Method for the heat-softened severance of glass tubes or plates

Details Method for the heat-softened severance of glass tubes or plates Method for the heat-softened severance of glass tubes or plates

1998-01-15

1999-05-11

Chin, Peter

Glass manufacturing

Processes

Reshaping or surface deformation of glass preform

65 56, 65108, 65112, 65113, C03B21/00;29/00

Patent

active

059023686

ABSTRACT:
Disclosed is a method for the heat-softened severance of thin-walled glass tubes or plates with a wall thickness of no more than 0.2 mm, wherein the glass is softened on a width of no more than 0.4 mm, the softened area is reduced by drawing to a wall thickness of no more than 0.05 mm, and then is separated by additional heating in the drawn-out area.

REFERENCES:
patent: 2379342 (1945-06-01), Cozzoli
patent: 3817733 (1974-06-01), Thuler
patent: 4350722 (1982-09-01), Trutnert et al.
patent: 4600424 (1986-07-01), Flaming
patent: 4869745 (1989-09-01), Flaming
patent: 4913719 (1990-04-01), Flaming
patent: 4921522 (1990-05-01), Flaming
patent: 5143533 (1992-09-01), Brusasco
patent: 5181948 (1993-01-01), Belgum
patent: 5254833 (1993-10-01), Okiyama
Silicates Industriels, Bd. 38, Nr. 7/8, 1973, Belgien, pp. 145-147, XP002007154, J.-L. Lambert: "Decoupe d'un verre plat etire a l'aide d'un laser au CO.sub.2 ".

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