What Proto Plastics does

Proto Plastics, Inc. is a privately held, full-service contract manufacturer of custom plastic injection molded parts and assemblies, founded in 1969 in Tipp City, Ohio, and acquired by Thogus in 2019 as part of the Thogus Group of complementary manufacturing businesses. The company operates from a single facility at 316 Park Avenue that consolidates engineering, tooling, injection molding, finishing/assembly, and warehousing capabilities. Its product platform is organized around eight integrated capabilities: Custom Plastic Injection Molding (the core production service), Engineering Support, Material Expertise, Tooling, Transfer Tooling, Finishing and Assembly, Metal to Plastic Conversion, and Supply Chain Services. The "Manufacturing by Design" process is positioned as the unifying workflow, from material selection and part design through process optimization, functional prototyping, tooling, production, and post-production optimization. Technology stack includes state-of-the-art CAD/CAM and process control software, a Brown & Sharp Microval CMM with Quadra-Check 5000 3D software, and an OGP Optical Comparator with Smart Edge Detection for precision measurement.

The company's business model is direct B2B contract manufacturing: customers submit specifications via an online Request For Quote system, and Proto Plastics provides quote-based unit pricing tied to material, tooling, quality, and volume parameters, with open book costing. Revenue is generated through one-time tooling development, piece-part production, secondary operations, and assembly services, supplemented by professional-services-style engineering support and managed supply chain services (KanBan, blanket orders, inventory holding). GTM is sales-led, targeting medium- to high-volume, technically demanding, close-tolerance programs across diversified verticals: industrial equipment, medical devices, automotive, aerospace, electronics, telecommunications, consumer appliances, safety, and government/defense. Named enterprise customers include Honda, Medtronic, NCR, Trimble, GE, ANDRITZ, Johnson Electric, Hobart, Avon Protection, OFS, and COVIDIEN. The company holds ISO 9001:2015 certification (valid through December 20, 2028) and reports customer satisfaction scores of 4.6/5 or higher, with more than half of customers in 10+ year relationships. Leadership comprises President Tom Gagnon and Marketing Director Jamie Dewing.

Name

Proto Plastics

Legal name

Proto Plastics, Inc.

Website

https://protoplastics.com

Company type

Private

Founded year

1969

Operating status

Operating

Headcount range

11–50 employees

Short description

Proto Plastics is a Tipp City, Ohio-based custom plastic injection molding contract manufacturer, founded in 1969 and a Thogus Family Company since 2019, serving 80+ manufacturers with technically demanding, close-tolerance parts across medical, aerospace, automotive, industrial, and electronics verticals.

Ownership category

akta.pro rank

Product category

Plastic Injection Molding Services

NAICS

Plastics Product Manufacturing (3261), All Other Plastics Product Manufacturing (326199), Other Plastics Product Manufacturing (32619)

SIC

Plastics Products, Nec (3089), Miscellaneous Plastics Products (3080)

akta.pro primary industry

Custom Injection Molding & Contract Manufacturing (Job Shops/CMs) (IMANAFAJ)

Keywords

• Plastic injection molding
• Contract manufacturing
• Custom molded parts
• Tooling services
• Metal to plastic conversion

Headquarters

HQ city

Tipp City

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Supply Chain, Infrastructure

Revenue model

1. Custom Plastic Injection Molding Services: Contract manufacturing services for custom plastic injection molded parts and assemblies, specializing in technically demanding, close tolerance parts. Revenue generated through tooling development, piece part production, secondary operations, and assembly services.
2. Engineering and Design Services: Design for manufacturability support, material selection consultation, process optimization, and prototype tooling services bundled with production contracts
3. Tooling Services: Custom tooling design and build, transfer tooling programs, and tooling maintenance services
4. Supply Chain Services: Inventory management, vendor relationship management, and supply chain risk mitigation services including holding finished goods and raw materials inventory

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels7 records

Core offering

Proto Plastics is a full-service contract manufacturer of custom plastic injection molded parts and assemblies, specializing in technically demanding, close tolerance parts. The company operates eight integrated capabilities built around its Manufacturing by Design process: Custom Plastic Injection Molding as the core production service, supported by Engineering Support, Material Expertise, Tooling, Transfer Tooling, Finishing and Assembly, Metal to Plastic Conversion, and Supply Chain Services. Services are delivered from a single Tipp City, Ohio facility that combines engineering, tooling, molding, assembly, and warehousing operations.

Product overview

Proto Plastics is a full-service contract manufacturer of custom plastic injection molded parts and assemblies, founded in 1969 and acquired by Thogus in 2019. The company operates as a unified service offering built around its Manufacturing by Design process, combining eight integrated capabilities: Custom Plastic Injection Molding as the core production service, supported by Engineering Support, Material Expertise, Tooling, Transfer Tooling, Finishing and Assembly, Metal to Plastic Conversion, and Supply Chain Services. These services work together to provide turnkey solutions from initial design through post-production optimization.

