Note: Plastic Reflow With Catheter Tubing

Objective:

Heat a metal braid in a plastic catheter tube to 250 °F (121.1 ºC) so that another catheter tube can be bonded to it. 

End Product:

Catheter

Equipment:

Ambrell 1kW induction heating system equipped with a remote workhead with one 1.2 µF capacitor
An induction heating coil designed and developed specifically for this application.

Materials:

0.05 in (1.27 mm)diameter catheter tubes, some with a metal braid
ceramic rod

Temperature:

250 °F (121.1 °C)

Frequency:

306 kHz

Testing:

A single-turn helical coil is used to heat the metal braid for plastic reflow. To maintain the correct inside diameter of the tubing. A ceramic rod is inserted through the tubing. Heat is applied for 3.5 seconds to reach 250 °F (121.1 ºC). The metal braid melts the plastic and creates a bond. 

Benefits:

  • Controlled rapid application of heat

  • Consistent, repeatable results

  • Energy efficient 

Plastic Reflow With Catheter Tubing

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