Abstract: The invention relates to a method for applying a material containing a meltable polymer comprising the step of applying a filament of the at least partially molten material from a discharge opening of a discharge element onto a substrate. The meltable polymer has the following properties: —a melting point (DSC, differential scanning calorimetry; second heating with a heating rate of 5° C./min) in a range from ?40° C. to ?120° C.; —a glass transition temperature (DMA, dynamic mechanical analysis in accordance with DIN EN ISO 6721-1:2011) in a range from ??70° C. to ?30° C.; —a storage modulus G? (parallel plate oscillation viscometer in accordance with ISO 6721-10:2015 at a frequency of 1/s) at 20° C. above the melting point of ?1·104 Pa?—a storage modulus G? (parallel plate oscillation viscometer in accordance with ISO 6721-10:2015 at a frequency of 1/s) at 10° C. below the melting point with prior heating to a temperature of 20° C. above the melting point and subsequent cooling with a cooling rate of 1° C.

Abstract: The invention relates to a method for producing a three-dimensional object, the outer surface of which has at least one surface section that is generated in that, by means of an additive production method (layer-building forming method), initially a surface section is produced on a flat base plate (5) in two-dimensional form, comprising the following steps: I) applying at least one curable polymer or curable reaction resin with a respective elastic modulus according to DIN 53504 (effective: 18 Apr.

Abstract: 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 (10) 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 (20, 30) running oppositely with respect to one another, and the curve pairs comprise portions of maximum spacing to one another (40, 41, 60, 61) and portions of minimum spacing to one another (50, 51, 70, 71).

Abstract: The invention relates to a method for the mechanical testing of a structure (1, 10) formed as one part, comprising the following steps: a) identifying a sub-element (2, 11) in the structure (1, 10) formed as one part for generating a test element (3, 3?) that is intended to undergo mechanical testing, wherein the sub-element (2, 11) only represents a portion of the structure (1, 10) formed as one part, b) determining the spatial-geometrical structure of the sub-element (2, 11), c) generating the test element (3, 3?) on the basis of the spatial-geometrical structure of the sub-element (2, 11) and at least in part or in full by way of a 3D printing process, d) carrying out at least one mechanical test on the test element (3, 3?) generated.

Abstract: 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 p

Abstract: The invention relates to a method for producing an object comprising the the following steps: producing a shell, which surrounds a volume for holding a fluid, by means of an additive manufacturing method from a construction material; providing a reaction mixture comprising a polyisocyanate component and a polyol component in the volume and allowing the reaction mixture to react in the volume such that a polymer present at least partly in the volume is obtained. The reaction mixture has a setting time of ?2 minutes. An object that can be obtained by means of a method according to the invention comprises a shell, which defines a volume located within the shell, and a foam, which completely or partly fills the volume.

Abstract: The invention relates to a print head (100) for an additive fused deposition modelling method having a thermoplastic construction material, comprising:—at least one inlet (10) for receiving a construction material (11) into the print head;—at least one melt region, for melting the construction material (11), which is arranged downstream of the inlet (10) and is fluidically connected, at least temporarily, to the inlet (10); and—at least one first outlet (30) that is fludicially connected, at least temporarily, to the melt region (20), for discharging melted construction material (12) out of the melt region (29) at a first discharge rate; wherein—the print head (100) also comprises at least one second outlet (40) that is fluidically connected, at least temporarily, to the melt region (20) for discharging melted or non-melted construction material (11, 12) out of the melt region (20) at a second discharge rate; and—the first discharge rate can be influenced by a first discharge rate influencing device (50) for

Abstract: A method for producing an object with layers of different materials in an additive manufacturing process comprises the following steps: I) providing a construction material heated at least in part to a temperature above its glass transition temperature on a substrate, so that a layer of the construction material is obtained which corresponds to a first selected cross section of the object; II) providing a construction material heated at least in part to a temperature above its glass transition temperature on a previously provided layer of the construction material, so that another layer of the construction material is obtained which corresponds to another selected cross section of the object and which is connected to the previously provided layer; repeating step II) until the object is formed.

Abstract: It is a feature of a porous body comprising a three-dimensional network of node points joined to one another by struts, and a void volume present between the struts, that the struts have an average length of ?200 ?m to ?50 mm, the struts have an average thickness of ?100 ?m to ?5 mm, and that the porous body has a compression hardness (40% compression, DIN EN ISO 3386-1: 2010-09) in at least one spatial direction of ?10 to ?100 kPa. The porous body according to the invention combines the advantages of a conventional mattress or cushion with ventilatability which results from its porous structure and is not achievable in conventional foams. The invention further relates to a method of producing such a porous body and to an apparatus comprising said body for supporting and/or bearing a person.

Abstract: The invention relates to a method for producing a visco-elastic damping element comprising at least one visco-elastic spring element, characterized in that the visco-elastic spring element is structured from at least one visco-elastic material having a tan ? of at least 0.5, determined according to DIN 53535: 1982-03, and produced by means of a 3D printing method. The invention further relates to a visco-elastic damping element, which is produced or can be produced according to said method, and to a solid body comprising or consisting of a plurality of damping elements.

