FZ/T 81021-2014 PDF in English
FZ/T 81021-2014 (FZ/T81021-2014, FZT 81021-2014, FZT81021-2014)
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Woven swimming wear
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Standards related to (historical): FZ/T 81021-2014
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FZ/T 81021-2014: PDF in English (FZT 81021-2014) FZ/T 81021-2014
FZ
TEXTILE INDUSTRY STANDARD OF
THE PEOPLE’S REPUBLIC OF CHINA
ICS 61.202
Y 76
Woven Swimming Wear
ISSUED ON. OCTOBER 14, 2014
IMPLEMENTED ON. APRIL 1, 2015
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 Requirements... 5
5 Test Methods ... 13
6 Inspection Classification Rules ... 17
7 Marking, Packaging, Transportation and Storage ... 22
Woven Swimming Wear
1 Scope
This Standard specifies all the technical characteristics of woven swimming wear, such
as requirements, test methods, inspection classification rules, and marking, packaging,
transportation and storage, etc.
This Standard is applicable to swimming wear and cap (primary fabric. textile woven
fabric).
This Standard is not applicable to swimming wear or cap for infants (age ≤ 36 months).
2 Normative References
The following documents are indispensable to the application of this Standard. In terms
of references with a specified date, only versions with a specified date are applicable
to this Standard. The latest version (including all the modifications) of references
without a specified date is also applicable to this Standard.
GB/T 250 Textiles - Tests for Color Fastness - Grey Scale for Assessing Change in
Color
GB/T 251 Textiles - Tests for Color Fastness - Grey Scale for Assessing Staining
GB/T 3921-2008 Textiles - Tests for Color Fastness - Color Fastness to Washing
with Soap or Soap and Soda
GB/T 4841.3 Color Cards of Standard Depths for Dyeing with Dyestuffs 2/1, 1/3,
1/6, 1/12, 1/25
GB 5296.4 Instructions for Use of Products of Consumer Interest - Part 4. Textiles
and Apparel
GB/T 5714 Textiles - Tests for Color Fastness - Color Fastness to Sea Water
GB/T 8170 Rules of Rounding off for Numerical Values & Expression and Judgment
of Limiting Values
GB/T 8433-2013 Textiles - Tests for Color Fastness - Color Fastness to Chlorinated
Water (Swimming-pool Water)
GB/T 8629-2001 Textiles - Domestic Washing and Drying Procedures for Textile
Testing
4.2.2 One-piece swimsuit shall indicate the suitable net height, net chest
circumference or net waist circumference (unit. cm).
Example. 170/95.
4.2.3 Split swimsuit shall indicate the suitable net height, net chest circumference or
net waist circumference (unit. cm). The tops of split swimsuit (with brassiere) shall
comply with stipulations in FZ/T 81020.
Example. A75.
4.2.4 Swimming pants shall indicate the suitable net height and net waist
circumference (unit. cm).
Example. 180/100.
4.2.5 The specification of swimming cap shall comply with stipulations in FZ/T 80010.
4.3 Raw Materials
4.3.1 Fabric
Fabrics that can comply with the quality requirements of this Standard shall be selected
in accordance with relevant national-level standards on fabric.
4.3.2 Lining
Linings that are suitable for all the fabrics and can comply with the quality requirements
of this Standard shall be adopted.
4.3.3 Accessories and Strings
Buttons, zippers and other accessories that are suitable for all the fabrics shall be
adopted; the surface of buttons shall be clean, smooth and impeccable. Accessories
shall have no defects, sharp points or edges; accessories shall not be deformed,
discolored, stained or rusty after being washed. Zippers shall be smooth and have
satisfying meshes. Strings that can comply with the quality requirements of this
Standard shall be adopted in accordance with relevant national-level standards on
textile products.
4.4 Color Difference
Color difference on the surface, and between the tops and bottoms of split swimsuit
shall be ≥ Level-4; color difference of linings shall be ≥ Level 3-4 (excluding special
design).
