California's plastic manufacturing sector plays a vital role, supporting diverse industries through the creation of essential products ranging from packaging to medical supplies. Companies here engage in crafting both traditional and biopolymer products, innovating amidst growing environmental concerns. The industry is transitioning towards sustainable practices, emphasizing recycling and the development of alternative materials. Founded companies vary from family-run operations to large corporate entities, reflecting a blend of tradition and modernization. Organizations are increasingly adopting advanced manufacturing technologies, seeking to meet both local and global demand in a rapidly evolving marketplace.

This list highlights 22 notable plastic manufacturing companies based in California, showcasing a mix of small to medium-sized enterprises and larger corporate organizations. Founded between 1962 and 2020, they range from producers of biopolymers to custom injection molding specialists. Headquartered in various cities, including Sunnyvale, Sacramento, and Los Angeles, these companies have established their status in packaging, engineering, and materials solutions, marking significant contributions to the plastic manufacturing industry.

Continue reading to discover key plastic manufacturing companies in California.

Top 22 Plastic Manufacturing Companies in California

1. Chemtex Global

• Website: chemtexglobal.com
• Ownership type: Private
• Headquarters: Sunnyvale, California, United States (USA)
• Employee distribution: Spain 67%, United States (USA) 17%, Mexico 17%
• Founded year: 1980
• Headcount: 51-200
• LinkedIn: chemtexgloba

Chemtex Global, founded in 1980 and based in Sunnyvale, California, is a private company that specializes in the export of raw materials for plastic packaging. With a workforce of around 51-200 employees, Chemtex Global has established itself as a significant player in the supply of high-density polyethylene and metallocene copolymers. Their products cater to various industries, including food packaging, personal care, and industrial applications. The company emphasizes customer support through training and technical assistance, enhancing the understanding and application of their materials. Chemtex Global has a global presence, with operations in the Americas and Europe, and is committed to sustainable practices, as evidenced by their membership in the Alliance to End Plastic Waste. This involvement highlights their dedication to addressing plastic waste and promoting responsible use of materials in the industry.

2. Plastikon Industries Inc

• Website: plastikon.com
• Ownership type: Corporate
• Headquarters: Hayward, California, United States (USA)
• Employee distribution: United States (USA) 98%, Mexico 2%
• Latest funding: August 2023
• Founded year: 1982
• Headcount: 201-500
• LinkedIn: plastikon-industries-inc

Plastikon Industries Inc, based in Hayward, California, is a plastic manufacturer that specializes in custom contract manufacturing. Established in 1982, the company has built a reputation for providing a wide range of services, including plastic injection molding, prototyping, and engineering design. Plastikon primarily serves clients in the healthcare, pharmaceutical, and consumer goods sectors, which are critical industries that require high-quality plastic components. The company operates with a strong emphasis on quality assurance and regulatory compliance, holding multiple ISO certifications that reflect their commitment to industry standards. With a workforce of approximately 377 employees, Plastikon has facilities in the United States and China, allowing them to cater to a global clientele. Their operations are supported by advanced technology and a focus on continuous improvement, ensuring they meet the evolving needs of their customers.

3. Canyon Plastics, LLC / A VPET USA Co

• Website: canyonplastics.com
• Ownership type: Corporate
• Headquarters: Santa Clarita, California, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: March 2022
• Founded year: 1969
• Headcount: 51-200
• LinkedIn: canyon-plastics-llc

Canyon Plastics, LLC / A VPET USA Co is a manufacturing firm based in Santa Clarita, California, with a history dating back to 1969. The company specializes in producing high-quality plastic products through various molding techniques, including blow molding and injection molding. They cater primarily to businesses requiring custom packaging solutions and plastic components. Canyon Plastics emphasizes sustainability in its operations, utilizing FDA-approved materials and implementing environmentally friendly practices, such as solar energy in their manufacturing facility. Their capabilities extend to mold making, product design assistance, and custom packaging, showcasing their adaptability to client specifications. With a workforce of around 51-200 employees, Canyon Plastics remains a significant player in the plastic manufacturing sector, committed to quality and innovation.

