Composite container, package body, and method for manufacturing composite container

Abstract

The objective of the present invention is to provide a composite container, as represented by a composite container which has a gas barrier property, an anti-moisture property, a shape retaining property, an anti-shock property, an easy-to-open property, and a resealing function, can be easily opened, and facilitates the extraction of the contents. A composite container having a gable top shape in which a paper board is attached to an outer peripheral surface of a pillow type bag constituted by a resin film and having an end seal section and a center seal section, wherein the paper board is attached to the resin film in at least a body portion of the composite container; in an upper part of the composite container, the resin film and the paper board are gazette-like folded while being attached to each other in such a manner that an end portion of the resin film protrudes from an end portion of the paper board, and the end portion of the resin film forms the end seal section; and an inner peripheral surface of the paper board of the composite container is attached at an entire surface or part thereof to the resin film below the end seal section protruding from the end portion of the paper board.

1 . A composite container having a gable top shape in which a paper board is attached to an outer peripheral surface of a pillow type bag constituted by a resin film and having an end seal section and a center seal section, wherein
 the paper board is attached to the resin film in at least a body portion of the composite container;   in an upper part of the composite container, the resin film and the paper board are gazette-like folded while being attached to each other in such a manner that an end portion of the resin film protrudes from an end portion of the paper board, and the end portion of the resin film forms the end seal section; and   an inner peripheral surface of the paper board of the composite container is attached at an entire surface or part thereof to the resin film below the end seal section protruding from the end portion of the paper board.   
     
     
         2 . The composite container according to  claim 1  above, wherein a spout for extracting container contents can be formed by cutting off at least one of left and right end portions of the end seal section and drawing out a portion that has been gazette-like folded. 
     
     
         3 . The composite container according to  claim 1 , wherein
 at least an inner surface of the resin film of the end seal section is sealed by an easy-to-open resin layer or an easy-to-open resin film, and   a spout for extracting the contents can be formed by peeling off a portion sealed by the easy-to-open resin layer or the easy-to-open resin film of the end seal section of a gazette portion, and drawing out a portion that has been gazette-like folded.   
     
     
         4 . The composite container according to  claim 1 ,wherein after the composite container has been opened, a portion forming the spout can be gazette-like folded again. 
     
     
         5 . The composite container according to  claim 1 , wherein a body portion cross section of the composite container has a quadrangular shape. 
     
     
         6 . The composite container according to  claim 1 , wherein
 in a bottom portion of the composite container, the paper board is not attached to the outer peripheral surface including the end seal section of the pillow type bag.   
     
     
         7 . The composite container according to  claim 1 , wherein
 a fold line for gazette-like folding is provided in the paper board.   
     
     
         8 . The composite container according to  claim 1 , wherein
 a fold line for forming an outer shape of the main body of the composite container is provided in the paper board.   
     
     
         9 . The composite container according to  claim 1 , wherein
 the end portion of the paper board abuts against a base of the center seal section, and the center seal section is exposed on the outer peripheral surface of the paper board from between the end portion of the paper board and the other end portion of the paper board.   
     
     
         10 . The composite container according to  claim 1 , wherein one end portion of the paper board abuts against a base of the center seal section, the center seal section overlaps the outer peripheral surface of this end portion, and the other end portion of the paper board covers the center seal section. 
     
     
         11 . The composite container according to  claim 1 , wherein a notch or a cut with a width equal to or greater than the center seal width is provided in the paper board at the bottom of the composite container. 
     
     
         12 . The composite container according to  claim 1 , wherein a non-attached portion is present between the paper board and the resin film in a portion constituting the body portion of the composite container. 
     
     
         13 . The composite container according to  claim 1  above, wherein the end seal section of the resin film at the upper part of the composite container has a vertical notch and a transverse notch and only part of the end seal section can be opened. 
     
     
         14 . The composite container according to  claim 1  above, wherein the paper board and the resin film of the composite container are attached such that the paper board and the resin film can be easily peeled off and separated. 
     
     
         15 . The composite container according to  claim 1  above, which is manufactured by
 using a vertical Form-Fill-Seal machine in which the resin film is unwound from a film roll, and shaped into a tube in the vertical direction, and center-sealed, and then upper and lower ends of each pitch are sealed and cut to manufacture a pillow bag, 
 overlapping and at least partially bonding, for each pitch, a sheet-shaped paper board to an outer peripheral surface of the tubular resin film, so that a resin film portion that is to form an end seal section at the upper part of the composite container is uncovered, and then 
 gazette-like folding the upper end portion of the tubular resin film while the paper board remains attached thereto. 
 
     
     
         16 . The composite container according to  claim 1 , which is manufactured by
 using a horizontal Form-Fill-Seal machine in which the resin film is unwound from a film roll, and shaped into a tube in the horizontal direction, and center-sealed, and then an upstream or downstream end of each pitch is sealed and cut to manufacture a pillow bag;   overlapping and at least partially bonding, for each pitch, a sheet-shaped paper board to an outer peripheral surface of the tubular resin film, so that a resin film portion that is to form an end seal section at the upper part of the composite container is uncovered, and then   gazette-like folding while the resin film and the paper board remain attached to each other.   
     
