GB/T 14463-2022 English PDF (GB/T14463-2022)

GB/T 14463-2022: Viscose staple fiber
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GB/T 14463-2022
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 59.060.20
CCS W 52
Replacing GB/T 14463-2008
Viscose staple fiber
粘胶短纤维
ISSUED ON: APRIL 15, 2022
IMPLEMENTED ON: NOVEMBER 01, 2022
Issued by: State Administration for Market Regulation;
National Standardization Administration.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Terms and definitions ... 6
4 Classification and identification ... 6
5 Technical requirements ... 6
6 Test method ... 9
7 Inspection rules ... 10
8 Marking, packaging, transportation, storage ... 11
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).
Please note that some contents of this document may involve patents. The issuing
agency of this document does not assume the responsibility for identifying patents.
This document was proposed by the China National Textile and Apparel Council.
This document shall be under the jurisdiction of the National Technical Committee for
Standardization of Chemical Fibers (SAC/TC 586).
The drafting organizations of this document: Weifang Xinlong Biomaterials Co., Ltd.,
Tangshan Sanyou Group Xingda Chemical Fiber Co., Ltd., Shandong Yinying
Chemical Fiber Co., Ltd., Xinjiang Zhongtai Textile Group Co., Ltd., Yibin Siliya Co.,
Ltd., Hebei Jigao Chemical Fiber Co., Ltd., Hunan Juntai New Materials Technology
Co., Ltd., Yantai Xinwang Marine Biotechnology Co., Ltd., Shanghai Textile Industry
Technical Supervision Institute, China Chemical Fiber Industry Association.
The main drafters of this document: Ma Junzhi, Li Changlei, Zhang Dongbin, Fan
Zongfang, Wang Qi, He Min, Li Zhenfeng, Zhang Heyu, Xu Xinquan, Wang Lili, Zhang
Zixin.
Viscose staple fiber
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.
GB/T 14463-2022
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 59.060.20
CCS W 52
Replacing GB/T 14463-2008
Viscose staple fiber
粘胶短纤维
ISSUED ON: APRIL 15, 2022
IMPLEMENTED ON: NOVEMBER 01, 2022
Issued by: State Administration for Market Regulation;
National Standardization Administration.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Terms and definitions ... 6
4 Classification and identification ... 6
5 Technical requirements ... 6
6 Test method ... 9
7 Inspection rules ... 10
8 Marking, packaging, transportation, storage ... 11
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).
Please note that some contents of this document may involve patents. The issuing
agency of this document does not assume the responsibility for identifying patents.
This document was proposed by the China National Textile and Apparel Council.
This document shall be under the jurisdiction of the National Technical Committee for
Standardization of Chemical Fibers (SAC/TC 586).
The drafting organizations of this document: Weifang Xinlong Biomaterials Co., Ltd.,
Tangshan Sanyou Group Xingda Chemical Fiber Co., Ltd., Shandong Yinying
Chemical Fiber Co., Ltd., Xinjiang Zhongtai Textile Group Co., Ltd., Yibin Siliya Co.,
Ltd., Hebei Jigao Chemical Fiber Co., Ltd., Hunan Juntai New Materials Technology
Co., Ltd., Yantai Xinwang Marine Biotechnology Co., Ltd., Shanghai Textile Industry
Technical Supervision Institute, China Chemical Fiber Industry Association.
The main drafters of this document: Ma Junzhi, Li Changlei, Zhang Dongbin, Fan
Zongfang, Wang Qi, He Min, Li Zhenfeng, Zhang Heyu, Xu Xinquan, Wang Lili, Zhang
Zixin.
Viscose staple fiber
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 of...