公开(公告)号：NL2027190B1

公开(公告)日：2022-06-30

申请号：NL2027190

申请日：2020-12-21

Applicant: CORNING INC

Inventor： JEREMY NATHAN PAYNE ,  DOUGLAS DALE BRESSLER ,  MIKI EUGENE KUNITAKE ,  SHYAM PRASAD MUDIRAJ ,  MICHAEL CHARLES GERRISH ,  RYAN CHRISTOPHER SUTTON ,  DOUGLAS HULL JENNINGS ,  STEVEN HOWARD TARCZA ,  DAVID ALAN DENEKA ,  EUGENE ROLAND PROULX II ,  WILLIAM EDWARD LOCK ,  NEIL EUGENE PARTRIDGE

IPC: C03B17/06 ,  C03B25/12 ,  C03C1/00

Abstract: A method of forming a glass sheet comprises: (a) forming a ribbon of glass from molten glass With a pair of forming rollers; (b) reducing horizontal temperature variability of the ribbon of glass to be 10 °C or less across 80 percent of an entire Width of the ribbon of glass before the ribbon of glass cools to a glass transition temperature; (c) controlling a cooling rate of the ribbon of glass While the ribbon of glass moves vertically downward Within a setting zone such that the ribbon of glass has a first average cooling rate before the ribbon of glass cools to the glass transition temperature and a second average cooling rate after the ribbon of glass cools to the glass transition temperature, the first average cooling rate being less than the second average cooling rate; and (d) separating a glass sheet from the ribbon of glass.