For the labor insurance products market, any time is a peak season for purchasing, such as safety shoes, which are protective shoes that workers need to wear every day, and labor insurance materials that many companies need to stockpile all year round.
The biggest protection of labor insurance shoes for human feet comes from safety protection performance, followed by shock absorption. In the production process of labor insurance shoes, different shock absorbing materials can have different shock absorbing effects.
The insole is the first part that comes into contact with the foot, and is the first to absorb the energy of the body falling, which will directly affect the comfort of a pair of shoes.
The first is the nature of the insoles. Many insoles are made of softer foaming materials. The insoles are glued with shock-absorbing glue, which has good chemical stability, water resistance, weather aging resistance, non-corrosiveness, and light weight., has the advantages of better elasticity.
It is understood that some labor workers take about 20,000 steps per day, so the safety shoes are required to be very stable, so good cushioning performance is essential. Some manufacturers use molded midsoles when making safety shoes, so that the feet can step on the shoes properly, and the fibers along the circumference of the shoes can also provide support.
The midsole of the shoe is the bottom wrapped in the outsole of the shoe, instead of the overall rubber outsole as it looks on the outside, in fact, the inside of the rubber outsole is wrapped with the midsole of the shoe. This kind of midsole is also called MD. The midsole, which belongs to EVA once foamed, helps to disperse this impact.
The professional name of EVA is “ethylene-vinyl acetate copolymer”, which refers to the copolymerization of ethylene and vinyl acetate, and it is commonly called rubber foam material. It is currently the most widely used shock absorbing material, mainly used in the midsole part of the sole. EVA soles have good flexibility, resilience, not easy to wrinkle, good aging resistance, heat preservation and cold resistance and low temperature performance, and can still have good flexibility even below 0 ° C, good transparency and surface gloss Etc. To put it simply, it depends on the toughness of the sole. The EVA sole has good shockproof, anti-skid and cushioning properties, and has strong grip.
Next, let’s introduce the outsole.
Generally speaking, we use rubber and PU materials to make the outsole of shoes.Rubber material, rubber is selected as the shock absorbing material, and it is mainly used in the outsole. The foam rubber has good elasticity and is a shock-absorbing rubber used in the sole process. This shock-absorbing method is most widely used in sports shoes and labor insurance shoes.
The rubber sole has good physical properties, anti-skid performance, waterproof, and is not easy to break. It is a common sole for labor insurance shoes. Its disadvantage is that it is heavy, afraid of oil soaking, and has no light foot feel.The advantage of natural rubber is that it is very soft and has excellent elasticity. It can be used for various sports and plays a role in shock absorption, but the disadvantage is also obvious, that is, poor oil resistance, ozone aging resistance and thermal oxygen aging resistance.
PU bottom, the chemical name of PU is “polyurethane”, which is a new type of organic polymer material and is a common bottom type in labor insurance shoes.
PU bottoms are generally divided into oil-based and water-based, which have the advantages of good elasticity, flexibility, wear resistance, and anti-slip properties. They are comfortable and light to wear, and are not easy to open glue. Its disadvantage is that it is not easy to be exposed to the sun and has poor air permeability.
Novices can’t tell what is a PU sole. You can check whether there are bubbles on the surface of the sole, which is an important detection feature for it.Compared with ordinary rubber soles, polyurethane soles have the characteristics of light weight and good wear resistance. The polyurethane sole uses polyurethane resin as the main raw material, which solves the problems of domestic plastic soles and recycled rubber soles that are easy to break and rubber soles that are easy to peel off.
Sometimes, we also choose EVA as the sole:
the sole has high resilience and tensile strength, high toughness, good shock resistance, cushioning performance, heat insulation, heat preservation, cold protection and low temperature performance, can withstand severe cold and exposure, closed cell structure, Non-absorbent, moisture-proof, good water resistance, corrosion-resistant to oil, acid, alkali and other chemicals, antibacterial, non-toxic, tasteless, and pollution-free.
I will explain so much to you today, and I hope it can be helpful to you. If you still don’t understand anything about purchasing labor insurance shoes, please come to consult and leave a message to discuss together.
