GB 1103.1-2023Cotton - Part 1: Saw ginned upland cotton (English PDF)

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents".

This document is Part 1 of GB 1103 "Cotton". GB 1103 has released the following parts.

---Part 1: Saw-toothed fine velvet cotton;

---Part 2: Top roller processing of fine velvet cotton;

---Part 3: Natural colored fine velvet cotton.

This document replaces GB 1103.1-2012 "Cotton Part 1: Sawtooth Processed Fine Staple Cotton". Compared with GB 1103.1-2012, in addition to structural adjustments and editorial changes, the main technical changes are as follows.

---Added short fiber rate indicators and inspection content (see 3.5, 4.9, 6.1.8, 7.1.2.1, 7.2.2.2, 8.3.1);

---Changed the relevant requirements for "four points" (see 4.1.1.4, 4.1.1.4 of the 2012 version);

---Changed the sampling rules by batch (see 5.3.1, 2012 version of 5.3.1);

---Changed the sampling requirements for heterosexual fibers (see 5.3.3, 2012 version of 5.3.3);

--- Added content for handling objections to color grade inspection results (see 6.1.1.1);

---Changed the production basis and production quantity requirements of the rolling quality physical standard (see 6.1.2.1, 4.2.4.1 of the 2012 edition);

--- Added standards for testing methods for foreign fibers (see 6.1.5.2);

---Deleted the content of estimating the impurity content of seed cotton purchased (see 6.2.1.1 of the 2012 version);

---Changed the handling of objections to impurity content test results (see 6.2.1.1, 2012 version of 6.2.1.1);

--- Added reference standards for the public clothing percentage of seed cotton (see 6.2.3.1);

---Deleted the requirement that non-compliance should be sorted out (see 7.3.1.1 of the 2012 version);

---Added QR code cotton bale mark form (see 9.3.2.1);

---Added transition period requirements for standard implementation (see Chapter 11);

---Changed the color grading diagram (see Appendix B, Appendix B of the 2012 version);

---Changed the rolling quality classification conditions (see Appendix C, Appendix C of the 2012 version);

---Changed the rolling quality reference index (see Appendix D, Appendix D of the 2012 edition).

Introduction

Cotton is an important bulk agricultural product and raw material for the textile industry related to the national economy and people's livelihood. The cotton industry plays an important role in increasing farmers' income, developing the textile industry, and absorbing Employment, international trade, etc. are all of great significance. In order to ensure the orderly development, procurement, processing, trade, warehousing and use of cotton industry With the development of cotton, my country has carried out the construction of standard system for the entire cotton industry chain. In the cotton standard system, cotton is divided into fine-staple cotton and long-staple cotton.

Velvet cotton is the main category in my country. According to the processing method, fine velvet cotton is divided into sawtooth processed fine velvet cotton and roller processed fine velvet cotton. According to the color difference Divided into white cotton and natural colored cotton. The national standard for fine velvet cotton is the basis for guiding the production, acquisition, processing, trade, warehousing and use of fine velvet cotton in my country.

These standards are designed to stipulate the quality requirements, inspection rules, inspection certificates, packaging and marking, storage and transportation of different types of fine velvet cotton. The content is intended to be composed of three parts.

---Part 1: Sawtooth processed fine velvet cotton. The purpose is to establish the quality requirements, inspection rules, inspection certificates, Packaging and marking, storage and transportation, etc., facilitate the production and trade of sawtooth processed fine velvet cotton in my country.

---Part 2: Top roller processing of fine velvet cotton. The purpose is to establish the quality requirements, inspection rules, inspection certificates, Packaging and marking, storage and transportation, etc., facilitate the production and trade of fine velvet cotton processed by top rollers in my country.

---Part 3: Natural colored fine velvet cotton. The purpose is to establish the quality requirements, inspection rules, inspection certificates, Packaging and marking, storage and transportation, etc., facilitate the production and trade of natural colored fine velvet cotton in my country.

Among them, Part 3 was converted into a recommended standard according to the National Standardization Administration Announcement No. 7 of 2017.

Cotton fine lint cotton product standards are the basic standards for the cotton industry. In order to do this job well, our country first issued the GB 1103-1972 "Cotton (Fine Staple Cotton)" was revised three times in 1999, 2007 and 2012.Revision for the third time in 2012 It will be split into two parts at the scheduled time, namely GB 1103.1-2012 "Cotton Part 1: Sawtooth Processed Fine Staple Cotton" and GB 1103.2-2012 "Cotton Part 2: Top roller processing of fine-staple cotton". It has been more than ten years since GB 1103.1-2012 was released and implemented. During this period The cotton industry has undergone significant changes. First, production is further concentrated from the three major cotton areas to Xinjiang, with Xinjiang's output accounting for more than 90%;

For the first time, the picking mode basically transitioned from manual picking to mechanical picking, with the machine picking rate exceeding 80%; finally, the degree of industrial agglomeration in the cotton spinning industry continued.

Improvement, processing equipment continues to be transformed, cotton yarn products develop towards high-end, and cotton spinning enterprises shift from focusing on appearance quality to paying more attention to intrinsic quality.

In view of this, it is indeed necessary to revise and improve GB 1103.1 to adapt to the new situation and new requirements of the development of my country's cotton industry in the past ten years and lead the popularization of machine-picked cotton.

After widespread promotion, the quality of the cotton industry has improved.

Over the past ten years, cotton inspection technology and technical equipment have made new developments. This revision actively incorporates relevant research and innovation results and introduces short-term The fiber rate index has added testing methods such as the fully automatic raw cotton impurity analysis system method, the foreign fiber manual method, and the QR code mark.

Strictly set the standard impurity content and rolling quality classification standards, improve the sampling representativeness, and maintain the color grade, micronaire value, length, and fracture ratio The strength index is basically stable, and the transition period for the short fiber rate and the fully automatic raw cotton impurity analysis system method is set based on the basic technical conditions.

1 Scope

This document defines the terms and definitions of sawtooth-processed fine-staple cotton, and stipulates the quality requirements, inspection rules, inspection certificates, packaging and marking, storage and transportation, transition period requirements for standard implementation, etc., and describes the sampling and inspection methods of sawtooth processed fine lint cotton.

This document applies to the production, acquisition, processing, trading, warehousing and use of serrated fine lint cotton.

2 Normative reference documents

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, for dated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document.

GB/T 6097 Cotton fiber test sampling method

GB/T 6098 Cotton fiber length test method Roller analyzer method

GB/T 6102.1 Test method for moisture regain of raw cotton - Oven method

GB/T 6102.2 Test method for moisture regain of raw cotton - Resistance method

GB/T 6498 Cotton fiber micronaire test method

GB/T 6499 Test method for impurity content of raw cotton

GB 6975 cotton packaging

GB/T 8170 Numerical rounding rules and representation and determination of limit values

GB/T 13786 Simulated daylight lighting for cotton grading rooms

GB/T 19617 Cotton length test method - hand ruler measurement method

GB/T 20392 Test methods for physical properties of cotton fibers - Large capacity fiber tester method

GB/T 35931 Test method for neps and short fiber ratio of cotton fibers Photoelectric method

GB/T 40628 Test method for laundry content of seed cotton - Zigzag test rolling method

GB/T 41690 Quantitative test method for foreign fiber in raw cotton Manual method

3 Terms and definitions

The following terms and definitions apply to this document.

3.1 Saw ginned upland cotton

Fine-staple cotton processed on a saw-tooth gin.