Decorating method for opaque glass product with transparent design

Abstract

Abstract PURPOSE:To simply obtain a glass product decorated with a transparent design by putting a starting material for transparent or translucent glass in a molding tool made of refractory, packing a starting material for opaque glass into the tool around said starting material, and sintering the materials. CONSTITUTION:The 1st transparent or translucent starting material glass 1 put in a molding tool 3 made of refractory gypsum, fire clay or the like in the form of rods or lumps having enough size to maintain the transparency or translucency even after sintering so as to obtain a desired design, and the 2nd granular starting material glass 2 which is opqaue or is made opaque by sintering is packed into the tool 3 around the glass 1. The glass 1 and the glass 2 are then sintered by keeping at about 750 deg.C for about 5hr to obtain a product composed of transparent or translucent sintered glass 1' and opaque sintered glass 2'. It is preferable that the 1st and 2nd starting materials are close to each other in coefft. of thermal expansion. Transparent glass can be also used as the 2nd starting material glass by fine crushing.

Inventors

• 👤 Yasukazu Hasegawa
• 👤 長谷川　保和

Bibliographic Details