Why UV laser is the ideal choice for glass

Glass is a complex material to work with precision. Unlike metals or plastics, it requires a delicate approach to avoid microcracking, chipping or dull, ill-defined results. UV lasers, with a wavelength of 355 nanometers, offer a “cold” interaction with the material: energy is absorbed in a highly localized manner, without generating significant thermal stress in the surrounding areas. This process ensures sharp markings, as deep as necessary and free of aesthetic defects.

White marking on glass, achieved by UV laser, is distinguished by its high contrast and elegant appearance. The end result is a smooth, uniform and durable surface that does not degrade even after repeated washing or exposure to the elements. For a company operating in the promotional sector, this translates into finished products that keep their perceived value intact and communicate professionalism to the end customer.

Depth of field and application versatility

One of the most appreciated aspects of the UV laser in glass processing is the optimal depth of field. Thanks to the quality of the laser beam and the ability to precisely adjust processing parameters, it is possible to mark objects with surfaces that are not perfectly flat or with small dimensional variations without compromising the quality of the result. This feature is particularly useful when working on cylindrical bottles, conical glasses or objects with complex shapes.

Marking can be modulated to achieve different levels of contrast and depth, depending on the aesthetic requirements of the project. Company logos, custom lettering, decorative patterns and even high-resolution images can be faithfully reproduced on the glass, providing a level of detail that is difficult to achieve with other technologies.

Productivity: from single marking to large batches

In the promotional industry, production volumes can vary widely. A company may need to produce a few customized pieces for an exclusive event, or handle orders of thousands for large-scale promotional campaigns. The UV laser effectively meets both needs.

For small batches or one-off productions, the main advantage is the absence of tooling costs. No jigs, plates or dies are needed: the design is loaded directly into the marking software and the laser is immediately operational. This allows graphics to be changed from part to part in seconds, paving the way for mass customization strategies that are now a strong competitive differentiator.

When dealing with large volumes, however, the choice of laser power becomes crucial. A 10-watt system already guarantees excellent results in terms of quality, but to increase marking speed without compromising aesthetics, it is possible to opt for 20- or 30-watt sources. These configurations make it possible to significantly reduce cycle times while maintaining the accuracy and contrast of white marking. In practical terms, this means being able to process hundreds or thousands of parts per day with a single machine, optimizing operating costs and meeting deadlines even during production peaks.

Inline integration and automation

Many companies in the promotional sector already have semi-automatic packaging or assembly lines. The UV laser can be easily integrated into these production processes, ensuring operational continuity and reducing downtime. With customizable software and standard communication interfaces, the laser system can communicate with line supervisors, receive marking data dynamically, and synchronize its cycle with upstream and downstream operations.

For those working with large volumes, adopting rotary table or automated load/unload machines further maximizes productivity. The operator loads parts on one station while the laser works on the other, eliminating downtime and keeping the system up and running at all times. This logic of working in masked time is particularly appreciated when tight deadlines must be met or seasonal peaks in demand must be managed.

Perceived quality and value of the finished product

In the promotional industry, the perceived quality of the finished product is crucial. A poorly customized item with faded or inaccurate graphics communicates a negative image of the brand that commissioned it. In contrast, a carefully executed UV laser marking conveys attention to detail, professionalism, and care for the end customer.

The bright white contrast achievable on the glass, the pinpoint accuracy of the details, and the durability of the marking help elevate the perceived value of the object. This translates into a tangible competitive advantage: customers are willing to recognize a premium price for products that stand out for quality and durability.

Flexibility and quick setup

Another relevant aspect for those in the promotional business is the ability to quickly handle different requests. The UV laser does not require tooling times comparable to those of traditional technologies such as screen printing or pad printing. Changing graphics, changing the size or orientation of the marking, adding variable text or unique codes is a matter of a few clicks on the control software.

This operational flexibility makes it possible to accept even small orders while maintaining attractive profit margins, without incurring high fixed costs or tying up resources in extended setups. For a company that wants to position itself as a reliable and responsive partner, this feature is a key strategic element.

Sustainability and waste reduction

UV laser marking is a clean technology that does not involve the use of chemical consumables, inks, solvents or disposable masks. This aspect, in addition to reducing operating costs, helps improve the environmental impact of the production process. At a time in history when sustainability is increasingly at the center of business decisions and end-consumer expectations, being able to communicate a responsible approach becomes an important added value.

In addition, the laser’s high accuracy minimizes scrap. There is no smearing, casting, or positioning errors typical of other techniques, and this results in a very low rejection rate, even on large production batches.

Reliability and low maintenance

The latest generation of UV laser systems are designed for high reliability over time. Laser sources have an operating life measured in tens of thousands of hours, and routine maintenance is limited to periodic cleaning of optics and routine checks. This means that the initial investment is amortized over a long time horizon, with predictable and low operating costs.

For a company that focuses on production continuity, being able to rely on stable and reliable technology is critical. Unplanned downtime is an often underestimated hidden cost, and choosing a quality laser system can dramatically reduce this risk.

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Glass is a naturally occurring material composed mainly of silica (_SiO2). It is an amorphous solid, and therefore its atoms are rigid as in a crystal but disordered as in a liquid and therefore, are likened to subcooled liquids of very high viscosity.

Most commercially available glass is not only composed of silica; other compounds are added to this material that modify the properties of the glass and make it suitable for different uses. However, the addition of substances to the composition changes the “laserability” of the material.

Industrial glass has a more uniform structure and therefore lends itself better to laser processing. Handcrafted glass, on the other hand, lends itself less to laser processing. In this case, the very craftsmanship may result in inconsistencies in composition and structure such as microcracks that, when subjected to the heat generated by the laser, could break the glass.

Transparency, compactness and structural homogeneity, total chemical and biological inertness, impermeability to liquids, gases, vapors and microorganisms, inalterability over time, sterilizability and perfect ecological compatibility thanks to the possibility of recycling an infinite number of times. These are the outstanding intrinsic characteristics of glass, which is made entirely of natural substances.

Characteristic of glass is its poor tolerance of thermal expansion. When glass is subjected to laser, fractures are produced at the microscopic level, resulting in marking or cutting.

