In an iterative sampling process focused on the customer’s specifications and needs, comprehensive experimental and trial data was shared between the partners to optimize and validate the film solution. In this process, Palsgaard’s Polymer Application Centre in Denmark provided valuable support in assessing the right concentration level of Einar® 611 in this cold anti-fog application and helping the customers accelerate the time-to-market of the new PE food packaging film.
As a renewable polyglycerol ester made from vegetable oils that are not competing with food or feed sources, Einar® 611 has been developed as a highly effective replacement for conventional anti-fog chemistries, such as glycerol monooleate or sorbitan esters, in demanding PE film formulations designed for sensitive food packaging. With anti-fog performance matching or exceeding that of non-vegetable fossil-based incumbents, it delivers excellent results in LDPE and LLDPE as well as coextruded and laminated PE film at low loading levels (typically 0.2% to 0.4%) for both cold-fog and hot-fog applications. Moreover, it has proven itself as an ideal additive in PE masterbatches and shows no adverse effects on the mechanical, optical or barrier properties of the film, while offering high heat resistance and low volatility. The bio-based anti-fog surfactant is available in paste form.