# List of Plastics Manufacturing companies in Ohio

Tamtam tracks 36 Plastics Manufacturing companies headquartered in Ohio. This list ranks all of them by number of employees on LinkedIn, led by Avient Corporation, Saint-Gobain Performance Plastics and PLASKOLITE. Their median headcount is 106. Half of them were founded in 1979 or later. The most common headquarters are Columbus (4) and Solon (2).

These Ohio-based companies specialize in plastics manufacturing, encompassing a range of activities from material development to finished product fabrication. The list includes established firms, many founded mid-20th century, indicating a mature industrial sector.

Key companies include Avient Corporation, which develops and supplies colorants and engineered materials; PLASKOLITE, a manufacturer of acrylic and polycarbonate sheets; Americhem, providing custom color masterbatch and functional additives; and Myers Industries, a producer of polymer products. A notable pattern is the concentration of headquarters in northeastern Ohio, particularly around the Cleveland metropolitan area.

🇺🇸 Ohio · 36 companies · Updated Nov 13, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Avient Corporation](https://www.tamtam.ai/c/avient-corporation) (avient.com)<br>Development and supply of colorants, composites, additives, engineered materials, and Dyneema® fibers for sustainable, high-performance customer products. | Plastics Manufacturing | 🇺🇸 Avon Lake | 4,204 |  |
| 2 | [Saint-Gobain Performance Plastics](https://www.tamtam.ai/c/saint-gobain-performance-plastics) (saint-gobain.com)<br>Leading producer of engineered high-performance polymer products serving diverse industries worldwide with innovation, expertise, and comprehensive customer support. | Plastics Manufacturing | 🇺🇸 Solon | 1,932 |  |
| 3 | [PLASKOLITE](https://www.tamtam.ai/c/plaskolite) (plaskolite.com)<br>Leading manufacturer of acrylic sheet, polycarbonate sheet, and other thermoplastic solutions for various applications with a focus on quality and customer service | Plastics Manufacturing | 🇺🇸 Columbus | 665 | 1950 |
| 4 | [OMNOVA](https://www.tamtam.ai/c/omnova) (omnova.com)<br>Development and supply of functional and decorative surfaces enhancing aesthetics and performance for various global brand-name end-use products. | Plastics Manufacturing | 🇺🇸 Solon | 577 | 1999 |
| 5 | [Americhem](https://www.tamtam.ai/c/americhem) (americhem.com)<br>Global manufacturer providing custom color masterbatch, functional additives, and engineered compounds through technical collaboration, laboratory testing, and on-site process simulation for polymer optimization. | Plastics Manufacturing | 🇺🇸 Cuyahoga Falls | 549 | 1941 |
| 6 | [Myers Industries](https://www.tamtam.ai/c/myers-industries) (myersindustries.com)<br>A leading manufacturer of polymer products for various markets, distributing tools and supplies for the tire industry, with a diverse product portfolio | Plastics Manufacturing | 🇺🇸 Akron | 548 | 1933 |
| 7 | [Molded Fiber Glass (MFG) Companies](https://www.tamtam.ai/c/molded-fiber-glass-mfg-companies) (moldedfiberglass.com)<br>A leading composites specialist with 70 years of experience in providing innovative solutions, material development, and manufacturing services across North America | Plastics Manufacturing | 🇺🇸 Ashtabula | 530 | 1948 |
| 8 | [Core Molding Technologies](https://www.tamtam.ai/c/core-molding-technologies) (coremt.com)<br>Specializing in molded structural products for building, utilities, transportation, and powersports industries across North America with a wide range of manufacturing processes | Plastics Manufacturing | 🇺🇸 Columbus | 449 |  |
| 9 | [Geon Performance Solutions](https://www.tamtam.ai/c/geon-performance-solutions) (geon.com)<br>Global leader in formulating, developing, and manufacturing performance polymer solutions with a portfolio of vinyl and polyolefin technologies, serving 1,200+ customers worldwide | Plastics Manufacturing | 🇺🇸 Westlake | 410 |  |
| 10 | [Advanced Composites](https://www.tamtam.ai/c/advanced-composites) (advcmp.com)<br>A leading supplier of TPOs and Polypropylene Compounds for the North American Automotive Industry, dedicated to providing innovative products and reducing costs | Plastics Manufacturing | 🇺🇸 Sidney | 369 | 1986 |
