The Top 25 Injection Molding Companies in New Hampshire

Explore the top plastic injection molding companies in New Hampshire because knowing their expertise and offerings could be instrumental in the success of your manufacturing project.

Exploring the vast landscape of New Hampshire’s manufacturing sector reveals a thriving ecosystem of plastic injection molding companies. From the creation of intricate components to large parts, these specialists bring a wealth of expertise in a range of industries, contributing to the state’s vibrant economy while driving technological innovation forward.

Join us as we delve into the world of plastic injection molding in the Granite State.

Precision Solutions Incorporated East

Company: psimp.com

Contact phone: (603) 569-5100

Facebook page: Facebook

Services:

• Standard injection molding
• Structural foam molding
• Gas assist and gas counter pressure molding
• Product development and engineering
• Assembly, finishing, and graphics application

PSI Molded Plastics has several locations offering injection molding services. These services include standard injection molding, structural foam molding, gas assist molding, and counter-pressure molding. The company also has in-house secondary processing capabilities, such as sonic welding and heat welding. Additionally, they offer product enhancements like assembly, painting, and applied graphics. PSI Molded Plastics provides product development and engineering services to ensure the optimal design of the product.

PSI Molded Plastics

Company: psimp.com

Contact phone: (603) 569-5100

Services:

• Small to Large Part Injection Molding
• Structural Foam Molding
• Gas Assist Molding
• Custom Color Matching
• High Volume Manufacturing

PSI Molded Plastics is a company formed by the combination of Plastic Solutions, Inc., GI Plastek Corporation, and Precision Southeast, Inc..

With plant locations in the Northeast, Southeast, and Midwest, the company specializes in both large and small part molding, finishing, and high and low volume manufacturing.

PSI Molded Plastics also offers custom color matching, in-house paint line, structural foam & gas assist molding, and has high volume production capability.

Tech NH Inc

Company: technh.com

Services:

• Design and Engineering
• Mold Making
• Production Injection Molding
• Assembly
• Market Entry Strategy Assistance

The injection molding company excels in design for manufacturability, mold making, and production of injection molding. They have specialized engineers that ensure product quality while driving costs down through efficient and compliant procedures. Client testimonials highlight the company’s exceptional service quality and superior mold production performance.

Advantage Plastic Products, APP

Company: app-nh.com

Services:

• Leadership in design, manufacturing, and service for injection molding
• Tailored plastic injection molding to specific customer specifications, quality standards, and timeframe
• Processing capability for both commodity grade and high-performance, engineering-grade plastics
• Development of custom injection molds and molding for various markets including industrial, electronic enclosures, laboratory ware, environmental, and consumer goods
• Comprehensive suite of services including engineering and design, tooling, molding, and related secondary operations.

ACW Plastic Products, Inc. aka Advantage Plastic Products (APP) is an established company specializing in custom plastic injection molding. They offer a range of comprehensive services from initial design to molding and secondary operations, catering to a diverse market including industrial, electronic, lab ware, environmental, and consumer sectors.

Their manufacturing facility houses presses of various sizes, proficient in handling both commodity grade and high-performance engineering-grade plastics.

Granite State Plastics

Company: granitestateplastics.com

Services:

• Molding & Assembly
• Plastics Engineering
• Quality Assurance
• Tooling & Automation
• Technically Capable

Granite State Plastics is a dependable and innovative injection molding company located in Hudson, New Hampshire. Their professional team provides tight tolerance components for industries such as automotive, medical, and military.

Their fully equipped 50,000 square foot facility offers services including molding, assembly, plastic engineering, quality assurance, tooling, automation, and robust analytical solutions.

Granite State Plastics

Company: granitestateplastics.com

Services:

• Plastic Injection Molding Services & Assembly
• Medical Molding
• Automotive Molding
• Military Molding
• Industrial Molding

The injection molding company, operational since 1969, positions itself as an essential part of its clients’ manufacturing processes. The company has expertise across various sectors including medical, automotive, military, industrial, and consumer goods, with notable strength in the medical/healthcare field forming approximately half of its overall business. Besides molding, the company provides assembly services for plastics and has accrued multiple certifications.

New Hampshire Injection Molding

Company: sites.google.com

Services:

• Education and understanding of business requirements
• Adherence to handling manuals
• Recognition and application of mechanical properties
• Knowledge of best molding techniques
• Awareness of resin drying time, heat history, and molding temperatures

The injection molding company, based in Manchester, New Hampshire, credits its success to a careful selection process, emphasizing the importance of understanding client requirements.

