Plastic Injection Molding Service

Custom injection molding services for prototypes and parts production, get rapid injection molding quotes today!

  • No minimum order quantities
  • ISO 9001:2015 certificated
  • 24/7 engineering support

Save 30% budget in average

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What Makes RapidDirect Ideal for Plastic Injection Molding

strong capabilities

Strong Capability

Our experienced prototype injection molding services provide full list of injection molding processes, along with 100+ materials and surface finishes to suit your custom injection molding needs.

flexible

High efficiency

As an injection molding manufacturer in China, we provide affordable injection molding quotes within 1 business day. In addition, no MOQ rapid injection molding makes it feasible for initial development.

assured high quality

Reliable quality

Quick turn Injection molding with RapidDirect is at ease. We provide free DFM feedback, certifications and production update through the process. You always get high quality custom molded plastic parts.

Plastic Injection Molding Capabilities

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rapid tooling

Rapid tooling

Fast and cost-effective process to create aluminum or steel injection molds for quick turn injection molding. Ideal for rapid prototyping needs or validating product concept for production.

Overmolding

Overmolding is a unique injection molding process that combines two or more components together. It is the best practice for the plastic manufacturing of multi-color and multi-layers products.

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overmolding
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insert molding

Insert molding

Insert molding is a custom injection molding process that encapsulates components in a plastic part. It is most commonly used for prototype injection molding designs with threads and holes.

Liquid Silicone Rubber injection molding

Liquid silicone rubber (LSR) is a flexible prototype injection molding process that produces elastic, durable parts. Get custom prototypes and production parts from 15 days.

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silicone rubber mold
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Plastic Injection Molding Materials

Plastic injection parts have the most variable options for materials, colors, and configurations. Here are the materials RapidDirect provides to make custom injection plastic parts.

Tooling materials

Before injection molding process starts low or high-volume production, a high tolerance CNC machined tooling is needed. Most commonly used materials include:


Tool Steel:
P20
Carbon Steel:
S50C
Aluminum:
5052, 6061

Plastic materials

Plastic injection molding service comes with a wide range of materials with different properties, including impact strength, rigidity, thermal resistance, chemical resistance, etc.

  • ABS
  • Nylon (PA)
  • PC
  • PU
  • PMMA
  • PP
  • PE
  • HDPE
  • PS
  • PC
  • PVC
  • PEEK
  • POM
flexible plastic raw material

Additives and fibers

Standard plastic materials may not meet custom injection molding parts requirement. In this case, additives and fibers can be added to improve aesthetic and functional properties, providing additional features for your injection molded parts.

  • UV absorbers
  • Flame retardants
  • Plasticizers
  • Colorants
  • Carbon fibers
  • Glass fibers
rubber plastic material

Injection Molded Parts Surface Finishes

For most of the injection molded parts, no post-processing is needed. This is because the mold itself are usually finished to different levels and directly affect the surface finish of molded parts.

Glossy

A grade finishes are made using a diamond buffing process and yield shiny and glossy surfaces on injection molded parts.

SPI Standard:
A1, A2, A3
glossy finish

Semi-glossy

B grade finishes use grit sandpaper to produce parts with a slightly rougher finish than grade A parts. Custom molded plastic parts that undergo B grade finishing have a matte surface texture.

SPI Standard:
B1, B2, B3
semi-glossy finish

Matte

C grade finishes use grit sanding stones to produce a rough, uneven surface. Injection plastic parts that undergo C grade finishing have a matte surface texture.

SPI Standard:
C1, C2, C3
matte finish

Textured

D grade finishes use grit and dry glass beads or oxide to produce a very rough textured finish. Depending on the type of material used, products can have a satin or dull finish.

SPI Standard:
D1, D2, D3
textured finish
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Our Quality promise

  • ISO 9001:2015
  • Full dimensional report
  • Material certification
  • First article inspection
  • Reword & refund policy
our quality assurance RD decor dot RD decor Leaf

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