As a traditional safety shoe material, rubber shoes are superior to PU soles in terms of wear resistance and high temperature resistance, and rubber wear resistance and anti-skid properties are also very good. Especially the special rubber for labor protection shoes has absolute advantages, but its disadvantage is relative comparison. bulky. Labor insurance shoes, safety shoes, and outdoor shoes are generally completed by hot pressing, and some are injected, foamed, and have different functions.
PU is a new type of material, also called polyurethane, which is light and easy to shape. The safety shoes made of this material are light and have good shock absorption effect, but they are not resistant to hydrolysis and the price is low. Generally, foam molding is a good choice for midsole. Since the soles of safety shoes are made of different materials, such as leather soles, rubber soles and polyurethane soles, different soles have different advantages and disadvantages. What are the advantages and disadvantages of rubber soles:
Rubber soles are formed by thermal compression and are divided into natural rubber and reclaimed rubber. In terms of weight, it is not resistant to oil. When molding the bottom, it must be roughened on the bonding surface. It is easy to shorten when heated, and the color is inconsistent.
Its advantages are: good wear resistance, non-slip, elastic, not easy to break, good softness, good elongation, stable shrinkage, good hardness, good flexibility, and waterproof. Disadvantages: heavier, easy to spit frost (a quality problem), not easy to corrode (environmental protection); not hard, easy to be penetrated; poor air permeability and moisture absorption, afraid of oil soaking, not suitable for contact with oil at car gas stations, etc. Place to wear.
Rubber foam: lighter than rubber soles, it has a rubbery smell. When pressed with your fingers, the surface rebound is more obvious than ordinary soles, and the wear resistance is poor.
High-pressure polyethylene rubber sole: The sole is made of high-pressure polyethylene and rubber as the main ingredient, and rubber and plastic are used together.
Raw rubber bottom: heavy, more expensive, not resistant to oil, heat, and easy to change color.