4. Interstate Plastics

• Website: inadma.com
• Ownership type: Private
• Headquarters: Sacramento, California, United States (USA)
• Founded year: 1980
• Headcount: 201-500
• LinkedIn: interstate-plastics

Interstate Plastics, founded in 1980 and based in Sacramento, California, operates as a private materials distributor specializing in advanced plastics. The company caters to a variety of industries, including automotive, medical, and construction, by providing high-quality materials essential for manufacturing processes. They offer a range of products, including acrylic, nylon, PTFE, and PVC, among others. Interstate Plastics employs a B2B model, providing cut-to-size services and fast shipping from ten nationwide locations. Their commitment to sustainability is evident through initiatives aimed at reducing their carbon footprint, which includes waste reduction and energy-efficient practices. This focus on sustainability, combined with their extensive product offerings and industry experience, positions them as a relevant player in the plastic manufacturing sector.

5. Medway Plastics Corp

• Website: medwayplastics.com
• Ownership type: Family Owned
• Headquarters: Long Beach, California, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1974
• Headcount: 51-200
• LinkedIn: medway-plastics-corp

Medway Plastics Corp, founded in 1974, is a family-owned business based in Long Beach, California, with an additional facility in Round Rock, Texas. The company specializes in custom plastic injection molding, providing tailored solutions for a variety of industries, including automotive, food packaging, and medical devices. With a workforce of approximately 66 employees, Medway emphasizes high-quality manufacturing and customer satisfaction. Their capabilities extend beyond molding to include engineering, design, and research and development, allowing them to address complex customer needs effectively. Medway is also committed to sustainability, employing practices that ensure zero plastic waste goes to landfills and utilizing green technologies for energy efficiency. Their R&D efforts have led to the development of numerous proprietary products and patents, underscoring their innovative spirit in the plastic manufacturing sector.

6. Southland Polymers Inc.

• Website: southlandpolymers.com
• Ownership type: Private
• Headquarters: Santa Fe Springs, California, United States (USA)
• Employee distribution: United States (USA) 71%, Mexico 29%
• Founded year: 1979
• Headcount: 11-50
• LinkedIn: southland-polymers-inc.

Southland Polymers Inc. is a private company based in Santa Fe Springs, California, specializing in the manufacturing and distribution of thermoplastic resins. Established in 1979, the company has built a reputation for providing high-quality materials, including ABS and Polypropylene, to various industries. With a workforce of 28 employees, Southland Polymers focuses on delivering detailed product information and robust customer support, ensuring that clients can make informed decisions about their material needs. The company also engages in material science and research, compounding, and logistics, which enhances its service offerings. Southland Polymers serves a significant portion of its market in the United States, with a notable presence in Mexico, reflecting its operational reach and commitment to customer service.

7. Delta Pacific Products

• Website: deltapacificinc.com
• Ownership type: Corporate
• Headquarters: Union, California, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: May 2019
• Founded year: 1988
• Headcount: 51-200
• LinkedIn: delta-pacific-products-inc

Delta Pacific Products, also known as Westfall Technik, LLC, is a plastics manufacturer based in Union, California. Established in 1988, the company specializes in injection molding and offers a range of related services. They cater to various sectors, with a strong emphasis on healthcare and consumer packaged goods. Westfall Technik is recognized for its innovative manufacturing solutions, focusing on high-volume production and automation. Their operational model integrates advanced technology and quality assurance processes, ensuring that they deliver high-quality products consistently. The company has not reported any recent funding, indicating a stable operational status without external financial influences. With a workforce of around 51-200 employees, Delta Pacific Products continues to play a significant role in the plastic manufacturing industry, adapting to market demands and technological advancements.

8. VEM Group / VEM Tooling / VEM Medical

• Website: vem-tooling.com
• Ownership type: Private
• Headquarters: Clovis, California, United States (USA)
• Employee distribution: India 56%, Thailand 22%, Mexico 10%, Other 12%
• Founded year: 1998
• Headcount: 201-500
• LinkedIn: vem-tooling

VEM Group, operating through VEM Tooling and VEM Medical, is a manufacturing company based in Clovis, California, established in 1998. The company specializes in plastic manufacturing and tooling solutions, offering a comprehensive range of services that include injection mold tooling, injection molding, assembly, and advanced 3D steel printing. VEM Tooling caters to a variety of sectors, such as medical devices, automotive, consumer products, and electronics, providing high-quality and efficient manufacturing processes. Their facilities are equipped to handle large-scale production and assembly, with certified cleanrooms for sensitive medical components. VEM Group emphasizes quality control and continuous improvement, ensuring that their products meet stringent industry standards. With a workforce distributed across several countries, including India, Thailand, and Mexico, VEM Group is well-positioned to support global manufacturing needs while maintaining a local footprint. Their innovative approach and commitment to customer satisfaction underscore their role in the plastic manufacturing industry.

