LDPE foams are semi-rigid. To impart more softness and resilience to LDPE foams, polar copolymers are often added to be used in eg. automotive, building and aerospace applications. Here, often excellent low temperature
properties are very important. Polymers change their properties from rigid to more rubbery at the glass transition temperature (Tg). A low glass transition temperature is therefore important to retain soft and flexible properties.

Ethylene butyl acrylat (EBA) is the copolymer of choice for low temperature applications since EBA's glass transition temperature is roughly -20°C lower compared to neat EVA whith a Tg of approx. -40°C.

Therefore, EBA blended with LDPE is an excellent starting material to produce soft and resilient foams even at very low temperatures. Applications for EBA / LDPE foams include – among many others – pipe insulation, expansion joints, gaskets and camping mats. All our Lucofin® grades are based on EBA making them perfectly suited to be used in all polyolefin foams, especially in those foams where superior low temperatures properties are required.