Depending on the type of glass, the marking process can take place in different ways.

• Sodium-calcic glass:

Soda-lime glass is the most common type of glass. Used the production of windows, bottles, glass tableware and other everyday objects, it lends itself well to laser processing.

On this type of glass, marking is achieved through the generation of thousands of micro-fractures on the surface of the glass. Thermal shock causes expansion of the glass, which, being a rigid material, fractures. This results in an opaque mark with a satin appearance, quite similar to the workings performed by traditional methods but at a much lower cost.

Some examples of applications are to be found in the decoration industry (decoration of glass glasses and tableware, window glass, and interior glass in general), the automotive industry (engraving of identification codes on automobile glass), and laboratory glassware production (engraving of graduated scales).

• Quartz glass

Quartz glass is obtained by fusing quartz instead of silica. Its characteristics are high temperature resistance, excellent optical transmissibility and high corrosion resistance.

The processing of quartz glass by_CO2 laser is done by surface fusion. Fusing the material changes the lattice structure of the glass, changing the refraction of light relative to the rest of the surface, resulting in a recognizable sign.

• Boron-silicate glass

Borosilicate glass, also known by the trade name Pyrex, is made by adding minerals such as boron along with other compounds to silica. The resulting chemical reaction produces a glass with excellent resistance to thermal expansion. For this reason it is widely used in the production of tableware and baked goods. Borosilicate glass can be subjected to marking by_CO2 laser.

Advantages of laser on glass over other technologies:

Laser glass etching is an extremely efficient process that has proven to be economically viable for both small production runs and mass production.

Such an engraving:

• is resistant to wear and tear as well as corrosion and contact with aggressive substances, such as concentrated detergents or acids.
• Costs are low because there are no consumables (sprays, ink, pastes, etc.).
• Speed, even in format changes: you can mark different products without downtime.
• High definition, even for very small markings.

Compared to a process such as Sandblasting on glass or Mechanical Engraving:

• Laser engraving has no design limitations: sandblasting is less precise than laser engraving and cannot create fine details.
• It is a faster process: Sandblasting takes longer than laser engraving.

Types of lasers: UV, CO2 and Picosecond

The interaction between lasers and glass is affected by laser wavelength and pulse duration. Picosecond lasers are ideal for high-precision applications.

Picosecond Laser and Glass

Picosecond lasers generate extremely short laser pulses, with pulse durations on the order of picoseconds. They are characterized by a wavelength of 1030 nm and spot circularity over 96%. Each pulse has cica duration of 1.9 ps and maximum energy of 26.4 μJ. In burst mode, it can deliver very high energy pulses (over 230-250 μJ at 200kHz)

When these pulses hit the glass, the concentrated energy in such a short period of time creates a very intense interaction with the material.

The laser energy is sufficient to break chemical bonds in the glass, creating small cavities or incisions.

Unlike longer wavelength lasers, picosecond lasers generate minimal heating of the surrounding material because the energy is concentrated in a short time instant. This reduces the risk of thermal damage to glass, making picosecond lasers ideal for marking and precision machining applications.

_CO2 Laser and Glass

CO2 lasers emit radiation at a wavelength of 10600 nanometers and a circularity of more than 90 percent, which is in the far-infrared region. When this radiation hits the glass, it is absorbed by the material, causing the surface to heat up.

The interaction between the_CO2 laser and glass can result in:

Melting and Ablation: Due to heating, glass may melt or ablate from the surface. This makes_CO2 lasers suitable for cutting and etching glass, but may be less precise than picosecond lasers in terms of processing details.

Increased heat propagation: CO2 lasers generate more heat propagation in the material than picosecond lasers, which can increase the risk of creating unwanted fractures or thermal damage to the glass.

UV Laser and Glass

UV lasers operate at much shorter wavelengths, typically between 100 and 400 nm, circularity over 98 percent. When this radiation hits glass, it can cause photoablation phenomena, similar to picosecond lasers, but on a coarser scale.

Experimental tests comparing UV, PICO and CO2

The tests were carried out by going to mark on a traditional glass the same design (Lasit Logo) with the optimal marking parameters for each optical system/source.

The types of sources used are: CO2, UV and Fiber (Pico with burst mode).

The measurements made and the images captured, were obtained with the use of a panfocal microscope: 4k Microscope – VHX Series 7000, which allows visualization of the three-dimensional profile of the marking with zoom levels ranging from a minimum of 20x to a maximum of 2500x.

CO2 – Surface Marking

Description of experimental results CO2

In the case of the CO2 source, a marking characterized in general by low definition and high roughness (Ra=6um and Rz=24um) is obtained.
In particular, it is observed that the details of smaller features are barely visible, so this type of source is not recommended for making markings having small and minute details.

This result is caused by a larger laser spot size and the grain size on the machined surface having large grains (of about 11500 ^um2).

In addition, precisely because of the large spot and grain sizes, it is not possible to make markings inside the material.

However, this type of marking has the advantage of presenting: wide working range and depth of field and reduced marking time.

UV – Surface Marking

Internal marking

Description of UV experimental results

In the case of the UV source, marking characterized in general by good definition and high roughness (Ra=6um and Rz=26um) is obtained.
In particular, it is observed that the details of smaller section sizes are clearly visible, so this type of source can be used for making markings having small and minute details.

This result is made possible by a smaller laser spot size and the uniformity of the grain size present on the processed surface. Since the reactivity of the material is high with this type of the source, a greater depth of the marked profile is generally observed (in tests up to 66um). In addition, with this type of source it is possible to make markings inside the material, which turn out to be well-defined and uniform. In addition, this type of marking has the advantage of presenting: wide working range and depth of field.

UV laser marking on glass: quality, precision and productivity for the promotional sector

In the world of promotional items and personalized gifts, glass has always represented a prestigious material. Glasses, bottles, trophies, commemorative plaques and gift items require workmanship that respects the elegance of the medium and ensures long-lasting results. UV laser marking on glass has established itself as the most effective technology for achieving superior engravings on glass, capable of combining impeccable aesthetics and high productivity.

