-
Causes and solutions of dents in injection molded parts
Jul 16 , 2021
Dents in injection molded parts are all defects caused by insufficient melt replenishment when the thicker parts are cooled. The shrinkage of plastic parts (surface shrinkage and internal shrinkage) The main reasons for such defects are improper control of molding conditions, mold defects, raw materials that do not meet the molding requirements, and unreasonable design of the shape of the plastic ...
-
What causes cracking in TPU plastic injection molded parts and how to fix it
Jul 30 , 2021
Cracks are a fatal defect of TPU products, it usually happens to be hairy cracks on the surface of the product. It easily happened in the sharp edges and corners. It is harmful for products usage when the invisible cracks occur in the injection parts,The main reasons that cause cracks during production are as follows: 1 Difficult to demold 2 Overfilling 3 Mold temperature is too low 4 Defects in p...
-
Erke a brand supported by polymer materials became popular overnight
Aug 06 , 2021
Erke donated 50 million yuan in materials to Henan's rainstorm-stricken areas under the circumstances of its own poor management! Countless netizens moved and support this conscientious enterprise with various "wild consumption"As a well-known sports brand in China, Erke leaves a low-key impression to people. Erke has been working hard on running shoes, sports shoes and other series ...
-
Causes and treatment methods of warpage in Plastic Injection Molding
Aug 13 , 2021
Warpage is the injection product defects that parts deviates from the shape accuracy requirements of the part. It is one of the common and difficult solved defects in injection mold design and injection production.Causes of warpageWarpage is caused by uneven stress and shrinkage during the products injection process. Die Adhesion, insufficient cooling, inadequate shape and strength of the part, po...
-
Classification of TPU air cushion and precautions in the production process
Dec 17 , 2021
At present, the most commonly plastic materials used for air cushions are polyurethane (PU), polyvinyl chloride (PVC), and thermoplastic polyurethane (TPU). The following mainly introduces the thermoplastic polyurethane stretch tube air cushion and the thermoplastic polyurethane oil-gas cushion. Thermoplastic polyurethane is a polymer material that has both rubber elastic properties and plastic pl...
-
What kind of TPU products have specific requirements for slip resistance?
Sep 14 , 2024
What kind of TPU products havespecific requirements for slip resistance? Slip resistance is a desirable characteristic for various TPU (Thermoplastic Polyurethane) products, especially those that come in direct contact with where slipperiness can be a concern. Some examples of TPU products that commonly require slip resistance include Shoe Soles: TPU is widely usedinthe production of shoe sol...
-
How to Select TPU for PVC Modification
Aug 31 , 2026
Successful PVC-TPU polymer-blend modification relies not only on material intrinsic compatibility (intermolecular hydrogen‑bonding between TPU urethane groups and PVC polar C‑Cl groups), but also on proper TPU grade selection and strict processing‑temperature control. PVC is a thermally‑sensitive polymer; its narrow safe‑processing window creates unique practical challenges for compounders. The gu...
-
TPU vs. TPEE Shoe Shanks: An Honest Comparison — and Why TPU Remains the Smart Choice for Most Footwear Brands
Sep 20 , 2026
If you've ever compared shank or support-plate options with a footwear material supplier, TPU and TPEE almost always come up as a pair. They get compared constantly — and for good reason: they're close cousins in the "moldable elastomer" family, and both show up across the same product categories. But they behave differently enough under load that picking the wrong one — or the wrong grade within ...
IPv6 network supported
