Top 10 plastic injection molding companies in the U.S.

Plastic injection molding is a key process for producing high-quality, precision plastic components for industries ranging from medical devices to automotive parts. The demand for plastic injection molding services continues to grow, and in this article, we take a look at the top 10 U.S. companies providing plastic injection molding services. Including information on their founding year, office locations, types of services, and company profiles.

1. Protolabs

• Year of foundation: 1999
• Office location: Maple Plain, Minnesota.
• Type of business: Digital manufacturing and rapid prototyping
• Basic services: Injection molding, CNC machining, 3D printing, metalworking

• Company Profile:
  Protolabs is one of the world's leading providers of digital manufacturing services. Founded in 1999, the company has revolutionized the manufacturing sector by introducing advanced technologies into traditional injection molding processes. Protolabs specializes in rapid prototyping and low-volume production of complex, custom plastic parts. Their cloud-based platform allows customers to upload their CAD files and receive instant quotes, ensuring orders are processed quickly. The company provides a wide range of services including injection molding with thermoplastics and liquid silicone rubber, CNC machining, 3D printing, and metalworking. With a global presence, Protolabs serves industries such as medical devices, automotive, aerospace and consumer electronics. The company's high quality control standards and automated systems make it the preferred choice for businesses in need of fast, reliable and scalable manufacturing.

2. Rex Plastics

• Year of foundation: 1971
• Office location: Vancouver, Washington
• Type of business: Manufacturer of injection molding products
• Basic services: Mold making, injection molding, product development, assembly

• Company Profile:
  Rex Plastics is a family-owned and operated plastic injection molding company that has been in business since 1971. The company specializes in building custom molds and working with customers to create parts that meet stringent requirements. Rex Plastics has grown into a leader in injection molding through quality manufacturing and superior customer service. The company offers full-service molding including part design, mold making, fabrication, and assembly. Rex Plastics also focuses on environmental sustainability and offers plastics recycling services. Their applications include consumer products, electronics, automotive, and medical industries.

3. EVCO Plastics

• Year of foundation: 1964
• Office location: DeForest, Wisconsin
• Type of business: Plastic injection molding
• Basic services: Injection molding, design and development, mold making, assembly

• Company Profile:
  EVCO Plastics is a global leader in the plastics injection molding industry with more than 50 years of experience. Founded in 1964, the company operates nine manufacturing facilities worldwide, offering injection molding services to industries such as automotive, medical, consumer electronics and packaging. EVCO specializes in complex molds and high-volume production using robotic systems and automation. EVCO's strengths include the integration of advanced technologies such as Industry 4.0 and real-time monitoring systems. The company also offers services in prototyping, mold making, and secondary processes such as assembly and decoration.

4. Nicolet Plastics

• Year of foundation: 1986
• Office location: Mountain, Wisconsin
• Type of business: Manufacturer of injection molding products
• Basic services: Low-volume production, mold making, prototyping, engineering support

• Company Profile:
  Nicolet Plastics specializes in the manufacture of plastic parts using injection molding, with a focus on low to medium volume production. Founded in 1986, the company has built a reputation for producing complex, high-precision parts with fast lead times. Their flexibility in manufacturing processes makes them the preferred partner for companies requiring fast production and customized solutions.

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5. Seaway Plastics Engineering

• Year of foundation: 1984
• Office location: Port Richey, Florida
• Type of business: Injection molding production
• Basic services: Rapid mold making, injection molding, clean rooms, secondary operations

• Company Profile:
  Seaway Plastics Engineering is one of the leading providers of injection molding services for low-volume production. Founded in 1984, the company is focused on producing quality parts for industries such as medical, aerospace and defense. Seaway Plastics is particularly known for its expertise in clean room manufacturing, which is critical for the production of sterile medical components. The company also offers secondary operations such as assembly and packaging, providing customers with finished products that meet the highest standards of quality and purity.

6. HTI Plastics

• Year of foundation: 1985
• Office locationLincoln, Nebraska.
• Type of business: Manufacturer of plastic products
• Basic services: Mold design, injection molding, assembly, medical device manufacturing

• Company Profile:
  HTI Plastics specializes in custom plastic parts for the medical, packaging and industrial industries. Since its founding in 1985, HTI Plastics has focused on manufacturing precision molds and providing the highest quality products. Their medical manufacturing is especially valued for meeting strict standards and utilizing automated systems.

7. Plastic Components, Inc.

• Year of foundation: 1989
• Office locationGermantown, Wisconsin.
• Type of business: Manufacturer of injection molding products
• Basic services: High-volume production, automated molding, engineering support

• Company Profile:
  Plastic Components, Inc. (PCI) specializes in high-volume injection molding of plastic parts using automated technology. Founded in 1989, the company has implemented real-time systems and robotic processes to ensure a high level of quality. PCI's primary industries include automotive, medical devices, and consumer products.

8. Accurate Plastics

• Year of foundation: 1962
• Office location: Yonkers, New York.
• Type of business: Manufacturer of injection molding products
• Basic services: Mold design, production, secondary operations

• Company Profile:
  Accurate Plastics is one of the oldest injection molding plastics manufacturers in the United States and has been in business since 1962. The company offers full service from mold design to mass production. Accurate Plastics is known for their ability to create complex parts with high precision requirements, and they continue to serve industries such as automotive, medical, and electronics.

9. Murray Plastics

• Year of foundation: 1998
• Office location: Gainesville, Georgia
• Type of business: Manufacturer of injection molding products
• Basic services: Injection molding, mold making, secondary machining, assembly

• Company Profile:
  Murray Plastics is a family owned and operated company specializing in the production of plastic injection molded parts. Founded in 1998, the company offers a full range of mold making, injection molding and assembly services. The company works with a variety of industries including automotive, consumer products, medical, and electronics. Murray Plastics prides itself on its personalized approach to each customer, helping them design and manufacture high-quality plastic products. State-of-the-art manufacturing facilities and a team of skilled professionals enable the company to meet the requirements of customers around the world.

10. Vanguard Plastics

• Year of foundation: 1972
• Office location: Suffield, Connecticut
• Type of business: Manufacture of products by injection molding
• Basic services: Mold manufacturing, injection molding, engineering, assembly and packaging

• Company Profile:
  Vanguard Plastics is one of the leading injection molding suppliers in the United States. Since its founding in 1972, the company has been providing customized plastic part solutions for industries such as packaging, medical, consumer products and automotive. The company provides full-service from mold design to product assembly and packaging. Vanguard Plastics has also implemented state-of-the-art automated processes, resulting in significantly shorter production times and improved product quality. With its high level of flexibility and capabilities, the company has earned the trust of many major customers around the world.