Compositions for three-dimensional printing of solid objects

Details Compositions for three-dimensional printing of solid objects Compositions for three-dimensional printing of solid objects

C - Chemistry, Metallurgy

09

J

C09J 4/00 (2006.01) B29C 67/24 (2006.01) B41J 2/01 (2006.01) C08F 2/50 (2006.01) C08J 5/12 (2006.01) C09J 4/06 (2006.01) C09J 11/06 (2006.01)

Patent

CA 2405539

A three-dimensional printing materials system and method can produce both appearance models and small numbers of functional parts in an office environment. The method can include building cross-sectional portions of a three-dimensional article, and assembling the individual cross-sectional areas in a layer-wise fashion to form a final article. The individual cross- sectional areas can be built by using an ink-jet printhead to deliver an aqueous solvent or binder to an adhesive particulate mixture, causing the particles of the mixture to adhere together, and to previous cross-sectional areas. The binder can include at least one of nonaqueous organic monomeric compound, anionically ionizable polymer, cationic polymer, polymer, waterborne colloid, or inorganic solute.

L'invention porte sur un système de matériaux d'impression en 3D et le procédé associé permettant d'obtenir dans des bureaux des modèles et de petites séries de pièces fonctionnelles. Ledit procédé consiste à élaborer des sections transversales d'articles et à les assembler par couches pour créer l'article final. Les différentes sections transversales peuvent être obtenues à l'aide d'une tête d'impression à jet d'encre en projetant un solvant aqueux ou un liant sur un mélange de particules adhésives pour faire adhérer les particules du mélange les unes aux autres et à la section transversale précédente. Le liant peut comporter au moins un composé monomère organique non aqueux, un polymère anioniquement ionisable, un polymère cationique, un colloïde aqueux, ou un soluté minéral.

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