Methods for manufacturing a glass ribbon include moving the glass ribbon along a travel path in a travel direction. Methods include directing a first ribbon portion of the glass ribbon to a winding apparatus to wind the first ribbon portion into a roll. Methods include detaching the first ribbon portion from a second ribbon portion of the glass ribbon. Methods include separating the second ribbon portion into a plurality of separated ribbon portions. Methods include directing a first set of the plurality of separated ribbon portions toward a disposal apparatus to crush the first set of the plurality of separated ribbon portions. Methods include forming a stack with a second set of the plurality of separated ribbon portions. A glass manufacturing apparatus is provided.

A manufacturing method of a window glass includes providing a window glass including a folding portion and non-folding portions spaced apart from each other with the folding portion interposed therebetween, heating the window glass to make the folding portion in a bent state, and polishing one surface of the folding portion in the bent state.

A manufacturing method of a window glass includes providing a window glass including a folding portion and non-folding portions spaced apart from each other with the folding portion interposed therebetween, heating the window glass to make the folding portion in a bent state, and polishing one surface of the folding portion in the bent state.

A manufacturing method for a glass film includes at least a cutting step of cutting a strip-shaped glass film while conveying the glass film in a predetermined direction by a conveying device. In the cutting step, the glass film is cut in predetermined cutting zones by irradiating the glass film with laser beams. A support conveyance surface of the conveying device for the glass film is separated at the cutting zones for the glass film. Further, a first surface plate capable of supporting the glass film in a contact manner is disposed at a position that is located in a width direction of the glass film with respect to the cutting zones and corresponds to a center of a glass film obtained by the cutting in the width direction.

A sheet-like glass element has a thickness less than or equal to 0.5 mm and an edge with an edge face intersecting opposite glass faces along two edge lines. The edge face has strip-like sections with each one adjoining a respective one of the edge lines. The strip-like sections interface along a boundary line that extends between the edge lines. The strip-like sections have a first section with a width ranging from 2 m to 8 m and have a first waviness that is lower than a second waviness of a second strip-like section. The second waviness decreases towards the edge line.