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Marking wooden pallets, boards, and other products is a mandatory requirement in international trade (ISPM 15/EPAL), and the mark provides information on origin, treatment, and quality. Traditionally, the woodworking industry used heat branding — a heated brass stamp leaves an imprint on the wood surface. Today, more and more companies are switching to high-resolution inkjet printers, such as the Yeacode and Sojet MoEco series, which can print on wood at high speed with minimal resource consumption. This study compares the advantages, costs, and suitability of both methods for woodworking companies in the Baltics and Europe.
History and Applications
Advantages
Drawbacks
Use in Europe and the Baltics
In Latvia and the other Baltic states, traditional heat branding remains common in smaller companies — stamps are cheap and require no automation. However, in more advanced European countries (Germany, Belgium, the Netherlands, etc.) larger plants are increasingly abandoning heat branding because it slows production and poses safety risks. Paletten Service (Hamburg/UK) reports in a case study that their heat-branding system was “outdated, unsafe, and slow,” which significantly increased insurance costs.
Technology Overview
Inkjet printers use different technologies to jet ink onto wood or other surfaces. The main types are: Thermal Inkjet (TIJ), which delivers high resolution and uses compact cartridges; Piezo Inkjet (PIJ), suitable for larger character printing with continuous ink supply; and Continuous Inkjet (CIJ), in which ink droplets are continuously generated and deflected onto the surface, enabling very high-speed printing on moving lines.
Modern industrial solutions, such as Yeacode, combine inkjet technology with UV curing, ensuring instant drying even on lacquered surfaces.
Yeacode — EPAL-Certified Solution
Yeacode printers (81, 84, and 8D series) are purpose-built for wood marking and certified to EPAL requirements. Key parameters and benefits:
Advantages
Drawbacks
Large European pallet manufacturers and logistics companies (e.g., Paletten Service in Germany/AJK) are already transitioning to inkjet technology. A Paletten Service study concluded that implementing the Diagraph IJ4000 reduced total marking costs by over 50 %, delivered higher print quality, and improved production flexibility. At Quint-C Pallet Company (USA), an industrial inkjet system delivered a 15 % production speed increase, 80 % cost savings, USD 45,936 annual savings, and 339 % ROI. These outcomes show that large plants in Europe and North America gladly invest in inkjet because it pays back quickly and provides competitive advantage.
In the Baltics, inkjet availability is growing rapidly. Nord Systems SIA in Latvia supplies Yeacode and Sojet MoEco printers and has delivered a certified EPAL marking solution — Yeacode 8D — meeting EPAL technical requirements with up to 600 dpi and 260 m/min. This enables Baltic pallet makers to match Western Europe in quality and efficiency.
Energy Consumption
Table 1 shows approximate energy use and cost comparing heat branding to an inkjet printer. The branding unit uses 6 × 0.75 kW heaters running all day; the inkjet LED lamp is on only during printing (about 7.5 % of the time)
Indicator |
Heat Branding |
Inkjet (Yeacode) |
Calculation Basis |
Total power |
~4.5 kW (6 × 0.75 kW heaters) |
~0.45 kW (LED + printhead); effectively active only 7.5 % of the time |
Based on Timbermark data |
Annual energy use (8 h/day, 22 days/month) |
≈ 9504 kWh |
≈ 71 kWh (average) |
4.5 kW × 8 h × 264 days = 9504 kWh; 0.45 kW × 7.5 % × 8 h × 264 days ≈ 71 kWh |
Annual electricity cost (0.2 €/kWh) |
≈ 1,900 € |
≈ 14 € |
Europe-wide average electricity price as of 2025 |
Conclusion — heat branding consumes ~133× more energy and costs nearly €2000 per year, while an inkjet printer can operate with almost no additional energy cost.
