Leather Sole

Leather sole

Topic content and scope of application

This standard specifies the classification, technical requirements, testing methods, inspection rules, marking, packaging, pportation and storage of leather shoes outsole.

This standard applies to natural rubber, synthetic rubber, thermoplastic elastomer, rubber and plastics and other materials made of the outsole, not suitable for acid, alkali, oil, leather shoes and other outsole.

2. reference standards

GB3293 China shoes and shoe last series

GB3904 folding test method for footwear

GB3905 footwear wear test method

GB531 rubber Shaoer A hardness test method

Test method for tear strength of GB530 vulcanized rubber

3. product classification

3.1 are divided into male, female and child outsole.

3.2 specifications for GB3293.

4. technical requirements

4.1 the thickness shall conform to the regulation of Table 1.

Table 1 unit: mm

Men's leather outsole, women's shoes and children's shoes.

Forming base (sheet)) imitation leather base (film hole bottom).

4.5~6.0 3.8~5.0 7.0~12.0 3.5~5.5 2.8~4.0 5.5~10.0

Note: before the thickness of the palm part of the force.

4.2 the maximum mutual deviation of each part of the double outsole should be in accordance with table 2.

Table 2 mm

The length of the outsole, the thickness of the outer bottom, the thickness of the film, the thickness of the bottom of the leather, the thickness of the bottom of the hole.

Mutual deviation Max 1 1 0.5 0.5 0.5 1

4.3 the appearance quality should conform to the regulation of Table 3.

Table 3

Item grade two grade

Chromatic aberration is not allowed in the same parts of double bottom (film). The color difference is basically the same as that of batch.

Pollution is not allowed to have obvious pollution, allowing slight pollution.

surface

The obvious parts of the impurity are not allowed, and the non obvious parts are allowed, but the accumulative area is not greater than 50mm2mm, the depth is not greater than 1mm, the obvious parts are not allowed, but the accumulative area is not greater than 25mm2, the depth is not greater than 1mm, but the accumulative area of the non obvious parts is not larger than 100mm2, and the depth is not greater than 1mm.

The bubble area is not allowed. The diameter of the non obvious part is not greater than 2mm. The diameter below 3 is allowed to have a diameter of not more than 2mm, with a limit of 1. The diameter of the non obvious part is not greater than 3mm, and the diameter is less than 4.

Lack of glue 1) the surface of the pattern is not allowed, and the rear end is allowed to have a depth of not more than 1.5mm. The surface of the 1 patterns on the long 5mm is not allowed, and the front and rear ends are allowed to have a depth of not more than 2mm, and 2 of the long 10mm.

It is allowed to have a diameter of not more than 2mm at 1 locations, and the position of non force parts is not greater than 4mm. The locations of the 2 parts are allowed to have 1 diameters not greater than 3mm, and the 3 parts of the non force parts are allowed to have diameters greater than 4mm.

The pattern is not clear, slightly noticeable.

No sulphur, frost and sponge are allowed.

Note: 1) including defects caused by trimming.

4.4 the physical and mechanical performance indicators are shown in Table 4.

Table 4

Variety items: imitation leather (bottom), black rubber bottom (piece), color rubber (film) plucent bottom (pparent bottom (film), thermoplastic rubber sole (film), polyurethane bottom (chip), micro hole bottom (film).

The folding resistance (crack length) is less than 40, or less than 12, or less than 12, or less than 10, or less than 10, or less than 12.

QD wear resistance (wear mark length) is less than 10, less than 10, or less than 10, or less than 16, 10 or less than 10.

Hardness Shahr A 80~90 55~72 50~70 50~65 55~70 40~55 (Shaw w)

Compression variant% - - less than 30

The tear strength is greater than 245 or more than 275.

Note: the outsole used for making adhesive shoes is not tested for tear strength.

5. test method

5.1 the maximum mutual deviation and the appearance quality of each part of the thickness and the double outsole (film) should be mainly based on measuring tools and combined with perception.

5.2 the folding resistance test is carried out according to the regulations of GB3904, the pre cut 5mm is continuously flexed 40 thousand times.

5.3 wear resistance measurement is carried out according to GB3905 regulations.

5.4 hardness is measured according to the GB531 method. The bottom of the micropore is tested by the Shahr W hardness tester, and the non microporous bottom is tested by the Shahr A hardness tester.

5.5 compression deformation performance is determined according to GB4495 regulations.

5.6 tear strength is determined according to GB530 regulations.

6. inspection rules

6.1 factory inspection (or delivery inspection)

6.1.1 the appearance quality inspection of the finished products should be carried out by double (film). According to this standard, 4.1, 4.2 and 4.3 are qualified products.

When the physical and mechanical properties of 6.1.2 products are tested, 3 pairs of 20 thousand pairs (less than 20 thousand pairs of 20 thousand pairs of meters) are extracted, which conform to the 4.4 provision of this standard as qualified products. If there is a non-conformity requirement, the sample is allowed to be doubled, and the item is retested. If the item still does not meet the requirements, it will be classified as unqualified.

6.2 type examination (or routine examination)

6.2.1 product quality random sampling of not less than 100 pairs (tablets) according to the standard 4.1, 4.2, the provisions of the inspection, according to 6.1.1 judge.

6.2.2 physical and mechanical properties of the product were randomly selected for 3 double (tablets) according to the 4.4 provisions of this standard for 6.1.2 test.

7 marks, packaging, pportation and storage

7.1 mark

The following marks should be marked on the finished product of 7.1.1:

Name of manufacturer;

Regulations;

Trademarks.

7.1.2 the outer package should have the following symbols:

Name of manufacturer;

Regulations;

Trademarks.

7.2 packaging

The finished products are packed in potato boxes or plastic bags.

7.3 pport and storage

During pportation, avoid sun and rain, and not stack with oil, acid, alkali and fuel.

7.4 storage

The warehouse should be ventilated and dry. The finished product should be 0.2mm away from the ground and wall, away from the heat source 0.2m, and the storage period is 6 months.