ISO 7231:2023

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Publicado (Edición 3, 2023)

ISO 7231:2023

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Resumen

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.

Informaciones generales

Estado
: Publicado

Fecha de publicación
: 2023-08

Etapa
: Norma Internacional publicada [60.60]
Edición
: 3

Número de páginas
: 14
Comité Técnico :
ISO/TC 45/SC 4

ICS :
83.100
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