Orthopedic EVA insole
Orthopedic EVA insole is a kind of insole made of EVA, which is widely used in the shoemaking industry and insole Market. orthopedic EVA insole is usually made of EVA as the main material of insole, combined with fabric, leather and other fabrics. EVA is a kind of ethylene vinyl acetate copolymer, which is made by copolymerization of ethylene (E) and vinyl acetate (VA). Its English name is ethylene vinyl acetate, abbreviated as EVA. Generally, the content of vinyl acetate (VA) is 5% - 40%. Compared with polyethylene, EVA reduces the crystallinity, improves the flexibility, impact resistance, filler solubility and thermal sealing performance due to the introduction of vinyl acetate monomer in the molecular chain. Generally speaking, the performance of EVA resin mainly depends on the content of vinyl acetate on the molecular chain. The higher the content of VA content, the higher the transparency, softness and tenacity.
When choosing orthopedic EVA insole, it must be based on the characteristics of your feet. Generally, it is mainly used for shoes with too large size, hard sole, foot pain when walking and shoes not warm in winter. Orthopedic EVA insole is a kind of insole with therapeutic purpose, which is mainly designed and manufactured for people with foot disease or other diseases of the body, such as metatarsal pain, flatfoot, heel pain, etc. The main manifestation of metatarsal pain is forefoot pain. It is suitable to use EVA made half pad under the forefoot. EVA products have good elasticity, can play a supporting role, make the foot pressure move backward, buffer the pressure of the forefoot, reduce local pain. People with flatfoot should choose special flatfoot insoles under the guidance of doctors. Heel pad is suitable for people with heel pain.
In addition, flat shoes should be padded with a heel pad, and high-heeled shoes can be padded with a half pad to reduce the local pain of the foot, but it is better to make it more comfortable according to the shoe type.
1: The advantages of orthopedic EVA insole are:
EVA resin belongs to the product of blending foaming. It has good softness, elasticity, chemical corrosion resistance and other properties, so it has a wide range of applications, such as the soles of low-grade tourist shoes, mountaineering shoes, slippers, sandals and so on.
2: The disadvantages of orthopedic EVA insole are:
The biggest disadvantage of orthopedic EVA insole is that the material is airtight and easy to cause foot odor. At present, CPU insoles and injection molded latex insoles are used to replace EVA insoles for high-end shoes.
Orthopedic EVA insole has various colors and hardness, water resistance: closed bubble structure, no water absorption, moisture-proof, good water resistance. Corrosion resistance: resistant to seawater, oil, acid, alkali and other chemicals, antibacterial, non-toxic, tasteless, and pollution-free. Processability: no joint, and easy for hot pressing, cutting, gluing, laminating and other processing. Anti vibration: high elasticity and tension resistance, strong toughness, good shock / buffer performance. Thermal insulation: excellent heat insulation, cold insulation and low temperature return performance, can withstand severe cold and exposure. Sound insulation: airtight bubble, sound insulation effect should be good.