Method for producing air-tight, heat-resistant plate

Glass manufacturing – Processes – Fusion bonding of glass to a formed part

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65 5921, 65 5922, 65 595, C03C 2700

Patent

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047463465

ABSTRACT:
A method for producing an air-tight, heat-resistant plate for a particular use in manufacturing bulbous fluorescent lamp, which comprises: preparing a shaping material by mixing an inorganic filler composed of alumina powder and silica powder in a specified compositional ratio, and glass powder having a thermal expansion coefficient of 8.5 to 11.5.times.10.sup.-6 /.degree.C., both inorganic filler and glass material being blended at a predetermined ratio then, forming the shaping material into a shaped product of any desired configuration by a known shaping method; thereafter heating this shaped body to a temperature, at which the glass powder used becomes molten and fused, thereby rendering it to be a burned body.

REFERENCES:
patent: 2912340 (1959-11-01), Pincus
patent: 3051589 (1962-08-01), Sanford et al.
patent: 3228548 (1966-01-01), Butler
patent: 3374076 (1968-03-01), Smith
patent: 3881904 (1975-05-01), Stokes et al.
patent: 4002799 (1977-01-01), Dumesnil et al.
patent: 4585972 (1986-04-01), Hing

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