contrast Posts

Laser marking on concrete

industrial marking laser Macsa

 

The main function of concrete sleepers is to maintain the stability of the tracks when faced with the static stress caused by the train’s own weight and variations in temperature. Thanks to its lower cost and strength, wood sleepers have been replaced by concrete ones, but is a laser capable of marking a concrete block?

The answer is yes. With the Series F range of industrial lasers by Macsa ID, we can obtain a deep mark, which favours both the contrast and the visibility of the text.

Marking on an oil bottle (PET)

oil marking Macsa

PET containers are the most frequently used ones in the industry thanks to their resistance, flexibility and its ease of molding. In this case, a QR code + 1 line of text (Macsa’s website) were marked on an oil bottle (PET). The difficulty of this type of marking is to ensure that the coding is visible and readable on the transparent plastic and on a material that can easily become greasy during the production chain process.

The marking visibility is high because the marking obtained is white on the transparent plastic and on the background, which is yellow in this case. With the appropriate power of the laser (30W), a QR code mark is produced which is perfectly readable with any mobile application.

Laser marking on plastic taps

macsa-laser-marking-bottle-tap

The last manufacturing process that the product undergoes is coding and marking so that the relevant identification regulations concerning packaged foods or drinks can also be adhered to. In this particular application we can see that the product reference, the time and the expiry date have been marked.

In this case as the bottle top is red, we have achieved a high contrast in white by making a change of colour. In this manner, an indelible mark has been made without damaging the surface in any way.

‘Annealing’ on stainless steel bearing

bearing-codification-mailing-macsa-01

 

Metal parts, such as bearings, also need to be marked for identification with their product reference, brand or lot number for later traceability. Metal requires a marking and coding that does not damage the surface and with a high marking contrast in order to read the data properly.

For this purpose, and in general for the marking of metallic materials such as stainless steel, we use a fibre laser such as the SPA F-9020, which by means of annealing – or changing the metal’s colour by increasing its temperature – we can obtain a permanent black marking of great legibility and without damaging the surface.

Coding with laser reactive ink on glass

laser-coding-macsa-perfum

Glass, one of the most widely used substrates in cosmetics and perfumes, is one of the materials in which laser marking is of excellent quality and which is also considered as one of the hardest. In addition to this, Macsa ID has developed a system that allows a QR code plus 2 lines of text to be marked on a base of laser reactive ink.

laser-coding-macsa-perfum-02The reactive ink base generates a black label as a reaction to the heat which then allows a clear and quality contrast to be made. Thanks to a patented system, the permanence and durability of the reactive layer against scratches and/or external agents is guaranteed.

With this system, which achieves high marking speeds, the possibility arises of marking variable or promotional codes (QR codes to be read with a smartphone) on substrates (glass) that previously required a machine vision system in order to be read later on. Moreover, the IP54 protection of the system prevents the glass debris produced from the marking from entering the laser or damaging the lens.