9. Poly-Tainer, Inc.

• Website: polytainer.com
• Ownership type: Private
• Headquarters: Simi Valley, California, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1970
• Headcount: 51-200
• LinkedIn: poly-tainer-inc.

Poly-Tainer, Inc. is a privately owned bottle manufacturer based in Simi Valley, California, with a workforce of approximately 73 employees. Established in 1970, the company specializes in producing PET and polyethylene containers tailored for various industries, including personal care, food and beverage, pharmaceuticals, and household products. Poly-Tainer offers both stock and custom packaging solutions, emphasizing high-quality manufacturing and customer service. Their capabilities include injection stretch blow molding and extrusion blow molding, which allow for efficient production of containers in various shapes and sizes. The company is also committed to sustainability, providing eco-friendly packaging options and utilizing post-consumer recycled materials. With a focus on innovation and quality assurance, Poly-Tainer has built a reputation for delivering reliable packaging solutions that meet the evolving needs of their clients.

10. Verde

• Website: verdebioresins.com
• Ownership type: Corporate
• Headquarters: Fullerton, California, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: October 2024
• Founded year: 2020
• Headcount: 11-50
• LinkedIn: ezonyxbiotech

Verde Bioresins, based in Fullerton, California, is a manufacturer that specializes in the research, development, and production of biopolymer resins. Founded in 2020, the company has quickly positioned itself in the market with its flagship product, PolyEarthylene™, which is a biobased, recyclable, and landfill biodegradable alternative to traditional petroleum-based plastics. Verde's offerings cater to a variety of sectors, including food service, automotive, and consumer goods, emphasizing eco-friendly solutions that do not compromise on performance. Their products are designed to be processed using existing plastic manufacturing equipment, allowing companies to transition to more sustainable materials without significant capital investment. Verde holds several certifications for its products, ensuring compliance with industry standards for safety and environmental impact. With a commitment to innovation and sustainability, Verde Bioresins is actively contributing to the shift towards greener materials in the plastic manufacturing industry.

11. Poly-Tek

• Website: poly-tek.com
• Ownership type: Private
• Headquarters: San Leandro, California, United States (USA)
• Employee distribution: United States (USA) 88%, Saudi Arabia 12%
• Founded year: 1963
• Headcount: 51-200
• LinkedIn: polymeric-technology

Poly-Tek, founded in 1963 and based in San Leandro, California, is a custom molding manufacturer that specializes in rubber, plastic, and polyurethane products. With a workforce of around 24 employees, the company has carved out a niche in the manufacturing sector by providing tailored molded parts to various industries, including automotive, construction, and energy. Poly-Tek prides itself on its engineering capabilities, offering services such as rubber injection molding, plastic injection molding, and cast polyurethane molding. Their commitment to quality is underscored by their ISO/TS 16949 certification, which is particularly relevant in the automotive sector. Over the years, Poly-Tek has developed a robust portfolio of products, supplying nearly 2,500 different parts to the automotive industry alone. Their focus on customer specifications and continuous improvement reflects their dedication to meeting the evolving needs of their clients.

12. Industrial Plastic Supply, Inc.

• Website: iplasticsupply.com
• Ownership type: Private
• Headquarters: Anaheim, California, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1975
• Headcount: 11-50
• LinkedIn: industrial-plastic-supply-inc-

Industrial Plastic Supply, Inc. is a private plastic supplier based in Anaheim, California, with a history dating back to 1975. The company specializes in the distribution of a wide array of plastic materials, including sheets and rods, serving industries such as medical, aerospace, and food processing. With a workforce of approximately 23 employees, they emphasize customer service and rapid shipping, ensuring that clients receive the necessary materials for their manufacturing processes in a timely manner. Industrial Plastic Supply prides itself on offering high-quality, American-made products and maintains a significant inventory of performance plastics. They are ISO 9001:2015 certified and have been a member of the International Association of Plastics Distribution (IAPD) since 1979. Their focus on compliance with industry standards and their commitment to ethical sourcing further enhance their standing in the plastic supply market.

13. ePlastics

• Website: eplastics.com
• Ownership type: Private
• Headquarters: San Diego, California, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1914
• Headcount: 51-200
• LinkedIn: ridout-plastics

ePlastics is a plastic manufacturer and fabrication service provider based in San Diego, California, with a history dating back to 1914. The company specializes in a wide array of plastic materials, including sheets, rods, and tubes, and offers custom fabrication solutions. They serve a broad spectrum of customers, from government entities and large corporations to individual consumers and hobbyists. ePlastics maintains a large inventory of products, including Plexiglass, polycarbonate, fiberglass, and various engineering plastics. Their production capabilities include CNC sawing, drilling, laser cutting, and routing, allowing them to handle both large volume orders and custom projects. With a commitment to quality and service, ePlastics has established itself as a reliable partner for various industries, including construction, medical, and renewable energy.

