JP2013035550A - Bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a low-cost bag, which is to be housed in a box-shaped container and to be used as a refill bag and which is configured to be easily opened in the box-shaped container and keep the largely opened state after being opened.SOLUTION: The bag 10A made of a film is filled with powdered material and to be housed in the box-shaped container body 30 having an opening in a top surface and a lid 40 for covering the opening. The bag 10A includes: a gusset 11 at a bottom; an upper part having a flat bag shape; and a bottom end having a narrower outer width of the bag than an upper end. An easy-to-open process area 21 extending in the width direction of the bag is provided on the upper part of the bag 10A, wherein the upper end edge 21a or lower end edge 21b of the easy-to-open process area 21 overlaps with the lower end edge 13b of the top seal 13 of the bag 10A, or the easy-to-open process area 21 overlaps with the lower end edge 13b of the top seal 13.

Description

  The present invention relates to a bag filled with a powdery substance such as a powder detergent and suitable as a refill bag used in a box-shaped container.

  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, in order to save resources, the contents are accommodated in a self-supporting bag with a chuck (Patent Document 2), the contents are filled in a refill bag, and the whole bag is put into a box-shaped container. It is known to repeatedly use box-shaped containers by putting them in. In such a combination of a refill bag and a box-shaped container, the refill bag is made of cardboard, and in order to improve its ease of opening, a peeling claw projecting outward on the upper side of the side surface, and its pulling It has been proposed to provide a peeling guide tape at a portion corresponding to the peeling claw and to provide a folding line at the bottom of the bag so that the bag can be folded compactly when discarded (Patent Document 3). In addition, the refill bag is made of paper or plastic film, and the box-shaped container body that accommodates the refill bag is provided with a locking portion that locks the opening edge of the refill bag, and the opening of the refill bag is a lid. It has been proposed to avoid this (Patent Document 4).

Japanese Utility Model Publication No. 6-1221 Japanese Patent No. 4043229 Japanese Utility Model Publication No. 6-32364 JP 2010-143635 A

  However, a bag with a chuck is expensive to manufacture. Even when the refill bag is made of cardboard, the bag made of cardboard is bent and a peeling claw or a peeling guide tape is provided, the manufacturing cost of the bag becomes high. 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 at the time of tearing and may not be torn. Furthermore, when a refill bag made of plastic film is used in combination with a box-shaped container, it is cumbersome to lock the opening edge of the refill bag to the box-shaped container after opening the refill bag. is there.

  On the other hand, the present invention enables a bag that can be accommodated in a box-shaped container and used as a refill bag to be easily opened even in the box-shaped container, and maintains a large open state after opening. And it aims at enabling such a bag to be provided at low cost.

  The present inventor provides an easy-opening region in a band shape on the upper part of a bag having a specific shape with a gusset at the bottom, and when the easy-opening region and the top seal of the bag are in a specific positional relationship, The bag can be opened easily by picking the upper end of the bag and pulling it, and the opened bag is strongly pressed against the container body by the contents. Found to be maintained.

That is, the present invention is a film bag filled with a powdery substance, which is accommodated in a box-shaped container body having an opening on the upper surface and having a lid covering the opening,
The bag has a gusset at the bottom, the top is a flat bag type, the outer width of the bag is narrower at the bottom end than the upper end, and the easy-opening region extends in the width direction of the bag at the top of the bag Have
Provided is a bag in which an upper end edge or a lower end edge of the easy-opening region overlaps with a lower end edge of a top seal of the bag or an easy-opening region and a lower end edge of the top seal overlap.

  Moreover, this invention provides the usage method of the bag which puts the above-mentioned bag in a box-shaped container main body, and unseal | opens from a seal | sticker of a bag again in the state which put the bag in the container main body.

  Furthermore, this invention provides the box-shaped container provided with the lid | cover which covers the opening part of the container mentioned above, the box-shaped container main body which accommodated this bag, and a container main body.

