초록 ▼

A generally cylindrical thermally insulated ceramic container of imposing appearance suitable for use on dining tables comprises a double-wall ceramic container and insulation formed of a foaming resin of low thermal conductivity and contained in the inner cavity interposed between the two walls. Th

A generally cylindrical thermally insulated ceramic container of imposing appearance suitable for use on dining tables comprises a double-wall ceramic container and insulation formed of a foaming resin of low thermal conductivity and contained in the inner cavity interposed between the two walls. The thermally insulated ceramic container is produced by preparing an inner green container wall and an outer green container wall one size larger, both of potter\s dough, joining the two green container walls along the upper edges thereof with the walls radially opposed to each other across an intervening space (inner cavity), firing the resultant molded green double-wall container thereby producing a double-wall ceramic container, injecting an unfoamed or semi-foamed foaming resin into the inner cavity through a perforation bored in advance in the outer wall, and foaming the resin within the inner cavity.

대표청구항 ▼

A thermally insulated double wall ceramic container, comprising an inner container wall and an outer container wall, cement joining said inner and outer walls with an inner cavity formed therebetween, and insulation formed of a foaming resin of low thermal conductivity contained within said inner ca

A thermally insulated double wall ceramic container, comprising an inner container wall and an outer container wall, cement joining said inner and outer walls with an inner cavity formed therebetween, and insulation formed of a foaming resin of low thermal conductivity contained within said inner cavity, said outer wall having an opening for insertion of said insulation into said inner cavity. A method of manufacturing a thermally insulated ceramic container, comprising the steps of: (1) forming an inner green container wall, and an outer green container wall larger than said inner green container wall, each having an upper circumferential edge; (2) inserting said inner wall within said outer wall, said inner and outer walls being sized so that an inner cavity is located between said inner and outer walls when said inner wall is inserted within said outer wall; (3) forming an opening in said outer wall, said opening opening into said inner cavity when said inner wall is inserted within said outer wall; (4) intimately joining said inner and outer walls along their upper circumferential edges with cement to form a molded green double-wall container after step (3); (5) firing said molded green double-wall container to produce a double-wall ceramic container; and (6) injecting a foaming resin of low thermal conductivity into said inner cavity through said opening and foaming said resin to thereby form an insulation filling said inner cavity.