
Low-Volume Injection Molding: Advantages, Applications ... - low volume injectio
Author:gly Date: 2024-10-15
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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.
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Mold halves are attached to the molding platens by the clamp plates. Mold clamps use large bolts to hold them in place; other machines hold the mold onto the platen with magnets.
If you're up for an even deeper dive in the world of plastic injection molding, check out this video from a previous blog post. In it, one of our capable engineers explains the ins and outs of injection molding. The video is about 12 minutes long, and packed with great information.
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.
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.
Filed Under: Plastic Injection Molding, Injection Molding
Located in Boyne City, Michigan, LexaMar Corp. employs 400 people. This manufacturer uses rubber and plastic to produce exterior parts for the automotive industry.
The ejector pins are mounted in an ejector plate. The motion of the ejector plate forward allows the pins to move forward, pushing the part off the core. The ejector retaining plate holds the pins into the ejector plate.
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.
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.
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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.
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.
Cavities are areas of the mold where the part is formed into desired shape. Molds must be balanced, so there are typically only a certain number of cavitations allowed (1,2,4,8, etc...)
• 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.
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.
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.
Plastic flows through the sprue bushing in a sprue, then to individual runners which take the material to the gates - the entry point of the material to the individual cavities.
Located in North Vernon, Indiana, Decatur Mold, Tool & Engineering, Inc. employs 150 people to produce military aircraft parts, car seats and automotive components.
No one would blame you for looking for a glossary of terms right about now. Fear not. Below, we break down the components of an injection mold in simple, easy-to-understand language. It even includes labeled cutaway drawings. I promise, if you didn't understand how an injection mold worked before, you will after reading this.
An injection mold is a tool comprised of a series of parts that allows molten plastic to be formed and cooled in such a way as to create a discrete part shape.
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.
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.
Plastic is injected hot and is cooled by cooling channels that allow conduction to cool the part. Working fluid is typically water, although oil can be used in high temp applications.
Liquified plastic is pushed through the nozzle of the barrel of the molding machine. The nozzle seats against a surface on the mold called the sprue bushing and locating ring, which help center the nozzle to the mold.
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
This emphasis on the domestic market and local suppliers could indicate a potential for expansion on new markets for plastic mold manufacturers.
Cavity and core mold halves are insured to be in proper alignment during mold close by the use of guide pins (or pillars) and guide bushings (or sleeves).
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.
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.
So you've designed a product. You've gone through the RFQ process, sharing your CAD drawings with engineers who probably made even more tweaks. The part is going to be made of plastic using the injection molding process. But you've never made a plastic injected part before. There are a lot of new words and phrases being tossed around and you don't really know what they all mean.
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.
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