Abstract: It is a feature of a porous body (10, 20) comprising a three-dimensional network of node points (200) joined to one another by struts (100), and a void volume (300) present between the struts (100), that the struts (100) have an average length of ?200 to ?50 mm, the struts (100) have an average thickness of ?100 ?m to ?5 mm, and that the porous body has a compression hardness (40% compression, DIN EN ISO 3386-1: 2010-09) in at least one spatial direction of ?10 to ?100 kPa. The porous body according to the invention combines the advantages of a conventional mattress or cushion with ventilatability which results from its porous structure and is not achievable in conventional foams. The invention further relates to a method of producing such a porous body (10, 20) and to an apparatus comprising said body (10, 20) for supporting and/or bearing a person.

Abstract: A process for manufacturing an article comprises the steps of: I) applying a filament of an at least partially fused construction material to a support so as to obtain a layer of the construction material which corresponds to a first selected cross-section of the article; II) applying a filament of the at least partially fused construction material to a previously applied layer of the construction material so as to obtain a further layer of the construction material which corresponds to a further selected cross-section of the article and which is bonded to the previously applied layer; and III) repeating step II) until the article is formed. At least steps II) and III) are carried out in a chamber and the construction material comprises a fusible polymer. The fusible polymer has a fusion range (DSC, differential scanning calorimetry; 2nd heating at a heating rate of 5 K/min.) of ?20° C. to ?100° C.

Abstract: A process for manufacturing an article comprises the steps of: applying a layer that consists of particles to a target area; allowing, in a chamber, energy to act on a selected portion of the layer, according to a cross-section of the article, so that the particles in the selected portion are bonded, and repeating the steps of applying and allowing energy to act for a plurality of layers so that the bonded portions of the adjacent layers are bonded to form the article, at least part of the particles comprising a fusible polymer. The fusible polymer has a fusion range (DSC, differential scanning calorimetry; 2nd heating at a heating rate of 5 K/min.) of ?20 ° C. to ?100 ° C. The fusible polymer further has a complex viscosity \?*\ (determined by viscosity measurement in the melt using a plate-plate oscillating viscometer according to ISO 6721-10 at 100° C. and a shear rate of 1/s) of ?10 Pas to ?1000000 Pas. Finally, the temperature inside the chamber is ?50° C.

Abstract: The invention relates to a method for producing a three-dimensional object, the outer surface of which comprises at least one surface segment that is created in that a surface segment in two-dimensional form is first produced on a flat base plate by means of an additive manufacturing method (layer-building shaping method), comprising the following steps: I) applying at least one curable polymer or curable reaction resin in flowable form as material webs to a flat base plate by means of a layer-building shaping method in order to create a first layer; II) applying a second layer to the first layer, which second layer is created by means of the same layer-building shaping method as in step I); III) optionally applying 1 to 198 further layers, which are created in accordance with step II), wherein in each case a new layer is applied to the previous layer; IV) curing the layers; V) detaching the cured surface segment from the flat base plate; and VI) shaping the cured surface segment into a three-dimensional obje

Abstract: The invention relates to a method for producing a three-dimensional object, the outer surface of which has at least one surface section that is generated in that, by means of an additive production method (layer-building forming method), initially a surface section is produced on a flat base plate (5) in two-dimensional form, comprising the following steps: I) applying at least one curable polymer or curable reaction resin with a respective elastic modulus according to DIN 53504 (effective: 18 Apr.

Abstract: It is a feature of a porous body comprising a three-dimensional network of node points joined to one another by struts, and a void volume present between the struts, that the struts have an average length of ?200 ?m to ?50 mm, the struts have an average thickness of ?100 ?m to ?5 mm, and that the porous body has a compression hardness (40% compression, DIN EN ISO 3386-1: 2010-09) in at least one spatial direction of ?10 to ?100 kPa. The porous body according to the invention combines the advantages of a conventional mattress or cushion with ventilatability which results from its porous structure and is not achievable in conventional foams. The invention further relates to a method of producing such a porous body and to an apparatus comprising said body for supporting and/or bearing a person.

Abstract: It is a feature of a use of an elastic polymer for production of a porous body (in an additive manufacturing method that the porous body comprises a three-dimensional network of node points joined to one another by struts, and a void volume present between the struts, where the struts have an average length of ?200 ?m to ?50 mm and the struts (100) have an average thickness of ?100 ?m to ?5 mm. The polymer here is an elastomer selected from the following group: thermoset polyurethane elastomers (PUR), thermoplastic copolyamides (TPA), thermoplastic copolyesters (TPC), thermoplastic olefin-based elastomers (TPO), styrene block copolymers (TPS), thermoplastic urethane-based elastomers (TPU), crosslinked thermoplastic olefin-based elastomers (TPV), thermoplastic polyvinyl chloride-based elastomers (PVC), thermoplastic silicone-based elastomers and a combination of at least two of these elastomers.

Abstract: A method for producing an elastomer-based film stack actuator may include: a starting process of: providing an elastomer film having an elastomer layer and two cover layers, and removing one of the two cover layers to produce a delaminated film; a stacking process, of: applying a layer of electrodes to the elastomer layer of the delaminated film assembly, laminating an additional delaminated elastomer film on the film assembly having electrodes, and removing one of the two cover layers from the laminated film assembly to produce a delaminated film assembly; and a finalization process of: contacting the electrodes of the film assembly produced by the stacking process, separating the stacking actuators of the film assembly produced by the stacking process, and encapsulating the separated stacking actuators. The stacking process steps may be repeated by using the delaminated film assembly of the final step in the initial step.