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
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 0007869941000004 
Figure 0007869941000005
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