US 11,305,458 B2 · Process for producing a cured 3D product

Abstract

The invention is directed to a process for producing a cured 3D product comprising the following steps: (a) providing a form negative mould of the 3D product comprising of one or two formed plastic sheets as obtained by thermoforming corresponding with the shape of the 3D product; (b) adding a liquid curable composition to the mould such that the inner surface of the mould is covered by the curable composition; and (c) solidifying the curable composition wherein a solidified layer or body is formed having the shape of the 3D product; wherein the cured 3D product is a radiation cured 3D product; and wherein the step (c) a radiation curable composition is solidified by radiation through the plastic sheet of the mould to form a solidified layer having the shape of the 3D product.

Claims12

Dependent claims

Process for producing a radiation cured 3D product comprising the following steps:

(a) providing a form negative mould of the 3D product comprising of one or two formed plastic sheets as obtained by thermoforming corresponding with the shape of the 3D product,
(b) adding a liquid radiation curable composition to the form negative mould such that the inner surface of the form negative mould is covered by the liquid radiation curable composition, and
(c) solidifying the liquid radiation curable composition by radiation through the formed plastic sheet of the form negative mould to form a solidified layer or body having the shape of the radiation cured 3D product.

Dependencies are inferred from the claim text.

Facts

Application

16/712,275Filed 12 Dec 2019 · us provisional application

Priority

17 Dec 2018

Published

US 2020/0189146 A118 Jun 2020

Granted

19 Apr 2022

Term ends

Not estimatedThe source records don’t support an estimate.

Classification53 codes

B28B 7/342
Moulds, cores, or mandrels of special material, e.g. destructible materials: which are at least partially destroyed, e.g. broken, molten, before…
B22F 10/12
Formation of a green body: by photopolymerisation, e.g. stereolithography [SLA] or digital light processing [DLP]
B28B 1/30
Producing shaped prefabricated articles from the material: by applying the material on to a core or other moulding surface to form a layer thereon
B28B 7/0029
Moulds; Cores; Mandrels: moulds or moulding surfaces not covered by B28B7/0058 - B28B7/36 and B28B7/40 - B28B7/465, e.g. moulds assembled from…

Process for producing a cured 3D product

Life of this patent

Process for producing a cured 3D product

Life of this patent

Abstract

Claims12