Apparatus and method for cutting the length of ultrathin glass.

The method of controlled bending stress and rapid cooling, combined with precise adjustment of bending radius and scribing angles, addresses the challenges of cutting ultrathin glass, achieving controlled fracture and high yield, enabling glass ribbon sections of desirable lengths.

JP7869941B2Active Publication Date: 2026-06-04SCHOTT AG
View PDF 8 Cites 0 Cited by

Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
SCHOTT AG
Filing Date
2021-07-13
Publication Date
2026-06-04

Smart Images

  • Figure 0007869941000003
    Figure 0007869941000003
  • Figure 0007869941000004
    Figure 0007869941000004
  • Figure 0007869941000005
    Figure 0007869941000005
Patent Text Reader

Abstract

To provide a method for manufacturing a glass ribbon section having a length variable from ultrathin glass with sufficient cutting quality and high yield.SOLUTION: A method for manufacture glass ribbon sections 60 to 62 comprises steps of: conveying a glass ribbon 4 at a speed v1 depending on a predetermined glass thickness (d1) in a plane E1 while applying a tensile stress in parallel to the side edge part of the glass ribbon and cooling the glass ribbon at a cooling rate depending on the predetermined glass thickness (d1); putting a scribe forming an angle α to the conveying direction of the glass ribbon on the surface of the glass ribbon by a marking tool by marking a glass surface in at least one edge part region to change the direction of the glass ribbon in the plane E2 so as to generate a bending stress; and cutting a glass ribbon section so as to form an edge by breaking the glass ribbon along a scribe extended line formed in the lateral direction to the glass ribbon.SELECTED DRAWING: Figure 2
Need to check novelty before this filing date? Find Prior Art

Citation Information

Patent Citations

  • Method for cutting plate glass and its device

    JP1996217476A

  • Method for producing individual glass plate and apparatus therefor

    JP2000335928A

  • Method for manufacturing glass plate, device for scribing sheet glass and apparatus for manufacturing glass plate

    JP2015143174A

  • Device and method for cutting through workpiece of mechanically brittle and non-metallic material moving at predetermined speed

    JP2016056085A

  • Glass plate manufacturing method, and glass plate manufacturing apparatus

    JP2016190754A