Their team is well-informed in handling and applying mechanical properties as defined by material manufacturers.

Moreover, they demonstrate proficiency in utilizing optimal molding methods, fully aware of factors such as resin drying time and molding temperatures.

Molded Devices Inc

Company: moldeddevices.com

Contact phone: (800) 852-1472

Facebook page: Facebook

Services:

• Extrusion and engineering of tubing and catheters into various medical device components.
• Provision of a full range of secondary operations, inclusive of injection molding and over-molding.
• Offering services like bonding, tipping, flaring, assembly, and sterile packaging.
• Facilitating additional features such as decorating and further operations.
• Support for medical contract manufacturing needs, including custom stylets, catheters, and shrink tube marker bands.

Molded Devices Inc., having acquired Medefab in 2020, operates as a full-service OEM manufacturer specializing in engineering tubing and catheters for the medical industry.

With a diverse range of services including injection molding, over-molding, and sterile packaging, MDI Jaffrey supports diverse medical contract manufacturing needs from custom stylets to shrink tube marker bands.

As an FDA Registered Facility, it operates under an ISO 13485 accredited Quality Management System, prioritizing safety and regulatory compliance in all its finished products.

PSI Molded Plastics – Wolfeboro

Company: m.facebook.com

Facebook page: Facebook

Services:

• Injection Molding Services
• Product Design & Engineering
• Value-added Manufacturing Services
• Post Mold Finishing Services
• Mold Maintenance & Tooling Services

PSI Molded Plastics – Wolfeboro is a proficient entity in the injection molding industry, renowned for its high-quality molded plastic products.

The company excels in various molding techniques, deploying advanced technology to ensure customer satisfaction.

Its expertise spans across diverse sectors, marking a distinctive presence in the market.

NA Plastics Ltd

Company: naplasticsltd.com

Contact phone: (603) 644-1660

Services:

• Custom plastic injection molding
• Blow molding
• Concept design to production services
• Custom blow molded plastic products including bottles, bellows, and specialty containers
• Quality testing and assurance for molded products

North American Plastics, Ltd., an ISO certified company, offers custom plastic injection molding and blow molding services across North America. Leveraging 40 years of experience and state-of-the-art equipment, they produce a diverse range of products including bottles, bellows, and unique specialty containers. The company is recognized for their expertise, quality assurance, and cost-effectiveness in producing custom blow molded plastics.

GI Plastek, Precision Southeast

Company: plasticstoday.com

Services:

• Custom injection molding with structural foam, gas assist, and straight injection molding
• Value-added assembly and secondary finishing operations, including painting, inserting, and decorating
• Metal-to-plastic conversions
• Rapid prototyping and tooling
• Overmolding and in-mold assembly with services such as assembly, ultrasonic welding, leak testing, and pad printing and hot stamping.

The merger of GI Plastek and Precision Southeast Inc. has led to the formation of PSI Molded Plastics Inc., a custom injection molding company operating facilities in New Hampshire, South Carolina, and Indiana.

The newly formed entity, funded by Citizens Bank’s Commercial Banking unit, offers a wide spectrum of plastic injection molding capabilities, including structural foam, gas assist, straight injection molding, and a variety of engineering services.

It also utilizes press sizes ranging from 20 to 1,574 tons, alongside offering value-added assembly and secondary finishing operations.

Hy-Ten Plastics

Company: hy-ten.com

Services:

• Custom plastic injection molding services with a focus on tight tolerance
• Provision of end-to-end injection molding solutions from concept to sustaining supply
• Design, development and delivery of medical molding solutions like blood filtration and complex disposable assemblies
• Design and manufacturing of plastic enclosures for diverse applications such as handheld printer assemblies and wireless communication housing
• Development of specific industrial solutions, including thick walled parts, molded in bearings and filtration system components.

Hy-Ten is a full-service custom plastic injection molding supplier specializing in tight tolerance plastic molding and associated services, serving sectors like medical, electronics, industrial, and consumer industries for over five decades.

With comprehensive solutions adding value in each step of the chain from conception to sustained supply, they offer specialized services in areas such as blood filtration, IV drip valves, complex disposable assemblies, and industrial problem-solving.

