Stretch Blow Molding Manufacturers and Companies

IQS Directory is a top industrial directory listing of leading industrial stretch blow molding companies and suppliers. Access our comprehensive index to review and source stretch blow molding companies with preview ads and detailed product descriptions. These stretch blow molding companies can design, engineer and provide stretch blow molding services to your specifications and application need. A quick and easy to use request for quote form is provided for you to contact these stretch blow molding companies and suppliers. Each company has detailed profile information, locations, phone number, website links, product videos and product information defined. Read customer reviews and product specific news articles. We are the right resource for your information requirement whether its for a manufacturer of reheat stretch blow molder, blow molded stretch, 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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Stretch Blow Molding Industry Information

Stretch Blow Molding

Stretch blow molding is a process that manufactures plastic containers, most commonly the two liter beverage bottle. It is able to produce uniform finished products that do not need to be joined and do not have a visible seam. The bottles are strong enough to handle the pressure from carbonated beverages (about 60 psi). They also hold other beverage and food supplies, like mineral water, liquor, juice, beer, cooking oils, peanut butter, and milk.

Quick links to Stretch Blow Molding Information

Materials Commonly Used in Stretch Blow Molding

Stretch blow molded bottles are most commonly made out of PET (polyethylene terephthalate), which has a polymer microstructure with low permeability to gases and will not contaminate beverages.

Stretch blow molded bottles are also made of thermoplastics like:

  • Acrylonitrile Butadiene Styrene
  • Polystyrene
  • Polyvinyl Chloride
  • Polyamide
  • Polycarbonate
  • Polysulfone
  • Acetal
  • Polypropylene

Types of Stretch Blow Molding

There are two different types of stretch blow molding: injection stretch blow molding (ISBM) and reheat blow molding (RHB). Both types use injection molded preforms to produce plastic bottles, which are usually clear and colorless but may have colored tints. The two step process is fast and highly repeatable, with larger stretch blow molding machines producing between 15,000 and 20,000 bottles an hour.

There is one main difference between the two types of stretch blow molding. Injection stretch blow molding creates the plastic preforms out of loose pellets on site, often within the same inline conveyor system as the blow molding machine. Since this process requires the use of an injection molding machine, it is high in cost if not done in high runs. Reheat blow molding, on the other hand, does not injection mold the preform. Instead, these manufacturers purchase the preforms already-made and reheat them until soft and formable. Reheat blow molding eliminates the need for expensive injection molding machinery, which is a costly investment.

The rest of the stretch blow molding processes are identical for both methods. The preforms are already made with the bottle neck, which may have threading for twist-on lids or caps. A metal ram pushes the plastic, forcing it to stretch to the length of the mold cavity. Then, it balloons out by compressed air and internal pressure. The preform is stretched in hoop and axial directions and adheres with the shape of the mold walls. After it cures and cools down, the newly formed part is ejected from the mold. The process takes mere seconds to finish, and complex designs are possible. The bottles are all recyclable.

More Stretch Blow Molding Information

Stretch Blow Molding Informational Video


5 Advantages of Choosing a Turnkey Blow Molding Supplier

You are probably familiar with a traditional blow molding supplier. They can process your part, as long as your part fits their existing machinery. A turnkey blow molding supplier, on the other hand, takes care of your project from start to finish. It sources and processes the resin you will use, designs and customizes your product, provides the equipment needed specifically for your project, and manufactures & ships your part. Instead of using separate vendors for each step of the blow molding process, you can build a strong relationship with... Read More About This