JPH07257645A - Bag-in-box for viscous liquid - Google Patents

Abstract

PURPOSE:To obtain a bag-in-box for a viscous liquid like food seasonings, adhesives, printing ink, in which sucked viscous liquid is easily discharged and hence residual liquid is little and which is excellent in the productivity thereof. CONSTITUTION:In a bag-in-box in which a bag body made of a flexible resin film or the like is contained in a rigid cardboard box or a paper board box and a faucet piercing the lower end of the front side plate 23 of the box is attached to the bag body, the bag body 10 and the box body 20 are stuck at the whole area or a partial aria of the zone containing a triangle including the right end and the bottom of the left side plate 22, at least the upper end part of the front side plate 23, and a triangle including the left end part and the bottom of the right side plate 24. The bag body 10 and the box body 20 are stuck so as to be separable at least at the left upper corner of the left side plate 22 and at least at the right upper corner of the right side plate 24.

Description

Detailed Description of the Invention

[0001]

The present invention relates to a viscous liquid (50) for viscous liquids such as food seasonings, adhesives and printing inks, which can be easily sucked and discharged with a small amount of residual liquid discharged. The present invention relates to a bag-in-box in which the box body (20) has excellent suitability for box making.

[0002]

2. Description of the Related Art Conventionally, a bag made of a flexible resin film containing a viscous liquid for a viscous liquid such as a food seasoning, an adhesive or a printing ink has a rigidity. A composite paper for liquids, commonly referred to as a bag-in-box, which is housed in a box (in-box) made of cardboard or paperboard and has a spigot that penetrates the lower end of the front side plate of the box attached to the bag. As shown in FIG. 4, when the viscous liquid (50) is sucked and discharged, the flexible bag body (10) is deformed and reduced, and the container is used. Since the viscous liquid (50) can be discharged from the air (30) without entering the air, it is conveniently used especially for viscous liquids that do not like contact with air.

Here, Japanese Patent Application No. 5-7855 filed by the present applicant
In the (bag-in-box for viscous liquid), in the liquid composite paper container commonly referred to as the above-mentioned bag-in-box, as shown in FIG. 2, the left side plate (22) on the inner surface side of the box (20) is used. ) In a triangular region including the right end and the lower end, a region of at least the upper end of the front side plate (23), and a triangular region including the left end and the lower end of the right side plate (24), the bag (10 ) And the box
By attaching (20) and all or part,
As shown in FIG. 4, the bag body (10) cannot close the plug body (30), and the bag body (10) has a bag body (10) near the plug body (30). ) That cannot adhere to the lower part of the inner surface of the left side plate (22), and finally the diagonal upper end of the triangular area of the left side plate (22), the upper end of the front side plate (23) and the right side plate (24). The viscous liquid (50) can be continuously sucked and discharged while the bag body (10) is folded in two at the diagonal upper end of the triangular region of It is possible to provide a bag-in-box for viscous liquids, in which (50) can be easily sucked and discharged, and the residual discharge liquid amount is small.

Regarding the box-making and filling steps of the bag-in-box for viscous liquid of Japanese Patent Application No. 5-7855 filed by the present applicant, as shown in FIGS. 2 and 3, the box body (20 ) Is coated with an adhesive at a predetermined position (40) of the blank, and the flat tubular bag body (10) having the plug body (30) attached thereto is arranged at a predetermined position (broken line (1
(See (0)), the box body (20) is made into a flat tubular box (commonly referred to as sack pasting), and the flat tubular box body to which this bag body (10) is attached ( 20) is raised in a rectangular tube shape together with the bag body (10) (see FIG. 3 (A)), the upper and lower openings of the rectangular tube bag body (10) are sealed by heat fusion or the like. Then, the upper plate group (27, 27, 27, 27) and the lower plate group (28, 28, 28, 28) of the rectangular tubular box body (20) are folded (see FIG. 3 (B)). After sticking, etc., the upper and lower openings of the box body (20) are closed to form a rectangular parallelepiped box, and then the air inside the bag body (10) is sucked from the plug body (30), and the left side plate (22 ) The bag body (10) is folded in two with the diagonal upper end of the triangular area, the upper edge of the front side plate (23) and the diagonal upper edge of the triangular area of the right side plate (24) as boundaries. In the state (see Fig. 4), the plug body
The viscous liquid (50) is filled from the (30) and capped to complete the filling of the bag-in-box for the viscous liquid.

