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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.

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ISO 9001:2008 Certified, R&D Molders is the source for blow molders. Offering a variety of products and services, R&D Molders, a family owned business, can help with any of your project requirements. If you are unsure of what type of product to produce or wondering if we make it in a particular size? Get in touch with R&D Molders and we will gladly help you!
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Custom-Pak offers a one-stop total package of quality, price and service that is unsurpassed. Our 30-year history for blow molders assures you of experience and technical capabilities that are unmatched in our industry. You can choose from a complete range of services from low-cost molding to complete project management. We target our processes to your needs.
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Western Case is the one stop resolution for blow molders and is focused on combining innovation and quality in order to meet your needs. Our success depends on understanding the needs of our customers and being able to deliver a superior products based on their expectations. If you have any questions, please feel free to call one of our representatives.
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At Mr. Nozzle, Inc., we are driven to serve our customers and to provide the marketplace with a premier source for excellent service and quality at a fair and competitive price. Our blow molders comes in a range of sizes, weights, resins, additives and much more. If you are looking for some specific and don't see it on our website, call our company for more help.
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Our worry-free solutions are ideal for a wide range of applications. We are blow molders that specialize in creating custom solutions and we take pride in saying that no matter what your part need is we are here to design a solution for your project. From injection molding to thermoforming, we can supply you with a specialize product. Please visit our website for more information today!
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Our goal is to provide our customers with the highest quality, innovative products in every stage of manufacturing from design to the finished project. We stand out among other blow molders as one of the most innovative and high tech companies in the industry. Look to our innovative designs to provide you with products you can rely one. Visit us online to learn more!
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Industry 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.

Blow Molders
Blow Molders
Blow Molders - Custom-Pak, Inc.
Blow Molders - Custom-Pak, Inc.






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