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Blow Molders Manufacturers and Companies

IQS Directory provides a comprehensive list of blow molders and suppliers. Use our website to review and source top blow molders with roll over ads and detailed product descriptions. Find blow molders that can design, engineer, and manufacture blow molding products for your company. Then contact the blow molders through our quick and easy request for quote form. Website links, company profile, locations, phone, product videos and product information is provided for each company. Access customer reviews and keep up to date with product news articles. Whether you are looking for manufacturers of extrusion blow molds, stretch blow molds, plastic blow molds, or customized blow molding of every type, this is the resource for you.

  • Winfield, KS 620-221-9464

    Among blow molders, Western Industries stands out with our specialized blow molding equipment, trimming equipment, and other processing equipment. Our large factory facility enables us to manufacture orders of any size, and we can handle large projects with ease! Have a custom project? No problem! We can alter any design to suit your company’s need. Contact us today to learn more!

    Western Industries Plastic Products LLC
  • Riverside, CA 951-360-6055

    At Blow Molded Products, we have experience doing custom blow molding for a multitude of industries, including furniture, sporting goods, health and safety, electronics, and more. We are capable of performing services such as single & double wall blow molding, and mold making—all at a competitive price. Whether it is a carrying case or a custom designed product, no job is too challenging for us. We are ISO 9001 compliant. Contact us today to learn more!

    Blow Molded Products
  • Sturgis, MI 269-651-9488

    Here at Iceberg Molding, we do not have the frustrating customer service experience like many other blow molders. Instead, we supply a wide range of top of the line blow molding equipment like extrusion molding supplies, injection molding supplies, and more. Our customers remain our top priority from the moment they walk in the door! Visit us online or call to find out how we can serve you!

    Iceberg Molding
  • Willowbrook, IL 630-750-9494

    At LHB Plastics, we don’t just do blow molding. We make it our goal to personalize our projectsto ensure client success. LHB Plastics offers a full range of services, from molded parts to complete assembly. Additional services include engineering support, finished part testing, in-house 3D rapid prototype part printing, and more. Our company is ISO 9001/14001 – 2015 Certified / TS 16949 Compliant. Call LHB or visit our website today to learn more!

    LHB Plastics
  • Riverside, CA 951-354-0258

    Hi-Rel Plastics & Molding, Inc. is a turn-key manufacturer who offers custom blow molding and custom plastic injection molding for a variety of industries. Our facility enables us to serve every facet of the molding process from part evaluation, 3D Printing, prototyping, tool design, tool making, sampling and production of quality finished parts. Our designers and engineers have the expertise to develop the perfect solution. Our company is ISO 9001:2015, AS 9100 Rev D, 13485:2016 Certified.

    Hi-Rel Plastics & Molding
  • Coloma, MI 269-849-3200

    Since 1952, SPI Blow Molding has provided custom blow molding for a diverse range of industries, such as agricultural, plumbing, electronics, and more. Our team can meet your needs with a variety of plastics, such as HDPE, ABS, polycarbonate, and TPE. Secondary operations and assembly services are also available. SPI is a leader in our industry due to our customer-oriented ability to deliver successful production solutions and unmatched product quality.

    SPI Blow Molding LLC
  • Rogers, MN 763-428-8310

    Our blow molded plastics are engineered to meet the needs of your exact application. The reliable staff here at Metro Mold & Design, Inc. will work with you to determine the best specifications down to the part weight and wall thickness. You will not be upset with the quality of our blow molded plastics. We aim to exceed your expectations. Give our experts a call today to learn more information!

    Metro Mold & Design, Inc.
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ARTICLES AND PRESS RELEASES

R&D Molders, Inc. adds new Bekum BM406D blow molding machine for consumer and medical packaging.

R&D Molders increases it's high end equipment with a new Bekum BM406D which will add to R&D's expertise in consumer and medical packaging products. Read More

businessIndustry Information

Blow Molders

Blow molders, used in the formation of blow molded plastic products, create hollow, thin-walled plastic components and parts. Using continuously running extruders and a tuned die-head, a parison, or tube-like piece of plastic, is formed from thermoplastic resins such as high and low density polycarbonate, polypropylene, polyvinyl chloride, polystyrene, polyamide and acetal.

During the blow molding process, a parison is clamped into a mold cavity, and compressed air is then forced into the tube with the help of a blow pin. The plastic expands, or “balloons” due to the air pressure and fills the shape of the cavity. The cavity is then cooled, usually through the process of conduction using liquid, and the molten plastic hardens and sets in the shape of the mold. The flow of air pressure into the parison needs to be carefully controlled to ensure consistent expansion of the plastic and uniform thickness of the product walls. Varying wall thicknesses could compromise the strength and durability of the final product. Blowmolders use blow molded plastics to manufacture many different products including toys, blow molded cases and drums, plastic beverage bottles and containers, sports equipment and a broad range of products used in the consumer industry.


The purpose of plastic blow molding is to form a uniform finished product that is smooth and airtight and does not need to be joined together in any way. Blow molders can be continuous process machines, such as rotary wheel systems, producing a high-volume of products in a high-paced manner, or the machines can be intermittent, producing a certain number of products at a time rather than a continuous stream with single or multiple cavity capabilities. The processes of plastic blow molding can be extrusion, injection or stretch blow molding depending on elements of the pre-form process. Injection blow molders are used in the manufacturing of smaller, precision-focused items while extrusion blow molders produce large quantities of simple, wide-necked products and handleware. Stretch blow molding is most commonly used in the production of plastic bottles, especially those for use in the beverage industry. Blow molders have the capacity to produce a broad range of product sizes from single-serve bottles to larger containers up to 30 liters in volume, with possible diameters of 24 inches.  Apart from high-volume production, minimal material wastage and the versatility of the process, other advantages to blow molders are the low costs of mold versus product output return and the durability of the products produced.
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