Marking on Plastic

Laser marking is fundamentally different from ink printing, the traditional method of marking on plastics.

Direct ink printing puts an image on the surface of the plastic. Abrasion or solvents removed.

But Laser marking can provide an indelible high-contrast mark in the material itself, with no direct contact with the plastic other than through the incident Laser beam.

This application insight looks at Pulsed Fiber Laser marking of plastics focusing on the four key types of mark: foaming, engraving, engraving with color change and color change only marking.

It also explores Laser marking of different types of plastic including ABS, polyethylene.

And why our Pulsed Fiber Laser is the best tool for the job.

Lasers are widely used to mark a diverse range of plastic materials but results can be highly dependent on the type of plastic.

ABS is a commonly used material in automotive and engineering applications.

The ability to produce high quality marks on this material is often difficult and dependent on the color and composition.

On black ABS, users are looking for crisp white, high contrast marks, and these are often difficult to achieve, particularly with long high energy pulses.

Long high energy pulses  tend to melt the matrix, causing unwanted surface texture, and dilute the contrast.

Last, note: it is always advisable to test the marking characteristics of plastics as variations in results that we can often see.

Sophia

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