  According to the bag of the present invention, the bag has a gusset at the bottom, the top is a flat bag type, and the outer width of the bag is narrower at the bottom end than the upper end. When the bag is put into the container main body, the bag is easy to put into the container main body because it has a reverse taper shape with a narrow bottom side, and after the bag is put into the container main body, it is easy to sit. That is, there is almost no gap between the outer surface of the bag and the container body, and the bag is fitted into the container body.

  In addition, if the bag is put into the container body and the bag is torn from the side seal near the top seal from the opening start portion, the easy-opening region is torn in the width direction of the bag or subsequently to the lower edge of the top seal. The bag is torn along and the bag opens across its entire width. In this case, since the bag can be opened with the bag placed in the container body, the bag can be easily opened without supporting the weight of the contents in the bag by hand. The opening surface of the bag is maintained in a large and wide open state when the bag is strongly pressed against the container body by the contents. Therefore, it becomes easy to take out the contents with a measuring spoon or the like. This also eliminates the need to provide the container body with notches, holes, pressing members and the like for hooking the bag to the inner wall of the container body so that the bag opens largely within the container body.

FIG. 1 is a perspective view of an example bag 10A filled with a powdery substance. FIG. 2 is a (1) front view, (2) AA view, and (3) BB view of a bag 10A not filled with a powdery substance. FIG. 3 is an explanatory diagram of the arrangement state of the cuts in the easy-open processing region. FIG. 4A is a perspective view of a box-shaped container in which a bag 10A is accommodated. FIG. 4B is a perspective view of a state in which the lid of the box-shaped container in which the bag 10A is accommodated is opened. FIG. 4C is a perspective view at the start of opening of the bag 10A accommodated in the container body. FIG. 4D is a (1) perspective view and (2) front view after opening the bag 10A accommodated in the container body. FIG. 5 is an explanatory diagram of a tear line of the bag 10A. FIG. 6A is an explanatory diagram of a method for manufacturing the bag 10A. FIG. 6B is an explanatory diagram of a method for manufacturing the bag 10A. FIG. 6C is an explanatory diagram of the manufacturing method of the bag 10A. FIG. 6D is an explanatory diagram of the manufacturing method of the bag 10A. FIG. 6E is an explanatory diagram of the manufacturing method of the bag 10A. FIG. 6F is an explanatory diagram of the manufacturing method of the bag 10A. FIG. 7A is a partial front view of a bag 10B of an embodiment that is not filled with a powdery substance. FIG. 7B is a partial front view of the bag 10C of the embodiment that is not filled with a powdery substance. FIG. 7C is a partial front view of the bag 10D of the embodiment that is not filled with a powdery substance. FIG. 8A is a front view of a modified embodiment of the bag 10A of the embodiment. FIG. 8B is a front view of a modified embodiment of the bag 10B of the embodiment. FIG. 8C is a front view of a modified embodiment of the bag 10B of the embodiment.

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 film bag 10A filled with a powdery substance according to an embodiment of the present invention. FIG. 2 shows a front view (1), an AA view (2), and a BB view (3) of the bag 10A in a state in which the powdery substance is not filled for convenience of explanation. 4A is a perspective view of the box-shaped container 1 containing the bag 10A, FIG. 4B is a perspective view of the box-shaped container 1 with the lid 40 opened, and FIG. 4C is a box-shaped container. FIG. 4D is a perspective view (1) and a front view (2) after opening the bag 10A.

  As shown in FIG. 2, in this bag 10A, a pair of front and back film sheets forming the bag body are sealed with side seals 12, and a film forming the bottom gusset 11 and a film sheet forming the bag body are formed. It is sealed with a hem seal 14 and its upper end is sealed with a top seal 13 having a wide seal width. In this case, the seal width L1 of the top seal 13 is preferably set to 10 mm or more from the viewpoint of improving the ease of picking when the bag 10A is opened from the region near the top seal of the side seal 12 by picking it.

