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TPU film used in medical, textile and shoe materials
Jan 14 , 2022
TPU films are mainly processed by extrusion, calendering and blow molding. TPU films with thicknesses ranging from several microns to several millimeters. TPU is a block copolymer consisting of alternating soft and hard segment sequences. It can adjust the ratio of soft and hard segments to achieve various hardness and elasticity changing. Therefore, polyurethane film has excellent tension strengt...
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2021 TPU price analysis and 2022 TPU price trending
Feb 18 , 2022
2021 will be an extraordinary year for the TPU industry. The TPU market price greatly raised as the skyrocketing price of raw materials and reaching the highest level in recent years. As below TPU market price chart of 2019-2021 show, the price fluctuation of TPU in 2021 is much larger than that in 2019 and 2020. At the beginning of 2021, with the large-scale implementation of the plastic restrict...
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what causes delamination in injection molding of tpu tpe compound
Feb 25 , 2022
Delamination is a injection products defect with the surface layers of a molded part peeled off which is also appear as fish-scaling. It may also be called lamination or layering. There are several reasons that cause the problem. It may be caused by material, processing, equipment and tooling. From a material standpoint, TPU material tend to be hygroscopic and moisture can hydrolyze TPU resins and...
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What can polyester polyol influence on physical properties of TPU
Mar 04 , 2022
Polyurethane is a general term for macromolecular compounds containing repeating carbamate groups (-NHCOO-) on the main chain. It is a polymer made from many kind of raw materials. By changing the type of polyurethane resin raw materials and the composition of the formula, the polyurethane resin properties can be greatly changed. The upstream raw materials of polyurethane include isoflurane (such ...
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Tips for defect-free injection molding of TPU
Mar 11 , 2022
Defect Remdedies Weld lines 1. Increase injection pressure 2. Increasement temperature or nozzle temperature 3. Increase sprue cross-sections or change it’s position 4. Optimize mold venting Fractures 1. Melt temperature is too low or too high 2. Reduce the proportion of recycled materials 3. Check material drying 4. Increase spruecross-s...
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Tips for defect-free extrusion of TPU
Mar 18 , 2022
Tips for defect-free extrusion of TPU Defect Remdedies Wrinkling 1. Increase die temperature and processing temperature 2. Reduce cooling water temperature 3. Check damage or impurities in the die weld lines 1. Increase Processing temperature 2. Increase Inner pressure of die head 3. Adjust Machine head position and temperature 4. Fully dry material Poor&nbs...
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What TPU test pieces consist of and what are they used for
May 13 , 2022
A TPU physical properties test pieces consist of abrasion test particles, crescent, dog bone, test coupons. Different part be used to do different properties test. The main physical properties of TPU are: hardness, tensile strength, 100% modulus, elongation at break, tear strength, compression set, resilience, abrasion, melt index, yellowing resistance, high/low temperature resistance, hydrolysis,...
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Why TPU Elastomer is an environmentally friendly plastic material
May 20 , 2022
Thermoplastic polyurethane TPU Elastomer is a non-toxic and odorless material. Some TPU series have passed medical certification and FDA certification, and can be implanted into the human body and contact with food. TPU plastic is recyclable and can be used in many industries. TPU resin can decompose after a certain period of time, and will not cause pollution to the environment. TPU does not cont...
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How KUNSUN company and KOSLEN TPU can benefit to their partners and customers
May 27 , 2022
Firstly. TPU is degradable and environmental friendly plastic material, it is widely used in different industry. TPU is environment-friendly materials and can pass almost all the Environmental Test such as Reach, Rohs, Phthalates,Halogen and so on. TPU is well known for it’s excellent abrasion resistance and great physics properties. Plus TPU has also widely be used in food contact and medical pro...