Denka GPPS MW-1-321 is a general-purpose polystyrene (GPPS) resin characterized by high transparency, excellent flowability, and balanced mechanical properties. It is specifically designed for injection molding applications, including food packaging, household containers, and stationery. Available in standard packaging with Technical Data Sheets (TDS).
| Manufacturer | Denka |
|---|---|
| Density | 1.04 g/cm³ |
| MFR | 1.8 g/10min |
| Flexural Modulus | 3300 MPa |
| Tensile Strength at Break | 47.0 MPa |
| Tensile Strength at Yield | < 3.0 % |
Note: See the product description for additional technical specifications
In the field of transparent plastic applications, Denka GPPS MW-1-321 (General Purpose Polystyrene) is a high-quality resin material that combines excellent transparency with outstanding processing performance. As a premium GPPS (General Purpose Polystyrene) product, it is widely used in packaging, electronics, and consumer goods industries.
Key Selling Points
The following are typical properties of Denka GPPS MW-1-321 (for reference only; actual values are subject to COA):
| Property | Value | Test Method | Test Condition |
| Density | 1.04 g/cm³ | ISO 1183 | 23°C |
| Melt Flow Rate (MFR) | 1.8 g/10min | ISO 1133 | 200°C / 5kg |
| Flexural Modulus | 3300 MPa | ISO 178 | – |
| Tensile Strength at Break | 47.0 MPa | ISO 527-2/5 | – |
| Tensile Strength at Yield | < 3.0 % | ISO 527-2/5 | – |
| Heat Deflection Temperature (HDT) | 74.0 °C | ISO 75-2/A | 1.8 MPa |
Denka GPPS MW-1-321 is widely used in the following industries due to its high transparency and excellent processing performance:
| Comparison Dimension | GPPS | HIPS |
| Transparency | Excellent | Poor |
| Impact Strength | Low | High |
| Cost | Lower | Slightly Higher |
| Applications | Transparent Products | Impact Resistant Products |
Conclusion:
If high transparency is required (such as packaging and display parts), GPPS MW-1-321 is recommended; if impact resistance is more important (such as housings), HIPS is a better choice.
| Comparison Dimension | GPPS | ABS |
| Cost | Lower | Higher |
| Strength | Medium | High |
| Processability | Excellent | Good |
| Appearance | Transparent | Opaque |
Conclusion:
Choose GPPS for cost-sensitive applications requiring transparency; choose ABS when higher mechanical strength is needed.
To achieve optimal performance of Denka GPPS MW-1-321, the following processing parameters are recommended:
1. Is Denka GPPS MW-1-321 suitable for food contact applications?
Generally, GPPS can be used for food packaging, but compliance with specific regulations (such as FDA) should be confirmed. It is recommended to request certification documents from the supplier.
2. Why is the transparency of my product insufficient?
Possible reasons include:
3. Can GPPS MW-1-321 be used outdoors?
It is not recommended for long-term outdoor use, as GPPS has poor weather resistance and may yellow over time.
4. Can it be used for secondary processing (such as printing or plating)?
Yes, GPPS has good surface properties and is suitable for printing and coating.
5. Why is GPPS more brittle than HIPS?
GPPS is pure polystyrene, while HIPS is rubber-modified, giving it better impact resistance.