White marking on glass, achieved by UV laser, is distinguished by its high contrast and elegant appearance. The end result is a smooth, uniform and durable surface that does not degrade even after repeated washing or exposure to the elements. For a company operating in the promotional sector, this translates into finished products that keep their perceived value intact and communicate professionalism to the end customer.

PICO – Surface Marking

Description of experimental results PICO BURST

In the case of the Fiber source with picosecond pulses, marking characterized in general by high definition and low roughness (Ra=2um and Rz=12um) is obtained.
In particular, it is observed that the details of smaller strokes are excellently visible, so this type of source is recommended for making markings having small and minute details.

This result is made possible by a low laser spot size, low contact time with the material and the uniformity of the grain size present on the machined surface, the size of which is around 60 ^um2.

Since the pulse is on the order of picoseconds, all the energy is used to machine the surface, limiting heat dissipation within the material. For this reason, the profile depth is shallow (10um), being limited to the machined surface.

In addition, thanks to the bust feature with which this type of source is equipped, it is possible to make markings inside the material in two color shades (light and dark), which turn out to be well-defined and uniform in both cases.

In addition, the marking type has the disadvantage of having reduced working range and depth of field.

Comparison results

The post Laser Marking on Glass: The LASIT Revolution appeared first on LASIT - Laser marking.

Traditional technologies such as screen printing and pad printing show structural limitations when it comes to productivity on diverse batches. Each graphic change involves significant setup times, downtime for cleaning and adjustments, and consumable costs that affect margins. Laser marking emerges as the ultimate answer to these critical issues, offering operational flexibility and production speeds impossible with conventional methods.

Technological Innovation: Beyond the Limits of Traditional Marking

Laser marking on ceramics has reached levels of technological maturity that enable results unthinkable just a few years ago. Deep engraving capabilities of up to 250 microns-double the market standard-ensure extreme durability and resistance to industrial washing, crucial elements for promotional applications subject to heavy use.

The process of removing the surface layer of enamel is done through controlled ablation, keeping the underlying ceramic structure intact. This technique ensures uniform visual contrast regardless of the base color, eliminating the variables that penalize productivity in traditional technologies.

The modern laser marker operates with optimized parameters that ensure high level of detail even on complex graphics, reproducing company logos with photographic definition in industrial cycle times.

Case Study: Multiplied Productivity with Towerslide

A major player in the promotional industry chose Towerslide to overcome production bottlenecks in the customization of ceramic mugs. The challenge was ambitious: to quintuple hourly productivity while maintaining high quality standards on diverse batches.

The implemented solution included a dual laser source configuration operating simultaneously on 4 cups per cycle. The customized jig system with handle controllers allows loading and unloading in masked time, completely eliminating the downtime that characterizes traditional systems.

Custom software automatically manages the production sequence, alternating work stations while the operator prepares the next batch. This architecture has led to an 80 percent reduction in operator impact, freeing up human resources for more value-added activities.
The measured results speak for themselves: from 50 cups/hour of the traditional process to more than 240 cups/hour with Towerslide, while maintaining consistent engraving quality and zero waste due to process defects.

Laser marking in masked time

The Towerslide represents a solution designed specifically for gadget marking. The hidden-time linear system eliminates dead time through an innovative engineering approach.
The all-steel structure ensures dimensional stability even during intensive production cycles, while the split work surface allows simultaneous marking and loading/unloading operations. Theinner marking area remains identical to Towermark standards, ensuring compatibility with existing layouts, while theouter area remains accessible at all times for preparation of the next cycle.
The linear X-axis handling system automatically alternates operating zones, creating a continuous production flow that eliminates pauses typical of traditional systems.

The advantages of Towerslide LASIT

In the landscape of promotional laser marking systems, Towerslide stands out for superior production versatility compared to conventional rotary systems. While rotary solutions excel on large, homogeneous batches, Towerslide maintains high efficiency even with frequent changes between different products.
Operational flexibility translates into quick setups of less than 3 minutes between different batches, compared to the 15-30 minutes required by traditional systems. This feature is decisive in promotional productions, where the variety of demands imposes extreme management agility.
The constant dimensional accuracy guaranteed by the steel construction ensures repeatability of engraving even over large batches, eliminating waste that penalizes overall productivity.

Configurations and Production Scalability

The Towerslide laser marking machine offers modular configurations to meet different production requirements. The standard single version with 600mm useful stroke is perfectly suited to small to medium diversified production, providing maximum flexibility with low investment.
The dual source version represents the ultimate in laser productivity, with dual marking heads operating simultaneously on independent stations. This configuration literally doubles the hourly production capacity, while maintaining the ability to process different products simultaneously thanks to the intelligent coordination software.
Customizable templates adapt not only to ceramic mugs but also to key rings, promotional pens and miscellaneous objects, maximizing the use of the investment on different product lines.

Prospects for Development and Technology Integration

The evolution of laser marking on ceramics is progressing toward the integration of advanced vision systems for automatic quality control and adaptive process parameters that automatically optimize speed and quality based on the material. These developments promise further productivity gains while maintaining high quality standards.

Check the Results in Our Laboratory

Towerslide’s productivity data are not just commercial promises, but measurable and replicable results. Our application laboratory is equipped to simulate real production conditions and concretely demonstrate the benefits in process speed and etch quality.
Send your ceramic cup samples for free marking tests. Our technical team will perform specific tests on your materials, document actual cycle times and provide a detailed report with optimized parameters for your production.

During productivity testing, all critical aspects will be checked: depth of etching, graphic definition, resistance to washing and, most importantly, throughput speed to quantify the real production increase over your current processes.

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The promotional industry is undergoing a profound transformation driven by the growing demands for environmental sustainability. Companies can no longer afford to ignore the ecological impact of their marketing strategies, and this is particularly true for the customization of promotional gadgets, water bottles, mugs, USB sticks and other merchandising items.

Traditional marking methods such as pad printing and screen printing, while established for decades, have significant environmental criticalities. High consumption of materials such as inks, solvents, plates and frames must be constantly renewed, while chemical waste management involves the disposal of potentially polluting substances. Each design change also requires new setups generating pre-production waste, and drying and cleaning processes require significant energy consumption.

