MD, EVA, PU, PVC, TPU, DPU

RB, PU, PVC, TPU, TPR, TR, EVA, MD, DPU

Dpu is a kind of wear-resistant, good toughness of Engineering Plastics , no more than Eva or rubber bottom or the bottom of the tendon, but its quality is lighter than the above, but easy to puncture broken not easy to climb

1. First say what is the Md:model or Phylon dragon, collectively

2. So what is Phylon: (commonly known as Flying Dragon) is a material for the sole of the general footwear used in the midsole, with the heating compression of EVA foam made of mixed substances. (belongs to Eva two times high pressure molded product) characteristic light, the elasticity and the aseismic performance is good, the hardness is controlled by the foaming temperature.

3. So what is Eva:ethylene Vinyl acetate-vinyl acetate. Lightweight and resilient chemical compounds. outsole material. More and RB marriage betrayed! Oh. the price depends on the amount of material. plus the combination of manual fees, glue fees, almost 20 Mao. composites are also used in it, called foaming. prices are negligible. But the cost of factory accounting will certainly be added.

therefore: The MD sole inside must contain EVA,MD bottom also is called Phylon bottom. such as MD=EVA+RB or EVA+RB+TPR and some shoes are rb+pu and so on.
RB,PU,PVC,TPU,TPR,TR
1. Rb:rubber, that is, rubber , TPU is mostly used on the soles, especially on running shoes. can also be used in the help surface accessories. the price is more expensive. TPU is divided into natural and synthetic rubber, natural rubber mainly from the three-leaf rubber tree, synthetic rubber is synthesized by the method, the use of different raw materials (monomers) to synthesize different types of rubber, butadiene and SBR for the largest production of general synthetic rubber. RB Sole has good abrasion resistance, stable shrinkage and excellent bending, but the material is heavy and is generally used for outsole.

2. Pu:polyurethane, for polymer polyurethane composite material , PU is leather material. Too many too many kinds. help surface material. on the yards to sell, there are expensive and cheap! basic NOT expensive! There are also pu bottoms. The Foreign trade list is seldom used at this end. Pu is based on foam rubber of large-density durable materials, high density, hardness, wear-resistant, good elasticity, but strong water absorption, easy to break, easy to yellowing. Pu is often used in basketball, tennis shoes midsole or rear palm midsole, can also be directly used in casual shoes outsole.

3. Pvc:polyvinylchloride, polyvinyl chloride, is a widely used synthetic material in the world today. PVC is also a leather material. cheap goods, but there are also high-end. also have PVC bottom, cheap goods. "Rotten shoes" often PVC material. Most of the cheaper, oil-resistant, wear-resistant, good insulation performance, but poor anti-slip performance, not cold, non-folding, poor breathability.

4. Tpu:thermoplastic Polyurethane, thermoplastic polyurethane elastomer , is a linear polymer material. The advantages of TPU are good elasticity, but the material weight, shock absorption capacity is poor. often used in jogging, walking, casual shoes midsole.

5. Tpr:thermoplastic Rubber, thermoplastic elastomer, also known as thermoplastic rubber. TPR outsole name. Unlike RB, it smells better. smell it with your nose. Price is more than RB, almost. sometimes high RB5 hairs, sometimes low RB5 hairs. Both the high strength of rubber, high resilience, and can be injection molding, with environmental protection non-toxic, a wide range of hardness, good coloring, soft touch, anti-fatigue, good temperature resistance, excellent processing performance and other multiple characteristics. It can be molded two times or individually, but with poor abrasion resistance.

6. TR:TPE and RB synthetic materials, with a variety of appearance, feel good, bright color, smooth finish, high technical content characteristics, and can be 100% recycled, is environmentally friendly soles materials.

identification and characteristics of material soles:
about the recognition of pu,pvc,tpr,rubber and so on!  
Pu is the lightest and most wearable .
PU material soles are very good, take in hand is very light, the back of the soles of the hole are round.  
The sole of PVC material is heavier than TPR's in hand.  
the sole elasticity of TPR material is better than that of PVC, holding the sole firmly, naturally falling down, if it can be played, it is TPR.
the sole of PVC material is cheaper than TPR, but the quality is not good, especially in winter, it is easy to break the bottom.  
PVC material soles have a feature is that there is no injection hole, but also useful nose to smell words, there is taste. It will also grow white for long periods of time.
the soles of the TR have a bright surface. More than the general TPR soles. TR has more injection holes than TPR. The injection hole is very special.  
Weight: RUBBER (rubber) heaviest, Pu,eva lightest,
material: PU expensive, EVA,TPR moderate, PVC cheapest,
process: TPR is made to be a molding, and PVC to be processed, ABS generally for high-heeled materials, expensive and hard,
Application: PVC is used in the lining or non-weight parts, or the manufacture of children's shoes, PU leather can be applied to footwear fabrics or weight-bearing parts. in the bag aspect, the more suitable is the PVC leather. This is because the items in the bag are different from the feet that are worn in the shoes and do not emit heat;

PU, PVC, the difference between the way is easier, from the corner to see Pu bottom cloth more than PVC thickness, feel also has a difference, pu feel soft some, pvc feel more hard, can also use fire to burn, PU flavor than PVC taste to be much lighter.

MD, EVA, PU, PVC, TPU, DPU