Some standard content:
Chemical Industry Standard of the People's Republic of China
HG/T2495-93
Published on July 5, 1993
Ministry of Chemical Industry of the People's Republic of China
Standard Exchange Network.bse.ccm Various standards industry information free download rate 1994-12-01
Chemical Industry Standard of the People's Republic of China
Subject content and scope of application
HG/T2495-93
This standard specifies the technical requirements, test methods, inspection rules, as well as marking, packaging, transportation and storage of labor shoes. This standard applies to cloth rubber shoes for general labor wear processed by hot vulcanization process. 2 Reference standards
GB/T528 Determination of tensile properties of vulcanized rubber Rubber Shore A hardness test method
GB/T531
GB/T532 Determination of adhesion strength between vulcanized rubber and fabric GB/T1689 Determination of wear resistance of vulcanized rubber (using Akron abrasion machine) GB2941 Standard temperature, humidity and time for environmental conditioning and testing of rubber specimens GB3293 Chinese shoe sizes and shoe plant series
HG/T2198 General requirements for physical test methods for vulcanized rubber HG2403 Inspection rules, signs, Packaging, transportation and storage 3 Technical requirements
3.1 Shoe size and model
Shoe size, model, shoe size and shoe size classification shall be in accordance with GB3293. 3.2 The physical and mechanical properties shall conform to the provisions of Table 1. Table 1
Inspection part
National upper and shoeWww.bzxZ.net
Tensile strength (MPa)
Elongation at break (%)
Hardness (Shore A, degrees)
Abrasion (cm)
Adhesion strength (kN/m)
3.3 The appearance quality shall conform to the provisions of Table 2. Approved by the Ministry of Chemical Industry of the People's Republic of China on July 5, 1993
Standard exchange network: mb28080.c0m Various standards industry information free download guidelines
1994-12-01 implementation
Inner bottom fabric
Random yarn, skipped yarn
Thread skipping, broken thread
Unevenness, bubbles
HG/T2495-93
No on the front of the shoe, the area of random yarn in other parts shall be less than 80mm2, the length of skipped yarn shall be less than 10mm, and only one place shall be basically flat and shall not affect the appearance
No Yes
No
No
The cumulative area does not exceed 300mm. The stitching of the upper is not included.
The cumulative area does not exceed 400mm. The width of the edge is not more than 5mm.
Qualified products
The area of disordered yarn is less than 100mm, the length of skipped yarn is less than 15mm, limited to two places
Does not obviously affect the appearance
Does not obviously affect the appearance after repair
The upper cloth is not allowed to have, the edge strip is damaged less than 5mm, limited to one place, after repair, it does not obviously affect the appearance.
The cumulative area does not exceed 7 00mm helper pinhole penetration is not limited to this
The cumulative area does not exceed 600mm, and the edge hollow width does not exceed 8mm
The cumulative area does not exceed 600mm. The height or depth does not exceed the cumulative area does not exceed 400mm. The height or depth does not exceed 1.5mm
The area does not exceed 300mm. The height or depth does not exceed 2mm, limited to three places
No bending is allowed, and the diameter of other parts does not exceed 1mm, the height or depth does not exceed 0.5mm, and only one sand, impurities, bubbles
(Pinholes are not limited to this)
No bending is allowed, and the depth of other parts does not exceed Exceeding the pressure not firm
Big stems
Sand, impurities, bubbles
Outsole bounces
1mm, limited to one place, the length of the upper seam does not exceed 2mm
The area does not exceed 10mm2
No toe cap and the bending of the surrounding strip, the length of other parts does not exceed 5mm, limited to one place
No
No more than 5mm, basically neat
No toe bend, the diameter of other parts does not exceed 2mm, the height or depth does not exceed 1.5mm, limited to two places
The area does not exceed 300mm basic Flat limited to two places basically clear
Area not exceeding 500mm2, height or depth not exceeding 2mm, limited to three places
No curved places are allowed, other parts do not exceed 2mm in diameter, height or depth does not exceed 0.5mm, limited to two places, (pinholes are not limited)
No curved places are allowed, other parts do not exceed 2mm in depth, limited to two places Upper seam length does not exceed 4mm Area not exceeding 20mm2
No curved places on the toe cap and the surrounding strip, other parts do not exceed 10mm in length, limited to one place
