Sajar Plastics Inc is an American plastics manufacturer known for custom injection molding and the production of large, complex plastic components. Based in Middlefield, Ohio, the company developed a reputation for gas-assist injection molding, a manufacturing process used to create engineered parts with complex shapes and attractive surface finishes. Sajar Plastics was founded in 1949 and became part of Universal Plastics in 2017.
The company serves business customers rather than operating primarily as a consumer-facing plastics brand. Its capabilities have been associated with medical equipment, laboratory and diagnostic systems, retail equipment, and other industrial applications. Understanding Sajar Plastics Inc requires looking at its manufacturing methods, business history, ownership, and the types of components it produces.
What Is Sajar Plastics Inc?
Sajar Plastics Inc is a custom injection molding business specializing in the design and manufacturing of plastic parts for original equipment manufacturers (OEMs). These manufacturers use specialized components in their own finished products, such as equipment housings, protective covers, panels, and other engineered assemblies.
According to Universal Plastics Group, Sajar is particularly experienced in producing large, complex components that require a high-quality appearance. Its listed manufacturing capabilities include gas-assist injection molding, structural foam molding, and conventional injection molding. The parent company’s published information also describes the Sajar operation as having a 150,000-square-foot facility and being ISO 9001 registered.
Unlike a company selling finished consumer products under a familiar retail brand, Sajar focuses on manufacturing components to meet customer requirements. A customer may need a particular shape, surface finish, dimensional tolerance, or combination of functional features. Custom molding helps turn those engineering requirements into repeatable production parts.
History of Sajar Plastics Inc
Sajar Plastics began operating in 1949 in Middlefield, Ohio. Its history is closely connected with the development of specialized injection molding, particularly gas-assist technology. A historical business profile published in 2017 described the company as one of the early developers of this manufacturing approach.
Over time, Sajar developed capabilities for producing larger components with complex geometries and demanding cosmetic requirements. Its historical applications included medical equipment covers, computer-server doors, and trays used in medical equipment. The company also offered finishing, printing, labeling, assembly, and packaging services alongside molding.
Acquisition by Universal Plastics
In June 2017, Universal Plastics acquired Sajar Plastics. The acquisition brought injection molding expertise into a business that already had experience in heavy-gauge thermoforming. The strategic goal was to give customers access to complementary manufacturing processes within the same corporate group.
Universal Plastics Group continues to list Sajar Plastics among its manufacturing businesses. Its published company information identifies the Sajar operation with large-part molding and markets including medical, laboratory and diagnostic equipment, and retail applications.
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What Does Sajar Plastics Manufacture?
Sajar Plastics produces custom-molded plastic components rather than focusing on one standard product line. The exact part depends on a customer’s design, materials, performance requirements, and intended application.
Examples associated with its capabilities include equipment covers, large handles, doors, bezels, cabinets, panels, and other complex plastic parts. Such components may need to combine structural performance with a consistent external appearance.
The company’s capabilities are relevant to several industries.
Medical and laboratory equipment: Custom plastic housings, covers, trays, and panels can form part of diagnostic or laboratory systems. Parts used in these applications must meet the relevant design, performance, and quality requirements established by the equipment manufacturer.
Retail and dispensing equipment: Large molded housings, bezels, and panels can be used in registers, dispensing machines, and related commercial equipment.
Industrial and business equipment: Structural components, equipment covers, and computer-server doors are examples of applications associated with the company’s historical manufacturing capabilities.
These examples describe potential component applications, not a complete or guaranteed list of current customer orders. Publicly available sources do not establish a comprehensive current customer list for Sajar Plastics Inc.
Manufacturing Technologies Used by Sajar Plastics Inc
The company’s manufacturing capabilities are an important part of its identity. Different molding methods can produce different combinations of part size, structural properties, surface quality, and material use.
Gas-Assist Injection Molding
Gas-assist injection molding is a process in which pressurized gas, commonly nitrogen, is introduced during the molding cycle to help form selected sections of a plastic component. The gas can create hollow channels or help material distribute through specific areas of a mold.
This method can be useful for producing large components with complex shapes, reducing material use in suitable designs, and improving certain aspects of dimensional stability and surface appearance. The results depend on the component’s geometry, resin selection, tooling, and process settings.
Sajar Plastics has a long-standing association with gas-assist injection molding. Its historical company profile describes the founders as among the early developers of the technology during the 1980s.
Structural Foam Molding
Structural foam molding produces plastic parts with a cellular interior structure. Depending on the design and process, this can help manufacturers create relatively large, rigid components while controlling weight and material use.