| 11 | [FMT](https://www.tamtam.ai/c/fmt) (kreate.com)<br>A strategic partner for high-quality plastic parts manufacturing, offering services including engineering, 3D printing, injection molding, and tooling solutions | Plastics Manufacturing | 🇺🇸 Findlay | 348 | 1987 |
| 12 | [Spartech Corporation](https://www.tamtam.ai/c/spartech-corporation) (avient.com)<br>Innovative polymer solutions provider offering sustainable packaging and sheet solutions for various industries, with a focus on creative design and package engineering | Plastics Manufacturing | 🇺🇸 Avon Lake | 338 |  |
| 13 | [EG Industries \| Leader in Plastic Injection Molding, Tooling, and Automation](https://www.tamtam.ai/c/eg-industries-leader-in-plastic-injection-molding-tooling-and-automation) (egindustries.com)<br>Established in 1981, the company is a Tier 1 supplier to automotive, consumer, and industrial markets, offering plastic injection molding, tooling, assembly, coatings, and decorative technology services | Plastics Manufacturing | 🇺🇸 Circleville | 315 |  |
| 14 | [Xaloy LLC](https://www.tamtam.ai/c/xaloy-llc) (xaloy.com)<br>Global leader in high-performance machinery components and equipment for the plastics industry, specializing in reducing costs and increasing productivity in injection molding and extrusion processes | Plastics Manufacturing | 🇺🇸 Austintown | 252 | 1930 |
| 15 | [Multi-Plastics, Inc.](https://www.tamtam.ai/c/multi-plastics-inc) (multi-plastics.com)<br>Global supplier of thin gauge plastic films for various industries, operating multiple distribution facilities and extrusion operations to provide quick lead times and exceptional service | Plastics Manufacturing | 🇺🇸 Lewis Center | 174 | 1979 |
| 16 | [Engineered Profiles LLC](https://www.tamtam.ai/c/engineered-profiles-llc) (engineeredprofiles.com)<br>A leading manufacturer of custom plastic profile extrusions with in-house tooling capabilities, specializing in a variety of thermoplastic materials for diverse industries | Plastics Manufacturing | 🇺🇸 Columbus | 173 | 1947 |
| 17 | [Royal Plastics, Inc.](https://www.tamtam.ai/c/royal-plastics-inc) (royalplastics.com)<br>An innovative custom injection molder with global capabilities in manufacturing complex parts, offering design, assembly, finishing, and cost reduction services | Plastics Manufacturing | 🇺🇸 Mentor | 115 | 1966 |
| 18 | [Ridge Corporation](https://www.tamtam.ai/c/ridge-corporation) (ridgecorp.com)<br>Central Ohio based engineering firm specializing in advanced composites for various industries, offering resilient lightweight materials and custom engineered solutions | Plastics Manufacturing | 🇺🇸 Pataskala | 106 | 2005 |
| 19 | [Thogus Products Company](https://www.tamtam.ai/c/thogus-products-company) (thogus.com)<br>Established family-owned plastic injection molder offering value-added manufacturing services with a customer-first focus, emphasizing lasting partnerships and manufacturing excellence with White Glove Service | Plastics Manufacturing | 🇺🇸 Avon Lake | 66 | 1950 |
| 20 | [B & B Molded Products](https://www.tamtam.ai/c/b-and-b-molded-products) (bbmolded.com)<br>This custom plastic injection molding company focuses on precision products, process improvements, and quality control for various industries | Plastics Manufacturing | 🇺🇸 Napoleon | 57 | 1993 |
| 21 | [Technoform North America](https://www.tamtam.ai/c/technoform-north-america) (technoform.com)<br>Global leader in designing, producing, and distributing high-performance insulating glass spacers and thermal struts to enhance window energy efficiency | Plastics Manufacturing | 🇺🇸 Twinsburg | 53 | 1969 |
| 22 | [Pexco Custom & Specialty Plastics](https://www.tamtam.ai/c/pexco-custom-and-specialty-plastics) (pexco.com)<br>Specializing in designing and manufacturing injection molded parts with ultra-high-performance plastics for critical applications in aerospace, defense, medical, and energy industries | Plastics Manufacturing | 🇺🇸 Cincinnati | 42 | 1970 |
| 23 | [Schnipke Precision Molding](https://www.tamtam.ai/c/schnipke-precision-molding) (schnipke.com)<br>A top manufacturer of plastic injection molded components, offering value-added solutions, high-quality products, and cost-effective manufacturing techniques to industrial and consumer markets | Plastics Manufacturing | 🇺🇸 Ottoville | 40 | 1967 |
