Ornamental vitreous foamed body

Abstract

Abstract PURPOSE:To improve the decorativeness and mechanical strength of the foamed body by integrally laminating a specified dense vitreous layer on a vitreous foamed layer. CONSTITUTION:A glass powder having <=150mum grain diameter and a foaming agent such as limestone and dolomite and the inorg. pigment, heat-resistant material and binder, as required, are mixed, and the mixture is granulated to obtain a vitreous foamed layer material. The formed layer material is then coated through an adhesive with the same glass material as before having 0.5-5mm grain diameter and a colored layer forming material in white, black or various colors having several to several ten mum grain diameter and the softening point below the foaming temp. of the foamed body and above the softening point of the foaming layer forming glass to obtain a dense glass layer material. The foamed layer material is then placed on a traveling lower belt to form a band, the vitreous material is placed thereon to form a laminated band, and the laminated band is clamped by the upper and lower belts to foam the foamed layer material and to fuse the vitreous material and then slowly cooled to form a dense vitreous layer 1 consisting of vitreous spotted matrixes 2, 2' and 2'' and the colored material coating layers 3, 3' and 3'' constituting the colored edge around the matrix on the glass foamed layer 4.

Inventors

• 👤 Nobuo Nakamura
• 👤 中村　暢雄

Bibliographic Details