PETG Plastic for Injection Molding

A transparent, durable material that offers heat and chemical resistance.

Product Description

Polyethylene terephthalate glycol is better known as PETG. It meets ISO 10993 and USP Class VI biocompatibility requirements. Tougher than its cousin, PET, it is highly processable, while remaining strong, transparent, and easily molded. Best of all, it’s a cost-effective material.

Key Benefits of PETG for Injection Molding

The grade of PETG that we offer (Eastar 6763) offers the following benefits: 

  • Easy primary and secondary operations
  • Excellent clarity 
  • Excellent toughness
  • Gamma, ebeam, and ETO sterilization stable

Applications of PETG Plastic

  • Clear signage
  • Flexible medical device packaging
  • Houseware
  • Light fixtures
  • Pharmaceutical packaging
  • Rigid medical packaging
  • Water bottles

Design Guidelines for PETG

As with all injection molded parts, it is important to maintain uniform wall thickness to avoid issues with warp and sink. Remember that it takes longer for thick walls to cool. Ensure that you have adequate draft so your part can eject from its mold easily. For PETG, between 1 and 3 degrees of draft is recommended. Thin sections should be reinforced with ribs and bosses, while thick sections should be replaced with gussets or fillets. 

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