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|1. (WO2018142028) METHOD FOR MANUFACTURING A NATURALLY COOLING CERAMIC RECEPTACLE|
|Title:||METHOD FOR MANUFACTURING A NATURALLY COOLING CERAMIC RECEPTACLE|
A method for manufacturing a naturally cooling ceramic receptacle comprises the following steps: - preparing a clay body by adding ball clay (kaolin) and/or quartz (talk) and water and deflocculant; - forming the clay body into a desired shape of the ceramic receptacle with molds by at least one of the following forming methods: roller making, pressure casting and slip casting; - demolding the formed clay body and drying it for several hours at a temperature higher than a room temperature; - performing a first firing of the formed and dried clay body in a kiln in a temperature higher than 1050 °C to obtain a biscuit receptacle; - mixing a slip casting clay with desired color pigments to produce plastic colored slip casting clay; - dipping the biscuit receptacle into the colored slip casting clay and performing immediate drying; and - performing a second firing of the biscuit receptacle with the dried color slip casting clay thereon in a kiln in a temperature higher than 1000 °C but lower than the temperature of the first firing.