GB/T 14463-2022Viscose staple fiber (English PDF)
粘胶短纤维
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
April 15, 2022
Implementation date
November 1, 2022
Scope
GB/T 14463-2022 is the English-translated version of 粘胶短纤维.
GB/T 14463-2022 is the Chinese national standard for viscose staple fibre.
It gives the classification and the designation, the technical requirements - linear density and its deviation, length and its deviation, breaking strength dry and wet, elongation, residual sulphur, oil content, whiteness, defects and the number of over-length fibres - the test methods, the inspection rules and the provisions on marking, packaging, transport and storage.
It applies to bright viscose staple fibre from 0.66 dtex to 6.67 dtex made from cotton pulp and wood pulp, and other viscose fibres may use it for reference. Fibre plants, spinners and their laboratories use it.
It replaces GB/T 14463-2008, was issued on 15 April 2022 and has applied since 1 November 2022.
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Document preview — GB/T 14463-2022
National Standard of the People's Republic of China
- ICS
- 59.060.20
- Classification
- W 52
- Replacing
- GB/T 14463-2008
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword3
- 1 Scope5
- 2 Normative references5
- 3 Terms and definitions6
- 4 Classification and identification6
- 5 Technical requirements6
- 6 Test method9
- 7 Inspection rules10
- 8 Marking, packaging, transportation, storage11
Foreword
This document was drafted in accordance with the provisions of GB/T 1.1-2020 "Directives for standardization - Part 1: Rules for the structure and drafting of standardizing documents".
This document replaces GB/T 14463-2008 "Viscose staple fiber". Compared with GB/T 14463-2008, in addition to structural adjustments and editorial changes, the main technical changes are as follows:
- CHANGE the scope of application (see Chapter 1; Chapter 1 of the 2008 edition);
- CHANGE the normative references (see Chapter 2; Chapter 2 of the 2008 edition):
- CHANGE the terms and definitions (see Chapter 3; Chapter 3 of the 2008 edition):
- CHANGE the classification and identification (see Chapter 4; Chapter 4 of the 2008 edition):
- DELETE the substandard products in product classification (see 5.1 of the 2008 edition);
- ADD the performance items and indicators of fine denier viscose staple fibers (see 5.2.1);
- CHANGE the indicators of breaking strength, residual sulfur, defect items and the central value of whiteness items (see 5.2.2, 5.2.3, 5.2.4; 5.2.1, 5.2.2, 5.2.3 of the 2008 edition).
1 Scope
This document specifies the classification and identification, technical requirements, test methods, inspection rules and markings, packaging, transportation, storage of viscose staple fibers.
This document is applicable to natural glossy viscose staple fibers with a linear density of 0.66 dtex ~ 6.67 dtex, which is produced from cotton pulp and wood pulp. Viscose staple fibers of other raw materials and specifications can make reference to this standard.
2 Normative references
The contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, for referenced documents with dates, only the version corresponding to that date applies to this document; for referenced documents without dates, the latest version (including all amendments) applies to this document.
GB/T 4146 (all parts) Textiles - Man-made fibres
GB/T 6503 Man-made fibers - Test method of moisture regain
GB/T 6504 Man-made fiber - Test method for oil content
GB/T 14334-2006 Sampling method for man-made staple fibres
GB/T 14335-2008 Testing method for linear density of man-made staple fibres
GB/T 14336 Testing method for length of man-made staple fibres
GB/T 14337 Man-made fibre - Test method for tensile properties of staple fibre
GB/T 14338 Man-made fibre - Test method for crimping performance of staple fibre
GB/T 14339-2008 Testing method for defect of man-made staple fibres
FZ/T 50013 Method for the determination of whiteness of viscose fibres - Diffuse blue reflection factor
FZ/T 50014 Method for the determination of residual sulphur in viscose fibres -
5.4 Moisture regain
The standard moisture regain is 13%; the moisture regain of the product shall be controlled within 8% ~ 13%. The batch with an average value exceeding 14% or the part with a single specimen exceeding 15% shall not be exit-factory. Products with a moisture regain of less than 8% shall be exit-factory only after obtaining the user's consent.
6 Test method
6.1 Coefficient of variation of breaking strength, breaking elongation, breaking force It is performed in accordance with GB/T 14337.
6.2 Linear density deviation rate
It is performed in accordance with GB/T 14335-2008. The mid-section weighing method of bundle fiber shall be used for arbitration. For fine denier fibers, the number of sampling pcs can be appropriately increased.
6.3 Length deviation rate, super long fiber rate, double length fiber content It is performed in accordance with GB/T 14336.
6.4 Residual sulfur content
It is performed in accordance with FZ/T 50014.
6.5 Defect content
It is performed in accordance with GB/T 14339-2008; method B (hand picking method) is used for arbitration.
6.6 Oily yellow fiber content
It is performed in accordance with GB/T 14339-2008.
6.7 Whiteness
It is performed in accordance with FZ/T 50013.
6.8 Number of curls
It is performed in accordance with GB/T 14338.
6.9 Oil content
It is performed in accordance with GB/T 6504.
6.10 Moisture regain
It is performed in accordance with GB/T 6503.
7 Inspection rules
7.1 Inspection types
Product inspection is divided into exit-factory inspection and acceptance inspection.
7.2 Exit-factory inspection
7.2.1 Inspection items
The exit-factory inspection items are 5.2, 5.3, 5.4, of which 5.3 and 5.4 are not used as items for grade rating.
7.2.2 Batch grouping rules
Periodic sampling is used to form inspection batches within a certain range. A production batch can be composed of one inspection batch or several inspection batches.
7.2.3 Sampling
The sampling of each performance item is carried out in accordance with the sampling method for off-line products in GB/T 14334-2006.
7.2.4 Grade rating
The measured or calculated values of the performance items (see 5.2) are compared with the limit values in Tables 2 ~ 5; the grade is determined item by item. The lowest grade among the quality indicators is determined as the grade of the batch of products.
7.3 Acceptance inspection
7.3.1 General
The buyer shall promptly check whether the outer packaging, number of pieces, mass of the batch product packaging are consistent with the bill of lading. Within one month after a batch of products arrives at the buyer, if there is any objection to the product quality, it can be submitted for re-inspection. The re-inspection can be carried out by either party and agreed by both parties. If necessary, the arbitration inspection agency can be required to take samples, inspect, and arbitrate according to the requirements of this document.
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 21 pages — is available in the English PDF.
Referenced standards
Normative references
- GB/T 6503Man-made fibres—Test method of moisture regain
- GB/T 6504Man-made fiber—Test method for oil content
- GB/T 14334-2006Sampling method for man-made staple fibres
- GB/T 14335-2008Testing method for linear density of man-made staple fibres
- GB/T 14336Testing method for length of man-made staple fibres
- GB/T 14337Man-made fibre—Test method for tensile properties of staple fibre
GB/T 4146
Similar standards
Editions of GB/T 14463
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 14463-2022 | Viscose staple fiber | current edition | Current |
| GB/T 14463-2008 | Viscose staple fiber | previous edition | Superseded |
This page sells the current edition, GB/T 14463-2022. Earlier editions are listed for reference only.
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Related Standards
GB/T 14334-2006 — Sampling method for man-made staple fibres
GB/T 14335-2008 — Testing method for linear density of man-made staple fibres
GB/T 14336-2008 — Testing method for length of man-made staple fibres
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