TPU Injection Molding

TPU injection molding produces tough, flexible, and wear-resistant parts, and we ensure precision manufacturing to meet your exact requirements.
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tpu injection molding

Erye Offer TPU Injection Molding Service Specific to Your Needs!

Thermoplastic polyurethane (TPU) injection molding is a perfect manufacturing process to produce tough, flexible, and wear resistant part. Whether it's a soft and flexible material or a more rigid, durable one, TPU combines both rubbers and plastics properties-high elasticity and impressive impact resistance. TPU molding products are widely used in various applications due to excellent resistant to oils, chemicals, and abrasion.

From prototypes to large-scale production runs, we offer precisely molded TPU parts that meet your specific needs.

TPU Injection Molding Design Tips

Proper design affect TPU injection molded parts performance and manufacturability. Engineers at Erye molding suggest to follow these design tips.
Item Description
Wall Thickness Maintain consistent wall thickness, ideally between 2-4mm, to prevent deformation and ensure uniform cooling.
Draft Angles Use a draft angle of 1-3° to make part ejection easier and reduce stress during removal.
Radii and Fillets Avoid sharp corners, use smooth radii and fillets at corners to prevent stress points and improve durability.
Undercuts Minimize undercuts to reduce mold complexity; consider to use removable inserts or secondary operations if necessary.
Thin-to-Thick Transitions Design a gradual transition between thick and thin sections to prevent material stress and ensure uniform fluid flow.
Gate Location and Design Place gates strategically in areas that promote uniform filling, and consider using multiple gates for larger parts.

Advantages and Limitation of TPU Molding

Advantages

  • Offers excellent flexibility and elasticity.
  • Provides strong abrasion resistance.
  • Maintains good impact strength at low temperatures.
  • Good resistance to oils, greases, and many chemicals.
  • Performs well under repeated mechanical stress.
  • Available in transparent grades for aesthetic use.
  • Bonds effectively with certain plastics in overmolding.

Limitations

  • Requires drying before molding due to moisture sensitivity.
  • Needs precise processing control.
  • Not suitable for high-temperature environments.
  • Relatively higher costs than standard thermoplastics.
  • If not molded correctly will cause shrinkage or warpage.

Applications of TPU Molding Parts

Additonal Options for TPU Parts