The blow molding process
Blow molding makes hollow parts, such as containers or bellows. We create a part by extruding a tube of plastic, called a parison, and then closing a mold on it. We pinch the tube at the bottom, welding it together, and then insert a blow pin in the top, which seals the top of the mold. We then inject air through the blow pin, which inflates the parison to conform to the shape of the mold. The mold opens, and the new part drops out.
Sounds simple, doesn’t it? Actually, to get to the point where the part drops out, our team works through an immense number of design, material, and production variables to create a process that reliably produces parts that do exactly what our clients want and nothing that they don’t.
Designing for Manufacturability
Successful blow molding projects start with our engineers’ involvement early in the development process. Our engineers work with your team to ensure that your part meets functional requirements and is manufacturable with a stable process to ensure consistent results.
