# List of Plastics Manufacturing companies in the United States

Tamtam tracks 410 Plastics Manufacturing companies headquartered in the United States. This list ranks the 100 largest by number of employees on LinkedIn, led by Berry Global, Inc., Avient Corporation and Plastipak. Their median headcount is 512. Half of them were founded in 1967 or later. The most common headquarters are Houston (4), Charlotte (3) and St. Louis (3).

These US-based companies specialize in plastics manufacturing, covering a range of products from packaging to specialized components. The list includes large firms such as Berry Global, a global packaging company, and Avient Corporation, which develops colorants and composites. Also present are Plastipak, a leader in rigid plastic containers, and Formosa Plastics Corporation, U.S.A., a supplier of plastic resins.

The companies on this list are predominantly large and well-established, with several founded in the 1960s and 1970s. This suggests a mature industry with significant players. A notable pattern is the geographical distribution, with headquarters spread across various states, indicating a diffuse presence rather than a concentrated hub.

🇺🇸 United States · 100 companies · Updated Nov 13, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Berry Global, Inc.](https://www.tamtam.ai/c/berry-global-inc) (berryglobal.com)<br>A global packaging company offering innovative solutions for customers worldwide, with a focus on sustainability and the circular economy | Plastics Manufacturing | 🇺🇸 Evansville | 10,890 | 1967 |
| 2 | [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 |  |
| 3 | [Plastipak](https://www.tamtam.ai/c/plastipak) (plastipak.com)<br>A global leader in designing and manufacturing high-quality rigid plastic containers for various industries worldwide, with a focus on innovation and sustainability | Plastics Manufacturing | 🇺🇸 Plymouth | 3,534 | 1967 |
| 4 | [Formosa Plastics Corporation, U.S.A.](https://www.tamtam.ai/c/formosa-plastics-corporation-u-s-a) (fpcusa.com)<br>A vertically-integrated supplier of plastic resins and petrochemicals, with over 20 production units across five business units | Plastics Manufacturing | 🇺🇸 Livingston Township | 2,480 | 1978 |
| 5 | [Amazon Flex](https://www.tamtam.ai/c/amazon-flex) (ind.br)<br>A plastics company based in Castanhal, Brazil, specializing in manufacturing and distributing plastic products and solutions | Plastics Manufacturing | 🇺🇸 Castanhal | 2,401 |  |
| 6 | [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 |  |
| 7 | [Ampacet Corporation](https://www.tamtam.ai/c/ampacet-corporation) (ampacet.com)<br>Global leader manufacturing custom color, special effect, black, white, and specialty additive masterbatches for diverse industries including food, beverage, cosmetics, agriculture, and automotive. | Plastics Manufacturing | 🇺🇸 Tarrytown | 1,448 | 1937 |
| 8 | [RESRG Automotive](https://www.tamtam.ai/c/resrg-automotive) (resrgautomotive.com)<br>Manufacture coated exterior systems and components for leading automotive manufacturers with extensive global production and skilled workforce. | Plastics Manufacturing | 🇺🇸 | 1,409 | 1948 |
| 9 | [Silgan Plastics](https://www.tamtam.ai/c/silgan-plastics) (silganplastics.com)<br>Silgan Plastics offers innovative and customized packaging solutions, from design to production, to help clients achieve packaging success | Plastics Manufacturing | 🇺🇸 Chesterfield | 1,397 | 1987 |
| 10 | [Zeus](https://www.tamtam.ai/c/zeus-orangeburg) (zeusinc.com)<br>Specializing in polymer extrusion and catheter design, this global company partners with various industries to deliver innovative solutions and enhance lives worldwide | Plastics Manufacturing | 🇺🇸 Orangeburg | 1,381 | 1966 |
| 11 | [Inteplast Group](https://www.tamtam.ai/c/inteplast-group) (inteplast.com)<br>A leading manufacturer of integrated plastics in North America, offering a wide range of quality products across various divisions | Plastics Manufacturing | 🇺🇸 Livingston | 1,224 | 1991 |
