Pearlstick™ TPUs are a wide range of linear thermoplastic polyurethane elastomers (TPUs), which have been specially developed for use as raw materials in the manufacture of solvent-based adhesives for the automotive, furniture, footwear, and other industries.
Pearlstick TPUs are mainly crystalline polymers. Their structure is characterized by a small proportion of hard segments, in comparison with their content in soft segments. It is their polyol component (the part traditionally known as the soft segment or amorphous part) that crystallizes and imparts them such crystalline characteristics. The resulting polymers show outstandingly high tenacity and stress-strain power.
These TPUs have another interesting feature: a low melting point in their crystalline zones (50-60ºC), which permits the polymer to be softened or melted at relatively low temperatures for the adhesion process, with sufficient thermoplasticity and surface tack to ensure correct union between substrates of different materials.