• Polystyrene (General Purpose) GPPS

    APPLICATIONS
    Toys and novelties, rigid packaging, refrigerator trays and boxes, cosmetic packs and costume jewellery, lighting diffusers, audio cassette and CD cases.

    PROPERTIES
    Brittle, rigid, transparent, low shrinkage, low cost, excellent X-ray resistance, free from odour and taste, easy to process

    PHYSICAL PROPERTIES
    Tensile Strength 2.30 - 3.60 N/mm²
    Notched Impact Strength 2.0 - 2.5 Kj/m²
    Thermal Coefficient of expansion 80 x 10-6
    Max Cont Use Temp 70 - 85 oC
    Density 1.05 g/cm3

    RESISTANCE TO CHEMICALS
    Dilute Acid *** variable
    Dilute Alkalis ****
    Oils and Greases *** variable
    Aliphatic Hydrocarbons ****
    Aromatic Hydrocarbons *
    Halogenated Hydrocarbons *
    Alcohols ** variable

    KEY * poor ** moderate *** good **** very good

    CURRENT CASE STUDIES
    Polystyrene jugs Highly transparent cases made from crystal polystyrene. High transparency, low cost and easy mouldability have established its supremacy in presentation packing.