Plastic Blow Molding Manufacturers and Companies

IQS Directory implements a thorough list of plastic blow molding companies and suppliers. Utilize our listing to examine and sort top plastic blow molding companies with previews of ads and detailed descriptions of each product. Any plastic blow molding company can design, engineer, and provide plastic blow molding services to meet your companies specific qualifications. An easy connection to reach plastic blow molding companies through our fast request for quote form is provided on our website. The company information includes website links, company profile, locations, phone, product videos and product information. Customer reviews are available and product specific news articles. This source is right for you whether it's for a manufacturer of blow molding plastics, blow molded stretch, and injection stretch blow molding.

  • Winfield, KS

    No matter what your blow molding needs are Western Industries is ready to assist you. We believe in thinking outside the mold and using unique methods to come up with large-part blow molding 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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  • Aurora, OH

    At Lerner Molded Plastics, we specialize in crafting high-quality blow molded products tailored to meet the diverse needs of our clients. With years of expertise in the industry, we take pride in our ability to deliver innovative solutions that exceed expectations.. For more information about our capabilities, contact us today!

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  • Sturgis, MI

    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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  • Riverside, CA

    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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  • Valencia, CA

    Valencia Plastics is a leading edge blow molder with new methods to add value & ensure superior quality for any job from 10 grams to 3 lbs. Discover our expertise with many plastics & a wide range of machinery. Customers can expect the best from concept to end blow molded plastic product. Industries we serve include aerospace, defense, medical, commercial & pharmaceutical.

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  • Coloma, MI

    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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  • Centralia, ON

    EXI-plast is a full-service provider of custom plastic moulding services, specializing in blow moulded solutions for customers worldwide across a wide variety of industries. With over 30 years of experience developing, producing, and finishing custom plastic products, we have also become a sustainability leader through the integration of postconsumer resins. With products ranging from less than 1lb up to 30lbs, EXI-plast is Molding the Future!

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Plastic Blow Molding Industry Information

Plastic Blow Molding

Plastic blow molding is a manufacturing process used to create a vast array of hollow plastic parts and products.

Quick links to Plastic Blow Molding Information

Advantages of Plastic Blow Molding

No matter which technique a manufacturer uses, plastic blow molding is a highly advantageous process for a number of reasons. First, it offers high-volume productivity at fairly low costs. Second, it yields high turnaround times. Typically, the process can be completed in a matter of seconds, and the resulting products require minimal secondary processing. Also, the use of plastic itself, as opposed other materials, affords manufacturers an incredible amount of versatility; plastic is durable and has a uniform, consistent structure down to a molecular level, yet it is very malleable. To find out more about plastic blow molding, contact a knowledgeable manufacturer today.

Design of Plastic Blow Molding

Blow molding gets its name from its use of a form of plastic called a parison. The parison is actually plastic that has been melted down and preformed into a tube-like shape with a hole at one end. Through this hole, after it is clamped to a mold, compressed air (conveyed by a blow pin) is blown in to expand it. When expanding, the parison behaves like a balloon, expanding uniformly with the assistance of a constant and controlled air flow. This behavior leads to walls and structures that, once set, are thin, strong and durable. Blow-molded pieces additionally tend to be smooth, airtight; they do not require joining. Examples of items created by blow molders include toys, beverage bottles, hose, buckets, storage and transportation cases, garbage and recycling cans and countless other luxury and everyday use products of industries across the board.

Types of Plastic Blow Molding

The plastic blow molding is completed when the created cavity is cooled and removed from mold as a hardened plastic product. This point may be reached using three different processes: extrusion blow molding (EBM), injection blow molding (IBM) and injection stretch blow molding.

Extrusion Blow Molding
The process described in the paragraph above details one of these, extrusion blow molding. As perhaps the most common style of plastic blow molding, its description is often used interchangeably with it. It has a distinguishing feature, however, which is that it uses a metal mold. EBM is divided into two categories: continuous and intermittent. Some of the products created through either type of EBM include watering cans, plastic drums, shampoo bottles and milk bottles. Also, a major advantage of this process is its ability to create handleware.
Injection Blow Molding
Next, injection blow molding is a process that incorporates elements of standard injection molding in order to produce parts and products in large quantities. IBM involves three steps: injection, blowing and ejection. The process begins when a molten polymer is fed into a hot runner manifold and injected via nozzles into a heated cavity and onto a core pin. The polymer surrounding the pin takes on the shape of the cavity, forming an exterior, while the core pin ensures that it remains hollow. This pin then rotates its way to a blow molding station, where the mold is clamped around a core rod, inflated inside a preform and cooled. Once hardened, the finished product is moved into the ejection position and stripped off the core rod. IBM is the least frequently used plastic blow molding process. Generally, it is only used to create small capacity bottles and jars.
Injection Stretch Blow Molding
Finally, injection stretch blow molding, or stretch blow molding, is a process much like IBM. The main difference between the two is that stretch molding involves the use of bottle-shaped preforms, which are later reheated then stretched into their intended shape and size using pressurized air and core rods. Stretch blow molding is known for producing very high volumes of oval, rectangular or cylindrical bottles.

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Plastic Blow Molding Informational Video