| 12 | [Teknor Apex Company](https://www.tamtam.ai/c/teknor-apex-company) (teknorapex.com)<br>Engineering and delivering custom high-performance material solutions across multiple industries with global operations and a collaborative, innovative team culture. | Plastics Manufacturing | 🇺🇸 Pawtucket | 1,208 | 1924 |
| 13 | [Technimark LLC](https://www.tamtam.ai/c/technimark-llc) (technimark.com)<br>A global leader in high-value injection-molded packaging and components for consumer packaging, healthcare, and industrial markets, providing innovative custom plastic solutions | Plastics Manufacturing | 🇺🇸 Asheboro | 1,187 | 1983 |
| 14 | [Poly-America, LP](https://www.tamtam.ai/c/poly-america-lp) (poly-america.com)<br>A leading producer of polyethylene products including construction film, trash bags, geomembrane liners, and a top polyethylene recycler and compounder | Plastics Manufacturing | 🇺🇸 Grand Prairie | 1,072 | 1976 |
| 15 | [Vinmar International](https://www.tamtam.ai/c/vinmar-international) (vinmar.com)<br>A global company offering tailored business solutions in marketing, distribution, and project development for producers and users of plastics and chemicals worldwide | Plastics Manufacturing | 🇺🇸 Houston | 1,042 | 1978 |
| 16 | [Plastic Molding Manufacturing](https://www.tamtam.ai/c/plastic-molding-manufacturing) (plasticmoldingmfg.com)<br>Since 1968, we provide innovative multi-material products with local manufacturing solutions Offering injection molding, two-shot molding, and various secondary services | Plastics Manufacturing | 🇺🇸 Hudson | 1,025 | 1968 |
| 17 | [Bemis Manufacturing Company](https://www.tamtam.ai/c/bemis-manufacturing-company) (bemismfg.com)<br>Manufacturing custom plastic products including toilet seats, healthcare components, and precision parts for consumer, commercial, medical, and industrial markets worldwide. | Plastics Manufacturing | 🇺🇸 Sheboygan Falls | 919 | 1901 |
| 18 | [A. Schulman, Inc.](https://www.tamtam.ai/c/a-schulman-inc) (lyondellbasell.com)<br>production of plastics, chemicals, and refining products used in packaging, water pipes, automotive, electronics, and appliance industries worldwide. | Plastics Manufacturing | 🇺🇸 Houston | 840 | 1928 |
| 19 | [MGS Mfg. Group](https://www.tamtam.ai/c/mgs-mfg-group) (mgsmfg.com)<br>Global provider of healthcare manufacturing solutions with vertically integrated capabilities from design to assembly, creating breakthrough innovations for Pharma, Diagnostic, and MedTech companies | Plastics Manufacturing | 🇺🇸 Germantown | 813 | 1982 |
| 20 | [HellermannTyton North America](https://www.tamtam.ai/c/hellermanntyton-north-america) (hellermanntyton.us)<br>A global leader in cable management and protection products and identification systems across various industries, with a focus on innovative solutions and customer satisfaction | Plastics Manufacturing | 🇺🇸 Milwaukee | 781 | 1969 |
| 21 | [WHS Plastics LTD](https://www.tamtam.ai/c/whs-plastics-ltd) (whs-plastics.com)<br>Global manufacturer of injection mouldings and metal pressings for automotive, electronics, packaging, and industrial markets Offers design, assembly, material guidance, and tool manufacturing services | Plastics Manufacturing | 🇺🇸 Minworth | 765 | 1933 |
| 22 | [RTP Company](https://www.tamtam.ai/c/rtp-company) (rtpcompany.com)<br>Global manufacturer specializing in custom engineered thermoplastic compounds with diverse resin systems for color, conductivity, flame retardancy, and durability applications. | Plastics Manufacturing | 🇺🇸 Winona | 750 | 1982 |
| 23 | [Lacks Enterprises](https://www.tamtam.ai/c/lacks-enterprises) (lacksenterprises.com)<br>A family-owned manufacturer of innovative and high-quality automobile parts, known for its detail-focused drive and global industry experience since 1961 | Plastics Manufacturing | 🇺🇸 Kentwood | 735 | 1961 |
| 24 | [Brentwood Industries, Inc.](https://www.tamtam.ai/c/brentwood-industries-inc) (brentwoodindustries.com)<br>A leading provider of thermoformed plastic solutions for consumer, manufacturing, and environmental industries, specializing in custom products and innovative strategies | Plastics Manufacturing | 🇺🇸 Reading | 733 | 1965 |
