Water-Soluble Film Roll and Method for Paying Out Water-Soluble Film

Abstract

To provide a water-soluble film roll 3 having end faces 4 with masking materials 5 adhered thereto. By using the water-soluble film roll 3 and paying out a water-soluble film 1 while holding the masking materials 5 adhered to the end faces 4 , it is possible to prevent moisture from adhering to the end faces 4 and to prevent the water-soluble film 1 from rupturing due to welding of the film 1 with itself. In this connection, the masking materials 5 are preferably a plastic film capable of being adhered to the end faces 4 with a pressure-sensitive adhesive.

1 . A water-soluble film roll, wherein a masking material is adhered to an end face of a roll of a water-soluble film. 
     
     
         2 . The water-soluble film roll according to  claim 1 , wherein the water-soluble film is a polyvinyl alcohol film. 
     
     
         3 . The water-soluble film roll according to  claim 1 , wherein the water-soluble film has a thickness of 10 to 200 μm. 
     
     
         4 . The water-soluble film roll according to  claim 1 , wherein the water-soluble film has a water content of 1 to 6% by weight. 
     
     
         5 . The water-soluble film roll according to  claim 1 , herein the water-soluble film has a Young's modulus of 50 to 500 MPa. 
     
     
         6 . The water-soluble film roll according to  claim 1 , herein the masking material is adhered with a pressure-sensitive adhesive. 
     
     
         7 . The water-soluble film roll according to  claim 6 , wherein the pressure-sensitive adhesive has an adhesion of 0.01 to 5 N/cm. 
     
     
         8 . The water-soluble film roll according to  claim 1 , wherein the masking material is composed of a plastic film. 
     
     
         9 . The water-soluble film roll according to  claim 1 , wherein the water-soluble film is a hydraulic transfer base film. 
     
     
         10 . A package comprising the water-soluble film roll according to  claim 1 , in a moisture-proof package. 
     
     
         11 . A method for paying out a water-soluble film, the method comprising paying out the water-soluble film from the water-soluble film roll according to  claim 1  while the masking material is held adhered to the end face of the water-soluble film roll. 
     
     
         12 . The method for paving out a water-soluble film according to  claim 11 , wherein the paying out speed is 1 to 100 m/min. 
     
     
         13 . A method for producing a printed film, the method comprising applying print to a water-soluble film while paying out the water-soluble film by the method according to  claim 11 .