General Purpose Polystyrene


General purpose Polystyrene (GPPS) is produced by the polymerization of styrene monomer. It is a transparent solid product manufactured in the form of 2-5 mm pellets.

It is generally used in the manufacturing of housewares, food containers, toys, office stationery, electrical appliances, hangers, IT equipment, Disposable, Eggs boxes, Vending cups, cutlery items, cosmetic boxes, lamp shield, XPS boards, PS foam products, clear boxes and other types of enclosures. Some major applications are:

GPPS - Specification
Typical Properties ASTM Test GP-525 GP-525(N) GP-500N GP-560 GP-565 GP-525X GP-550P GP-550P (N) GP-550P (LM) GP-550(S) GP-570
Tensile Strength (Kgf/cm2) D-638 400 400 400 350 340 430 430 430 430 430 330
Tensile Modulus (Kgf/cm2) D-638 30000 30000 30000 30000 32000 30000 28000 28000 28000 28000 25000
Tensile Elongation (%) D-638 1.2 1.2 1.2 0.9 0.75 1.2 1.5 1.5 1.5 1.5 1.0
Flexural Strength (Kgf/cm2) D-790 750 750 750 600 560 900 920 920 920 920 500
Flexural Modulus (Kgf/cm2) D-790 34000 34000 34000 34000 30000 34000 32000 32000 32000 32000 24000
Izod Impact Strength (Kg-cm/cm) D-256 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5
Vicat Softening Temperature (℃) D-1525 95 95 95 90 90 100 100 100 100 100 90
Heat Distoration Temperature (℃) D-648 85 85 85 80 80 85 90 90 90 90 80
Specific Gravity D-792 1.05 1.05 1.05 1.05 1.05 1.05 1.05 1.05 1.05 1.05 1.05
Melt Flow Index (gm/10min) D-1238 7 7 9 12 16.5 8 3 3 2 2.8 22.0
Product Description Injection Grade Injection Grade Injection Grade Injection Grade Injection Grade Extrusion Grade Extrusion Grade Extrusion Grade Extrusion Grade Extrusion Grade Injection Grade
Grades Characteristics Applications
GP-525 Blue Tinted, Excellent Clarity, Good Flow, Low Volatility. House Ware,House Hold items like Containers etc, Disposable Cutlery like spoons etc, Home appliances like Plastic Refrigerator Parts like vegetable trays , Toys, Drinking Cups, Stationery Items, Disposable Razors, Plastic Hangers,Water Filter Shell,Tooth Bushes and Cosmetic Casings , Auto Parts like Indicators Coves,Head Lamp covers,LED light cover etc.
GP-525(N) Light Blue Tinted, Excellent Clarity, Good Flow, Low Volatility. House Ware, Containers, Disposable Cutlery, Plastic Refrigerator Parts, Toys, Drinking Cups, Stationery Items, CD Casing, Disposable Razors, Plastic Hangers.Water Filter Shell,Tooth Bushes and Cosmetic Casings Auto Parts like Indicators Coves,Head Lamp covers,LED light cover etc.
GP-500 N Natural Tinted, Excellent Clarity, Good Flow, Low Volatility. House Ware, Containers, Disposable Cutlery, Plastic Refrigerator Parts, Toys, Drinking Cups, Stationery Item, Jwellery Boxes, Disposable Razors, Plastic Hangers.Water Filter Shell,Tooth Bushes and Cosmetic Casings Auto Parts like Indicators Coves,Head Lamp covers,LED light cover etc.
GP-560 Blue Tinted, Excellent Clarity, Good Flow, Low Volatility. House Ware, Containers, Toys, Stationery Items, Water Filter Bottle, Drinking Cups and Thin Wall Applications etc.
GP-565 Blue Tinted, Excellent Clarity, High Flow, Low Volatility. House Ware, Containers, Toys, Stationery Items, Drinking Cups and Thin Wall Applications etc.
GP-525 X No Internal Lubricant, Blue Tined, Excellent Clarity,Good Flow, Low Volatility. XPS Insulation Boards and PSP Foam Products etc.
GP-550 P Blue Tinted, Excellent Clarity, Good Flow, Low Volatility. PSP Foam Products and XPS Insulation Boards etc.
GP-550P (N) Natural Tinted, Excellent Clarity, High Flow, Low Volatility. Extruded sheet ,crystal clear sheets use for photo frames ,Door Panel and Window Panel etc.
GP-550P (LM) Blue Tinted, Excellent Clarity , Low volatility. Mainly use for XPS Sheets.
GP-550 S Blue Tinted, Excellent Clarity, Good Flow, Low Volatility. PSP Foam Products and XPS Insulation Boards etc.
GP-570 Blue Tined, Excellent Clarity, Excellent Flow, Low Volatility Spoon, Fork, Knife, ball point/ pens barrels, drinking cups, multiple cavities molds and thin wall applications
For complete data sheet of every product check below links:

GP-525 GP-525(N) GP-500 N GP-560 GP-565 GP-525 X GP-550 P GP-550P (N) GP-550P (LM) GP-550 S GP-570