Injection Blow Molding

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

Pop bottles are most often made by this process because the design is not limited to uniform thickness-thicker bottoms and middles are possible by increasing the cavity around the mandrel in the second step of the injection blow molding process. They are also able to handle the pressure generated from holding carbonated beverages. Injection blow molded products are usually made in very high volumes, in order to offset the higher cost of setting up 2 different molds for one process. Read More…

Injection Blow Molding Injection blow molding is a two step process that uses a mandrel to form the preform, and a blow molding machine to form it into a plastic container. Thermoplastics like high density and low density polyethylene, polycarbonate, polypropylene, polyvinyl chloride, Barex and polyethylene terephthalate are all used in injection blow molding to produce containers like tanks, jars and bottles.

Leading Manufacturers

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.

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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 $$$

Willowbrook, IL  |  630-828-2757

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.

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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

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 $$$

Holyoke, MA  |  800-553-0120

Universal Plastics offers blow molded plastics, as well as blister packaging and clamshells. Large or small volumes are available for your custom-designed product, in sizes up to 16 feet. Fast production, low tooling costs and quality products are waiting for you!

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

Injection Molded Plastic Container Injection Blow Molding - Iceberg Molding

Since it is essentially 2 forming processes combined into 1, injection blow molding involves more steps than other forms of blow molding. First, a parisan made of plastic is formed when a thermoplastic preform is heated to molten form and injected around a hollow mandrel called a blow stem. Once semi-cured but still soft and formable, the newly formed parisan, which is still around the stem, is placed into the blow molding chamber. The steel blow stem then extends, forcing the plastic to elongate to the desired size of the product, which will also increase its overall strength.

Then, compressed air is injected through the hollow blow stem and into the parisan. The almost-molten plastic inflates like a balloon and is blow against the walls of the mold cavity, taking its shape. After it cools and hardens, the newly formed plastic container is ejected from the mold. It exhibits a seamless design and does not need to be trimmed. Injection blow molding machines use multiple mandrels, and may form up to 12 containers at one time.

Injection Blow Molding Informational Video