Ejecting a molten liquid plastic material into a preformed mold creates extrusion blow molded plastics. The two halves of the mold are pressed together and air pressure is used to blow in the liquid plastic until it fully fills the preformed cavity conforming to the mold’s shape. When the molding process in completed, the molded plastic component is emptied from the mold and trimmed of any over molded plastic fragments that are not part of the intended finished piece.
The component is allowed to cool until totally solid and the plastic fully congeals and any additional finishing work is then done to the piece. Some molds have multi-injectors and several plastic components can be fabricated at the same time. Multi-molding allows for a more rapid fabrication process.
Advantages of Extrusion Blow Molding for Blow Mold Plastics
The extrusion blow molding fabrication process is appropriate for creating parts that do not have to be highly precise, can have only one thickness, and do not need to have precise exterior finishes. Extrusion blow molding may be a superior and more inexpensive process for you, since injection molding and injection blow molding can be a more costly process due to higher cost of the injector apparatus. The Western Case team can assist you in figuring out which particular molding process suits your product fabrication needs so that you can plan accordingly.
We have fabricated and helped launch successful projects for all of the world’s top automotive companies. We are proud to be a supplier and we seek to provide our utmost in the area of quality assurance, precision engineering, and project management support.
Western Case’s time honored experience extends to the following manufacturing areas:
Automotive components for exteriors
- Paneling and Railing
- Bumper Support
- Mud Guards
- Door Locking Systems
Automotive Molded Systems – Interior Components
- Garnish Pillars
- Storage Systems
Interior Wrapping for Automotive applications
- Console Lids
- Shifter Knobs
- Steering Wheels
Under the Hood plastic components
- Fan Shroud
- Cooling Systems
- Fuel Tank Systems
- Electrical Covers
Decorative Automotive plastic components
- Interior /Exterior Trim