| 24 | [Proto Plastics, Inc.](https://www.tamtam.ai/c/proto-plastics-inc) (protoplastics.com)<br>Full-service contract manufacturer specializing in custom plastic injection molding parts and assemblies for various industries, with a focus on precision and quality | Plastics Manufacturing | 🇺🇸 Tipp City | 32 | 1969 |
| 25 | [JACO Manufacturing Company](https://www.tamtam.ai/c/jaco-manufacturing-company) (jacomfg.com)<br>The company is a full-service supplier of specialized design tooling and manufacturer of small, high-quality plastic parts, including custom molded products and compression fittings | Plastics Manufacturing | 🇺🇸 Berea | 26 | 1949 |
| 26 | [Midwest Molding Inc.](https://www.tamtam.ai/c/midwest-molding-inc-plain-city) (midwest-molding.com)<br>A leading injection molding company with ISO 9001 certification, offering custom plastic parts for various industries with high precision and state-of-the-art technology | Plastics Manufacturing | 🇺🇸 Plain City | 22 | 2000 |
| 27 | [Quality Plastics LLC](https://www.tamtam.ai/c/quality-plastics-llc) (qualityplasticsllc.com)<br>Specializing in custom injection molding, assembly solutions, product development, prototyping, additive manufacturing, and 3D printing services for various industries | Plastics Manufacturing | 🇺🇸 Fredericksburg | 22 | 2012 |
| 28 | [Replex Plastics](https://www.tamtam.ai/c/replex-plastics) (replex.com)<br>Manufacturing optical plastic products for industrial customers in 14 countries, including mirrors, acrylic and polycarbonate domes for various applications Offering engineering, manufacturing, and testing services | Plastics Manufacturing | 🇺🇸 Mount Vernon | 18 | 1991 |
| 29 | [Akro-Plastics](https://www.tamtam.ai/c/akro-plastics) (rotomold.net)<br>A leading provider of high-quality rotational molded plastic products, offering customization services and support from design to distribution | Plastics Manufacturing | 🇺🇸 Kent | 17 | 1985 |
| 30 | [KLW Plastics](https://www.tamtam.ai/c/klw-plastics) (klwplastics.com)<br>The company specializes in manufacturing industrial packaging solutions that are sustainable, environmentally friendly, and meet UN standards for various industries | Plastics Manufacturing | 🇺🇸 Monroe | 13 | 2005 |
| 31 | [PRIME POLYMERS, INC.](https://www.tamtam.ai/c/prime-polymers-inc) (primepolymers.com)<br>A plastics company located in Ohio, specializing in the production and distribution of polymer products | Plastics Manufacturing | 🇺🇸 Sharon Center | 11 |  |
| 32 | [Ohio Rotational Molding, LLC](https://www.tamtam.ai/c/ohio-rotational-molding-llc)<br>Specializing in manufacturing high-quality rotationally molded plastic products, offering services such as CNC machining, finishing, assembly, 3D printing, and more in western Ohio | Plastics Manufacturing | 🇺🇸 Holgate | 10 | 2017 |
| 33 | [Extrudex Limited Partnership](https://www.tamtam.ai/c/extrudex-limited-partnership) (extrudex.net)<br>Extrudex specializes in premium thermoplastic extrusions, offering custom fabrication, finishing, and assembly services for a variety of industries | Plastics Manufacturing | 🇺🇸 Painesville | 9 | 1980 |
| 34 | [Vertex, Inc](https://www.tamtam.ai/c/vertex-inc-mogadore) (vertexseals.com)<br>A premier manufacturer of designed elastomeric seals and custom rubber extrusions, with a focus on quality, technology, and customer satisfaction | Plastics Manufacturing | 🇺🇸 Mogadore | 9 | 1992 |
| 35 | [Miles Products](https://www.tamtam.ai/c/miles-products) (milesproducts.com)<br>Custom thermoplastic molding company offering insert molding, injection molding, and structural foam molding services with a network of top manufacturing companies and ISO registered facilities | Plastics Manufacturing | 🇺🇸 Broadview Heights | 3 | 1979 |
| 36 | [Laird Plastics Columbus](https://www.tamtam.ai/c/laird-plastics-columbus) (lairdplastics.com)<br>A leading distributor of plastic sheets, rods, and films serving industries such as military, construction, aerospace, and more with a focus on honesty and continuous improvement | Plastics Manufacturing | 🇺🇸 Columbus | 3 |  |

## How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 13, 2026.

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## The same list elsewhere

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Source: https://www.tamtam.ai/l/plastics-manufacturing-companies-ohio