Extrusion Blow Molding

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

The extrusion blow molding process is based on glass blowing to produce glass bottles, but uses PET, or biaxial oriented polyethylene terephthalate, as well as high density polyethylene, both of which are considered the best thermoplastics for extrusion blow molding. The plastic bottles are lightweight, usually clear or tinted, and strong enough to withstand the pressure of carbonation in certain beverages. Read More…

Extrusion Blow Molding Informational Video

Leading Manufacturers

Clinton, IA  |  563-242-1801

With locations in Clinton & Dewitt, IA, Walnut Ridge, AR & Mexicali, Mexico, Custom-Pak leads the way in advanced blow molding technology, even designing & building energy efficient machines & sophisticated molds for faster, more cost efficient & better quality results. We serve all markets with a wide array of products. Contact us today for more information.

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Custom-Pak, Inc. $$$

Winfield, KS  |  620-221-9464

Western Industries provides custom plastic blow molding product design, engineering, mold design and extensive capabilities and manufacturing expertise for mid- to large-part products, in both single- and dual-head processing. As a blow molder supplier that offers plastic bottles, blow molded cases, & more, contact us for all of your blow molded plastic needs.

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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. 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!

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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. Iceberg Molding has an established infrastructure like no other. We can simply mold parts for you or completely assemble & ship your finished products anywhere in the world.

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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!

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LHB Plastics $$$

Riverside, CA  |  951-354-0258

At R.M.Tool, we provide custom CNC Machining to help our customers solve some of their toughest machining needs. Our state-of-the-art CNC machining department is equipped with Milling, Turning and Wire EDM Machining Centers. We can process materials such as Steel, Stainless, Aluminum, and other Exotic Materials. We strive to always please our customers by always delivering quality products. From design to finished product, R.M.Tool is your one stop shop for all of your CNC machining needs.

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Hi-Rel Plastics & Molding $$$

Coloma, MI  |  269-849-3200

SPI Blow Molding has provided custom blow molding for a diverse range of industries since 1952. Markets served include electronics, plumbing, agricultural and many more - specializing in low to medium volume work and have a variety of materials available such as HDPE, ABS, polycarbonate, and TPE. No matter what the demands, we are focused on developing a proactive and effective solution for your needs.

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SPI Blow Molding LLC $$$

Manchester, NH  |  603-644-1660

North American Plastics is ISO certified, providing custom plastic injection molding and blow molding products across America. If you need a worry free solution for your project, allow us to serve you as well. Our experience and state of the art injection molding & blow molding equipment allows us to serve a variety of industries. Custom blow molding products include bottles, bellows & containers.

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North American Plastics, Ltd. $$$
placeholder image Custom-Pak, Inc. Western Industries Plastic Products LLC Blow Molded Products Iceberg Molding LHB Plastics Hi-Rel Plastics & Molding SPI Blow Molding LLC North American Plastics, Ltd.

Extrusion blow molding bottles are made to hold beverages like juice and pop, liquid soap, detergent and motor oil for consumer and industrial applications within the food and beverage, automotive, cleaning products, medical, cosmetics and drinking water industries. They are extruded into two mirror molds, and therefore have a visible seam dividing the bottle in half. Compared to other blow molding process, extrusion blow molding generates little waste, all of which is recyclable.

Extrusion Blow Molding Custom Plastic Blow Molding - Apex Plastics

Extrusion blow molding begins with the formation of a parisan, which is a plastic tubular preform. Plastic pellets are loaded into a hopper and fed down into an extruder screw with a heating unit. As the pellets pass through the screw, they become molten and are pumped toward the die head. The liquid plastic flows horizontally and then downward, and emerges as a soft tube preform. The preform, which is called a parisan, is then extruded by compressed air as 2 molds simultaneously come together to form a cavity in the shape of the container.

The plastic balloons out and is stretched thin into the mold cavity, taking its shape. The mold cavity is then chilled by cold water running through the molds. The newly formed part will always have a seam where the two mirror molds came together, and a small point at the bottom where the plastic balloon started. Some parts may have excess plastic that needs trimming from the neck or parting lines.

The newly formed plastic parts are then put through post forming operations, including drilling, die cutting, milling, painting and adding decals or labels. Each container or part only takes a few seconds to form, and may be done in high volumes. They are formed in a continuous or intermittent method.

Extrusion Blow Molding Informational Video