EP3846919A2 - Laser-sintered filter, method for producing the filter, and method for ensuring fluid flow - Google Patents
Laser-sintered filter, method for producing the filter, and method for ensuring fluid flowInfo
- Publication number
- EP3846919A2 EP3846919A2 EP19765226.6A EP19765226A EP3846919A2 EP 3846919 A2 EP3846919 A2 EP 3846919A2 EP 19765226 A EP19765226 A EP 19765226A EP 3846919 A2 EP3846919 A2 EP 3846919A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- filter
- particles
- main body
- laser
- sintered
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000012530 fluid Substances 0.000 title claims abstract description 10
- 239000002245 particle Substances 0.000 claims abstract description 60
- 239000004698 Polyethylene Substances 0.000 claims abstract description 26
- 229920000573 polyethylene Polymers 0.000 claims abstract description 26
- -1 polyethylene Polymers 0.000 claims abstract description 20
- 238000004140 cleaning Methods 0.000 claims abstract description 7
- 238000000110 selective laser sintering Methods 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims description 13
- 239000000919 ceramic Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 description 7
- 239000000843 powder Substances 0.000 description 7
- 239000008187 granular material Substances 0.000 description 6
- 239000004743 Polypropylene Substances 0.000 description 5
- 229920001903 high density polyethylene Polymers 0.000 description 5
- 239000004700 high-density polyethylene Substances 0.000 description 5
- 229920001155 polypropylene Polymers 0.000 description 5
- 239000011148 porous material Substances 0.000 description 5
- 239000003570 air Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000005245 sintering Methods 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 3
- 239000000706 filtrate Substances 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000004381 surface treatment Methods 0.000 description 3
- 229920010741 Ultra High Molecular Weight Polyethylene (UHMWPE) Polymers 0.000 description 2
- 238000000149 argon plasma sintering Methods 0.000 description 2
- 238000011001 backwashing Methods 0.000 description 2
- 238000000748 compression moulding Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000009770 conventional sintering Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000009832 plasma treatment Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 230000002179 anti-microbacterial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000005094 computer simulation Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/36—After-treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
- B01D39/1638—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being particulate
- B01D39/1653—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being particulate of synthetic origin
- B01D39/1661—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being particulate of synthetic origin sintered or bonded
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0002—Organic membrane manufacture
- B01D67/0004—Organic membrane manufacture by agglomeration of particles
- B01D67/00041—Organic membrane manufacture by agglomeration of particles by sintering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0002—Organic membrane manufacture
- B01D67/0004—Organic membrane manufacture by agglomeration of particles
- B01D67/00044—Organic membrane manufacture by agglomeration of particles by plasma spraying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0002—Organic membrane manufacture
- B01D67/0004—Organic membrane manufacture by agglomeration of particles
- B01D67/00045—Organic membrane manufacture by agglomeration of particles by additive layer techniques, e.g. selective laser sintering [SLS], selective laser melting [SLM] or 3D printing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/26—Polyalkenes
- B01D71/261—Polyethylene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/26—Polyalkenes
- B01D71/262—Polypropylene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/04—Additives and treatments of the filtering material
- B01D2239/0414—Surface modifiers, e.g. comprising ion exchange groups
- B01D2239/0421—Rendering the filter material hydrophilic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/10—Filtering material manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/12—Special parameters characterising the filtering material
- B01D2239/1208—Porosity
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2205/00—Foams characterised by their properties
- C08J2205/04—Foams characterised by their properties characterised by the foam pores
- C08J2205/048—Bimodal pore distribution, e.g. micropores and nanopores coexisting in the same foam
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/24—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by surface fusion and bonding of particles to form voids, e.g. sintering
Definitions
- the invention relates to a filter for cleaning fluids, i.e. of liquids and / or gases.
- the invention also relates to a method for producing such a filter.
- the invention also relates to a method for transporting liquids
- Filters for filtering liquid medium are already known from the prior art.
- DE 10 2007 049 658 A1 discloses a filter for filtering liquid medium with a filter chamber into which at least one backwashable filter element in the form of a hollow cylindrical filter body, the peripheral wall of which can be flowed through by the medium to be filtered, forming an inflow side and an outflow side, is usable and the filter chamber at least one
- the filter body of the filter element is a stable, porous molded body made of a polyethylene granulate fused by sintering and the filter chamber additionally for a two-stage backwashing has a compressed air inlet for acting on the outflow side of the filter element with compressed air.
