Surface protective film for transparent conductive film and method for manufacturing the same, and transparent conductive film with surface protective film

Abstract

A surfa e prote tive film for transparent onductive films is provided that does not demonstrate large curling after a transparent conductive film with the surface protective film attached thereon is introduced in a heating process of about 150° C. A film that protects a surface of a side opposite to a conductive thin film or a surface on a side of the conductive thin film of a transparent conductive film, wherein a adhesive layer is formed on one side of a base material film, and a rate of thermal shrinkage after being heated at 150° C. for 1 hour shows no more than 0.9% in both MD (machine direction) and TD (width direction).

What is laimed is:  
     
         1 . A surface protectiv film for transparent conductive films protecting a surface of a side opposite to a conductive thin film or a surface on a side of a conductive thin film of the transparent conductive film, wherein an adhesive layer is formed on one side of a base material film, and a rate of thermal shrinkage after being heated at 150° C. for 1 hour shows no more than 0.9% in both MD (machine direction) and TD (width direction).  
     
     
         2 . The surface protective film for transparent conductive films according to  claim 1 , wherein 
 a treatment for removing a residual stress is performed to the base material film.    
     
     
         3 . The surface protective film for transparent conductive films according to  claim 1 , wherein 
 the base material film is a film including polyethylene terephthalates and/or polyethylene naphthalates.    
     
     
         4 . A transparent conductive film with surface protective film, wherein 
 a conductive thin film is formed on one side of a base material film and a hard coat layer or an anti-glare layer is formed on the other surface side, and simultaneously    an adhesive layer of the surface protective film for transparent conductive films according to claims  1  through  3  is attached on a surface of the hard coat layer or the anti-glare layer, or the surface of conductive thin film.    
     
     
         5 . A transparent conductive film with surface prote tive film wherein 
 a conductive thin film is formed on one side of a base material film, and simultaneously an adhesive layer of the surface protective film for transparent conductive films according to claims  1  through  3  is attached on the other surface side of the base material film or on a surface of the conductive thin film.    
     
     
         6 . A method for manufacturing a surface protective film for transparent conductive films according to  claim 2  or  3 , wherein 
 after an adhesive is applied to one side of a base material film, a drawing tension of no more than 80 N per width of 1 m of the base material film is applied under conditions of a temperature of 100 through 150° C., and a residence time of 20 through 120 seconds, and thereby a treatment for removing a residual stress and simultaneous drying of the adhesive are performed.