Plastic Welding’s Role with Thermal Assembly

Plastic welding allows you to produce a molecular bond between thermoplastic materials. It delivers first-rate strength, and the finished weld is durable, so you won’t need repairs or replacement for a long time.

Plastic welding provides a manufacturer with assembly options for their applications and devices.  At Thermal Press International, we can consult with you on your final assembly to determine the best process, whether plastic welding, thermal press assembly or other technologies.

Our plastic assembly services include:

  • Process Development and R&D Support Services
  • Design and Process Consultations
  • Design Review and Application Support
  • Prototyping
  • Pilot Runs
  • Calibration and PM Services
  • Custom Tool Packages for TPI Equipment
  • Contract Assembly Services
  • Contract Machining

There are various types of plastic welding:

Infrared Plastic Welding

This welding process is a relatively new technique, commonly used for large part assemblies with high hermetic and strength requirements. Infrared plastic welding utilizes a controlled infrared light emitter and melts the joining surfaces using blow-molded assemblies.

Benefits of infrared plastic welding:

  • No tooling or part contamination
  • Reduces the amount of flash
  • Rapid changeover

Ultrasonic Plastic Welding

Ultrasonic plastic welding creates frictional heat in a focused area by converting high-frequency energy into a mechanical motion (vibrations) to create the bond. The plastic melts, forming a molecular fusion. We use this method to weld plastic to plastic, plastic to metal, and plastic to vinyl.

Benefits of ultrasonic plastic welding:

  • Versatile and flexible with little fixture mods or tooling changeover
  • Rapid weld confined to the joint of bonding areas
  • Consistent and repeatable
  • Replaceable fasteners and adhesives

Hot Plate Plastic Welding

This method of welding plastic is also ideal for large part assemblies. It involves applying heat to the parts’ joint areas for a predetermined duration, withdrawing from the heat source, and ultimately bonding the parts, allowing them to solidify under pressure.

Benefits of hot plate plastic welding: 

  • Strong sealing method
  • Compatible with nearly all thermoplastics
  • Able to weld complex shapes and large parts

Why Choose TPI for Thermal Press Assembly?

Thermal Press International, Inc. has been the industry leader in thermal press machines, technologies and customized solutions used in the assembly of plastics for nearly 50 years! We are experts in the field of heat staking, heat sealing, thermal insertion and swaging equipment used in many industries like medical device, electronics, automotive and many others.

Contact Us or call (925) 454-9800 to speak with a Thermal Press engineer.