14. DaMar Plastics

• Website: damarplastics.com
• Ownership type: Corporate
• Headquarters: El Cajon, California, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: $3.2M, September 2022
• Founded year: 1970
• Headcount: 11-50
• LinkedIn: damar-plastics-inc-

DaMar Plastics, based in El Cajon, California, has been a player in the plastic manufacturing industry since its inception in 1970. The company specializes in injection and blow molding services, providing a range of solutions that include mold manufacturing and sustainable practices. DaMar caters to various sectors, notably healthcare and consumer products, demonstrating their adaptability and expertise in meeting the needs of different markets. Their in-house capabilities for mold manufacturing and repair enhance their service offerings, allowing for efficient production processes. The company emphasizes quality and customer satisfaction, which is reflected in their ISO 9001 certification. With a workforce of 18 employees, DaMar maintains a strong commitment to sourcing materials and production within the United States, further supporting local industry. In September 2022, they secured $3.2 million in funding, indicating a robust financial position and potential for future growth.

15. BioCellection

• Website: biocellection.com
• Ownership type: Private
• Headquarters: Menlo Park, California, United States (USA)
• Founded year: 2015
• Headcount: 11-50
• LinkedIn: biocellection-inc-

BioCellection, now operating under the name Novoloop, is a materials manufacturer based in Menlo Park, California. Founded in 2015, the company specializes in converting hard-to-recycle plastic waste into high-quality performance materials. Their flagship technology, Lifecycling™, utilizes a proprietary process to chemically alter post-consumer polyethylene, transforming it into thermoplastic polyurethane (TPU) that meets the performance needs of various industries. Novoloop serves sectors such as footwear, electronics, and automotive, providing sustainable alternatives to conventional materials. The company is committed to reducing carbon emissions and promoting a circular economy, making significant strides in the plastic recycling industry. They have been recognized for their innovative solutions and are actively scaling up their operations to meet increasing demand for sustainable materials.

16. Universal Plastic Mold, UPM INC

• Website: upminc.com
• Ownership type: Family Owned
• Headquarters: Baldwin Park, California, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1962
• Headcount: 201-500
• LinkedIn: universal-plastic-mold-upm-inc

Universal Plastic Mold, UPM INC, based in Baldwin Park, California, is a family-owned manufacturing company specializing in plastic injection molding and related services. Established in 1962, UPM has built a reputation for providing high-quality solutions tailored to the needs of various industries, including automotive, consumer goods, electronics, and medical sectors. The company offers a wide range of services, from tooling and fabrication to assembly and logistics, ensuring a streamlined manufacturing process for its clients. UPM operates a 24/7 facility equipped with advanced machinery capable of handling large-scale production runs, which allows them to meet the demands of their customers efficiently. Their commitment to quality is underscored by their ISO 9001:2015 certification, reflecting their adherence to rigorous standards in production and service. UPM's extensive experience and comprehensive service offerings position them as a reliable partner in the plastic manufacturing sector.

17. Plastirey Containers Inc.

• Website: plastirey.com
• Ownership type: Private
• Headquarters: Ontario, California, United States (USA)
• Employee distribution: Mexico 90%, Brazil 5%, United States (USA) 5%
• Founded year: 1986
• Headcount: 201-500
• LinkedIn: plastirey-containers-inc-

Plastirey Containers Inc., established in 1986, is a private plastic packaging manufacturer based in Ontario, California. The company specializes in producing a variety of plastic products, including bottles, caps, tubes, and jars, primarily for the cosmetic, personal care, and food industries. With a workforce of approximately 201-500 employees, Plastirey operates multiple facilities across North America and Mexico, showcasing its regional influence. The company emphasizes custom mold creation and decoration services, which allows it to meet specific client needs while maintaining a focus on high-quality packaging solutions. Plastirey is certified under ISO 9001:2015 and ISO 22000:2018, ensuring that its products meet rigorous quality and safety standards. This commitment to quality, combined with their innovative approach to packaging, positions Plastirey as a significant player in the plastic manufacturing sector.

