FZ/T 73041-2011Warp-knitted hosiery (English PDF)

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

This standard was proposed by the China Textile Industry Association.

This standard is under the jurisdiction of the National Textile Standardization Technical Committee Knitting Subcommittee (SAC/TC209/SC6).

This standard was drafted. Haining Nail Socks Co., Ltd., National Knitting Product Quality Supervision and Inspection Center, Zhejiang Socks Co., Ltd., Yixing Yidie Knitting Co., Ltd., Langsha Knitting Co., Ltd., Zhejiang Buyen Knitting Co., Ltd., Changzhou Wujin Wuyang Textile Machinery Co., Ltd.

Company, Zhejiang Clockwise Clothing Co., Ltd.

1 Scope

This standard specifies the terms and definitions of warp knitting socks, product classification, requirements, test methods, judgment rules, product instructions, packaging, and transportation.

Loss and storage.

This standard applies to the identification of the quality of chemical fiber warp knitting socks (trousers).

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.

Pieces. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 250 Textile color fastness test for gray color card for color change GB/T 2910 (all parts) Quantitative chemical analysis of textiles GB/T 2912.1 Determination of formaldehyde - Part 1 . Freely hydrolyzed formaldehyde (water extraction method) GB/T 3920-2008 Textile color fastness test color fastness to rubbing GB/T 3921-2008 Textile color fastness test color fastness to soaping Test method for color fastness to perspiration of textiles GB/T 3922 GB/T 4856 needle cotton fabric packaging GB 5296.4 Consumer Goods Instructions for Use of Textiles and Clothing GB/T 5713 Textile color fastness test color fastness to water GB/T 7573 Determination of pH of textile water extracts GB/T 8170 Numerical Rounding Rules and Representation and Determination of Limit Values GB/T 17592 Determination of banned azo dyes for textiles GB 18401 National Textile Products Basic Safety Technical Specifications GB/T 23344 Textiles - Determination of 4-aminoazobenzene FZ/T 01053 Identification of textile fiber content FZ/T 01057 (all parts) Textile fiber identification test method FZ/T 01095 Test method for fiber content of textile spandex products GSB16-2159 Standard Depth Sample Card for Knitting Products (1/12)

3 Terms and definitions

The following terms and definitions apply to this document.

A cylindrical, one-piece sock woven from a double needle bed warp knitting machine.

Underarm warp socks (ship socks) warp-knittedankle-highsocks the stockings are located in the warp socks of the ankles and below.

Short tube warp stocking warp-knittedcrewsocks the socks are located in the lower part of the lower leg and above the ankle.

Warp-knittedknee-highsocks the socks are located under the knees and the warp socks on the upper part of the lower leg.

Long tube warp stocking warp-knittedsocks Warp socks with socks on the knees.

4 Product Categories

Warp-knitted socks are divided into underarm warp-knitted socks (ship socks), short-tube warp-knitted socks, medium-tube warp-knitted socks, long-length warp-knitted socks, warp-knitted pantyhose (trousers).

5 Requirements

11 Color flowers, oil stains, slight staining allow obvious removal of the foot surface

12 Color difference, color bar allows 4-5 level to allow 4 levels

13 Minor scratches allow obvious permission

14 Thread heads are allowed within 0.5cm~1.5cm

Note 1. The length of the appearance defect is measured and measured by the longest length (diameter) of the defect.

Note 2. In case of appearance defects not specified in the provisions, refer to the relevant points for discretion.

Note 3. The appearance of the surface defects is evaluated according to the "Socks on the surface of the socks."

Note 4. Descriptive degree description.

a) Minor---The point is not obvious in the visual, and can be seen by careful identification.

b) Obvious - does not affect the overall effect, but can feel the presence of defects.

5.3.4 Sewing regulations

5.3.4.1 Warp-knitted socks (pants) are sewn with three-wire and four-line overlock sewing machines. The width of the seam (knife door) is 0.3cm~0.4cm, and the stitch density is three-line.

The seam is not less than 8 needles/cm, the four-line overlock is not less than 6 needles/cm, the three-needle four-wire or three-needle five-line stretch is not less than 5 needles/cm, and the seam is laterally pulled.

The stretched position of the waist is straight in the middle of the back waist.

