JP5810586B2 - Box-shaped container - Google Patents

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. On the other hand, an object of this invention is to make the refill bag accommodated in a box-shaped container into a product made from a film, and to be able to open a refill bag reliably by a simpler structure.

  When the inventor uses a film gusset bag as the bag to be accommodated in the container body, the straight cut property at the time of opening is remarkably improved by making the film forming the gusset bag into a laminated film having a specific film layer. In addition, it has been found that sufficient strength can be obtained to accommodate a powdery substance having a high bulk density such as a powder detergent in the bag.

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,
A seal part extending in the vertical direction at the center of the width direction of the gusset bag, or a seal start part extending in the vertical direction at the corner part of the gusset bag,
A box-shaped container having a stretched film layer in which the film forming the gusset bag is a laminated film, the laminated film being tearable in the width direction of the gusset bag, and a stretched film layer oriented in the vertical direction of the gusset bag. provide.

  According to the box-shaped container of the present invention, the film forming the gusset bag filled with the powdery substance is oriented in the vertical direction of the gusset bag and the laterally uniaxially stretched film layer having tearability in the width direction of the gusset bag. Since the uniaxially stretched film layer is a laminated film, the gusset bag is excellent in tearability in the width direction. Therefore, the bag 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.

  Moreover, the opening surface of the opened gusset bag is maintained in a large and wide open state by the gusset bag being strongly pressed against the container body by the powdery substance as the contents. 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 the box-shaped container of the embodiment. FIG. 2 is a perspective view of the box-shaped container of FIG. 1 and a gusset bag accommodated therein. FIG. 3 is a perspective view of a gusset bag accommodated in the box-shaped container of FIG. 1. 4A is a perspective view of the box-shaped container of FIG. 1 with the container body opened. 4B is a perspective view of a state in which the gusset bag is gripped before the opening of the bag of the box-shaped container of FIG. 1 is started. FIG. 4C is a perspective view of the box-shaped container of FIG. 1 after opening the gusset bag. FIG. 5 is a perspective view of a different example of a gusset bag that can be used in the present invention. FIG. 6 is an explanatory diagram of the weakness of the fold line of the gusset.

  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 box-shaped container 1 according to an embodiment of the present invention. In this box-shaped container 1, a gusset bag 10 A made of a film filled with a powdery substance shown in FIG. 2 is accommodated in a rectangular container body 30, and an opening of the container body 30 is closed with a lid 40. FIG. 3 is a perspective view of the gusset bag 10A viewed from the lateral gusset side.

  This gusset bag 10A has a general horizontal gusset shape, and a film sheet is formed into a cylindrical shape by vertical sealing such as heat sealing, and guides are formed so that gussets 11 are formed on both sides. Is applied to fold the cylindrical body, the top seal 13 is formed at the upper end, and the bottom seal is formed at the lower end. Thereby, the seal | sticker 12 extended in the up-down direction will be formed in the center part of the width direction of a gusset bag. 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.

  The gusset 11 is preferably 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. When the top seal 13 and the bottom seal are formed without strong contact, and the gusset 11 of the gusset bag 10A is placed on the flat plate 50 as shown in FIG. 6, the distance L between the fold line 11a and the flat plate 50 is 2 mm or less. It is preferable that As a result, when 700 g / L or more of powder is put into the gusset bag 10A and put into the box-shaped container body, the bag is easily spread on the inner wall of the container body, and after opening the gusset bag as described later It is possible to make it difficult to reduce the opening surface.

  The vertical seal 12 is provided with a notch 16 cut into a V shape as an opening start portion. In the present invention, an I-shaped notch, a U-shaped notch, a magic cut or the like may be formed as the opening start portion.

  As shown in FIG. 4B, when the upper end of the gusset bag 10A is gripped by the hand hung on the opening edge 31 of the container body 30, the bottom surface 18 of the gusset bag 10A is formed. Is raised from the bottom surface 32 of the container body 30. In this case, the height H at which the bottom surface 18 of the 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 bag is lifted or not, if the notch 16 is torn outside the container body 30 when the gusset bag 10A is opened, the bag 10A can be easily torn linearly.

  The notch 16 is formed at a position where the opening surface of the opened gusset bag 10A is rubbed between the opening surface of the container body 30 and the upper surface of the contents in the gusset bag 10A. Thereby, when the gusset bag 10A is strongly pressed against the container 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 the 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.

