Overview of the basic functions of anti-smash and anti-puncture safety shoes.
Anti-smash and anti-puncture safety shoes are a multifunctional safety shoes that can be applied in different harsh environments and can better protect the safety of the operator, both anti-smash to protect the toes and the sole of the foot from being pierced by sharp objects on the ground in the workplace. At the same time, the soles usually have functions such as anti-slip, wear-resistant, oil-resistant and pressure-reducing, etc. As a product that is mandatory for use by the state, there are also strict technical standards.
The anti-puncture Safety sheos protection shoes are installed with 0.05mm degreased stainless steel midsole plate on the sole to prevent iron nails and other sharp and hard objects from piercing the outsole of the shoes and hurting the soles of enterprise workers, with a puncture resistance of more than 1100 Newton, in accordance with the national standard ASTM F2412/2413-2011 I/75 C/75, which is extra strength. They are mainly used in mining, machinery, construction, metallurgy, logging, transportation and other industries.
Anti-bashing and anti-puncture safety shoes because of the heavier, the sole material added to the anti-puncture steel midsole plate, the comfort level is reduced, in order to reduce the user's work load, according to the anti-puncture safety shoes use environment needs to choose the appropriate foot protection supplies.
Special Note: We usually pair puncture-resistant safety shoes with both puncture-resistant and smash-resistant functions, but not with insulated functions, because insulated shoes are about the safety of workers' lives and the soles cannot be damaged. If the insulated shoe sole is broken it should be stopped immediately. In addition, attention should also be paid to waterproofing, water conducts electricity and there is danger in using them in an electrically charged environment.
Toe gasket resistance safety degree
People with potential toe injuries must wear protective footwear that provides adequate protection for the toes. All footwear must comply with ASTM F2412/2413-2011 I/75 C/75. CSA approved safety footwear must have an approved plate attached to the boot or meet the University of Toronto Protective Footwear Standards 1 to 6: December 2004 The University of Toronto Selection and Use Booklet states on pages 2 to 6 that the footwear protection standards: December 2004 for the selection and use of protective footwear must provide effective toe protection. There are two levels of toe gasket protection, depending on the level of protection provided.
Level I- withstands an impact of 125 joules (equivalent to a 50 pound object thrown 22 inches overhead).
Level II - Withstands an impact of 90 joules (equivalent to a 50 lb. object thrown 16 inches in the air).
Toe gasket impact resistant footwear must be worn when there is the potential for overhead throws, rolling, sharp objects, high heat items and cutting hazards. This can include workplaces where there is heavy material handling, use of heavy machinery or equipment, construction sites or machine stores.
Safety footwear must be worn in situations where a sharp object may penetrate the sole layer of the shoe and expose the foot to potential puncture hazards. All safety footwear must comply with CSA Safety Standard Z195-02. CSA approved safety footwear must have an approved plate piece attached to the boot or shoe. Puncture-resistant midsoles are generally tested to puncture-resistant product standards in major countries and regions of the world, including China, the European Union, and Canada, for example: CSA Z195-2 product certification in Canada and EN12568 five environmental puncture resistance tests in the European Union
The wearer must wear protective footwear with puncture resistance in situations where there is a risk of injury from sharp objects (such as nails, wire, large head nails, scrap metal or glass), high heat items and cuts.
Anti-bashing and anti-puncture safety shoes basic function testing
A. Puncture prevention test.
Install a pressure plate on the testing machine, the pressure plate is equipped with a test nail, the test nail for a truncated tip of the head, the hardness of the nail head should be greater than 60HRC. The sole specimen is placed on the chassis of the testing machine, the position can make the test nail through the outsole for puncture, the test nail to 10 mm/min ± 3 mm/min speed to puncture the sole, until penetration, record the maximum force required. Four points on each sole are selected for testing (at least one of which is at the heel), with each point no less than 30 mm apart and at a distance greater than 10 mm from the edge of the insole. soles with non-slip blocks should be punctured between the blocks. two of the four points should be tested at a distance of 10-15 mm from the edge line where the flute of the sole is planted. If humidity will have an effect on the result, the sole should be immersed in deionized water at plus 20℃±2℃ for 16±1h before the test.
Impact test with a steel impact hammer of specified weight, the height of the gap under the bun head when the bun head is impacted should be less than the specified value, and the bun head should not show any penetrating cracks in the direction of the test axis. It is worth noting that the weight of the impact hammer, specifications, the impact height and the construction of the test machine in the standards of various countries are different, the actual test should be distinguished.