JP2013252871A - Box-shaped container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a box-shaped container accommodating a refill bag which is designed so that the refill bag is formed of a film, and to improve unsealing performance of the bag.SOLUTION: A box-shaped container 1 comprises: a box-shaped container body 30 accommodating a gusset bag 10A formed of a film which is filled with a powdery substance P; and a lid 40 covering the opening of the container body 30. The gusset bag 10A has a sealed portion 12 extending vertically, and an unsealing initiation portion such as a notch 16 is formed in the sealed portion 12. A film reinforcing member 25 is stuck to the upper end side film surface of the gusset bag 10A from the unsealing initiation portion along the lower end edge of a top seal 13 closing the upper end of the gusset bag 10A. A film forming the gusset bag 10A is a laminated film. The laminated film includes: an extended film layer that has ability to be torn in the width direction of the gusset bag 10A; and an extended film layer which is oriented in the vertical direction of the gusset bag 10A.

Description

  The present invention relates to a box-shaped container suitable as a container for powdery substances such as powder detergents.

  As a container used for granules or powdery powder substances such as powder detergents, a box-shaped container made of a paperboard material such as a paperboard or a plastic sheet is used (Patent Document 1). This box-shaped container is usually discarded after the contents are used.

On the other hand, from the viewpoint of resource saving, it is known that the box-shaped container is repeatedly used by filling the refill bag with the contents and putting the bag into the box-shaped container. To make the refill bag easier to open, the cardboard is made of cardboard, and the peeling claw that protrudes outward is provided on the upper side of the side, and a peeling guide tape is provided on the part corresponding to the peeling claw. In order to fold the bag, it has been proposed to provide a folding line at the bottom of the bag (Patent Document 2).
In addition, the refill bag is a paper or plastic film gusset bag, a box-shaped container main body that accommodates the refill bag is provided with a locking portion for locking the opening edge of the refill bag, It has been proposed to prevent the opening from being squeezed (Patent Document 3).

Japanese Utility Model Publication No. 6-1221 Japanese Utility Model Publication No. 6-32364 JP 2010-143635 A

  However, if a cardboard made of cardboard is used as the refill bag, the folding line is processed on the bag body, and a tearing claw or tearing guide tape for opening is provided, the manufacturing cost of the bag increases. When the refill bag is made of a plastic film, the refill bag may be torn and opened by forming a notch at the edge, but the tear line is not stable. In addition, the plastic film may be stretched and cannot be torn. Then, the subject of this invention is related with making it possible to open a refill bag reliably by a more simple structure about the box-shaped container which accommodated the refill bag made from a film.

  In the case where the bag accommodated in the box-shaped container is a gusset bag made of a film, the inventor sets the film forming the gusset bag as a laminated film having a specific film layer, and a specific part of the surface of the film. When the film reinforcing member is attached to the bag, the straight cut performance at the time of opening is remarkably improved, and the use of the laminated film is sufficient to contain a powdery substance having a high bulk density such as a powder detergent in the bag. The inventors have found that strength can be obtained and completed the present invention.

That is, the present invention is a gusset bag made of a film filled with a powdery substance, a box-shaped container body containing the gusset bag, and a box-shaped container provided with a lid that covers the opening of the container body,
The gusset bag has a seal portion extending in the vertical direction at the center portion in the width direction of the gusset bag or the corner portion of the gusset bag, and has an opening start portion at the seal portion,
The film forming the gusset bag is a laminated film, and the laminated film has a stretched film layer having tearability in the width direction of the gusset bag, and a stretched film layer oriented in the vertical direction of the gusset bag,
Provided is a box-shaped container in which a film reinforcing member is adhered to a film surface on the upper end side from an opening start portion of a gusset bag along a lower end edge of a top seal that closes the upper end portion of the gusset bag.

The gusset bag accommodated in the box-shaped container of the present invention has a stretched film layer in which a film forming the gusset bag is tearable in the width direction of the gusset bag and a stretched film layer oriented in the vertical direction of the gusset bag. Since it is a laminated film, it is excellent in tearing in the width direction. Further, a film reinforcing member is attached to the surface of the film along the lower end edge of the top seal from the opening start portion on the upper end side of the gusset bag. Therefore, the gusset bag accommodated in the box-shaped container of the present invention can be easily opened by tearing from the opening start portion.
The gusset bag has sufficient film strength to accommodate a powder detergent or the like.