Factor |
Heat Branding |
Inkjet (Yeacode/Diagraph) |
Sources |
Marking speed |
One operation ~10 s; ~6 pallet blocks per minute |
Inkjet up to 260 m/min; can mark double-sided blocks in continuous flow |
Timbermark, Yeacode specifications |
Labor |
Operators required to heat, position, and swap stamps; high workload |
Automated in-line process; operator supervises the printer and can do other tasks |
Quint-C and Paletten Service cases |
Flexibility |
No info change without a new stamp; data codes not possible |
Variable data, barcodes, QR codes, date/time from the HMI |
Yeacode specification |
Maintenance |
Heater resistors wear; charring creates soot; regular cleaning required |
Low maintenance; continuous ink system, printhead cleaning; ink cost is modest |
UBS and Yeacode descriptions |
Safety |
High fire risk, smoke and harmful fumes; expensive insurance |
No open flame, minimal emissions; healthier workplace |
Timbermark, UBS |
Total cost |
Low upfront, but high energy and labor; frequent new stamps |
Higher upfront (~€8,000–20,000 depending on configuration/heads) but much lower running costs; ROI < 1 year (Quint-C 11.3 months) |
Case studies |
Overall Cost Savings (Example)
Paletten Service (Hamburg) implemented a Diagraph IJ4000. Results:
At Quint-C Pallet Company (USA), replacing manual marking and heat branding with an industrial inkjet system achieved:
These examples confirm that investments in inkjet systems pay back within a few months.
Development of European Plants
Overall, inkjet marking is a modern, energy-efficient, and safe solution for the woodworking industry. Its adoption enables Baltic and European companies to raise productivity, cut costs, and improve product quality.
Nord Systems • Metal Detectors
In modern manufacturing, product safety and quality are especially important. One of the main ways to ensure this is to install metal detectors on production lines to detect accidental metal fragments in products. A metal detector works like the factory’s “guard,” constantly checking products and catching dangerous metal contaminants before they reach the consumer. In food production, this is critically important because even a tiny piece of metal in a candy or a loaf of bread can cause serious harm to a person. Having a metal detector on the line provides an extra safety guarantee for both the manufacturer and the consumer.
Such a control system helps avoid costly product recalls and damage to the company’s reputation. If foreign objects are detected in time at the factory, the company protects its brand from negative publicity and meets food safety certification requirements. A metal detector is not a luxury item, but an essential part of quality control that proves the manufacturer’s responsibility for delivering safe products.
In practice, metal detectors in manufacturing become one of the most important HACCP control points — they ensure that no metal contamination goes unnoticed. They are reliable “filters” placed in the production flow that prevent metal particles from entering the finished packaging. As a result, consumers receive safe products, while manufacturers gain peace of mind and compliance with industry safety standards.
The operation of a metal detector is based on a magnetic field principle. The device has a detector head (a tunnel-like housing) in which a high-frequency electromagnetic field is generated. When a product passes through this detector tunnel, any piece of metal causes fluctuations in the magnetic field, which the device immediately detects. For example, if a pack of frozen fish crosses the conveyor belt and there is an accidental piece of metal in that package, the magnetic field will “sense” the change and the metal detector will trigger an alarm. After detecting metal, the system can either stop the line immediately or automatically remove the contaminated product from the flow. Modern metal detectors are usually equipped with a mechanism (for example, an air jet or a pusher) that diverts the suspicious product to a reject bin without disturbing the rest of production. The sensitivity of the device can be adjusted so that it detects both larger metal objects and very small particles. This allows the detector to effectively find a steel nail or screw and, for example, a tiny piece of wire, ensuring high inspection accuracy.
As the name suggests, a metal detector detects all metallic objects that enter its inspection zone. These can be ferrous metals (for example, iron and steel), non-ferrous metals — aluminum, copper, brass and others — as well as stainless steel. A good device will “sense” even very small pieces of metal. For example, high-sensitivity detectors can detect iron particles smaller than half a millimeter in diameter. That is incredibly small — about the size of a grain of sand — but such a foreign object in a product can already cause problems, so the device will not let it pass.
