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General Purpose Polystyrene and High Impact Polystyrene
| Brand | Categories | Grade | Application | MFI (g/10 min, 200°C, 5kg) | Operations |
|---|---|---|---|---|---|
| LIWAN | GPPS | 525 | Home Appliances Consumer Product XPS |
7.5 | Inquiry |
| LIWAN | GPPS | 535N | Home Appliances Consumer Product XPS |
3.5 | Inquiry |
| LIWAN | HIPS | 825 | Wide range of injection molding applications | 4.6 | Inquiry |
| GON | GPPS | GON525 | Home Appliances Consumer Product XPS |
7 | Inquiry |
| GON | GPPS | GON535N | Home Appliances Consumer Product XPS |
2.7 | Inquiry |
| GON | HIPS | GON825 | Wide range of injection molding applications | 3.5 | Inquiry |
| STL | GPPS | STL525 | Home Appliances Consumer Product XPS |
9 | Inquiry |
| STL | GPPS | STL535 | Home Appliances Consumer Product XPS |
3 | Inquiry |
| STL | HIPS | STL88 | Wide range of injection molding applications | 4 | Inquiry |
| STL | HIPS | STL888GH | Wide range of injection molding applications | 3.5 | Inquiry |
GON525
1. Material Characteristics
GON525 is a highly transparent GPPS grade. It gives excellent mechanical and heat resistance properties while providing with easy process-ability and short cycle time.
2. Material Application
- Transparent parts for refrigerators such as fruit and vegetable crispers, chillers, flaps, trays etc.
- Stationery products like pen barrels, scales etc.
- Household applications such as crystal-ware, kitchen containers etc.
- Ideal material for physically or chemically foamed high-quality foamed articles, such as foam containers, labels or profiles (PSP/XPS)
- Packaging applications such as chocolate boxes, display cabinets, etc.
- Other transparent articles in injection Molding applications
GON535N
1. Material Characteristics
GON535N is a heat resistant, rapid freezing general purpose grade. It is suitable for expanded sheet and film; for blends with high impact polystyrene in heat contact applications; for transparent, impact resistant applications in blends.
2. Material Application
- LDP, Light diffuse plate and LGP, Light guide plate
- Ideal material for physically or chemically foamed high-quality foamed articles, such as foam containers, labels or profiles (PSP/XPS).
- Replacement of SAN and PMMA in several application like water filter containers, pen parts etc.
- Extruded molded articles and injection molded articles
- Transparent sheet for Showcases & displays, consumer electronics, household application, photo frames, building material etc.
- In blends with high impact polystyrene
GON825
1. Material Characteristics
GON825 is a medium flow and very high impact Polystyrene. It gives good mechanical and heat resistance properties while providing with easy processability and short cycle time.
2. Material Application
- Wide range of injection molding applications , e.g. - office, kitchen and bathroom articles
- Food packaging as beverage cups, packaging for dairy products, sheets and disposables
- Internal parts and housings of household appliances and consumer electronics
- Toys
Frequently Asked Questions (FAQ)
Q1
What is the primary difference between GPPS and HIPS?
GPPS (General Purpose Polystyrene) is known for its high clarity, stiffness, and transparency, making it suitable for clear containers, optical sheets, and crisper drawers. HIPS (High Impact Polystyrene) contains added rubber polymers to provide superior impact resistance and toughness for durable parts like appliance housings, food packaging, and toys.
Q2
What makes GON525 suitable for transparent refrigerator parts?
GON525 is a highly transparent GPPS grade that provides excellent mechanical strength, heat resistance, easy processability, and short cycle times, making it ideal for molding crispers, chiller trays, and flaps.
Q3
Can GON535N be used as a replacement for engineering plastics like SAN or PMMA?
Yes, GON535N offers rapid freezing, heat resistance, and excellent optical clarity, allowing it to substitute SAN and PMMA in applications such as light diffuse/guide plates (LDP/LGP), water filter containers, and pen components.
Q4
What are the main application areas for GON825 HIPS resin?
GON825 is engineered for injection molding applications requiring high impact resistance, including food packaging (beverage cups, dairy containers), household appliance housings, consumer electronics, and toys.
Q5
How does the Melt Flow Index (MFI) affect the processing of these polystyrene grades?
MFI measures the flow rate of the molten polymer. Grades with a higher MFI (such as GON525 at 7 g/10 min or STL525 at 9 g/10 min) are optimized for easy flow and rapid injection molding, whereas grades with a lower MFI (such as GON535N at 2.7 g/10 min) offer enhanced melt strength suited for extrusion, sheet production, and foaming (PSP/XPS).
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