Home >> Science & Nature >> Science

How to Operate a Thermoforming Machine

Thermoforming or vacuum forming is a process in which a sheet of plastic is heated and then stretched onto a single-surface mold where it is held in place by a vacuum. Although a lot of industrial thermoforming machines use an automated process, you can use manual thermoforming machines and techniques for small independent projects. When working with a manual thermoforming machine, it is important to have an eye for detail and the ability to work quickly.

Things You'll Need

Plastic for forming
Heat resistant gloves

Instructions

- 1
  Preheat the oven to the desired temperature for the type of plastic you are forming.
- 2
  Place the item you are using for forming on the forming area. Make sure it is positioned precisely as you want it to be shaped out of the plastic.
- 3
  Place the plastic within the frames and use the binder clips to secure it.
- 4
  Put on heat-resistant gloves and place the plastic in the oven. As the plastic is being heated, carefully observe it. The plastic will first tighten up and then begin to sag. The amount of sag you want will vary depending on the shape you want to create.
- 5
  Turn on the vacuum.
- 6
  Remove the plastic from the oven and place it on the forming machine. This should be done as fast as possible so the plastic remains soft and impressionable.
- 7
  Allow the vacuum suction to work the plastic for a few minutes and then turn off the vacuum.
- 8
  Remove the plastic from the frames after it has had time to cool. You should now have a hardened and formed piece of plastic.

Science