This technique can be useful for equipment housings and other large parts where stiffness and size matter. However, the final surface appearance and mechanical characteristics depend on the material, tooling, and production requirements.
Universal Plastics lists structural foam molding among Sajar’s capabilities.
Conventional Injection Molding
Conventional, or straight, injection molding involves injecting molten plastic into a mold cavity, allowing it to cool, and removing the finished component. It is widely used for manufacturing repeatable plastic parts in a broad range of shapes and sizes.
The choice between conventional molding, gas-assist molding, and structural foam molding depends on the part’s geometry, performance requirements, expected production volume, appearance, and cost considerations.
Sajar’s combination of these methods gives customers multiple manufacturing options for custom components. The most suitable process must still be determined for each specific project.
Industries Served by Sajar Plastics Inc
Sajar’s published company information identifies medical, laboratory and diagnostic, and retail customers among its principal markets. Historical materials also discuss business equipment and related industrial applications.
These markets can require components that balance durability, appearance, dimensional consistency, and manufacturing efficiency.
For example, a medical equipment manufacturer may need a large protective housing that fits around internal components while meeting defined design requirements. A retail equipment manufacturer might need an attractive exterior panel that accommodates displays, controls, or dispensing mechanisms.
Sajar’s role is to manufacture components according to customer specifications. It is important not to assume that every molded component is suitable for every regulated application; the customer and manufacturer must establish the appropriate materials, testing, and compliance requirements for each project.
What Makes Sajar Plastics Different?
Sajar Plastics stands out for its historical focus on large, complex injection-molded parts and gas-assist manufacturing. Rather than relying on one molding method, its listed capabilities include conventional injection molding and structural foam molding as well.
This combination may help OEMs evaluate different approaches for a component without treating every design as a standard molding job. Engineering support and secondary operations can also matter when a part needs finishing, printing, assembly, or packaging after molding. Historical materials describe these services as part of the company’s broader offering.
However, manufacturing suitability cannot be judged from company history alone. Buyers should confirm current equipment availability, technical capacity, quality documentation, lead times, tooling costs, and production-volume requirements directly with the company.
Location and Company Information
Sajar Plastics is associated with Middlefield, Ohio, in the United States. Its historical business listing gives the address as 15285 South State Avenue, Middlefield, Ohio 44062.
The company’s parent group continues to describe Sajar as part of its manufacturing portfolio. For the most reliable information about current services, quotations, certifications, and contact details, begin with the Universal Plastics Group website.
Older directories may show historical company names, contact details, employee counts, or revenue estimates. Such figures should be treated cautiously unless supported by recent, authoritative records. A historical sales estimate or workforce figure is not necessarily representative of the company’s current operations.
Conclusion
Sajar Plastics Inc has a manufacturing history dating back to 1949 and a long-standing association with gas-assist injection molding. Since its 2017 acquisition by Universal Plastics, the business has been part of a wider manufacturing group offering complementary plastics-processing capabilities.
Its expertise in large, complex molded components makes it relevant to OEMs evaluating custom plastic manufacturing for medical, laboratory, retail, and industrial equipment. For prospective customers, the next step is to confirm current capabilities, engineering support, quality requirements, and project costs directly with the company.
(FAQs)
What is Sajar Plastics Inc known for?
Sajar Plastics is known for custom injection molding, particularly gas-assist injection molding, structural foam molding, and conventional injection molding. Its history includes manufacturing large, complex plastic components for industrial and commercial equipment.
Where is Sajar Plastics Inc located?
Sajar Plastics is associated with Middlefield, Ohio, United States. Historical company listings identify 15285 South State Avenue as its address. Confirm the current contact details with Universal Plastics before arranging a visit or shipment.
Who owns Sajar Plastics Inc?
Universal Plastics acquired Sajar Plastics in June 2017. Universal Plastics Group continues to identify Sajar as part of its manufacturing portfolio.
What products does Sajar Plastics manufacture?
The company manufactures custom plastic components such as equipment covers, panels, handles, bezels, cabinets, and other molded parts. The actual products depend on individual customer designs and project requirements.
What is gas-assist injection molding?
Gas-assist injection molding introduces pressurized gas during the molding process to help form selected sections of a plastic part. It can support the production of complex components and reduce material use in suitable designs.
Does Sajar Plastics serve the medical industry?
Yes. Universal Plastics identifies medical, laboratory, and diagnostic customers among the markets served by Sajar. Specific applications and compliance requirements should be confirmed for each project.
