ISO 7229:2022
Rubber- or plastics-coated fabrics — Measurement of gas permeability
This document specifies two methods for measuring gas transmission through rubber- or plastics-coated fabrics, a property known as permeability.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Test pieces
5.1 Shape and dimensions
5.2 Measurement of thickness
5.3 Number of test pieces
5.4 Sealing and masking
5.5 Conditioning
5.6 Test atmosphere
5.7 Gas transmission area
6 Pressure sensor method
6.1 Apparatus
6.2 Test gas
6.3 Procedure
6.4 Calculation and expression of results
6.4.1 Gas transmission rate
6.4.2 Gas permeability coefficient
7 Gas chromatography method
7.1 Apparatus
7.2 Test gas
7.3 Carrier gas
7.4 Calibration curve
7.5 Procedure
7.6 Calculation and expression of results
7.6.1 Gas transmission rate
7.6.2 Gas permeability coefficient
8 Test report
Annex A (informative) Gas chromatography method with equal pressure condition
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Related Information
Similar Standards
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BS 3408:1992
Specification for tarpaulins
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BS 3424-0:2000
Testing coated fabrics, Index of parts
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BS 3424-10:1987
Testing coated fabrics, Methods 12A and 12B Determination of surface drag
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BS 3424-12:1996
Testing coated fabrics, Accelerated ageing tests
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Test pieces
5.1 Shape and dimensions
5.2 Measurement of thickness
5.3 Number of test pieces
5.4 Sealing and masking
5.5 Conditioning
5.6 Test atmosphere
5.7 Gas transmission area
6 Pressure sensor method
6.1 Apparatus
6.2 Test gas
6.3 Procedure
6.4 Calculation and expression of results
6.4.1 Gas transmission rate
6.4.2 Gas permeability coefficient
7 Gas chromatography method
7.1 Apparatus
7.2 Test gas
7.3 Carrier gas
7.4 Calibration curve
7.5 Procedure
7.6 Calculation and expression of results
7.6.1 Gas transmission rate
7.6.2 Gas permeability coefficient
8 Test report
Annex A (informative) Gas chromatography method with equal pressure condition