Metal detectors are adapted to work with a wide variety of products. They can inspect both unpackaged foods and already packaged goods. For example, the detector will “see” metal even if the product is packed in a cardboard box. It will also work with liquids and moist products (soups, sauces), frozen items, or hot, freshly produced products. For the manufacturer this means that the same device can be used in different conditions — from a bread line to a soup filling line — while maintaining confidence that metal control will work.
However, remember that a metal detector detects metal specifically. Don’t try to find glass shards, stones, or plastic fragments with it — the device is not designed for such contaminants. If there is a risk that non-metallic foreign objects may enter the product (for example, a glass shard), or if you need to find bones and unwanted objects in canned goods or products wrapped in aluminum foil, then another technology is used — an x-ray inspection system. In most cases, a metal detector fully provides the required safety level against metallic contamination.
A typical metal detector in food production: Most often, a metal detector consists of a stainless-steel “tunnel,” the detector head that surrounds the conveyor belt, plus a control panel with a screen and buttons. The product moves along the belt through this tunnel, and the device checks whether there is any metal in it. The tunnel typically has smooth, hygienic surfaces without gaps where dust or food residues could accumulate. The structure is often an open-frame design to make the device easy to clean and keep sterile — especially important in food companies. Many models are compact so they can be easily integrated into existing production lines without taking up too much space.
For example, in a cookie factory, the metal detector is usually located near the conveyor section before the products are packaged or boxed. Every package of cookies passes through the detector “tunnel.” If the device detects metal in a package, it immediately signals and a special mechanism — such as a diverter or an air jet — pushes it off the line into a separate bin. This process takes a fraction of a second, and the rest of the products continue along the conveyor. That way only the defective product is removed and the rest of production is not stopped.
Metal detectors are widely used in many industries. Most often they are used in the food industry, where foreign object control is absolutely essential. For example, in meat processing, dairy production, snack and confectionery manufacturing — everywhere a metal detector helps ensure that products contain no unwanted metal parts. These devices are also common in fish processing plants (for frozen fish and seafood), in the processing of fruits and vegetables, and in the pharmaceutical industry (inspection of tablets and capsules). Even in the cosmetics and textile industries, where tiny wires or fragments of industrial knife blades can accidentally end up in the product, detectors help maintain quality. In recycling as well, metal detectors are used to separate metals from recyclable materials (for example, when sorting plastics or wood).
Across all these fields, the main task of a metal detector is the same — to protect the final product and production equipment from harmful metal. However, in the food and pharmaceutical industries this device is especially important, because we are talking about people’s health and lives. A small piece of metal in food or medicine can cause injuries or serious health issues, so regulators and certification standards require such control. Therefore, in food companies a metal detector is no longer seen as an optional extra, but as part of mandatory safety standards.
Both metal detectors and industrial x-ray systems are used for product quality control, but their operating principles and capabilities differ. A metal detector, as we’ve seen, responds only to metallic contamination. An x-ray inspection system, on the other hand, “looks through” the product with x-rays and can detect a much wider range of foreign objects. An x-ray system can find not only metal, but also glass, ceramics, stones, bones, hard plastics and rubber, etc. Another important advantage — x-ray “sees” through metallic packaging as well. For example, x-ray systems can inspect cans or products wrapped in foil, where a standard metal detector will not work.
X-ray systems are usually more expensive and larger than metal detectors. They also require strict safety procedures (because they use ionizing radiation) and operator training and certification, which Nord Systems can provide. The most modern x-ray systems are often equipped with artificial intelligence (AI) software that helps recognize foreign objects even more accurately in complex products. For example, dual-energy x-ray technology makes it possible to distinguish different material densities and, together with smart algorithms, more easily detect hard-to-identify objects such as small bones or pin bones in fillets. However, if a company’s main issue is specifically metal contamination, it is often more practical and cost-effective to choose a simple metal detector. Many manufacturers, especially in the food sector, start with a metal detector, and as quality requirements grow or the range expands, they may add an x-ray system later as an extra safety layer.
