Polystyrene Manufacturers and Suppliers

IQS Directory implements a thorough list of polystyrene manufacturers and suppliers. Utilize our listing to examine and sort top polystyrene manufacturers with previews of ads and detailed descriptions of each product. Any polystyrene company can design, engineer, and manufacture polystyrene to meet your companies specific qualifications. An easy connection to reach polystyrene companies through our fast request for quote form is provided on our website. The company information includes website links, company profile, locations, phone, product videos and product information. Customer reviews are available and product specific news articles. This source is right for you whether it's for a manufacturer of polystyrene insulation, polystyrene sheets, and polystyrene recycling.

  • Mobile, AL 800-226-1134

    In addition to polystyrene we also have polypropylene and polyethylene products as well as many others. We are dedicated to maintaining our reputation in providing high quality products and services to a worldwide customer base. We use our years of experience in every business encounter in hopes of turning first time customers into a lifelong connection. To learn more about what we may be able to do for you visit our website today!

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  • Alton, IL 800-851-5510

    Cope Plastics maintains one of the industry's largest inventories, stocking a wide variety of plastics to meet our customers’ needs for engineering materials, sheet plastics, specialty industrial products and tubing. We assist with design and we manufacture production parts in our ISO-certified facilities.

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  • National City, CA 619-477-4855

    San Diego Plastics, Inc has a huge selection of plastic materials. Call us today for plastic sheet, rod, tube, film, expanded foam sheet, corrugated sheet, boards, panels and structured sheet. An assortment of acrylic, polycarbonate, PVC, polypropylene & polyethylene in various colors, patterns, textures, thicknesses & grades.

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  • Indianapolis, IL 317-352-1565

    Since 1967, Auburn Plastics & Rubber has been a leading manufacturer of plastic and rubber products. We are a family-owned company built on creating relationships with our customers and manufacturing high-quality products. Auburn Plastics & Rubber is your one-stop shop for all your plastic needs.

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  • Fullerton, CA 888-995-7767

    Supplier of engineering plastic materials—plastic sheets, plastic rods, plastic tubing & film. Products include Delrin®, Nylon, Teflon®, Vespel®, Torlon®, PEEK, Techtron®, PPS, Semitron®, Ultem®, PVDF, PVC, Acrylic, Polycarbonate, PCTFE, PFA, FEP and more.

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Polystyrene Industry Information


Polystyrene (PS) is an aromatic polymer commercially derived from the petroleum based monomer, styrene. This particular plastic is ubiquitous in daily life, second in use only to polyethylene. Polystyrene exhibits the same strength as unalloyed aluminum but is much lighter and offers significantly increased flexibility.

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Applications of Polystyrene

Polystyrene manufacturers fabricate a diverse range of stock forms which may include plastic rods, plastic sheets, plastic films, pipes, tubes, and plates. These may be utilized as finished products or can be processed further to satisfy particular specifications.

Such desirable properties as good thermal and electrical insulation, light weight, and flexibility, as well as a resistance to acids, alkalis, oils, and alcohols, make polystyrene products a popular and economic choice for a broad array of industries. Packaging, building, construction, and architectural design make frequent use of this material. Furthermore, polystyrene is chemically non-reactive, making its use popular in food, medical, biomedical, and pharmaceutical industries, as well as applications involving the storage of volatile chemicals. These products are often sterilized by irradiation or an ethylene oxide treatment.

Electronic housings, compact discs, cutlery, beakers, insulating panels, food trays, packaging products, and window panels are just a few of the myriad polystyrene products available to accommodate the broad spectrum of industrial, commercial, and residential uses. A thermoplastic, PS is pliable when heated and rigid when cold, allowing it to be easily recycled and remolded numerous times. As it is non-biodegradable, diligent recycling is essential to diminishing the environmental impact of this plastic material.

Characteristics of Polystyrene

In its solid form, polystyrene is a colorless, glass-like rigid material. Polystyrene softens just above 100 degrees Celsius and becomes viscous at 185 degrees Celsius. Different fillers can be added to molten polystyrene during processing to alter porosity, strength, flexibility, and thermal capabilities.

Manufacturing Process of Polystyrene

The many uses of polystyrene all begin with the same process of joining monomers to create the plastic polymers. Classified as a liquid hydrocarbon, PS is composed of the elements hydrogen and carbon. Through the free-radical polymerization of petroleum or the derivative phenylethene (another name for styrene), and using benzoyl peroxide as the initiator, these hydrocarbon monomers form covalent bonds with phenol groups to create polystyrene.

Beyond this point, polystyrene can be manufactured in a number of different ways. The most recognizable pre-form of polystyrene is the trademarked extruded foam, Styrofoam. Also available in expanded foam, moldable solids, or viscous fluids, polystyrene is supplied to hundreds of different industries in the most applicable pre-form. Injection molding, casting, extrusion, and stamping are used to manufacture products from this dimensionally stable material.

Polystyrene Manufacturers Informational Video