  The side seals 12 on both sides of the bag 10A are inclined seal portions 12a that are inclined with respect to the bottom edge of the bag 10A in the gusset 11 region. The angle θ between the edge of the oblique seal portion 12a and the extended line of the bottom end edge is preferably 40 to 50 °, more preferably 45 °. Thus, since the outer shape of the bottom of the bag 10A is rectangular, when the bag 10A is accommodated in the container main body 30 of the box-shaped container 1, the outer shape of the bag 10A can be well adapted to the inner shape of the container main body 30. .

  The upper part of the bag 10 </ b> A has a flat bag shape due to the top seal 13 and the side seal 12. Therefore, when the outer width W1 of the bag at the bottom is narrower than the outer width W2 of the bag at the upper end of the bag 10A and the bag 10A is filled with the powdery substance, as shown in FIG. The reverse taper type has a lower end narrower than the upper end. Here, if the area of the bottom formed by the gusset 11 is equal to or less than the area of the bottom surface of the container body 30, the bag 10A can be easily inserted into the container body 30 when the bag 10A in the container body 30 is refilled. Can do. Further, since the hem seal 14 is formed at the bottom of the bag 10A, the gusset 11 at the bottom of the bag 10A spreads in the thickness direction of the bag 10A when the bag 10A is filled with the powdery substance as the contents. Therefore, the independence as a single refill bag is stabilized. Therefore, the bag 10 </ b> A can be used as a container for a powdery substance without being accommodated in the container body 30.

  The side seals 12 extend in the vertical direction on both sides of the bag 10A, and each side seal 12 is provided with a notch 16 cut into a V shape. In the present invention, the opening opening portion is provided as necessary in order to improve the tearability in the width direction of the bag. As the opening start portion, an I-shaped notch, a U-shaped notch, a magic cut, or the like may be formed. The distance D1 between the opening start point at the opening start portion (in the case of the V-shaped notch 16 shown in FIG. 1, the V-shaped notch) and the top seal 13 is preferably 5 mm or less.

  Further, regarding the formation position of the notch 16 in the side seal 12, it is preferable that the vertical length H1 from the bottom edge of the bag 10A to the notch 16 is substantially the same as the depth H2 of the container body 30. Here, the bottom edge of the bag 10A refers to a portion that hits the bottom of the box-shaped container at the bottom end inside the bag, and the vertical length H1 from the bottom edge to the notch 16 is the depth of the container body 30. The dimensions H1 and H2 are such that the opening surface of the bag 10A and the opening surface of the container body 30 when the bag 10A is opened from the notch 16 are flush with each other. It means being close. For example, if the difference ΔH (FIG. 4D) between the depth H2 of the container body 30 and the length H1 from the bottom edge of the bag 10A to the notch 16 is preferably within 5 mm, more preferably 0 mm, The opening surface and the opening surface of the container body 30 are flush with each other.

  The length H1 from the bottom edge of the bag 10A to the notch 16 is preferably not more than the depth H2 of the container body 30. The length H1 from the bottom edge of the bag 10A to the notch 16 is excessively larger than the depth H2 of the container body 30, and after opening the bag body 10A from the notch 16, the opening surface of the bag body 10A is the container body 30. When protruding from the opening surface, when the lid 40 is closed to the container body 30, the opening end of the bag 10A is sandwiched between the opening end of the container body 30 and the lid 40, and the opening end of the container body 30 is There may be a gap between the container 40 and the lid 40, but the container body 30 is sealed with the lid 40 by positioning the opening surface of the bag 10 </ b> A near the opening surface of the container body 30 and below the opening surface of the container body 30. Can be closed. Therefore, even if the box-shaped container 1 with the lid 40 closed is stored in a highly humid place such as a washroom, it is possible to prevent the powdered substance of the contents from getting wet.

  Further, by positioning the opening surface of the bag 10A in the vicinity of the opening surface of the container body 30 in the vicinity of the opening surface of the container body 30, when the contents are taken out with a measuring spoon or the like, the space between the bag 10A and the container body 30 is reduced. It is possible to prevent the contents from entering the container.