- Such filters are often constructed from polyethylene (PE), since polyethylene, in particular ultra-high-molecular-weight polyethylene (UHMWPE) or high-density polyethylene (HDPE), but also polypropylene (PP), have particularly good compatibility and chemical resistance have.
- Filter technologies are used in a variety of ways, for example in medical technology, vehicle technology, household technology, industrial technology or in the stationery industry. It will be maximum
- Substances can filter out the smallest particles such as blood, water, air or oil. So far, such filters have often been produced by sintering, in particular by compression molding.
- the PE particles are in powder form or as
- Polyethylene particles and a manufacturing process are provided, which eliminates the disadvantages mentioned above.
- a filter that is simple to manufacture, inexpensive to produce and that can be produced with complex geometries is to be developed.
- the object of the invention is achieved by a filter for cleaning fluids, i.e. Liquids and gases, dissolved, with a main body made of polyethylene particles, which are connected to one another by means of a generative production process in such a way that a predefined macro and micro structure is established. It is under one
- a macrostructure or a macroporosity is understood to mean a structure of the main body that arises from the construction. This means that, in particular, the macroporosity can be set in a targeted manner, for example to adjust the outer and / or Determine the internal geometry, the appearance, the surface quality and / or the grinding pattern of the main body.
- the main body can have areas in which the porosity is specifically set differently.
- the porosity of the main body can have areas in which the porosity is specifically set differently.
- Main body is not the same in every area of the main body, but varies. This means that the main body has a different porosity in first regions than in second regions of the main body, which are arranged at a distance from the first regions. The first regions and the second regions can even be adjacent to one another.
- the main body of the filter preferably has a total porosity that is between 1% and 60%. This ensures that the filter properties are good and at the same time sufficient fluid can flow through the filter.
- Undercuts / undercuts with any porosity that vary in sections, in particular in layers, can be selected.
- the filter can also be manufactured directly from a computer model, such as a CAD design, without first having to create a shape for the associated geometry, which has a favorable effect on the production costs and the production time for the filter.
- the filter can have a greater porosity on the surface than on the inside. Due to the higher permeability on the surface, the fluid to be filtered can easily get into the entire main body. In contrast to a conventional filter on which the surface is mechanically deformed outer particles is almost flat, a high surface roughness and thus a large surface-to-volume ratio can be provided.
- a targeted adjustable porosity is also understood to mean that the surface (and the interior) has a defined structure.
- the filter has a coarse-grained surface structure.
- the surface structure is sprinkled.
- the particles on the surface are undeformed, i.e. not mechanically deformed.
- the particles are rounded on the surface. This provides a particularly uneven surface that has favorable filter properties.
- the generative manufacturing process includes a laser insert.
- the polyethylene particles can be melted in a targeted manner, in particular locally, and melted together to form a body of new geometry.
- the filter is designed as a laser sintered component. As a result, the occurrence of material distortion can be largely prevented.
- polyethylene is due to its inert
- DE 10 2016 110 500 A1 discloses a method for producing an implant, wherein particles of the group consisting of ultra-high-molecular-weight polyethylene (UHMWPE) and / or high-density polyethylene (HDPE) and / or polypropylene (PP) are used a selective laser sintering process (SLS process) fused together in layers or
- UHMWPE ultra-high-molecular-weight polyethylene
- HDPE high-density polyethylene
- PP polypropylene
- the particles of the main body are distributed in layers, with the particles of one layer being interconnected by means of a laser are fused or sintered and the particles from different layers are fused or sintered together using a laser.
- different properties can be set in the main body of the filter, in particular with regard to the grain size and / or grain shape or the set porosity, from layer to layer.
- the filter can thus also be made partly solid, partly porous, so that the strength and / or filter properties can be adapted to the respective need.
- each of the layers is a porous layer and / or almost completely, i.e. is made up of more than 98% of PE particles, in particular of UHMWPE, HDPE, alternatively also of PP particles.
- a layer thickness of the main body is 70 to 300 miti, preferably about 120 miti.
- the structure of the main body can thus be varied in sufficiently small areas to be able to set almost any macroporosity of the main body.