4.5 Appearance Defects
The allowable existence of defects on each part of finished products shall comply with
than 1/12 standard dyeing darkness shall be considered as light colors.
4.9.3 Only products with spliced dark and light colors shall be considered in washing
splicing and inter-staining. Color fastness to light shall not be assessed in fluorescent
color.
4.9.4 The assessment index of qualified products with color fastness to wet friction
resistance (dark fabric) is allowed to be half a level lower than this Standard.
4.9.5 Elastic fabric shall not be assessed in dimensional stability to washing, seaming
performance and breaking strength; seaming performance shall not be assessed in
the external decorative part.
4.9.6 Elastic elongation and tensile elastic recovery rate to chlorinated water
(swimming pool water) shall only be assessed in fabric and lining that contains
spandex fiber. Tensile elastic recovery rate to chlorinated water (swimming pool water)
shall not be assessed in split woven swimsuit. When the content of elastic fiber in fabric
or lining is < 8%, tensile elastic recovery rate to chlorinated water (swimming pool
water) shall not be assessed. Tensile elastic recovery rate to chlorinated water
(swimming pool water) shall only be assessed in elastic direction.
5 Test Methods
5.1 Test Instruments
5.1.1 Steel tap or ruler (division value. 1 mm).
5.1.2 Grey scale for assessing change in color (tests for color fastness) (GB/T 250).
5.1.3 Grey scale for assessing staining (tests for color fastness) (GB/T 251).
5.1.4 Color cards of standard depths for dyeing with dyestuffs 1/12 (GB/T 4841.3).
5.2 Specification Measurement of Finished Products
5.2.1 Specification of main parts of finished products shall comply with stipulation 4.2.
5.2.2 Allowable deviation of specification and dimension of finished products shall
comply with stipulation 4.7; methods of measuring the main parts shall comply with
stipulations in Table 6 and Figure 2 below.
Table 6 Unit. cm
No. Part Measurement Stipulations
1 Length
Measure from the highest part of front shoulder strap to the
bottom edge; strap-connected. measure from the highest
part of front body to the bottom edge.
2 Chest Horizontally measure the widest part of chest (calculated by
finished products, the sample card in GB/T 250 shall be adopted for comparison.
5.4 Physical and Chemical Performance Measurement
5.4.1 Dimensional stability to washing shall be determined in accordance with
stipulations in GB/T 8630; washing methods shall comply with Procedure 5A in GB/T
8629-2001. Hanging-to-dry shall be adopted as the mode of drying; 3 pieces of finished
products shall be randomly taken from the batch for tests; the average value of the 3
pieces shall be taken as the final result.
5.4.2 Color fastness to soaping of finished products shall be determined in accordance
with method A (1) in GB/T 3921-2008.
5.4.3 Color fastness to chlorinated water (swimming pool water) shall be determined
in accordance with stipulations in GB/T 8433-2013; effective chlorine concentration.
50 mg/L.
5.4.4 Color fastness to sea water shall be determined in accordance with stipulations
in GB/T 5714.
5.4.5 Elastic elongation test shall be conducted in accordance with 8.3.1 (25 N) in FZ/T
01034-2008.
5.4.6 Tensile elastic recovery rate to chlorinated water (swimming pool water).
a) Sample processing. randomly take 3 pieces of samples respectively in the
horizontal and vertical direction (effective working size. 10 cm x 5 cm). The
processing of samples shall comply with stipulations in GB/T 8433-2013. Stir
for 4 h; effective chlorine concentration. 50 mg/L.
b) Determination of tensile elastic recovery rate to chlorinated water (swimming
pool water). handle the processed sample in accordance with stipulation
8.3.2.2 in FZ/T 70006-2004; rate. 300 mm/min, constant force. 15 N, pre-
tension. 0.1 N, time of repeated stretch. 3. The average value of the 3 stretches
shall be taken; the result shall be revised to an integer number in accordance
with GB/T 8170.
