EP0306865A1 - Moules pour la coulée de barbotine pour la fabrication des pièces moulées en matériaux céramiques - Google Patents
Moules pour la coulée de barbotine pour la fabrication des pièces moulées en matériaux céramiques Download PDFInfo
- Publication number
- EP0306865A1 EP0306865A1 EP19880114422 EP88114422A EP0306865A1 EP 0306865 A1 EP0306865 A1 EP 0306865A1 EP 19880114422 EP19880114422 EP 19880114422 EP 88114422 A EP88114422 A EP 88114422A EP 0306865 A1 EP0306865 A1 EP 0306865A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pore
- open
- mold
- carrier
- slip casting
- 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- Withdrawn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
- 239000000919 ceramic Substances 0.000 title claims abstract description 13
- 238000007569 slipcasting Methods 0.000 title claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 7
- 239000011148 porous material Substances 0.000 claims abstract description 40
- 239000012528 membrane Substances 0.000 claims description 20
- 229920000642 polymer Polymers 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 10
- 239000000843 powder Substances 0.000 claims description 9
- 239000002904 solvent Substances 0.000 claims description 9
- 238000000926 separation method Methods 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 238000005345 coagulation Methods 0.000 claims description 2
- 230000015271 coagulation Effects 0.000 claims description 2
- 238000001471 micro-filtration Methods 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims description 2
- 238000000108 ultra-filtration Methods 0.000 claims description 2
- 238000005245 sintering Methods 0.000 claims 1
- 239000011505 plaster Substances 0.000 description 7
- -1 polyethylene Polymers 0.000 description 6
- 239000002002 slurry Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000003960 organic solvent Substances 0.000 description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- 239000004952 Polyamide Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 229920002647 polyamide Polymers 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- ZHNUHDYFZUAESO-UHFFFAOYSA-N Formamide Chemical compound NC=O ZHNUHDYFZUAESO-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 229910052863 mullite Inorganic materials 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229920001059 synthetic polymer Polymers 0.000 description 2
- QYEXBYZXHDUPRC-UHFFFAOYSA-N B#[Ti]#B Chemical compound B#[Ti]#B QYEXBYZXHDUPRC-UHFFFAOYSA-N 0.000 description 1
- 229910052580 B4C Inorganic materials 0.000 description 1
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 229920000544 Gore-Tex Polymers 0.000 description 1
- 239000004695 Polyether sulfone Substances 0.000 description 1
- 239000004697 Polyetherimide Substances 0.000 description 1
- 229920000388 Polyphosphate Polymers 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 1
- 238000011001 backwashing Methods 0.000 description 1
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 239000012876 carrier material Substances 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000006063 cullet Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000012065 filter cake Substances 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 229920001477 hydrophilic polymer Polymers 0.000 description 1
- 229920001600 hydrophobic polymer Polymers 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- ZFSLODLOARCGLH-UHFFFAOYSA-N isocyanuric acid Chemical compound OC1=NC(O)=NC(O)=N1 ZFSLODLOARCGLH-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010327 methods by industry Methods 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 229920005615 natural polymer Polymers 0.000 description 1
- 238000000614 phase inversion technique Methods 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920006289 polycarbonate film Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920006393 polyether sulfone Polymers 0.000 description 1
- 229920001601 polyetherimide Polymers 0.000 description 1
- 229920006254 polymer film Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 239000001205 polyphosphate Substances 0.000 description 1
- 235000011176 polyphosphates Nutrition 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000011877 solvent mixture Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000010345 tape casting Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/26—Producing shaped prefabricated articles from the material by slip-casting, i.e. by casting a suspension or dispersion of the material in a liquid-absorbent or porous mould, the liquid being allowed to soak into or pass through the walls of the mould; Moulds therefor ; specially for manufacturing articles starting from a ceramic slip; Moulds therefor
- B28B1/261—Moulds therefor
Definitions
- the present invention relates to molds for the production of ceramic molded parts by means of the pressure slip casting process, where flowable slurries are injected into open-pore molds and the mold surface is designed in such a way that slurries with particle sizes of 0.1 to 2 ⁇ m expansion can be processed without difficulty.
- slip is understood to mean slurrying of the ceramic powder in water or organic liquids.
