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Standard international standards for safety footwear

Safety shoes are the general designation of safety shoes and protective shoes. They are generally used in different workplaces to protect the feet and legs from foreseeable injury. Safety shoes belong to high-tech and high value-added footwear products. The production process of safety shoes requires high raw materials, accessories, chemicals, mechanical equipment and so on. At present, many domestic shoemaking enterprises with a certain scale and grade have put their eyes on safety shoes, which were previously occupied by developed countries. Field. Xiao Bian has collected some international standards on safety shoes, and I believe that interested friends will like them.

1, European standard EN344:1997 "special safety, protection and work shoes".

The European standard was developed by the CEN/TC61 Technical Committee on Foot and Leg Protective Products, with BSI as its secretariat.

The standard stipulates the style design, the whole shoe, the upper, the lining, the tongue, the inner sole and the outer sole of the safety shoes. The test methods specified in the standard are similar to those of other similar standards, and the principle of the method is generally applicable to most safety shoes.

A. The impact resistance of Baotou is tested with a steel impact hammer of specified weight. The clearance height under the Baotou should be less than the specified value when the Baotou is impacted, and no penetrating cracks should appear in the direction of the test axis. It is noteworthy that the weight, specifications, impact height and the structure of the test machine of the impact hammer are different from each other in the national standards, which should be distinguished in the actual test.

B. The piercing resistance testing machine is equipped with a pressure plate and a test nail on the pressure plate. The test nail is a cutting-off tip. The hardness of the nail head should be greater than 60HRC. Placing the sole sample on the chassis of the testing machine, the position allows the test nail to penetrate through the outer sole. The test nail penetrates the sole at a speed of 10 mm/min (+3 mm/min) until it penetrates, recording the maximum force required. Each shoe sole was tested at four points (at least one of which was on the heel). The distance between each point was not less than 30 mm, and the distance from the edge of the inner sole was more than 10 mm. The bottom of the anti slide block should be punctured between blocks. The 2 points in the 4 points should be tested within the distance 10-15mm from the edge line of the planting floor. If humidity affects the results, the sole should be immersed in deionized water at 20 (+) 2 (+) for 16 (+) 1 h) before testing.

C. Electrical properties of conductive and antistatic shoes. After adjustment in dry and humid atmosphere, clean steel balls are filled into the shoe and placed on a metal probe device. Resistance between the first two probes and the third one is measured using a specified resistance tester. Generally speaking, the resistance of conductive shoes should not be greater than l00K ohm; the resistance of antistatic shoes should be between 100K ohm and 100M ohm.

D. Insulation performance to shoe as a sample, the thermocouple installed in the center of the inner sole connection area, and steel ball filled in the shoe. Adjust the temperature of the sand bath pot to 150 5, put the shoe sample on it, make the sand touch the outer sole of the shoes, use the temperature measuring device connected with the thermocouple to measure the temperature of the inner sole and the corresponding time, and give the curve of temperature increase. The temperature increased from the sample placed to the sand bath after 30min is calculated. The general insulation shoes require that the temperature increment of the inner surface is less than 22 degrees C.

 

E. The maximum compression load of the energy absorption tester for the heel part is 6000N, equipped with a device for recording load/deformation characteristics. Put the heel shoe on a steel plate and place the test punch in the center of the heel part by the insole. Load at the speed of 10mm/min 3mm/min. The load / compression curve is drawn, and the absorbed energy E is calculated, expressed in Joule.

F. Requirements for non-skid outsole The standard specifies the testing of the anti-skid coefficient of the sole, but specifies the design and specifications of the anti-skid block, such as the thickness of the sole, the height of the anti-skid block, and the distance from the edge of the sole.

2, standard: EN345-1 ANSI-Z41 USA China An1

Functions: anti-impact, anti-puncture, anti-static, anti-water splashing, anti-skid and oil resistance, acid and alkali resistance, high temperature resistance, wear resistance, shock absorption and odor prevention.

Vamp: imported smooth leather, comfortable and breathable, waterproof and wearable.

Inside: gray Stella + moisture permeable cloth + absorbent cotton, disinfection and bacteria control, water absorption sweat.

Insole: foaming PU, anti static, rebound good, compression resistant, breathable strong deodorant function.

Sole: two-color double-density PU / TPU joint injection molding, anti-skid waterproof sole can cushion pressure, comfortable, anti-skid, and super wear resistance.

Steel head: European (CE) China An1 standard, can withstand 200 Joule impact force (23KG * 900mm > 15mm) or withstand 15KN static pressure.

3. Canadian working safety shoes standard

This standard is based on the Canadian Standards Association (CSA) standard Z195-02: "Protective Shoes" and Z195.1-02 "Guide to Selection, Care and Use of Protective Shoes".

Range:

Potential foot injuries that may occur during the operation or in the University of Toronto workshop (Note: In this standard, "workers" include medical staff, staff, international students and tourists).


 

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