- the particles in powder form can have a diameter between 20 and 400 ⁇ m. So that means that the as
- Particles present in powder grains for example, have a diameter between 40 and 200 pm, preferably about 130 to 155 pm. So particularly fine-grained polyethylene particles are used, which, for example, in a preceding process to coarser-grained particles, i.e. Particles with a larger diameter are melted together, depending on the particle size of the particles required for a desired (micro) porosity for the respective application.
- the pore size of the filter is preferably between 1 and 3500 pm.
- a particle size of the particles is varied within a main body of the filter. Particles of different sizes are therefore preferably used. This enables a process-related microporosity to be set.
- the particles are fused or sintered together to form a solid body or a (porous) body having porosities. This creates an interconnecting pore structure of the filter.
- a complex geometry is particularly preferred.
- the filter has flinter cuts / flinter cuts and / or flea spaces.
- geometries for the filter that could not previously be produced can also be formed in this way.
- fastening devices can also be integrally formed on the filter, so that the filter can be attached particularly easily in its end position in a filter system.
- Bombardment with frozen C02 flakes or an ultrasonic bath is carried out.
- a surface of the sintered filter or the sintered filter can also be used
- Filter systems are slightly roughened, so that, for example, flow properties are improved.
- the filter can also be subjected to surface cleaning by means of industrial air, explosion deburring and / or chemical treatment, so that advantageously any residual particles on the surface that could, for example, close pores of the filter, are removed.
- the filter is used for heat treatment
- the filter preferably contains one
- the strength and / or rigidity of the filter can thus advantageously be adjusted. For example, it is possible to have a high despite the porous structure of the filter Achieve resilience so that the filter can be used in many areas of application.
- Main body of the filter are provided with a metal doping or a ceramic doping.
- the main body of the filter is provided with a particle doping, so that it has antimicrobacterial properties. So that means that the PE particles in the process of producing the animal have particles in small amounts, i.e. ⁇ 1%, can be added to influence the properties of the filter so that, for example, germ growth, bacteria and viruses can be prevented.
- particle doping can also be provided, such as magnesium, potassium, sodium or salts.
- the filter is antistatic.
- the particles of the main body are round, potato-shaped, angular, polyhedron-shaped, sheared with a tear-off edge, shredded, chip-like and / or oval. They can therefore be designed with almost any shape, since the grain shape is significantly influenced in the process of producing the meat and the desired structure is achieved. Particularly fine grain sizes up to a maximum of 130 pm are preferably used.
- the filter is plasma treated, especially low pressure plasma treated. This has the advantage that FHphophilie and / or Flydrophobie the surface of the filter can be adjusted.
- a hydrophilic formation for example Filtration properties of the filter improved. It is particularly preferred if one side of the filter is made hydrophilic and / or another side, in particular an opposite side, is made hydrophobic.
- the object of the invention is also achieved by a method for producing a filter, the filter being produced generatively by selective laser sintering of polyethylene particles.
- Advantageous embodiments described above in connection with the filter apply in an equivalent manner to the method according to the invention.
- the filter is produced by laser sintering and then subjected to a heat treatment and / or a surface treatment and / or a low pressure plasma treatment and / or a surface cleaning.
- the filter it is also proposed to implement the following steps to manufacture the filter: providing (a certain amount, for example measured in terms of volume and / or weight) of a preferably free-flowing PE powder; Heating and pressing the PE powder to form at least one
- the PE granulate and thus the main body of the filter can predominantly or completely by mechanical
- Processing steps are provided. By pressing the PE powder into intermediate pieces and the subsequent mechanical comminution, defined and uniform particles can be used as granules, so that a production process that is as reproducible as possible is provided. This can
- a microporosity of the filter can be set in a targeted manner.
- the invention also relates to a method for liquid transport, in which a component laser-sintered from polyethylene particles with a liquid on a first Area of the component is brought into contact in order to bring the liquid to a second region of the component. Due to the targeted adjustability of the micro and / or macro structure of the laser-sintered component, the capillary effect can be used particularly suitably, so that the liquid transport can be accelerated and / or slowed down depending on the application.
- Fig. 1 is a perspective enlarged surface view of a
- FIG. 2 shows a schematic representation of a cross section of the filter from FIG. 1 to illustrate a structure of the filter
- Fig. 3 is a perspective enlarged surface view of a
- FIG. 4 shows a schematic illustration of a cross section of the filter from FIG.
