Manufacturing method for glass film with resin tape, and manufacturing method for glass film

Abstract

Provided is a method comprises: continuously forming an elongated, glass film having marginal portions from molten glass into a given shape having two marginal portions, in width-directional opposite edge regions thereof, wherein the glass film having marginal portions has the marginal portions, and an effective portion formed in a width-directional central region of the glass film having marginal portions; annealing the glass film having marginal portions; continuously forming resin tapes on the glass film having marginal portions at positions adjacent to and away by a given distance from the respective marginal portions, to extend in a length direction of the glass film having marginal portions; and continuously removing each of the marginal portions from the glass film having marginal portions, along a position between the marginal portion and a corresponding one of the resin tapes, or at a given width-directional position within the corresponding resin tape.

1 . A manufacturing method of glass film with resin tape comprising:
 a forming step of continuously forming an elongated glass film having marginal portions having marginal portions in width-directional opposite edge regions thereof from molten glass, wherein the glass film having marginal portions has the marginal portions, and an effective portion formed in a width-directional central region of the glass film having marginal portions;   an annealing step of annealing the glass film having marginal portions;   a resin tape forming step of continuously forming resin tapes on the glass film having marginal portions at positions adjacent to and away by a given distance from the respective marginal portions, in a length direction of the glass film having marginal portions; and   a marginal portion removal step of continuously removing each of the marginal portions from the glass film having marginal portions, at a position between the marginal portion and a corresponding one of the resin tapes, or at a given width-directional position within the resin tape, to form a glass film with resin tape.   
     
     
         2 . The manufacturing method of glass film with resin tape as recited in  claim 1 , wherein the resin tape forming step comprises a resin tape attaching step of attaching the resin tape to a surface of the glass film having marginal portions, while continuously feeding the resin tape from a resin tape roll. 
     
     
         3 . The manufacturing method of glass film with resin tape as recited in  claim 2 , wherein the resin tape attaching step includes applying an adhesive to an interface between the resin tape and the glass film having marginal portions. 
     
     
         4 . The manufacturing method of glass film with resin tape as recited in  claim 1 , wherein the resin tape forming step comprises a resin solution application step of continuously applying a resin solution to a surface of the glass film having marginal portions, in a tape-like configuration. 
     
     
         5 . The manufacturing method of glass film with resin tape as recited in  claim 4 , wherein the resin solution is a solution of a thermo-curable resin or a photo-curable resin. 
     
     
         6 . The manufacturing method of glass film with resin tape as recited in  claim 1 , wherein the resin tape forming step includes forming the resin tapes at positions away from edge sides of the glass film having marginal portions by 40% or less of a width of the glass film having marginal portions. 
     
     
         7 . The manufacturing method of glass film with resin tape as recited in  claim 1 , wherein the forming step includes using one of a float process, an overflow downdraw process, and a slot downdraw process. 
     
     
         8 . The manufacturing method of glass film with resin tape as recited in  claim 1 , wherein the effective portion has a thickness of 20 to 500 μm. 
     
     
         9 . The manufacturing method of glass film with resin tape as recited in  claim 1 , which comprises a winding step of winding the glass film with resin tape in the form of a roll. 
     
     
         10 . The manufacturing method of glass film with resin tape as recited in  claim 9 , wherein
 the resin tape forming step includes continuously forming the resin tapes on only one surface of the glass film having marginal portions, and   the winding step includes winding the glass film with resin tape in the form of a roll, in a posture where the one surface of the glass film with resin tape faces outwardly.   
     
     
         11 . The manufacturing method of glass film with resin tape as recited in  claim 10 , wherein the winding step includes continuously feeding a protective sheet from a protective sheet roll, and winding the glass film with resin tape in the form of a roll, together with the protective sheet. 
     
     
         12 . A glass film manufacturing method comprising:
 a step of obtaining a glass film with resin tape using the manufacturing method of glass film with resin tape as recited in  claim 1 ; and   a resin tape removal step of continuously removing, from the glass film with resin tape, width-directional opposite edge regions of the glass film with resin tape on which the resin tapes are formed, thereby forming a glass film.   
     
     
         13 . The glass film manufacturing method as recited in  claim 12 , which comprises a winding step of winding the glass film in the form of a roll. 
     
     
         14 . The glass film manufacturing method as recited in  claim 12 , which comprises a step of cutting the glass film in a width direction thereof.