GB/T 13758-2008Viscose filament yarn (English PDF)

1 Scope

GB/T 13758-2008 is the Chinese national standard on viscose filament yarn, 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 6 August 2008 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 June 2009. 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 requirements for product classification, technical requirements, test methods, inspection rules and marks, packaging, transportation, and storage of viscose filament yarn. This Standard is applicable to the viscose filament yarn that is produced from cotton pulp or wood pulp. This Standard is applicable to the authentication and acceptance of the viscose filament yarn of which the linear density is at 66.7dtex~333.3dtex. Dope colored silk, the ones of which the linear density is below 66.7dtex and above 333.3dtex can refer to this Standard as reference.

2 Normative references

The provisions in following documents become the provisions of this Standard through reference in this Standard. For dated references, the subsequent amendments (excluding corrigendum) or revisions do not apply to this Standard, however, parties who reach an agreement based on this Standard are encouraged to study if the latest versions of these documents are applicable. For undated references, the latest edition of the referenced document applies.

GB/T 250, Textiles - Tests for colour fastness - Grey scale for assessing change in colour

GB/T 1250, Rules for expression and judgement of limiting values

GB/T 3291.1, Textiles - Terms of textile material properties and test - Part 1. Fibre and yarn

GB/T 3291.3, Textiles - Terms of textile material properties and test - Part 3. General

3 Terms and definitions

For the purposes of this document, the terms and definitions defined in GB/T 3291.1, GB/T 3291.3 and GB/T 4146 as well as the followings apply.

3.1 product lot The serial production batch number with same raw materials, chemical materials, auxiliary materials, process conditions and product specifications.

4 Product classification and marks

4.1 According to the different amount of matting agent or color paste added during production, viscose filament yarn is divided into shiny yarn, matting yarn, and colored yarn.

4.2 Product specifications are expressed by linear density (dtex) and number of filaments (f).

4.3 The product model is identified by the pulp, product specifications and production process used in production.

5 Technical requirements

5.1 Product grading Viscose filament yarn is graded as excellent, first-class, and qualified products. Those that are lower than qualified products are out-of-class products.

7 Inspection rules

7.1 Inspection type All items in Table 1 are exit-factory inspection items.

8 Reinspection rules

8.1 When the shipment arrives at the consignee, check whether the outer packaging quality, number of pieces, and net quality of the package are consistent with the manifest.

8.2 Within three months, if the product performance quality is found to be inconsistent with the quality report, it can be submitted for re-inspection. If more than one-third of this lot of products is used, no re-inspection is allowed.

8.5 The batching shall be conducted according to the original product lot during reinspection.

8.6 The sampling method during the reinspection shall be carried out according to the sampling method in GB/T 6502.

8.7 The reinspection can be conducted by the manufacturer and the user together for sampling and testing, or it can be arbitrated by the legal inspection agency. The evaluation of the reinspection result shall be implemented according to the evaluation method in 7.5.

8.8 The reinspection result is the final result. The manufacturer is no longer responsible for this lot after the reinspection process.

8.9 When checking and accepting, the public mass calculation is as formula (1), formula (2).