     
         17 . The composite container according to  claim 1 , which is manufactured by folding in a tubular shape a sheet-shaped composite sheet in which a paper board is attached to a resin film, the composite sheet being formed in a developed view shape such that when the paper board is folded, a tubular body portion and an end portion in a gable top shape at one end of the body portion are formed, and also being such that the resin film protrudes from the end portion of the paper board where a gazette portion is to be formed to form an end seal section when the paper board is folded and also protrudes from the other end portion of the paper board to form, at the time of end sealing, a container bottom surface which is not covered by the paper board, then center-sealing the composite sheet so that the resin film is in a tubular shape in a machine direction, gazette-like folding a portion of the resin film that is to form a container bottom surface and a composite sheet portion that is to form a container gable top portion while the resin film and the paper board remain attached to each other, and then end-sealing the protruded resin film. 
     
     
         18 . The composite container according to  claim 1 , which is manufactured by folding in a tubular shape a continuous composite sheet in which paper boards are attached to a resin film, the composite sheet being formed in a developed view shape such that when the paper board is folded, a tubular body portion and an end portion in a gable top shape at one end of the body portion are formed, and also being such that the resin film protrudes from the end portion of the paper board where a gazette portion is to be formed to form an end seal section when the paper board is folded and also protrudes from the other end portion of the paper board to form, at the time of end sealing, a container bottom surface which is not covered by the paper board, then center-sealing the composite sheet such that the resin film is in a tubular shape in a machine direction, gazette-like folding a portion of the resin film that is to form a container bottom surface and a composite sheet portion that is to form a container gable top portion while the resin film and the paper board remain attached to each other, and then end-sealing the protruded resin film. 
     
     
         19 . A package body in which the composite container according to  claim 1  above is filled with contents. 
     
     
         20 . A method for manufacturing a composite container,
 the method comprising:   using a vertical Form-Fill-Seal machine in which a resin film is unwound from a film roll, and shaped into a tube in a vertical direction, and center-sealed, and then upper and lower ends of each pitch are sealed and cut to manufacture a pillow bag,   overlapping and at least partially bonding, for each pitch, a sheet-shaped paper board to an outer peripheral surface of the tubular resin film, so that a resin film portion that is to form an end seal section at the upper part of the composite container is uncovered, and then   gazette-like folding an upper end portion of the tubular resin film while the paper board remains attached thereto.   
     
     
         21 . A method for manufacturing a composite container, the method comprising:
 using a horizontal Form-Fill-Seal machine in which a resin film is unwound from a film roll, and shaped into a tube in a horizontal direction, and center-sealed, and an upstream or downstream end of each pitch is sealed and cut to manufacture a pillow bag,   overlapping and at least partially bonding, for each pitch, a sheet-shaped paper board to an outer peripheral surface of the tubular resin film, so that a resin film portion that is to form an end seal section at an upper part of the composite container is uncovered, and then   gazette-like folding while the resin film and the paper board remain attached to each other.   
     
     
         22 . A method for manufacturing a composite container,
 the method comprising:   folding in a tubular shape a sheet-shaped composite sheet in which a paper board is attached to a resin film, the composite sheet being formed in a developed view shape such that when the paper board is folded, a tubular body portion and an end portion in a gable top shape at one end of the body portion are formed, and also being such that the resin film protrudes from the end portion of the paper board where a gazette portion is to be formed to form an end seal section when the paper board is folded and also protrudes from the other end portion of the paper board to form, at the time of end sealing, a container bottom surface which is not covered by the paper board, then center-sealing the composite sheet such that the resin film is in a tubular shape in a machine direction, gazette-like folding a portion of the resin film that is to form a container bottom surface and a composite sheet portion that is to form a container gable top portion while the resin film and the paper board remain attached to each other, and then end-sealing the protruding resin film.   
     
     
         23 . A method for manufacturing a composite container,
 the method comprising:   folding in a tubular shape a continuous composite sheet in which paper boards are attached to a resin film, the composite sheet being formed in a developed view shape such that when the paper board is folded, a tubular body portion and an end portion in a gable top shape at one end of the body portion are formed, and also being such that the resin film protrudes from the end portion of the paper board where a gazette portion is to be formed to form an end seal section when the paper board is folded and also protrudes from the other end portion of the paper board to form, at the time of end sealing, a container bottom surface which is not covered by the paper board, then center-sealing the composite sheet such that the resin film is in a tubular shape in a machine direction, gazette-like folding a portion of the resin film that is to form a container bottom surface and a composite sheet portion that is to form a container gable top portion while the resin film and the paper board remain attached to each other, and then end-sealing the protruding resin film.