Differentiator

Problem solved

Functional benefit

Products and services

• Custom Plastic Injection Molding Custom plastic injection molding services for medium- to high-volume production programs, using the Manufacturing by Design process from material selection through production. Delivered to manufacturers requiring technically demanding, close tolerance plastic parts.
• Engineering Support
• Material Expertise Consultative material selection services for commodity and engineered resins, including custom resin formulations for specialized needs such as radiation shielding or vibration reduction. Aimed at manufacturers selecting thermoplastic materials for demanding applications.
• Tooling Custom injection mold design and build services, collaborating with customers and tooling vendors to ensure tools meet project requirements for the life of the program. Serves manufacturers requiring new molds for plastic part production.
• Transfer Tooling Expert tooling transfer services to smoothly transition existing molds from other facilities to Proto Plastics, including an 8-step transition process. Targets manufacturers seeking a new production partner for an existing mold.
• Finishing and Assembly Secondary operations including annealing, moisture conditioning, ultrasonic welding, mechanical assembly, painting, pad printing, plating, and kitting services. Serves manufacturers requiring value-added post-mold processing and sub-assembly.
• Metal to Plastic Conversion Engineering assistance to convert metal parts to injection molded plastics for weight, cost, and performance benefits, including material selection and design optimization. Targets OEMs looking to reduce part cost; documented to deliver 10X cost reduction in a printing industry case.
• Supply Chain Services Inventory management, vendor relationship management, and supply chain risk mitigation including KanBan, blanket orders, spot buys, and storage. Storage fees of $100/month per pallet apply after a 12-month free storage period. Serves manufacturers needing finished goods and raw materials inventory support.

Quantifiable outcome

• 10X cost reduction achieved on metal-to-plastic conversion for printing industry OEM (stainless steel to thermoplastic)
• +3 more outcomes

Named customers12 records

Segments6 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Nine partnerships are on record, tiered core and minor.

• ThoguscoreStrategic or Co-development PartnerProto Plastics is a Thogus Family Company, acquired in 2019 as part of Thogus Group of complementary businesses including rp+m (additive manufacturing), JALEX Medical, and others serving clients from consumer products to military aircraft.
• SPI (Society of the Plastics Industry)minorOthersIndustry association for plastics professionals providing industry information and news
• SPE (Society of Plastics Engineers)minorOthersProfessional society for plastics engineers providing industry resources and networking
• ISO (International Organization for Standardization)coreOthersISO-9001:2015 certified Quality Management System demonstrating commitment to quality standards
• UL (Underwriters Laboratories)minorOthersSafety standards organization referenced for product design requirements
• FDA (Food and Drug Administration)minorOthersRegulatory body for medical device and food-related plastic component compliance
• NSF InternationalminorOthersPublic health and safety organization for product standards and certification
• ASTM InternationalminorOthersStandards organization for materials, products, systems, and services
• ANSI (American National Standards Institute)minorOthersStandards body for procedures and quality standards including ANSI Y14.5 (GD&T)

Scale indicators6 records

Recent moves5 records

Expansion highlights4 records

Direct peers

• Mack Molding: Custom injection molder and contract manufacturer based in Arlington, VT serving medical, industrial, and consumer markets with engineering, tooling, molding, and assembly capabilities similar to Proto Plastics.
• Thogus: Parent company and fellow custom injection molding and contract manufacturer headquartered in Avon Lake, Ohio. Directly comparable as a multi-capability plastics contract manufacturer serving medical, defense, and consumer end markets.
• Stack Plastics: Custom injection molding and contract manufacturer in Clinton, MA serving medical, aerospace, and industrial markets. Comparable in scale and high-precision, regulated end-market focus.
• Rodon Group: Custom plastic injection molder in Hatfield, PA with in-house tooling, manufacturing-by-design philosophy, and broad capability set including metal-to-plastic conversion—very similar positioning to Proto Plastics.
• Tessy Plastics: Mid-sized custom injection molder headquartered in Skaneateles, NY serving medical, automotive, and consumer products. Directly comparable in scale, contract manufacturing model, and regulated end-market exposure.
• Batesville Products: Custom plastic injection molding and contract manufacturer based in Lawrenceburg, Indiana serving industrial, automotive, and consumer markets. Geographic and capability overlap with Proto Plastics.
• Hoffer Plastics: Custom injection molder in South Elgin, IL with manufacturing-by-design approach serving automotive, medical, and consumer markets. Directly comparable in service model and end-market mix.
• Molded Devices Inc. Custom injection molder specializing in small precision parts for medical, aerospace, and electronics. Comparable in precision molding focus and regulated end markets.
• Plastic Molded Concepts: Custom injection molder in Eagle, WI offering design, tooling, molding, and assembly services. Comparable mid-market contract manufacturer serving similar industrial customer base.

Broad incumbents

• Evco Plastics: Larger custom injection molding and contract manufacturer with multiple US and Mexico facilities. Serves similar end markets with broader geographic reach and scale—poses a competitive ceiling for mid-sized peers like Proto Plastics.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/protoplastics
• YouTubeyoutube.com/channel/UCFBZ-UNr9eUgFsP7Ww52_gg
• Facebookfacebook.com/protoplastics
• LinkedInlinkedin.com/company/proto-plastics-inc-?trk=biz-companies-cym

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Proto Plastics