The Innovation of Laser Marking in the Promotional Sector

Laser technology is a practical answer to the industry’s environmental challenges. Laser marking systems use concentrated energy to create permanent markings without the use of chemicals or consumables, completely revolutionizing the traditional approach to customization.

Environmental Benefits of Laser Marking

Laser marking totally eliminates traditional consumables, operating solely on electricity once installed. No processing waste, chemical residues or materials to be disposed of as special waste are produced, while modern engraving lasers operate with reduced energy consumption compared to screen printing drying processes.

The main ecological benefits of laser technology include:

• Zero chemical impact: complete elimination of inks, solvents and pollutants
• Drastic waste reduction: no waste material to be disposed of as special waste
• Energy efficiency: electricity consumption 40-60% lower than traditional processes
• Durability of markings: superior strength that eliminates reworking
• Production flexibility: instant design change without material waste

Detailed Comparison: Laser vs. Traditional Methods

Laser engravings also provide superior durability compared to traditional markings, being permanent and resistant to daily wear and tear. This eliminates the need for re-marking due to weather deterioration, further reducing the overall environmental impact of the process.

Practical Example: Customizing Water Bottles and Drinkware

A case in point concerns the customization of thermal flasks and drinkware, a fast-growing segment in the Italian promotional market. A campaign for 5,000 stainless steel flasks customized with traditional pad printing requires the production of specific plates for each color (often 2-3 colors per logo), the consumption of about 4-5 liters of special metal ink, and the use of aggressive solvents to clean the equipment. Setup time for each color change is around 25-35 minutes, while the need for controlled drying involves an additional 10-15 minutes per piece.

With laser marking on metals, the same result is achieved without any consumables or chemical emissions. Design changes take as little as 20 seconds, each water bottle can have a completely different personalization, and the marking is resistant to dishwasher washings and everyday wear and tear. For anodized aluminum water bottles,laser engraving creates an elegant and permanent contrast that enhances the finished product.

Economic Impact of Sustainability

Adoption of laser technology in the promotional sector generates immediate and measurable economic benefits. Eliminating the purchase of consumables results in 60-80% savings in operating costs, while optimizing production changeover times reduces setup times by 70%. Minimization of production waste results in superior production efficiency, while the possibility of premium customization justifies higher prices to the end customer.

Companies that adopt sustainable technologies can also enhance this aspect in their communication to end customers, who are increasingly sensitive to environmental issues and willing to recognize a premium price for eco-friendly products.

Laser Technologies for Various Materials

The versatility of laser technology makes it possible to work effectively on all typical promotional materials:

• Fiber lasers: ideal for metals (steel water bottles, metal cups, key chains) with deep and durable markings
• UV lasers: perfect for colored plastics and heat-sensitive materials without thermal deformation
• Green lasers: optimal for transparent plastics and reflective materials, opening up new creative possibilities
• CO2 lasers: effective on organic materials such as wood, cardboard and some plastics
• Picosecond lasers: for applications requiring extreme precision on delicate materials

Environmental Certifications and Standards

Modern laser markers meet the most stringent international environmental standards. CE certification ensures environmental safety, while RoHS compliance limits the use of hazardous substances. Certified energy efficiency helps reduce carbon footprint, and eco-friendly design facilitates recycling of equipment at end of life.

Future Prospects of the Sector

The promotional market is evolving toward circular economy models where sustainability becomes a primary competitive factor. Laser technology is positioned as an ideal solution for this scenario, enabling sustainable mass customization where each item can be unique without additional environmental impact.

Full traceability possibilities through laser-marked QR codes enable product lifecycle monitoring, while integration with IoT systems optimizes consumption and productivity. Compatibility with bio-based plastics and recycled materials is another step toward complete sustainability of the production process.

Laser marking systems are no longer just an alternative to traditional methods, but the technology of choice for a promotional industry that looks to the future with environmental responsibility and technological innovation.

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Those in the promotional items industry know how crucial it is to combine production speed and quality customization. Whether marking large batches of key chains, customizing sets of pens or engraving gadgets of various kinds, the challenge is always the same: to ensure perfect results by combining outstanding productivity with great flexibility.

Towerslide was created precisely to meet these needs. Made entirely of steel to ensure maximum stability and precision, this laser marker is distinguished by two unique features: the option of dual laser source configuration to double productivity and an innovative handling system that eliminates loading/unloading downtime. The result is a system that provides maximum production efficiency while maintaining all the versatility needed to adapt quickly to different marking requirements.

Towerslide Innovation: Evolution of Laser Marking

Towerslide represents the technological evolution of the established Towermark LASIT in the field of laser marking. Its innovative design is based on the hidden-time linear concept, which optimizes production time through an ingenious system:

• Split work surface with internal marking area identical to standard Towermark
• Outdoor area always accessible for loading/unloading operations
• X-axis linear motion system to alternate operating zones
• All-steel structure to ensure stability and precision in intensive processing

Practical Applications and Operational Benefits

Towerslide particularly excels in laser marking of small promotional items:

• Workspace optimization for batches of key chains, pens, and small gadgets
• Ability to arrange custom grids to maximize marking area
• Efficient management of diversified productions with rapid setups
• Loading/unloading in masked time for continuous productions

Comparison with Rotary Systems

While Towerslide shines in handling diversified production, rotary systems such as Rotomark show their strengths in specific scenarios:

Towerslide ideal for:

• Productions with high variety of items
• Variable lot sizes
• Need for frequent setups
• Marking small objects in large quantities

Rotomark preferred for:

• Productions concentrated on 3-4 types of products
• Large homogeneous batches (e.g., flasks of the same model)
• Long and standardized production cycles

Technical Specifications and Versatility

Towerslide is distinguished by its operational flexibility:

Available configurations:

• Single version:
  • Useful stroke in X: 600mm
  • Standard marking area
  • Ideal for small to medium productions
• Double version:
  • Double marking head
  • Useful stroke reduced to 200mm per station
  • Doubled productivity for homogeneous batches

Software Integration and Control

The Towerslide system is managed by the proprietary Fly Promo software, developed specifically for the promotional sector, which offers:

• Intuitive interface for managing markings
• Template library for common promotional items
• Advanced grid positioning management
• Real-time production control
• Production statistics and reports

The post Towerslide: Advanced Laser Marking System for the Promotional Sector appeared first on LASIT - Laser marking.

