As part of our injection molding capabilities, Crescent Industries provides insert molding services. In insert injection molding, the plastic piece is molded around a metal component or other prefabricated part that is inserted into the mold cavity, creating a completed assembly in one step. Plastic insert molding reduces manufacturing and assembly time, and improves the quality of products and components through a single integrated process.

Insert Molding

Applications for Insert Injection Molding

Insert molding is used in a broad range of industries for a variety of uses and applications. Crescent Industries primarily focuses on insert injection molding for the following sectors:  Medical, Pharmaceutical, Dental, Defense, Safety, Industrial, and Electronics/Electrical.

Within these industries, the applications for plastic insert molding are vast. Some ways in which metal inserts in plastic parts are used include:
  • Strengthening the plastic material — Metal inserts can be added to increase the strength, quality and durability of the plastic material in use, enabling it to stand up to greater impact and more vibration than it normally would.
  • Inserting assembly components — Screw threads and other fastener components are much more secure and durable when manufactured from metal. With insert molding, the plastic part can be molded around a threaded metal core.
  • Knobs and dials — Instead of secondary processes to add knobs or dials to products, they can be molded into the part in a single step. Insert injection molding is typically the best choice for this application, since drilling or other secondary processes would otherwise be required to attach a knob or dial.
  • Electronics — The non-conductive properties of rubber and other plastic elastomers make insert molding a frequent choice for electrical assemblies and other applications where safe connections must be made.

While these examples refer to metal-inserted components, other prefabricated materials may be used, as well.

Types of Inserts for Insert Molding

Inserts can be molded into a diverse range of critical plastic components.  These components can be used in housings, instruments, knobs, and electrical components.
  • Magnets
  • Screws
  • Studs
  • Contacts
  • Spring Contacts
  • Surface Mount Pads
  • Rivets
  • Threaded-Fasteners
  • Clips
  • Pins
  • Bushings
  • Tubes

Insert Manufacturing Capabilities at Crescent Industries

As an expert custom Swiss-screw machined parts manufacturer, Crescent Industries uses CNC automated equipment and highly skilled journeyman and machinists to produce custom, complex precision components.  We have invested in CMMs which are located in our tooling facility to perform quality inspections during the machining process to verify precision and accuracy.  Producing inserts of materials that include:  aluminum, brass, copper, stainless steel, plastics, steel, titanium, and exotic materials.

  • Laser-Etching
  • Anodizing
  • Plating
  • Passivation
  • Deburring
  • Assembly & Packaging

Crescent Industries for your Insert Injection Molded Project!

Insert plastic injection molding is just one aspect of our overall injection molding expertise. Our full suite of services delivers the highest quality and integrity our customers expect and deserve. Whether you need injection molding services from design to production or are seeking assistance in a single area of your development cycle, we are here to help. Our services include:

  • Design assistance— We can work with your concept or design to evaluate for not only the plastic molding process but for complete custom manufacturing of your project through the entire life of the program.
  • Mold design and fabrication — Our quality promise extends to mold design and fabrication, ensuring that you won’t need to work with a separate provider for this key step of your production process. The design and quality of a mold are key factors in your production efficiency and overall ROI.
  • Custom injection molding — This core service is available for any quantity you require.
  • Post Injection Molding Services - We perform parts decorating, kitting, assembly, packaging, and other custom operations required.

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