ISO 9073-18:2023 不織布 | ページ 2

Foreword

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This document was prepared by Technical Committee ISO/TC 38, Textiles, in collaboration with the European Committee for Standardization (CEN) Technical Committee CEN/TC 248, Textiles and textile products, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).

This second edition cancels and replaces the first edition (ISO 9073-18:2007), which has been technically revised.

The main changes are as follows:

• the title has been changed from"Determination of breaking strength and elongation of nonwoven material using the grab tensile test" to"Determination of tensile strength and elongation at break suing the grab tensile test";
• the Scope has been clarified and made precise;
• new terms have been added to the list of terms in Clause 3;
• new following new Clauses have been added and subsequent clauses have been renumbered:
  • Clause 7, Sampling;
  • Clause 8, Conditioning;
  • Clause 9, Preparation of specimens;
  • Clause 10, Preparation, calibration and verification of apparatus;
  • Clause 13, Expression of results;
  • Clause 14, Precision and bias.

1 Scope

This document specifies a test method for the determination of the breaking force of nonwovens using a grab method in conditioned or wet state.

This test method is not applicable to materials which have a high percentage of stretch. Comparing test results from tensile testing machines operating on different principles is not applicable.

This document specifies methods using constant rate of specimen extension (CRE) tensile testers. Constant-rate-of-loading (CRL) instruments is covered, for information, in ISO 2062:2009, Annex A, in recognition of the fact that these instruments are still in use and can be used by agreement.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

3 Terms and definitions

For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminology databases for use in standardization at the following addresses:

Bibliography