5.3.4.2 Warp knitted socks (trousers) are sewn with elastic sewing threads.

5.4 Intrinsic quality requirements and grading regulations

5.4.1 Intrinsic quality requirements

5.4.1.1 Straight and horizontal extension values

5.4.1.1.1 The straight and horizontal extension values are shown in Table 4 to Table 6.

Table 4 The straight and lateral extension values of the underarm warp socks (socks) are in centimeters

Sock number

Straight extension value (bottom length) Lateral extension value (socket) 20~22 23 22~24 26 24~26 29 26~28 32

Table 5 The horizontal extension of short, medium and long warp socks is in centimeters

category

Lateral extension

Socks, socks, socks

Short tube warp stockings 20 -Mid-tube warp stocking 25 25 Long tube warp socks 28 28

Table 6 Warp pantyhose (pants) straight, lateral extension value in centimeters

category

Lateral extension

Straight extension

Waist on the stockings under the sock, hip width, straight leg length Warp-knitted pantyhose (trousers) 40 35 22 60 38 130

5.4.1.1.2 Straight extension. The length of the warp leg length is not assessed.

5.4.1.1.3 Horizontal extension value. The warp-knitted pants are not evaluated for the lateral extension of the sock, but the lateral extension of the cuffs is assessed. nine pants >= 22cm, Cropped trousers >= 26cm, five pants >= 30cm.

5.4.1.2 Intrinsic quality other requirements See Table 7 for other requirements for intrinsic quality.

Table 7 Other requirements for intrinsic quality

First-class quality products Fiber content (net dry content) /% Performed in accordance with FZ/T 01053 regulations Formaldehyde content/(mg/kg) pH value Odor Decomposable carcinogenic aromatic amine dye/(mg/kg) Execute according to GB 18401 Water fastness/grade >= Color fastness to perspiration/level >= Color fastness to rubbing/grade >= Soap fast color fastness/grade >= Color change 3-4 3 Stained 3-4 3 Color change 3-4 3 Stained 3-4 3 Dry 3-4 3 Wet Mo 3 (Dark 2-3) 3 (Dark 2-3) Color change 3-4 3 Stained 3-4 3 Note. Color binning is performed according to GSB16-2159 standard, >1/12 standard depth is dark, <=1/12 standard depth is light color.

5.4.2 Internal quality extension value grading regulations the intrinsic quality extension value is specified in Table 8.

Table 8 The internal mass extension value is divided into centimeters.

First-class quality products Lateral extension Socks, socks, pants Meet the requirements of this standard. Two differences Allowed within 2.0 Exceeding the first-class standard requirements -2.0, two Only the difference exceeds the first-class product specification 1.0 the waist and hip width meet the requirements of this standard and exceed the standard of the first class -5.0 Straight extension Straight Leg length Bottom length in accordance with the provisions of this standard Exceeding the first-class standard -3.0 Exceeding the first-class standard -5.0 Exceeding the first-class standard requirements -2.0

6 Test methods

6.1 Number of samples

6.1.1 Appearance quality According to the delivery batch, the sampling, color and specification are randomly sampled by 2%~3%, but not less than 10 pairs (Article).

6.1.2 The intrinsic quality shall be randomly sampled by the delivery batch, by type, color and specification, not less than 6 pairs (Article).

6.2 Appearance quality inspection conditions

6.2.1 Lighting inspection is generally used. Use a 40W glaucoma or white fluorescent lamp with a lampshade, and inspection countertop center Vertical distance (50 ± 5) cm or under D65 light source.

6.2.2 If indoor natural light is used, the light should be properly placed. The direction of light in the direction of the north to the left (or right) is not allowed to direct sunlight.

6.2.3 During the inspection, the product shall be spread evenly on the inspection platform. The inspector shall face the surface of the product. If the suspicious defect involves the intrinsic quality, Fine inspection or reverse inspection, but the rating is considered to be straight.

6.2.4 When measuring the size of the specification, it should be measured without external tension.

6.3 Sample preparation and test conditions

6.3.1 Intrinsic quality specimens shall not have defects that affect the accuracy of the test.

6.3.2 Physical test sample preparation. Before the test, it should be placed at room temperature for 20 h, then the temperature in the laboratory is (20 ± 2) ° C, and the relative humidity is the test was carried out after being placed for 4 hours under conditions of (65 ± 4)%.

6.4 Test items

6.4.1 Specification size test

6.4.1.1 Test tool. The scale shall have a length greater than the length of the specimen and a graduation value of millimeters.

6.4.1.2 Test operation. Place the warp-knitted socks (pants) on a smooth surface, and measure the measuring tape according to the corresponding parts. See Figure 1 to Figure 3 for details.

6.4.2 Straight and lateral extension test

6.4.2.1 Test equipment Test equipment includes.

a) Electric cross puller. standard tension (25±0.5)N, extended tension (33±0.65)N; moving lever travel speed is (40 ± 2) mm/s;

b) Multi-functional stretching instrument. adjustable within the range of 0.1N~100N, length measurement range (25±1)cm~(300±1)cm, shift the moving speed of the moving lever is (40±2) mm/s, the standard pulling force is (25±0.5)N, and the extended pulling force is (33±0.65)N.

6.4.2.2 Test site

6.4.2.2.1 Test area for underarm warp socks.

a) lateral extension of the sock. both ends of the sock;

b) The bottom length extends straight. the tip of the sock to the heel.

