What are the methods of differentiating safety shoes? What are the safety footwear indicators?

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. Safety shoes are high-tech and high value-added footwear products. The production process of safety shoes is very demanding on raw materials, auxiliary materials, chemical materials, and mechanical equipment. At present, many shoes with a certain scale and grade are produced in China. The company has turned its sights on safety footwear, a market area that was previously occupied by developed countries.

There are many safety shoe manufacturers on the market today, and there are many varieties, but the quality is very different. How to correctly choose safety shoe manufacturers and identify the quality of the quality, is not misled by the salesperson language or written description?

First, production companies must hold two certificates

Safety shoes belong to special labor protection articles, and the country implements a permit system and a safety sign management system. The state has strict mandatory requirements for the production and purchase of special labor protection shoes. According to the Decree No. 440 of the State Council of the People's Republic of China and the No. 1 Decree of the State Administration of Work Safety, labor safety footwear manufacturers must hold the following two certificates to allow production and sales: 1. National Industry issued by the General Administration of Quality, Quality, Inspection and Quarantine Product Production Permit "2. Certificate of "Special Labor Protection Articles Safety Sign" issued by the State Administration of Work Safety. The purchasing unit must purchase the products of the production and business units that have the above two certificates.
The enterprise that falsifies, alters, fraudulently uses licenses or produces without a license shall be subject to economic penalties and bear corresponding legal liabilities; if the procuring unit issues products without a certificate or forged certificates, it shall punish the responsible persons according to the "Law of the People's Republic of China on Administrative Licensing Law." And punish them for criminal responsibility for causing security accidents. Users can log in or search for certified company materials before purchasing special labor products.

Second, on-site inspection

This step is necessary for the bulk purchase of safety shoes. Different companies and different equipments produce products of the same name, and there are certain differences in quality. The company's production site can be informed of the company's scale and strength, management level, technical equipment (production and testing equipment), and development capabilities are consistent with the company's promotional materials or sales staff oral description.

Third, the safety shoes (labor safety shoes) quality identification

1. Identification of shoe upper materials: Nowadays, safety shoe upper materials on the Chinese market are commonly found in: fleece leather, transfer film leather, crushed cowhide, and leather. In recent years, in order to synchronize with the EU CE standards, domestic manufacturers have also started importing. Abroad conforms to the European standard thick buffalo leather.

Because the appearance of the transfer film leather material is very similar to that of cowhide leather, many consumers are unable to make a judgment. The two materials are now compared and analyzed:

(A) Look: Leather (kind of leather, in the leather products industry, people distinguish between synthetic leather and a custom name) The surface has obvious irregular patterns and natural pores, cold-resistant folding, breathable wicking performance; Membrane leather is known as natural synthetic leather. It is an artificial surface layer on the loose flesh layer of the lower layer of natural leather. Its grain pattern is similar to that of natural leather, but it has no pores and hard feeling, but it has good waterproof performance.

(B) touch: feel full, full of elasticity, hand touch no cold feeling for the dermis, feel hard, there is a cool sense of the majority of shift leather.

(C) Cross-sectional observation: There is no obvious thin film layer on the dermis section. Scratching the base of the dermis will reveal that there are villous and longer and longer and longer. This is the most obvious performance of the fibrous base (dermis base); Leather is loosen on the flesh layer of the lower layer of the natural leather or the fibers are ground. After being glued with high-pressure adhesive to form a sheet, the artificial surface layer is pasted. The surface layer is scratched with the knife edge, and some surfaces can be The entire small piece peeled off.

2, production process: domestic safety shoes production process points: molding, injection, adhesive, seams. Injection type safety shoes are light, the soles and uppers have high viscosity, and the outer soles are usually made of polyurethane materials, which are wear-resistant and waterproof. Adhesive shoes are a traditional process with a long production history. General shoe soles use rubber and other materials for shoe glue. Adhesion of the upper; the price of sewn-soled shoes and moulding technology is cheaper and is a low-grade product. We will not introduce it here.

3, process equipment: This section focuses on the production of injection safety shoes production equipment. Internationally recognized as the most advanced production equipment for safety shoes, Germany's DESMA Lianban Injection Shoe Machine and Italy's Manchu Lianban Injection Shoe Machine, all of which are fully controlled by the computer, among which DESMA and Bayer Technology Materials' ultra-low-density foaming The technology marriage makes the scientific and technological gold content of DESMA equipment reach a brand-new height that the global similar equipment can't reach. The buffering performance, absorbing energy, anti-seismic performance, and adhesive fastness always go at the forefront of technology. However, due to the high price of such products, there are still a few companies in China that are taking the lead in using high-tech products brought by technology equipment. The domestic disc type injection shoe machine is widely used in most safety shoe manufacturers due to its low price, convenient maintenance, and fast delivery speed. The product quality is generally controlled by the operating technicians, and its production cost is far lower than that of imported equipment.

4. Shoes for safety shoes: To protect the toe safety shoes requires steel toe caps, puncture-proof safety shoes require steel floor, anti-static shoes need anti-static agent and anti-static wire, etc. Observe, it is necessary to carry out protective performance test to understand whether The supplier has obtained the product grade and the shoe material quality meets the requirements.

5, product comparison: conventional comparison is divided into 2 ways, one for finished shoe cross-section anatomy comparison, appearance and craft comparison, the safety shoes longitudinal cut, after cutting can be clearly observed to help surface section, accessories section, sole cross section, The internal structure and internal process of the steel head, steel bottom plate and shoes, it is worth mentioning here is that the density of single-density sole cross-section is the same, by hand relatively hard; double-density sole cross-section can be observed clearly up and down two layers Its density is not the same, the upper density is low, the lower density, hand elasticity is good; if the sole is a two-color molding, but the same cross-sectional density, but also belong to the type of single density. The second is to try on, try to compare the comfort of the safety shoes, feel the comfort of the shoes by walking, squatting, kicking, heavy stepping and other movements.

Safety shoes standard

The European Standard EN 345 ​​“Special Safety, Protection and Work Shoes” is a European Standard developed by CEN/TC61 “Protective Products for Feet and Legs” and its secretariat is BSI. The standard specifies the structural design and performance indicators of the safety footwear, such as the pattern design, the entire shoe, the upper, the shoe, the tongue, the insole, and the outsole. The test methods of each item specified in the standard are similar to other similar standards. The method principles are also generally applicable to most safety shoes. The main indicators are:

Safety shoes parameters

China Labor Insurance Network