  Furthermore, after the gusset bag is opened in the box-shaped container of the present invention, the peripheral surface of the gusset bag is strongly pressed against the container body by the powdery substance that is the contents of the gusset bag, so that the opening surface of the gusset bag becomes large. Maintained in a wide open state. Therefore, the contents can be easily taken out. Therefore, it is not necessary to provide the container body with a notch, a hole, a pressing member, or the like for hooking the bag on the inner wall of the container body so that the bag opens greatly in the container body.

FIG. 1 is a perspective view of a gusset bag accommodated in the box-shaped container of the embodiment. FIG. 2 is a perspective view of the box-shaped container (a) with the lid closed and the box-shaped container (b) with the lid open. FIG. 3 is an explanatory view of the weakness of the folds of the gusset bag. FIG. 4A is a perspective view of a state in which a lid of a box-shaped container containing a gusset bag is opened. FIG. 4B is a perspective view of a state in which the gusset bag of FIG. 4A is gripped. FIG. 4C is a perspective view of the box-shaped container after the gusset bag of FIG. 4A is opened. FIG. 5 is a perspective view of a gusset bag that can be used in the present invention. FIG. 6 is a perspective view of a gusset bag that can be used in the present invention.

  Hereinafter, the present invention will be specifically described with reference to the drawings. In each figure, the same numerals indicate the same or equivalent components.

  FIG. 1 is a perspective view of a gusset bag 10A filled with a powdery substance, which is accommodated in a box-shaped container according to an embodiment of the present invention. This gusset bag 10A is accommodated in a box-shaped container shown in FIG. 2, where it is opened as described later, and a powdery substance is used.

  The gusset bag 10A has a substantially horizontal gusset shape, and a film sheet is formed into a cylindrical shape by vertical sealing such as heat sealing, and guides are applied so that gussets 11 are formed on both sides. The cylindrical body is folded, a top seal 13 is formed at the upper end, and a bottom seal is formed at the lower end. Thereby, the seal | sticker part 12 extended in the up-down direction will be formed in the center part of the width direction of 10 A of gusset bags. In addition, the powdery substance accommodated in the gusset bag 10 </ b> A is filled between the formation of the bottom seal and the formation of the top seal 13.

  It is preferable that the gusset 11 is formed with a weak fold line so that there is no fold line in the bent portion in the vertical direction or the fold line is partially attached. More specifically, the top seal 13 and the bottom seal are formed without strongly applying the regions which are both sides of the gusset bag 10A to the guide portion for forming the gusset 11, and the gusset bag 10A is formed as shown in FIG. When the gusset 11 is placed on the flat plate 50 without filling the contents, it is preferable that the distance L between the crease 11a and the flat plate 50 be 2 mm or less. Thereby, when powder with a bulk density of 700 g / L or more is put into the gusset bag 10A and put into a box-shaped container body, the peripheral surface of the gusset bag is easily pressed against the inner wall of the container body, and will be described later. As described above, it is possible to make the opening surface after opening the gusset bag difficult to shrink.

  The circumferential length of the opening when the gusset bag 10A is opened in the width direction of the bag, that is, the circumferential length of the trunk portion of the gusset bag is substantially the same as the inner circumferential length of the container body 30. Is preferred. As a result, as shown in FIG. 4C, after opening the gusset bag 10A in the container body 30, the powdery substance P in the bag 10A tries to spread, so that the substantially entire surface of the peripheral surface of the gusset bag 10A is the container. It is pressed against the inner wall of the main body 30. For this reason, the opening shape of the gusset bag 10A is wide and stable, and the powdery substance P can be easily taken out with the measuring spoon. Here, about the same dimension means that the upper end opening portion of the bag 10A falls inward due to the peripheral length of the upper end opening portion of the bag 10A being excessively short with respect to the inner peripheral length of the container body 30. In addition, the case where the bag 10A has a large slack due to the excessively long circumference of the upper end opening of the bag 10A is not included, the upper end opening of the bag 10A does not fall inward within the container body 30, and the bag 10A It means that the circumference of the upper end opening of the bag 10A and the inner circumference of the container body 30 are about the same so that the upper end opening of the bag cannot be slack.

