What is a batch coding machine?
A batch coding machine is a device used to print batch numbers, expiry dates, production dates, or other variable information onto packaging or products. These machines help manufacturers keep track of when and where products were made – which is essential for traceability, quality control, and legal compliance, especially in industries like food and drink, cosmetics, and pharmaceuticals.
Think of a batch coding machine as a printer built specifically for the manufacturing world. It doesn’t just sit on a desk – it’s designed to work alongside fast-moving production lines, often in quite tough environments with dust, moisture, heat, or cold.
There are different types of batch coding machines, but the most common fall into two groups: inline coders and offline coders.
Inline Batch Coding Machines
These are installed directly onto production lines. As products move along the conveyor belt, the machine prints batch codes on the packaging – whether it’s bottles, jars, cans, boxes, or pouches. Continuous inkjet (CIJ) printers, like those in the alphaJET range from Koenig & Bauer Coding, are widely used in these setups. They’re fast, reliable, and can print on all sorts of materials including plastic, glass, metal, and flexible film.
Inline coding machines are ideal for high-speed, high-volume environments. They usually run automatically once they’re set up and are often linked to other machines in the production line.
Offline Batch Coding Machines
Offline systems are used when you want to code packaging before it gets filled. A good example is using a carton feeder like the udaFORMAXX, which feeds flat cartons or sleeves through a printer – usually a thermal inkjet (TIJ) coder. This is great for smaller runs or for items that are hard to code while moving.
Offline machines give you flexibility and are often used in slower or more manual production setups.
What do they print?
Batch coding machines can print a wide range of information, including:
- Batch or lot numbers
- Expiry or use-by dates
- Production dates and times
- Barcodes or QR codes
- Serial numbers or custom text
Some systems can even pull this data automatically from your production software, so you don’t have to enter it manually every time.
Why it matters
Having the right batch code on your packaging is critical. It helps you meet industry regulations, respond quickly in case of a recall, and reassure your customers that your products are traceable and safe.
In short, a batch coding machine is a must-have tool for modern manufacturing. It might not be the flashiest bit of kit on the factory floor – but it’s one of the most important.