Injection Moulding

Injection Molding Service for Custom Parts

Plastic injection molding is an efficient, affordable way to make end-use production parts. Our team at PRIMO Corporations offers end-to-end services at our family-owned facility

Make the move from prototyping to on-demand manufacturing for affordable, high-quality molded parts within days. Better yet, your prototyping tool is free once you shift to an on-demand manufacturing tool. Working with a single supplier that provides free design consultation services also massively speeds up the manufacturing process, allowing for greater supply chain flexibility, more consistent parts, and making qualification a breeze.

In injection molding, the material melts and is then injected under pressure into a mold. The liquid plastic cools and solidifies. The operation can be carried out with many materials (metals, glass, thermoplastics, etc.)

Quality Plastic Injection Molding Services

Primo Corporations is a world-class provider of advanced plastic injection molding services. We offer a complete manufacturing solution that covers every aspect of raw material verification, tool making, part fabrication, finishing, and final inspection. Our international team of manufacturing experts is committed to providing you with the highest level of professional support for plastic injection molding services of any size or complexity.

Molding is a manufacturing process that involves shaping a liquid or malleable raw material by using a fixed frame, known as either a mold or a matrix. The mold is a hollow cavity receptacle, commonly made of metal, to pour liquid plastic, metal, ceramic, or glass material. In most cases, manufacturers derived the mold from the initial pattern or template of the final object; its main objective is to reproduce multiple uniform copies of the final product. The liquid must cool and harden inside the mold to achieve the final configuration. Injection molding services generally use a release agent or ejections pins to remove the mold.

Modern molding processes include plastic injection molding, Liquid Silicone Rubber (LSR) molding, overmolding, and insert molding. The plastic injection molding process could produce customized prototypes and end-use parts. The standard process eliminates the use of embedded heating or cooling lines within the molds so that molders, also known as molding technicians, can carefully monitor fill pressure, aesthetics, and overall part quality.

Liquid Silicone Rubber (LSR) molding is a highly flexible material, meaning its molded state is permanent and remelted; it is not possible at all, contrary to thermoplastic. For CNC Machining, you need a specifically designed LSR molding tool, thus providing different surface finish options for the end-use LSR part.

Overmolding allows a single part to contain multiple materials. Once you have the molded substrate part’s entire run, you can set up overmold tooling on the press. It is then hand-placed into the mold and overmolded with either a thermoplastic or liquid silicone rubber material. Insert molding is similar to overmolding, but most commonly uses a preformed metal substrate part that overmolds it with plastic to create the final piece.

In injection molding, the material melts and is then injected under pressure into a mold. The liquid plastic cools and solidifies. The operation can be carried out with many materials (metals, glass, thermoplastics, etc.). With new materials being tried regularly, the type of material is becoming broader with new technologies. However, the most commonly used are:



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  • Polypropylene (PP) represents about 38% of the world’s production. For example, it is used for bottle caps as it is suitable for contact with food products, ABS, which makes up 27% of the production. Lego appreciates it for its high impact resistance. Each brick is thus designed with tolerances of up to 10 micrometers,
  • polyethylene (PE), 15%,
  • Polystyrene (PS), 8%. 

Considering all other possible manufacturing technologies, injection molding of these four materials alone represents more than 40% of all plastic parts produced worldwide yearly. The automotive industry is one of the industries participating in its growth since almost all plastic components in the interior of a car are injection molded. The industry particularly exploits 

  • Polypropylene (PP) for non-critical parts,
  • PVC for its good weather resistance,
  • ABS for its high impact resistance.

At least one of these materials can be incorporated into more than half of a vehicle’s plastic parts, including bumpers, interior body panels, and dashboards.

In another area, the casings of most consumer electronic devices are injection molded. ABS and polystyrene (PS) are the most popular because of their incredible durability and good electrical insulation.

This process is becoming more and more popular due to its extremely low unit cost in high-volume production. For example, this technology can produce 1,000 to 100,000 units for $1 to $5 each. It offers high repeatability and good design flexibility.

Injection molding and injection molding service have gained global popularity. Worldwide, the injection molded plastics market was valued at around 265.1 billion U.S. dollars in 2020. The plastics injection molding industry is anticipated to grow at an astonishing rate of 4.6% each year from 2021 to 2028. Many determining factors set the market price for injection molded products. This market expense is set by the costs of:

  • raw materials
  • construction/equipment costs
  • labor 

Depending on the complexity of the process and final product, these numbers can translate to a costly injection molding plastics manufacturing process. Continue reading to follow Dassault Systèmes’ tips for costs without sacrificing the quality of the final product.

Get A Quote for your Injection
Moulding Service 

Our network of Injection service providers offers hundreds of materials for your project, Plastic (ABS PC, ABS, PA, PVC, PEI, HDPE, LDPE, PEEK, PA, PC, POM, PP, PS, TPE, TPU, etc…), Metal (Stainless steel, Aluminium, etc…) or Composite (PA Glass, etc…), and processes Injection Molding, Casting, Blow Molding and Vacuum Molding. 

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