Certification body testing helps manufacturers produce quality safety shoes

Safety shoes are collectively referred to as safety footwear and protective footwear, and generally refer to footwear worn in different workplaces to protect the feet and legs from foreseeable injuries. According to the function, safety shoes can be divided into toe protection safety shoes, anti-puncture safety shoes, anti-static safety shoes, oil safety shoes, non-slip safety shoes, acid and alkali safety shoes, high pressure safety shoes, wear-resistant safety shoes, and cold protection Safety shoes, waterproof safety shoes and so on.
Safety shoes are high-tech and high value-added footwear products, and have important life safety protection functions. The production process requires high requirements for raw materials, machinery and equipment. For such products, if manufacturers want to sell products to foreign markets, the certification of the third-party certification bodies is particularly important. The certification marks from these authorities can be regarded as a guarantee for consumers.
Safety shoes test certification requirements
In terms of design, the most important aspect of safety shoes is the protection function, including toe protection, puncture protection, electric shock protection, anti-static protection, shin bone protection, and electric saw protection. At the same time, it should be noted that safety shoes with puncture-proof protection, shin bone protection, chainsaw protection and electric shock protection must have toe protection at the same time; and safety shoes with anti-static protection or anti-skid protection function can not have toe protection function.
What needs to be mentioned here is that the right foot of each pair of shoes must be permanently marked with the following information in a conspicuous position: manufacturer's name, trade name or applicant's CSA contract number, date of manufacture (specific year/month or date code), model number
The test object of the safety shoes is a brand new safety shoe that has been produced for more than 14 days. Before testing, store it in a room temperature of 20±2°C and a humidity of 50±5% for at least 40 hours. The test needs to cover the entire shoe size range. Independent third-party testing and certification agencies, such as CSA International, will test the samples in various aspects, such as the toe protection box material needs to ensure that the metal protection box will not be rusted, and the composite protection box needs to be tested by Fourier infrared spectroscopy, etc. The following is a brief description of the impact test, the shock protection test, and the anti-static protection test.
Impact Test: Insole Test Required
Test instruments: impact weight 22.7k, diameter 25±0.5mm cylindrical, length greater than 50mm less than 75mm.
Testing requirements:
One-stage protection impact energy 125 joules, impact speed 3.32m/s
One-level protection impact energy 90 joules, impact speed 2.82m/s
Test steps:
· Take plasticine into a cylindrical shape with a diameter of 25mm and cut according to the height of the sample space, and place the plasticine in the protection box according to the standard illustration;
· Set the drop height of the impact head of the test instrument to obtain relative protection level impact energy and release the impact head;
• Remove the plasticine and measure the remaining height.
Test note:
· Test at least half of the samples after storage at –18° ± 2°C;
· The sample is stored at a low temperature for at least 12 hours. The sample is taken from the refrigerator and subjected to an impact test and is to be completed within 2 minutes.
Anti-shock protection test: If the insole can be removed, it is necessary to take the insole after the test
Test requirements: Leakage current does not exceed 1mA.
Test Methods:
· Add a small steel ball (3mm in diameter) to the shoe, covering a height of at least 30mm;
· Pressurize at 1 kV/s, add 0 to 18kV and hold for 1 minute.
Anti-static protection test:
Test instrument: Insulation resistance meter reading range 0.1M - 1000M Ω; 200 mm × 380 mm × 13 mm metal tray fixed on metal base plate 380 mm × 380 mm, metal floor fixed with 460 mm × 460 mm wooden base .
Test requirements: Insulation resistance value between 1 trillion and 100 megohms.
Test steps:
· 1 wire of Megohmmeter connected with metal tray;
· Water is added to the metal tray, covering the height of 3mm;
· Put a small steel ball into the sample shoe covering a height of 30mm;
· Mega-European express another wire to connect the small steel ball in the sample shoe;
· One DC 50v power supply as output, 5mA is the maximum output current;
· Test results should be between 1 MΩ and 100 MΩ.
North American Market Safety Shoes Certification
Taking the North American market as an example, the Canadian standard applied to safety footwear is different from the US standard, namely CAN/CSA-Z195 and ASTM F2413.
The CAN/CSA-Z195 is Canada's national standard for safety footwear. The types of protection it provides include toe protection, anti-puncture protection for the sole, resistance to electric shock, and anti-static protection.
CSA International can test and certify safety shoe products according to the CAN/CSA Z195 standard, and certified products can use authoritative certification marks.
In the United States, CSA International tests and certifies safety shoes for performance and safety in accordance with ASTM F2413. Similar to CSA Z195, the protection of the standard mainly involves toe protection, protection against electric shock, anti-static protection, puncture protection of the sole, protection of the sacrum, etc. In addition, the ASTM F2413 standard also involves another test of toe protection - Compression test.
CSA International's ASTM certification mark appears on any of a pair of shoes and is attached to the inside or outside of the tongue of any shoe.
Protection classifications and signs:
One or more markers may be used on the tongue or outside of the right foot depending on the type of protection of the safety shoe.

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