  On the other hand, the vertical seal portion 12 is provided with a notch 16 cut into a V shape as an opening start portion. In the present invention, as the opening start portion, a notch cut into an I-shape, a notch cut into a U-shape, “magic cut” (registered trademark) with numerous minute holes, etc. It may be formed.

  As shown in FIG. 4B, the formation position of the notch 16 in the vertical seal portion 12 is the upper end portion of the gusset bag 10 </ b> A with the hand hung on the opening edge 31 of the container body 30, and the height of the gusset bag 10 </ b> A. When a portion whose direction is about the same as that of the notch 16 is gripped, the bottom surface 18 of the gusset bag 10 </ b> A is lifted from the bottom surface 32 of the container body 30. In this case, the height H at which the bottom surface 18 of the gusset bag 10A is lifted from the bottom surface 32 of the container body 30 is preferably 50 mm or less. In the present invention, it is not necessary to float, but more preferably 10 mm or more. . Regardless of whether the gusset bag 10A is opened or not, if the notch 16 is torn outside the container body 30 when the gusset bag 10A is opened, the gusset bag 10A can be easily torn linearly. The notch 16 is formed at a position where the bottom surface 18 of the gusset bag 10A is lifted from the bottom surface 32 of the container body 30 when the gusset bag 10A is gripped as described above. When 10A is returned to the bottom surface 32 of the container body 30, the opening surface of the gusset bag 10A can be rubbed between the opening surface of the container body 30 and the upper surface of the contents in the gusset bag 10A. When the peripheral surface of the bag 10A is strongly pressed against the container main body 30 by the contents, the opening surface of the gusset bag 10A is maintained in a large and wide open state, and the contents can be easily taken out. On the other hand, when the opening surface of the gusset bag 10A opened from the notch 16 exceeds the height of the opening surface of the container body 30, the upper end portion of the gusset bag 10A is not folded when the lid 40 of the container body 30 is closed. Therefore, the opening surface of the gusset bag 10A cannot be maintained in a state where it is greatly opened. On the other hand, if the formation position of the notch 16 is too low, it becomes difficult to take out the notch 16 to the outside of the container body 30 when the gusset bag 10A is opened, and it becomes difficult to open the gusset bag 10A in a straight line.

  The position of the upper end portion of the gusset bag 10A in a state where the gusset bag 10A filled with the contents is accommodated in the container body 30 and the upper portion of the gusset bag 10A is extended upward is 10 to 50 mm from the opening surface of the container body 30. A position protruding upward is preferred. Thereby, it becomes easy to grip the upper and lower sides of the notch 16 and tear the gusset bag 10A.

  A band-shaped film reinforcing member 25 is attached to the film surface on the upper end side of the gusset bag 10A from the notch 16 along the lower edge of the top seal 13 that closes the upper end portion of the gusset bag 10A. 4B, when the gusset bag 10A accommodated in the container main body 30 is picked up and the film of the gusset bag 10A is torn from the notch 16, the film reinforcing member 25 The film can be easily teared linearly along the lower edge, and the tear line can be prevented from undulating.

  In this case, the distance between the opening start point (that is, the tip of the V-shaped notch 16) at the opening start portion and the film reinforcing member 25 is preferably within 10 mm from the viewpoint of further improving the ease of opening, More preferably, it is within 5 mm. The distance between the opening start point and the film reinforcing member 25 is 0 mm or more. That is, the lower end edge of the film reinforcing member 25 and the opening start point may overlap. The band width L2 of the band-shaped film reinforcing member 25 is preferably 3 mm or more from the viewpoint of sufficiently obtaining the sticking effect.

  In order to open a packaging material made of film, it is generally known to stick a reinforcing tape called a tear tape to a packaging material made of film. However, the film reinforcing member 25 of the gusset bag 10A does not tear the film sheet of the bag body to be opened with the film width of the reinforcing member, but the lower end of the film reinforcing member 25. The difference is that the film sheet of the bag body is torn along the edge.

