Label free Post-mould Graphics for Rotational Moulded plastic products
Rotational moulding is a process that has enabled the plastics industry to manufacture a wide range of products that were not previously made or they were done with laborious methods and at low speeds.
Most prominent materials are polyolefins, such as polyethylene (PE) or polypropylene (PP). The modification of a polyolefin surface is a challenge, because of its low surface energies. It has been a long-time demand in the market to be able to permanently mark, brand or coat a moulding while adding value and functionality to the final product.
At Lysis Technologies and Tesoplas we have developed revolutionary technologies that enable the direct graphics application onto polyolefins.
These can be applied via various methods such as coating, stencilling, screen printing, stamping or just brush painting.
In this case decorative or even functional coatings can be introduced to the mouldings. Examples are light-blocking, antimicrobial, antistatic, etc.
The ink can be colour-matched and is characterized by its high UV resistance as well as by its long shelf-life as it is a solvent free system.
This ink system is applied onto the final product after the moulding process has taken place. In this way, a greater flexibility regarding operational set-up is realized as the moulder or its customer can prepare the final appearance of the moulding as and when it is needed.
Some of the ways to achieve that are shown in the following pictures:
Graphics made with screen printing
Graphics created with gloss roller and single use stencil
Coatings applied with gloss roller
Graphics made with gloss roller and multi-use stencil