  As shown in FIG. 2, the gusset bag 10 </ b> A is preferably subjected to laser processing that improves easy cutability along a line in the width direction of the bag passing through the notch 16. In the figure, reference numeral 20 represents a laser processing line subjected to this laser processing.

  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.

  It is preferable that the circumference of the opening when opened at the upper end of the gusset bag 10 </ b> A is substantially the same as the circumference of the container body 30. As a result, as shown in FIG. 4C, after opening the gusset bag 10 </ b> A, the powdery substance P in the bag 10 </ b> A tries to spread, so that the substantially entire surface of the peripheral surface of the gusset bag 10 </ b> A is pressed against the inner wall of the container body 30. It is done. 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 The circumference of the opening of the bag 10A and the circumference of the inner dimension of the container body 30 are about the same so that the upper end of the bag cannot be slack.

  In this box-shaped container 1, the film forming the gusset bag 10A has a stretched film layer having tearability in the width direction (X direction in FIG. 2) of the gusset bag 10A, and the vertical direction of the gusset bag (Y in FIG. 2). The main feature is that it is a laminated film having a stretched film layer oriented in the direction).

  Here, as the stretched film layer having tearability in the X direction, for example, a stretched film of high-density polyethylene (HDPE) can be used, and Karariyan Y (manufactured by Toyo Chemical Co., Ltd.) is used as this commercially available product. can do. 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 to 50 μm.

  On the other hand, the stretched film layer whose orientation direction is the vertical direction of the gusset bag (the Y direction in FIG. 2) is preferably used as the inner sealant layer, especially easy to cut for linear low density polyethylene (L-LDPE). A uniaxially stretched film layer subjected to is preferred. The layer thickness of the stretched film layer is preferably 15 to 50 μm.

  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. In addition, 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 contains, for example, a powder detergent having a bulk density of 700 g / L or more in the bag. When the action of spreading outward works, it can be opened neatly.

  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 structure 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 to 200 μm, more preferably 100 to 150 μm so that the film has a firmness to the extent that the gusset bag 10A is self-supporting even in the absence of contents. 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.

  On the other hand, 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.

  4A, the lid 40 is opened, and the upper part of the bag 10A is pulled out from the container body 30 and hung on the opening edge 31 of the container body 30 as shown in FIG. 4B. The upper end of the gusset bag 10A is grasped by hand and the bottom surface 18 of the gusset bag 10A is lifted so that it floats about 0 to 50 mm from the bottom surface 32 of the container body 30. Tear in the direction. By this tearing, 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.

  As mentioned above, although one Example of this invention was described about the box-shaped container 1 shown in FIG. 1, this invention can take a various aspect. For example, as the gusset bag, as shown in FIG. 5, a seal 12 extending in the vertical direction may be formed on one side of the corner of the gusset bag 10B, and an opening start portion may be provided there. In addition, as the gusset bag, a bottom gusset type bag having a gusset at the bottom can also be used.

  In addition, as a powdery substance with which the bag 10B is filled, granule or powdery powdery substances such as powder detergent, sugar, and salt can be exemplified. The bulk density of the powdered material may be 700 g / L or more.

  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 Gazette bag 11 Machi 11a Crease line 12 Vertical seal 13 Top seal 16 Notch 18 Bag bottom surface 20 Laser processing line 30 Container body 31 Container body opening edge 32 Container body bottom surface 40 Lid 50 Flat plate H Height at which bottom of bag rises from bottom of container body L Distance between crease and flat plate P Powdery substance X Tear direction Y Orientation direction

Claims (6)

A gusset bag for refilling made of a film filled with a powdery substance, a box-shaped container body containing the gusset bag, a box-shaped container provided with a lid covering the opening of the container body,
A seal part extending in the vertical direction at the center of the width direction of the gusset bag, or a seal start part extending in the vertical direction at the corner part of the gusset bag,
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 as an outer layer or an intermediate layer of the laminated film, and is oriented in the vertical direction of the gusset bag. A box-shaped container having a stretched film layer as an inner sealant layer of the laminated film . 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 bag is 700 g / L or more. A gusset bag made of a film filled with a powdery substance, housed in a box-shaped container provided with a lid covering the opening of the container-shaped container body and the container body,
A seal part extending in the vertical direction at the center of the width direction of the gusset bag, or a seal start part extending in the vertical direction at the corner part of the gusset bag,
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 as an outer layer or an intermediate layer of the laminated film, and is oriented in the vertical direction of the gusset bag. A gusset bag having a stretched film layer as an inner sealant layer of the laminated film.

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