18. Bomatic Inc.

• Website: bomatic.com
• Ownership type: Private
• Headquarters: Temecula, California, United States (USA)
• Founded year: 1969
• Headcount: 11-50
• LinkedIn: bomatic-inc-

Bomatic Inc. is a private packaging consultancy based in Temecula, California, specializing in plastic packaging solutions. Established in 1969, the company has built a reputation for high-quality service in package design, engineering, and manufacturing. With a workforce of 21 employees, Bomatic operates from three facilities that total over 75,000 square feet, allowing them to effectively serve a variety of industries, including personal care, pharmaceuticals, automotive, and food packaging. Their mission emphasizes innovation, accountability, and customer satisfaction, which drives their approach to creating custom packaging solutions. Bomatic's extensive experience and commitment to quality make them a notable player in the plastic packaging sector.

19. Cove

• Website: cove.co
• Ownership type: Venture Capital
• Headquarters: Los Angeles, California, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: Series A, $6.6M, October 2023
• Founded year: 2017
• Headcount: 11-50
• LinkedIn: cove-pbc

Cove is a materials science company based in Los Angeles, California, founded in 2017. The company specializes in sustainable packaging and biomaterial solutions, targeting brands in the consumer packaged goods sector. Cove's mission is to provide innovative alternatives to traditional packaging that contribute to reducing plastic pollution. Their team comprises experts from various fields, including scientists, engineers, and designers, many of whom have backgrounds in major corporations like Coca Cola and Procter & Gamble. Cove has recently secured $6.6 million in Series A funding, which will support their efforts in developing and manufacturing sustainable materials. They have gained recognition for their work, being featured in prominent media outlets and receiving awards for their contributions to green technology. Cove's focus on creating biodegradable and eco-friendly packaging positions them as a forward-thinking player in the materials industry, particularly in the context of addressing plastic waste.

20. Republic Bag Inc

• Website: republicbag.com
• Ownership type: Private
• Headquarters: Corona, California, United States (USA)
• Founded year: 1976
• Headcount: 1-10
• LinkedIn: republic-bag-inc

Republic Bag Inc, based in Corona, California, has been a manufacturer of polyethylene extruded film products since its inception in 1976. The company specializes in producing plastic bags and liners, catering to a variety of industries, including healthcare and waste management. Republic Bag is known for its high-quality can liners, which are designed to meet specific operational needs. The company operates a substantial manufacturing facility, boasting 150,000 square feet dedicated to plastic bag production. Their product range includes compostable liners, recycled options, and various types of can liners, showcasing their adaptability to market demands. Republic Bag's focus on performance and customer satisfaction has allowed it to maintain a solid reputation in the plastic manufacturing sector, making it a noteworthy player in the industry.

21. MEIKI Corp

• Website: meikibc.com
• Ownership type: Private
• Headquarters: Chula Vista, California, United States (USA)
• Founded year: 1996
• Headcount: 51-200
• LinkedIn: meiki-corp

MEIKI Corp, also known as Meiki de BC, is a private manufacturing company based in Chula Vista, California, with roots tracing back to Japan. Established in 1996, the company specializes in plastic injection molding and mold making, providing a range of services that include mold repair, painting, and assembly processes. MEIKI Corp has built a reputation for quality and customer satisfaction, striving to meet the needs of various manufacturing sectors. Their engineers are skilled in multiple areas, including heat injection and pad printing, which enhances their service offerings. The company emphasizes compliance with industry standards, ensuring that their products meet the RoHS Directive requirements. With a focus on continuous improvement, MEIKI Corp has earned recognition from its customers as a reliable supplier in the plastic manufacturing industry.

22. Master Plastics

• Website: masterplastics.com
• Ownership type: Private
• Headquarters: Vacaville, California, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1990
• Headcount: 11-50
• LinkedIn: master-plastics

Master Plastics, based in Vacaville, California, is a private manufacturing company that specializes in plastic injection molding and related engineering services. Established in 1990, the company has built a reputation for producing high-quality plastic components that serve various industries, including medical, automotive, food and beverage, electronics, and industrial sectors. Master Plastics operates over 20 injection molding machines, with capabilities ranging from precision parts to large, complex components. Their services extend beyond molding to include mold design, tooling, engineering support, and value-added services such as assembly and decoration. The company prides itself on its engineering expertise, offering advanced solutions like finite element analysis and material selection to optimize product design. With a commitment to continuous improvement and quality, Master Plastics aims to manufacture parts that enhance everyday life.

Plastic Manufacturing Insights: Key Companies in California

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