JP2011207484A - Packaging bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging bag having a shape giving a unique impression that the bag in a vertically standing position with its content filled therein looks as if it were inclining toward a discharging opening, extremely smooth in refilling the content into another container, minimized in loss of original film, and is advantageous in manufacture.SOLUTION: The bag (1) able to vertically stand and having a discharging opening for the content has a basic shape, includes, when viewed from a side of the bag in a flat position: a rectangular bottom area (11); a body area (12) of a parallelogrammatic shape, which continues upwards from the upper side of the area (11); a top area (13) continues further upwards from the upper side of the parallelogrammatic shape of the area (12), near an obtuse angle; and a discharging area (14) continuing upwards from the upper side of the body area (12), near an acute angle. The bottom area (11) is formed into a bottom gusset (g).

Description

The present invention is not only refilling into other containers is very smooth, it is easy to manufacture packaging bags, the lossy portion of the film material is minimal, and the overall shape is unique. It relates to a certain packaging bag.

(Packaging bag for refill)
As packaging bags, those that are used for refilling the contents into other containers (particularly containers such as bottles with discharge tools) have become widespread. Packaging bags for this purpose have the advantage that they contribute greatly to volume reduction (reduction in volume) of waste, and consumers can purchase refills at a lower price. This refillable packaging bag attracts consumers' attention when it is displayed at the store, and it can be placed on the floor or sink in the middle of refilling work. A pouch) is usually used.

(Representative packaging bag / Fig. 11)
As a packaging bag for this purpose, a vertically long rectangle is used as a basic shape in a side view, and one of the two corners on the upper side of the rectangular bag is used to provide a corner region. In most cases, a spout (pour-out port) is formed in (see FIG. 11).

However, in the bag of FIG. 11, the notch in the portion immediately below the spout is a step, and therefore it is not always easy to refill the contents without filling when the contents are refilled into another container.

(Improved packaging bag / Fig. 12)
From the viewpoint of smooth refilling, it is advantageous to adopt an approach that does not impede the flow of the liquid by making the portion immediately below the spout in the corner region in FIG. 11 into an inclined shape (FIG. 1).
2).

However, even if the device shown in FIG. 12 is used, in terms of the smoothness of the refilling operation, FIG.
The improvement effect compared with the case of 1 was limited.

(Packaging bag with accessories)
Pour with the help of these accessories (straw and ribs) by filling a straw at the outlet of the refill bag or by providing a rib at the outlet of the refill bag. Although improving the take-out property (refillability) is also widely performed, these devices inevitably make the manufacturing process of the packaging bag complicated and disadvantageous in terms of manufacturing cost.

(Package with parallelogram shape)
Although not related to a refill bag, as in Patent Documents 1 and 2 below, proposals have been made to make the package a parallelogram shape. The idea is to use the sharp corners of the parallelogram as spouts.

-Patent Document 1
In claim 3 and FIGS. 3 to 8 of Japanese Patent Application Laid-Open No. 2008-179394 (Patent Document 1), the upper end side 6a of the upper side seal portion 6 of the liquid packaging bag 5 and the lower end side 9a of the lower side seal portion 9 are described. However, a liquid packaging bag is shown that is parallel to provide a parallelogram-shaped package (see FIG. 3, the single vertical line on the right is the folding line of the film).

-Patent Document 2-
In JP 2007-91270 A (Patent Document 2), by providing an adhesive portion formed by adhering a pair of front and back sheets forming the accommodating portion to each other, the flow of the contents flowing toward the spout is limited. A pouch container formed with a flow restricting portion is shown. And in Claims 19-21 and FIGS. 10-13 of this literature, the pouch container whose planar shape is a substantially parallelogram is shown.

JP 2008-179394 A JP 2007-91270 A

(Regarding Patent Document 1)
The package of Patent Document 1 does not appear to have any loss because there is no cut-off or punching of the film material provided for bag making, but the seal part between the adjacent bag and the bag is extremely wide. In the end, film materials are not used effectively. Moreover, this package is irrelevant to the self-supporting property (standing property).

