Custom PS Molding Product
If polystyrene is right for your application, just send us your drawings or samples. We’ll provide a tailored quote and deliver injection molded PS parts to your exact specifications.
Custom Polystyrene Injection Molding Solution
Zhongren specializes in injection moulding polystyrene for applications needing precise dimensions, stiffness, and cost efficiency. With solid experience, we deliver PS parts with smooth surfaces, fast production, and reliable performance. Polystyrene injection molding provides cost-effective, precise, and lightweight parts ideal for applications requiring excellent dimensional stability.
How Are Polystyrene Parts Manufactured?
We offer full-service injection polystyrene manufacturing using advanced equipment and in-house tooling capabilities to meet your performance and design goals.
- PS Injection Molding
- PS Extrusion Molding
- Insert Molding with Polystyrene
- Polystyrene CNC Machining
Proper mold temperature, gate design, and shrinkage control are essential to reduce brittleness and warping in molded PS parts.
Common Applications of PS Molding
Due to its rigidity, affordability, and easy moldability, PS injection molding is widely used in:
- Consumer electronics casings
- Disposable cutlery and packaging
- Medical trays and labware
- Appliance interiors and housings
- Point-of-sale displays
- Cosmetic containers and caps
Our Valued-Added Services
- Design and Engineering Support
- Material Testing and Certification
- Surface Finishing and Printing
- Assembly and Sub-Assembly
- Custom Packaging and Labeling
Advantages of Polystyrene Injection Molding
- Low-cost and lightweight thermoplastic
- Excellent dimensional stability and moldability
- Smooth surface finish and tight tolerance capability
- FDA-compliant and food-safe grades available
- Suitable for thin-wall and high-volume parts
Disadvantages of Polystyrene Molding
- Brittle—low impact strength unless using HIPS
- Poor chemical and UV resistance
- Limited temperature tolerance (<80°C)
- May warp or crack under mechanical stress
FAQ of PS Injection Molding
Is polystyrene suitable for high-volume injection molding?
Yes. Polystyrene is ideal for high-volume injection moulding due to its fast cycle time, low shrinkage, and consistent performance in automated production.
What are the limitations of molding polystyrene?
Standard PS is brittle and not UV-stable. It’s not suitable for high-impact or outdoor applications unless modified (e.g., with rubber to create HIPS).
Can polystyrene be used for insert molding?
Yes, but insert molding with PS requires careful temperature control to avoid internal stress and ensure good bonding with inserts.
Do you offer food-safe or medical-grade PS materials?
We provide FDA-grade and medical-grade PS injection molding solutions for disposable trays, diagnostic components, and labware.
What’s the difference between GPPS and HIPS?
GPPS (General Purpose Polystyrene) is clear and rigid; HIPS (High Impact Polystyrene) adds rubber modifiers for toughness. HIPS is preferred for impact-prone parts.
What's the typical lead time for custom PS molding?
Tooling takes 2–4 weeks. Production timelines vary by complexity and order volume, but we ensure rapid turnaround after mold validation.
