NF EN ISO 7211-2

NF EN ISO 7211-2

September 2024
Standard Current

Textiles - Methods for analysis of woven fabrics construction - Part 2: Determination of number of threads per unit length

This document specifies three methods for the determination of the number of threads per centimetre in woven fabrics. Any of the three methods can be used, the choice depending on the character of the fabric. However, in case of dispute, method A takes precedence.—     Method A: Dissection of fabric, suitable for all fabrics. This is the most laborious method but has fewer limitations than the others; in particular, it is the only one that is really suitable for the examination of certain folded structures and other complicated weaves.—     Method B: Counting glass, suitable for fabrics with more than 50 threads per centimetre.—     Method C: Traversing thread counter, suitable for all fabrics.Where the number of threads per centimetre is low, it can be convenient to express the results as the number of threads per decimetre.

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Main informations

Collections

National standards and national normative documents

Publication date

September 2024

Number of pages

16 p.

Reference

NF EN ISO 7211-2

ICS Codes

59.080.30   Textile fabrics

Classification index

G07-154-2

Print number

1

International kinship

ISO 7211-2:2024

European kinship

EN ISO 7211-2:2024
Sumary
Textiles - Methods for analysis of woven fabrics construction - Part 2: Determination of number of threads per unit length

This document specifies three methods for the determination of the number of threads per centimetre in woven fabrics. Any of the three methods can be used, the choice depending on the character of the fabric. However, in case of dispute, method A takes precedence.

—     Method A: Dissection of fabric, suitable for all fabrics. This is the most laborious method but has fewer limitations than the others; in particular, it is the only one that is really suitable for the examination of certain folded structures and other complicated weaves.

—     Method B: Counting glass, suitable for fabrics with more than 50 threads per centimetre.

—     Method C: Traversing thread counter, suitable for all fabrics.

Where the number of threads per centimetre is low, it can be convenient to express the results as the number of threads per decimetre.

Replaced standards (1)
NF EN 1049-2
April 1994
Standard Cancelled
Textiles. Woven fabrics. Construction. Methods of analysis. Part 2 : determination of number of threads per unit length.

Le présent document spécifie cinq méthodes de détermination du nombre de fils par centimètre dans les tissus. Chacune de ces cinq méthodes peut être utilisée ; le choix dépend des types de tissu. Cependant, en cas de litige, la méthode A est recommandée.

Table of contents
  • 1 Domaine d'application
  • 2 Références normatives
  • 3 Termes et définitions
  • 4 Principe
  • 5 Longueur minimale de mesure
  • 6 Atmosphère de conditionnement et d'essai
  • 7 Préparation des éprouvettes
  • 8 Méthode A - Détissage du tissu
  • 9 Méthode B - Loupe du compte-fils
  • 10 Méthode C - Compteur de fils à déplacement transversal
  • 11 Calcul et expression des résultats
  • 12 Rapport d'essai
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