Glass for a cone of a display tube, display tube envelope compri

Details Glass for a cone of a display tube, display tube envelope compri Glass for a cone of a display tube, display tube envelope compri

1996-11-04

1998-03-10

Bell, Mark L.

Glass manufacturing

Processes

Forming product or preform from molten glass

651341, 501 62, 501155, C03B 900, C03C 3105

Patent

active

057256276

ABSTRACT:
The invention comprises a novel type of glass for a cone (3) of a display tube envelope (1), said glass being manufactured by recycling screen glass and cone glass of display tube envelopes. A mixture of screen and cone glasses is supplemented with other glass-forming components to form a novel glass composition which can be used in cone glass applications. The glass is characterized by a relatively high BaO and SrO content. The glass has an x-ray absorption .mu. of at least 65 cm.sup.-1 at 0.6 .ANG..

REFERENCES:
patent: 2388866 (1945-11-01), Partridge
patent: 2692833 (1954-10-01), Armistead
patent: 3005122 (1961-10-01), Coleman et al.
patent: 3464932 (1969-09-01), Connelly et al.
patent: 3672919 (1972-06-01), Sack
patent: 4174490 (1979-11-01), Van Erk et al.
patent: 4520115 (1985-05-01), Speit et al.
patent: 4680503 (1987-07-01), Spierings et al.
Chemical Abstract, vol. 87, No. 22, 28 Nov. 1977, Abstract JP-A-52 068 219.
Chemical Abstracts, vol. 82, No. 18, 5 May 1975, Abstract JP-A-49 026 051.

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