| 25 | [INOAC USA, Inc.](https://www.tamtam.ai/c/inoac-usa-inc) (inoacusa.com)<br>INOAC is a leading innovator in polyurethane technology, offering materials for various industries and partnering with companies to differentiate their brands | Plastics Manufacturing | 🇺🇸 Troy | 718 | 1926 |
| 26 | [Flexcon](https://www.tamtam.ai/c/flexcon) (flexcon.com)<br>A family-owned provider of innovative coatings, film laminations, and functional technologies, focused on creating sustainable solutions for a variety of markets globally | Plastics Manufacturing | 🇺🇸 Spencer | 695 | 1956 |
| 27 | [Polymershapes](https://www.tamtam.ai/c/polymershapes) (polymershapes.com)<br>A leading distributor of plastic products with extensive services and solutions including same-day delivery, expert capabilities, innovative solutions, and knowledgeable customer service team | Plastics Manufacturing | 🇺🇸 Charlotte | 669 |  |
| 28 | [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 |
| 29 | [JM Eagle](https://www.tamtam.ai/c/jm-eagle) (jmeagle.com)<br>A leading manufacturer of high-grade PVC and HDPE pipes for various industries worldwide, committed to innovation, superior customer service, and environmental sustainability | Plastics Manufacturing | 🇺🇸 Los Angeles | 644 | 1982 |
| 30 | [EVCO Plastics](https://www.tamtam.ai/c/evco-plastics) (evcoplastics.com)<br>Innovative plastic injection molding company with global presence, offering precision molding, large part molding, custom design, and mold building services | Plastics Manufacturing | 🇺🇸 Deforest | 637 | 1964 |
| 31 | [ISCO Industries, Inc.](https://www.tamtam.ai/c/isco-industries-inc) (isco-pipe.com)<br>Global provider of customized high-density polyethylene piping solutions for various industries, offering fabrication, design support, technical services, and equipment sales and rentals | Plastics Manufacturing | 🇺🇸 Louisville | 636 | 1962 |
| 32 | [UPG](https://www.tamtam.ai/c/upg) (upgintl.com)<br>A US-based manufacturer specializing in OEM, contract manufacturing, and injection molding for data centers, automotive, and general industrial markets worldwide | Plastics Manufacturing | 🇺🇸 Houston | 625 | 1954 |
| 33 | [Royal Technologies Corp.](https://www.tamtam.ai/c/royal-technologies-corp) (royaltechnologies.com)<br>Advanced engineering and manufacturing company providing innovative plastic solutions to industries including automotive, furniture, and consumer products Trusted by customers for reliable service | Plastics Manufacturing | 🇺🇸 Hudsonville | 614 | 1987 |
| 34 | [Comar](https://www.tamtam.ai/c/comar) (comar.com)<br>Provides industry-leading plastic packaging solutions for various markets, from beauty to healthcare, leveraging advanced technologies and integrated manufacturing processes for product commercialization. | Plastics Manufacturing | 🇺🇸 Voorhees | 614 | 1949 |
| 35 | [Rubbermaid Commercial Products](https://www.tamtam.ai/c/rubbermaid-commercial-products) (rubbermaidcommercial.com)<br>Manufacturer of innovative products for commercial and institutional markets worldwide, specializing in food services, sanitary maintenance, waste handling, material transport, and safety solutions | Plastics Manufacturing | 🇺🇸 Huntersville | 606 | 1968 |
| 36 | [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 |
| 37 | [Primex](https://www.tamtam.ai/c/primex) (primexplastics.com)<br>An international leader in extruded plastics, Primex offers custom sheet extrusion, colorants, compounds, additives, design, and fabrication services for various industries | Plastics Manufacturing | 🇺🇸 Richmond | 558 | 1965 |
| 38 | [Jones Plastic and Engineering](https://www.tamtam.ai/c/jones-plastic-and-engineering) (jonesplastic.com)<br>Specializes in advanced plastic molding techniques with multiple facilities in the US and Mexico to reduce costs and speed delivery. | Plastics Manufacturing | 🇺🇸 Louisville | 557 | 1961 |
| 39 | [Tessy Plastics Corp.](https://www.tamtam.ai/c/tessy-plastics-corp) (tessy.com)<br>Plastic molder, custom automated assembly solutions across medical, pharmaceutical, diagnostics, and consumer healthcare markets. Capabilities include product design and rapid prototyping. | Plastics Manufacturing | 🇺🇸 Skaneateles | 556 | 1973 |