- surface-active substances such as organic surfactants or inorganic polyphosphates.
- the flow behavior is adjusted in a desired manner by adding further additives, such as synthetic or natural polymers that are soluble in the liquid, such as polyacrylic acid, polyacrylamides or cellulose derivatives.
- the aim is to set a high solids content with good flowability.
- pressure slip casting was proposed as a new process.
- the plaster mold is replaced by another molding material, namely open-pore sintered metal or open-pore plastic.
- the slip is first slowly pumped into the closed mold, the inner wall of the mold holding back the ceramic powder and the suspension medium passing through the mold. If the inner wall of the mold is covered with a layer of ceramic powder, the conveying speed is increased and the molded part is built up in the mold in a layer filtration analogous to the filter cake. Because of the high filtration pressure, the cullet is built up in a much shorter time than in a plaster mold at normal pressure.
- the mold When the conveyance of the slip to the mold comes to a standstill, the mold is filled.
- the maximum delivery pressure is 40 - 60 bar.
- the divisible mold is installed in a corresponding apparatus which is not the subject of this application.
- the pressure is removed and a negative pressure is applied to one mold half in order to hold the molded body on this mold half.
- the mold is then opened and the molded product is removed after the vacuum has been removed.
- the mold halves are rinsed in the opposite direction with water.
- the molds required for this process can be produced from porous sintered metal semi-finished products. For economic reasons, molds made from open-pore plastics are preferred (DOS 3 134 679). Plastic molds of this type are usually produced by foaming reactive resins. These reactive resins contain urethane and / or isocyanurate and / or urea bonds and are produced by foaming the corresponding components using conventional polyurethane technology.
- starting powder with grain sizes in the range from 0.1 ⁇ m to 5 ⁇ m are used for the production of structural ceramic parts with high temperature resistance and high strengths based on aluminum oxide, zirconium dioxide, silicon nitride, silicon carbide, mullite, sialons or other powders for structural ceramic parts.
- the pressure slip molds according to the prior art are no longer sufficient. It has also not yet been possible to produce reproducible shapes with duromer technology, the open pores of which have widths below 5 ⁇ m.
- the mold has a two-layer structure with a mechanically stable open-pore carrier with large pore sizes and a thin open-pore separation layer with a small pore size on the inside of the mold.
- the coarser-pored shape essentially serves as a support material, while the separation of ceramic powder and liquid runs on the additionally applied thin separation layer.
- separating membranes can be used as separating layers, which are used in the areas of micro- and ultrafiltration.
- Such membranes have thicknesses of up to 100 ⁇ m, consist of synthetic polymers and are produced by various processes (see Synthetic Membrane Production, Structure and Application, Angew. Chem. 94 (1982) 670-695).
- Nuclepore-type membranes with pore sizes of 0.5 to 5 ⁇ m are produced by irradiating polycarbonate or polyester films with heavy ions and then etching the areas damaged by the passage of the particles. Pores with a particularly narrow size distribution are obtained.
- monoaxially appropriate polymer films are stretched a second time perpendicular to the original stretching direction, slit-shaped to elliptical pores being created and pore sizes of 0.05 to 5 ⁇ m being able to be set.
- Such membranes are available, for example, on the basis of polyethylene, polypropylene or polytetrafluoroethylene (Celgard, Goretex or Poreflon type).
- Separating membranes can also be produced from partially crystalline polymers, such as polyethylene, polypropylene or polyamides, by dissolving the polymers in an organic solvent at elevated temperatures, knife-coating the solution into films and then allowing it to cool. On cooling, the polymer crystallizes out, leaving an open-pore structure that is filled by the solvent. After removing the solvent, there are separation membranes with pore sizes of 0.01 to 2 ⁇ m.
- partially crystalline polymers such as polyethylene, polypropylene or polyamides
- the membranes are manufactured using the phase inversion method.
- the polymer is dissolved in an organic solvent, the solution is knife-coated onto a circulating conveyor belt, part of the solvent is allowed to evaporate and the conveyor belt is then passed into a bath with non-solvent, the polymer coagulating starting at the surface of the polymer / solvent film and goes into the solid phase.
