Foreword
This document is drafted in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules of standardization documents".
Please note that some of the contents of this document may involve patents. The issuer of this document does not assume responsibility for identifying patents. This document is proposed by the China Textile Industry Federation.
This document is attributed to the National Technical Committee for Textile Standardization, Hemp Textiles Sub-Technical Committee (SAC/TC 209/SC 4).
1 Scope
This document specifies the terms and definitions of natural moisture-absorbing and quick-drying hemp textiles. Requirements, test methods, inspection rules. Marking, packaging, transportation and storage.
This document applies to pure hemp (ramie, flax, hemp) or hemp (ramie, flax, hemp) 30% and above, with natural moisture-absorbing and quick-drying properties of blended or interwoven products. With rooibos, jute and other hemp fiber as the main component of hemp textiles can refer to the implementation.
This document does not apply to the moisture-absorbing and quick-drying finishing or add moisture-absorbing and quick-drying functional fiber hemp textiles.
2 normative reference documents
The following documents constitute the essential provisions of this document through the normative references in the text. Among them, note the date of the reference document, only the date of the corresponding version applies to this document; do not note the date of the reference document, its latest version (including all the change orders) applies to this document.
GB/T 5296.4 Consumer Goods Instructions for Use Part 4: Textiles and Clothing
GB/T 8629-2017 textile testing with home washing and sub-drying procedures
GB 18401 National basic safety technical specifications for textile products
GB/T 21655.1-2008 Textiles moisture absorption and quick drying surname assessment know Part 1: single combination test method
GB 31701 infant and children's textile products safety Jikei specifications
3 terms and definitions
GB / T 21655.1-2008 and the following terms and definitions apply to this document.
3.1
Natural moisture absorption and quick-drying hemp textile products bast fibres textile products with natural moisture absorption and quick-drying properties
Pure hemp (ramie, flax, hemp) or hemp (ramie, flax, hemp) 30% and above of the blended or interwoven products, without any moisture absorption and quick-drying finishing, without adding moisture absorption and quick-drying functional fibers of textiles.
3.2
Water absorption ratewater absorption rate
After the sample is completely wetted in water and taken out to no drip, the sample absorbed water on the original quality of the percentage of the sample.
[Source: GB/T 21655.1-2008, 3.1]
4 Requirements
4.1 Project
The requirements of natural moisture-absorbing and quick-drying hemp textiles are divided into four aspects: intrinsic quality, appearance quality, moisture-absorbing and quick-drying performance and safety.
4.2 Intrinsic quality and appearance quality
Should be in line with the relevant parties contractual agreements or the corresponding national standards for textiles, industry you standard.
4.3 Moisture-absorbing and quick-drying performance
Moisture-absorbing and quick-drying performance is divided into AAA, AA, A grade. After 5 washes, the products are required to absorb moisture and breathable performance indicators according to Table 1.
5 test methods
5.1 Inner quality and appearance quality
The test method of the inner quality and appearance quality of the product is carried out according to the corresponding national standards or industry standards for textiles.
5.2 Moisture-absorbing and quick-drying performance
Moisture absorption and quick drying performance test according to GB/T 21655.1-2008 implementation, washing and drying procedures according to GB/T 8629-2017 implementation, using a standard washing machine, 4N washing program, continuous washing 5 times, hanging to dry.
5.3 Safety
According to GB18401 and GB31701 in the implementation of the method specified.
6 inspection rules
6.1 Batch regulations
By the same species, the same color number of products as one or a number of inspection lots.
6.2 Acceptance of product quality
6.2.1 Sampling rules according to the contractual agreement of the parties concerned or according to the corresponding national standards of textile island, industry standards, etc. The number of samples taken should meet the test requirements of all acceptance items, including moisture absorption and quick drying performance grain test with a representative sample (block).
6.2.2 intrinsic quality and appearance quality of the test method and evaluation of the contractual agreement of the relevant parties or according to the current national standards or industry standards for textiles, the level of moisture absorption and quick-drying performance in accordance with Table 1, when the moisture absorption and quick-drying performance is lower than the requirements of the A level, it is judged that the batch of products do not meet the requirements of natural moisture absorption and quick-drying hemp textiles.
6.2.3 The basic safety performance of the product according to the provisions of GB 18401, infants and children with the safety performance of the product according to the provisions of GB 31701.
7 signs, packaging, transportation and storage
7.1 Marking and packaging according to the contractual agreement of the relevant parties or according to the corresponding national standards for textiles, industry standards, etc. implementation.
7.2 Each packaging unit should be accompanied by instructions for use, instructions for use should be consistent with the requirements of GB/T 5296.4, and should indicate the number of this document and indicate the level of moisture absorption and quick drying performance of the product.
Translated with DeepL