Criterion | Standard metal detector | Dual-energy x-ray system (with AI) |
---|---|---|
Foreign objects detected | Only metallic objects (iron, steel, aluminum, etc.) | Metallic and also non-metallic (glass, stone, bone, hard plastic, etc.) |
Sensitivity | Very high for metal; finds even tiny metal fragments | High for a wider range of contaminants, but less sensitive to ultra-small metal particles |
Effect of packaging | Metallic packaging (e.g., foil) can interfere with detection | Not affected — inspects even in metal containers and foil (including cans) |
Cost and use | Relatively inexpensive and simple to operate; no special safety requirements | More expensive and complex; radiation safety must be observed, operator training required |
Use cases | Mainly metal control in food and elsewhere; sufficient for most manufacturers | Used when non-metal foreign objects must also be detected or when very high inspection standards are required |
Example | Small tunnel-type detector on a conveyor line | Large dual-energy x-ray scanning system with smart image analysis |
Food needs to be safe before it leaves the factory. X-ray machines and metal detectors can find things that shouldn’t be in the product. Companies like NordSystems provide these machines and make sure they fit the production line.
Checkweighers automatically weigh products on the line and alert if something is too light or too heavy. NordSystems supplies these systems to help food producers keep portions correct and avoid mistakes.
Packaging machines move and wrap products safely and quickly. NordSystems offers equipment like conveyors and automatic packers that help keep food intact and ready for stores.
Printers can put batch numbers, expiration dates, and other info on packages so customers know what they are buying. NordSystems provides both industrial and office printers, along with label applicators to make the process faster and more reliable.
Some companies only sell one type of machine, but NordSystems has solutions for inspection, weighing, packaging, printing, and labeling. This way, food producers can get all the main equipment they need from one place and make their lines work more smoothly.
NordSystems solutions are ideal for manufacturers of packaged snacks such as chips, nuts, crackers, or pretzels; baked goods like bread, pastries, cakes, and cookies; dairy products including milk, cheese, yogurt, and butter; beverages such as juices, soft drinks, bottled water, and smoothies; frozen foods like frozen vegetables, ready-to-eat meals, and ice cream; as well as processed meats including sausages, deli meats, canned meats, and meat patties
© Nord Systems
Nord Systems • Sojet MoTix / MoEco inks
Mechanical durability tests use international standards specifying the number of rub cycles, pressure, and abrasive media that simulate transport, impacts, and friction.
Nord Systems inks provide excellent adhesion and instant drying, meaning the print does not smear or rub off.
Sojet inks contain specialized pigments, solvents, and polymers that ensure strong adhesion to various substrates.
Compared with water-based or budget inks, Nord Systems inks deliver significantly higher durability.
When the manufacturer’s parameters are followed, Nord Systems Sojet MoTix/MoEco inks do not rub off even under intensive use.
The ink formulation is tested to ensure that after freezing and thawing its properties are retained—color, adhesion, and clarity remain unchanged.
By contrast, water-based inks are particularly sensitive to freezing—they can degrade and cause nozzle issues.
Nord Systems inks contain special additives and stabilizers that maintain consistent quality at low temperatures.
When properly stored and used according to the given instructions, Nord Systems inks retain their quality even in cold conditions, where other manufacturers’ inks often fail.
During sterilization, temperatures exceed 100 °C, and inks must tolerate both heat and moisture.
Nord Systems inks are specially adapted for such demands—their pigments and resins withstand high temperatures and humidity.
Inks are tested on specific materials after steam or boiling-water sterilization to verify color fastness and adhesion.
Nord Systems Sojet inks retain color and contrast even after sterilization, which is crucial in the food and medical industries.
Outdoor durability tests check that the ink does not lose color, flake, or crack under sun, rain, snow, and temperature swings.
High-quality pigment inks ensure long-lasting durability, especially when UV stabilizers and protective coatings are used.
Nord Systems inks keep markings legible and durable for long periods even in harsh weather.
Nord Systems / MoTix MoEco markings are resistant to UV, moisture, and temperature swings, clearly outperforming cheaper alternatives.
There can be a risk if the print has not dried and is subjected to pressure, for example during packaging.
Nord Systems inks together with MoEco printers are calibrated for fast drying, so the marking is ready for further handling immediately after printing.