5.4.7 Other physical and chemical performance items shall be determined in
accordance with GB/T 21294; seaming performance shall be sampled in accordance
with the style of garment.
5.4.8 As to test items of sampling parts that are not mentioned here, samples can be
taken on finished products in accordance with the demand.
6 Inspection Classification Rules
6.1 Inspection Classification
Table 7
Item No. Slight Defect Intermediate Defect Severe Defect
Appearance
and Sewing
Quality
Trademark is not
neat and obviously
deflective; instruction
content is non-
standard and
indistinct
Instruction content is
incorrect
Pages are missing
from instruction
content
2 --- ---
Degumming,
penetrated gum and
wrinkles exist in
gluing area
3 Uneven ironing; bright light exists
Slight yellow stain;
discoloration
Degenerative;
dilapidated
Stains on the
surface; ≥ 3 useless
threads (1.0 cm) on
the surface
Obvious stains.
fabric > 2.0 cm2;
lining > 4.0 cm2;
water stain > 4.0 cm2
Severe stains.
fabric > 3.0 cm2
Each sewing part is
uneven, elasticity is
inappropriate;
bottom edge is
unsmooth;
overlocking seam <
0.7 cm; burr,
dislocation, omission
< 1.0 cm. 2 single
jump needles exist
within 30 cm. Width
of top stitching is
inconsistent
There are obvious
folds; burr,
dislocation, omission
≥ 1.0 cm; holes on
the edge of the
surface are exposed.
There are
successive jump
needles, or > 2 jump
needles within 30
cm; there are jump
needles in the
seaming of 4 and 5
threads; missing or
broken threads in
keyhole > 0.5 cm
burr, dislocation,
omission > 2.0 cm.
there are chained
jump needles
Zippers are unevenly
installed; zipper
teeth are
inconsistent
Zippers are
obviously uneven
Zipper teeth are
missing; zipper lock
falls off
Waistband is
obviously uneven
and unsmooth; width
difference > 0.3 cm;
facing leans out of
front edge; uneven
--- ---
500 PCS ~ 1,000 PCS (including 1,000 PCS). 20 PCS shall be sampled.
≥ 1,000 PCS. 30 PCS shall be sampled.
Sampling of physical and chemical performance. ≥ 4 PCS.
6.4 Determination Rules
6.4.1 Single product (sample) appearance determination
Superior product. severe defect = 0, intermediate defect = 0, slight defect ≤ 4.
First-class product. severe defect = 0, intermediate defect = 0, slight defect ≤ 7, or
severe defect = 0, intermediate defect ≤ 1, slight defect ≤ 3.
Qualified product. severe defect = 0, intermediate defect = 0, slight defect ≤ 8, or
severe defect = 0, intermediate defect ≤ 1, slight defect ≤ 6.
6.4.2 Batch Determination
When a product fails ≥ 1 item in physical and chemical performance test, it shall be
determined that the sampling batch is unqualified.
Superior product batch. number of superior products by appearance ≥ 90%, number
of first-class and qualified products ≤ 10% (excluding unqualified products). Each
physical and chemical performance test satisfies with the indicator requirements of
superior product.
First-class product batch. number of first-class products (and above) by appearance ≥
90%, number of qualified products ≤ 10% (excluding unqualified products). Each
physical and chemical performance test satisfies with the indicator requirements of
first-class product.
Qualified product batch. number of qualified products (and above) by appearance ≥
90%, number of unqualified products ≤ 10% (excluding unqualified products with
severe defects). Each physical and chemical performance test satisfies with the
indicator requirements of qualified product.
When the determination of appearance sewing quality is inconsistent with the
determination of physical and chemical performance, the inferior grade shall be the
final result.
6.4.3 Determination of qualified number
When the determined number in each sampling batch complies with the above
stipulations, products can be allowed to exit factory in corresponding grade.
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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