nsBAS EN ISO 7231:2024
Polymeric materials, cellular, flexible - Determination of air flow value at constant pressure-drop
General information
Status:Project
Number of pages:21
Adoption method:Proglašavanje
Language:engleski
Edition:2.
Realization date:21.03.2024
Forseen date for next stage code:20.05.2024
Technical committee:BAS/TC 50, Packaging, plastics and rubber
ICS:
83.100, Cellular materials
Abstract
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.
Lifecycle
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Original document and degree of correspondence
EN ISO 7231:2023, identical
ISO 7231:2023, identical
Relation to BAS standards
Work material
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