In blow molding, a molten plastic tubular form, produced by extrusion, is used to form the part. This form, called a parison, is enclosed inside a mold and then injected with air or other compressed gas. This expands the parison against the sides of the mold cavity, forming a hollow object the size and shape of the mold.

Blow molding is used to produce hollow plastic parts and containers. Different blow molding processes offer different advantages based on the material used, performance requirements, production quantity, and costs.

There are different blow molding processes and constantly advancing technologies that can determine the right solution for you. Some of the different processes include: injection blow molding, custom, co-extrusion, multi-layer, suction, and 3D.

Plastics are used to fabricate a wide range of blow molding parts, including: fuel/oil/coolant tanks, air ducts and intake/exhaust systems, bottles, boxes, panels, tables, lawn furniture and much more.

The ability to blow mold articles that are nearly impossible or very difficult to injection mold is a significant advantage for blow molding.

Because blow molds are subject to considerably less pressure than injection molds, they can be fabricated from aluminum at lower cost than injection molds.

Great strides are being made every day in engineering materials that will satisfy ever changing customer requirements. Some of the most commonly used base materials include: polyethylene, polypropylene, nylon, polyester, PET, and TPE's.