FZ/T 54024-2019 PDF English
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| FZ/T 54024-2019 | English | 175 |
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Polyamide 6 pre-oriented yarns
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| FZ/T 54024-2009 | English | 359 |
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Polyamide 6 pre-oriented yarn
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FZ/T 54024-2019: Polyamide 6 pre-oriented 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/FZT54024-2019
FZ
TEXTILE INDUSTRY STANDARD OF
THE PEOPLE’S REPUBLIC OF CHINA
ICS 59.060.20
W 52
Replacing FZ/T 54024-2009
Polyamide 6 Pre-oriented Yarns
锦纶 6预取向丝
Issued on: MAY 2, 2019
Implemented on: NOVEMBER 1, 2019
Issued by. Ministry of Industry and Information Technology of the People’s
Republic of China.
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 Methods... 7
7 Inspection Rules... 8
8 Marking, Packaging, Transportation and Storage... 10
Appendix A (normative) Appearance Requirements, Inspection and Assessment... 12
Foreword
This Standard was drafted in accordance with the rules provided in GB/T 1.1-2009.
This Standard serves as a replacement of FZ/T 54024-2009 Polyamide 6 Pre-oriented Yarn. In
comparison with FZ/T 54024-2009, the main technical changes are as follows.
---The monofilament linear density range is modified from 1.0 dtex ~ 5.5 dtex into 0.5 dtex
~ 7.0 dtex (see Chapter 1; Chapter 1 of Version 2009);
---In the property items and indicators, the following modifications are made (see Table 1
and 5.4; Table 1 of Version 2009).
The breaking tenacity is adjusted;
The coefficient of variation of elongation at break is adjusted;
The regulation on oil content, which is determined through negotiation between
the supply-side and the demand-side, is added;
---In the appearance items and indicators, loose ring filament is modified into ring filament,
the classification by monofilament linear density is added, and the indicators are
adjusted (see Table A.1; Table A.1 of Version 2009);
---In the appearance inspection conditions, the illumination at the working point is adjusted
(see A.2.1; A.2.1 of Version 2009);
---The humidity adjustment in the general rules of test methods and the quick humidity
adjustment method in Appendix B are deleted (see Chapter 6; 6.1 and Appendix B of
Version 2009).
This Standard was proposed by China National Textile and Apparel Council.
This Standard shall be under the jurisdiction of Shanghai Textile Industry Technical Supervision
Institute.
The drafting organizations of this Standard. Yiwu Huading Nylon Co., Ltd.; Fujian Jinjiang
Technology Co., Ltd.; Zhejiang KINGCHEER New Materials Technology Co., Ltd.;
Guangdong Xinhui Media Nylon Co., Ltd.; Zhejiang Jinshida Chemical Fiber Co., Ltd.; Jiangsu
Wenfeng Chemical Fiber Group Co., Ltd.; Tongkun Group Zhejiang Hengsheng Chemical
Fiber Co., Ltd.; Shanghai Textile Industry Technical Supervision Institute.
The main drafters of this Standard. Tan Yankun, Zhang Xuehua, Wang Jiangen, Yu Chenggang,
Li Rongjiang, Yuan Xiuqin, Pang Haifeng, Wang Chunyan, Zhou Zhende.
The issuing of the previous versions.
Polyamide 6 Pre-oriented Yarns
1 Scope
This Standard specifies the terms and definitions, classification and identification, technical
requirements, test methods, inspection rules, and the requirements for marking, packaging,
transportation and storage of polyamide 6 pre-oriented yarns.
This Standard is applicable to pre-oriented yarns processed from polycaprolactam as the raw
material (mainly used for processing drawn textured yarns), and with a nominal linear density
range of 8 dtex ~ 444 dtex; glossy, semi-dull and full-dull natural-colored polyamide 6 pre-
oriented yarns with a monofilament linear density of 0.5 dtex ~ 7.0 dtex, and a round cross
section.
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 250 Textiles - Tests for Color Fastness - Grey Scale for Assessing Change in Color
GB/T 2828.1-2012 Sampling Procedures for Inspection by Attributes - 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 1.Fiber and Yarn
GB/T 3291.3 Textiles - Terms of Textile Material Properties and Test - Part 3.General
GB/T 4146 (all parts) Textiles - Man-made Fibers
GB/T 6502 Sampling Method of Man-made Filament Yarns
GB/T 6503 Man-made Fibers - Test Method of Moisture Regain
GB/T 6504 Man-made Fiber - Test Method for Oil Content
GB/T 8170-2008 Rules of Rounding off for Numerical Values & Expression and Judgement of
Limiting Values
GB/T 14343 Testing Method for Linear Density of Man-made Filament Yarns
GB/T 14344 Testing Method for Tensile of Man-made Filament Yarns
GB/T 14346 Man-made Fiber - Testing Method for Unevenness of Filament Yarns -
Capacitance Method
FZ/T 50027 Man-made Fibers - Test Method for Determination of the Titanium Dioxide
Content
3 Terms and Definitions
The terms and definitions defined in GB/T 3291.1, GB/T 3291.3 and GB/T 4146 (all parts) are
applicable to this document.