The three main laser technologies used in this field-MOPA fiber laser, CO2 laser, and UV laser-have different characteristics and performance on each material. Knowing their potentials and limitations allows you to select the most effective solution for each promotional marking need.

Key features of laser technologies

MOPA fiber laser: versatility on metals and beyond

• Technical characteristics:
  • Wavelength: 1064nm (near infrared)
  • Modulated pulse duration: from 4ns to 200ns
  • Frequencies up to 1MHz (adaptable according to application)
  • 35µm spot diameter, for very fine details
• Strengths:
  • Excellent on metals (steel, anodized aluminum, titanium)
  • Unique ability to create colorful effects on stainless steel and titanium
  • Good results on some dark plastics or with additives
  • High-contrast permanent markings
  • High process speed
• Typical applications in promotional:
  • Metal pens and writing instruments
  • Stainless steel tumblers and flasks
  • Metal accessories (key chains, dog tags, badges)
  • Removing colored layer on anodized aluminum

CO2 laser: the versatile solution for organic materials

• Technical characteristics:
  • Wavelength: 10600nm (far infrared)
  • Ideal for organic materials and plastics
  • Excellent interaction with glass and ceramics
• Strengths:
  • Excellent versatility on non-metallic materials
  • Excellent results on plastics of all kinds
  • Ideal for engraving on wood, leather, glass and acrylic
  • Perfect for removing painted or rubberized coatings
  • Low operating costs
• Typical applications in promotional:
  • Transparent or colored PMMA (acrylic) items
  • Glass or ceramic cups and glasses
  • Colored plastic pens
  • Items with soft-touch or rubberized coating
  • Leather or leatherette accessories
  • Wood or cork products

UV laser: precision on technical plastics

• Technical characteristics:
  • Wavelength: 355nm (ultraviolet)
  • “Cool” interaction with materials (minimizes thermal effects)
  • Especially effective on clear or transparent plastics
• Strengths:
  • Excellent results on clear or transparent plastics
  • No yellowing or charring
  • Highly accurate details
  • Excellent results on ceramics and glass
  • Gentle marking without thermal effects
• Typical applications in promotional:
  • Transparent or clear plastic pens
  • Tech accessories made of plastic materials (powerbank, stands)
  • Precision promotional items made of polycarbonate
  • Glass objects requiring the finest details
  • High-quality ceramics

Performance and results on key promotional materials

Metals in the promotional sector

Comparison table: Stainless steel (tumblers, flasks, accessories)

Technology	Evaluation	Results	Benefits	Disadvantages	Applications
Fiber MO-PA		High-contrast black marking, colorful effects	Unique possibili-ty of creating co-lors (gold, blue, green), resistance to washing	Higher initial cost	Tumblers, water bottles, metal pens, badges
CO2		Insufficient, not suitable	None	Poor interac-tion with the material	Not recommen-ded
UV		Fine surface markings	High accuracy, thermal control	Reduced speed, limited depth	Very fine details on small parts

Comparison table: Anodized aluminum (pens, key chains)

Technology	Evaluation	Results	Benefits	Disadvantages	Applications
Fiber MOPA		Precise removal of anodized layer	Excellent contrast, high speed, permanent marking	None significant	Pens, key chains, nameplates
CO2		Acceptable removal	Lower operating cost	Limited accuracy in fine details	Limited budgets, simple logos
UV		Very fine and precise details	Superior quality for miniaturized details	Lower speed, higher cost	Micro-texts, complex logos

Common plastics in the promotional sector

Comparison table: ABS (pens, gadgets, accessories)

Technology	Evaluation	Results	Benefits	Disadvantages	Applications
Fiber MOPA		Marking by carbonization	Good contrast on dark colors	Possible yellowing on light colors	Dark ABS pens and accessories
CO2		Controlled vaporization	Good results on multiple colors, clean effect	Less accuracy in the smallest details	Standard promotional items
UV		Sharp marking without thermal effects	No yellowing, high accuracy	Higher cost, lower speed	High quality pens, clear accessories

Comparison table: PMMA (transparent acrylic – key chains, trophies)

Technology	Evaluation	Results	Benefits	Disadvantages	Applications
Fiber MOPA		Unsatisfactory	None	Not suitable for the material	Not recommended
CO2		Crystal clear engraving, "icy" effect	Glossy edges, internal 3D effects, variable depth	None significant	Trophies, key chains, displays, plaques
UV		Fine surface marking	Precise details, tiny texts	Limited depth	Micro-engravings, detailed logos

Comparison table: Polycarbonate (tech accessories, keychain)

Technology	Evaluation	Results	Benefits	Disadvantages	Applications
Fiber MOPA		Variable, scarce on transparent	Process speed	Possible microfractures, poor on clearcoat	Limited to dark colored PC
CO2		Good engraving, "frosted" effect	Good contrast, thermal control	Limited definition in tiny details	Colorful PC, standard accessories
UV		Excellent on transparent and clear	No deformation, extreme precision	Higher cost	Premium tech accessories, transparent items

Other promotional materials

Comparison table: Glass (glasses, trophies)

Technology	Evaluation	Results	Benefits	Disadvantages	Applications
Fiber MOPA		Surface marking with microfractures	Process speed	Possible uncontrolled fracture propagation	Simple markings, not for premium products
CO2		Deep engraving with frosted effect	Different depth levels, excellent aesthetic effect	Requires more power	Chalices, trophies, glasses, promotional items
UV		High-precision surface marking	Finest details, microtexts	Less depth, higher cost	Luxury items with intricate details

Comparison table: Ceramics (cups, plates)

Technology	Evaluation	Results	Benefits	Disadvantages	Applications
Fiber MOPA		Permanent dark marking	Good resistance	Variable results depending on the type of ceramic	Simple markings on white ceramics
CO2		Dark marking with good contrast	Excellent resistance to washing, rapid process	Limited accuracy in the finest details	Standard mugs, plates, promotional items
UV		Precise marking with very fine details	Excellent resolution for complex logos	Higher cost, lower speed	High quality ceramics, premium items

