GB/T 16604-2017Polyester filament for industry (English PDF)

1 Scope

GB/T 16604-2017 is the Chinese national standard on polyester filament for industry, in the field of textile and leather technology. The /T suffix marks it as a recommended standard: it is not compulsory by itself, but it becomes binding as soon as a contract, a tender or a customer specification calls it up - which in practice is how most foreign buyers meet it. It was issued on 29 December 2017 by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China; Standardization Administration of China, and has been in force since 1 July 2018. Classification: ICS 59.060.20, CCS W52. This page is published from the official record of the standard held by the Chinese standards administration: the identification, the dates, the classification and the issuing body are taken from there. The clause text, the tables and the numeric limits are in the document itself, which is delivered complete in English translation.

This Standard specifies the terms and definitions, classification and identification, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of polyester filament for industry. This Standard is applicable to polyester filament for industry with a linear density of 140 dtex ~ 9,000 dtex; other polyester filaments for industry may take this as a reference.

2 Normative References

The following documents are indispensable to the application of this document. In terms of references with a specified date, only versions with a specified date are applicable to this document. In terms of references without a specified date, the latest version (including all the modifications) is applicable to this document.

GB/T 2828.1-2012 Sampling Procedures for Industry by Attribute - Part

1.Sampling Schemes Indexed by Acceptance Quality Limit (AQL) for Lot-by-lot Inspection

GB/T 3291.1 Textiles - Terms of Textile Material Properties and Test - Part

3 Terms and Definitions

What is defined in GB/T 3291.1, GB/T 3291.3 and GB/T 4146 (all parts), and the following terms and definitions are applicable to this document.

3.1 Index of Dimensional Stability Index of dimensional stability refers to the sum of elongation rate of fiber under

4.0 cN/dtex load and the dry-hot shrinkage rate.

3.5 High-tenacity Low-shrinkage Polyester (HTLS) Filament for Industry High-tenacity low-shrinkage polyester filament for industry refers to polyester filament for industry whose dry-hot shrinkage rate (test conditions. 177 °C, 10 min, pre-tension

0.05 cN/dtex) is not greater than 2.5%, and whose breaking tenacity is not less than

3.8 Ultra-low-shrinkage (ULS) Polyester Filament for Industry Ultra-low-shrinkage polyester filament for industry refers to polyester filament for industry whose dry-hot shrinkage rate (test conditions. 190 °C, 15 min, pre-tension

0.01 cN/dtex) is not greater than 3.0%, and whose breaking tenacity is not less than

3.9 High-modulus Low-shrinkage (HMLS) Polyester Filament for Industry High-modulus low-shrinkage polyester filament for industry refers to polyester filament for industry characterized by the index of dimensional stability and not greater than 10.

4 Classification and Identification

4.1 Classification In accordance with product performance, polyester filament for industry may be divided into three types. high-tenacity type, low-shrinkage type and high-modulus low- shrinkage type. The subdivision of the various types is as follows:

5 Technical Requirements

5.1 Polyester filaments for industry are divided into three grades. superior, first-class and qualified. The physical indicators of each grade are shown in Table 1 ~ Table 3.

5.2 The appearance items and indicators shall be determined by the demand-side and the supply-side through negotiation, or, in accordance with the stipulations of Appendix A.

7 Inspection Rules

7.1 Type of Inspection The items in Table 1 ~ Table 3 are all exit-factory inspection items.