4 Classification and Identification
4.1 In accordance with the amount of titanium dioxide added during production, the products
can be classified into glossy, semi-dull and full-dull yarns.
4.2 Product specifications are identified by linear density (dtex) and the number of
monofilaments (f), for example, if the linear density is 93 dtex and the number of
monofilaments is 68, the product specifications are expressed as. 93 dtex/68 f.
4.3 Product identification shall include. product specifications, color, product name or batch
No., which can be effectively distinguished.
5 Technical Requirements
5.1 Product Grading
Products are divided into three grades. superior products, first-class products and qualified
products.
5.2 Property Items and Indicators
See Table 1.
provisions of 5.3.
7.4.3 For the assessment of the comprehensive grade of the products, the grade of the lowest
property indicator and appearance indicator in the inspection batch shall be determined as the
grade of the batch of products.
7.5 Re-inspection Rules
7.5.1 General rules
Within three months of the arrival of a batch of products to the recipient, re-inspection can be
requested as a matter of acceptance or if there is any objection to the quality. If more than one-
third of the batch of products has been used, the application for re-inspection is not allowed.
However, if the recipient can provide relevant evidence to prove that the batch of products has
indeed affected the quality of the processed products and caused serious losses, the causes shall
be analyzed, the responsibilities of both parties shall be clarified, and the matter shall be
resolved through negotiation.
7.5.2 Inspection items
Same as 7.1.
7.5.3 Batch grouping rules
The batches are grouped in accordance with the original production batch, but the products with
a production date interval of more than 90 days cannot be grouped into batches in accordance
with the same batch No.
7.5.4 Sampling rules
7.5.4.1 The laboratory samples for property items shall be sampled in accordance with the
provisions of GB/T 6502.
7.5.4.2 The appearance shall be subject to sampling inspection. In accordance with the batch
size and the provisions of general inspection level II in Table 1 of GB/T 2828.1-2012, determine
the sample size (character code).
7.5.5 Re-inspection assessment
7.5.5.1 The determined values or calculated values of the property items shall be compared with
the limit values of property indicators in Table 1 in accordance with the rounded value
comparison method in GB/T 8170-2008 for grade assessment.
7.5.5.2 For the appearance items, in accordance with the sample size in 7.5.4.2, and the AQL
value of the normal inspection one-time sampling scheme in Table 2-A of GB/T 2828.1-2012,
which is 4.0, determine the acceptance number Ac and the rejection number Re, and conduct the
assessment based on the contract indicators between the supply-side and the demand-side.
When the number of disqualified coils is Ac, it is the original grade; when the number of
disqualified coils is Re, then, it shall be determined as nonconforming with the original grade.
7.5.5.3 The comprehensive grade of the products shall be assessed in accordance with 7.4.3.If
it is higher than or equal to the original grade, then, it shall be determined as conforming; if it
is lower than the original grade, then, it shall be determined as nonconforming.
7.5.6 Conventional mass
In accordance with the provisions of GB/T 6503, determine the actual moisture regain, and the
conventional mass shall be calculated using Formula (1).
Where,
m---the conventional mass of the batch product packaging, expressed in (kg);
m1---the net mass of the batch product packaging, expressed in (kg);
R0---the conventional moisture regain rate of polyamide 6 pre-oriented yarns, which is 4.5%;
R---the actual determined moisture regain rate, expressed in (%).
The conventional mass difference shall not exceed 0.5%; if it exceeds, it shall be determined
through negotiation between the supply-side and the demand-side.
8 Marking, Packaging, Transportation and Storage
8.1 Marking
The packaging box shall be marked with product name, specifications, grade, batch No., net
weight, gross weight, number of coils, packaging date, serial No. of product standard, trademark,
manufacturing enterprise’s name, detailed address and other relevant information, as well as
moisture-proof, handle with care and other warning signs.
8.2 Packaging
8.2.1 Each coil must be wrapped in a plastic bag before being put in the packaging box.
Supported coils in the packaging box shall be positioned and fixed, and unsupported coils shall
be protected from damage.
8.2.2 The size of coils in each packaging box shall be as uniform as possible. Products of
different varieties, specifications, batch numbers and grades shall be respectively packaged, and
mixed packaging is strictly prohibited.
8.2.3 Each batch of products shall be accompanied by a quality inspection sheet.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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