Comparison table: Special coatings (rubberized flasks, soft-touch)

Technology	Evaluation	Results	Benefits	Disadvantages	Applications
Fiber MOPA		Excessive removal	Speed	Risk of damaging the substrate	Not recommended
CO2		Selective controlled removal	Excellent contrast, positive/negative effects	None significant	Rubberized water bottles, soft-touch products, coated accessories
UV		Precise but limited removal	Very fine details	Slower process, less depth	Complex details on small areas

Comparison table: Leather and leatherette (key chains, accessories)

Technology	Evaluation	Results	Benefits	Disadvantages	Applications
Fiber MOPA		Carbonization difficult to control	Rapidity	Risk of excessive burning	Not recommended
CO2		Different shades of brown, varying depth	Precise control of carbonization, excellent aesthetic effects	None significant	Key chains, diaries, wallets, leather accessories
UV		Surface marking with fine details	Precision in detail	Limited contrast, higher cost	Minute details on luxury accessories

Specific applications in the promotional sector

Water bottles and Tumblers: optimal technology by material

• Stainless steel water bottles:
  • Recommended Technology: MOPA Fiber Laser
  • Advantages: Permanent marking, possibility of colored effects
  • Results: Corporate logos with corporate colors, durable QR codes, customized designs
• Water bottles with rubberized/soft-touch coating:
  • Recommended Technology: CO2 Laser
  • Advantages: Precise removal of the coating by creating contrast with the underlying material
  • Results: Elegant and durable two-tone effect
• Plastic water bottles (Tritan, PE, PP):
  • Recommended technologies: UV laser for clear, CO2 for colored
  • Advantages: Marking that does not compromise the quality of the container
  • Results: Sharp and permanent customizations

Pens and writing instruments: solutions for different materials

• Metal pens:
  • Recommended Technology: MOPA Fiber Laser
  • Applications: Logos, text, custom codes
  • Advantages: Permanent engraving, possibility of colored effects on steel
• Anodized aluminum pens:
  • Recommended Technology: MOPA Fiber Laser
  • Applications: Removal of colored layer to create contrast
  • Advantages: Multicolor effect using the color of the underlying metal
• Plastic pens:
  • Recommended technology: UV laser for clear plastics, CO2 for colored
  • Applications: Corporate logos, promotional messages
  • Advantages: Permanent marking without yellowing or carbonization

Tech accessories: quality customization

• Powerbanks and electronic gadgets:
  • Recommended Technology: UV laser for technical plastics, MOPA fiber for metal parts
  • Applications: Logos, technical information, aesthetic customization
  • Advantages: Precise markings that do not compromise the aesthetics of the product
• Smartphone and tablet holders:
  • Variable technology according to material: CO2 for acrylic, UV for polycarbonate
  • Applications: Customization with company logo
  • Advantages: Precise and durable engravings
• USB flash drives and metal accessories:
  • Recommended Technology: MOPA Fiber Laser
  • Applications: Metal or plastic surface marking
  • Advantages: Permanent and wear-resistant customization

Advantages of laser marking in the promotional sector

Compared with traditional techniques

Ecological and production benefits

• Zero consumables: No ink, solvent or consumables needed
• Dry process: No use of water for cleaning or washing
• Waste Reduction: Elimination of containers, ink residues and waste materials
• Production versatility: Immediate change from one design to another without setup time
• On-demand customization: Ability to produce even small batches economically

The LASIT advanced laboratory: quality assurance

LASIT has an advanced research laboratory equipped with 27 different laser systems and specialized instrumentation to ensure optimal results on any promotional material:

• Variety of laser systems:
  • MOPA fiber lasers of different powers
  • CO2 laser for every application
  • UV nanosecond and picosecond lasers
• Instrumentation for quality testing:
  • Colorimeter for objective verification of the shades obtained
  • Salt spray chamber for corrosion resistance testing
  • Abrasion test systems to verify durability
  • Digital microscopes for detail inspection

This infrastructure makes it possible to guarantee optimal results on any promotional material, developing specific parameters for each application and ensuring the highest quality and durability of customizations.

The post Comparison of Laser Technologies on Different Materials in the Promotional Sector appeared first on LASIT - Laser marking.

During Promo Days 2025, which will be held at our headquarters in Torre Annunziata (Naples) during weeks 20 and 21 of May, participants will have the opportunity to:

• Participate in live demonstrations of laser marking systems for different applications
• Discover the potential of our laser engraving systems through concrete examples
• See our most innovative solutions in operation, from standard to completely customized
• Interact directly with our technical experts and industry specialists

Cutting-Edge Technologies on Display

Promo Days 2025 will showcase a wide range of laser marking technologies specifically selected for the promotional sector. Among the main innovations that will be presented:

• TowerSlide Dual systems with advanced automation solutions and MOPA lasers of 50W, 70W CO2, and 100W
• Revolutionary 10W UV laser for precision marking on borosilicate glass, silicone, and transparent plastics, with results impossible to achieve with traditional technologies (also available in 20W and 30W versions)
• Drinkfeeder with dual source (70W CO2 + 50W MOPA) for customizing beverage items
• New 3D scanning head with pre-scan technology that guarantees 30% higher productivity compared to traditional systems, automatically adapting to complex geometries
• Rotary table stations for maximum productivity in marking promotional items

Technical Innovations Premiering

During the event, we will premiere some revolutionary technical solutions:

• Our latest generation UV marking system that allows exceptional contrast results on transparent and colored materials, with micrometric precision and without altering the physical properties of materials
• The new 3D scanning head with advanced positioning sensors, which allow dynamically adapting the marking process to the object’s morphology, maintaining constant focus even on irregular surfaces
• The FlyPromo software with integrated artificial intelligence for automatic optimization of marking parameters based on the material

A Personalized and Exclusive Experience

The LASIT Promo Days 2025 event is conceived as a completely personalized experience. Each participating company will be assigned a dedicated expert who will guide them throughout the event, focusing specifically on their needs and applications of interest. This one-to-one approach ensures that every visitor can get maximum value from participation, with targeted demonstrations and specific technical consultation for their business.