[0005]

However, in the box making and filling process of the bag-in-box for the viscous liquid of the above-mentioned Japanese Patent Application No. 5-7855, the flat body (10) stuck to In the process of raising the tubular box body (20) together with the bag body (10) into a rectangular tube shape, the bag body (10) is difficult to occur in a rectangular tube shape with upper and lower openings. In the process of sealing the upper and lower openings of the bag body (10) by heat-sealing, not only is the heat-sealing of the bag body (10) incomplete, but also speeding down and jamming (jamming) ) And other mechanical problems often stop the box making and filling process.

That is, the bag-in-box for viscous liquid of Japanese Patent Application No. 5-7855 includes the right end and the lower end of the left side plate (22) on the inner surface side of the box (20). Since the bag body (10) and the box body (20) are not attached to each other except the triangular area and the triangular area including the left end portion and the lower end portion of the right side plate (24), the bag body ( Since the adhesion between the box body (20) and the box body (20) is poor, it is difficult for the bag body (10) to occur in the shape of a rectangular tube having upper and lower openings.

[0007]

In order to solve the above problems, the present invention provides a bag (10) made of a flexible resin film, as shown in FIGS. It is stored in a box (20) made of rigid cardboard or paperboard,
Plug body (30) that penetrates the lower end of the front side plate (23) of the box body (20)
In the bag-in-box in which is attached to the bag body (10), a triangular area including the right end portion and the lower end portion of the left side plate (22) on the inner surface side of the box body (20) and at least the upper end of the front side plate (23). Part of the area and a triangular area including the left end and the lower end of the right side plate (24), the bag body (10) and the box body (20) are wholly or partially attached to each other, and the box On the inner surface side of the body (20), at least the upper left corner of the left side plate (22) and at least the upper right corner of the right side plate (24), the bag body (10) and the box body (20) are detachably attached. A bag-in-box for a viscous liquid having excellent suitability for box-making of the box body (20), by which the viscous liquid (50) can be easily sucked and discharged to reduce the amount of residual liquid discharged. It is a thing.

A bag body (10) made of a flexible resin film in the bag-in-box for viscous liquid of the present invention
For, with polyethylene (PE) or polypropylene (PP) or polyester (PET), using a heat-fusible resin film or its laminated resin film having an appropriate thickness for ordinary packaging materials, the internal content is 0.5 to 20 liters,
A bag body (10) such as a normal three-sided seal bag having a mouth opening (no reference number), a joint seal bag or a folded seal bag (commonly referred to as a gusset bag) is manufactured in the normal bag manufacturing process without restriction. It is a bag.

In the bag-in-box for viscous liquid of the present invention, a box body (2
As for (0), using a normal corrugated cardboard or a thick paperboard, the bag body (10) containing the viscous liquid (50) is sized so as to be able to be housed without a gap, and the stopper body (30 ) For (21)
Box body (20) of appropriate structure with the front side plate (23) at the lower end
Can be manufactured in a normal box-making process without any restrictions.

Regarding the viscous liquid bag-in-box of the present invention, the stopper (30) attached to the bag body (10) penetrating the lower end of the front side plate (23) of the box body (20) is as follows: Use normal polyethylene (PE), polypropylene (PP), etc.
Cylindrical plug having a disc-shaped flange (32) for heat-sealing (0) and a fitting structure (33) with a cap (not shown)
(30) can be molded by an ordinary injection molding method without restriction, and the disc-shaped flange portion (32) is provided with a mouth opening (no reference numeral) for a stopper provided in the bag body (10). The peripheral portion is heat-sealed to attach the plug body (30) which penetrates the lower end portion of the front side plate (23) of the box body (20) to the bag body (10). In this case, the bag (10)
In order to reinforce the plug body (30) attached to, it is preferable to attach the bag body (10) and the box body (20) around the plug body (30) to each other.

