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GPPS HAIWAN 535
GPPS HAIWAN 535 – General Purpose Polystyrene resin designed for injection moulding and extrusion applications, offering high transparency, good rigidity, and easy processing for a wide range of consumer and industrial products.
Sold by container only: 25.00 mt/container. Quantity = number of containers.
Key Benefits
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High transparency & gloss – delivers a premium, clear finish.
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Good rigidity – retains shape and dimension under load.
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Excellent flow properties – ensures smooth, efficient processing.
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Low shrinkage – provides high dimensional accuracy.
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Smooth surface finish – suitable for decoration and printing.
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Consistent quality – stable mechanical and optical properties for mass production.
3. Technical Specifications (Typical Values)
| Property | Unit | Typical Value | Test Method |
|---|---|---|---|
| Physical Properties | |||
| Density | g/cm³ | 1.04 | ASTM D792 |
| Water Absorption (24h) | % | ≤ 0.03 | ASTM D570 |
| Thermal Properties | |||
| Heat Distortion Temperature (1.8 MPa) | °C | 90 | ASTM D648 |
| Vicat Softening Point | °C | 100 | ASTM D1525 |
| Thermal Conductivity | W/m·K | 0.17 | ASTM C177 |
| Mechanical Properties | |||
| Tensile Strength at Yield | MPa | 50 | ASTM D638 |
| Elongation at Break | % | 3 | ASTM D638 |
| Flexural Strength | MPa | 90 | ASTM D790 |
| Flexural Modulus | MPa | 3,000 | ASTM D790 |
| Izod Impact Strength (23 °C, notched) | kJ/m² | 2.5 | ASTM D256 |
| Rockwell Hardness (R scale) | – | 105 | ASTM D785 |
| Rheological Properties | |||
| Melt Flow Index (200 °C / 5 kg) | g/10 min | 8 | ASTM D1238 |
| Spiral Flow Length | cm | 40 | – |
| Optical Properties | |||
| Light Transmittance | % | ≥ 88 | ASTM D1003 |
| Haze | % | ≤ 2 | ASTM D1003 |
Note: The above values are typical properties, not specification limits. Processing conditions and final part geometry may affect performance.
4. Typical Applications
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Transparent household containers and storage boxes
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Food packaging, clamshells, blister packs
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Stationery items: rulers, pen barrels, clear accessories
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Toys and decorative parts
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Electronic housings and covers requiring rigidity and clarity
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