1. Safety shoes, labor insurance shoes insole material classification: foam EVA, latex, silicone, ORTHOLITE foam and PU materials.
1> Foamed EVA: low cost, insole has no elasticity, easy to deform, softness, easy foot odor.
2> Latex insole: the cost is slightly higher than the foamed EVA. The insole is soft and elastic.
3> Silicone insole: the cost is slightly higher than the foamed EVA. The insole is generally soft, with a bit of hardness, good elasticity, and will not be deformed. It is easy to age and break after a period of use, and the sweat absorption performance is extremely poor.
4>ORTHOLITE foam insole: higher cost. The softness is good, the elasticity is general, the sweat absorption and deodorization performance is very good, the pressure is easy to be deformed, and the insole will be restored when it is not used.
5>PU insole: the highest cost. Good softness, good elasticity, good sweat absorption, not easy to deform, sports shock absorption performance is very good, and at the same time take into account other functions, is a comprehensive performance insole.
2. Safety shoes, labor insurance shoes insole performance softness and flexibility definition:
1> Softness refers to the ease with which the insole can be pressed up and down. It is the ease of rolling in the up and down direction, not the bending in the front and rear direction or the ease of curling.
The correct way: put an insole on your hand, use the thumb and forefinger of the other hand to clamp the heel of the insole, press hard, the easier it is to squat down, the better the softness, and vice versa! !
2> Elasticity refers to the speed of time to restore the original insole and the strength of compression resistance. The faster the insole returns to its original shape, the better the elasticity, the greater the pressure resistance, the stronger the elasticity! !
3. Safety shoes, labor insurance shoes insole thickness selection: the insole is not as thick as possible, the correct insole thickness depends on the size of the safety shoes.