- the filter 1 shows a filter 1 according to the invention for cleaning fluids.
- the filter 1 has a main body 2, which is composed of polyethylene particles 3.
- the particles 3 are connected to one another by means of a generative production process, in particular by selective laser sintering.
- the particles 3 are connected to one another in such a way that a predefined macro and micro structure is established.
- a macro structure or a macro porosity is understood to mean a structure of the main body that arises from the construction. This means that, in particular, the macroporosity can be set in a targeted manner in order, for example, to determine the outer and / or inner geometry, the appearance, the surface quality and / or the grinding pattern of the main body.
- a microstructure or a microporosity is understood to mean a structure in the interior of the main body that process-related results from the production of the filter from a mostly powdery material. This means that the microporosity is determined by process parameters such as a particle size.
- FIG. 1 A comparison of FIG. 1 with FIG. 3 clearly shows a difference between a filter 1 (FIG. 1) produced by laser sintering and a filter 4 produced by conventional sintering (compare FIG. 3).
- the laser-sintered filter 1 has a rougher surface since, in contrast to the molded filter 4, it is applied in layers, so that a defined structure on the surface is not damaged, for example deformed or squeezed by the shape.
- the filter 4 produced by conventional sintering the macro structure cannot be set in a targeted manner.
- the surface quality of the filter 1 according to the invention is independent of the shape used for producing the external geometry.
- the surface of the filter 1 has a defined structure.
- the structure is formed by the particles 3 rounded outwards.
- the surface of the filter 1 is sprinkled. This means that the particles 3 are round on the surface and not flat.
- the particles 3 are therefore mechanically undeformed / undeformed. Spaces are formed between the particles 3 which are open to the outside. This results in a large surface-to-volume ratio.
- the ratio is preferably greater than 10 * 1 / mm.
- the main body has 2 areas in which the porosity is specifically set differently.
- the porosity of the main body 2 is not the same in each area of the main body 2, but varies. This means that the main body 2 has a different porosity in the first regions than in the second
- the porosity cannot be influenced, but is rather random.
- the porosity is reduced by the production.
- the main body 2 can have a greater porosity on the surface than on the inside. Due to the higher permeability on the surface, the fluid to be filtered can easily get into the entire main body 2.
- the filter 4 from FIGS. 3 and 4 also have particles 5 which are arranged in such a way that a surface structure results. However, the particles 5 on the surface are mechanically deformed by compression molding. This closes the
- the particles 5 on the surface have flat surfaces. Accordingly, the ratio between the surface and the volume of the particles 5 is also considerably lower than in the filter 1.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Thermal Sciences (AREA)
- Plasma & Fusion (AREA)
- Health & Medical Sciences (AREA)
- Organic Chemistry (AREA)
- Polymers & Plastics (AREA)
- Medicinal Chemistry (AREA)
- Materials Engineering (AREA)
- Filtering Materials (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018121552.5A DE102018121552A1 (en) | 2018-09-04 | 2018-09-04 | Laser sintered filter, method for manufacturing the filter and method for liquid transport |
PCT/EP2019/073529 WO2020049020A2 (en) | 2018-09-04 | 2019-09-04 | Laser-sintered filter, method for producing the filter, and method for ensuring fluid flow |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3846919A2 true EP3846919A2 (en) | 2021-07-14 |
Family
ID=67874447
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19765226.6A Withdrawn EP3846919A2 (en) | 2018-09-04 | 2019-09-04 | Laser-sintered filter, method for producing the filter, and method for ensuring fluid flow |
