The growing emphasis on sustainability and circular economy principles has led to increased efforts in recycling multi-material plastic films. A significant challenge in this domain is the recycling of composite films such as PE/EVOH/PE, where the inherent incompatibility between Polyethylene (PE) and Ethylene Vinyl Alcohol (EVOH) hinders the production of high-quality recycled materials. Addressing this, advanced compatibilizers play a pivotal role in bridging this gap. As a dedicated supplier of specialty chemical solutions, we highlight the innovative use of products like LOTADER® 4210, a cutting-edge PE compatibilizer designed to optimize the recycling of these complex film structures.

The Challenge of PE/EVOH Film Recycling

Multi-material films like PE/EVOH/PE are widely used in packaging due to the excellent barrier properties provided by EVOH against gases and the processability and mechanical strength offered by PE. However, when it comes to recycling, the significant difference in polarity and morphology between PE and EVOH creates interfacial issues. Without proper intervention, these blends result in heterogeneous materials with poor mechanical properties, limited processability, and unacceptable surface aesthetics, rendering them unsuitable for high-value applications.

To achieve efficient recycling and produce high-quality compounds from film scraps, a compatibilizer is essential. This additive must effectively compatibilize the diverse polymer phases, increasing interfacial adhesion and improving the homogeneity of the blend during processing. The goal is to create a stable, uniform material that can be reprocessed into new film structures with retained or enhanced properties.

LOTADER® 4210: A Superior Compatibilizer for Barrier Film Recycling

LOTADER® 4210 is a prime example of an advanced ethylene-based functional polymer specifically engineered for this purpose. Its formulation contains a high concentration of Maleic Anhydride (MAH) groups, providing it with the polarity needed to interact effectively with EVOH. This polarity ensures outstanding compatibility with various EVOH content levels, up to 10% by weight, in PE-based films. By improving the interfacial adhesion between PE and EVOH, LOTADER® 4210 leads to more stable film processing conditions and higher product quality compared to traditional maleic anhydride-grafted PE (PEgMAH).

Using LOTADER® 4210 allows for the recycling of barrier film scraps with minimal gel formation, while also preserving good optical properties and optimizing mechanical performance. Typical recommendations for compatibilizer loading in PE/EVOH film scrap recycling range from 2% to 10%, with an approximate EVOH/Compatibilizer ratio of 1:0.5 being effective. This strategic addition ensures that the recycled material meets stringent quality standards.

Furthermore, LOTADER® 4210 can be incorporated directly into one of the film layers during production to create 'ready to recycle' films, aligning with new EU project standards like PR NF 18120-7. This proactive approach ensures that your products are designed for circularity from the outset.

Partner with a Trusted Chemical Supplier

For manufacturers committed to sustainability and improving the recyclability of their products, sourcing high-performance compatibilizers is key. We are proud to be a leading supplier of innovative chemical solutions that support the circular economy. By choosing products like LOTADER® 4210, you can enhance the value of your recycled materials and contribute to a more sustainable future. We offer expert advice, technical support, and competitive pricing. Contact us today to buy these advanced compatibilizers and elevate your recycling initiatives.

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