| 40 | [Flambeau, Inc.](https://www.tamtam.ai/c/flambeau-inc) (flambeau.com)<br>The company specializes in manufacturing a diverse range of plastic products, offering design assistance, tooling, contract manufacturing, and various retail divisions worldwide | Plastics Manufacturing | 🇺🇸 Baraboo | 553 | 1947 |
| 41 | [Porex](https://www.tamtam.ai/c/porex) (porex.com)<br>A global leader in porous materials manufacturing, specializing in innovative solutions for healthcare, consumer, and industrial markets worldwide Trusted by over 1,300 customers in 65 countries | Plastics Manufacturing | 🇺🇸 Fairburn | 550 |  |
| 42 | [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 |
| 43 | [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 |
| 44 | [Ring Container Technologies](https://www.tamtam.ai/c/ring-container-technologies) (ringcontainer.com)<br>Industry leader in PET and HDPE plastic packaging, creating durable, practical containers through innovation and collaboration with customers for superior consumer product packaging | Plastics Manufacturing | 🇺🇸 Oakland | 544 | 1968 |
| 45 | [Mack Molding Company](https://www.tamtam.ai/c/mack-molding-company) (mack.com)<br>A Vermont-based company providing design, FDA-approved manufacturing services for medical, commercial, computer, energy, and transportation markets with expertise in injection molding and fabrication | Plastics Manufacturing | 🇺🇸 Arlington | 536 | 1920 |
| 46 | [Daramic, LLC](https://www.tamtam.ai/c/daramic-llc) (daramic.com)<br>Global supplier of high performance polyethylene battery separators for lead acid batteries with manufacturing and innovation centers worldwide. | Plastics Manufacturing | 🇺🇸 Charlotte | 535 |  |
| 47 | [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 |
| 48 | [Ensambles Hyson](https://www.tamtam.ai/c/ensambles-hyson) (facebook.com)<br>A global manufacturing leader specializing in high-quality plastics and electronics products with a focus on innovation, sustainability, and employee development | Plastics Manufacturing | 🇺🇸 Tijuana | 521 | 1989 |
| 49 | [Prent Corporation](https://www.tamtam.ai/c/prent-corporation) (prent.com)<br>Global leader in designing and manufacturing custom plastic, rigid thermoform packaging for medical, electronics, and consumer industries with worldwide manufacturing facilities | Plastics Manufacturing | 🇺🇸 Janesville | 520 | 1967 |
| 50 | [Plastic Products Company Inc](https://www.tamtam.ai/c/plastic-products-company-inc) (plasticproductsco.com)<br>A one-stop outsourcing service for custom plastic, metal, and ceramic injection molding with a focus on design, manufacturing, and distribution Award-winning with over 50 years of experience | Plastics Manufacturing | 🇺🇸 Lindstrom | 512 | 1962 |
| 51 | [The Plastek Group](https://www.tamtam.ai/c/the-plastek-group) (plastekgroup.com)<br>A world-class manufacturer specializing in plastics packaging for various industries, providing services from design and development to molding, assembly, and decorating | Plastics Manufacturing | 🇺🇸 Erie | 505 | 1956 |
| 52 | [Nexeo Plastics](https://www.tamtam.ai/c/nexeo-plastics) (nexeoplastics.com)<br>Global thermoplastic resins distributor offering quality products, sustainable options, technical support, and value-added services across various industries worldwide | Plastics Manufacturing | 🇺🇸 The Woodlands | 495 | 1973 |
| 53 | [Revere Plastics Systems, LLC](https://www.tamtam.ai/c/revere-plastics-systems-llc) (revereplasticssystems.com)<br>A Michigan-based company with 50 years of experience in plastics manufacturing, offering innovative solutions in design, injection molding, assembly, and testing | Plastics Manufacturing | 🇺🇸 Novi | 489 | 1957 |
| 54 | [CPC - Colder Products Company](https://www.tamtam.ai/c/cpc-colder-products-company) (cpcworldwide.com)<br>provider of quick disconnect couplings and connectors for medical, bioprocessing, industrial, and chemical handling applications ensuring safety and usability | Plastics Manufacturing | 🇺🇸 Arden Hills | 485 | 1978 |
| 55 | [Westlake Pipe & Fittings](https://www.tamtam.ai/c/westlake-pipe-and-fittings) (westlakepipe.com)<br>A leading PVC pipe manufacturer in North America, producing gasketed, solvent welded, and restrained joint pipes for various markets with superior customer service | Plastics Manufacturing | 🇺🇸 Houston | 482 | 1992 |