6.4.2.2.2 Short, medium and long tube warp socks test parts.

a) lateral extension of the sock. middle of the sock;

b) the lateral extension of the upper stocking. the middle stocking is 5cm below the sock, and the stocking is 10cm below the sock;

c) Lateral extension of the lower stocking. 10 cm from the tip of the sock.

6.4.2.2.3 Test area for pantyhose (trousers).

a) lateral extension of the waist. middle of the waist;

b) lateral extension of the hip width. 10 cm below the waist;

c) the lateral extension of the upper stocking. 10cm below the straight squat;

d) lateral extension of the lower sock. 10 cm from the tip of the sock;

e) the lateral extension of the cuff. the middle of the cuff;

f) Straight extension. from the waist to the extension of the bottom;

g) Straight leg extension. from the bottom extension line to 1.5cm from the tip of the sock.

6.4.2.3 Test operation

6.4.2.3.1 Standard tensile force (25 ± 0.5) N is used.

6.4.2.3.2 Tights test of pantyhose (pants). first stretch in the horizontal part, and then stretch for 30 minutes before stretching.

6.4.2.3.3 Straight tamping test The tensile test is carried out by folding the waist to the left and right sides of the sill.

6.4.2.3.4 Lateral extension test, except for the waist and the mouth of the pants, which are stretched from the inside to the outside, and the other parts are 1cm from the left and right edges.

After clamping, it is stretched.

6.4.2.3.5 The two legs of the pantyhose should be tested separately.

6.4.2.3.6 If the specimen slips on the hook during the test, the test shall be repeated.

6.4.2.4 Calculation method the pass rate is calculated according to formula (1), and the result is rounded up to the whole number according to GB/T 8170.

A=nN ×100

In the formula.

A---Qualification rate, %;

n --- test the total number of qualified places;

N---test the total number of places.

6.4.3 Fiber content test Execute according to GB/T 2910, FZ/T 01057, FZ/T 01095.

Test site.

a) The underarm socks (socks) do not include the socks.

b) Other warp socks (pants) are usually cut from the stockings, not including the waist.

6.4.4 Formaldehyde test Execute according to GB/T 2912.1.

6.4.5 pH test

Execute according to GB/T 7573.

6.4.6 Odor test

Execute according to GB 18401.

6.4.7 Decomposable carcinogenic aromatic amine dye test Execute according to GB/T 17592 and GB/T 23344. Generally, first test according to GB/T 17592, when aniline and/or 1,4-benzene is detected when the diamine is used, it is tested according to GB/T 23344.

6.4.8 Color fastness test Execute according to GB/T 5713.

6.4.9 Color fastness test for perspiration Execute according to GB/T 3922 regulations.

6.4.10 Color fastness test According to the provisions of GB/T 3920-2008, only straight (socks for socks, other socks).

6.4.11 Color fastness test for soaping resistance Execute according to GB/T 3921, the test method adopts A(1).

6.4.12 Color difference rating According to GB/T 250.

7 Decision rules

7.1 Processing method of test results

7.1.1 Appearance quality in the case of double (bar), if the rate of non-compliance exceeds 5.0% or the hole is more than 3.0%, the batch is judged to be unqualified.

7.1.2 Intrinsic quality

7.1.2.1 Straight and horizontal extension values are acceptable for testing the qualification rate of 5 pairs of socks.

7.1.2.2 If the fiber content, formaldehyde content, pH value, odor and test result are all qualified, the batch of products shall be judged as qualified. Otherwise, the batch shall be judged to be qualified.

The product is unqualified.

7.1.2.3 Color fastness to water, color fastness to perspiration, color fastness to rubbing, color fastness to soaping, decomposable carcinogenic aromatic amine dye test results If all are qualified, it is judged that the batch of products is qualified. Otherwise, the color separation determines that the batch of products is unqualified.

7.2 Review

7.2.1 If any party disagrees with the inspection result, it may request re-examination of the objectionable item within the specified time limit.

7.2.2 When submitting for re-inspection, all the quantities submitted for re-inspection shall be retained.

7.2.3 The results of the re-inspection shall be implemented in accordance with the provisions of 7.1 of this standard, which shall prevail.

8 Product instructions, packaging, transportation, storage

8.1 Product use instructions are implemented in accordance with GB 5296.4 and GB 18401.

The specifications are marked.

a) the underarm warp socks indicate the sock number in centimeters;

b) short, medium and long-length warp-knitted socks are marked in centimeters as the appropriate height range or stocking number;

c) Warp-knitted pantyhose indicates the height range and hip range that are suitable for wearing in centimeters;

d) Warp-knitted pants are marked with a range of suitable hips in centimeters, and the words "nine pants, cropped trousers, five pants" are marked.

8.2 The package shall be implemented in accordance with the provisions of GB/T 4856 or the agreement.

8.3 Product packaging and transportation should be fireproof, moisture proof and pollution prevention.

8.4 The product should be stored in a cool, ventilated, dry and clean warehouse, and it should be mildewproof and anti-mite.