Publish Time: 2021-10-23 Origin: Site
There are many kinds of materials of shoes Sole in the market. Knowing the difference will help make a better decision while buying shoes.
PU is short for polyurethane. It is a kind of polymer material, made of A/B/C polyurethane foam, divided into two kinds of oil and water. PU is a new kind of organic polymer material, known as the "fifth plastic", mostly used to manufacture high-grade leather shoes, sports shoes, travel shoes, etc.
☆ Low density, soft texture, good elasticity, comfortable to wear
☆ Good oxidation resistance, excellent wear resistance, flexural resistance, high hardness
☆ Excellent shock absorption, anti-skid performance
☆ Good temperature resistance
☆ Good chemical resistance
☆ Environmental protection
☆ Strong water absorption
☆ easy burn-in
☆ easy to fracture
☆ Poor elongation
☆ not waterproof
☆ Perishable bottom
☆ Poor air permeability
The leather shoe sole has good air permeability. It can automatically release absorbed sweat to keep feet dry.
☆ No deformation
☆ Good elasticity
☆ Not easy fatigue
☆ breathable
☆ Absorb the moisture
☆ Expensive
Ethylene Vinyl Acetate copolymer is a polymer material. Often used for jogging, walking, casual shoes, foot training shoes.
☆ Lightweight
☆ Good elasticity
☆ Good flexibility
☆ Not easy to wrinkle
☆ Many color options
☆ Suitable for all kinds of climate
☆ High absorption rate
☆ Easy to be stained
MD is EVA two high-pressure molding products. MD sole must contain EVA. MD bottom is also called PHYLON bottom.MD=EVA+RB or EVA+RB+TPR and some shoes are RB+PU and so on.
☆ Lightweight
☆ Fine appearance
☆ Good softness
☆ Easy to clean
☆ Good hardness
☆ Not good for environmental protection
☆ Easy to wrinkle
☆ Easy to shrink at high temperature
☆ Poor durability
☆ Shock absorption will be reduced after a while
☆ Poor permeability
RB is short for rubber, including natural rubber and recycled rubber.
☆ Good wear resistance
☆ Skid resistance
☆ Elasticity
☆ Not easy to break
☆ Good softness
☆ Good elongation
☆ Stable shrinkage
☆ Good hardness
☆ Good bending
☆ Waterproof
☆ Heavy
☆ Not easy to corrosion
☆ Easy to puncture
☆ Air permeability and moisture absorption are not good
TPU is short for Thermoplastic Polyurethane, which is a linear polymer material formed by the common reaction of diisocyanate, macromolecule polyols, and chain extender. It is a new type of environmental protection material.
☆ excellent mechanical strength
☆ wear resistance
☆ oil resistance and flexure resistance
☆ good appearance, generous and high-grade
☆ Poor heat resistance, heat resistance, water resistance
☆ Poor compressibility
☆ Easy to turn the yellow appearance
☆ Easy to stick mold in processing
☆ Hard and heavy
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