The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 14, 2025
Filed:
Feb. 03, 2023
3dnextech S.r.l., Capannoli, IT;
Andrea Arienti, Leghorn, IT;
Maurizio Follador, Givoletto, IT;
3DNEXTECH S.R.L., Capannoli, IT;
Abstract
A method and apparatus are for surface finishing of pieces obtained by 3D printing. The piece to be treated and a liquid process plasticizer are heated together in a hermetically sealed treatment chamber up to a working temperature lower than the boiling temperature of the process plasticizer. The air/vapor mixture is maintained in continuous circulation in the chamber to keep the temperature and concentration uniform and to contact the piece with the air/vapor mixture to avoid condensate formation on the piece surface and allow process plasticizer vapors to be absorbed by the piece surface without condensate formation. Vapor exposure time is fixed depending on the desired penetration depth. A chamber has heaters, a ventilator for circulating the air/vapor mixture in the chamber to maintain uniform temperature and concentration conditions. A unit separates the process plasticizer vapors from the air/vapor mixture by condensation. A unit filters the residual air/vapor mixture.