Plastic Injection Molding

A reliable source for Injection Molded Plastics information and leading Injection Molded Plastics Companies & Manufacturers.

It is the most common manufacturing technique employed in the making of the plastic objects we use each day, ranging from automotive dashboards to bottle caps and children’s toys. Read More…

Plastic Injection Molding Plastic injection molding is the process of using molten plastic and an injection mold machine to create molded plastic products.

Leading Manufacturers

Cleveland, OH  |  440-238-3009

You won’t find better quality injection molded plastics anywhere else in the industry. We have built ourselves up from a small manufacturing company to a large company with decades of experience.

Request A Quote

GSH Industries, Inc. $$$

Holland, OH  |  419-867-3900

In business since 2003, ICOMold has gained a reputation as a leader in low-cost, high-quality injection molded plastics. Headquartered in Holland, Ohio, we serve many industries and provide injection molded plastics to customers around the globe.

Request A Quote

ICOMold $$$

Shelby Township, MI  |  248-275-1978

If you are in need of injection molded plastic parts that are of consistent quality, look no further than MSI Mold! We have over 30 years of experience in design, production, and tooling of custom plastic parts.

Request A Quote

MSI Mold $$$

Stuart, FL  |  772-286-9278

We may have started small, but today, we offer our products and services to companies around the world. We are dedicated to our customers, and our goal is to offer better service and pricing to any customer no matter the size.

Request A Quote

Britech Industries $$$

Riverside, CA  |  951-509-6918

Call Molded Devices for a fast, competitive quote on plastic molding, plastic injection molding, and medical injection molding services. A wide range of standard & proprietary caps, covers & containers plus custom components for all your needs. We are your one-stop for design consult, quick prototyping, custom formulations & secondary operations!

Request A Quote

Molded Devices, Inc. $$$

Riverside, CA  |  951-354-0258

At R.M.Tool, we provide custom CNC Machining to help our customers solve some of their toughest machining needs. Our state-of-the-art CNC machining department is equipped with Milling, Turning and Wire EDM Machining Centers. We can process materials such as Steel, Stainless, Aluminum, and other Exotic Materials. We strive to always please our customers by always delivering quality products. From design to finished product, R.M.Tool is your one stop shop for all of your CNC machining needs.

Request A Quote

Hi-Rel Plastics & Molding $$$

Mountain, WI  |  715-276-4200

Nicolet Plastics is an injection molder that specializes in molding of complex parts from our two world-class facilities in Mountain, WI and Jackson, WI. We service our customers by offering solutions to all your molding needs including Carbon 3D printing and post molding / assembly. Our Mountain plant focuses on low to medium runs while our Jackson plant focuses on medium to high volume work. For over 30 years, we have achieved steady growth due to our fast, flexible team and great customer service.

Request A Quote

Nicolet Plastics $$$

St. Charles, IL  |  847-697-2840

We serve a wide range of industries with custom injection molded plastic parts of close tolerance and injection molded components and assemblies. Our engineering department's expertise even extends to determining which material is best for you, from our database of 30,000 materials. Our manufacturing capabilities include injection molding, Decoupled Molding Process, Process Development, Process Monitoring, and Value Added Services.

Request A Quote

Wise Plastics Technologies $$$
placeholder image GSH Industries, Inc. ICOMold MSI Mold Britech Industries Molded Devices, Inc. Hi-Rel Plastics & Molding Nicolet Plastics Wise Plastics Technologies

The process of plastic injection molding is used for mass production and prototyping because of its ability to yield high runs at close tolerances. Injection molding is commonly used in the consumer, food service, medical, plumbing, computer and automotive industries, as almost any plastic object can be made from a plastic injection mold. Plastic molding has many advantages including: fast turnaround times, low labor costs and the ability to make complex plastic products.

Waste produced during the molding process is minimal because material is injected into a precisely cut mould. There may be a joining line where the two halves of the mold cavity meet, but the amount wasted is negligible and can be removed during finishing. Any other plastic material waste can easily be recycled for use in further production runs.

Plastic Injection Molding Machine Plastic Injection Molding - Britech Injection Molded Plastics

Another advantage of plastic injection molding is the wide variety of materials available for use in the manufacturing process. Material choice is usually dependent on the intended use and function of the product. Most molded plastic products are made from thermoplastics, which become more pliable when heated and rigid when cooled. Thermosets and elastomers, like rubber, are also used in the injection molding process.

The basic machinery used in the process of plastic injection molding consists of a hopper - where the plastic pellets are placed prior to being heated. The plastic material is then fed into a heating unit where it is heated and mixed until molten, at which point dyes or other chemical agents can be added to change the final appearance and feel of the product. The two halves of the injection mold are clamped together under pressure and then the molten plastic is injected into the mold - an inverse of the desired shape of the part being made.

The plastic is then left for a short time to cool and harden before the two halves are separated and the plastic part is ejected out of the mold using ejector pins or rods. Plastic injection molding is a highly beneficial manufacturing choice, yet a disadvantage to be considered is the initial expense of the plastic injection mold that will need to be designed and engineered. However, the many advantages outweigh this expense for many manufacturers.

Plastic Injection Molding Informational Video