  Further, by positioning the opening surface of the bag 10A in the vicinity of the opening surface of the container main body 30 in the vicinity of the opening surface of the container main body 30, the opening surface of the bag 10A after opening can be changed between the opening surface of the container main body 30 and the bag 10A. Since the bag 10A is strongly pressed against the container body by the contents, the opening surface of the bag 10A is maintained in a large and wide open state, and the contents are weighed. It becomes easy to take out with a spoon. On the other hand, if the opening surface of the bag 10A protrudes from the opening surface of the container main body 30, the upper end of the bag 10A must be folded when the lid 40 of the container main body 30 is closed. The surface cannot be maintained in a wide open state.

On the other hand, if the opening surface of the bag 10A is too low with respect to the opening surface of the container main body 30, it is difficult to open the bag 10A from the notch 16 in the container main body 30 when the bag 10A is opened.

  In the present invention, it is important to position the opening surface of the bag 10A in the vicinity of the opening surface of the container body 30 below the opening surface of the container body 30 with the bag 10A placed in the container body 30 as described above. It is. Therefore, in the bag 10A of the present embodiment, a band-shaped easy-opening processing region 21 extending in the width direction of the bag 10A is formed on each of the pair of front and back films forming the bag body at the upper end side of the bag with respect to the notch 16. Provided. For example, as shown in FIG. 3, the easy-opening region 21 can be a region in which a plurality of rows of cuts 22 formed intermittently in the width direction x of the bag are arranged in the vertical direction of the bag. In this case, the cut 22 may be a through-scratch of the film forming the bag 10A or a non-through-scratch. Further, instead of the notch 22, a straight emboss may be provided.

  In order to easily tear the easy-opening region 21 in the width direction x of the bag, the length L21 of the cut 22 provided intermittently in the width direction x of the bag is preferably 0.5 to 1.0 mm. More preferably, the distance L22 between adjacent cuts 22 is preferably 0.5 to 1.0 mm, more preferably 0.7 to 0.8 mm, and the distance L23 between intermittent rows of the cuts 22 is preferably 0.5 to 1.0 mm, more preferably 0.7 to 0.8 mm. Moreover, as for the width L20 of the up-down direction of the bag 10A of the easy opening process area | region 21, 5-20 mm is preferable.

  As the film itself that forms the easy-opening region 21, a general film having no particular tear straightness can be used. For example, polyester such as polyethylene terephthalate; polyamide such as nylon; low density polyethylene ( Examples include olefinic films such as LDPE), linear low density polyethylene (L-LDPE), stretched polypropylene (OPP), and unstretched polypropylene (CPP), and can be used as a single layer or laminated film.

  Further, the thickness of the 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 bag 10A is self-supporting even in the absence of the contents. Thereby, after opening the bag 10A, the powdery material decreases with the use of the powdery material in the bag 10A, and even if the position where the powdery material presses the bag 10A against the inner wall of the container body 30 is lowered, An open state can be maintained and the ease of taking out a powdery substance can be maintained. Note that the self-supporting property of the bag 10A can also be improved by forming the hem seal 14 at the bottom of the bag 10A as described above.

  In the bag 10A of the present embodiment, the easy-open region 21 and the top seal 13 are adjacent to each other so that the upper edge 21a of the easy-open region 21 overlaps the lower edge 13b of the top seal 13 (FIG. 2). . Compared to the case where the easy-opening region 21 and the top seal 13 are not adjacent to each other and the region that is not easily opened is interposed between them, the width of the bag 10A The direction of straight tearing can be greatly improved, and when the bag 10A starts to tear from the notch 16, the bag 10A is easily opened over its entire width. Thus, the opening surface of the bag 10 </ b> A can be easily positioned below the opening surface of the container body 30 in the vicinity of the opening surface of the container body 30.