| 56 | [Laird Plastics](https://www.tamtam.ai/c/laird-plastics) (lairdplastics.com)<br>A leading distributor of plastic sheets, rods, and films with a wide range of products for various industries across North America | Plastics Manufacturing | 🇺🇸 Irving | 474 | 1981 |
| 57 | [Wilbert Plastic Services](https://www.tamtam.ai/c/wilbert-plastic-services) (wilbertplasticservices.com)<br>A leading custom thermoforming and injection-molding company with 50+ years of experience, offering innovative processes to bring products to market faster | Plastics Manufacturing | 🇺🇸 Belmont | 470 | 1965 |
| 58 | [Airlite Plastics Co.](https://www.tamtam.ai/c/airlite-plastics-co) (airliteplastics.com)<br>A family-owned manufacturer in Omaha, NE since 1946, specializing in a variety of custom plastic products for food, construction, and more | Plastics Manufacturing | 🇺🇸 Omaha | 466 | 1946 |
| 59 | [Cascade Engineering](https://www.tamtam.ai/c/cascade-engineering) (cascadeng.com)<br>Manufacturer and marketer with expertise in large part injection molding Offers products and consulting services across various industries, prioritizing sustainability and innovation | Plastics Manufacturing | 🇺🇸 Grand Rapids | 466 | 1973 |
| 60 | [igus Inc.](https://www.tamtam.ai/c/igus-inc) (igus.com)<br>Family-owned company creating innovative motion plastics solutions for 60 years, with a focus on cable carriers, bearings, and guides Fast, reliable service and technical support available | Plastics Manufacturing | 🇺🇸 Rumford | 457 | 1985 |
| 61 | [Pexco](https://www.tamtam.ai/c/pexco) (pexco.com)<br>A leading North American manufacturer of specialty plastic products providing design, engineering, and fabrication services for various market applications ISO certified | Plastics Manufacturing | 🇺🇸 Alpharetta | 450 |  |
| 62 | [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 |  |
| 63 | [AMAZONFRESH LLC](https://www.tamtam.ai/c/amazonfresh-llc) (amazonfresh.com)<br>Online retailer offering a diverse selection of products available for purchase through AmazonFresh, catering to various shopping needs | Plastics Manufacturing | 🇺🇸 Bellevue | 432 | 2017 |
| 64 | [Revolution Sustainable Solutions, LLC](https://www.tamtam.ai/c/revolution-sustainable-solutions-llc) (revolutioncompany.com)<br>This company offers sustainable loop plastic solutions to empower businesses and consumers to contribute to a better future | Plastics Manufacturing | 🇺🇸 Little Rock | 425 | 1996 |
| 65 | [Century Mold Co. Inc.](https://www.tamtam.ai/c/century-mold-co-inc) (centurymold.com)<br>A leading plastic injection molder specializing in automotive parts, with multiple facilities across USA and Mexico, offering comprehensive molding capabilities and in-house mold design | Plastics Manufacturing | 🇺🇸 Rochester | 421 | 1978 |
| 66 | [Toray Plastics (America), Inc.](https://www.tamtam.ai/c/toray-plastics-america-inc) (toraytpa.com)<br>Innovative company producing specialty films and foam materials in Rhode Island and Virginia, focused on sustainability and global market leadership | Plastics Manufacturing | 🇺🇸 North Kingstown | 420 | 1985 |
| 67 | [Montaplast of North America](https://www.tamtam.ai/c/montaplast-of-north-america) (montaplast.com)<br>A family business with over 60 years of experience producing plastic precision parts for automotive industry and household appliances globally | Plastics Manufacturing | 🇺🇸 Frankfort | 418 |  |
| 68 | [American Plastics](https://www.tamtam.ai/c/american-plastics) (americanplasticsllc.com)<br>Manufacturer of injection molded storage solutions including resin shelving, tool boxes, and cleaning products for household and garage organization via national retailers. | Plastics Manufacturing | 🇺🇸 St. Louis | 417 | 1964 |
| 69 | [Alpha Packaging](https://www.tamtam.ai/c/alpha-packaging) (alphap.com)<br>Manufacturer of plastic bottles and jars for various industries worldwide, offering stock and custom PET and HDPE containers in sizes up to 1 gallon | Plastics Manufacturing | 🇺🇸 St. Louis | 411 | 1969 |
