FZ/T 54023-2009 PDF English
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| FZ/T 54023-2009 | English | 155 |
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Polyamide 66 industrial filament yarns for air bag
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FZ/T 54023-2009: Polyamide 66 industrial filament yarns for air bag---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/FZT54023-2009
FZ
TEXTILE INDUSTRY STANDARD OF
THE PEOPLE’S REPUBLIC OF CHINA
ICS 59.060.20
W 52
FZ/T 54023-2009
Polyamide 66 industrial filament yarns for air bag
ISSUED ON: JANUARY 20, 2010
IMPLEMENTED ON: JUNE 01, 2010
Issued by: Ministry of Industry and Information Technology of the People’s
Republic of China.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Terms and definitions ... 5
4 Product specifications and identification ... 5
5 Technical requirements ... 6
6 Test methods ... 7
7 Inspection rules ... 11
8 Re-inspection rules ... 11
9 Marking, packaging, transportation, storage ... 12
Polyamide 66 industrial filament yarns for air bag
1 Scope
This Standard specifies the terms and definitions, product specifications and
identification, technical requirements, test methods, inspection rules and marking,
packaging, transportation and storage requirements of polyamide 66 industrial filament
yarns for air bags.
This Standard applies to polyamide 66 industrial filament yarns for air bags, made from
polyamide 66 chips as raw materials. This product is mainly used in industries such as
automobile safety air bags, and its linear density ranges from 200 dtex to 800 dtex.
Other categories of products use this as a reference.
2 Normative references
The following documents contain the provisions which, through reference in this
Standard, become the provisions of this Standard. For dated references, their
subsequent amendments (excluding corrigendum) or revisions do not apply to this
Standard. However, the parties who enter into agreement based on this Standard are
encouraged to investigate whether the latest versions of these documents are applicable.
For undated reference documents, the latest versions apply to this Standard.
GB/T 2828.1-2003 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: Fibre
and yarn
GB/T 3291.3 Textiles - Terms of textile material properties and test - Part 3: General
GB/T 4146.1 Textiles - Man-made fibres - Part 1: Generic names
GB/T 6502 Sampling method of man-made filament yarns
GB/T 6504 Testing method for oil content of man-made fibres
GB/T 8170 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 Man-made fibre - Test method for tensile properties of filament yarns
6.4 Determination of dry heat shrinkage
6.4.1 Test conditions
6.4.1.1 Dry heat shrinkage tester: a device with temperature indication and time
recording, and capable of recording the shrinkage and shrinkage force of the specimen.
6.4.1.2 Laboratory samples: 20 pieces, each sample is tested once.
6.4.1.3 Heated length of the specimen: according to the model of the instrument heating
plate, the length is accurate to ±1.0 mm.
6.4.1.4 Heat treatment temperature: (180 ± 3) ℃.
6.4.1.5 Heat treatment time: (120 ± 10) s.
6.4.1.6 Pre-tension: (0.050 ± 0.005) cN/dtex.
6.4.2 Test steps
6.4.2.1 After extracting the surface wire of a laboratory sample, place it under the
standard atmospheric conditions specified in 6.1.1 to condition the humidity for at least
16 h.
6.4.2.2 Cut a specimen wire that is suitable for the length of the heating plate from the
surface of the laboratory sample after humidity adjustment, hang it for another 3 h under
the standard atmospheric conditions specified in 6.1.1 as the specimen to be tested.
6.4.2.3 Adjust the heat treatment temperature, time and pre-tension of the instrument to
meet the requirements of 6.4.1.
6.4.2.4 Fix one end of the specimen to be tested on the specimen holder of the
instrument, add a pre-tensioned weight to the other end through a rotating guide pulley,
avoid changing the twist of the specimen during the operation.
6.4.2.5 Click the test button, and the instrument heating plate automatically enters the
specimen holder. After the specified test time is reached, the instrument heating plate
automatically returns to the initial position. The instrument records the heat shrinkage
value after heat treatment, and then takes out the tested specimen.
6.4.2.6 Calculate the test results.
6.4.3 Calculation
The dry heat shrinkage is calculated according to formula (1) and formula (2):
6.7.5 Record the results.
7 Inspection rules
7.1 Inspection type
Both physical performance and appearance quality requirements are factory-exit
inspection items.
7.2 Inspection items
Physical performance indicators are inspected according to the items specified in Table
1, and appearance quality requirements are inspected bobbin by bobbin according to
the items specified in Table 2.
7.3 Batch rules
Periodic sampling is used within a certain range to form a test batch. A product batch
can be composed of one test batch or several test batches.
7.4 Sampling regulations
7.4.1 All appearance items are inspected.
7.4.2 Laboratory samples of physical performance items shall be sampled according to
the provisions of GB/T 6502.
7.4.3 The damaged roll packages shall not be sampled.
7.5 Comprehensive evaluation
7.5.1 The measured or calculated values of the physical performance test items shall be
compared with the index limit values in Table 1 according to the rounded off value
comparison method in GB/T 8170 to evaluate the grade.
7.5.2 The appearance test items shall be compared with the requirements of Table 2
after inspection in accordance with 6.7 and evaluated bobbin by bobbin.
7.5.3 Products that meet the qualified product requirements of 7.5.1 and 7.5.2 at the
same time shall be judged as qualified products. If one of the performance does not
meet the qualified product requirements of 7.5.1 or 7.5.2, they shall be judged as
unqualified products.
8 Re-inspection rules
8.1 General rules
Within three months after a batch of products arrives at the consignee, a re-inspection
may be requested for acceptance or if there is any objection to the quality. If more than
one-third of the quantity of the batch of products has been used, re-inspection shall not
be applied. If the quality of the batch of products affects the quality of the post-
processing products and causes serious losses, the supply and demand parties shall
analyze the reasons, clarify the responsibilities, and negotiate to deal with it.
8.2 Inspection items
Same as 7.2.
8.3 Batch regulations
Batch according to product batches.
8.4 Sampling regulations
8.4.1 Appearance is a sampling inspection. According to the batch size, the sample size
(code) is determined according to the general inspection level II in Table 1 of GB/T
2828.1-2003.
8.4.2 Laboratory samples of physical performance inspection items are sampled for
inspection according to 7.4.2.
8.5 Comprehensive evaluation
8.5.1 Appearance is based on the sample size of 8.4.1, and then according to the
acceptance quality level AQL value of 4.0 in the “normal inspection single sampling
plan” in Table 2-A of GB/T 2828.1-2003, determine the qualified acceptance number
Ac and the unqualified rejection number Re. According to the provisions of 5.3, if the
number of unqualified roll packages is ≤ Ac, it is judged as qualified; if the number of
unqualified roll packages is ≥ Re, it is judged as unqualified.
8.5.2 The physical performance test items are graded according to the provisions of 5.2.
8.5.3 The grade of the product batch is comprehensively assessed according to the
grades of 8.5.1 and 8.5.2. If it meets the qualified product requirements of 8.5.1 and
8.5.2 at the same time, it is judged as qualified; if it does not meet the qualified product
requirements of 8.5.1 or 8.5.2, it is judged as unqualified.
9 Marking, packaging, transportation, storage
9.1 Marking
9.1.1 Product label: each product has a product label inside the bobbin, which identifies
the product category, production time, and production location.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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