Why is insert molding and encapsulation needed?


Insert molding is a manufacturing process which uses advanced injection molding technology in order to combine thermoplastic and metal components into diverse finished parts. This process has transformed the whole scene of modern day manufacturing.

The automated machines of today put different and variety of metal inserts into specially designed molds. These molds are surrounded with thermoplastics to create a custom or a unique product.  This enhanced efficiency creates insert molding that is used nowadays to manufacture products for a wide range of applications and usages. Some of these applications include:

  • Medical premises
  • Pharmaceutical premises
  • Defense and Armed force materials
  • Safety Materials
  • Aerospace Materials
  • Electronics and
  • Consumer industries

The insert molding process is used for both low to high volume production processes.

Convenience and Capability Production Metal Inserts

This insert molded part can be inserted into the mold automatically or by hand as pleased. The moment the plastic is injected into the mold, it starts to fill in the features around the insert. It creates an assembled and incorporated component which is immediately ready for usage.

The insert molding process can also cause the components to be more tightly secured within the plastic resin. It also helps strengthen the part’s reliability. Another benefit can be a strong resistance to vibration and shock.

Once automated for this process, all the machines insert the metal parts into the specially designed molds. Then they wrap the inserts with thermoplastics which help create the custom product.

In house insert productions mean that outside vendors are not required anymore which can save both time and cost, this is what RRI Rim is doing. Deciding to outsource insert production means needing to make sure that you are choose a manufacturer with ISO and ITAR certifications. It is required for verification and proper monitoring, and for the production of highest quality product possible.

Why Insert Molding for Plastic Components?


Insert Molding combines both metal and plastics. It also provides multiple combinations of materials and components into one single unit. This process also makes good use of engineering plastics for improved wear and tear resistance. It also provides significant tensile strength and weight reduction. It also uses metallic materials for both strength and conductivity.

Insert molding can also reduce assembly and labor costs. It reduces the size and weight of the parts all the while improving the component’s reliability. Insert molding has improved part strength and structure with effective design and flexibility.

Injection Molding Insert Uses:

The different varieties of inserts that can be molded into plastic components include:

  • Screws
  • Studs
  • Clips
  • Spring contacts
  • Pins
  • Surface mount pads
  • Rivets
  • Threaded fasteners
  • Tubes

These are all made from materials such as brass, stainless steel, aluminum, copper and nickel.


Insert molding components can also be used in housings materials, different instruments, knobs, devices and electrical components. This also helps create a wide variety of applications in the medical, defense, aerospace, electronics, electrical, industrial and consumer market.