DEVICE FOR CLEAVING STRIP-SHAPED GLASS FILM AND METHOD FOR CLEAVING STRIP-SHAPED GLASS FILM

摘要

The present invention provides a device for cleaving a strip-shaped glass film and a method for cleaving a strip-shaped glass film which are capable of controlling waviness from occurring in the region to be cleaved in a strip-shaped glass film, with at least one side (effective surface) of the strip-shaped glass film in a non-contact state. The device for cleaving a strip-shaped glass film (1) conveys a strip-shaped glass film (2) in the lengthwise direction while cleaving the strip-shaped glass film (2) along the conveyance direction by using thermal stress generated when applying localized heating and cooling to the heated region on the prescribed cleaving line along the conveyance direction of the strip-shaped glass film (2). The cleaving device (1) supports the reverse side of the strip-shaped glass film (2) by a conveyor (3) at a position in the conveyance direction upstream of a cleaving region (R) where the strip-shaped glass film (2) is to be cleaved, while pressing the strip-shaped glass film (2) against the conveyor (3) by supplying air to the surface of the strip-shaped glass film (2) from an air knife (5).