Xfurth Ltd Blog

Ultrasonic Insert Welding is a commonly used assembly method for inserting metal inserts into a variety of plastics, post-moulding. It can prove more reliable than traditional heat inserting methods and often more cost effective than in-mould inserting.

Economical, reliable and easily automated, ultrasonic welding is a popular technique in the plastics welding industry. Ultrasonic welding differs from more traditional forms of welding, where heat is generated through contact with a direct heat source.

There are three distinct types of plastics which respond to ultrasonic welding in different ways: thermoplastics, elastomers and resins.

Try Spin Welding!

Find out how spin welding could help your production requirements today.

The concept of spin or rotional welding is very simple: the base component is kept static whilst the upper moulding is rotated and forced together. This action creates frictional heat that, when cooled and under carefully maintained pressure, creates a hermetic seal of exceptional strength. This occurs in only a few seconds.

Plastic welding is the process of making a molecular bond between two thermoplastics that are compatible, which when cooled return to a solid form.

One straight forward process for doing this is ultrasonic plastic welding. Whatever the specifics of a particular application, ultrasonic welding's fundamentals always remain the same, employing sound waves that are ultra-high in frequency, plastic can be heated with the ensuing friction, creating a strong bond.