Patent EP0248432A2 successfully refreshed from Google Patents.
EP0248432A2
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EP
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Process for preparing a slender or thin ceramic green body
Assignee: Mitsubishi Chemical Corp
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Filing: 1987-06-04
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Granted: —
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Expires: 2007-06-04
Abstract
Abstract A process for preparing a slender or thin ceramic green body, which comprises discharging a raw material slurry comprising a ceramic powder raw material, a binder and a solvent from a discharge outlet in a slender orthin shape, and then contacting it with a solidifying liquid composed of a liquid in which the solvent is soluble and the ceramic powder raw material and the binder are insoluble or hardly soluble so that the solvent in the slurry is dissolved and removed to form the green body.
Inventors
- 👤 Yukio Chida
- 👤 Tetsuhiko Nishimura
- 👤 Yasuo Oguri
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 02:58
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/45; C04B35/622; C04B35/62227; H; H10; H10N; H10N30/00; H10N30/01; H10N30/08; H10N30/084; H10N30/702; H10N30/09; H10N30/093; H10N30/097
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
87 words
A process for preparing a slender or thin ceramic green body, which comprises discharging a raw material slurry comprising a ceramic powder raw material, a binder and a solvent from a discharge outlet in a slender or thin shape, and then contacting it with a solidifying liquid composed of a liquid in which the solvent is soluble and the ceramic powder raw material and the binder are insoluble or hardly soluble so that the solvent in the slurry is dissolved and removed to form the green body.
Claim 2
Dependent Claim
87 words
A process for preparing a slender or thin ceramic green body, which comprises discharging a raw material slurry comprising a ceramic powder raw material, a binder and a solvent from a discharge outlet in a slender or thin shape, and then contacting it with a solidifying liquid composed of a liquid in which the solvent is soluble and the ceramic powder raw material and the binder are insoluble or hardly soluble so that the solvent in the slurry is dissolved and removed to form the green body.
Claim 3
Dependent Claim
69 words
The process according to Claim 1, wherein the raw material slurry is composed of from 40 to 90% by weight of the ceramic powder raw material, from 2 to 30% by weight of the binder and from 8 to 60% by weight of the solvent. 3, The process according to Claim 1, wherein the ceramic powder raw material has an average particle size of not larger than 20 µm.
Claim 4
Dependent Claim
26 words
The process according to Claim 1, wherein the time for the contact of the raw material slurry with the solidifying agent is at least one second.
Claim 5
Dependent Claim
24 words
The process according to Claim 1, wherein the temperature of the solidifying-liquid is within a range of from room temperature to 60° C .
Claim 6
Dependent Claim
31 words
The process according to Claim 1, wherein the raw material slurry is discharged into the solidifying liquid through a spinneret having a discharge outlet diameter of from 50 to 500 µm.
Claim 7
Dependent Claim
43 words
The process according to Claim 1, wherein the raw material slurry is discharged through a film-forming head having a slit clearance of from 50 to 500 µm so that it is spread on the surface of the solidifying liquid by the surface tension.
Claim 8
Dependent Claim
52 words
The process according to Claim 1, wherein the raw material slurry is discharged from an overflow vessel having an overflow edge at a location from 1 to 10 mm above the surface of the solidifying liquid so that it is spread on the surface of the solidifying liquid by the surface tension.
Claim 9
Dependent Claim
25 words
The process according to Claim 7 or 8, wherein the raw material slurry is spread with a width of from to 1 to 10 cm.
Claim 10
Dependent Claim
22 words
The process according to Claim 7, wherein the raw material slurry is brought in contact with the solidifying liquid while being stretched.
Claim 11
Dependent Claim
59 words
The process acoording to Claim 1, wherein the discharging rate of the raw material slurry and the the withdrawing rate of the solidified green body are adjusted so that the stretching ratio of the withdrawing rate of the solidified green body to the discharging rate of the raw material slurry is within a range of from 2 to 100.
References Cited (Backward Citations)
No citation records indexed.
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