CERAMIC FILTER FOR BEVERAGE AND MANUFACTURING METHOD OF THE SAME
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United States of America Patent
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Jul 4, 2019
app pub date -
Dec 26, 2018
filing date -
Dec 26, 2018
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Abstract
A ceramic filter 1 requires a permeation time ranging from 3 seconds to 15 seconds in a case where 150 ml of hot water having a temperature of 90° C. is introduced, has a total pore volume of 0.230 to 0.270 cm3/g, and has a median pore diameter of 100 to 160 μm. A method for manufacturing the ceramic filter 1 includes a kneading process of obtaining a kneaded material in which 55 to 65 mass % of alumina, 6 to 12 mass % of bentonite, 6 to 10 mass % of water-insoluble organic fine particles, and 15 to 30 mass % of water are mixed, a primary molding process of molding a primary molded article by manually pressing the kneaded material against a filter mold, a secondary molding process of molding a secondary molded article by performing press working on the primary molded article molded in the primary molding process, and a firing process of firing the secondary molded article molded in the secondary molding process.
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