Polymeric materials, cellular flexible - Determination of air flow permeability (ISO/FDIS 4638:2026)

Comment end date 2026-10-12

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Project stage codes

1. Prioritetinių darbo temų pažymėjimas ir ekspertų skyrimas

2. Projektas

3. Viešoji apklausa

From 2026-08-13 till 2026-10-12

4. Closure of enquiry

5. Submission to Formal Vote

Organisation

CEN Europos standartizacijos komitetas

ICS

83.100 - Cellular materials

Technical Committee

TK 68 Plastics

ForeignTC'S

CEN/TC 249

Number of comments

Comment start date

2026-08-13

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.

Relations

Pakeis

prEN ISO 4638