Plastic Molding Manufacturers and Companies

IQS Directory implements a thorough list of plastic molding companies and suppliers. Utilize our listing to examine and sort top plastic molding companies with previews of ads and detailed descriptions of each product. Any plastic molding company can design, engineer, and provide plastic molding to meet your companies specific qualifications. An easy connection to reach plastic molding companies through our fast request for quote form is provided on our website. The company information includes website links, company profile, locations, phone, product videos and product information. Customer reviews are available and product specific news articles. This source is right for you whether it's for a manufacturer of pvc molding, vinyl moulding, and thermoplastics injection molding.

  • Denver, CO 303-592-9548

    LTM Plastics is Denver's premium injection molder, serving up quality since 1977. At LTM, you can expect consistent results, transparency and meaningful collaboration. We talk with our customers to determine their needs and then build our processes to deliver the highest quality parts quickly. We have experience but we’re not beholden to the “old ways” of doing things. It’s all about finding the right solution for the situation. Call today and see if we're the right partner for your next project.

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  • Imlay, MI 248-275-1978

    Here at MSI Mold, our injection molding equipment features the latest technology, which ensures consistency and repeatability in our products. Our state-of-the-art equipment also allows for variety in adding various colors and platings to your product. For more in-depth information about the injection molding process and how we can make your desired design a reality, contact us today!

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  • Strongsville, OH 440-238-3009

    For high-quality plastic molding solutions, turn to the experts at GSH Industries! We provide all of our customers full service design and engineering capabilities, in-house tooling, fabrication, and assembly. Visit our website today for more information.

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  • Stuart, FL 772-286-9278

    To us, plastic molding is more than just a business, it is also an art. We believe in creating quality parts that will last and help you meet your needs. Whether you need injection molding or insert molding, or anything in between, we can help you find the right products. Contact us to learn more today!

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  • Riverside, CA 951-354-0258

    Hi-Rel Plastics & Molding, Inc. offers custom plastic molding for a variety of industries. With more than 35 years of experience, our quality products are unparalleled. We process an almost infinite variety of thermoplastic resins, our prices are competitive, our delivery is on time, and we provide superior customer service. Our team has the technical and practical knowledge to develop the perfect solution. We are ISO 9001:2015, AS 9100 Rev D, 13485:2016 Certified.

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  • Tempe, AZ 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!

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  • Valencia, CA 844-574-2040

    Valencia Plastics is your leading full-service injection molded plastics manufacturer. Our products are made with various materials, including urethane, polyurethane, nylon, acrylic, and polycarbonate. We offer a wide range of sizes from miniature items up to 7 lbs. large parts. We are ISO 9001:2015 compliant. Industries we serve include electrical, military, automotive, aerospace, and agricultural.

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Plastic Molding Industry Information

Plastic Molding

The process of plastic molding involves the creation of molded plastic products using molten polymer resin or molten plastic. Materials such as wood and metal are difficult to mold, especially into configurations that are small and complex. These materials also cannot melt and be reformed, which can lead to a high amount of waste. However, plastic is highly malleable and can be turned, squeezed, twisted, or bent into countless shapes.

Quick links to Plastic Molding Information

Applications of Plastic Molding

Due to its wide range of beneficial properties, plastic has become a highly popular alternative material to wood and metal. Because of its versatility, plastic molding is a wise choice to fabricate a variety of products spanning a wide range of industries, and it is the most common manufacturing technique used to fabricate these products. Items that we see and use every day, such as children’s toys, automobile dashboards, and bottle caps, are made by way of plastic molding.

Plastic molding is used in many of industries, such as:

  • Automotive
  • Computers
  • Plumbing
  • Medical
  • Food Service
  • Consumer

Materials Commonly Used in Plastic Molding

A popular material to use for plastic molding is a plastic polymer, such as elastomers, thermosets, and thermoplastics. Plastic polymer is a popular choice due to its pliability.

The materials used in plastic molding have differing characteristics. Thermoplastics can be heated and melted down to a pliable state and then molded into a wide range of configurations. Once shaped, the thermoplastic material can be readjusted if necessary. However, in freezing temperatures, thermoplastic can become brittle. Thermosets, including polyimides or melamine resin, are hard and brittle once they dry. Unlike thermoplastics, they cannot be readjusted or remolded once they have set. Elastomers, the most common form of which is rubber, maintain their elastic properties after they have cooled. There are some products that benefit greatly from the elasticity, including tool handles and children’s toys. There are other products where elasticity is required.

Process of Plastic Molding

The first step of the plastic molding process involves placing the desired material, in pellet form, into the machine’s hopper in preparation for melting. Next, the pellets are moved to a chamber where they are heated until they reach a molten liquid state. In this state, manufacturers can add agents such as dyes or other chemicals that will affect the final appearance of the product. Once the molten plastic is mixed, it is placed and enclosed into a mold cavity. With pressure, the material completely conforms to the design of the mold. Cooling agents that circulate cold liquid within the mold assist in the removal of heat from the plastic, allowing the material to cool and fully solidify. Once the material is set, the mold can be split in two, releasing the fully formed product. Sometimes, a set of rods or pins is needed to safely remove the product from the mold. Once removed, the process begins all over again.

Plastic molding involves a prefabricated mold and melted plastics. However, there are other manufacturing methods available such as vacuum forming, compression molding, blow molding, and injection molding. The type of molding process is typically dependent on the intended purpose of the final product. Because of the ability of the plastic molding process to generate products at a fast rate and at close tolerances, it can be used for purposes such as prototyping and mass production.

Benefits of Plastic Molding

Plastic molding comes with numerous advantages. First, the process has a fast turnaround time. The speed may vary depending on the product’s complexity, but, in general, the turnaround time is very short. In addition, the plastic component is often ready as soon as it leaves the mold, and it usually does not need to undergo any further processes, such as surface finishing. The vast majority of plastic molding machines are automated, so they require little to no manual input. As a result, plastic molding machines are safer to use and they keep labor costs down. Plastic molding equipment keeps wastage costs at a minimum. They generate only a small amount of waste with every cycle, and the small amount of waste produced can be easily reused and recycled for other molding processes.

Factors to Consider When Using Plastic Molding

One disadvantage to the plastic molding process is the initial cost of the equipment. The molds and the machinery can cost several thousand dollars. However, both the molds and equipment are engineered to last, and the products they generate are at a low cost. Therefore, there are numerous industries that swear by the plastic molding process. Plastic molding is a highly recommended process for manufacturing products, and its advantages far outweigh its drawbacks.

More Plastic Molding Information

Plastic Molding Informational Video


Diversified Plastics, Inc. and Pacific Plastics Injection Molding synergies benefit customers and employees

MINNEAPOLIS—Diversified Plastics, Inc. (DPI) and Pacific Plastics Injection Molding (PPIM) have advanced their resources through collaboration and shared capabilities. As a result of efforts since DPI acquired PPIM at the end of 2018, customers and employees have benefited from the synergies between the two businesses. Customers benefit from added capabilities and PPIM employees are looking forward to being eligible for the employee stock ownership plan (ESOP). Combined, DPI and PPIM have more than 100 employees in facilities totaling 73,000 square feet. Delivering small to large production runs of plastic injection-molded... Read More About This