The typical properties of our puroflex® systems are determined by the soft porous foam core and a compact, dense boundary zone. This integral density transition i gave its name for the so-called integral skin foams.
The integral structure of puroflex® soft foams can on the one hand be realized by the usage of physical blowing agents: They condense at the mould surface and initiate the skin formation. Water-blown systems on the other hand react differently and get their good surface qualities according to the choice of the raw materials.
The PU foam matrix can be adapted to the requirements of the final product: from pleasantly soft to catchy semi-rigid. Soft or semi-rigid PU integral skin foams cover a broad range of applications - thanks to the combination of qualities: compact surface with pleasant haptics and optics and the classical good comfort properties of soft to semi-rigid PU foams.