| 70 | [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 |  |
| 71 | [Spartech LLC](https://www.tamtam.ai/c/spartech-llc) (spartech.com)<br>Develops custom engineered plastic sheet and rollstock solutions for diverse industries, offering various materials, specializing in thermoforming, medical, military, and packaging applications. | Plastics Manufacturing | 🇺🇸 St. Louis | 407 | 1960 |
| 72 | [Penn Color, Inc.](https://www.tamtam.ai/c/penn-color-inc) (penncolor.com)<br>Global developer and manufacturer of color concentrates, masterbatches, additives, and pigment dispersions for various industries with a focus on innovation and customer satisfaction | Plastics Manufacturing | 🇺🇸 Hatfield | 401 | 1964 |
| 73 | [Tredegar Corporation](https://www.tamtam.ai/c/tredegar-corporation) (tredegar.com)<br>A global manufacturer of plastic films and aluminum extrusions for various industries worldwide, with sales approaching $826 million in 2021 | Plastics Manufacturing | 🇺🇸 Richmond | 388 | 1989 |
| 74 | [Westfall Technik, LLC](https://www.tamtam.ai/c/westfall-technik-llc) (westfall-technik.com)<br>Provides integrated manufacturing solutions, from design and prototyping to molding, assembly, and logistics for Healthcare and Consumer Packaging OEMs, globally. | Plastics Manufacturing | 🇺🇸 Tempe | 380 | 2017 |
| 75 | [Plastikon Industries Inc](https://www.tamtam.ai/c/plastikon-industries-inc) (plastikon.com)<br>A world-leading plastic and contract manufacturer servicing various industries with award-winning services, global facilities, Toyota principles, and MBE certification | Plastics Manufacturing | 🇺🇸 Hayward | 377 |  |
| 76 | [CANTEX Inc](https://www.tamtam.ai/c/cantex-inc) (cantexinc.com)<br>A nationwide manufacturer of American-made nonmetallic electrical products including conduit, fittings, duct, and switch boxes for various applications | Plastics Manufacturing | 🇺🇸 Fort Worth | 375 |  |
| 77 | [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 |
| 78 | [Ravago Americas](https://www.tamtam.ai/c/ravago-americas) (ravago.com)<br>Global manufacturer and distributor of plastics, rubber, and chemicals with over 50 years of experience, serving a wide range of industrial players worldwide | Plastics Manufacturing | 🇺🇸 Orlando | 362 | 1961 |
| 79 | [Plastico](https://www.tamtam.ai/c/plastico) (indelco.com)<br>Industrial plastic solutions distributor since 1970, providing fluid handling equipment, engineering plastics, and custom fabrication of specialized equipment like pump boxes and filter chambers | Plastics Manufacturing | 🇺🇸 Memphis | 359 | 1970 |
| 80 | [Nolato Vermont](https://www.tamtam.ai/c/nolato-vermont) (nolato.com)<br>A global leader in plastic injection molding and contract manufacturing for healthcare, automotive, and filtration industries, offering advanced engineering services worldwide | Plastics Manufacturing | 🇺🇸 Bethel | 353 | 1955 |
| 81 | [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 |
| 82 | [Celgard](https://www.tamtam.ai/c/celgard) (celgard.com)<br>A reputable supplier of lithium battery materials, excelling in product performance, supply reliability, technical solutions, and global business support | Plastics Manufacturing | 🇺🇸 Charlotte | 348 |  |
| 83 | [DME Company](https://www.tamtam.ai/c/dme-company) (dme.net)<br>Global supplier of mold technologies and equipment supplies, offering expertise, logistics, and support for customers worldwide to achieve success in mold making and molding processes | Plastics Manufacturing | 🇺🇸 Madison Heights | 341 | 1942 |
| 84 | [Colortech Inc.](https://www.tamtam.ai/c/colortech-inc) (colortech.com)<br>A manufacturer of color and additive concentrates for the plastics industry, offering standard and custom solutions for various applications globally | Plastics Manufacturing | 🇺🇸 Morristown | 339 | 1981 |
| 85 | [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 |  |
| 86 | [Techmer PM](https://www.tamtam.ai/c/techmer-pm) (techmerpm.com)<br>A leading materials design company collaborating with plastics industry to solve business challenges, enhance product properties, and promote sustainability through custom solutions and technology | Plastics Manufacturing | 🇺🇸 Clinton | 336 | 1981 |
