Pouch for retort-packaged food

Abstract

The present invention relates to a retort food pouch which, when constituted of materials provided with characteristics demanded of retort food pouches, is capable of opening appropriately, and of appropriately affixing to another container as a pour spout when contents are transferred. The retort food pouch of the present invention is closed by an upper heat seal portion, a lower heat seal portion, and a side heat seal portion, and includes a notch portion formed to open toward a side edge on a top portion of the side heat seal portion so as to form a content pour spout at a cutting section where a corner portion between said notch portion and the upper heat seal portion is cut, and said notch portion comprises an approximately rectangular main body, opening toward the side edge, and an extended portion continuously extending from a lower side section of said main body portion; said extended portion is constituted to receive an upper edge portion of a wall forming the mouth of another container into which the retort food is to be transferred, and extends along its axial line in a direction approximately perpendicular to the side edge; and a precut is formed to extend from the main body portion toward the upper edge at an angle of 20-80 degrees with respect to the side edge, with said cutting performed along said precut.

1 . In a retort food pouch closed by an upper heat seal portion, a lower heat seal portion, and a side heat seal portion, and including a notch portion formed to open toward a side edge on a top portion of the side heat seal portion so as to form a content pour spout at a cutting section where a corner portion between said notch portion and the upper heat seal portion is cut, 
 said notch portion comprises an approximately rectangular main body, opening toward the side edge, and an extended portion continuously extending from a lower side section of said main body portion;    said extended portion is constituted to receive an upper edge portion of a wall forming the mouth of another container into which the retort food is to be transferred, and extending along its axial line in a direction approximately perpendicular to the side edge;    and a precut is formed to extend from the main body portion toward the upper edge at an angle of 20-80 degrees with respect to the side edge, with said cutting performed along said precut.    
   
   
       2 . The retort food pouch according to  claim 1 , comprising a horizontal section in which the upper edge of the main body portion extends at a right angle with respect to the side edge, and a vertical section extending approximately perpendicularly downward from the tip of the horizontal section, whereby the notch extends from a connecting portion which connects the horizontal section and the vertical section.  
   
   
       3 . The retort food pouch according to claims  1  or  2 , wherein the upper edge and the lower edge side edge sections of the main body portion are respectively inclined upward and downward.  
   
   
       4 . The retort food pouch according to any one of claims  1  through  3 , wherein the notch portion and the precut portion are formed in such a way that the length of the pour spout formed by cutting is 15-60 mm.  
   
   
       5 . The retort food pouch according to any one of claims  1  through  4 , wherein the side heat seal portion in which the notch portion is formed is a widened portion having a width which is wider than the side heat seal portion where no notch portion is formed.  
   
   
       6 . The retort food pouch according to  claim 5 , wherein the widened portion is formed 10-25 mm apart from the upper heat seal portion.  
   
   
       7 . The retort food pouch set forth in any one of claims  1  through  6 , comprising a metal laminate film having a multilayer structure of crystalline polypropylene resin film/adhesive resin layer including modified polypropylene/metal foil/adhesive layer/oriented nylon film/adhesive layer/polyester film.