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  1. LivingHinge

    Injection Molding - PBT Living Hinge - Hinge Breakage

    Thanks once again guys for your feedback. @Pud - Originally the hinge was designed to work with another material, however, due to other issues there was a change in material to PBT. Actually we have never tried to run tool on high tool temperatures. The engineer of the material's supplier has...
  2. LivingHinge

    Injection Molding - PBT Living Hinge - Hinge Breakage

    That's right the main issues are the design of the tool (since it's a hot runner) and the material itself (PBT), however, it's quite impossible to tackle these two main issues for several reasons so the only way forward is to figure out what can be done in regards to process and maybe slight...
  3. LivingHinge

    Injection Molding - PBT Living Hinge - Hinge Breakage

    Hi all, Thanks for your feedback. @Pud - No actually hinge breakage has always been an issue. @hendersdc - Mainly after few bends some cracks start to show up and eventually the hinge breaks off. The above is a cross section view of the hinge. All the dimensions are in range...
  4. LivingHinge

    Injection Molding - PBT Living Hinge - Hinge Breakage

    Hi all, We are facing a problem with an injected molded part which includes a hinge. The main issue is that we are having a quite amount of hinge breakages. The material used is PBT. I know that ideally living hinges should be injected by PP, however, due to other issues we can only inject...

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