Termocrom MW-23: Water-Based Flexographic Susceptor Varnish for Microwave Heat Generation
The Termocrom MW-23 water-based flexographic varnish is a specialized technical coating formulated with active additives that absorb microwave energy and efficiently convert it into heat. Designed for direct application via flexographic or gravure printing units, this varnish allows the creation of customized heatable zones (specific patterns, coverages, and coat weights) on paper, cardboard, or barrier film packaging. Its localized thermal action drastically improves packaging performance during microwave heating, promoting crisping and browning effects in food while optimizing cooking times. Its water-based formulation guarantees an exceptional environmental profile with low VOC emissions, ideal for the modern food industry.
Operational Machine and Final Product Advantages
- Targeted and efficient thermal heating: Generates localized heat exactly where the product needs it (bases, lids, or contact areas), eliminating the need to insert complex or additional susceptor patches into the packaging.
- Superior organoleptic improvement: Prevents re-wetting and facilitates the crispy and browned effect in doughs, snacks, and battered products, offering a higher quality consumer experience.
- Inline process optimization: Prints like a conventional varnish, allowing the thermal profile to be adjusted through screen patterns and coat weight application, additionally shortening consumer heating times.
- Excellent conversion suitability: After drying and heating, the varnish maintains its functional properties and is suitable for subsequent die-cutting, creasing, gluing, and heat-sealing processes.
- Sustainability and food safety: Water-based formula designed to comply with strict food contact regulations and migration requirements (subject to validation with the target food and oven).
Technical Specifications
| Parameter | Specification |
|---|---|
| Chemical Nature | Aqueous dispersion with active microwave-absorbing additives |
| Main Property | Susceptor effect / Localized thermal generation |
| Application Systems | Flexographic or gravure varnishing unit |
| Compatible Substrates | Any type of paper (coated and uncoated), cardboard, and barrier films |
| Thermal Profile Control | Adjustable via coverage, coat weight, and screen pattern |
| Recommended Applications | Ready meals, pizzas, snacks, baked goods, and heatable hybrid packaging |
Logistics and Handling
- Packaging formats: Supplied in 25 kg pails, 200 kg drums, and 1000 kg IBC totes to meet industrial requirements.
- Storage conditions: Store in cool, dry, and well-ventilated facilities, maintaining temperatures between 5°C and 30°C. Strictly protect from freezing and direct solar radiation.
- Shelf life: 6 months from the date of manufacture when stored in the original, hermetically sealed container.
- Safety and Regulations: Specific migration testing and thermal process validation with the target substrate and food are required. Consult the Safety Data Sheet (SDS) for plant protective equipment guidelines.