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NF EN ISO 7231, T56-113 (08/2023)
Matériaux polymères alvéolaires souples - Détermination de l'indice d'écoulement d'air à chute de pression constante
Automatic translation from French :
Flexible cellular polymer materials - Determination of air flow index at constant pressure drop
Automatic translation from French :
Flexible cellular polymer materials - Determination of air flow index at constant pressure drop
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Summary
This document specifies two methods for determining the air flow index of flexible cellular polymer materials: — method A, for conventional flexible cellular polymer materials; — method B, for all types of flexible cellular polymer materials, but mainly for materials with low air permeability. For method B, two methods are specified in this document: — method B1: with manual measurement; — method B2: with automatic measurement. NOTE 1 Air flow indices can be used to give an indication of the effects of varying formulation and manufacturing parameters on cell structure. NOTE 2 In this document, the term “conventional flexible cellular polymer materials” refers to types which are not suitable for waterproofing.
(Automatic translation from French)
(Automatic translation from French)
Technical characteristics
| Publisher | Association Française de Normalisation (AFNOR) |
| Publication Date | 08/01/2023 |
| Release Date | 08/01/2023 |
| Page Count | 25 |
| EAN | --- |
| ISBN | --- |
| Weight (in grams) | --- |
