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Vacuum Forming Plastic
Vacuum forming is a type of thermoforming that involves placing a sheet of plastic into a frame and applying heat. When the plastic is malleable and the proper temperature has been reached the plastic sheet begins to sag. The frame lowers and the plastic starts to cover the mold. A seal is created around the outside edges of the mold and a vacuum removes any air inside the cavity. The vacuum action causes the plastic to be pulled down around the mold. Once the plastic has hardened, the vacuum is shut off and the frame lifts up along with the newly formed plastic part. The part is then removed from the frame and all excess plastic is trimmed off around the edges of the part. Some products that are usually made by the vacuum forming process include: dashboards, display racks and beverage holders. |
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