- the asymmetric membrane structure is created.
- Molds according to the invention are produced by covering the large-pore starting forms with separating membranes of the desired pore sizes. Dry membranes made of hydrophobic polymers, such as polycarbonate, polyesters or polyolefins, are heated until they become correspondingly stretchable and pressed onto the starting shape with an air stream of the same temperature, also at the same temperature level. Membranes made of hydrophilic polymers, such as polyamides or cellulose derivatives, are applied to the starting form in a moist state at room temperature.
- hydrophobic polymers such as polycarbonate, polyesters or polyolefins
- asymmetrical membranes are produced directly on the surface of the starting form, with which the best adhesion properties are achieved.
- the membrane polymer is dissolved in a water-soluble organic solvent, such as acetone, formamide or dimethylformamide or a solvent mixture in a concentration of 5 to 35% by weight, the viscous solution is degassed in vacuo and applied to the surface of the starting form. After a short evaporation time, the mold surface is sprayed with water and then immersed in water for about 10 minutes to develop the structure completely.
- a water-soluble organic solvent such as acetone, formamide or dimethylformamide or a solvent mixture in a concentration of 5 to 35% by weight
- the separating layers produced by the preferred method are so well anchored in the carrier material that they survive backwashing processes without detachment.
- the molds according to the invention are also suitable for shaping with slip based on organic solvents. Separating layers based on polysulfone, polyether sulfone, polyetherimide or polyamides are stable against aromatic-free aliphatic hydrocarbons. Subsequent crosslinking of the membrane polymer further increases the solvent resistance.
- membrane polymers with free amino or hydroxyl groups can be crosslinked by treatment with formaldehyde or epichlorohydrin.
- the molds according to the invention are used to produce molded parts made of aluminum oxide, zirconium dioxide, mullite, sialons, silicon nitride, silicon carbide, titanium boride, boron carbide or boron nitride.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Dispersion Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Producing Shaped Articles From Materials (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3730024 | 1987-09-08 | ||
| DE19873730024 DE3730024A1 (de) | 1987-09-08 | 1987-09-08 | Formen fuer das druckschlickergiessen zur herstellung von formteilen aus keramischen massen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0306865A1 true EP0306865A1 (fr) | 1989-03-15 |
Family
ID=6335473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19880114422 Withdrawn EP0306865A1 (fr) | 1987-09-08 | 1988-09-03 | Moules pour la coulée de barbotine pour la fabrication des pièces moulées en matériaux céramiques |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0306865A1 (fr) |
| JP (1) | JPS6471705A (fr) |
| DE (1) | DE3730024A1 (fr) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4233272A1 (de) * | 1991-10-04 | 1993-04-08 | Ngk Insulators Ltd | Verfahren zum giessen eines keramischen anschlussstueckverkleidungselements |
| DE19854258A1 (de) * | 1998-11-25 | 2000-05-31 | Univ Ilmenau Tech | Druckgußwerkzeug für die Formgebung von Keramik und Verfahren zu dessen Herstellung |
| WO2006056192A3 (fr) * | 2004-11-25 | 2006-08-24 | Dorst Technologies Gmbh Co Kg | Moule de coulee, notamment moule de coulee sous pression, procede pour produire un tel moule de coulee et procede de coulee basse pression |
| DE102007045806A1 (de) | 2007-09-25 | 2009-04-02 | Dorst Technologies Gmbh & Co. Kg | Gießformkomponente und Verfahren zum Herstellen einer Gießformkomponente |
