Industrial Laser Marking Systems / Laser Markers
Laser Labeling
Laser labeling is the process of using a laser marking machine to put a label on a product. The label can be used for traceability, identification, or adding regulatory information. Replacing a labeler with a laser can have benefits across many aspects of production.
Using a laser marking machine rather than a standard inkjet printer for labeling will improve value with time, money, and production. Laser markers decrease production time, increase permanency of labels, and decrease use of extra materials.
In addition, manufacturers using laser markers don’t have to deal with consumables such as physical labels, adhesives, or industrial ink. Laser labeling machines are a versatile innovation in the labeling world that can help reduce waste pollution, various costs, and a long list of other benefits, ranging from the manufacturers to the end consumer and even the environment.
Below, we will discuss the differences between laser marking and standard labeling, the characteristics of each, and the best machines to use.
Laser Labeling Machine
KEYENCE offers a UV laser marking machine that marks high-contrast, damage-free, clear labels. To ensure ease of use, this UV laser marking machine contains easy-to-use software that controls the marking. The software can be programmed based on font, size, contrast, materials, and more, depending on your specific requirements.
3-Axis UV Laser Marker MD-U Series
The UV Laser MD-U Series is the world’s first 3-Axis Control UV laser. It uses a UV laser and 3-Axis Control to mark a variety of shapes, sizes, and materials. The 3-Axis Control marks uniformly and without distortion. It achieves this by using an edge-to-edge laser uniform line width rather than cylindrical lines.
Due to the dramatically shortened wavelength, the MD-U’s beam can be absorbed by even the most highly heat-resistant materials. It marks with high contrast and permanent marks that do not fade over time. It leaves a clean mark that aesthetically prints any label needed. The MD-U can be used across industries and various needs. It automatically adapts, even with a surface with multiple materials, such as PCBs, battery packs, and lighting equipment.
Comparison of Laser Labeling with Traditional Labeling Methods
When you stack up laser labeling against the capabilities of traditional methods, the differences are glaring. This isn't to say traditional methods are obsolete, but laser labeling is optimal for manufacturing from many standpoints. Some of the main comparisons between the two labeling methods can be found below.
| Focal Point | Laser Labeling | Traditional Labeling |
|---|---|---|
|
Permanency
|
Laser Labeling
Laser labeling guarantees permanency throughout the product's lifecycle. It is also more resistant to external stressors such as light and temperature.
|
Traditional Labeling
Known to eventually start to peel and fade with time. Due to the fading print, it can be hard to read vital information.
|
|
Efficiency
|
Laser Labeling
Laser label machines require very little, to no, maintenance and have no consumables to track or refill.
|
Traditional Labeling
Required to handle consumables, causing downtime in the production process. Switching rolls and ink cartridges are common to this process.
|
|
Cost-Effectiveness
|
Laser Labeling
With no need to purchase physical labels, laser labeling is very cost-effective and reduces consumable waste and downtime.
|
Traditional Labeling
More expensive due to ongoing consumable purchases. Excess labels can also waste time and money.
|
|
Visual Quality
|
Laser Labeling
Much more pristine and clear in readable quality. Fewer chances for mistakes or errors in the print.
|
Traditional Labeling
High-quality traditional labeling is possible but susceptible to smudging or rubbing off.
|
|
Material Compatibility
|
Traditional Labeling
Label adhesives are limited to some degree. They don’t work on every material, even with varying types of adhesive. They’re also bound to lose adhesive strength against the material over time.
|
This table could lay out many other unique differences, but these points provide a comprehensive look at the comparisons. Traditional labeling has been relevant for decades and will be for many more years. Eventually, the evolving nature of labeling and laser marking technology will put conventional methods on the back burner for many people in the manufacturing business.
Advantages of Laser Labeling Machines
While comparisons are important, it can be more helpful to review the advantages of direct laser engraving and marking over traditional means. These upsides are pretty universal, regardless of the application.
Some of the most prominent advantages of laser labeling technology include:
- Readability
- Adaptability to varying surfaces
- Reduced downtime and maintenance
- Better cost-effectiveness
- Unmatched permanency
- Better production integrations
- Lesser environmental impact
The list of laser marking advantages goes far beyond this, so it is evident that laser marking will continue revolutionizing labeling on many scales. Manufacturers have many angles to consider regarding production, with product authentication and traceability being high on the list.
The Role of Labeling and Laser Marking in Product Authentication and Traceability
Laser marking machines also improve product authentication and traceability. Laser labeling systems guarantee uniformity and quality from origin to product integrity and other important details.
Providing a digital footprint for each product that doesn't waver over time will always benefit consumers as well as the manufacturer. These details are equally crucial regarding some aspects of laser labeling requirements within the industry on a local, national, and international level.
Labeling and Laser Marking Characteristics
Laser markers operate differently than standard labeling systems. Ink labeling systems need extra materials to minimize damage to the product and get an intense mark. These extra materials are usually ink ribbons or thermal heads. Because of the precision of a laser, labeling with a laser marker only requires a UV laser machine.
UV lasers work by passing a standard wavelength through two crystals, which creates a thin laser with high absorption. The high absorption is not synonymous with high heat, a UV laser is gentle on materials and can independently mark without needing protective materials. Because of the high absorption rate, the marks are permanent and do not fade over time.
Inkjet labeling machines were standard, but new laser marking technology outperforms these machines.
FAQs
Is Laser Labeling Permanent?
Yes. Laser labeling is generally permanent because the mark is created directly on the material surface rather than applied with ink, adhesive, or a separate label. It is commonly used for traceability, identification, and regulatory information, but durability depends on the material, laser type, mark depth, and exposure to abrasion, chemicals, heat, or UV light.
Can Laser Labeling Replace Printed Labels?
Yes. Laser labeling can replace printed or adhesive labels when the mark can be applied directly to the product or packaging and still meet readability, durability, and compliance requirements. It can reduce consumables like labels, ink, and adhesives while creating permanent marks for traceability, identification, and regulatory information. The right laser depends on the material, mark contrast, production speed, and scanning requirements.
Can Laser Labeling Create Barcodes and QR Codes?
Yes. Laser labeling can create barcodes, QR codes, Data Matrix codes, serial numbers, and text directly on products or packaging for traceability and identification. The code must be matched to the material, marking area, contrast requirements, and scanner setup to ensure reliable readability. Data Matrix codes are often used for small industrial parts, while QR codes are useful for customer-facing or digital-link applications.
Is Laser Labeling Suitable for Curved or Uneven Surfaces?
Yes. Laser labeling can be used on curved or uneven surfaces when the system can maintain the correct focus across the part. 3-axis laser markers, autofocus, or rotary fixtures may be used to mark cylinders, slopes, steps, and irregular shapes with less distortion. The best setup depends on the part geometry, marking area, code size, and readability requirements.
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