Low impact polystyrene
GPPS is a polymer obtained in the process of styrene polymerization. Polystyrene is characterized by good transparency and thermal resistance. GPPS products are characterized by high rigidity. Pure polystyrene is colorless (transparent), hard, brittle, with very limited flexibility. Low impact polystyrene is used for e.g. film extrusion or injection molding (e.g. cosmetic packaging).
High impact polystyrene
HIPS due to the content of polybutadiene has elastic properties (it is more resistant to cracking than GPPS). In addition, the addition of polybutadiene reduces stiffness and tensile strength, causes loss of transparency, as well as a significant reduction in gloss. High-impact polystyrene is used for: film extrusion, which is often then thermoformed in the next step (packaging, interiors of refrigerators), for injection of common goods, etc.
EPS is in the form of pearls, contains pentane thanks to which it undergoes foaming (enlarges its volume) in the presence of water vapor to form expanded polystyrene balls. It is offered in white and gray, in various granulations, in a flammable and self-extinguishing version. Due to its properties, EPS is widely used for the production of insulation boards, fittings and packaging.
EPS BEWISYNBRA RAW
EPS TOTAL (GRAY EPS)
SBC is a hard, thermoplastic material, the product of copolymerization of styrene and butadiene. Products obtained from SBC are transparent and at the same time impact-resistant. SBC can be used alone, e.g. for the injection of products such as transparent hangers, toys or in combination with GPPS for extruding and thermoforming packaging, containers, trays, etc.