Stratasys, Inc.

Covestro Deutschland Ag

Covestro Intellectual Property Gmbh & Co. Kg

Jonas Kuenzel

Dirk Achten

Thomas Buesgen

Nicolas Degiorgio

Roland Wagner

Ting Liu

Martin Melchiors

Harald Kraus

Wolfgang Arndt

Michael Kessler

Joerg Buechner

Joerg Tillack

Fabian Schuster

Thomas Büsgen

Peter Reichert

Bettina Mettmann

Levent Akbas

Maximilian Wolf

Ralf Rott

Jari Birth

The present invention relates to a method of producing an article, comprising the step of producing the article by means of an additive manufacturing method from a build material comprising an aromatic polycarbonate and interference pigments and/or pearlescent pigments from the group of the metal oxide-coated micas. The invention likewise relates to an article obtainable by the method. The build material further comprises ≥0.05% by weight to ≤3% by weight of anhydride-modified α-olefin polymer.

Additive manufacturing process using a building material that contains metal-oxide coated mica

The present invention relates to a fibre-reinforced 3D-printed elastic product (1, 3, 4, 7, 10, 12), wherein the product comprises a weight proportion of ≥50% of a polymer having a mean molecular weight of ≥5000 g/mol, measured by means of GPC, and a weight proportion of ≥0.5% and ≤20% of one or more fibres having an aspect ratio of ≥100 and a length of ≥3 cm and ≤1000 cm, the product being produced at least in part by means of an FFF (Fused Filament Fabrication) method, and the product having a tensile modulus of ≥1.5 GPa in the region of the fibre reinforcement and in the direction of the fibre symmetry axis. The product also has a tensile modulus, measured according to DIN EN ISO 527-1, of ≤1.2 GPa in the region of the fibre reinforcement and perpendicular to the fibre symmetry axis, and has a yield strength of >5%, measured according to DIN EN ISO 527-1, perpendicular to the fibre symmetry axis.

3D-printed elastic products reinforced by means of continuous fibres and having asymmetrical elastic properties

The present invention relates to a method for functionalizing a workpiece surface, comprising the following steps: a) providing a workpiece; b) providing a film; c) functionalizing at least one film side by the location-selective application of a functionalization composition comprising a polymer material onto part of the film side in one or more layers by means of a 3D printing process; d) creating an integrally bonded or interlocking connection between the workpiece surface and the film functionalized in step c) by bringing the film into contact with at least part of the workpiece surface, wherein the integrally bonded or interlocking connection to the workpiece surface is achieved with a functionalized film side. The invention further relates to workpieces having a surface functionalized according to the invention.

Film areas functionalized by means of 3D printing for finishing workpiece surfaces

A deformable body, wherein the body is constructed from a multiplicity of layers of a polymer construction material and in which a construction direction is defined perpendicular to the layers. The body preferably comprises layers with a multiplicity of curve pairs () which are formed by the construction material and which run in the same direction as one another, the curve pairs comprise in each case two periodic curves () running oppositely with respect to one another, and the curve pairs comprise portions of maximum spacing to one another () and portions of minimum spacing to one another (). In one part of the layers, in adjacent curve pairs (), at least one portion of maximum spacing () of one curve is connected to a portion of maximum spacing () of an adjacent curve, in a further part of the layers, in adjacent curve pairs (), at least one portion of maximum spacing () of one curve is not connected to a portion of maximum spacing () of an adjacent curve, in a further part of the layers, in adjacent curve pairs (), at least a part of the portions of minimum spacing () are connected to one another, and in a further part of the layers, in adjacent curve pairs (), at least a part of the portions of minimum spacing () are not connected to one another. The invention also relates to a method for producing the body and to a device for supporting and/or bearing a person having the body according to the invention. The boy may be used inter alia as a mattress or as a vehicle seat.

Deformable body and method for the production thereof

The present invention relates to a method for producing a treated object, comprising the steps of: applying a layer of particles to a target area; applying a liquid binder to a selected portion of the layer in accordance with a cross-section of the object, so that the particles in the selected portion are bonded; repeating the steps of applying a layer of particles and applying a binder for a plurality of layers so that the bonded portions of the adjacent layers are bonded to form an object, wherein at least a part of the particles comprises a meltable polymer. A binder which cures by cross-linking is preferably selected as the binder. The obtained object is at least partially contacted with a liquid heated to &#x2265;T or with a powder bed heated to &#x2265;T in order to obtain the treated object. T represents a temperature of &#x2265;25&#xb0; C., the liquid does not represent a solvent or a reaction partner for the binder present in the object and the meltable polymer, and the powder bed is different from the particles of the meltable polymer. The invention also relates to a treated object that can be obtained by the method according to the invention.

Method for producing a treated, 3D printed object

A method for producing an object from a filamentary building material in an additive fused deposition modelling process, comprising the steps of: providing the building material; transporting the building material into a printhead at a feed rate for the building material, wherein the building material is transported between a driven drive wheel and a second wheel; melting the building material by means of a heating device in the printhead; discharging the molten building material to a discharge location, corresponding to a selected cross section of the object to be produced, at a discharge rate through an orifice of the printhead, with relative movement of the printhead in relation to the discharge location at a predetermined speed to movement along a predetermined path, wherein the path has at each location a curvature that can assume a positive value, zero or a negative value; wherein a control unit controls at least the drive of the drive wheel, the heating device in the printhead and the movement of the printhead in dependence on the curvature of the printing path. Likewise disclosed is a control unit for use in an installation for carrying out an additive fused deposition modelling process with a filamentary building material.

3-D printing process with path-dependent control of the printing path

The invention relates to a method for producing an object, comprising the step of producing the object from a construction material by means of an additive manufacturing process, wherein the construction material comprises a plurality of thermoplastic polyurethane materials. The materials differ by at least one mechanical property such as the shore hardness or the elongation at break. The invention also relates to an object obtained according to said method.

Additive manufacturing process using several thermoplastic polyurethanes

A method of applying a material comprising a fusible polymer comprises the step of: The fusible polymer has the following properties: wherein the filament, during the application process, has an application temperature of &#x2265;100&#xb0; C. above the melting point of the fusible polymer for &#x2264;20 minutes. There are still free NCO groups in the material including the fusible polymer.

Method for applying a material containing a meltable polymer with free NCO groups

A method of applying a material comprising a fusible polymer comprises the step of: The fusible polymer has the following properties: There are furthermore blocked NCO groups present in the material comprising the fusible polymer.

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Leverkusen, Germany

Jonas Kuenzel