ISO 7231
Polymeric materials, cellular, flexible — Determination of air flow value at constant pressure-drop
| Organization: | ISO |
| Publication Date: | 1 July 2010 |
| Status: | active |
| Page Count: | 16 |
| ICS Code (Cellular materials): | 83.100 |
scope:
This International Standard 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.
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 International Standard, the expression "conventional type of flexible cellular polymeric material" means types which are unsuitable for sealing purposes.
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