Shoe Sole Materials

We have been discussing a lot about shoes, and Materials and Leathers and kind of leathers, but seldom have we seen people discussing about soles. I believe this is one important aspect of shoes, we just overlook them. The question is how they are made, what are the stuffs that go in making of shoe soles,, what kind of sole does an athletic shoe has which formal shoes don’t. Why high heel shoes are preferred in some shoes and in some not. Knowing the various kind of soles used will help you when it comes time to repair the shoes.
Sport Shoe Sole Requirements
Sports shoes are meant to give comfort and durability for high intensity works. Reasons why sports shoe soles are constructed lighter to provide elasticity, resistance and tolerance than conventional rubber soles. Sport shoes have been made by fitting the outsole and midsole layers by fusing a mold that results in one piece. Materials shouldn’t be very soft and sloppy as the force might deform curves.
Good Choice for Shoe Sole
Polyurethane is preferred sole material, because it consist numerous tiny bubbles that provide durability and good shock bastion to the feet. By varying the densities of the polyurethane, density of the air bubbles could be controlled and varied.
Another Feature
Another very popular material for soles is dual density polyurethane, which combines different combination and densities of polyurethane, with the toughness type on the outside and softer version of the soles inside to provide more cushion to inner soles, helping in more shock absorption and durability of shoes.
Considerations
Leather soles do not wear as well as shoes that have rubber compound soles nor do they provide good shock absorption or slip resistance.

Rubber
Rubber soles could be one other option than polyurethane. Rubber soles are quite good in absorbing shock and providing better gripping in the meantime. Thermo plastic rubber soles are made by molding and compounding rubber granules with plastic like compounds which provides durability and comfort of both rubber and plastic.
Latex
An old-fashioned material called latex rubber provides great surface grip and shock absorption, as well as bounce and flexibility.
PVC or nitrol polyvinyl chloride soles can be sticky when it's hot. However, this type of sole is durable.
Molded Soles
Molded soles are one more thing popular mainly for dress shoes, casual wear shoes or Hiking boots. Molded soles are combination of rubber and other materials. Rubber soles are very popular choice for beach wear shoes, sandals, shower slipper and flat soled orthopedic shoes, because they provide better grip, and comfort to the feet.
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