ60mm)	38.48cm2(φ70mm)	38.48cm2(φ70mm)
Remark	VAC Series is independent testing cell, G2 Series is integrated testing cell ( 3 testing cell in one block)