Měkké lehčené polymerní materiály - Stanovení hodnoty propustnosti vzduchu při konstantním tlaku (Norma k přímému použití jako ČSN).

The information about the standard:

Designation standards: ČSN EN ISO 7231
Classification mark: 645423
Catalog number: 518222
Publication date standards: 1.1.2024
The number of pages: 28
Approximate weight : 84 g (0.19 lbs)
Country: Czech technical standard
Kategorie: Technické normy ČSN

Annotation of standard text ČSN EN ISO 7231 (645423):

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