  As the film reinforcing member 25, a film in which a film such as OPP (biaxially stretched polypropylene), PET, ONy (biaxially stretched nylon) or the like is attached with an adhesive can be used. These film thicknesses are preferably 12 μm or more from the viewpoint of improving the tearing straightness of the opening line when opening from the notch 16, and when the top seal 13 is sealed, the seal bar and the film should not be stepped. 80 μm or less is preferable from the point, and 50 μm is more preferable.

  Further, in the gusset bag 10 </ b> A, a laser processing line 20 that improves easy cutability may be formed along the lower edge of the film reinforcing member 25 between the opening start point of the notch 16 and the film reinforcing member 25. Preferred (FIG. 1).

  As the laser processing for forming the laser processing line 20, it is preferable that the formation film of the gusset bag 10A be damaged by laser irradiation.

  On the other hand, the film forming the gusset bag 10A is oriented in the stretched film layer having tearability in the width direction (X direction in FIG. 1) of the gusset bag 10A and the vertical direction (Y direction in FIG. 1) of the gusset bag 10A. It is a laminated film having a stretched film layer.

  Here, as the stretched film layer having tearability in the X direction, for example, a laterally uniaxially stretched film of high-density polyethylene (HDPE) can be used, and as this commercially available product, Karariyan Y (manufactured by Toyo Chemical Co., Ltd.), etc. Can be used. Moreover, it is preferable to use the stretched film layer which has tearability in a X direction as an outer layer or intermediate | middle layer of the laminated | multilayer film which forms 10 A of gusset bags. The layer thickness of the stretched film layer is preferably 15 μm or more and 50 μm or less.

  The stretched film layer with the Y direction as the orientation direction is preferably used as the inner sealant layer, and in particular, a longitudinal uniaxially stretched film layer obtained by subjecting linear low density polyethylene (L-LDPE) to an easy cut process is preferred. The layer thickness of the stretched film layer is preferably 15 μm or more and 50 μm or less.

  As described above, by using a stretched film layer having tearability in the X direction as one layer of the laminated film forming the gusset bag 10A, the gusset bag 10A is formed with gussets 11 on both sides. From the notch 16, it can be easily opened linearly. Further, by using a stretched film layer oriented in the Y direction as one layer of the laminated film forming the gusset bag 10A, the gusset bag 10A contains, for example, a powder detergent having a bulk density of 700 g / L or more. When the action of spreading outward is exerted, the opening can be made clean.

  The laminated film forming the gusset bag 10A may be a laminated film of polyamide, polyolefin, polyester resin film layer or the like. In that case, the layer configuration is preferably a combination of lamination of polyamide, polyester resin film layer and polyolefin resin film layer.

  In addition, it is preferable that this laminated film does not include a paper layer or an aluminum foil from the point that, after opening, the bag is folded inward by folding the film and the opening area is reduced.

  Moreover, you may provide in this laminated film the layer which improves printing appropriateness, and the layer which improves sealing performance as needed.

  The total thickness of the laminated film is preferably 40 μm or more, more preferably 100 μm or more, preferably 200 μm or less, so that the film has a firmness to the extent that the gusset bag 10A is self-supporting even in the absence of contents. Preferably it is 150 micrometers or less. Thereby, after opening the gusset bag 10A, even if the powdery substance is reduced with the use of the powdery substance in the gusset bag 10A, and the position where the powdery substance presses the gusset bag 10A against the inner wall of the container body 30 is lowered, The gusset bag 10A maintains the open state, and the ease of taking out the powdery substance can be maintained.

  In the box-shaped container of the embodiment of the present invention, the above-described gusset bag 10A has a container body 30 of a box-shaped container having an opening on the upper surface and a lid 40 covering the opening as shown in FIG. Is housed in.

  Here, the container body 30 can be a rectangular parallelepiped container formed using a paperboard-like material such as paperboard or a plastic sheet.

  Moreover, the lid | cover 40 should just cover the upper surface opening part of the container main body 30, for example, the one edge | side can couple | bond with the back surface of the container main body 30, and hinge shape.

