Located in Boyne City, Michigan, LexaMar Corp. employs 400 people. This manufacturer uses rubber and plastic to produce exterior parts for the automotive industry.

This Ironwood, Michigan, manufacturer creates molds for products with precise requirements. Ironwood Plastics, Inc. and its 155 employees use advanced techniques like pressure monitoring, laser scanning and mold flow analysis to create specialized molds.

• 8% of plastic mold manufacturers import raw materials, which is slightly lower than the 11% average across all manufacturers.• 76% of plastic mold makers focus on domestic distribution. This is slightly higher than the 70% of all manufacturers that sell their products on the domestic market.

CompanyCityState Number of EmployeesPlastek Industries, Inc.EriePA850LexaMar Corp.Boyne CityMI400Jones Plastic & Engineering Co., LLCLouisvilleKY300Hi-Tech Mold & Engineering, Inc.Rochester HillsMI200MMI Engineered SolutionsSalineMI192American Tool & Mold, Inc.ClearwaterFL180Ironwood Plastics, Inc.IronwoodMI155Seaway Plastics Engineering, LLCPort RicheyFL151AlwinClintonvilleWI150Decatur Mold, Tool & Engineering, Inc.North VernonIN150

Located in North Vernon, Indiana, Decatur Mold, Tool & Engineering, Inc. employs 150 people to produce military aircraft parts, car seats and automotive components.

If you are looking for a plastic injection molding company that provides engineering consultation, quality tooling and manufacturing solutions with high temperature resins like Ultem and Valox, Southwest Plastics in California is a preferred choice by the automotive, aerospace and US defense & military sector. The engineers at Southwest Plastics have worked closely with manufacturers such as Boeing to create sub assembly components based on rigorous high-temperature plastic molding requirements.

The industrial marketplace IndustryNet continues to see heightened domestic sourcing activity, including greater demand for plastic injection molding services, which reported thousands of searches from industrial buyers interested in plastic injection molding in 2020. Year-over-year category searches on the industrial marketplace IndustryNet were up 27% in 2020, while requests-for-quotes rose 102.1% and catalog downloads increased 21%. This trend reflects the growing number of manufacturers looking for domestic supplies, including plastic injection molding companies.

Located in Saline, Michigan, MMI Engineered Solutions employs 192 people. This manufacturer has an in-house design team and uses injection and blow mold techniques to produce powertrain, exterior and interior parts for the automotive industry.

We have seen many companies lose their design ideas in the far east due to intellectual property theft. There is no better benefit for the long-term success of a company than partnering with a manufacturer that values your design and intellectual property rights. In this regard, Southwest Plastics is the leading California Molder that meets these qualifications.

As U.S. manufacturers continue to contend with disruptions to the global supply chain, manufacturers are looking to source more supplies at home. One study found that 62% of manufacturers plan to source more supplies domestically in 2021.

Outside of flame resistance, Ultem provides low smoke evolution and low smoke toxicity. It is popular also, in part, due to its level of chemical stability including long-term hydrolytic and dimensional stability. Imagine your application in high heat conditions approaching 700 degrees Fahrenheit, yet your PEI material continues to perform at an exceptional level of strength and rigidity. It’s these high tolerances for heat and pressure resistance that make PEI formulations like Ultem the perfect substance for many automotive and aerospace applications.

A number of contemporary engineers are beginning to realize the potential in PBT polymer products, specifically Valox™ specialty resin. With over 55 available grades, Valox™ resins can offer solvent resistance, outstanding dielectric strength, a wide variety of electrical properties, High RTI of up to 284 degrees Fahrenheit, low temperature performance down to -40 degrees Fahrenheit, and flame resistance. From an applications standpoint, Valox performs well in power plugs and electrical components, circuit breaker enclosures, outdoor telecommunications enclosures, medical applications such as clamps, pump parts, and much more. Our engineers are able to specify the use of Valox resins for different applications during prototyping test runs and full production runs.

