Sustainable packaging solutions securely sealed with DEGACRYL® HS

DEGACRYL® HS develops new sustainable heat sealing solutions for the food packaging industry


Wide property range: high sealing strength plus high blocking temperature
Secure seal properties on common lid materials like aluminum foil or film structures
Outstanding smooth peel effect for easy opening
Economic and environmentally friendly packaging solutions

For decades, industry leaders in the food packaging industry rely on DEGACRYL® HS heat seal binders. Especially in the dairy sector smooth peeling properties are required when opening the products. Evonik’s heat sealing grades like DEGACRYL® HS 666 or DEGACRYL® HS 4313 E, a new solution for PVC-free paper/PET lids, are well established and ensure secured sealed packaging throughout the supply chain – from the dairy manufacturers to the consumer’s refrigerator.

Sustainable solutions are required in every industry and the food industry is no exception. To ensure food packaging can be properly recycled, it needs to consist of a single material. For food packaging that means the lid and tray should be made of the same material. Here, the solvent-based heat seal coating based on DEGACRYL® HS from Evonik offers clear advantages compared to other technologies.


Mono Material Packaging

A circular economy for plastic packaging is only possible by high recycling rates which can be achieved by mono material packaging. DEGACRYL® HS products can be used with a broad range of suitable material combinations, thus facilitates sealing of packaging made from mono material. Additionally, a low coating weight (2 to 6 g/m2) ensures a secured sealing, thus supports the declaration as mono material. Using our universal grades such as DEGACRYL® HS 4313 E or HS 4294 E, it is possible to seal a PET lidding film with a PET container without the need of additional additives. The ease of processing and application furthermore support the recycling of the final packaging.

Figure 1: Schematic comparison of existing multi-layer packaging versus mono material packaging solution using DEGACRYL® HS 4322 E (own data).

Take the current structure for meat packaging. Typically, they consist of a PET tray with a PE inliner, which is then sealed with a PET multi-laminate film made of PET, EVOH, and sealable PE (Figure 1: left side). These packaging types are not recyclable according to the current standard due to their multi-material composition. In contrast, packaging using a PET tray with a PET lid with a thin layer of DEGACRYL® HS based heat seal coating (Figure 1: right side) can be recycled as it is a mono material packaging. But ease of recycling is not the only thing consumers require. For meat and fresh food, consumers want to see the food they are buying, so highly transparent packaging is required for visibility. DEGACRYL® HS 4322 E has haze-free properties and is ideally suited to meet this need (see Figure 2).

Figure 2: Example of mono PET packaging for fresh food with high transparency based on DEGACRYL® HS 4322 E

Latest Product Development

DEGACRYL® HS 4296 E is a new innovative product, which has been recently launched and addresses the need for universal sealability – including non-polar substrates such as PP or PE.
DEGACRYL® HS 4296 E is characterized by a high blocking temperature of approximately 65 °C, which makes it the product of choice in regions with high humidity and increased temperature. High heat seal strength values are an additional advantage to this heat seal binder that can be used in versatile PVC-free applications.



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