Pouch with spout

Abstract

Provided is a spouted pouch, said pouch being suitable for achieving a high gas-barrier property. This pouch X is provided with a pouch main body 10 and a spout 20. The pouch main body 10 is configured from a film having a sealant layer on an inner surface thereof. The spout 20 is an integrally molded resin body and contains each of an olefin-based resin and an ethylene-vinyl alcohol copolymer and is attached to the pouch main body by thermal welding with the sealant layer. The sealant layer is configured from an olefin-based resin film having a heat seal strength determined by the following peel test of 10 N/15 mm or less. The peel test: two olefin-based films each lined with a fracture prevention film are partially thermal-welded by an action of a compression pressure of 0.2 MPa for 1 second at 105° C., and thereafter the thermally welded section is subjected to a peel test under the condition of a tension rate of 300 mm/min at 23±2° C.

1 . A spouted pouch comprising:
 a pouch main body comprising a film having a sealant layer forming an inner surface of the pouch main body; and   a spout being an integrally molded resin body containing both an olefin resin and ethylene-vinyl alcohol copolymer, the spout being attached to the pouch main body by thermal welding to the sealant layer, wherein   the sealant layer comprises an olefin resin film having a heat seal strength as determined by the following peel test of 10 N/15 mm or less:   the peel test in which two olefin resin films each lined with a fracture prevention film are thermally welded in part to each other by applying a compression pressure of 0.2 MPa at 105° C. for 1 second, and subsequently the thermally welded portion of the olefin resin films is subjected to the peel test under conditions of a temperature of 23±2° C. and a tensile rate of 300 mm/min.   
     
     
         2 . The spouted pouch according to  claim 1 , wherein a proportion of the ethylene-vinyl alcohol copolymer contained in the spout is 20 to 70% by mass. 
     
     
         3 . The spouted pouch according to  claim 1 , wherein the olefin resin film comprises a polyethylene resin as a main component. 
     
     
         4 . The spouted pouch according to  claim 1 , wherein the film has a multilayer structure further comprising a barrier layer. 
     
     
         5 . The spouted pouch according to  claim 2 , wherein the olefin resin film comprises a polyethylene resin as a main component. 
     
     
         6 . The spouted pouch according to  claim 2 , wherein the film has a multilayer structure further comprising a barrier layer. 
     
     
         7 . The spouted pouch according to  claim 3 , wherein the film has a multilayer structure further comprising a barrier layer. 
     
     
         8 . The spouted pouch according to  claim 5 , wherein the film has a multilayer structure further comprising a barrier layer.