| EP2216150A2 (fr) | 2009-02-05 | 2010-08-11 | Dorst Technologies GmbH & Co. KG | Composants de moule de coulage et moule de coulage |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001313493A (ja) * | 2000-04-27 | 2001-11-09 | Sony Corp | 電子部品の実装システム |
| DE102005007909A1 (de) * | 2005-02-08 | 2006-08-10 | Rennebeck, Klaus, Dr. | Vorrichtung zur Herstellung von Formteilen aus Keramik |
| DE102011117764B4 (de) | 2011-11-07 | 2015-02-05 | Technische Universität Bergakademie Freiberg | Druckschlickergießverfahren für deagglomerierte Schlicker auf der Basis keramischer, metallokeramischer oder metallischer Pulver mit Teilchengrößen im Bereich von 20 nm bis 50 µm |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB661780A (en) * | 1949-03-28 | 1951-11-28 | Sintered Products Ltd | Improvements in or relating to moulds |
| DE2808222A1 (de) * | 1978-02-25 | 1979-08-30 | Battelle Institut E V | Verfahren zur herstellung von composite-membranen |
| DE3118924A1 (de) * | 1980-05-15 | 1982-04-08 | Asahi Kasei Kogyo K.K., Osaka | Poroese membran aus thermoplastischem harz und verfahren zu ihrer herstellung |
| DE3325412A1 (de) * | 1982-08-05 | 1984-02-09 | Gelman Sciences, Inc., 48106 Ann Arbor, Mich. | Verfahren zur herstellung mikroporoeser membranen |
| DE3342823A1 (de) * | 1983-11-26 | 1985-06-05 | Seitz-Filter-Werke Theo & Geo Seitz GmbH und Co, 6550 Bad Kreuznach | Verfahren zum herstellen von filterelementen auf der basis von aromatischem polyamid |
-
1987
- 1987-09-08 DE DE19873730024 patent/DE3730024A1/de not_active Withdrawn
-
1988
- 1988-09-02 JP JP21863388A patent/JPS6471705A/ja active Pending
- 1988-09-03 EP EP19880114422 patent/EP0306865A1/fr not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB661780A (en) * | 1949-03-28 | 1951-11-28 | Sintered Products Ltd | Improvements in or relating to moulds |
| DE2808222A1 (de) * | 1978-02-25 | 1979-08-30 | Battelle Institut E V | Verfahren zur herstellung von composite-membranen |
| DE3118924A1 (de) * | 1980-05-15 | 1982-04-08 | Asahi Kasei Kogyo K.K., Osaka | Poroese membran aus thermoplastischem harz und verfahren zu ihrer herstellung |
| DE3325412A1 (de) * | 1982-08-05 | 1984-02-09 | Gelman Sciences, Inc., 48106 Ann Arbor, Mich. | Verfahren zur herstellung mikroporoeser membranen |
| DE3342823A1 (de) * | 1983-11-26 | 1985-06-05 | Seitz-Filter-Werke Theo & Geo Seitz GmbH und Co, 6550 Bad Kreuznach | Verfahren zum herstellen von filterelementen auf der basis von aromatischem polyamid |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4233272A1 (de) * | 1991-10-04 | 1993-04-08 | Ngk Insulators Ltd | Verfahren zum giessen eines keramischen anschlussstueckverkleidungselements |
| US5474724A (en) * | 1991-10-04 | 1995-12-12 | Ngk Insulators, Ltd. | Method for molding a ceramic port liner |
| DE4233272C2 (de) * | 1991-10-04 | 1998-12-24 | Ngk Insulators Ltd | Verfahren zum Gießen eines keramischen Anschlußstückverkleidungselements |
| DE19854258A1 (de) * | 1998-11-25 | 2000-05-31 | Univ Ilmenau Tech | Druckgußwerkzeug für die Formgebung von Keramik und Verfahren zu dessen Herstellung |
| WO2006056192A3 (fr) * | 2004-11-25 | 2006-08-24 | Dorst Technologies Gmbh Co Kg | Moule de coulee, notamment moule de coulee sous pression, procede pour produire un tel moule de coulee et procede de coulee basse pression |
| DE102007045806A1 (de) | 2007-09-25 | 2009-04-02 | Dorst Technologies Gmbh & Co. Kg | Gießformkomponente und Verfahren zum Herstellen einer Gießformkomponente |
| EP2216150A2 (fr) | 2009-02-05 | 2010-08-11 | Dorst Technologies GmbH & Co. KG | Composants de moule de coulage et moule de coulage |
| DE102009007670A1 (de) | 2009-02-05 | 2010-08-12 | Dorst Technologies Gmbh & Co. Kg | Gießformkomponente, Gießform und Verwendung einer solchen Gießform |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6471705A (en) | 1989-03-16 |
| DE3730024A1 (de) | 1989-03-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 19881217 |
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| AK | Designated contracting states |
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