[0011]

EXAMPLE FIG. 1 is a sectional view of a bag-in-box for a viscous liquid in an example of the present invention. That is, 50
A bag (10) made of a laminated resin film of flexible polyester (12 μm) and polyethylene (60 μm) containing 0 g of a printing ink (50) was placed in a length, width, and height of 100 × 70.
A cylinder with an inner diameter of 10 mm, which is housed in a paperboard box (20) having a rigidity of 550 g / m ² of a rectangular body of × 85 mm and which penetrates the lower end of the front side plate (23) of the box (20). 1 is a cross-sectional view of a bag-in-box for viscous liquid of the present example, in which a polyethylene-like plug body (30) is attached to a bag body (10).

FIG. 2 is a plan view of a blank of the box body (20) in the bag-in-box for the viscous liquid of this embodiment. That is, a left side face plate (22) and a front side face plate (23) provided with through holes (21) for the plug body (30) at the lower end portion are respectively rectangular through fold lines (one-dot chain line without reference numeral). The right side plate (24), the rear side plate (25), and the adhesive margin piece (26) are sequentially arranged, and an appropriate top plate group (27, 27, 27, 27 )
And the bottom plate group (28, 28, 28, 28) are respectively installed in series, vertical,
In a blank of a box body (20) made of a rectangular parallelepiped having a width and height of 100 × 70 × 85 mm and having a rigidity of 550 g / m ² which is normally printed, the left side of the inner side of the box body (20) Face plate (22)
Front side plate with diagonal upper and lower edges of the triangular area of
A bag body (10) and a box body of the upper end and the left and right ends of (23) and the periphery of the through hole (21), and the oblique upper end and lower end of the triangular area of the right side plate (24). Part (40) to partially attach (20) and
, Respectively, by applying an adhesive (40), the inner side of the box (20), the upper left corner of the left side plate (22) and the upper right corner of the right side plate (24), the bag (10) And the box (20) are detachably attached
(41) shows a state in which the spot-like adhesive (41) having an application area ratio of 30% is applied.

FIG. 3 is a perspective view showing a part of the box making and filling steps in the bag-in-box for viscous liquid of this embodiment. That is, the box making and filling process of this example is the same as the box making and filling process of the above-mentioned Japanese Patent Application No. 5-7855, and the bag body (10) and the box body (20) are partially formed. Apply the adhesive (40) to the part (40) to be attached to the bag (10) and the box (20).
On the part (41) where the
1) is applied to the blank of the box body (20) shown in FIG. 2 and the plug body (30) is attached to the flat tubular bag body of 210 × 165 mm (1
0) is attached to a predetermined position shown by a broken line (10) in FIG.
(20) is made into a flat tubular box (sacked), and as shown in FIG. 3 (A), the flat tubular box body (2
(0) is raised in a rectangular tube shape together with the bag body (10), the upper and lower openings of the rectangular tube-shaped bag body (10) are heat-sealed and sealed,
As shown in (B), the upper plate group (27, 2
(7,27,27) and the bottom plate group (28,28,28,28) are folded and adhered, and the upper and lower openings of the box body (20) are closed to form a box into a rectangular parallelepiped. The air in the bag (10) is sucked from the (30), and the diagonal upper end of the triangular area of the left side plate (22) and the front side plate (2
With the upper end of 3) and the diagonal upper end of the triangular area of the right side plate (24) as a boundary, the part (41) where the bag body (10) and the box body (20) are detachably attached is In a state where the bag body (10) was peeled off and folded in half (see FIG. 4), 500 g of the printing ink (50) was filled from the plug body (30) and capped. The bag-in-box for the viscous liquid has been completely filled.