No longer than 5mm in length, limited to one place
Exceeding the first-class specifications The basic neatness
The forefoot bend is not allowed to have any, the diameter of other parts does not exceed 4mm, the height or depth does not exceed 2mm, and the forefoot bend is limited to two places. The length of other parts does not exceed 10mm, and the depth does not exceed 2mm
The cumulative area does not exceed 1000mm. It is basically flat and clear, and slightly affects the appearance
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(a pair of
Upper is not straight
Toe size
Heel length
Part)
Back upper High and low
Adhesion marks
HG/T2495—93
There is a difference at one meter sight distance, which does not affect the appearance
The surface of the whole shoe is relatively slight, which does not obviously affect the appearance. The skew does not exceed 5mm
The difference is not more than 4mm
The difference on the inside is not more than 6mm
The difference is not more than 7mm
The difference between low-top and high-top is not more than 3mm. The difference between high-top and low-top is not more than 5mm
The pattern is basically clear
Basically clear
The molded outsole is slightly frosted, and other parts are not allowed to be qualified
One meter sight distance The difference is obvious, and does not seriously affect the appearance. The cumulative area is within 500mm, and the appearance is not seriously affected. The skew does not exceed 8mm
The difference is not more than 8mm
The difference on the inside is not more than 10mm
The difference is not more than 14mm
The difference between the low top and the high top is not more than 5mm
The pattern is basically clear and does not obviously affect the appearance. Slightly affects the appearance
The molded outsole is not seriously sprayed with frost, and other parts are not allowed to have Note: Quality defects not listed in the above table shall be handled according to similar items in Table 2. Those that seriously affect the appearance or wear shall be listed as unqualified products. 4 Test method
4.1 Test conditions shall be carried out in accordance with the provisions of HG/T2198 and GB2941. The sample should be placed for no less than 6 hours before the test, and the finished product should be cut along the longitudinal direction of the outsole!
4.2 The tensile strength and elongation at break tests shall be carried out in accordance with GB/T528. The shape of the specimen is a dumbbell-shaped cutter of type 1. 4.3 The abrasion test shall be carried out in accordance with GB/T1689. When the test piece is not long enough, it shall be overlapped along the direction of the outsole. When the outsole is thin, the abrasion test piece may be 2~3mm.
4.4 The hardness test shall be carried out in accordance with GB/T531. 4.5 The adhesive strength test shall be carried out in accordance with GB/T532. The specimen shall be cut into two pieces on each cheek of the shoe. The width is 10mm.
5 Inspection rules
Follow the relevant provisions of HG2403 for cloth-covered rubber shoes. 6 Marking, packaging, transportation, storage
Follow the relevant provisions of HG2403 for cloth-covered rubber shoes. Standard fee control network-wx.b28oso.com Free download of various standard oil industry materials Additional notes:
HG/T2495-93
This standard is proposed by the Science and Technology Department of the Ministry of Chemical Industry of the People's Republic of China, and this standard is under the jurisdiction of the Shanghai Rubber Shoes Research Institute. This standard was drafted by Shenyang Rubber Shoes General Factory, Chongqing Lihua Rubber General Factory, Harbin Songjiang Rubber Factory, Weihai Rubber Factory, and Shanghai Greater China Rubber Factory No. 5.
The main drafters of this standard are Zhang Fucun and Li Hongkang. After the release and implementation of this standard, the original national standard GB318-83 "Cloth-covered Rubber Shoes" will be abolished. Standard fee control network-wx.br80s0.com Various industry standards for free download of industry information People's Republic of China
Chemical Industry Standard
HG/T2495-93
Chemical Industry Standard Editorial Department
(Standardization Research Institute of Ministry of Chemical Industry)
Postal Code: 100013
Standardization Research Institute of Ministry of Chemical Industry
Copyright reserved and no reproduction allowed
Format 880×12301/16 Printing Sheet%
Word Count 7000
First Edition in October 1993
First Printing in October 1993
Print Quantity 1-500
Standard Press vom.baboso.ccm
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