How aligner thermoforming machine works?

An aligner thermoforming machine is a type of equipment used in the dental industry to create clear aligners, which are a popular orthodontic treatment option.  Here's how it works:

  1. Preparation of Materials: The process starts with the preparation of a thermoplastic material, usually a clear, biocompatible plastic sheet. This material is typically made of a polymer such as polyethylene terephthalate glycol (PETG) or polyurethane or TPU.

  2. Heating: The plastic sheet is fed into the thermoforming machine, where it undergoes a heating process. The machine uses heating elements or infrared heaters to raise the temperature of the plastic sheet to its softening point, making it pliable and easy to shape.

  3. Forming: Once the plastic sheet reaches the desired temperature, it is transferred to a forming station. In this station, the heated sheet is positioned over a mold that has the shape of the desired clear aligner. The mold may be a positive or negative replica of the patient's teeth alignment, depending on the manufacturing process used.

  4. Vacuum or Pressure: After positioning the plastic sheet over the mold, a vacuum or pressure is applied to force the softened plastic onto the mold surface. This helps in accurately forming the aligner according to the shape of the teeth. Vacuum forming is more commonly used, where a vacuum pulls the plastic tightly over the mold, conforming it precisely to the desired shape.

  5. Cooling: Once the plastic sheet has taken the shape of the mold, it needs to be cooled down quickly to harden and retain its shape. Some thermoforming machines have built-in cooling systems, such as fans or water sprays, to expedite this process.

Overall, aligner thermoforming machines automate the process of fabricating clear aligners, allowing for efficient and consistent production of customized orthodontic appliances. Check it out Dental Mates Thermoforming Machine