Injection Molding

Plastic Injection Molding

Our plastic injection molding process produces custom prototypes and end-use production parts in 15 days or less. We use aluminum molds that offer cost-efficient tooling and accelerated manufacturing cycles, and stock more than 100 different thermoplastic resins.

25 to 10000+ parts shipped in 15 days or less

Molds starting at 1999$

Common Applications
  • low-volume production
  • bridge tooling
  • pilot runs
  • functional prototyping

How Does Plastic Injection Molding Work?

The thermoplastic injection molding process at BEPL is a standard process involving an aluminum mold with no heating or cooling lines running through it, which means cycle times are a bit longer. It allows our molders to monitor fill pressure, cosmetic concerns, and the basic quality of the parts.

Resin pellets are loaded into a barrel where they will eventually be melted, compressed, and injected into the mold’s runner system. Hot resin is shot into the mold cavity through the gates and the part is molded. Ejector pins facilitate removal of the part from the mold where it falls into a loading bin. When the run is complete, parts (or the initial sample run) are boxed and shipped shortly thereafter.

Watch: Knit Lines in Molded Parts

See how knit lines in molded parts can impact overall functionality and how to reduce them.

Molding Options: Prototyping or On-demand Manufacturing?

Consider part quantities, lifetime maintenance, level of inspection, and cost when determining which option is right for injection molding.

Design Guidelines

Our basic guidelines for over-molding and insert molding include important design considerations to help improve part manufacturability, enhance cosmetic appearance, and reduce overall production time.

 

VIEW GUIDELINES >

Thermoplastic Materials

Choose from production-grade thermoplastic resins ranging from ABS, PP, PC and nylon to high-performance resins like PEEK and PEI. A number of colorant options are available and customer-supplied thermoplastics are also accepted. 

 

VIEW MATERIALS

RESOURCES

Digital Manufacturing for Dummies

Compare the various 3D printing , CNC machining, and injection molding technologies and learn how to leverage each process to get the products to market fast.

Get Dummies Book

Designing for Moldability: Fundamental Elements

Learn what product designers must consider when designing a part for injection molding, including:warp surface finish, stress, resin additives, and more.

Read White Paper

How to Choose the Right Thermoplastic

In this webinar, we examine material properties and provide guidelines to help you choose the right thermoplastic material for your application.

Watch Webinar

Design for Maufacturability

View an injection molding sample quote to experience BEPL quotes free analysis.

View Sample Quote

Free moldability analysis within hours