SS-EN-ISO-7231 Polymeric materials, cellular, flexible - Determination of air flow value at constant pressure-drop (ISO 7231:2023)

SS-EN-ISO-7231 - 2023 EDITION - CURRENT
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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.

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83.100 (Cellular materials)

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Designation Name

SS-EN ISO 7231:2023

Revision Level

2023 EDITION

Status

Current

Publication Date

Aug. 28, 2023

Language(s)

English

Page Count

24

International Equivalent

EN ISO 7231:2023(IDT); ISO 7231:2023(IDT)