公开(公告)号：US10538453B2

公开(公告)日：2020-01-21

申请号：US15674124

申请日：2017-08-10

Applicant: Schott AG

Inventor： Dirk Förtsch ,  Stephan Behle ,  Peter Thomas

IPC: C03B33/02 ,  C03B33/09 ,  C03B33/023 ,  B65G49/06 ,  C03B33/03 ,  C03C3/091 ,  C03C3/064 ,  C03C3/066 ,  C03C3/089 ,  C03C3/093

Abstract: A method for cutting thin glass, wherein the thin glass is heated with a laser beam along a path forming a cutting line moving along a forward feed direction, such that a crack propagates along the cutting line and cuts through the thin glass. The laser beam is formed by a beam-forming optic in such a way that the beam profile thereof has an elongated shape. The laser beam is orientated on the surface of the thin glass such that the longitudinal direction thereof is aligned in the feed direction. The elongated shape of the beam profile is asymmetric, such that the intensity course differs at the ends of the beam profile in such a way that the increase in intensity at the front end crossing the thin glass first is steeper than the drop in intensity at the opposite rear end.

公开(公告)号：US10407336B2

公开(公告)日：2019-09-10

申请号：US15686514

申请日：2017-08-25

Applicant: Schott AG

Inventor： Thomas Rossmeier ,  Andreas Ortner ,  Jürgen Vogt ,  Andreas Habeck ,  Clemens Ottermann ,  Dirk Förtsch ,  Christian Breitbach ,  Stephan Behle

IPC: C03B33/00 ,  C03B33/09 ,  B65G49/06 ,  C03B33/023 ,  C03B33/03

Abstract: A method for cutting a thin glass including the steps of guiding, by a transport device, the thin glass ribbon over a levitation support, and directing, within a range of the levitation support, a laser beam onto the thin glass ribbon, which heats up the thin glass ribbon at an impingement point of the laser beam. The method also includes the step of blowing, by a cooling jet generator, a cooling fluid onto the track heated by the laser beam so that a region heated by the laser beam is cooled down and a mechanical stress is created. The cooling fluid contains vapor of a liquid at a saturation ratio of at least 0.5 or a plurality of liquid droplets. The liquid droplets form a contact angle on a surface of the thin glass ribbon which is smaller than that of water on the same surface.

公开(公告)号：US20180037490A1

公开(公告)日：2018-02-08

申请号：US15686514

申请日：2017-08-25

Applicant: Schott AG

Inventor： Thomas Rossmeier ,  Andreas Ortner ,  Jürgen Vogt ,  Andreas Habeck ,  Clemens Ottermann ,  Dirk Förtsch ,  Christian Breitbach ,  Stephan Behle

IPC: C03B33/09 ,  C03B33/03 ,  C03B33/023

CPC classification number: C03B33/091 ,  B65G49/065 ,  C03B33/0235 ,  C03B33/03

Abstract: A method for cutting a thin glass including the steps of guiding, by a transport device, the thin glass ribbon over a levitation support, and directing, within a range of the levitation support, a laser beam onto the thin glass ribbon, which heats up the thin glass ribbon at an impingement point of the laser beam. The method also includes the step of blowing, by a cooling jet generator, a cooling fluid onto the track heated by the laser beam so that a region heated by the laser beam is cooled down and a mechanical stress is created. The cooling fluid contains vapor of a liquid at a saturation ratio of at least 0.5 or a plurality of liquid droplets. The liquid droplets form a contact angle on a surface of the thin glass ribbon which is smaller than that of water on the same surface.

公开(公告)号：US20180022631A1

公开(公告)日：2018-01-25

申请号：US15674124

申请日：2017-08-10

Applicant: Schott AG

Inventor： Dirk Förtsch ,  Stephan Behle ,  Peter Thomas

IPC: C03B33/09 ,  C03B33/03 ,  C03C3/091 ,  B65G49/06 ,  C03C3/093 ,  C03C3/064 ,  C03C3/066 ,  C03B33/023 ,  C03C3/089

CPC classification number: C03B33/091 ,  B65G49/065 ,  C03B33/0235 ,  C03B33/03 ,  C03C3/064 ,  C03C3/066 ,  C03C3/089 ,  C03C3/091 ,  C03C3/093

Abstract: A method for cutting thin glass, wherein the thin glass is heated with a laser beam along a path forming a cutting line moving along a forward feed direction, such that a crack propagates along the cutting line and cuts through the thin glass. The laser beam is formed by a beam-forming optic in such a way that the beam profile thereof has an elongated shape. The laser beam is orientated on the surface of the thin glass such that the longitudinal direction thereof is aligned in the feed direction. The elongated shape of the beam profile is asymmetric, such that the intensity course differs at the ends of the beam profile in such a way that the increase in intensity at the front end crossing the thin glass first is steeper than the drop in intensity at the opposite rear end.