GB/T 6508-2015 PDF English
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 6508-2015 | English | 110 |
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Test Method for Dyeing Uniformity of Polyester Filament Yarns
| Valid |
| GB/T 6508-2001 | English | 359 |
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Test method for dyeing uniformity of polyester filament yarns
| Obsolete |
| GB/T 6508-1986 | English | RFQ |
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Test method for dyeing uniformity of polyester filament and textured yarn
| Obsolete |
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GB/T 6508-2015: Test Method for Dyeing Uniformity of Polyester Filament Yarns---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT6508-2015
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 59.060.20
W 50
Replacing GB/T 6508-2001
Test Method for Dyeing
Uniformity of Polyester Filament Yarns
Issued on: SEPTEMBER 11, 2015
Implemented on: APRIL 1, 2016
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative References ... 4
3 Terms and Definitions ... 5
4 Principle ... 5
5 Reagents and Materials ... 5
6 Apparatus ... 6
7 Test Procedures ... 6
8 Test Report ... 10
Foreword
This Standard was drafted as per the rules specified in GB/T 1.1-2009.
This Standard replaced GB/T 6508-2001 Test Method for Dyeing Uniformity of
Polyester Filament Yarns. The major differences between this Standard and GB/T
6508-2001 are as follows.
--- Cancel Method B Instrument Method (see Chapter 1 of this Edition; Chapter 1 of
2001 Edition);
--- Single feed yarn circular hosiery machine is changed into. test knitting machine;
all “hosiery machine” in the corresponding standards is changed into “test knitting
machine” (see 6.1 of this Edition; 4.1.4.1 of 2001 Edition);
--- Modify the scouring conditions; adopt 5g/L neutral soap powder (soap tablets),
1.25 above bath ratio, 85°C temperature, and scouring for 30min (see 7.3.1 of
this Edition; 4.1.6.2 of 2001 Edition);
--- Dye concentration is changed into. disperse blue 2BLN recommended
concentration of 1%~2% (for fabric mass) (see 7.4.1 of this Edition; 4.1.6.3 of
2001 Edition);
--- Modify the dying bath ratio into. bath ratio 1.20 ~ 1.60 (for fabric mass), determine
according to the relevant dyeing machine requirements (see 7.4.1 of this Edition;
4.1.6.3 of 2001 Edition);
--- Dyeing soaking time is changed into. adopt 60min when arbitrating (see 7.4.1 of
this Edition; 4.1.6.3 of 2001 Edition).
This Standard was proposed and under the jurisdiction of China National Textile and
Apparel Council.
Drafting organizations of this Standard. Shanghai Textile Industry Institute of Technical
Supervision, Taicang Zhenhui Chemical Fiber Co., Ltd., Jiangsu Zhonglu Technology
Development Co., Ltd., Tongkun Group Co., Ltd., Jiangsu China and Asia Chemical
Fiber Co., Ltd., Rongsheng Petrochemical Co., Ltd., Haiyan Haili Green Fiber Co., Ltd.,
and Sinopec Yizheng Chemical Fiber Company Limited.
Chief drafting staffs of this Standard. Li Hongjie, Yang Yan, Li Zhongjun, Chen Jieqiu,
Sun Yanlin, Wang Jinxiang, Yu Chuankuan, Chen Hao, and He Rong.
The historical editions replaced by this Standard are as follows.
--- GB/T 6508-1986, GB/T 6508-2001.
Test Method for Dyeing
Uniformity of Polyester Filament Yarns
1 Scope
This Standard specifies the test method for dyeing uniformity of polyester filament
yarns – hosiery dyeing method.
This Standard is applicable to draw texturing yarn and drawn yarn. Other types of
filaments can be used for reference.
2 Normative References
The following documents are essential to the application of this document. For the
dated documents, only the versions with the dates indicated are applicable to this
document; for the undated documents, only the latest version (including all the
amendments) are applicable to this document.
GB/T 250 Textiles - Tests for Colour Fastness - Grey Scale for Assessing Change
in Colour
GB/T 3291.1 Textiles - Terms of Textile Material Properties and Test - Part 1. Fiber
and Yarn
GB/T 3291.3 Textiles - Terms of Textile Material Properties and Test--Part 3.
General
GB/T 4146.1 Textiles - Man-Made Fibers - Part 1. Generic Names
GB/T 4146.3 Textiles - Man-Made Fibers - Part 3. Terms of Inspection
GB/T 6502 Sampling Method of Man-Made Filament Yarns
GB/T 14343 Testing Method for Linear Density of Man-Made Filament Yarns
FZ/T 01047 Standard Light Sources and Conditions for Visual Assessment of
Textile Colour Fastness
--- Temperature. 85°C;
--- Time. 30min.
7.3.2 Scouring procedures
The scouring can be carried out directly in the dyeing machine; can also be carried out
in other equipment with mixing device and can reach the scouring temperature.
Operate according to the following procedures.
--- According to the garter quality, weigh neutral soap powder (soap tablet) (accurate
to 1%) as per the provisions of 7.3.1; use 60°C small amount of water to dissolve
into soap liquid;
--- According to the scouring equipment requirements, determine the bath ratio;
pour water, soap liquid into scouring equipment, and prepare the scouring liquid
bath; after thoroughly mixing, place into the garter; after raise temperature to
85°C, preserve heat for 30min;
--- Discharge waste liquid, take out garter; use about 85°C soft water to wash till it
becomes neutral; dewater, and waiting for dyeing.
7.4 Dyeing
7.4.1 Dyeing conditions
The dyeing conditions are as follows.
--- Dyeing stuff. disperse blue 2BLN recommended concentration is 1%~2% (for
fabric mass); determine the amount of adding according to the color absorption
of the product;
--- Bath ratio. 1.20 – 1.60 (for fabric mass); determine according to relevant
requirements of dyeing machine;
--- Dyeing temperature. boiling dyeing (the boiling point temperature is different as
the atmospheric pressure is changed in different regions) or determine according
to relevant requirements of dyeing machine;
--- Buffering agent. acetic acid – sodium acetate buffering solution, pH=5, add 1mL
per liter of dye bath.
--- Soaking time. when arbitrating, adopt 60min; or determine according to relevant
requirements of dyeing machine.
7.4.2 Dyeing procedures
Operate as per the following procedures.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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