Commercialised PBT moulding compounds for laser welding

Panasonic has announced that it will start mass production of polybutylene terephthalate (PBT) moulding compounds for laser welding in March, 2016. The company says this will contribute to the enhancement of long-term reliability and the flexibility of design of automotive switches and sensors.

Currently, processing methods used for the production of automotive sensors include sealing with packings and bolts, bonding with adhesive agents, as well as ultrasonic welding. Laser welding has recently attracted the industry's attention as its high welding strength can shorten the bonding time and increase productivity.

However, plastic moulding compounds generally used for laser welding have had low laser transmittance, leading to problems with welding strength and waterproof properties. In order to solve these problems, Panasonic claim to have commercialised the PBT moulding compounds with the industry's highest laser transmittance, giving them high welding strength and waterproof properties.

With these compounds, Panasonic claims, it is possible to use laser welding instead of the current processing methods, and therefore long-term reliability and flexibility of design can be enhanced when they are applied to automotive components.

Tom Austin-Morgan

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