first of all. Identification of upper materials for labor insurance shoe manufacturers: The common upper materials for safety shoes on the Chinese market include: suede leather, film leather, shredded cowhide, cowhide, etc. In recent years, in order to keep pace with the EU CE standard, there are also domestic Manufacturers began to import thickened buffalo leather that meets European standards. Since the appearance of the film leather material is very similar to that of cowhide, many consumers are unable to judge. Now we will compare and analyze the two materials.
Take a look: cowhide (the type of leather, in the leather products industry, it is a customary name for people to distinguish synthetic leather). The surface has obvious irregular patterns and natural pores. It is resistant to cold and folds, and has good breathability and perspiration performance; transfer film leather Collectively referred to as natural synthetic leather, it is an artificial surface layer pasted on the loose flesh surface fiber layer of the lower layer of natural leather. Its grain pattern is similar to that of natural leather, but it has no pores and feels hard, but it has good waterproof performance.
Second touch: the hand feels full and elastic, the leather with no cold feel to the touch is leather, and the hard and cold feel is mostly transferred film leather. 3. Observation from the cross section: There is no obvious film layer in the cross section of the dermis. If you scratch the base with your hands, you will find fluff and become longer and longer. This is an obvious manifestation of the fiber base (dermis base); It is made on the loose flesh surface fiber layer or fiber grinded under the natural leather, bonded by a high-pressure adhesive to form a sheet, and then pasted with an artificial surface layer. Scratch the surface layer with a knife. Some surface layers can be small. The pieces flake off.
2. Production process: The domestic production process of safety shoes is divided into: molding, injection, gluing and seam. Injection safety shoes are light, the sole and upper have high viscosity. The outsole is usually made of polyurethane material, which is wear-resistant and waterproof. Adhesive shoes are a traditional process with a long production history. Generally, the soles are made of rubber and other materials with shoe glue and Shoe upper bonding; the price of sewing the tire sole shoes and the molding process is relatively cheap, which is a low-end product, so I won’t introduce it here.
3. Shoe materials for safety shoes: to protect the toes, safety shoes need a steel toe cap, anti-puncture safety shoes need a steel bottom plate, anti-static shoes need anti-static agents and anti-static wires, etc., observe, it is necessary to conduct a protective performance test to understand whether it meets Whether the supplier’s certified product grade and the quality of shoe materials meet the requirements.
4. Product comparison: There are two methods for conventional comparison. One is the anatomical comparison of the cross-section of the finished shoe. After comparing the appearance and craftsmanship, cut the safety shoe longitudinally. After cutting, you can clearly observe the upper section, auxiliary material section, sole section, The steel toe, steel bottom plate and the internal structure and internal process of the shoe. It is worth mentioning that the density of the single-density sole section is the same, which is harder to press by hand; the upper and lower two layers can be observed in the section of the dual-density sole. The density is different. The upper layer has a low density and the lower layer has a high density. It is very elastic by hand; if the sole is two-color molding, but the cross-sectional density is the same, it also belongs to the single-density category. The second is to try on. Trying on can compare the comfort of safety shoes, and feel the comfort of shoes by walking, squatting, kicking, and stepping heavily.