GB/T 22853-2019Knitted sportwears (English PDF)

3.1 Fluorescent color

A fluorescent color that appears after being illuminated by a UV lamp.

5.1 Requirements

Requirements are divided into two aspects: intrinsic quality and appearance quality.

5.2 Grading requirements

5.2.1 Quality grades are divided into superior products, first-grade products, qualified products.

5.2.2 Intrinsic quality is graded by batches. The appearance quality is graded by pieces. The combination of both is graded based on the minimum grade.

5.3 Intrinsic quality requirements

5.3.1 The internal quality requirements are as shown in Table 1.

5.3.2 Children garments shall also comply with the relevant provisions of GB 31701.

5.3.3 Natural color and bleached products are not subject to the assessment of the color fastness to soap-washing, color fastness to rubbing, color fastness to perspiration, color fastness to water.

5.3.10 Tight-mouthed products and shorts are not subject to the assessment of twisting rate after water-washing.

5.3.11 For the quick-drying performance after moisture absorption, it only assesses the garment products on which this function is indicated.

5.4 Appearance quality requirements

5.4.1 Surface defects

5.4.3 Dimensional difference at symmetrical parts

The dimensional difference at symmetrical parts is as shown in Table 4.

5.4.4 Sewing requirements

5.4.4.1 The shoulder joints of the garments, the commissure of the crotch, the edges of the seams shall be reinforced.

6.1 Number of samples

6.1.1 For the intrinsic quality, randomly take 4 samples based on batches, types, colors. If it is insufficient, it may increase the number of pieces.

6.2 Intrinsic quality inspection

6.2.1 Preparation and test conditions

6.2.1.1 The sample taken shall have no defects which may affect the test.

6.2.2 Test method

6.2.2.1 Fiber content

It is performed according to the provisions of GB/T 2910, FZ/T 01057, FZ/T 01026, FZ/T 01095, FZ/T 01101.

6.2.2.2 Formaldehyde content

It is performed according to the provisions of GB/T 2912.1.

6.2.2.3 pH value

It is performed according to the provisions of GB/T 7573.

6.2.2.4 Odor

It is performed according to the provisions of GB 18401.

6.2.2.8 Color fastness to rubbing

It is performed according to the provisions of GB/T 3920, only on the longitudinal direction.

6.2.2.9 Color fastness to water

It is performed according to the provisions of GB/T 5713.

6.2.2.10 Color fastness to light

It is performed according to the provisions of method 3 of GB/T 8427-2008.

6.2.2.15 Pilling

It is performed according to the provisions of the method E of GB/T 4802.1-2008. It is graded according to GSB 16-1523 Photos of pilling sample of knitted fabric.

6.2.2.16 Dimensional change rate after washing

6.2.2.17 Twisting rate after washing

6.2.2.17.1 Washing and drying methods

It is performed according to the washing and drying methods for the dimensional change rate after washing.

6.3 Appearance quality inspection

6.3.1 Appearance quality inspection conditions

6.3.1.1 Generally, it uses light inspection in a light source which has an illumination of not less than 600 lx. If natural light sources are used indoors, the natural north light shall prevail.

6.3.2 Measurement location and measurement method

6.3.3 Grading of color difference

It is graded according to GB/T 250.

6.3.4 Skewed grain

It is performed according to the provisions of GB/T 14801.

7.1 Batch Judgement for intrinsic quality

7.2 Batch Judgement for appearance quality

For the appearance quality, calculate the nonconformance grade rate based on types and colors.

7.3 Judgement of single piece

If the number of product inspections is lower than the number of samples in batch judgement, for the intrinsic quality and appearance quality, according to the requirements of 7.1 and 7.2, it only judges the tested sample, indicates in the inspection report.

7.4 Other judgments

It is not allowed for garments to have defects which have serious impact onto use.

7.5 Re-inspection