Technical requirements for insulated shoes
Insulation shoes technical requirements:
First, the general requirements 1, the structure soles and heels should not have metal hooks and other components. The anti-smashing type of insulated inner insole shall be surface-insulated when it is made of metal material, and shall not be movable when it is integrated with the shoe. The bottom joint should not be threaded with upper and lower threading and can be seamed sideways.
2, shoe size shoe size settings should comply with the provisions of GB/T 3293.1.
3, uppers 1 size of the upper: size (h) should meet the minimum requirements of the following table: Shoe number Low help High waist Half cylinder High tube 230 and below <100 >100 ≥160 ≥250 235~240 <103 >103 ≥165 ≥255 245-250 <106 >106 ≥170 ≥265 255~260 <109 >109 ≥175 ≥275 265-270 <113 >113 ≥180 ≥285 275~280 <117 >117 ≥185 ≥295
2 upper thickness: should meet the requirements of the following table: Material category thickness leather ≥1.2 rubber ≥1.5 plastic ≥1.0 canvas ≥0.8
3 leather tear strength ≥ 60N / mm2.
4 fabric tear strength: warp direction ≥ 980N, latitude ≥ 490N.
5 tensile properties: should meet the requirements of the following table: Material category Tensile properties Minimum requirements Leather Tensile Strength 15N/mm2 rubber Tensile Strength ≥13MPa Elongation at break ≥450% plastic Elongation at break ≥250%
6 upper and outer strip adhesion strength: should not be less than 2.0kN / m.
7 Upper and fabric adhesion strength: should not exceed 0.6kN/m.
4, outsole 1 outsole should have a non-slip pattern.
2 Outsole thickness a. The thickness of the outsole with anti-slip pattern is not less than 4mm (without pattern).
b. When the pattern cannot be measured, the thickness of any place other than the waist is not less than 6mm.
3 Insulation shoes wear resistance Insulation shoes Outsole wear length should be no more than 10mm; Insulation cloth shoes wear reduction is not more than 1.4cm315kV and the wear reduction of insulation rubber boots is not more than 1.0cm3; 20kv and above insulation rubber boots wear The reduction is not more than 1.9cm3.
4 folding performance For non-leather outsole requires continuous bending around 40,000 times, there are pre-cutting mouth 5mm no more than 12mm or no pre-cutting mouth, 50,000 times without breaking.
5, into shoes 1 appearance Insulation shoes: the appearance quality of insulation shoes made by various processes should meet the requirements of QB 1002, QB 1003 and QB 1005 respectively.
Insulated cloth rubber shoes: should meet the requirements of HG/T 2495.
Insulating rubber face rubber boots: should meet the requirements of HG 2401.
2 Water permeability of insulating shoes When insulating rubber boots and polymeric material boots are tested according to the test method of this standard, there shall be no water seepage in the bottom and bottom.
3 Peel strength The peel strength of the insulated shoes should be not less than 70 N/cm.
Second, the electrical performance requirements of insulated shoes 1, insulated leather shoes and insulating cloth shoes: When the leakage current is 0.3mA / kV, should meet the requirements of the following table: project name Factory inspection Preventive test leather shoes Cloth rubber shoes leather shoes Cloth rubber sole Test voltage (power frequency), kV 6 5 15 5 13.52 Leakage current, mA ≤ 1.8 1.5 4.5 1.5 1.1 3.6 Test time, min 1
2. Insulating rubber boots and insulating shoes with polymeric materials: When the leakage current is 0.4mA/kV, the following requirements should be met: project name Factory inspection Preventive test Test voltage (power frequency), kV 6 10 15 20 30 4.5 8 12 15 25 Leakage current, mA ≤ 2.4 4 6 8 10 1.8 3.2 4.8 6 10 Test time, min 1
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