Country Status (8)
Country | Link |
---|---|
US (1) | US20210316240A1 (en) |
EP (1) | EP3846919A2 (en) |
JP (1) | JP2021534968A (en) |
CN (1) | CN112638496A (en) |
AU (1) | AU2019336325A1 (en) |
BR (1) | BR112021004103A2 (en) |
DE (1) | DE102018121552A1 (en) |
WO (1) | WO2020049020A2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2945593T3 (en) | 2020-09-11 | 2023-07-04 | Nestle Sa | Compostable top lid structure for a beverage preparation capsule |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5527877A (en) * | 1992-11-23 | 1996-06-18 | Dtm Corporation | Sinterable semi-crystalline powder and near-fully dense article formed therewith |
JP3668283B2 (en) * | 1995-05-16 | 2005-07-06 | 三菱樹脂株式会社 | Porous multilayer plastic filter and manufacturing method thereof |
SE0201257D0 (en) * | 2002-04-25 | 2002-04-25 | Medical Invest In Sweden Ab | Improved Separation |
DE102007049658A1 (en) | 2007-10-17 | 2009-04-23 | Bürener Maschinenfabrik GmbH | Filter for filtration of liquid media including a filter chamber with at least one backflush filter element generally useful for filtration of liquid media can be easily and cost effectively cleaned |
EP2566898B1 (en) * | 2010-05-03 | 2015-11-11 | Ticona LLC | Polyethylene powders and porous articles produced therefrom |
WO2013165996A2 (en) * | 2012-05-04 | 2013-11-07 | Ticona Llc | Processes and filters for desalination of water |
JP2016521195A (en) * | 2013-03-15 | 2016-07-21 | パイロテック インコーポレイテッド | Ceramic filter |
FR3006606B1 (en) * | 2013-06-11 | 2015-07-03 | Tech Avancees Et Membranes Industrielles | PROCESS FOR MANUFACTURING FILTRATION MEMBRANES BY ADDITIVE TECHNIQUE AND MEMBRANES OBTAINED |
DE102015213932A1 (en) * | 2015-07-23 | 2017-01-26 | Krones Aktiengesellschaft | Process for producing a membrane filter element, in particular crossflow membrane filter element, in particular for beer filtration |
JP6903052B2 (en) * | 2015-10-13 | 2021-07-14 | 中国石油化工股▲ふん▼有限公司 | Polyolefin resin powder suitable for selective laser sintering and its preparation method |
US20170239726A1 (en) * | 2015-12-30 | 2017-08-24 | Mott Corporation | Porous devices made by laser additive manufacturing |
DE102016110500B4 (en) * | 2016-06-07 | 2019-03-14 | Karl Leibinger Medizintechnik Gmbh & Co. Kg | Implant fabrication by additive selective laser sintering and implant |
DE102016110501B3 (en) * | 2016-06-07 | 2017-04-06 | Karl Leibinger Medizintechnik Gmbh & Co. Kg | Granule production with rounded particles for implant production or tool production |
US10765975B2 (en) * | 2016-07-01 | 2020-09-08 | Caterpillar Inc. | Filter element and method of manufacturing a filter element |
WO2018078578A1 (en) * | 2016-10-31 | 2018-05-03 | Flsmidth A/S | Snap-on porous filter media for filter press plates |
US20180147327A1 (en) * | 2016-11-28 | 2018-05-31 | Robert C. Joyce | Printed article having a cellulose thermoplastic alloy composition and molding thereof |
CN107987344A (en) * | 2017-11-06 | 2018-05-04 | 青岛科技大学 | Selective laser sintering Quick-forming HDPE composite and preparation method |
-
2018
- 2018-09-04 DE DE102018121552.5A patent/DE102018121552A1/en not_active Withdrawn
-
2019
- 2019-09-04 WO PCT/EP2019/073529 patent/WO2020049020A2/en unknown
- 2019-09-04 US US17/272,780 patent/US20210316240A1/en not_active Abandoned
- 2019-09-04 CN CN201980057462.8A patent/CN112638496A/en active Pending
- 2019-09-04 EP EP19765226.6A patent/EP3846919A2/en not_active Withdrawn
- 2019-09-04 BR BR112021004103-6A patent/BR112021004103A2/en not_active Application Discontinuation
- 2019-09-04 JP JP2021512558A patent/JP2021534968A/en active Pending
- 2019-09-04 AU AU2019336325A patent/AU2019336325A1/en not_active Abandoned
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WO2020049020A3 (en) | 2020-05-14 |
JP2021534968A (en) | 2021-12-16 |
DE102018121552A1 (en) | 2020-03-05 |
WO2020049020A2 (en) | 2020-03-12 |
AU2019336325A1 (en) | 2021-03-25 |
CN112638496A (en) | 2021-04-09 |
WO2020049020A4 (en) | 2020-07-16 |
US20210316240A1 (en) | 2021-10-14 |
BR112021004103A2 (en) | 2021-05-25 |
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