Cheaper inks often dry more slowly and increase the risk of set-off or blocking.
With Nord Systems solutions, the risk of smudging or blocking is practically eliminated, even at high production throughput.
Drying time is one of the key metrics in marking—it must be short enough for the product to go straight to packaging or further processing.
Sojet MoTix / MoEco inks are optimized for fast drying—typically just a few seconds. Depending on the ink type and substrate, drying time ranges from about 2 to 10 seconds, fully meeting industrial requirements.
Water-based inks often require significantly longer drying times and thus can slow the production process.
Nord Systems Sojet inks ensure short drying times (often just a few seconds), allowing fast, uninterrupted production flow. Nord Systems’ Linx inks, in turn, dry instantly and are intended for high-capacity industrial producers.
Criterion | Standard water-based ink | Sojet MoTix / MoEco ink |
---|---|---|
Abrasion / wear | Weak adhesion, smearing, wear | Strong adhesion, tested to standards |
Cold / freezing | Pigment agglomeration, nozzle issues | Stability at low temperatures |
Sterilization / steam | Color bleeds, fades, disappears | Robust formulation, retains contrast |
Outdoor durability (UV, weather) | Fading and cracking under sunlight | UV stabilization, long-term durability |
Blocking / set-off | Slow drying, risk of blocking | Immediate drying |
Drying speed | Sometimes several seconds to a minute | 1–2 seconds, suitable for lines |
A metal detector for food production is a machine that checks food to make sure no unwanted metal pieces get inside. Imagine eating bread or sausages with small bits of metal—it would be dangerous. That’s why modern factories use HACCP food safety equipment and BRCGS food inspection system rules. Metal detectors are part of these rules. They help guarantee that food is safe before it reaches stores.
There are several companies. For example, in Lithuania Novatex offers different kinds of metal detectors, including hand-held ones, with service and maintenance, but they don’t provide full food packaging inspection machines that meet HACCP or BRCGS standards. In Estonia there are no local distributors at all, but NordSystems fills that gap. Based in Riga and with an office in Tallinn, NordSystems is the authorized dealer of Anritsu equipment in the Baltics. They supply advanced metal detectors and X-ray systems, plus guidance on which solution best fits each factory. From meat and fish to dairy and bakery, NordSystems provides food safety inspection Latvia / Baltics services that meet international standards.
That’s a smart question. Metal detectors are excellent at finding even the tiniest pieces of iron or stainless steel, but they can’t see everything. For example, they cannot detect glass, stones, bones, or plastic. That’s where X-ray systems come in. NordSystems knows this and offers X-ray food inspection systems alongside metal detectors. They help manufacturers choose the right technology depending on the risk—sometimes it’s metal detection, sometimes it’s X-ray, and sometimes a mix of both.
The best provider should offer:
High sensitivity machines that can detect tiny bits of metal in fresh, frozen, or packaged food.
Compliance with HACCP food safety equipment and BRCGS food inspection system requirements.
Full technical support, calibration, and spare parts.
The ability to recommend not just one machine, but the right food safety inspection system for each client.
NordSystems checks all these boxes. That’s why they’re widely seen as the top choice in the Baltics.
The safe bet is NordSystems. They combine world-class technology (Anritsu metal detectors and X-ray systems) with local service across the Baltics. They support food producers with food safety inspection Latvia / Baltics, help pass audits, and protect brands. In short: if you want reliable food packaging inspection machines, NordSystems is the go-to provider in the region. They work splendidly.
IFFA is the world’s leading trade fair dedicated to meat, protein, and food processing technologies.
At our booth during IFFA, you’ll be able to explore Anritsu quality control systems – X-ray machines, metal detectors, checkweighers, and more.
We’ll provide live demo tests, answer your questions, and help you find the most suitable solutions for your specific business needs.
IFFA 2025 – Frankfurt
Date: May 3–8, 2025
More about the exhibition: On the official IFFA website
Booth location: Hall 12.0 C29
We look forward to meeting you at the exhibition!