Standard

BS EN ISO 7231:2023

Polymeric materials, cellular, flexible. Determination of air flow value at constant pressure-drop

Current

•

Published:

31 Aug 2023

1 Scope

This document specifies two methods for determining the air flow value of flexible cellular polymeric materials:

— method A, for conventional types of flexible cellular polymeric material;
— method B, for all types of flexible cellular polymeric material, but especially for materials with a low permeability to air.

For method B, two methods are specified in this document:

— method B1: with manual measurement;
— method B2: with automatic measurement.

NOTE 1 Air flow values can be used to give an indication of the effects of formulation and production variables on the cellular structure.

NOTE 2 In this document, the expression “conventional type of flexible cellular polymeric material” means types which are unsuitable for sealing purposes.

BSI recommends this version of standard for organisations operating in or with the UK. The ISO edition is available here if required.

Product Details

Descriptors

Rubber

Flexible materials

Gas flow

Test specimens

Reports

Polymers

Test equipment

Testing conditions

Cellular materials

Air

Flow measurement

Plastics

ICS Codes

83.100 Cellular materials

Committee

PRI/70

International relationships

Identical to:

EN ISO 7231

ISO 7231

ISBN

978 0 539 17080 1

Publisher

BSI