FZ/T 81021-2014Woven Swimming Wear (English PDF)

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.

5.1 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

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.

6.1 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

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.

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