Process for producing thin glass on roll

Details Process for producing thin glass on roll Process for producing thin glass on roll

1998-04-30

2000-07-25

Silverman, Stanley S.

Glass manufacturing

Processes

With chemically reactive treatment of glass preform

65 3014, 65 325, 65 95, 65 992, 65148, 65185, 65193, 65198, C03C 1500, C03B 1300, C03B 1310, C03B 1312, C03B 1502

Patent

active

06092392&

ABSTRACT:
This invention relates to a continuous process for producing a web of thin, chemically hardened glass that can be wound on a roll. The process comprises the steps of (i) drawing glass, containing original alkali ions, to form a web of glass having a thickness equal to or lower than 1.2 mm and having a first and second major surface; (ii) directly after or during said drawing, treating both said surfaces of said web with chemical hardening means during less than two hours, replacing said original alkali ions by alkali ions having a larger radius; and (iii) after treating both said surfaces, winding said web on a core.

REFERENCES:
patent: 3505047 (1970-04-01), Plumat
patent: 4846868 (1989-07-01), Aratani
patent: 5277946 (1994-01-01), Nagai et al.
patent: 5871879 (1999-02-01), Verlinden et al.
patent: 5916656 (1999-06-01), Kitayama et al.
Derwent Abstract re JP 56 041 859 A (Teijin Ltd), Apr. 18, 1981.
Derwent Abstract re JP 49 010 807 B (Nippon Sheet Glass Co), Mar. 13, 1974.

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