Laser Marking / Laser Engraving

Laser marking and laser engraving at KMLT^®

Precise, durable and versatile
Laser marking or engraving is the ideal tool for processing almost all materials. Laser marking is an essential part of our range of services and is carried out without mechanical stress. Logos, characters, images, consecutive serial numbers, scales, barcodes, QR and data matrix codes are precisely placed on your product. The result is durable and lasts a lifetime.

Versatility and flexibility
The laser systems at KMLT^® are developed for industrial applications and have a high level of precision. A wide variety of materials (metals, light and dark plastics, ABS, PA, PE, PP, POM … and also PMMA, organic materials such as leather or wood, glass, ceramics…) are marked in the highest quality and with high contrast.
Innovative solutions
The range of our machines includes CO₂ lasers, Nd:YAG lasers, fiber and diode lasers in various wavelengths: UV lasers (THG), green lasers (SHG), infrared lasers… and different power classes. A high-precision USP laser will follow soon. This enables us to offer innovative solutions for complex requirements.
Precision and detailed accuracy
With ultra-fine laser spot diameters starting at approximately 15 µm, we handle highly demanding orders. As a preferred partner to the luxury goods industry, we refine and mark precision components for leading luxury watchmakers as well as renowned, tradition-rich manufacturers of premium writing instruments. Our expertise in unwinding complex structures onto cylindrical sleeves enables a nearly seamless, perfectly concealed transition thanks to a clever segmentation process. This exclusive surface engraving unconditionally meets the extreme quality standards of international premium brands.
Machining of cylindrical and large-format parts
For laser marking of cylindrical parts, our laser systems are equipped with swiveling, motorized rotary axes, ideal for applications with round scales or conical parts. Our modern machinery enables us to process larger front plates without any set-offs as well as the precise production of longitudinal scales and scale disks. We can machine components up to a size of 780 x 350 x 370 (depending on layout up to approx. 860 x 460 x 370) in mm (x/y/z) and a maximum weight of 30 kg.

Laser marking: the permanent marking with the laser beam

Various application options
The laser beam can provide a permanent marking in a variety of different ways. This method is particularly effective, is used on a wide range of materials and offers numerous advantages.
Laser annealing marking for metals
With ferrous metals such as steel or stainless steel and also with titanium, a small amount of energy input into the product surface is sufficient to leave a change in the structure and thus a locally visible discoloration.
This method is known as annealing marking, as the laser energy creates an oxide layer in various annealing colors (e.g. black, yellow, red or green).
Color change in plastics
A large number of plastics react just as well to punctual laser radiation. This results in a local color change due to the targeted destruction of partial pigments. The choice of a suitable laser source or the addition of suitable laser additives is also decisive for the result.
Benefits of laser marking
- Durability: The markings are resistant to abrasion, chemicals and extreme temperatures.
- Environmentally friendly: As no inks or chemicals are used, laser marking is an environmentally friendly method.
- High speed: Laser marking is a fast process that shortens production times.
- Cost-effective: The durability and low maintenance costs of laser equipment make laser marking a cost-effective solution.
Branches and applications
Our laser marking solutions are used in various industries, including
- Automotive industry: marking of parts and components, such as vehicle parts, buttons, switches, operating and decorative elements, forgery-proof labels
- Medical technology: marking of medical devices and instruments, such as surgical tools and implants
- Electronics: marking of printed circuit boards, electronic components and housings to ensure clear identification and traceability
- Aerospace: marking of aircraft parts and components
- Jewelry, writing instruments and watch industry: engraving of jewelry, high-quality writing instruments and watches with individual designs, logos, branding…
- Tool and mechanical engineering: marking of tools, machines and machine parts, scaling…

Laser engraving - the more efficient and precise engraving technology

Another type of laser processing is laser engraving. The laser light vaporizes material layer by layer, creating a detailed deep structure. This method is increasingly gaining ground over mechanical processing, as it does not require expensive wear tools and offers a level of filigree detail that cannot be achieved with mechanical tools.
Defined depth structure through laser engraving
Depending on the application, duration and type of material, depths of up to several tenths of a millimeter can be produced effectively. This opens up a wide range of possible applications in various industries.
Advantages of laser engraving
- Cost savings: As there is no need for expensive wear tools, laser engraving is a cost-effective alternative to mechanical processing.
- High precision: The filigree nature of the laser enables extremely fine and detailed engravings that cannot be achieved mechanically.
- Versatile application: Areas of application can be found in mold making (tool inserts, stamps) or for high-quality looking engravings on mechanical watches.
Possible applications for laser engraving
Our laser engraving technology is ideal for:
- Mold making: precise engravings for tool inserts and punches.
- Mechanical watches: High-quality engravings that give mechanical watches a classy look.

Sophisticated surfaces - KMLT^®

Highest precision in the processing and structuring of sophisticated surfaces
Even extremely hard materials, surfaces or coatings (e.g. PVD) are no problem for the laser, in contrast to mechanical processing. In the case of anodized aluminium, the approx. 5…25 µm thick anodizing is vaporized. Paints or powder coatings become discolored or melt away.
Precise separation of homogeneous coatings
Our laser technology enables the differentiated separation or recoloring of overlapping, homogeneous coatings. One example of such an application is a dial consisting of four layers: brass, PVD gold, black lacquer and white lacquer.
Various application options
Our laser markings offer a wide variety of marking options for a wide range of other materials:
- Ceramics: Resistant and easy-to-read markings, ideal for industry and art.
- Glass: Precise markings without material damage, perfect for decorative objects and technical devices.
- Wood: Aesthetic engravings, suitable for furniture, handicrafts and interior design.
- Leather: High-quality markings that complement the material and are suitable for fashion items, accessories and personalized gifts.
Thanks to our advanced laser technology, we can process the most diverse materials individually and in great detail. This enables a wide range of applications in various industries. Our experienced team is on hand to provide you with the best possible solutions for your specific requirements.
Free material test at KMLT^®
If you are not sure whether your material is suitable for laser processing, we offer you the opportunity to have your material tested by us free of charge. This way you can be sure that your materials will be optimally processed.