With custom injection molding, you can achieve efficiency, craft intricate and complex designs, and significantly reduce material waste. This process allows for consistent, high-quality results, enabling you to meet tight tolerances and exact specifications.

Murray Plastics specializes in custom injection molding and plastic part manufacturing. The company offers various services, including part design, in-house mold building, resin selection, and secondary operations like finishing and fulfillment.

The polymer is left to cool in the mold, where it takes its shape, after which the newly formed part is ejected and taken for further post-processing. By manipulating heat and pressure, this method can reliably mold a variety of products with speed and accuracy.

UPTIVE Advanced Manufacturing is a leading provider of rapid manufacturing solutions that combine cutting-edge technology and personalized service. The company supports every stage of the production process, from prototypes to large-scale production runs, ensuring that each part is optimized for manufacturability and long-term success.

Ironwood Plastics serves various industries, including defense, healthcare, automotive, and electronics. It also offers secondary services and engineering solutions, such as high-temperature resin molding, metrology, and mold flow analysis.

American Tool & Mold, Inc. is a precision mold manufacturing company specializing in mold manufacturing and engineering services. The company focuses on the design of complex, precision, multi-cavity molds tailored for use in the plastic injection molding industry.

Xometry specializes in on-demand precision part production and prototyping manufacturing.  Its services range from plastic injection molding to metal injection molding, die casting, metal stamping, metal extrusion, plastic extrusion, sheet metal, laser cutting, waterjet cutting, laser tube cutting, and tube bending.

Plastic is the most common material used in injection molding processes. The type of plastic used determines the final product’s properties and performance, affecting features such as durability, strength, and thermal conductivity.

In this article, we’ll explore the basics of injection molding processes and review some of the best custom injection molding companies to help you find the right partner for your needs.

Seaway Plastics Engineering, LLC is a contract manufacturing company specializing in plastic injection molding services. The company’s services cover mold design, in-house tooling, cleanroom molding, and finishing operations.

Custom injection molding enables the creation of specialized plastic products that traditional manufacturing methods cannot produce. However, to truly harness this technology’s potential, it is important to partner with the right company with the capabilities, expertise, and materials to bring your creative ideas to life.

Extreme Molding offers services to the consumer and life science industries. In addition to manufacturing, Extreme Molding offers assembly, packaging, and fulfillment.

UPTIVE was built for manufacturers who demand precision, accuracy, and scalability–at incredibly rapid speeds. Is that you? Get a free quote from UPTIVE by simply uploading your design file.

Custom injection molding is a manufacturing process in which molten material, typically plastic, is injected into a mold to create custom-shaped parts. This process produces a range of parts, from final-use parts to rapid prototyping.

Custom injection molding uses various plastic materials, including polyethylene (PE), polypropylene (PP), acrylonitrile butadiene styrene (ABS), and polycarbonate (PC). During the process, the chosen polymer is heated until it reaches molten form, after which it is injected into the cavity of a mold under high pressure.

Nicolet Plastics is a custom plastic injection molding manufacturer that offers engineering services, including product development engineering to ensure manufacturability, project management using Smartsheet for real-time activity tracking, and design consultation during tool construction. Nicolet Plastics also provides insert molding, metal-to-plastic conversion, and post-molding operations.

The Rodon Group offers high-volume precision manufacturing and custom plastic injection molding services to a diverse client base. The company serves industries producing windows and doors, household appliances, and food and beverage.

UPTIVE utilizes state-of-the-art equipment, including high-speed 5-axis CNC machines, EDM, and surface and form grinders, to quickly create steel and aluminum molds for your parts. It also allows you to design custom mold bases for intricate or high-volume projects.

Choosing UPTIVE means partnering with a company that understands the complexities of additive manufacturing and utilizes state-of-the-art equipment, including high-speed 5-axis CNC machines, EDM, and surface and form grinders. These advanced tools allow UPTIVE to quickly create steel and aluminum molds for your parts, even accommodating intricate or high-volume projects–all at incredibly quick speeds.

Additionally, UPTIVE offers an extensive range of plastics, elastomeric materials, and filled composites, specializing in two-shot and insert-molded parts to deliver the speed, quantities, and tolerances you require.

The Rodon Group also offers plastic injection molding, mold designing and building, toolmaking, just-in-time (JIT) manufacturing, quality control and product testing, packaging and order fulfillment.

Extreme Molding is a custom injection manufacturer that specializes in injection molding, overmolding, and compression/transfer, among other services.

Protolabs is a manufacturing service offering solutions for injection molding, CNC machining, 3D printing, and sheet metal fabrication. It offers custom injection molding for plastic parts and supports a wide range of thermoplastics and elastomeric materials. Protolabs’ services include prototyping and on-demand production using two-shot and insert molding processes.

UPTIVE systems are engineered to produce quick-turn parts that meet your standards for precision, durability, and lightweight construction while offering you more design choices, such as complex geometries, undercuts, threads, and more.

Whether you’re looking to produce thousands of identical parts or require flexibility in design modifications, custom injection molding provides the versatility and precision needed for various applications.

Ironwood Plastics, Inc. is a plastic injection molding company that manufactures close-tolerance plastic products. The company provides various solutions, including insert molding, reel-to-reel molding, and two-shot molding.

Seaway Plastics Engineering is ISO 13485-certified and serves the medical, aerospace, defense, and precision industries. The company offers a wide range of industrial—and medical-grade thermoplastics and liquid silicone rubber (LSR) to meet the needs of these industries.

Plastek Industries manufactures plastic packaging for the personal care, beauty, home care, pharmaceutical, and food and beverage industries. The company specializes in industrial design, product and package development, mold design and build, injection, injection blow, injection stretch blow molding, and value-added assembly and decorating.

In an industry full of automated quotes, limited personalization, and faceless transactions, UPTIVE provides customers with personalized support and guidance throughout the design and production process so customers get the best service imaginable.

American Tool & Mold offers two-shot molding, cold runner molding, parts manufacturing, and overmolding. They offer their services to the healthcare, packaging, and automotive industries.