Further, their capabilities extend to creating plastic enclosures for handheld printer assemblies, electronic and chemical analyzers, and wireless communication housing.

Mack Prototype, Inc

Company: mackprototype.com

Facebook page: Facebook

Services:

• Rapid prototyping
• Rapid manufacturing of urethane castings
• CNC Machining
• 3D Printing
• Injection Molding

Mack Prototype, based in Gardner, MA, is a trusted company specializing in cast urethane molding, rapid prototyping, and manufacturing for low-volume production. The company offers comprehensive in-house services, including CNC Machining, 3D Printing, Injection Molding, Finishing, Painting, and Assembly. They leverage the advantages of cast urethane molding processes such as low-cost tooling and quality delivery primarily in Laconia, New Hampshire.

Vaupell Molding and Tooling, Inc

Company: nhadec.com

Contact phone: (910) 697-7328

Services:

• Custom Contract Manufacturer Injection Molding
• CNC Machining
• 3D Printing
• Assembly
• Tooling

Vaupell Molding and Tooling, Inc. is a custom contract manufacturer offering services such as injection molding, CNC machining, 3D printing, and assembly.

The company is compliant with ITAR, ISO 9001, and ISO 13485 standards.

The products and services they provide cater to the molding, tooling, machining, and 3D printing industries.

Mold Setter Tech

Company: business.nh.gov

Contact phone: (603) 941-0022

Services:

• Tooling Design Services
• Injection Molding
• Gas Assist Molding
• Over Molding
• Secondary Finishing Services

PSI Molded Plastics is an injection molding company specializing as a Mold Setter Tech.

The firm ensures its operations are open and abides strictly to privacy laws, as indicated by its diligent accessibility and privacy policies.

Vaupell

Company: vaupell.com

Contact phone: (206) 784-9050

Services:

• Prototyping (including 3D Printing and Rapid Tooling)
• Production (with a focus on Injection Molding and CNC Machining)
• Post Production (comprising Assembly and Painting & Finishing)
• Design and Engineering Support
• Serving top tier OEMs with engineered solutions

The company, Vaupell, specializes in comprehensive prototyping and production services, including 3D printing, CNC machining, injection molding, and assembly.

Renowned for its expertise in plastics and composite engineering, it primarily delivers engineered solutions for aircraft interiors, but also serves the larger aerospace, defense, and medical markets.

With various quality certifications, it operates globally from multiple facilities located across the United States and China.

MoldPro Inc

Company: moldproinc.com

Contact phone: (603) 357-2523

Facebook page: Facebook

Services:

• Full Service Capabilities (including part design, reverse engineering, mold design, prototyping, manufacturing)
• Market Applications (including medical devices, consumer products, beauty packaging, heavy equipment)
• Custom Molding (from design to production with full services)
• Mold Making (specializing in overcoming design challenges)
• Assembly Services (such as ultrasonic welding, hot stamping, and solvent bonding)

MoldPro, Inc., an ISO 9001:2015 certified custom molder, specializes in injection molded thermoplastic solutions, offering full-service capabilities that range from plastic part design to final product assembly and packaging.

They cater to various market applications including medical devices, consumer products, and heavy equipment, providing custom molding and mold making services.

The company is recognized for developing unique ways of creating parts that were deemed non-manufacturable by other firms using injection molding.

EPTAM Precision

Company: eptam.com

Facebook page: Facebook

Services:

• Achieving manufacturing challenges.
• Providing Design for Manufacturing solutions.
• Implementing complex, scalable engineering.
• Delivering high-quality, cost-effective final products.
• Custom designing automations to improve quality and reduce costs.

EPTAM is a market-leading injection molding company with a strong commitment to producing parts that touch lives.

The company emphasizes innovation, scaling, and quality, offering solutions for Design for Manufacturing challenges and strategically aligning their goals with those of their customers.

With years of experience, EPTAM balances productivity and quality specifications with custom automation, demonstrating both ingenuity and exceptional technical expertise.

PSI Molded Plastics, Inc

Company: investor.citizensbank.com

Facebook page: Facebook

Services:

• Custom injection molding
• Merger facilitation
• Debt consolidation
• Plastic injection molding capabilities over a range of requirements
• Partnership with financial institutions for financial management and growth

PSI Molded Plastics, Inc. is an injection molding company established via the merger of GI Plastek and Precision Southeast, Inc. It operates facilities in New Hampshire, South Carolina, and Indiana, providing a comprehensive range of plastic injection molding capabilities. A $23 million credit facility from Citizens Bank facilitated the merger, helping to consolidate existing debt.

