Blow Molding/

Blowmolding

Blowmolding is the process of using compressed air and molten plastic to create hollow, thin-walled containers. Plastic blow molding is a well-suited method for forming hollow plastic parts, and thousands of applications benefit from the versatility of the process. Blow molders manufacture many different products, including toys, blow molded cases for transport and storage, sports equipment, garbage cans, planters, and most commonly, blow molded containers like plastic bottles for industries such as beverage, petrochemical and automotive.

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R & D Molders, Inc.
Georgetown, TX
512-763-3600
ISO 9001:2008 Certified, R&D Molders is the source for blowmolding. Offering a variety of products and services, R&D Molders, a family owned business, can help with any of your project requirements. If you are unsure of what type of product to produce or wondering if we make it in a particular size? Get in touch with R&D Molders and we will gladly help you!
 
Agri-Industrial Plastics Company
Fairfield, IA
641-472-4188
Custom, large-part blowmolding solutions. Expertise in design & production of structural panels, specialty products, & EPA compliant multi-layer fuel tanks up to 50 gallons. With 30+ years of experience & state-of-the-art machines, Agri-Industrial Plastics is committed to creating the highest quality products & exceeding your expectations at every phase of the process from design to delivery.
 
Custom-Pak, Inc.
Clinton, IA
563-242-1801
Custom-Pak offers a one-stop total package of quality, price and service that is unsurpassed. Our 30-year history for blowmolding assures you of experience and technical capabilities that are unmatched in our industry. You can choose from a complete range of services from low-cost molding to complete project management. We target our processes to your needs.
 
Penguin, LLC
Sturgis, MI
269-651-9488
With blowmolding presses from 1 to 80 lbs., Penguin has the ability & resources for every step of your blowmolding requirements - from a competitive part quote to part & product development support start to finish. Penguin 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.
 
Premium Plastic Solutions LLC
Latrobe, PA
724-424-7000
Premium Plastic Solutions has the most versatile capabilities in the blowmolding industry. Markets we serve include medical waste, automotive parts, safety equipment, lawn & garden, recreational equipment and large capacity potable water bottles. PPS is certified by the U.S. Food & Drug Administration to manufacture contract medical devices and is also ISO 9001-2008 and NSF certified.
 

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Cado Company
Fitchburg, MA
978-343-2989
For over 50 years, Cado Company has been a full service blowmolding company for the plastics industry. We can take your plastic idea from concept to finished product. We provide solutions for short term blow molding runs as well as high volume production in either commodity or engineering grade resins. At Cado, we consult, design, build and produce. Let us be your blowmolding source.
 
Blow Molded Specialties, Inc.
Foley, MN
320-968-7251
As an ISO 9001:2000 certified company, Blow Molded Specialties is a custom OEM molder serving many markets. We tailor the right service for your blowmolding needs, offering early engineering support, tool build management, secondary operations, assembly, packaging, JIT & drop shipments. BMS is dedicated to both employee and customer - Call today for your molding necessitates.
 
Blow Molded Products
Riverside, CA
951-360-6055
One Stop Shop for quality blowmolding products at prices you can afford. Blow Molded Products has long been the industry leader in blowmolding products that require high attention to detail from start to finish. For stock or specially designed products, everything is done in-house--product & mold design & tooling for short or long runs! Call our company today!
 
Pinnacle Plastic Products, Inc.
Bowling Green, OH
419-352-8688
From design to finish, trust Pinnacle Plastic Products with your blow molding needs. This company has over a century of accumulated knowledge that is brought into every blow molding project. We take pride in our hallmarks of extensive design engineering and molding expertise for custom products. If your job can be done with blow molding, we can find a way to do it!
 
Additional Companies
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Industry Information

Blowmolding

Injection blow molding, extrusion blow molding, and stretch blow molding are the three most common types of blow molding and differ mainly during the pre-form stages. Each variation has specific advantages and application uses, yet the basic process of blowmolding is straightforward. The plastic is melted down and formed into a parison which is clamped into a mold, a blow pin is then used to force compressed air into the parison and the molten plastic expands to fit the shape of the cavity. Controlled and constant air flow is essential to the quality of the final outcome as varying wall thicknesses compromise the strength and durability of the product. Blow molders have to ensure the constant expansion of the plastic in the mold to achieve uniform wall thickness in the product. The cavity is cooled, usually by conduction, and the hardened plastic product is removed from the mold.

The purpose of blow molding is to form a uniform finished plastic product that is smooth, strong and airtight and does not need to be joined together in any way, and the products that result from this process are strong and durable. Blow molded products take their shape according to the form of the mold cavity that the molten plastic is forced into, and can be formed from standard and commonly used cavity shapes, or specific products can be created with custom blow molding for unusual and unique purposes. The plastics used are all thermoplastic resins, and include high and low density polycarbonate, polypropylene, polyvinyl chloride, polystyrene, polyamide and acetal. While injection molding and rotational molding are more precise methods of plastic molding, blow molding offers the advantage of high-volume capacity, efficiency and relatively low costs. The process of blow molding usually takes a matter of seconds and therefore blow molding machines can produce high-volumes of durable plastic products in short periods of time with minimal finishing requirements. This capability makes blow molding a wise money-saving choice for manufacturers requiring high numbers of plastic products.