In addition to the box making and filling steps of this embodiment described above, a flat tubular box body (20) to which the bag body (10) is attached
In the state of being raised in a rectangular tube shape together with the bag body (10), the bag body (10) and the box body (20) are simultaneously provided with through holes (21) for the plug body (30), The lower opening of the square tubular bag body (10), such as attaching the plug body (30) to (10), is heat-sealed and sealed, and the printing ink (50) is discharged from the upper opening. After filling, different box making, such as heat-sealing and sealing the upper opening of the bag (10),
Even in the filling step, the bag-in-box for the viscous liquid of the present embodiment can be manufactured and filled.

FIG. 4 is a sectional view showing a state in which the contained viscous liquid (50) is sucked and discharged in the bag-in-box for the viscous liquid of this embodiment. That is, in a bag-in-box for viscous liquids filled with 500 g of printing ink (50) of this embodiment shown in FIGS. 1, 2 and 3, using a normal piston pump (not shown), When the printing ink (50) was sucked and discharged from the spout (30),
Same as the bag-in-box for viscous liquid of No. 5-7855, as shown in FIG. 2, the left side plate on the inner surface side of the box (20)
The diagonal upper and lower ends of the triangular area of (22), the upper and left and right ends of the front side plate (23), and the peripheral portion of the through hole (21), the triangular shape of the right side plate (24). A part where the bag body (10) and the box body (20) are partially adhered to each other at the diagonally upper end and the lower end of the area.
Apply adhesive (40) to each of the (40) and bag each
The bag body (10) cannot close the plug body (30) by sticking the (10) and the box body (20), and the bag body (10) is the plug body. It cannot be adhered to the lower part of the inner surface of the bag body (10) in the vicinity of (30), and finally the diagonal upper end of the triangular area of the left side plate (22) and the front side plate (23 ) And the diagonal upper end of the triangular area of the right side plate (24) as a boundary, the printing ink (50) is continuously sucked and discharged while the bag body (10) is folded in two. A bag-in-box for viscous liquid was obtained, which is easy to discharge by suction of the viscous liquid (50) and has a small amount of residual liquid discharged.

In addition, in the bag-in-box for viscous liquid of this embodiment, as shown in FIG. 2, the upper left corner of the left side face plate (22) and the right side face plate on the inner surface side of the box body (20). A spot-like adhesive (4) with an application area ratio of 30% is applied to a portion (41) at which the bag body (10) and the box body (20) are releasably attached to the upper right corner of (24).
1) was applied, and the bag body (10) and the box body (20) were releasably adhered to each other, so that the bag-in-box box for viscous liquid of the present example shown in FIG. In the filling step, the flat tubular box body (20) to which the bag body (10) is adhered is raised in a rectangular tube shape together with the bag body (10) in the bag body (10) and the box body (20). It improves the adhesion with the bag (10) and solves the problem that the bag (10) does not easily occur in the shape of a rectangular tube with upper and lower openings.
In the process of sealing the upper and lower openings of (0) by heat fusion etc., the bag body
The heat fusion of (10) is complete, and the plug (3
In the step of sucking the air in the bag body (10) from (0), the part (41) where the bag body (10) and the box body (20) are detachably attached is peeled off,
The bag (10) is folded in two and eliminates mechanical troubles such as speeding down and jamming. It is a bag for viscous liquid with excellent box suitability for the box (20). The inbox was obtained.

Regarding the method for releasably attaching the bag body (10) and the box body (20) in the bag-in-box for viscous liquid of the present invention, the application area ratio is small in this embodiment.
(30%) In addition to the method of applying the spot-like adhesive (41), other pattern shapes with a small application area ratio (for example, line shapes)
The adhesive (41) is applied, the spot-shaped adhesive (41) with a small application area is applied, or the other adhesive (41) having a weak adhesive force is applied. The (10) and the box (20) can be peelably attached.

