Signify Holding B.v.

Stefan Willi Julius Gruhlke

Rifat Ata Mustafa Hikmet

Ties Van Bommel

Loes Johanna Mathilda Koopmans

The invention provides a method for producing a 3D item by means of fused deposition modelling, the method comprising a 3D printing stage comprising layer-wise depositing 3D printable material, to provide the 3D item comprising 3D printed material, wherein the 3D item comprises layers of 3D printed material, wherein the 3D printable material comprises thermoplastic material, wherein during at least part of the 3D printing stage the 3D printable material further comprises porous inorganic particles embedded in the thermoplastic material, wherein the porosity of the inorganic particles is in the range 5-60 vol. %, and wherein the inorganic particles () have an open porosity. The invention also comprises the product resulting from above method.

Method for including voids in polymer filaments for FDM printing

The invention provides a method for producing a 3D item () by means of fused deposition modeling, the method comprising a 3D printing stage comprising layer-wise depositing an extrudate () comprising 3D printable material (), to provide the 3D item () comprising 3D printed material (), wherein the 3D item () comprises layers () of 3D printed material (), wherein the method further comprises controlling a first temperature Tof the 3D printable material () within a first temperature range, wherein the 3D printable material () comprises a thermoplastic host material () and a dopant material () in the range of 1-20 vol %, the dopant material () comprising polymeric flake-like particles having a metal coating, wherein the 3D printable material () has an optical property that irreversibly changes from a low-temperature optical property to a high-temperature optical property when increasing a temperature of the 3D printable material (201) over a change temperature T, the optical property being selected from the group consisting of reflection, transmission, luminescence, absorption, and color, wherein the change temperature Tis within the first temperature range, wherein during at least a first part of the 3D printing stage the first temperature Tis below the change temperature T, and wherein during at least a second part of the 3D printing stage the first temperature Tis above the change temperature T.

FDM printed item with dopant material

The invention provides a method for 3D printing a 3D item (), the method comprising providing a filament () of 3D printable material () and printing during a printing stage said 3D printable material (), to provide said 3D item () comprising 3D printed material (), wherein the 3D printable material () further comprises particles (), wherein the particles () comprise one or more of glass and mica, wherein the particles () have a coating (), wherein the coating comprises one or more of a metal coating and a metal oxide coating, and wherein the particles () have a longest dimension (A) having an longest dimension length (L) selected from the range of 10 μm-2 mm, and wherein the particles have an aspect ratio of at least 10.

3D printing of a reflector using polymer filled with metal coated glass or mica particles and reflector obtainable thereby

A method for 3D printing a 3D item (), the method comprising (i) providing 3D printable material () comprising particles () embedded in the 3D printable material (), wherein the particles () have a longest dimension length L, a shortest dimension length L, and an aspect ratio AR defined as the ratio of the longest dimension length Land the shortest dimension length L, and (ii) depositing during a printing stage 3D printable material () to provide the 3D item () to provide layers () of the 3D printed material () with a layer height H, wherein AR>4 and H/L<1.

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BAESWEILER, Germany

Stefan Willi Julius Gruhlke