Commercial applications are found in many industries. They are basically used for decorating, protecting, and providing different functional treatments that enhance the substrates. LDPE is the most commonly used plastic in extrusion coating. However, the use of polar copolymers is increasing. Among the polar copolymers ethylen butyl acrylat (EBA) and ethylen vinyl acetate (EVA) are widely used. Compared to LDPE or EVA, EBA enjoys a lower heat sealing temperature, improved hot tack, stronger adhesion to a wider variety of substrates (including polyamides etc.) and better sealing properties. The figure shows the adhesion of LDPE, Lucofin® 1400MN (EBA) and EVA on various substrates.
LDPE shows good adhesion only towards craft paper, whereas other substrates, such as PA film, PET film, OPP film, PP fabric are only weakly bonded. In contrast, Lucofin® 1400MN shows good adhesion to all substrates outperforming even EVA.

Another key factor in extrusion coating is the maximum processing temperature of a polymer limiting the output. Thermal decomposition limits EVA processing to about 220 °C while Lucofin® 1400MN easily processes up to 300 °C and thus a significantly higher output is achievable. In addition, Lucofin® 1400MN exhibits better adhesion towards polar substrates such as PA, PET, EVOH, PC or aluminium is required.

Lucofin® 1400MN can also be blended with Lucofin® 1492M/Lucofin® 1492M HG, our Maleic anhydride (MAh) grafted version of Lucofin® 1400MN. Due to our innovative 'Reactive Extrusion Technology', the extremely polar MAh in Lucofin® 1492M/Lucofin® renders it more reactive than similar competition grades. Consequently, belnding of Lucofin® 1492M/Lucofin® 1492M HG in moderate concentrations (10 % - 50 %) with Lucofin® 1400MN allows drastic improvement of adhesion towards polar substrates.