[0018]

As described above, in the bag-in-box for viscous liquid of the present invention, as shown in the examples, when the viscous liquid (50) is sucked and discharged using a normal vacuum suction device, etc. As in the bag-in-box for viscous liquid of Japanese Patent Application No. 5-7855 mentioned above, a triangular area including the right end portion and the lower end portion of the left side plate (22) on the inner surface side of the box body (20). And a triangular region including at least the upper end portion of the front side plate (23) and the left end portion and the lower end portion of the right side plate (24), the bag body (10) and the box body (20) entirely or Due to the partial attachment (10)
That cannot close the mouth plug (30), and that the bag body (10) cannot adhere to the lower inner surface of the bag body (10) near the mouth plug body (30). And finally, the diagonal upper end of the triangular area of the left side plate (22) and the front side plate (23)
The viscous liquid (50) is continuously sucked and discharged while the bag body (10) is folded in two at the boundary between the upper end of the bag and the diagonal upper end of the triangular area of the right side plate (24). A viscous liquid (50) can be easily sucked and discharged, and the residual liquid amount is small.
A bag-in-box for a viscous liquid can be provided.

In addition, in the bag-in-box for viscous liquid of the present invention, as shown in the embodiment, at least the upper left corner and the right side surface plate of the left side surface plate (22) on the inner surface side of the box body (20).
At least in the upper right corner of (24), the bag body (10) and the box body (20) are releasably adhered to each other, so that a bag-in-box for viscous liquids can be formed in the box-filling step. The bag (10) solves the problem that the bag (10) is difficult to occur in the shape of a rectangular tube with the top and bottom opened by improving the adhesion between the body (10) and the box (20). The heat-sealing of the bag body is completed, and in the step of further sucking the air in the bag body (10) from the spout body (30),
The part (41) where the (10) and the box body (20) are removably attached is separated, and the bag body (10) is folded in two, such as speeding down or jamming. It is possible to provide a bag-in-box for viscous liquid, which has excellent suitability for box-making of the box body (20), in which mechanical trouble is eliminated.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a bag-in-box for viscous liquid in an example of the present invention.

FIG. 2 is a plan view of a blank of the box body (20) in the bag-in-box for viscous liquid of the example.

FIG. 3 is a perspective view showing a part of box making and filling steps in the bag-in-box for viscous liquid of the example.

FIG. 4 is a cross-sectional view showing a state in which the contained viscous liquid (50) is sucked and discharged in the bag-in-box for the viscous liquid of the example.

[Explanation of symbols]

10 ... Bag body 20 ... Box body 21 ... Through hole for plug body (30) 22 ... Left side plate 23 ... Front side plate 24 ... Right side plate 25 ... Rear side plate 26 ... Adhesive piece 27 ... Top plate group 28 ... Bottom Face plate group 30 ... Plug body 32 ... Flange portion 33 ... Fitting structure portion 40 ... Part that partially adheres the bag body (10) and the box body (20), adhesive 41 ... Bag body (10) Part where the box (20) is releasably attached, spot-like adhesive 50 ... Viscous liquid, printing ink

Claims (1)

[Claims] 1. An opening for accommodating a bag made of a flexible resin film or the like in a rigid box made of corrugated cardboard or paperboard and penetrating a lower end portion of a front side plate (23) of the box. In the bag-in-box with the stopper attached to the bag,
On the inner surface side of (0), a triangular area including the right end portion and the lower end portion of the left side plate (22), at least the upper end region of the front side surface plate (23), and the left end portion and the lower end portion of the right side plate (24). In the area of the triangle including, the bag body (10) and the box body (20) are wholly or partially adhered to each other, at the inner surface side of the box body (20), at least the upper left of the left side plate (22). At the corner and at least the upper right corner of the right side plate (24),
A bag-in-box for a viscous liquid, characterized in that the bag body (10) and the box body (20) are detachably attached.