PRODUCTION OF CERAMIC WARE-LIKE HYGIENIC POTTERY PRODUCT

摘要

PURPOSE: To obtain the subject product clearly showing an unequally spotted pattern and a fine penetration pattern by successively coating the surface of molded raw body of hygienic pottery with matte enamel having low refractoriness and bright enamel having high refractoriness and burning. ;CONSTITUTION: For example, the surface of a molded raw body 2 of a hand- washing tool is coated with a matte enamel having low refractoriness to form a base layer 3. Further the base layer 3 corresponding to a face of part exposed to the outside from a counter is coated with bright enamel having higher refractoriness than the matte enamel in a lapped way to give top layer 5. When this glazed molded raw body 2 is burnt, the base layer 3 becomes a flowing state and flows vigorously at a standing face of the molded raw body 2 and moves mildly closer to a horizontal face. With the flow, the top layer 5 also moves, its thickness becomes unequal, crystallization of the matte enamel is advanced in a thick part but not so advanced in a thick part. Consequently, a spotted pattern is formed and made into roughness and denseness. Penetration occurs between the layers 3 and 5 by difference in refractoriness to simultaneously exhibit a matte-tone and a bright-tone patterns as a whole.;COPYRIGHT: (C)1993,JPO&Japio