| 87 | [KI Industries, Inc.](https://www.tamtam.ai/c/ki-industries-inc) (kiindustries.com)<br>Design manufacture decorative plastic die cast components for automotive and appliance industries with focus on aesthetics quality and customer service. | Plastics Manufacturing | 🇺🇸 Berkeley | 335 | 1964 |
| 88 | [Alphagary, an Orbia business](https://www.tamtam.ai/c/alphagary-an-orbia-business) (alphagary.com)<br>A global leader in specialty polymer compounds and additives, offering sustainable solutions for various industries worldwide through innovative formulations and global distribution | Plastics Manufacturing | 🇺🇸 Boston | 331 | 1961 |
| 89 | [Washington Penn](https://www.tamtam.ai/c/washington-penn) (washingtonpenn.com)<br>A global provider of innovative polypropylene and polyethylene compounds, specializing in custom solutions for various markets with top-quality products and service | Plastics Manufacturing | 🇺🇸 Washington | 323 |  |
| 90 | [Synventive by SPECTRIX](https://www.tamtam.ai/c/synventive-by-spectrix) (synventive.com)<br>Global leader in manufacturing hot runner systems & components for injection molding Offers complete solutions with high quality products & services worldwide | Plastics Manufacturing | 🇺🇸 Peabody | 321 |  |
| 91 | [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 |  |
| 92 | [PCS Company](https://www.tamtam.ai/c/pcs-company) (pcs-company.com)<br>A leading supplier of mold bases, components, and hot runner products for plastic and die cast industries, emphasizing quality, innovation, and customer service | Plastics Manufacturing | 🇺🇸 Fraser | 311 | 1960 |
| 93 | [Precision Concepts International LLC](https://www.tamtam.ai/c/precision-concepts-international-llc) (pcinternational.com)<br>Global provider of manufacturing and packaging solutions for healthcare and consumer industries Specializing in custom components, sub-assemblies, and sterile medical devices | Plastics Manufacturing | 🇺🇸 Huntersville | 307 | 2003 |
| 94 | [Arlon Graphics](https://www.tamtam.ai/c/arlon-graphics) (arlon.com)<br>Manufacturing high-quality cast vinyl graphic films for various markets worldwide, providing innovative material solutions for visual expression through distribution partners and customer-centric operations | Plastics Manufacturing | 🇺🇸 Placentia | 302 | 1958 |
| 95 | [Prinsco, Inc.](https://www.tamtam.ai/c/prinsco-inc) (prinsco.com)<br>A family-owned company in the water management industry, manufacturing plastic pipes and products to collect, convey, treat, and store water underground | Plastics Manufacturing | 🇺🇸 Willmar | 299 | 1975 |
| 96 | [Standex Engraving](https://www.tamtam.ai/c/standex-engraving) (mold-tech.com)<br>Global supplier specializing in mold texturing, surface finishes, and tooling for manufacturing products; part of a diversified global manufacturing corporation | Plastics Manufacturing | 🇺🇸 Salem | 296 | 1955 |
| 97 | [Republic Plastics](https://www.tamtam.ai/c/republic-plastics) (republicplastics.com)<br>Manufacturer of premium private label foam products for consumer-retail and institutional-foodservice markets, offering innovative turnkey services with quick product introduction capabilities | Plastics Manufacturing | 🇺🇸 McQueeney | 295 | 1999 |
| 98 | [ILPEA Industries, Inc.](https://www.tamtam.ai/c/ilpea-industries-inc) (ilpeaindustries.com)<br>A manufacturing company in Scottsburg, Indiana specializing in industrial products and solutions | Plastics Manufacturing | 🇺🇸 Scottsburg | 285 | 1960 |
| 99 | [Foresight Technologies](https://www.tamtam.ai/c/foresight-technologies) (foresighttech.com)<br>Global manufacturer specializing in CNC machining, plastic welding, fabrication, hi purity plumbing, and sub system assembly for aerospace, semiconductor, medical, and electronics industries | Plastics Manufacturing | 🇺🇸 Tempe | 285 | 1995 |
| 100 | [Bemis Associates](https://www.tamtam.ai/c/bemis-associates) (bemisworldwide.com)<br>Bemis partners with leading brands to design and construct innovative, high-performance products, focusing on collaboration, creativity, and commitment to employees | Plastics Manufacturing | 🇺🇸 Shirley | 284 | 1910 |