Your experience will be curated down to the smallest detail, with 5-star treatment in every aspect of your stay:

• Private transfers from the airport to the hotel and event venue
• Accommodation in luxury hotels with sea views
• Gourmet breakfasts and coffee breaks with excellent local products
• Work lunch prepared by star chefs with specialties of the Campanian tradition
• Exclusive dinner on a seaside terrace at sunset
• Small personalized gifts created with our laser marking technologies

Customized Applications for Every Need

During the event, each laser engraving system will be presented with a specific application, demonstrating the versatility of our solutions:

A Complete Experience

The event will not be limited to technical demonstrations. Participants will benefit from:

• Complete tour of the LASIT facility to closely observe production processes
• Detailed presentations on specific solutions for the promotional sector
• In-depth sessions on FlyPromo software for automated order management
• Networking moments with other industry professionals

The daily program includes an alternation of practical demonstrations, presentations, and breaks, allowing participants to better assimilate information and ask specific questions to our experts.

An Exceptional Location

The LASIT headquarters in Torre Annunziata offers not only a cutting-edge industrial environment but also a privileged location just 100 meters from the sea. Participants will enjoy the splendid view of the Gulf of Naples and, at the end of the working day, a dinner together in the moonlight.

May also represents the ideal period to visit Campania, with mild temperatures and sunny days that make the experience even more pleasant.

How to Participate

Participation in Promo Days 2025 is by invitation. LASIT will offer participants:

• Accommodation for two nights (maximum 2 people per company, with the possibility of exceptions)
• Lunch and dinner during the event day
• Transfers from the hotel to LASIT headquarters

The post LASIT Promo Days 2025: Laser marking excellence in the promotional industry appeared first on LASIT - Laser marking.

The Traditional Context

Pad printing and screen printing, although well-established and fast in the production of large batches, are showing their limitations in a market that is increasingly demanding greater flexibility and attention to the environment. The use of inks and solvents, the need for numerous consumables, and the complexity in inventory management are aspects that are pushing the industry toward more innovative and sustainable solutions. We then delve into the new frontier of laser marking in the promotional world: the ultraviolet laser.

The Power of the UV Laser in the Promotional World

UV laser marking represents a qualitative leap forward in the promotional personalization industry, distinguished by its unique ability to interact with materials. Unlike traditional laser technologies, UV laser offers distinctive advantages in processing numerous materials.

Excellence in Marking on Plastics

The UV laser particularly excels in marking on plastic materials, where it generates higher quality results than other laser technologies. Its specific wavelength allows for high-contrast markings without damaging the underlying material, creating stunning visual effects. This process, also known as“cold marking,” minimizes the thermal impact on the material, preserving its structural integrity and aesthetic characteristics.

Incomparable Versatility

• Glass: Creation of controlled micro-fractures that produce elegant and permanent visual effects
• Silicone: Accurate and durable markings without altering material properties
• Bamboo: Unique possibility of obtaining white markings, traditionally the exclusive domain of CO2 lasers
• Polymeric materials: High-quality laser engravings with superior contrast effects

Distinctive Advantages of the UV Process

UV laser engraving is distinguished by:

• Microscopic precision in materials processing
• Ability to create surface markings without thermal penetration
• Optimal control of laser-material interaction
• Consistent and repeatable results on different types of substrates

Technical Characteristics and Performance of UV Laser Marking

Modern UV laser marking systems operate with technical features optimized for the promotional sector:

Distinctive Technical Specifications

• Power of 10W, ideal for balancing performance and longevity
• Typical operation at 30-40% of maximum power, ensuring long life of the source
• Pulse duration on the order of 10-20 nanoseconds
• Variable repetition frequency up to 100kHz
• Wavelength of 355nm, optimal for interaction with polymeric materials
• Spot size adjustable up to 20μm for ultra-precise details
• Optimized cooling system for intensive work cycles

Operational Benefits and Sustainability

There are many operational benefits of adopting the UV laser:

• Zero consumables: complete elimination of inks and solvents
• Eco-sustainable process: no production waste
• Minimum maintenance: due to the absence of consumable parts
• Total flexibility: instant design change without setup costs

The environmental sustainability of the UV laser marking process is a key aspect: the absence of consumables and energy efficiency help to significantly reduce the carbon footprint of the entire production process.

Future Prospects and Technological Developments

The future of UV laser technology in the promotional sector looks rich in developments:

• Optimization of thermal management
• Development of new control algorithms
• Implementation of advanced vision systems
• Integration with industrial automation systems

UV laser technology is redefining standards in the promotional items personalization industry. The combination of advanced technical performance, application versatility, and environmental sustainability makes it a strategic choice for forward-looking companies. Continued technological evolution and expansion of possible applications suggest that we are only at the beginning of a revolution that will redefine standards in the promotional industry.

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The CO2 laser represents one of the most established and reliable technologies in the promotional item marking industry. Its ability to work effectively on a wide range of materials, from paper and wood to plastics and glass, makes it an extremely versatile tool. In the promotional sector, the CO2 laser has become particularly popular for personalization of wood and bamboo items, where it offers high-quality results with low operating costs, and for marking flasks and containers, where the precision and flexibility of the laser process ensure superior results compared to traditional techniques.

The Different Wavelengths: 10.6μm and 9.6μm

In the world of CO2 lasers, the choice of wavelength is a critical factor in optimizing results. The two main options available on the market are the 10.6-μm and 9.6-μm lasers, each with distinctive characteristics that make them more or less suitable for specific applications.

The 10.6-μm laser represents the mainstream choice in the industry. Its technological maturity results in greater reliability and lower acquisition and maintenance costs. Its wide availability of spare parts and high application versatility make it particularly attractive to companies seeking a proven, cost-effective solution.

The newest 9.6-μm laser on the market is distinguished by advanced technical features. Better absorption on specific materials and higher processing accuracy make it ideal for applications requiring superior thermal control. The ability to operate at lower powers to achieve the same results is a significant advantage in terms of process control.