Mack Molding

Company: mack.com

Facebook page: Facebook

Services:

• Design & Development
• Prototyping
• Plastic Injection Molding
• Finishing
• Sheet Metal

The injection molding company specializes in diverse areas such as design and development, prototyping, plastic injection molding, finishing, sheet metal, and machining. They cater to several sectors including medical, industrial, transportation, energy/environment, computer & business, and consumer markets.

Holding numerous ISO certificates, operating from various locations including Arlington, VT, East Arlington, VT, Cavendish, VT, Gardner, MA, Woodbridge, CT, Inman, SC, Statesville, NC, the company actively engages in sustainable practices and community participation.

MRPC

Company: mrpcorp.com

Contact phone: (262) 781-7122

Facebook page: Facebook

Services:

• Design for Manufacturability
• Silicone Molding, Plastic Molding & Extrusions
• Multi-Material Molding
• Finished Medical Device Assembly
• Global Supply Chain Development & Management

MRPC, a provider of medical device components and assemblies, acquired Johnson Precision, a global supplier of plastic injection molded components and assemblies.

This acquisition expanded MRPC’s capabilities, introducing mold making for plastic injection tooling, an additional Class 8 clean room, and FDA-registered production of finished medical devices in partnership with a Malaysia-based joint venture.

This partnership also creates new business opportunities for MRPC in the Pacific Rim region.

Rehrig Pacific

Company: plasticsnews.com

Services:

• Custom injection molding services
• Material selection and sourcing
• Mold design and engineering
• Mold building and testing
• Post-molding assembly and packaging services

Rehrig Pacific Co., an injection molding company, has shuttered its plant in Raymond, N.H., affecting 40 employees. The firm plans to relocate the equipment and operations to another location.

Bayhead Products

Company: bayheadproducts.com

Services:

• Plastic parts manufacturing
• Quick shipping for stock material handling products
• Drop-shipping for carts, trucks, boxes, and pallet containers
• Fibre material fabrication
• Rotational molding using the “open flame” method

Bayhead, a New Hampshire-based plastic parts manufacturer, operates in a 50,000 square foot facility, specializing in the production and direct shipping of a variety of material handling products.

The company, originating as a division of Spaulding Fibre in the early 1900s which produced fibre material, has since evolved and expanded into plastic molding since the late 1950s.

Bayhead utilizes a rotational molding technique, initially using an “open flame” process, symbolizing its transition into new manufacturing territories.

The Rodon Group

Company: rodongroup.com

Facebook page: Facebook

Services:

• Custom Plastic Injection Molding
• Standard Parts Manufacturing
• High-Volume Production
• Parts Gallery Inspection
• Material Selection Assistance

The injection molding company specializes in high-volume production of complex plastic parts, using custom plastic injection molding technology.

Various materials are employed in their operations to accommodate different applications, including Acrylonitrile Butadiene Styrene (ABS), Low-Density and High-Density Polyethylene (LDPE and HDPE), Polycarbonate (PC), Polyamide (Nylon), High Impact Polystyrene (HIPS), and Polypropylene (PP).

These materials are chosen based on factors such as tensile strength, impact resistance, heat wear resistance, and chemical resistance, resulting in versatile products that find application in various industries including children’s toys, household appliances, automotive parts, medical devices, and food and beverage.

New Hampshire Plastics, Inc

Company: mark1.co

Facebook page: Facebook

Services:

• Custom roll and sheet extrusion of High Impact Polystyrene (HIPS)
• Screen printing, digital printing and fabrication services
• Offer individual formulation and engineering for offset, screen, flexo, and digital prints
• ēco-HIPS™ custom colored sheet matching services
• Provision of polycarbonate spray shields to reduce aerosolized spray and exposure.

The company specializes in the production of High Impact Polystyrene (HIPS), providing custom roll and sheet extrusion services.

Their HIPS materials are engineered for various printing methods and are available in a diverse range of sizes and thicknesses.

They also offer polycarbonate spray shields and ēco-HIPS™, a custom-colored sheet designed to save press time, ink and enhance image quality.

Recap