USED BLOW MOLDERS - EXTRUSION
Extrusion blow molders are a plastic manufacturing process to produce bottles of various sizes and shapes. Plastic resin in the form of pellets are fed into an extruder which uses a rotating flighted screw to melt the resin and push it through the head of the extrusion blow molders. The tube-like plastic that exits the head is called a parison. clamp with molds in the shape of the final product close around the parison. A blow pin inserts into the middle of the parison and blows the plastic into the shape of the surrounding mold, which then cools to form the bottle. Many heads are programmable to form parisons with varying wall thickness along the length of the parison. This method is used to counter the effects of the temperature gradient along the length of the parison that would otherwise lead to bottles with non-uniform wall thicknesses. Machinery Center strives to offer a variety of quality used extrusion blow molders for sale from manufacturers such as Uniloy, Cincinnati Milacron, Bekum, Rocheleau, and others
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