A thermoforming apparatus is described herein. The apparatus may include a pressure mechanism, a thermal device, a plurality of individually actuatable pins, and/or a pin actuation mechanism. The pressure mechanism may create a force against a die surface. The thermal device may change a thermal state of a material forced by the pressure mechanism against the die surface. The plurality of individually actuatable pins may form the die surface. The pin actuation mechanism may be connected to the plurality of actuatable pins and/or may actuate the pins. This apparatus improves on prior solutions in many ways. For example, embodiments of the thermoforming apparatus may require significantly less time between different molds than previous thermoforming machines and 3D printers.

A thermoforming apparatus is described herein. The apparatus may include a pressure mechanism, a thermal device, a plurality of individually actuatable pins, and/or a pin actuation mechanism. The pressure mechanism may create a force against a die surface. The thermal device may change a thermal state of a material forced by the pressure mechanism against the die surface. The plurality of individually actuatable pins may form the die surface. The pin actuation mechanism may be connected to the plurality of actuatable pins and/or may actuate the pins. This apparatus improves on prior solutions in many ways. For example, embodiments of the thermoforming apparatus may require significantly less time between different molds than previous thermoforming machines and 3D printers.

A method for forming a layered workpiece includes a transfer step of attaching a sheet material 44 to a second mold 30 to transfer a pattern to the sheet material 44. A first mold 20 is provided with a sucking hole 22 penetrating the first mold 20 to open at a portion that comes into contact with a workpiece body 42, a second sucking device 52 that sucks the workpiece body 42 is connected to the sucking hole 22, a hole is created, before or during sucking by the second sucking device 52, at a place on the sheet material 44 in a non-bonded region X to moderate sucking by the second sucking device 52 so that the sheet material 44 does not attach to the non-bonded region X of the workpiece body 42.

A method for forming a layered workpiece includes a transfer step of attaching a sheet material 44 to a second mold 30 to transfer a pattern to the sheet material 44. A first mold 20 is provided with a sucking hole 22 penetrating the first mold 20 to open at a portion that comes into contact with a workpiece body 42, a second sucking device 52 that sucks the workpiece body 42 is connected to the sucking hole 22, a hole is created, before or during sucking by the second sucking device 52, at a place on the sheet material 44 in a non-bonded region X to moderate sucking by the second sucking device 52 so that the sheet material 44 does not attach to the non-bonded region X of the workpiece body 42.

Systems and methods for providing heat to a three-dimensional article are disclosed. The method can include inserting at least a portion of the article over a form. The method can further include inserting the form and article at least partially within an article container and moving the form and article into engagement with a flexible membrane where the membrane and the article container form an airtight chamber. The method can further include exposing the airtight chamber to a pressure less than atmospheric pressure to pull the membrane against at least a portion of the article and exposing the membrane to a heated deformable media.

Systems and methods for providing heat to a three-dimensional article are disclosed. The method can include inserting at least a portion of the article over a form. The method can further include inserting the form and article at least partially within an article container and moving the form and article into engagement with a flexible membrane where the membrane and the article container form an airtight chamber. The method can further include exposing the airtight chamber to a pressure less than atmospheric pressure to pull the membrane against at least a portion of the article and exposing the membrane to a heated deformable media.

A deep-drawing apparatus includes an arrangement of die plates, wherein each die plate has a plurality of frame vacuum holes and at least one female die having at least one die vacuum hole. At least one vacuum channel connects a vacuum source to the die vacuum hole of the female die and to the frame vacuum holes of the die plate. The deep-drawing apparatus includes for each die plate a closing device for closing and opening the vacuum channel. The die plate is fed a single foil sheet. The closing device opens the connecting channel at the corresponding die plate and the foil sheet is laid onto the die plate. Thereafter, the foil is held on the frame vacuum holes by a holding vacuum and is deep-drawn by a deep-drawing vacuum at the die vacuum holes in the female die. A method for the deep-drawing of foil is also disclosed.

A deep-drawing apparatus includes an arrangement of die plates, wherein each die plate has a plurality of frame vacuum holes and at least one female die having at least one die vacuum hole. At least one vacuum channel connects a vacuum source to the die vacuum hole of the female die and to the frame vacuum holes of the die plate. The deep-drawing apparatus includes for each die plate a closing device for closing and opening the vacuum channel. The die plate is fed a single foil sheet. The closing device opens the connecting channel at the corresponding die plate and the foil sheet is laid onto the die plate. Thereafter, the foil is held on the frame vacuum holes by a holding vacuum and is deep-drawn by a deep-drawing vacuum at the die vacuum holes in the female die. A method for the deep-drawing of foil is also disclosed.

A process of constructing a forming screen through metal deposition in a nonconductive preform structure to achieve a desired aspect ratio of the forming screen thickness to open area.

A method of forming an orthodontic aligner comprises: generating a teeth digital model; generating a digital dental model based thereon; assigning an identifier to the digital model; forming a dental model, marked with the identifier, corresponding to the digital model; coding a RFID chip within a pallet with the identifier; placing the dental model upon the corresponding pallet, based on the identifier, to form a model/pallet pair; placing the model/pallet pair into a model/pallet vessel; placing a biocompatible thermoplastic sheet upon a membrane stretched about a pressurizable chamber; heating the thermoplastic sheet; placing the membrane and the heated sheet adjacent the model/pallet pair; pressurizing the chamber to apply pressure to the membrane to form the sheet onto the model to form a molded aligner sheet; and cooling the molded aligner sheet to form the orthodontic aligner. The membrane creates a physical barrier between the applied pressure and the sheet.