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Blow Molders

A reliable source for Blow Molders information and a resource for accessing leading Blow Molders and suppliers.

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. Read More…

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.
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Leading Manufacturers

Winfield, KS  |  620-221-9464

No matter what your blow molding request, Western Industries is ready to assist you. We believe in thinking outside the mold, and using unique methods to come up with solutions for our customers. We have access to state-of-the-art technology and over 100 years of combined experience serving a variety of industries. When you choose Western Industries, you have the Western Advantage. Call today for more information!

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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.

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Blow Molded Products $$$

Sturgis, MI  |  269-651-9488

With blow molding presses from 1 to 80 lbs., Iceberg Molding has the ability & resources for every step of your blow molding requirements - from a competitive part quote to part & product development support start to finish.

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Iceberg Molding $$$

Riverside, CA  |  951-354-0258

Founded in 1984, 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. With more than 35 years of experience, our quality products are unparalleled. We process an almost infinite variety of thermoplastic resins, our prices are competitive, our delivery is on time, and we offer superior customer service. Our company is ISO 9001:2015, AS 9100 Rev D, 13485:2016 Certified.

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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.

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SPI Blow Molding LLC $$$
placeholder image Western Industries Plastic Products LLC Blow Molded Products Iceberg Molding Hi-Rel Plastics & Molding SPI Blow Molding LLC

Blow Molded Plastic Cases Blow Molders - Custom-Pak, Inc.

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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