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 breathable hemp textiles, requirements, test methods, inspection rules, marking, packaging, transportation and storage.
This document applies to pure hemp (ramie, flax, hemp) textiles or hemp (ramie, flax, hemp) 30% and above, with natural moisture-absorbing and breathable properties of blended or interwoven products, to rooibos, jute and other hemp fiber as the main component of hemp textiles can refer to the implementation.
This document does not apply to moisture-absorbing and breathable finishing or add moisture-absorbing and breathable 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 revision of the list) applies to this document.
GB/T 5296.4 Consumer goods instructions for use Part 4: textile dynamic clothing
GB/T 5453-1997 Determination of textile fabric breathability
GB/T 8629-2017 Textile test with home washing and drying procedures
GB 18401 National textile products basic safety technology You tuo
GB/T 21655.1-2008 Textiles moisture absorption and quick-drying assessment of know Part 1: single combination test method
GB 31701 Infant and children's textile products safety technical specifications
3 Terms and definitions
GB/T 21655.1-2008, GB/T 5453-1997 and the following terms and definitions apply to this document.
3.1
Natural moisture absorption and air per-meability hemp textile products bast fibers textile products with natural moisture absorption and air per-meability
Pure hemp (ramie, flax, hemp) textiles or hemp (ramie, flax, hemp) 30% and above, with natural moisture absorption and air permeability of blended or interwoven products, without moisture absorption and air permeability finishing or adding moisture absorption and air permeability functional fiber textiles.
4 Requirements
4.1 Project
The requirements of natural moisture-absorbing and breathable hemp textiles are divided into four aspects: inner quality, appearance quality, moisture-absorbing and breathable properties and safety. 4.2 Inner quality and appearance quality
Should be in line with the relevant parties contractual agreements or the corresponding national standards or industry standards for textiles.
4.3 Moisture absorption and breathability
Moisture-absorbing and breathable performance is divided into A grade, AA grade, AAA grade 3 levels of network products after 5 washes its moisture-absorbing and breathable performance index requirements in accordance with 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 performed according to the corresponding national standards or industry standards for textiles.
6 Inspection rules
6.1 Batch regulations
According to the same species, the same color number of products as one or several inspection batches.
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 for textiles, industry standards, etc. The number of samples drawn should meet the test requirements of all acceptance items, including moisture absorption and breathability testing with a representative sample (block).
6.2.2 intrinsic quality and appearance quality test methods and evaluation of the contractual agreement of the parties concerned or according to the current national standards or industry standards for textiles, etc., the level of moisture absorption and breathability performance in accordance with Table 1. When the moisture-absorbing and breathable performance is lower than the A-level requirements, the batch of products is judged not to meet the requirements of natural moisture-absorbing and breathable hemp textiles.
6.2.3 The basic safety performance of the product according to GB 18401 executive total, infants and children with the safety performance of the product according to the provisions of GB31701 implementation.
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 textile standards, industry standards and other 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-absorbing and breathable properties of the product.
7.3 The product in the package should not use sharp objects such as metal pins.
7.4 It should be ensured that the product is not damaged in transportation, and the product is not stained or damp.
7.5 The products should be stored in a cool, ventilated, dry warehouse, pay attention to moth and mildew prevention.
Foreword
1 Scope
2 Normative reference documents
3 Terms and definitions
4 Requirements
5 Test methods
6 Inspection rules
7 Signs, packaging, transportation and storage