  The circumferential length of the opening when the bag 10 </ b> A is opened in the width direction is preferably substantially the same as the inner circumferential length of the container body 30. As a result, as shown in FIG. 4D, after opening the bag 10 </ b> A, the powdery substance P in the bag 10 </ b> A tries to spread, so that substantially the entire peripheral surface of the bag 10 </ b> A is pressed against the inner wall of the container body 30. For this reason, the opening shape of the 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 bag 10A has a larger slack than the bag 10A because the circumferential length of the upper end opening of the bag 10A is excessively shorter than the inner circumferential length of the container body 30. Of the opening of the opening of the bag 10A and the inner dimensions of the container body 30 to such an extent that the upper end opening of the bag 10A does not fall inward within the container body 30 and the upper end of the bag 10A cannot sag. This means that the circumference is the same.

  6A to 6F are explanatory diagrams of an example of a method for manufacturing the bag 10A. First, as shown in FIG. 6A, the film 110 for forming the gusset 11 is folded in half, and a belt-like film 100 for forming the front and back of the bag body is laminated on the top and bottom thereof. Next, as shown in FIG. 6B, a seal 120 that becomes the side seal 12 and a continuous seal 140 that becomes the hem seal 14 are formed, and an easy-open region 21 is formed as shown in FIG. 6C. Thereafter, as shown in FIG. 6D, the side seals 12 of the adjacent bags are separated, the bottom V-cut, and the notch 16 are formed. In this way, the bag 10X shown in FIG. 6E is obtained, and the powdery substance as the contents is filled from the upper end opening of the bag 10A, and then the bag is closed with the top seal 13 to obtain the bag 10A as shown in FIG. 6F. it can.

  In this manufacturing method, the easy-open region 21 may be formed before the front and back belt-like films 100 are laminated.

  On the other hand, the container body 30 that accommodates the bag 10A may be a rectangular parallelepiped container formed using a paperboard-like material such as a paperboard, a plastic sheet, or a plastic box.

  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.

  The bag 10A can be preferably used as a refill bag for the box-shaped container 1 shown in FIG. 4A. 4B, the lid 40 is opened. As shown in FIG. 4C, while the bag 10A is placed on the container body 30, the bag 10A is pinched by hand, and the bag 10A is removed from the notch 16. Tearing in the width direction. FIG. 5 shows a tear line in this case by a broken line. As shown in the figure, the bag 10A is torn from the tip of the notch 16 at the start of tearing, but the tear will soon reach the easy-opening processing region 21, where it will be torn linearly or along the lower edge of the top seal 13 The bag 10A is torn linearly over the entire width as it is, and the upper end of the bag 10A is removed. Then, as shown in FIG. 4D, the 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 bag 10A as shown by an arrow, and opens widely.

  When the powdery substance P disappears due to the use of the powdery substance P in the bag 10A, a new refilling bag 10A filled with the powdery substance P is prepared and replaced with the previous bag 10A. At the time of this replacement, the bag 10A filled with the powdery substance P has a reverse taper type, so that the bag 10A can be easily inserted into the container body 30.

  As mentioned above, although one Example of this invention was described by the bag 10A shown in FIG. 1, this invention can take a various aspect. For example, the bag 10B shown in FIG. 7A is configured such that the easy-open processing region 21 and the lower end edge 13b of the top seal 13 overlap. In this case, the lower end edge 13b of the top seal 13 is located between the upper end edge 21a and the lower end edge 21b of the easy-open processing region 21. The bag 10 </ b> C shown in FIG. 7B is obtained by matching the formation region of the top seal 13 with the easy-opening processing region 21. In the bag 10D shown in FIG. 7C, the lower end edge 21b of the easy opening region 21 overlaps the lower end edge 13b of the top seal, but the upper end edge 21a of the easy opening region 21 is the same as the upper end edge 13a of the top seal 13 and the lower end. It is located in the area between the edges 13b.

  Thus, in the bag of the present invention, the upper edge 21a or the lower edge 21b of the easy-opening region 21 overlaps the lower edge 13b of the top seal 13, or the easy-opening region 21 and the lower edge 13b of the top seal 13 However, the positional relationship between the easy-opening region 21 and the top seal 13 is as follows. From the top of the bag, the top seal 13 and the easy-opening region 21 are in order from the top of the bag as shown in FIG. Preferably it is formed.