The reason we share this information is simply to provide the confidence to US based companies to opt out of creating tools in China where intellectual property is simply not protected. The cost of tooling and engineering in the USA is marginally higher but the quality and protection over your design is key.

Seaway Plastics Engineering, LLC has 151 employees and is located in Port Richey, Florida. This company specializes in engineering and low-volume runs. It creates products for the packaging, defense, medical, transportation and electronics sectors among others.

If you are looking to utilize Ultem Polyetherimide (PEI) in your product prototype or production run, our team of engineers are familiar with every caveat, use case, benefit, and restriction around this specialty material.

Plastek Industries, Inc. has locations in four countries. Its Erie, Pennsylvania, headquarters is the largest plastic mold manufacturing facility in the US with 850 employees. They manufacture products like packaging for the beauty and cosmetics industry, food and beverage products, stock packaging options, and pharmaceutical packaging.

Today we're taking a quick look at some additional facts on the plastic injection molding industry and exploring the top ten plastic injection companies in the United States.

Are you looking for sales leads in the the plastic injecton molding industry or the manufacturing world at large? Access comprehensive profiles of 500,000 industrial businesses and one million executives with IndustrySelect. Try a free demo of IndustrySelect and reach new prospects in the industrial world!

Meanwhile, the global market for injection molded plastics is expected to reach a value of $473.4 billion by the year 2027. Currently, the industry is valued at $339.3 billion.

Alwin offers design and product development services to create customized solutions. This Clintonville, Wisconsin, manufacturer has 150 employees and also produces commercial towel and napkin dispensers.

American Tool & Mold, Inc. produces plastic molds used by other manufacturers. This Clearwater, Florida, company has 180 employees and can create customized molds for a wide range of applications, including multi-cavity molds and precision molds.

This Louisville, Kentucky, manufacturer has 300 employees. Jones Plastic & Engineering Co., LLC uses injection molding techniques to produce automotive parts, packaging, electronic components and products for the medical industry.

IndustrySelect provides clients with touch-point data for potential leads, including direct executive contact information and other actionable data among 500,000 companies in the manufacturing and energy sector.

Editor's Note: A version of this post was originally published in June 3, 2020. It has been updated to include current trends and statistics.

Ultem is an amorphous, high-performance polymer that can withstand extreme temperatures. In previous projects we have utilized Ultem due to its ability to perform at temperatures as high as 700 degrees Fahrenheit. Since its development in the early 1980’s, Ultem continues to be widely utilized in the aerospace industry. Our engineering team is able to provide initial engineering consultation services in order to ensure that the material being utilized matches the project spec and that manufacturing occurs to the highest degree of precision. Ultem is an excellent ingredient that can achieve flame retardancy of a UL 94-VO rated standard.

According to MNI, the century-old data compiler that powers IndustrySelect's industrial database subscription, the plastic injection mold industry is a fairly small and specialized sector with 555 US-based companies. Half of these manufacturers are located in the Midwest.

Southwest Plastics is a proven engineering firm with extensive experience in plastic injection molding for US Defense applying both Ultem and Valox to the formulation. Our project in questions is still highly confidential but we can confirm that our contribution was to a sub assembly part that was unique to a compressor module that goes into a cockpit. Our commitment to engineering and manufacturing the part was to:

Hi-Tech Mold & Engineering, Inc. is located in Rochester Hills, Michigan. Its 200 employees work on components for vehicles, appliances, medical devices, and solutions for the aerospace and defense industries.

Whether you’re looking to re-shore back from China to the USA, or are looking to grow your business within the states, Southwest Plastics is a premium solution in the marketplace for specialty plastics manufacturing. We’re a family-owned business that has provided generations of loyalty to its customer base. Our integrity and honesty have earned us the trust of many customers over the years. There aren’t many unique plastic tooling and injection molding company’s left in the USA - we are proud to serve a variety of sectors and will continue to innovate with you.

This emphasis on the domestic market and local suppliers could indicate a potential for expansion on new markets for plastic mold manufacturers.