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公开(公告)号：US20240116109A1
公开(公告)日：2024-04-11
申请号：US17768879
申请日：2020-10-13
申请人： BASF SE
IPC分类号： B22F10/18 , B22F10/64 , B22F12/13 , B22F12/53 , B28B1/00 , B29C64/118 , B29C64/255 , B29C64/321 , B33Y10/00 , B33Y30/00 , B33Y40/20 , B33Y70/10
CPC分类号： B22F10/18 , B22F10/64 , B22F12/13 , B22F12/53 , B28B1/001 , B29C64/118 , B29C64/255 , B29C64/321 , B33Y10/00 , B33Y30/00 , B33Y40/20 , B33Y70/10 , B22F2301/35 , B22F2998/10 , B29K2105/251
摘要： The present invention relates to a process for producing a three-dimensional (3D) object by employing a three-dimensional (3D) printing process wherein a granulate having an particle size in the range of 0.2 to 1 mm is used as a starting material to be printed within said 3D printing process, employing a 3D extrusion printer. In one preferred embodiment, the process according to the present invention is employed for producing a 3D greenbody. The invention further relates to 3D objects as such and the corresponding processes for obtaining such 3D objects, in particular a 3D green body, a 3D brown body and a 3D sintered body.
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2.发明公开公开(公告)号：US20240092000A1
公开(公告)日：2024-03-21
申请号：US17768500
申请日：2020-10-13
申请人： BASF SE
发明人： Reinhard JAKOBI , Angelika HOMES , Susanne ZEIHER , Daniel LEUTZ , Natascha Manuela MEIERHOEFER , Rafael GIMENEZ CASAT , Marcus IMO , Sascha Tim SCHWENDY , Leonhard ULLRICH
CPC分类号： B29C45/1634 , B29C45/20 , B29C45/50 , B33Y80/00 , B29K2995/0021 , B29L2031/7132
摘要： Disclosed herein is a process for producing marbled moldings, where a first molding compound and at least one further molding compound are injected from an injection unit of a screw injection molding machine into an injection mold,
where the injection unit includes a barrel, a screw having a screw tip and a nozzle where the screw is rotatable and is disposed in the barrel so as to be movable between a forward position and a backward position, with a smaller distance between the screw tip and the nozzle in the forward position than in the backward position,
and where the first molding compound includes a first polymer compound and a first colorant, and the at least one further molding compound includes a further polymer compound and optionally at least one further colorant.
Further disclosed herein is an apparatus for production of marbled moldings, and a process for producing the apparatus.-
公开(公告)号：US20230347583A1
公开(公告)日：2023-11-02
申请号：US17785884
申请日：2020-12-02
申请人： BASF SE
IPC分类号： B29C64/165 , B29C64/209 , B29C64/245
CPC分类号： B29C64/165 , B29C64/209 , B29C64/245 , B33Y10/00
摘要： The present invention relates to a process for the production of a three-dimensional green body (GB) by a three-dimensional (3D) printing process, in which at least one feedstock, a built chamber and a three-dimensional extrusion printer (3D printer) containing at least one nozzle are employed. In this process, the at least one feedstock is fed into the 3D printer containing the at least one nozzle, wherein the at least one feedstock comprises at least one binder (B) and at least one inorganic powder (IP), and wherein the at least one binder (B) comprises at least one polyoxymethylene (POM). The at least one feedstock is then heated inside the 3D printer and extruded through the at least one nozzle in order to obtain at least one extruded strand. From the at least one extruded strand, the three-dimensional green body (GB) is formed layer by layer on a base plate (BP) located in the build chamber, wherein the base plate (BP) comprises the at least one binder (B) and optionally the at least one inorganic powder (IP). The three-dimensional green body (GB) and the base plate (BP) are removed from the build chamber, wherein the three-dimensional green body (GB) is attached to the base plate (BP). The present invention further relates to a three-dimensional green body (GB) prepared by this process and to a three-dimensional sintered body prepared from the three-dimensional green body (GB).
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