  8A, the upper edge 21a of the easy opening region 21 is adjacent to the lower edge 13b of the top seal 13 and the notch 16 is formed in the easy opening region 21, as shown in FIG. 1A. It is a thing. 8B, as shown in FIG. 7A, the lower end edge 13b of the top seal 13 is positioned between the upper end edge 21a and the lower end edge 21b of the easy opening region 21, and the notch 16 is located in the easy opening region 21. Is formed. 8C, as shown in FIG. 7A, the lower end edge 13b of the top seal 13 is positioned between the upper end edge 21a and the lower end edge 21b of the easy opening process region 21, and the opening start point of the notch 16 is the top seal. 13 is aligned with the extended line of the lower end edge 13b. Among these, as shown in FIGS. 2, 8A, and 8B, the easy-opening region 21 and the notch 16 are formed in order from the top of the bag as shown in FIGS. It is preferable.

Moreover, in the bag of this invention, the gusset 11 may also be formed with the film which forms a bag trunk | drum, and the hem seal | sticker 14 may be abbreviate | omitted.
In this invention, the various deformation | transformation aspects of the bag mentioned above can be combined suitably.

  Examples of the powdery substance to be filled in the bag include granular detergents such as powder detergents, sugars and salts, and powdery substances. If the bulk density of the powdery substance is 700 g / L or more, it can be opened cleanly by the action of opening the bag outward. According to the present invention, even when the powdery substance in the bag is 800 g or more, the film forming the bag has sufficient strength to accommodate such a filling amount, and the bag is easily opened. It becomes possible.

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

1 box container 10A, 10B, 10C, 10D, 10X bag 11 gusset 12 side seal (up-down direction seal)
12a Diagonal seal 13 Top seal
13a Top seal top edge
13b Top seal bottom edge 14 Hem seal 16 Notch 21 Easy opening region
21a Top edge of easy-open area
21b Lower end edge 22 of easy-opening processing region Notch 30 Container body 40 Lid
100 Band-shaped film forming the bag body
110 Film forming gusset
120 Side seal
140 Continuous seal that becomes a hem seal D1 Distance between opening start point and top seal at opening start portion H1 Vertical length from bottom edge of bag to notch H2 Depth of container body L1 Seal width of top seal L20 Easy opening Width of region bag in the vertical direction L21 Length of cut L22 Spacing interval L23 Spacing between rows where cuts are intermittently formed P Powdery material θ Extension line of edge and bottom edge of diagonal seal X the width of the bag x width direction of the bag W1 width of the outer bag of the bag at the bottom of the bag W2 width of the outer bag of the bag at the top of the bag

Claims (6)

A bag made of a film filled with a powdery substance, housed in a box-shaped container body having an opening on the upper surface and having a lid covering the opening,
The bag has a gusset at the bottom, the top is a flat bag type, the outer width of the bag is narrower at the bottom end than the upper end, and the easy-opening region extends in the width direction of the bag at the top of the bag Have
A bag in which the upper edge or the lower edge of the easy-opening region overlaps the lower edge of the top seal of the bag, or the easy-opening region and the lower edge of the top seal overlap.   The bag according to claim 1, wherein the easy-opening region is a region in which a plurality of rows of embossed or cuts formed intermittently in the width direction of the bag are arranged.   The bag according to claim 1, further comprising an opening start portion in a side seal of the bag and in a region on a bottom side of the bag from a lower end edge of the top seal. The bag according to claim 3, wherein the distance between the opening start portion and the top seal is 5 mm or less.
The bag according to 1.   A method for using a bag, wherein the bag according to any one of claims 1 to 4 is placed in a box-shaped container body, and the bag is opened from a side seal of the bag in a state where the bag is placed in the container body.   The box-shaped container provided with the lid | cover which covers the opening of the bag in any one of Claims 1-4, the box-shaped container main body which accommodated this bag, and a container main body.

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