  As shown in FIG. 4A, the box-shaped container is used by opening the lid 40 of the box-shaped container 1, and as shown in FIG. 4B, pulling out the upper part of the gusset bag 10 </ b> A from the container body 30 and opening the container body 30. A notch drawn by gripping the upper end of the gusset bag 10 </ b> A with a hand hung on the edge 31 so that the bottom surface 18 of the gusset bag 10 </ b> A is lifted from the bottom surface 32 of the container body 30 by about 0 to 50 mm and pulled out to the outside of the container body 30. 16 torn the gusset bag 10A in its width direction. By pulling and tearing in this way, it becomes easy to tear the gusset bag 10A linearly. It is also possible to tear the gusset bag 10A in the width direction from the notch 16 without lifting the gusset bag 10A from the bottom surface 32 of the container body 30.

  By tearing from the notch 16, the upper end of the gusset bag 10A is removed over its entire width. Then, as shown in FIG. 4C, the gusset bag 10A remaining in the container main body 30 is pressed against the inner wall of the container main body 30 by the powdery substance P in the gusset bag 10A as shown by an arrow, and widely opened.

  When the powdery substance P is lost due to the use of the powdery substance P in the gusset bag 10A, a new refillable gusset bag 10A filled with the powdery substance P is prepared, and the previous gusset bag 10A is prepared. Replace with.

  Examples of the powdery substance P filled in the gusset bag 10A may include granules or powdered powdery substances such as powder detergent, sugar and salt. The bulk density of the powdery substance P may be 700 g / L or more.

  As mentioned above, although one Example of this invention was described about the box-shaped container 1 which accommodated the gusset bag 10A shown in FIG. 1, this invention can take a various aspect. For example, as shown in FIG. 5, the gusset bag accommodated in the box-shaped container of the present invention is formed with a seal portion 12 extending in the vertical direction on one side of the corner of the gusset bag 10B, and opening a notch 16 or the like there. A starting portion may be provided, and the film reinforcing member 25 may be adhered to the top seal 13 side of the notch 16 in the vicinity of the notch 16.

  A gusset bag 10 </ b> C shown in FIG. 6 is obtained by expanding the seal width of the top seal 13 of the gusset bag 10 </ b> A shown in FIG. 1 and overlapping the lower end edge of the film reinforcing member 25 and the lower end edge of the top seal 13. This is preferable because straight tearability can be further improved.

  In addition, as the gusset bag, a bottom gusset type bag having a gusset at the bottom can also be used.

  The box-shaped container of the present invention is useful as a container for powdered substances such as powder detergents.

DESCRIPTION OF SYMBOLS 1 Box-shaped container 10A, 10B, 10C Gazette bag 11 Machi 11a Folding line 12 Vertical seal part 13 Top seal 16 Notch 18 Bag bottom surface 20 Laser processing line 25 Film reinforcement member 30 Container main body 31 Opening edge 32 of container main body Container Bottom of the body 40 Lid 50 Flat plate H Height at which the bottom of the bag rises from the bottom of the container body L Distance between the crease and the flat plate P Powdery substance X Tear direction Y Orientation direction

Claims (5)

A gusset bag made of a film filled with a powdery substance, a box-shaped container body containing the gusset bag, and a box-shaped container provided with a lid covering the opening of the container body,
The gusset bag has a seal portion extending in the vertical direction at the center portion in the width direction of the gusset bag or the corner portion of the gusset bag, and has an opening start portion at the seal portion,
The film forming the gusset bag is a laminated film, and the laminated film has a stretched film layer having tearability in the width direction of the gusset bag, and a stretched film layer oriented in the vertical direction of the gusset bag,
A box-shaped container in which a film reinforcing member is attached to a film surface on the upper end side from the opening start portion of the gusset bag along the lower end edge of the top seal that closes the upper end portion of the gusset bag.   The box-shaped container according to claim 1, wherein the film thickness of the laminated film forming the gusset bag is 40 to 200 µm.   The box-shaped container according to claim 1 or 2, wherein there are no creases at the folds of the gussets on both sides of the gusset bag.   The box-shaped container according to claim 1 or 2, wherein a crease is attached to a part of a fold of the gusset on both sides of the gusset bag.   The box-shaped container according to any one of claims 1 to 4, wherein the bulk density of the powdery substance contained in the gusset bag is 700 g / L or more.

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