Corning Incorporated

Craig Gene Stewart

Anatoli Anatolyevich Abramov

Methods of separating a glass web include exposing a separation path on the glass web to a laser beam that produces thermal stress along the separation path without damaging the glass web. The methods further include redirecting a portion of the laser beam to create a defect on the separation path while the separation path is under thermal stress produced during the exposing the separation path on the glass web to the laser beam, whereupon the glass web separates along the separation path in response to creating the defect. Apparatus are further provided for separating a glass web with at least one laser beam generator that produces a laser beam to heat a separation path and a mirror configured to reflect an end portion of the laser beam to create a defect at a location of the separation path on the glass web.

Methods of separating a glass web

Methods of separating a glass web include the step (I) of exposing a path on the glass web to at least one laser beam to produce thermal stress along the path without damaging the glass web. The methods further include the step (II) of creating a defect on the path while the path is under thermal stress produced during step (I), whereupon the glass web spontaneously separates along the path in response to the defect.

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Corning, NY, United States of America

Craig Gene Stewart