Specific Applications and Choice of Wavelength

Wood and Bamboo Processing

In the area of wood materials processing, the 10.6μm laser emerges as the preferred choice. Its ability to make deep marks with excellent natural contrast, coupled with faster processing speed and better cost-effectiveness, makes it particularly suitable for this type of application. The technology enables high-quality results while keeping operating costs low, a crucial factor in the promotional industry.

Bottles and Containers

The choice of wavelength becomes more critical when it comes to personalizing flasks and containers. For wooden flasks, the 10.6μm laser continues to offer excellent results, allowing deep marking that improves aesthetically as the material ages.

The situation changes significantly when it comes to rubber-coated flasks. Here, the 9.6μm laser shows significant advantages due to its better control of surface ablation and reduced risk of thermal damage. The superior precision allows for more defined and controlled results, particularly important when working on special coatings.

Plastics and Treated Surfaces

In the field of plastics and treated surfaces, the 9.6μm laser demonstrates its technical superiority. The improved absorption of the laser beam enables sharper, more precise markings with superior process control. Reducing the risk of thermal damage is especially valuable when working on heat-sensitive materials.

Technical Comparison of Systems

Conclusions

The choice between 10.6μm and 9.6μm CO2 lasers in the promotional sector must be based on a careful analysis of specific production needs. For general applications and processing on wood and bamboo, the 10.6μm laser is still the most versatile and cost-effective choice. The 9.6μm laser, on the other hand, is ideally suited for specialized applications where superior thermal control and greater marking accuracy are required, such as in the case of surface treatment and heat-sensitive materials.

The evolution of the promotional market, with increasing demand for increasingly sophisticated customization, suggests that both technologies will continue to coexist, each optimized for its specific applications of excellence.

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When we speak of efficiency and flexibility in the world of Laser Marking and its infinite applications, we certainly place fiber lasers in first place. In today’s market, these are by far the most used in companies that use this technology.

What is the fibre optic laser?

The fibre laser represents one of the most advanced and widely used technologies in the field of industrial laser marking. This particular type of laser uses an optical fibre doped with ytterbium as the active medium to generate the laser beam. Unlike conventional lasers, the fibre laser is characterised by its outstanding energy efficiency and the superior quality of the light beam produced. In the specific context of laser marking, this technology has revolutionised the industry with its millimetre accuracy and ability to work on a wide range of materials, such as metals and plastics. The fibre laser marking system is characterised by its compactness, minimal maintenance required and long service life, which can exceed 100,000 working hours. These features, coupled with the high process speed and the ability to produce high-quality permanent markings, have made the fibre laser the preferred choice for numerous industrial applications, from product traceability to component customisation.

How does it work?

The fibre laser belongs to the solid-state laser family and is distinguished by its innovative operating principle. Unlike conventional lasers, the laser beam generation process starts with a low-power ‘seed’ laser, whose beam is progressively amplified through a series of ytterbium-doped optical fibres. Amplification occurs thanks to pumping diodes, which supply energy to the fibre through direct coupling, eliminating the inefficiencies caused by air gaps present in conventional systems.

The structure of the fibre laser is characterised by its integrated ‘all-fibre’ architecture, where all critical components – the active fibre, fibre combiners and pump laser diodes – are directly connected to the main fibre via permanent splices. This configuration represents a significant advantage over diode or lamp lasers, where the components are separate and mounted on a platform with mechanical alignments that can deteriorate over time.

The technical performance of the fibre laser is remarkable: it operates at a wavelength of 1064 µm and, thanks to its extremely small focal diameter, achieves an intensity 100 times higher than CO2 lasers of the same power. The electro-optical conversion efficiency exceeds 30%, an exceptional value that translates into low energy consumption in the order of a few hundred watts. The cooling system, simpler than conventional lasers, contributes to the overall reliability of the device, guaranteeing an operating life of more than 100,000 hours.

The laser beam generation process can be schematised in three main steps:

• Initial generation: the seed laser produces a low-power base beam
• Amplification: the signal passes through ytterbium-doped fibres, where pumping diodes provide the energy required for amplification
• Emission: the laser beam, now amplified and highly focused, is emitted with optimal characteristics for marking

What does LASIT offer?

LASIT offers a wide range of fibre lasers, differing in performance and power. From the traditional fibre laser, which is suitable for marking all metals and most plastics, we move on to the MOPA and Picosecond variants.

1. The MOPA laser is distinguished by its ability to control pulse duration. This favours the marking of plastic components while avoiding burning and smearing. On metal, the main advantage is the possibility of marking in colour.
2. The Picosecond laser has three times the speed of the conventional laser. It is distinguished by its black, impalpable, reflection-free markings, which are particularly used in the medical industry. It is also capable of marking on glass, where many lasers fail.

The fibre lasers supplied by LASIT can be integrated into various marking systems, either stand-alone or in-line.

Application fields of the fibre laser

The fibre laser marks all metals and most plastics. If we take into account its MOPA and Picosecond variants, the range of possible applications increases even further to cover most requirements. Consequently, we can say that the fibre laser is suitable for:

Automotive

We mark metal, cast and die-cast components with indelible DMC codes, carrying out marking durability tests to ensure traceability. For automotive lighting plastics, LASIT produces systems for cutting sprues and aesthetic marking of interiors and headlights.

Household appliances

We brand oven panels and small appliance components such as buttons and knobs.

Electronics

We brand all electronic components, such as circuit breakers, residual current devices and relays.

Hydraulics

We directly mark small valves and pumps, and metal plates to be affixed to components that cannot be placed on the machine or in-line.

Promotional

We are experts in the automatic marking of metal and plastic gadgets, from key rings to pens, mugs and water bottles, for which we have developed specific systems.

Faucets

We mark the surface of the faucet, guaranteeing the durability of the marking and thus the resistance of the manufacturer’s brand even on surfaces exposed to wear and tear.

Medical

We mark plastic and metal instruments and prostheses, in particular the latter with Picosecond technology that guarantees indelible, black, impalpable and non-reflecting marks.

Tools

We brand all tools, from cutters to blades, guaranteeing the permanence of the engraving over time.

Moulding plastics

With the fibre laser we can mark all components from moulding machines, regardless of shape and colour.

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