Patent · US Active

Method for controlling the thickness of a substrate

US10501359B2 · kind B2 · utility

0Cited by

1References

10Claims

0Family size

Assignee

Schott AG · DE

Inventors

Frank Buellesfeld · Kriftel, DE
Ulrich Lange · Mainz, DE
Georg Haselhorst · Schmitten, DE

Key dates

Filing date	Feb 3, 2017
Grant date	Dec 10, 2019
Priority date	—
Expiry date	Jan 1, 2038

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC03B2205/40
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A method for controlling the thickness of a glass ribbon and an article produced thereby are provided. The method includes: providing a glass ribbon by drawing from a melt or redrawing from a preform; predefining a nominal thickness of the glass ribbon; determining the thickness of the glass ribbon over its entire net width; determining at least one deviation of the thickness of the glass ribbon from the predefined nominal thickness; identifying the area of the thickness deviation in the glass ribbon; and heating the area of the at least one thickness deviation in the glass ribbon using a laser, so that the glass ribbon attains the predefined thickness.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.