Polymeric materials, cellular, flexible - Determination of air flow value at constant pressure-drop
NORM herausgegeben am 1.1.2024
Bezeichnung normen: ČSN EN ISO 7231
Zeichen: 645423
Katalog-Nummer: 518222
Ausgabedatum normen: 1.1.2024
Zahl der Seiten: 28
Gewicht ca.: 84 g (0.19 Pfund)
Land: Tschechische technische Norm
Kategorie: Technische Normen ČSN
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