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Cardboard Laser Marking for Packaging Traceability

CO₂ laser technology is commonly used to mark compatible cardboard and paperboard packaging surfaces. It can apply variable information during packing, dispatch or secondary packaging operations.

Typical applications include:

  • Batch numbers, production dates and best-before dates.
  • Product references, order data and logistics information.
  • Barcodes, DataMatrix and QR codes.
  • Serialisation and unit identification.
  • Logos, symbols and variable promotional information.
  • Direct coding on corrugated boxes and paperboard packaging.

Why Choose Direct Laser Coding on Cardboard?

No Ink or Ribbons for Variable Coding

Laser marking creates the code directly on the packaging surface. This can reduce the inks, ribbons and related maintenance associated with variable-data printing.

It may also reduce the use of labels when they are only required to add a variable code. Labels that are needed for shipping, brand information or regulatory content may still be required.

Legible Codes for Identification and Traceability

CO₂ laser systems can mark text, graphics and 2D codes directly onto cardboard packaging. The code size, location, contrast and reading conditions should be defined to ensure reliable scanning throughout the supply chain.

When a GS1 2D code is required, its content and quality criteria should follow the relevant GS1 barcode standards.

Integration Into Packaging Lines

Laser coders can be integrated into automated packaging lines to code boxes as they move through production or dispatch. The configuration can be adapted to the available space, conveyor speed, product handling and required code position.

Different Cardboard Finishes Require a Marking Test

Not all cardboard reacts in the same way to laser energy. Brown corrugated board, recycled cardboard, kraft paperboard, coated surfaces and pre-printed cartons can produce different contrast and surface effects.

A test on the actual packaging helps confirm:

  • Mark contrast and appearance.
  • 1D and 2D code readability.
  • Surface effect on printed or coated areas.
  • Required cycle time and line speed.
  • The most appropriate marking position.

Applications for Cardboard Laser Marking

Cardboard laser coding is used across packaging, logistics and manufacturing applications, including:

  • Secondary packaging for food, beverage and personal care products.
  • Corrugated boxes for logistics, fulfilment and e-commerce.
  • Pharmaceutical and healthcare packaging.
  • Retail-ready packaging and point-of-sale displays.
  • Industrial packaging that requires references, batch data or traceability codes.

CO₂ Laser Solutions for Cardboard Packaging

The SPA2 C range is designed for packaging applications such as boxes, bottles and blister packs. Its CO₂ laser technology can be configured for standard, dusty or washdown production environments.

Solutions for the cardboard sector

Frequently Asked Questions

What types of cardboard can be laser marked?
CO₂ laser systems can mark many cardboard, corrugated board and paperboard surfaces. The result depends on the fibre composition, colour, coating, print, varnish and surface texture.
Is CO₂ laser suitable for cardboard packaging?
CO₂ laser technology is commonly used for cardboard and paperboard packaging. It is particularly suitable for applying variable data such as batch codes, dates, references and 2D codes directly on compatible surfaces.
Can laser mark printed or coated cardboard?
In many cases, yes. However, printed inks, varnishes and coatings can change the contrast and surface effect. A test on the final packaging version is recommended.
Can DataMatrix and QR codes be marked on cardboard?
Yes. Laser systems can mark DataMatrix, QR and other 2D codes on cardboard packaging. The code must be sized, positioned and verified to ensure it can be read reliably in the real supply chain.
Does laser coding replace labels on cardboard boxes?
Not always. Laser coding can reduce labels used only for variable information, such as a batch or logistics code. Labels may still be necessary for shipping, customer-specific information or other packaging requirements.
Does laser marking damage cardboard?
The laser parameters are selected to create a legible code rather than cut the packaging. The final effect depends on the cardboard grade and finish, so it should be assessed on the actual substrate.
Is laser coding better than inkjet for cardboard boxes?
It depends on the application. Laser is often chosen for direct variable coding without inks or ribbons, while inkjet may be appropriate for large print areas, colour requirements or substrates that are not suitable for laser marking.

Test Your Cardboard Packaging

Send us a representative packaging sample, including printed or coated versions where relevant, together with the code content, target position and line requirements. We will help you assess the appropriate laser process and validate code quality.