MACSA id UK has highlighted the suitability of its modular SPA2 CO2 laser coding systems for marking printed cardboard pots, which the firm said are increasingly popular for packaging dairy products such as spreadable cheeses.
Cardboard is widely used by dairy processors and manufacturers due to its thermal insulation, light protection, and recyclability. Board is also versatile, making it suitable for bespoke designs in a range of shapes and styles.
In line with food safety requirements, Macsa explained laser marking ‘surpasses’ traditional ink methods by providing ‘accurate and durable’ markings whilst ensuring traceability.
The firm recently supplied a SPA2 30 CO2 laser coding system to mark printed cardboard pots for cheese. The machine uses a light beam to strike the pack in a controlled manner, removing the surface layer of paint. The mark, which features a lot number and expiration date, is described as ‘highly legible and accurate with exceptional sharpness’.
The intensity and clarity of the marking depends on the colour of the cardboard pots – for example, dark backgrounds such as blue, black, green and brown offer higher contrast than light colours like yellow and orange. However, dark colour reserves can also be applied to highlight markings in these lighter coloured backgrounds.
Macsa’s SPA2 range of 10W, 30W and 40W CO2 laser coders are typically used to code paper and board, glass and ceramics, coated materials, PET and PVC.
