Reclosable Flowpack

Abstract

The present invention is related a reclosable flowpack comprising: a film (6) comprising one or more polymeric layer(s),—a top fold, a flap fold and a flap, said flap comprising a peelable fm seal joining an upper- end portion and a lower-end portion of said film,—two peelable cross seals closing both ends of the flowpack,—a pressure-sensitive adhesive, the position of said pressure-sensitive adhesive and said flap allowing, after the flowpack has been opened by peeling the fin seal, the reclosing of the flowpack by unfolding the lower-end portion and folding the upper-end portion of the film onto the pressure-sensitive adhesive for forming a lap seal.

1 . Reclosable flowpack ( 1 ) comprising:
 a film ( 6 ) comprising one or more polymeric layer(s),   a top fold ( 12 ), a flap fold ( 13 ) and a flap ( 10 ), said flap comprising a peelable fin seal ( 2 ) joining an upper-end portion ( 5 ) and a lower-end portion ( 8 ) of said film ( 6 ),   two peelable cross seals ( 7 ) closing both ends of the flowpack ( 1 ),   a pressure-sensitive adhesive ( 3 ),   
       the position of said pressure-sensitive adhesive ( 3 ) and said flap ( 10 ) allowing, after the flowpack has been opened by peeling the fin seal ( 2 ), the reclosing of the flowpack ( 1 ) by unfolding the lower-end portion ( 8 ) and folding the upper-end portion ( 5 ) of the film ( 6 ) onto the pressure-sensitive adhesive ( 3 ) for forming a lap seal. 
     
     
         2 . Reclosable flowpack ( 1 ) according to  claim 1 , characterised in that the pressure-sensitive adhesive ( 3 ) is located on the external surface of the flowpack ( 1 ), under the flap ( 10 ). 
     
     
         3 . Reclosable flowpack ( 1 ) according to  claim 1 , characterised in that the pressure-sensitive adhesive ( 3 ) is protected by a transfer tape ( 4 ). 
     
     
         4 . Reclosable flowpack ( 1 ) according to  claim 1 , characterised in that the lengths of the lower-end portion ( 8 ) and upper-end portion ( 5 ) of the flap ( 10 ), and the distance between the top fold ( 12 ) and the flap fold ( 13 ) are selected so that, when reclosed, said lower-end portion ( 8 ) remains unfolded. 
     
     
         5 . Reclosable flowpack according to  claim 1 , characterised in that the pressure-sensitive adhesive ( 3 ) is in contact with the flap fold ( 13 ). 
     
     
         6 . Reclosable flowpack according to  claim 1 , characterised in that the cross seals ( 7 ) join the edge of the flap ( 10 ) to the external side of the flowpack ( 1 ). 
     
     
         7 . Reclosable flowpack ( 1 ) according to  claim 1 , characterised in that the film ( 6 ) comprises an oriented polymer layer and an aluminium layer. 
     
     
         8 . Reclosable flowpack according  claim 1 , characterised in that the opening force of the peelable fin seal according to ASTM D1876 is comprised between 5 and 25 N/15 mm, preferably between 10 and 20 N/15 mm. 
     
     
         9 . Reclosable flowpack according to  claim 1 , comprising a hanging hole ( 9 ) located in one of the cross seals ( 7 ). 
     
     
         10 . Reclosable flowpack according to  claim 1 , characterised in that the length of the upper-end portion ( 5 ) is larger than the length of the lower-end portion ( 8 ). 
     
     
         11 . Reclosable flowpack according to  claim 1 , characterised in that the length “z” of the lower-end portion ( 8 ) is comprised between 60 percent and 90 percent of the length “x” of the upper-end portion ( 5 ). 
     
     
         12 . Reclosable flowpack according to  claim 9 , characterised in that the upper-end portion ( 5 ) of the flap ( 10 ) hanging out of the lower-end portion ( 8 ) of the flap is peelably sealed on the external surface of the flowpack ( 1 ). 
     
     
         13 . Reclosable flowpack according to  claim 1 , characterised in that the structure of the film ( 6 ) is selected from the group consisting of heat seal lacquer/PET/print layer/PE, or OPP/print layer/PE, or OPP/print layer/OPP, or print layer/OPP/metalized-OPP/seal layer and print layer/OPP/seal layer. 
     
     
         14 . Reclosable flowpack according to  claim 1 , characterised in that after opening and reclose, the flowpack is enlarged by the length of the upper-end portion ( 8 ) of the film. 
     
     
         15 . Reclosable flowpack according to  claim 1 , characterized in that the top fold ( 12 ) is spaced apart from the flap fold ( 13 ).