Thursday, 05 March 2015 13:59

TPU production and use

TPU production and use

Traditional TPU products are accomplished through the reactor. Because of its complex process, an area of large, serious pollution, has gradually sheet screw extruder and replaced by a twin screw extruder. Synthesis of polyurethane in the extruder or by reactive extrusion production of polyurethane elastomers, these reactions are by step-growth polymerization reaction mechanism of.
The reaction was often based on a melt extruder or liquid feed, chemical reactants molar ratio between the opposite for the production of high molecular weight polymers is very important. In mainland China and Taiwan markets, TPU maximum amount that the shoe aspects injection molding, and the German BASF and China Taiwan's main priority was to produce and suppliers. Taiwan Ure which has five factories, which TPU capacity ranks first in Asia.
Prior to the company's main European markets, but fought in mainland China, the market share is gradually increasing. It is reported that China gifted ready within five years to build three TPU plant, making a total capacity of more than 50,000 metric tons in 2008, ranking first in the world.
Published in Out soles technology

As a fourth generation following the rubber sole material, PVC, SBS after, TPU (thermoplastic polyurethane elastomer) has better flexibility, abrasion resistance, tear resistance and flexibility, a variety of demanding special shoes such as One of the preferred material sole soccer shoes, skate shoes, hiking shoes and the like.

Currently the material used for the production of sports shoes soles mainly PVC, PU, ​​EVE and TPU, which TPU due to outstanding performance and environmentally friendly concept, began to emerge. PVC prices low, but the temperature is low hardens easily fracture, high temperature Shiyou variable soft, and there is medical research shows that PVC will release harmful dioxins, the advanced countries such as NIKE major sporting goods manufacturers, have been gradually replace PVC with TPU and other materials;

PU material light weight, good heat resistance, abrasion resistance, long life, the price is low, but the high cost of investment project (machinery, molds and raw materials), finished it difficult to re-use ; EVE flexibility, good elasticity, excellent chemical resistance and color performance, but the production process is relatively complex, the use of limited range in the high-end athletic shoes. The TPU has strong wear resistance, tensile strength and elongation at break, good weather resistance, etc., although the presence of hardness, weight and price inadequate, but the whole, TPU application market more widely.

Published in About soles
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