Due to the diversity of TPE types, and the complexity of some TPE species blending system determines the uncertainty of TPE density, the specific gravity of the main TPE, briefly listed below.

　　TPE (SEBS, SBS base material class) is commonly known as TPE and TPR, specific gravity 0.6 ~ 2.0 . Among them, the foam class 0.6~0.8; super soft class 0.81~0.88; conventional class 0.9~1.3; high filling class 1.3~2.0.

　　TPE (polyolefin class) contains TPO,TPV. foam class 0.6~0.9; conventional class 0.9~1.1.

　　TPE (thermoplastic polyurethane class), that is, TPU. foaming class 0.7~1.0; conventional class 1.05~1.25.

　　TPE (sea cui material), that is, TPEE, specific gravity in 1.1 ~ 1.2.

　　TPE(Polyamide), TPAE, specific gravity is 0.9~1.2.

　　For more detailed information on the physical properties of TPE, please contact.

　　At present, the elastomeric raw materials used for shoe soles are TPE/TPR/TPU/EVA/PVC/rubber, etc. The soles prepared by them have the following characteristics.

　　TPU is the lightest and most wear-resistant, but of course the most expensive, PU soles are very recognizable, light in the hand, and the holes on the back of the soles are round.

　　PVC soles are heavier in the hand than TPE/TPR ones.

　　TPE/TPR material sole elasticity than PVC, the sole firm hold, natural fall down, if you can bounce up is TPR.

　　PVC soles are cheaper than TPE/TPR soles, but the quality is not good, especially in winter, it is easy to break the bottom.

　　PVC material soles have a characteristic that there is no injection holes, and smell with the nose, there is a smell. If you leave it for a long time, it will also grow white stuff.

　　Weight: RUBBER (rubber) is the heaviest, PU, EVA is the lightest.

　　Material: PU expensive, EVA, TPR moderate, PVC cheapest.

　　Process: TPE/TPR is a molding, and PVC to process, ABS is generally the material for high-heeled shoes, expensive and hard.

　　Application: PVC is mostly used in the lining or non-weight bearing parts, or the manufacture of children's shoes; PU leather can be applied to the fabric or weight bearing parts of shoes. For bags, PVC leather is used more often. This is because the items in the bag, unlike the feet in the shoes, do not emit heat; they do not have to bear the weight of the individual.

　　PU, PVC is relatively easy to distinguish the way, from the edges of the PU backing fabric is much thicker than PVC, there is also a difference in the feel, PU feels a little softer; PVC feels harder; you can also use fire to burn, the taste of PU is much lighter than the taste of PVC.