Laser marking on plastic

Foto-Applicazioni-Plastiche

Speaking about plastics means referring to derivatives from very different chemical compositions, which influence the performance of the processes applied to them, including laser marking.

The different laser sources and the great specialization of modern laser technology today allow us to mark all types of plastic, although the reactions due to color pigments and other additives are very different.

The most popular lasers for plastic applications are the famous UV laser, the green wave FlyPeak laser by LASIT and the traditional green light Laser, with fiber optic source. In most cases, we recommend using a MOPA laser, meaning with variable pulse: thanks to the pulse duration control, this laser ensures maximum performance in the most difficult applications.

The most common processes of laser marking on plastic are carbonization, color change, foaming and engraving.

Carbonizzazione Plastica
CARBONIZATION
Viraggio-Plastiche
COLOR CHANGE
Foaming-Plastica
FOAMING
Incisione-Plastica
ENGRAVING

As a first approach for verifying the effect of marking on a new plastic material, it is advisable to use:

  • High speed (900-1200mm/sec)
  • Low frequency (10-20kHz)
  • Low average power (30-60%)

In most cases pressing too much when marking can be counterproductive and can decrease the final contrast, so it is better to start with 1 repetition and gradually increase them.

Below we have identified the 3 most common plastic materials in our experience, describing their characteristics and the best parameters for marking them.For full reports and further insights, we recommend downloading the Guide.

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WHITE ABS

This material, if not additivated, can be marked fairly well with an Infrared FiberFly laser, well with an Infrared FiberFly laser, well with a FlyAIR Green Wave green light laser and perfectly with a UV FlyUV laser. The latter provides a Photochemical reaction of the material, achieving a high, constant and absolutely indelible contrast, leaving the surface smooth to the touch.

  • Laser used

    FlyUV 8W FFL330

  • Speed

    900mm/sec

  • Frequency

    40kHz

  • Power

    80%

  • Defocus:

    10mm

  • Filling

    0.1mm

PA66 GF 30 Black

Good contrast can be achieved with the Infrared FiberFly laser. The MOPA version is recommended to increase contrast.

  • Laser used

    FiberFly 20W FFL160

  • Speed

    1000mm/sec

  • Frequency

    20kHz

  • Power

    25%

  • Defocus:

    NA

  • Filling

    0.08mm

BLACK POM C

Good contrast can be achieved with the Infrared FiberFly laser. The MOPA version is recommended to increase contrast.

  • Laser used

    FiberFly 30W MOPA FFL160

  • Speed

    600mm/sec

  • Frequency

    10kHz

  • Power

    90%

  • Defocus:

    NA

  • Filling

    0.8mm

  • Pulse Duration

    8ns