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…
Leading Manufacturers
Western Industries Plastic Products LLC
Winfield, KS | 620-221-9464Western 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.
Blow Molded Products
Riverside, CA | 951-360-6055At 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.
Iceberg Molding
Sturgis, MI | 269-651-9488With 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.
Hi-Rel Plastics & Molding
Riverside, CA | 951-354-0258At 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.
SPI Blow Molding LLC
Coloma, MI | 269-849-3200Since 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.
RNF Manufacturing
Williamston, MI | 517-655-4351RNF Manufacturing has been an industry leader since 1967. We have over 300 stock items in a variety of shapes and sizes. We offer custom blow molding as well as silk printing and labeling. We want to make your design and innovation become a reality. Whether your project is big or little, you can depend on our experts for premium quality.
Injection Blow Molding - Iceberg Molding
Injection Blow Molding - Iceberg MoldingSince 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.