ISO 7231:2023
p
ISO 7231:2023
82601
недоступно на русском языке

Тезис

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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.


Общая информация 

  •  : Опубликовано
     : 2023-08
  •  : 3
  •  : ISO/TC 45/SC 4 Products (other than hoses)
  •  :
    83.100 Cellular materials

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std 2 92 Бумажный
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