Siegwerk has introduced CIRKIT NOVASEAL, a new portfolio of heat-seal lacquers developed to support recyclable fibre-based and flexible packaging structures.
The innovation addresses a key packaging challenge: delivering reliable sealing performance while enabling packaging formats designed for improved recyclability. The portfolio combines heat-sealing functionality with packaging performance requirements across a range of applications.
CIRKIT NOVASEAL comprises five heat-seal lacquer variants engineered for different packaging needs. The products are compatible with both gravure and flexographic printing processes and offer varying seal initiation temperatures, hot-tack performance and bond strengths.
A notable feature of the portfolio is its ability to enable heat sealing on paper and paperboard substrates. This can help packaging developers create fibre-based packaging solutions without the need for additional plastic sealing layers, supporting efforts to improve recyclability and material recovery.
The technology is also intended for selected flexible packaging applications where low coating weights and dependable sealing performance are required. According to Siegwerk, the portfolio has been designed to support high-speed packaging operations through enhanced hot-tack properties while maintaining seal integrity.
The launch follows the integration of heat-sealing technologies acquired through Siegwerk’s acquisition of Allinova. By bringing these technologies together under a dedicated portfolio, the company has created a structured range focused on sealing solutions for sustainable packaging applications.
“CIRKIT NOVASEAL is a key milestone in strengthening our coatings offering for sustainable packaging,” said Gilles Le Moigne, Head of Circular Economy Coatings at Siegwerk.
The development reflects broader industry efforts to replace complex packaging structures with designs that are easier to recycle while maintaining packaging functionality. Heat-seal lacquers are increasingly being evaluated by converters and brand owners as an alternative approach to creating recyclable fibre-based and mono-material packaging formats that align with evolving circular economy and sustainability objectives.