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Laserbeschriftung auf Lebensmittel

Laser marking on food – Product information and decoration with taste

For marking food with logos, quality labels, identification numbers or best-before dates, CO2-laser marking is the most appropriate method. Just a little laser energy must be applied to the skin of fruits and vegetables, nutshells or bakery products, so that the product’s quality is barely affected. Laser marking can result in reduced consumption of plastic packages or adhesive labels.

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Laser Marking on Bearings – Engraving versus Annealing Marking

For sample marking on ball bearings, we applied marks with two different procedures for demonstration purposes: laser engraving on the outside, laser annealing on the inside circle. Both markings are robust and durable. For heavily used metal substrates like some bearings, the preferred marking method is often laser engraving, because the marking remains readable even in highly abrasive use.

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Laser marking on Titanium – High-quality marks on valuable material

Expensive materials like titanium, and especially the products made from it, require markings of an appropriate high quality. In order to demonstrate the marking capabilities of a pulsed fiber laser on titanium, we have marked the material with 80 fields of different colors on plates of 5 x 5 cm (1.97 in²) for our sample case. By specifically adapting the laser parameters, it is possible to obtain multiple shades and intensities of colors.

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Laser-sensitive additives for optimized marking results on plastics

While selecting basic plastic material for a special industrial application, manufacturers need to consider whether the material is appropriate for marking – in order not to obtain unpleasant results at the end of the production process. The component as a whole and also the applied marks may need to meet demanding requirements regarding heat or abrasion resistance. Color contrast and resolution, above all, must guarantee the best readability.

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UV-laser marking – High contrasts on sensitive surfaces

UV-laser marking systems with a wavelength of 355 nm use relatively little energy (ca. 2  watt). As a result, only a low heat level is created and the surrounding material is barely affected – which thus contributes to high marking contrasts. UV-lasers are therefore well suited for the marking of sensitive surfaces, e.g. translucent plastics, materials with chemical additives, glass, ceramics etc.

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Animal ear tags – Laser marking for barn and meadow

Information management and “UAI” (“Unique Animal Identification”) do not even stop at farming. In order to be able to track an animal’s pedigree, for in-house registration reasons or milk output documentation, farm animals get tagged. Marking lasers apply appropriate numbers on plastic ear tags. Each animal receives two ear tags to prevent loss, one for each ear – better safe than sorry.

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