## 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.

## More company lists in the United States

- [The largest companies in the United States](https://www.tamtam.ai/l/largest-companies-united-states) (104,977)
- [Multinational companies in the United States](https://www.tamtam.ai/l/multinational-companies-united-states) (16,192)
- [Manufacturers in the United States](https://www.tamtam.ai/l/manufacturers-united-states) (8,678)
- [Professional services firms in the United States](https://www.tamtam.ai/l/professional-services-firms-united-states) (7,079)
- [Retail chains in the United States](https://www.tamtam.ai/l/retail-chains-united-states) (6,980)
- [Financial services firms in the United States](https://www.tamtam.ai/l/financial-services-firms-united-states) (6,867)
- [Companies with in-house R&D in the United States](https://www.tamtam.ai/l/r-and-d-companies-united-states) (6,794)
- [IT Services and IT Consulting companies in the United States](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-united-states) (6,695)
- [SaaS companies in the United States](https://www.tamtam.ai/l/saas-companies-united-states) (6,410)
- [IT services companies in the United States](https://www.tamtam.ai/l/it-services-companies-united-states) (5,818)
- [Healthcare providers in the United States](https://www.tamtam.ai/l/healthcare-providers-united-states) (5,810)
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- [Hospitals and Health Care companies in the United States](https://www.tamtam.ai/l/hospitals-and-health-care-companies-united-states) (5,573)
- [Hardware manufacturers in the United States](https://www.tamtam.ai/l/hardware-companies-united-states) (5,344)
- [Software Development companies in the United States](https://www.tamtam.ai/l/software-development-companies-united-states) (5,311)
- [Financial Services companies in the United States](https://www.tamtam.ai/l/financial-services-companies-united-states) (5,014)
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- [AI companies in the United States](https://www.tamtam.ai/l/ai-companies-united-states) (4,246)
- [Public sector organisations in the United States](https://www.tamtam.ai/l/public-sector-organisations-united-states) (4,151)
- [Subscription businesses in the United States](https://www.tamtam.ai/l/subscription-businesses-united-states) (3,923)
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- [Construction companies in the United States](https://www.tamtam.ai/l/construction-companies-united-states) (3,271)

## The same list elsewhere in United States

- [Plastics Manufacturing companies in Michigan](https://www.tamtam.ai/l/plastics-manufacturing-companies-michigan) (41)
- [Plastics Manufacturing companies in Ohio](https://www.tamtam.ai/l/plastics-manufacturing-companies-ohio) (36)
- [Plastics Manufacturing companies in Wisconsin](https://www.tamtam.ai/l/plastics-manufacturing-companies-wisconsin) (27)
- [Plastics Manufacturing companies in California](https://www.tamtam.ai/l/plastics-manufacturing-companies-california) (25)

## The same list elsewhere

- [Plastics Manufacturing companies in the world](https://www.tamtam.ai/l/plastics-manufacturing-companies-in-the-world) (1,450)
- [Plastics Manufacturing companies in North America](https://www.tamtam.ai/l/plastics-manufacturing-companies-in-north-america) (483)

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