ISO 4638:1984
Polymeric materials, cellular flexible; Determination of air flow permeability

Standard No.

ISO 4638:1984

Release Date

1984

Published By

International Organization for Standardization (ISO)

Latest

ISO 4638:1984

Scope

Applicable to test pieces cut from products of cellular materials. Useful for two purposes: a) studying the structure of cellular products in connection with their physical properties and their method of manufacture and b) ensuring product quality (quality assurance). Describes principle, apparatus, test piece and conditions, procedure and calculation and expression of the results. Three figures deliver the details for testing.

ISO 4638:1984 history

• 1984 ISO 4638:1984 Polymeric materials, cellular flexible; Determination of air flow permeability