Packaging ink and coating specialist Siegwerk has launched CIRKIT NOVASEAL, a new portfolio of heat seal lacquers for packaging designed to improve sealing performance while supporting circular packaging solutions.

The new product family becomes part of Siegwerk’s CIRKIT coatings platform and is aimed at brand owners, converters and packaging manufacturers seeking recyclable paper-based and flexible packaging alternatives.

Why Heat Seal Lacquers Matter

As the packaging industry moves away from traditional plastic laminates and multi-material structures, sealing performance has become one of the biggest technical challenges.

Packaging must still provide:

• secure closure
• product protection
• leak prevention
• high-speed processing
• shelf-life performance

Without reliable sealing, even the most sustainable package can fail during production, transport or consumer use.

CIRKIT NOVASEAL has been developed to address these challenges while supporting recyclable packaging structures.

Built on Circular Packaging Principles

The launch reflects Siegwerk’s broader circular economy strategy.

According to the company, CIRKIT NOVASEAL is specifically designed for:

• paper-based packaging
• fiber-based packaging
• selected flexible packaging applications
• recyclable packaging concepts

This allows packaging producers to maintain functional performance while improving recyclability and reducing dependence on conventional plastic-based sealing systems.

Product Features

The CIRKIT NOVASEAL portfolio includes several performance options designed for different packaging applications.

Low Seal Initiation Temperature

Some grades provide low seal initiation temperatures, allowing converters to:

• reduce energy consumption
• improve line efficiency
• increase production speeds

Excellent Hot-Tack Performance

Hot-tack strength is critical on high-speed packaging lines where seals must remain secure immediately after formation.

Benefits include:

• reduced seal failures
• fewer production stoppages
• improved packaging integrity

Strong Bond Strength

The coatings are engineered to provide strong bonding even at relatively low coating weights.

This helps:

• reduce coating consumption
• improve converting efficiency
• lower overall packaging costs

Designed for Flexographic and Gravure Printing

The portfolio supports major converting technologies including:

• flexographic printing
• gravure printing

This compatibility allows packaging manufacturers to integrate the coatings into existing production workflows without significant process changes.

Strategic Importance for Packaging Converters

For converters, one of the biggest challenges today is balancing:

• sustainability
• processability
• performance
• cost efficiency

Many recyclable packaging structures struggle with sealing performance compared with traditional multilayer plastic laminates.

Heat seal coatings such as CIRKIT NOVASEAL can help bridge that gap.

Impact of the Allinova Acquisition

Siegwerk stated that CIRKIT NOVASEAL incorporates expertise and technologies gained through its acquisition of Allinova.

The launch effectively consolidates Siegwerk’s heat-sealing technologies under a single product platform, simplifying product selection and technical support for customers.

Industry Trend: Functional Coatings Are Becoming Critical

The packaging industry is increasingly focused on replacing complex multi-material structures with recyclable alternatives.

This trend is being driven by:

• Packaging and Packaging Waste Regulation (PPWR)
• Extended Producer Responsibility (EPR)
• retailer sustainability requirements
• consumer demand for recyclable packaging

As a result, functional coatings are becoming a key technology area because they can provide:

• barrier properties
• sealing performance
• printability
• recyclability support

without adding additional material layers.

Market Opportunity

The global shift toward fiber-based packaging is creating significant demand for advanced coating technologies.

Applications likely to benefit include:

• food packaging
• snack packaging
• bakery packaging
• confectionery packaging
• takeaway packaging
• retail packaging

Many of these sectors require strong sealing performance while also pursuing recyclable or paper-based packaging goals.

Industry Insight

For packaging converters, the real value of CIRKIT NOVASEAL may not simply be sustainability.

The larger advantage is process reliability.

A recyclable package that cannot run efficiently on modern packaging lines has limited commercial value. By focusing on sealing performance, hot-tack strength and converting efficiency, Siegwerk is addressing one of the industry’s most important barriers to large-scale adoption of circular packaging solutions.

Final Thought

The launch of CIRKIT NOVASEAL highlights how the packaging industry’s sustainability transition increasingly depends on enabling technologies rather than material substitution alone.

As paper-based and recyclable packaging formats continue expanding, high-performance heat seal lacquers for packaging will play a critical role in ensuring that sustainable packaging remains commercially viable, operationally efficient and compatible with future circular economy requirements.

Last Updated on 29/05/2026 by Jota Machinery