How a Paging Conveyor Improves Carton and Pouch Inkjet Coding

How a Paging Conveyor Improves Carton and Pouch Inkjet Coding is a practical application for manufacturers that need reliable identification without slowing production. The screenshots below show folded cartons, plastic bags and premade pouches moving through a paging conveyor coding station while a DAYSJET continuous inkjet system adds production information in real time.

A well-designed coding station is more than a printer. Product handling, sensor position, printhead distance, ink selection and operator checks all influence whether the final date, batch number or traceability code is readable.

Application challenge

The main challenge is preventing double feeds, skewed packs and changing product gaps before printing. If product movement is unstable, even a correctly configured printer can produce shifted, incomplete or repeated codes. The coding point should therefore be treated as part of the whole production line rather than as an isolated device.

Before installation, collect the required message content, available print area, normal and maximum line speed, substrate material, cleaning method and production environment. These details determine the correct printer, nozzle, ink and mounting arrangement.

Recommended coding station setup

Use adjustable side guides, a controllable friction feeder and a photoelectric sensor positioned upstream of the printhead.

• Keep the product path stable before and after the print point.
• Use a rigid, adjustable bracket so the printhead cannot move during operation.
• Place the sensor where it detects one product once and is not affected by reflections or dust.
• Select ink only after testing the real production material and drying conditions.
• Save the approved message and operating parameters to reduce setup errors during changeovers.

Quality control on the production line

Sample codes from the beginning, middle and end of a production run and confirm that the message remains complete when the conveyor accelerates.

Operators should compare samples against a simple acceptance standard: correct content, complete characters, consistent position, sufficient contrast and resistance to normal handling. Recording the reason for any rejected code also makes future adjustment faster.

Why continuous inkjet printing fits this application

CIJ printing is non-contact, works on moving products and can print variable information such as manufacturing date, expiry date, lot number, shift code and serial data. It can be integrated with sensors, encoders and production controls, making it suitable for both stand-alone conveyors and automated lines.

Reliable results depend on matching the model and ink to the real application. A site test with actual products is the best way to confirm contrast, adhesion, drying time and line-speed performance before final installation.

Frequently asked question

Why is product spacing important for inkjet coding?

Stable spacing gives the sensor and printer enough time to trigger each message once, reducing missed prints and duplicate codes.

Conclusion

This application shows how stable product handling and correct CIJ setup work together to create clear, repeatable codes. DAYSJET can help evaluate the sample, line speed, message size and factory environment before recommending a configuration.

Explore our industrial inkjet printers or contact DAYSJET service and support for application advice.