Material
PS is a light, low-cost plastic. We mold it into rigid, high-volume parts at a low price.
Overview
PS is a light, low-cost plastic. We mold it into rigid, high-volume parts at a low price.
PS (Polystyrene) is a light, rigid plastic. It flows easily into a mold, so it is perfect for cheap, high-volume parts.
We melt plastic resin and inject it into a steel mold to form identical parts.
High-volume parts with consistent size and finish, made to your drawing.
Specifications
Typical reference values for PS (Polystyrene) through injection molding. Final numbers can vary with grade and part shape.
| Property | Typical Value |
|---|---|
| Material type | PS (Polystyrene) |
| Manufacturing process | Injection Molding |
| Density | 1.05 g/cm³ |
| Tensile strength | 35–55 MPa |
| Service temperature | −20 to 80 °C |
| Standard finishes | As molded, painting, texturing |
Values are typical reference data and may vary with grade, heat treatment, and part geometry. Tell us your needs and we will confirm exact specs.
Why PS
Very cheap per part at high volume.
Flows well and fills thin walls.
Light parts cut shipping cost.
Takes paint and gloss nicely.
Material Options
We stock common grades. Tell us your need and we will pick the right one.
Clear and rigid. Good for displays.
Tougher for daily-use parts.
Any custom color you need.
How It Works
From your file to a finished part in five clear steps. Start with a free quote.
Upload your 3D file and drawings. Get a quote with free DFM feedback, usually within 24 hours.
Our engineers check wall thickness, draft, and gates. We suggest changes that cut cost.
We design and build the steel mold that shapes your part.
We melt the resin and inject it into the mold, then cool and eject the part.
We check dimensions and quality, then pack and ship worldwide.
Applications
Clamshells, cups, and trays.
Casings, toys, and utensils.
Cutlery, plates, and lids.
Light, non-loaded housings.
Design Tips
New to this process? These simple rules help your part turn out well and cost less.
Use a steady wall thickness so the part fills evenly and warps less.
A small draft (1–2°) on vertical faces helps the part release from the mold.
Plastics shrink as they cool. We size the mold to land on your final dimensions.
Finishes
The natural molded surface straight from the tool. Lowest cost.
A custom color coat for branding or looks.
A matte or patterned surface for grip or style.
A glossy protective layer for a premium look.
Why YiguProto
We are a dedicated factory for injection molding. Every file is reviewed by engineers before production. Every part is inspected before shipping. Your designs stay private with us.
FAQ