Method for treating the surface of shaped parts
AssigneeDyeMansion GmbH
InventorAlena Folger
Life of this patent
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Abstract
A method is provided for treating the surface of a shaped melded part produced with a plastic having ester, ketone and/or ether bonds. The plastic is selected from the group including a polymer, copolymer, polymer blend and combinations of the same. The method includes a pretreatment step for cationically modifying the surface of the melded shaped part. The cationic modification is carried out with a reactant dissolved in a solvent and having one or more amine, imine and/or amide groups.
Claims31
A method for treating the surface of a shaped part produced in a 3D printing process with a plastic having ester, ketone and/or ether bonds, the plastic being selected from the group comprising a polymer, copolymer, polymer blend and combinations thereof, the method comprising a pretreatment step (VS) for cationically modifying the surface of the shaped part, with cationic modification meaning the binding of functional groups, wherein, in the pretreatment step, the shaped part is placed in a pretreatment solution for a predetermined pretreatment time, the pretreatment solution comprising at least:
- a first solvent and
- a reactant which is dissolved in the first solvent and has one or more amine, imine and/or amide groups,
- wherein the shaped part is 3D printed, and
- wherein the pretreatment solution is buffered to a predetermined pH value, the predetermined pH value being between 7 and 14.
A method for dyeing a shaped part produced in a 3D printing process with a plastic having ester, ketone and/or ether bonds, the plastic being selected from the group comprising a polymer, copolymer, polymer blend and combinations thereof, the method comprising
- a pretreatment step (VS) for cationically modifying the surface of the shaped part, with cationic modification meaning the binding of functional groups, and
- a dyeing step (FS), carried out after the pretreatment step, for dyeing the surface of the shaped part
- wherein
- in the pretreatment step, the molded part is placed in a pretreatment solution for a predetermined pretreatment time, the pretreatment solution comprising at least:
- a first solvent and
- a reactant which is dissolved in the first solvent and has one or more amine, imine and/or amide groups,
- wherein the shaped part is 3D printed, and
- wherein the pretreatment solution is buffered to a predetermined pH value, the predetermined pH value being between 7 and 14, and
- in the dyeing step, the shaped part is placed in a dyeing solution for a predetermined dyeing time, the dyeing solution comprising at least
- a second solvent and
- a dye dissolved in the second solvent.
Dependencies are inferred from the claim text.