Plastic injection molding is one of the most widely used methods for producing plastic parts. It involves injecting molten resin into a mold, where it cools and solidifies, a process similar in principle to die casting. 

Unitedparts provides three types of injection molding services:

  •  Injection Molding

  •  Two-shot / Multi-shot Molding

  •  Insert Molding

  • Features:
    1. Delivers parts with complex geometries and reliable dimensional accuracy.
    2. High efficiency for mass production with low unit cost.
    3. Dimensional stability with consistent quality.
    4. Unitedparts provides secondary processes such as ultrasonic welding and assembly services.

  • Materials
    1. Commodity plastics: PE, PP, PS, PVC
    2. Engineering plastics: PC, PA (Nylon), POM, ABS, PMMA
    3. High-performance plastics: PEEK, PA+GF, TPE
    Unitedparts commonly works with Commodity and Engineering plastics such as FR3005, PP, PVC, PA, PA+GF, ABS, and TPE.

  • Application: Automatic door parts, automotive components, wheelchair assemblies, and electronic housings.

 


 

 

 Features Applications
Injection Molding 1. Uses a single plastic material in one shot.
2. The most common and cost-efficient method.		 · General housings
· Home appliance covers
· Automotive interior components
Two-shot /
Multi-shot Molding		 1. Supports multi-material molding in a single production process.
2. Creates parts that combine both function and appearance(color) in one step.		 · Handles (machine tools, bicycles)
· 3C product housings
· Keypads and buttons
Insert Molding 1. Inserts metal or other parts into the mold before overmolding with plastic.
2. Produces stronger, integrated components in a single process.		 · Electronic connectors
· Metal inserts
· Motor nut inserts