๐“๐จ๐๐š๐ฒ'๐ฌ ๐Š๐๐Ž๐–๐‹๐„๐ƒ๐†๐„ ๐’๐ก๐š๐ซ๐ž : ๐’๐ข๐ฅ๐ข๐œ๐จ๐ง๐ž ๐ฏ๐ฌ. ๐“๐๐” ๐ข๐ง ๐๐ข-๐Œ๐š๐ญ๐ž๐ซ๐ข๐š๐ฅ ๐Œ๐จ๐ฅ๐๐ฌ: ๐–๐ก๐ข๐œ๐ก ๐Ž๐ง๐ž ๐ข๐ฌ ๐ญ๐ก๐ž ๐‘๐ข๐ ๐ก๐ญ ๐‚๐ก๐จ๐ข๐œ๐ž?

 ๐“๐จ๐๐š๐ฒ'๐ฌ ๐Š๐๐Ž๐–๐‹๐„๐ƒ๐†๐„ ๐’๐ก๐š๐ซ๐ž

๐Ÿ” ๐’๐ข๐ฅ๐ข๐œ๐จ๐ง๐ž ๐ฏ๐ฌ. ๐“๐๐” ๐ข๐ง ๐๐ข-๐Œ๐š๐ญ๐ž๐ซ๐ข๐š๐ฅ ๐Œ๐จ๐ฅ๐๐ฌ: ๐–๐ก๐ข๐œ๐ก ๐Ž๐ง๐ž ๐ข๐ฌ ๐ญ๐ก๐ž ๐‘๐ข๐ ๐ก๐ญ ๐‚๐ก๐จ๐ข๐œ๐ž?

▶️ At Star Moldes, we know that selecting the right material is just as important as designing the right mold. When it comes to bi-material injection molding, Silicone (LSR) and TPU (Thermoplastic Polyurethane) are two popular options, but they offer very different advantages.



๐Ÿงช Silicone (LSR)

✅ Excellent resistance to extreme temperatures

✅ Outstanding flexibility and long-term durability

✅ Biocompatible and ideal for medical, healthcare, and food-contact applications

✅ Superior UV and weather resistance


⚠️ Considerations:

• Requires specialized LSR injection molding equipment

• Higher processing complexity and tooling requirements

• Longer development and validation process


๐Ÿ›ก️ TPU

✅ High abrasion and tear resistance

✅ Excellent impact absorption

✅ Recyclable as a thermoplastic

✅ Faster processing cycles and easier integration with standard injection molding


⚠️ Considerations:

• Lower temperature resistance than silicone

• Can degrade under prolonged UV exposure without additives

• Mechanical properties may vary depending on the grade selected


⚖️ Regulatory & Compliance Considerations


๐Ÿ’ก Depending on the application, this may include:


๐Ÿ“Œ FDA or EU food-contact requirements

๐Ÿ“Œ Medical biocompatibility standards (such as ISO 10993)

๐Ÿ“Œ REACH and RoHS compliance

๐Ÿ“Œ OEM and industry-specific specifications


๐ŸŽฏ There is no universal "best" material. The right choice depends on your application's performance requirements, production process, regulatory obligations, and cost targets.


source : Star Moldes


#InjectionMolding #Bimaterial #Silicone #TPU #LSR #Tooling hashtag

#MoldMaking #Automotive #StarMoldes



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