Crystal Clear GPPS Granules for Transparent Injection Molding and Extrusion Products

• Customization: Available
• Feature: Non-Degradable
• CAS No.: 9003-53-6
• Formula: [CH2CH(C6h5)]N
• EINECS: 202-851-5
• Material: General Purpose Polystyrene/GPPS
• Usage: General Plastics
• Plastic Properties After Heated: Thermoplastic Plastics
• Plastic Forming Method: Film Pressure
• Color: White
• Transport Package: 25 Kgs/Bag(S)
• Specification: 99%
• Trademark: Ethai™
• Origin: China
• HS Code: 3903199000
• Production Capacity: 300, 000 Mt/Year

Product Description

Product Description

GPPS (General Purpose Polystyrene)

    General Purpose Polystyrene (GPPS), often referred to as crystal polystyrene, is one of the most widely used & fundamental thermoplastic polymers. Its popularity stems from a unique combination of key properties that make it suitable for a vast range of applications, despite some well-defined limitations.

Specification

Item	Test conditions	Test method	Test data	unit
Density		ISO 1183:1987	1,040	kg/m^3
Water absorption		ISO 62:1999	<0.1	%
Melt flow rate	200°C/5 kg	ISO 1133:1997	3.8	cm^3/10 min
Process shrinkage		ISO 294-4:1997	0.4~0.6	%
Charpy impact strength	1eU	ISO 179:1993	15	KJ/m^2
Tensile modulus	1 mm/min	ISO 527-2:1993	3,300	MPa
Elongation	50 mm/min	ISO 527-2:1993	3	%
Tensile strength at break	50 mm/min	ISO 527-2:1993	55	MPa
Ball indentation hardness H	358 N/30 s	ISO 2039-1:1993	150	N/mm2
Bending strength	2 mm/min	ISO 178:1993	100	MPa
HDT	1.8MPa	ISO 75-2:1993	84	°C
Linear coefficient of thermal expansion	(23~80)°C	DIN 53 752	0.8~1.0	K-1
Heat conduction		DIN 52 612	0.16	W/mK
Vicat softening point	B50/oil	ISO 306:1994	93	°C
Flame retardance	>1.4mm	UL-Standard 94	94HB	Class

Application

Packaging Field

Consumer Goods & Electronics

Electrical Industry

    GPPS is widely used in rigid packaging due to its clarity and stiffness. Common applications include disposable cups, food containers, lids, and transparent clamshells . It is also extruded into oriented polystyrene (OPS) sheets for use in the food & consumer goods packaging industry .

    Its excellent transparency and gloss make it suitable for a variety of consumer items such as toys, housewares, stationery, cosmetic containers & hangers. In electronics, GPPS is used for transparent covers, light diffusers, and casings for audio/video accessories like CD cases .

    Thanks to its superb dielectric properties and minimal water absorption, GPPS is an ideal material for highfrequency electrical insulation components, capacitor films & parts in televisions and other electronic devices .