Injection Blow Molding Manufacturers and Companies

IQS Directory provides a detailed list of injection blow molding companies and suppliers. Find injection blow molding companies that can design, engineer, and manufacture injection blow molded products to your specifications. Peruse our website to review and discover top injection blow molding companies with roll over ads and complete product descriptions. Connect with the injection blow molding companies through our hassle-free and efficient request for quote form. You are provided company profiles, website links, locations, phone numbers, product videos, and product information. Read reviews and stay informed with product new articles. Whether you are looking for manufacturers of injection blow molding products, injection blow molds, and rotational blow molding of every type, IQS is the premier source for you.

Leading Companies:

  • 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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  • 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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  • Sturgis, MI 269-651-9488

    Need injection blow molding machines? We can provide you with everything you need to satisfy your customers. Our goal is to stop the frustrations that other blow molding suppliers offer and instead offer our customers with clear, low cost, high tech solutions to their problems. Don’t believe us? Visit us online or give us a call today so we can prove it!

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  • Riverside, CA 951-354-0258

    Hi-Rel Plastics & Molding, Inc. is a turn-key manufacturer founded in 1984. We offer custom injection blow molding and custom plastic injection molding for a variety of industries. We process an almost infinite variety of thermoplastic resins, our prices are competitive, and our delivery is on time. Value-added services include label application, assembly services, and custom packaging and shipping services. Our company is ISO 9001:2015, AS 9100 Rev D, 13485:2016 Certified.

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  • 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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Injection Blow Molding Industry Information

New Innovations Regarding Injection Blow Molding

Injection blow molding, as its name would suggest, is a combination of plastic injection molding and blow molding that creates hollow, thin-walled plastic containers that are smaller and does not have handleware. It is faster than extrusion blow molding, and offers higher precision. Parts may have a threaded neck for screw-on lids, very thin yet strong walls and safety enclosures like those on pill bottles.

Injection blow molding companies have been reaching out to discover ways to make their facilities more “green” and the innovations that are now being utilized have been very impressive. Businesses do more then just simple recycling programs. These companies have added water chillers in the injection process that causes drastic savings in the energy costs of the manufacturing procedures. Also many companies acknowledge that plastic products are a big contributor to the overall pollution in this world and these manufacturers are designing new models that use less plastic. For example, in the water bottle industry there are innovations in the water bottle design that utilizes a thinner wall layer. Water bottle manufacturers also engineer new bottles that will bio-degrade at a much faster rate than bottles which were made five years ago.

Innovations like this are a catalyst for not only a greener world but also profits for companies. Some consumers gravitate toward corporations who are environmentally conscious. These companies are not compromising the integrity of their products but merely updating the methods in which they produce plastic items. Many companies are even expanding their facilities due to the increased demand on the industry for more injection blown products. These expansions provide more jobs for constructing and maintaining the facility. This increase also allows for more opportunities for innovation and manufacturing growth. There is something to be said for those companies that make investments into renewable energy solutions and building upgrades. Solar panels and wind turbines cannot power an entire manufacturing facility but long term energy savings will result in savings for the company and for the customers.

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. 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.

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.

More Injection Blow Molding Information

Custom-Pak Case
Western Case
Injection Blow Molding - Custom-Pak.
Injection Blow Molding - Western Case.

Injection Blow Molding Informational Video


Custom Injection Molded Medical Diagnostic Rack

This was a transfer project for a large medical device OEM which includes injection molding and assembly. The part shown here is a component of a medical Diagnostic Machine called a Slide Output Rack. The Rack is a 3 piece design assembled together with 3 screws and quality control tested by functionally fitting to the mating piece in the machine. The 2 Side pieces are injection molded with a 20% glass-filled PC resin and the Front Piece is injection molded with a blue-tint PC resin. The finished assemblies are individually... Read More About This