In the promotional gadget industry, laser marking has wide application. Water bottles, pens, USB sticks, key chains and other accessories can be customized with company logos, patterns and designs. giving them a professional and distinctive look that meet various marketing and branding needs. The result of laser processing is characterized by extremely defined details, resistance to daily wear and tear, and seamless integration with the base material, remaining unalterable over time. This is why this technology is extremely popular in the professional and promotional sectors. Laser marking gives a premium look to the final product, ensures long-lasting customization, and allows for numerous series while maintaining consistent quality.
Laser marking versus pad printing
Pad printing technology is currently widespread in the industry, particularly in small-scale applications where initial cost and operational simplicity are priorities. Laser marking, however, establishes itself as a solution of excellence for modern industry: its superiority in terms of industrial automation, environmental sustainability, production flexibility and quality of result, combined with advantageous operating costs in the long run, make it the optimal choice for forward-looking companies.
Saving
While pad printing requires continual investment in consumables such as inks and pads, as well as the expense of storage and disposal of special waste, laser technology essentially requires only electricity to operate, with low and easily programmable maintenance costs. For companies with large production volumes, this translates into a particularly rapid return on investment.
Ecology
Laser technology operates completely cleanly. It generates no process waste and, thanks to vacuum systems, no harmful emissions. Unlike pad printing, it consumes no water, produces no chemical waste, and requires no special disposal processes. The reduced carbon footprint makes laser a winning choice for environmentally conscious companies.
Data dynamics
Pad printing is constrained to the use of fixed plates that must be replaced for each change, leading to long production changeover times and additional costs for each change. With laser technology, on the other hand, changes are made via software, allowing automatic serialization and dynamic encoding of dates, lots and serial numbers. This feature, combined with the possibility of integration with company databases, makes variable marking possible in real time, adapting perfectly to modern production needs.
Resistance
Markings made with pad printing are subject to deterioration over time, are sensitive to chemicals and abrasion, and can fade when exposed to UV light. Laser marking, on the other hand, creates a permanent alteration in the material, proving resistant to chemicals and extreme temperatures: codes and markings therefore remain perfectly legible over time.
LASIT’s solutions for the promotional sector
In the promotional sector the main demands of gadget manufacturers are: high productivity, versatility of the laser marker, and laser marking of special decorations. Aesthetic laser marking here plays a dominant role so the choice of laser marker and marking parameters are more important than elsewhere. LASIT usually carries out free tests on gadgets. This helps us identify the best laser among the 13 different sources in our lab. Based on the material, processing to the desired design we evaluate the best choice. In terms of laser marking quality, the choice of source is crucial. To meet production requirements, however, automation and the laser marking system are important. The laser source that LASIT has proposed the most, precisely because of its versatility, is the MOPA fiber, which, thanks to the ability to adjust pulse duration, is particularly suitable for precise laser marking of painted or chrome-plated components. The MOPA laser retains the advantages of the fiber laser (no maintenance, long life, and air cooling) but can boast a number of added values for both laser marking of plastics and laser marking of metals.
3D laser marking with the 3-axis head
The LASIT three-axis head consists of a linear motor system, two X and Y rotators that allow the laser beam to move along the axes, and a third axis for focusing. The laser beam passes through a lens equipped with a moving lens, which in turn, is mounted on a linear translator. Operation is adjusted automatically through FlyCAD software. The heart of the three-axis head is the optical design, which varies according to the type of application and application requirements: the system can adapt to the size of the working field and the required laser spot size. The scanning mirrors are located after the objective lenses. The raw laser beam enters the optical system through the dynamic expansion lens. The objective lenses re-draw the Gaussian Beam formed by the dynamic expander lenses onto the target plane. Movement of the dynamic expander lenses through the linear translator varies the focal plane distance, and thus the dynamic focus. The mirrors (MX and MY)-which are located in the XY scanning module-bend the beam and direct it by angular deflection to scan the target plane. This advantage of the 3-axis head is particularly useful on components such as flasks, glasses, and other gadgets with a circular shape.
The challenges of the promotional sector
The marking of cylindrical objects, such as pens and flasks, represents a special technical challenge that requires specific equipment and specialized expertise. To achieve uniform and precise engraving on curved surfaces, it is necessary to use machinery equipped with a laser-synchronized rotary system. This system allows the object to rotate during marking, ensuring that the laser beam always maintains the same distance and intensity on the surface. Without this specific technology, there would be a risk of irregular or distorted engravings, compromising the quality of the final result. The complexity of this processing is often reflected in longer lead times and slightly higher costs than marking flat surfaces. LASIT has brilliantly overcome these technical challenges by developing state-of-the-art marking systems specifically designed for cylindrical objects.