(Regarding Patent Document 2)
The pouch container of Patent Document 2 is assumed to be a sachet from the description of paragraph 0002 and the aspect of the continuous product of FIG. 11, but in any case, it is irrelevant to the independence (standing structure). Yes,
It is also unrelated to the refillable pouch.

(Invention of reference example / Figs. 5 and 7)
A packaging bag (pouch) for refilling is often manufactured by a two-catch method (two-row type) as shown in FIG. 5 according to Reference Example 1 described later examined by the present applicant. At this time, due to the formation of the bottom gusset, both sides of the film material to be run become the bottom part of the pouch, and the center line side of the film material to be run becomes the top part of the pouch.

As described above, from the viewpoint of smooth refilling, it is advantageous to adopt an approach that does not impede the flow of the liquid by making the portion immediately below the spout into an inclined shape. In this case, it is particularly advantageous in terms of smoothness of refilling that the approach portion starts from the lower portion of the main body portion as much as possible and that a long inclination can be taken up to the tip end portion of the spout. In FIG. 11 and FIG. 12 described above, the spout is formed in the corner region using one of the two corners on the upper side of the rectangular bag. The inventor tried to tilt the approach part that reaches the spout so that it starts from the lower part of the main body part as much as possible and projects outward from the main body part. The attempt is to devise a device as shown in FIG.

However, when the approach from the lower part of the main body part to the tip part of the spout port is projected outward from the main body part as shown in FIG. 7, the pouring property from the spout port (refillability to other containers)
Is obviously smoother, but the loss portion of the film material becomes much larger than in the case of FIG. In addition, even if the width of the bottom portion of the bag in FIG. 7 is the same as the width of the bottom portion of the bag in FIG. The bottom seal bar (21 ') of FIG. 6 for forming the bottom gusset used can no longer be used, and a special bottom seal bar (21 ") for use in FIG. 7 must be newly prepared separately. It will be.

(Object of invention)
Under such a background, the present invention has a form that gives a unique impression as if it is tilted forward toward the spout in the vertical state when the contents are filled, and is refilled into another container. It is an object of the present invention to provide a packaging bag that is extremely smooth, has a minimal loss portion of the film material used for bag making, and is advantageous in production.

The packaging bag of the present invention is
A bag (1) that can be suspended and has a spout for the contents,
The bag (1) is in a flat side view,
A rectangular bottom region (11),
A parallelogram-shaped body region (12) connected from the upper side to the upper side of the bottom side region (11);
A top side region (13) connected to the upper side from the upper side portion near the obtuse angle of the parallelogram type of the trunk region (12);
-Having a basic shape consisting of a spout region (14) connected to the upper side from the upper side near the acute angle of the parallelogram-shaped body region (12); and
The bottom side region (11) is formed in the bottom gusset (g);
It is characterized by.

As described above, since many existing products use a corner of one of the two corners on the upper side of the rectangular bag, a spout is provided there, so that refilling is smooth. There is a limit. In order to improve this point, the improvement effect is limited even if the portion immediately below the spout in the corner region has an inclined shape so that the flow of the liquid is not obstructed.

In addition, as described above, it is widely practiced to enclose a straw at the site of the spout of the refill bag or to provide a rib at the site leading to the spout of the bag for refill. Ingenuity inevitably complicates the manufacturing process of the packaging bag and is disadvantageous in terms of manufacturing cost. The ideal is to devise packaging bags that can be poured smoothly without these accessories.

In contrast, the packaging bag of the present invention filled with the contents gives an impression of a forward leaning posture as a whole due to its unique shape, and the approach leading to the spout is the approach of the bag. Since it is inclined outward, it can be poured smoothly as if using a “pitch”.
Refilling into other containers is very smooth and very convenient for consumers.

As can be easily understood from the comparison between the packaging bag of FIG. 2 according to Example 1 of the present invention and the packaging bag of FIG. 5 according to Reference Example 1, the packaging bag of FIG. The bag has a clean spout as a spout. Moreover, regardless of the peculiarity that the packaging bag of FIG. 2 according to the present invention has an inclined shape, the amount of contents that can be filled is reduced in comparison with the packaging bag of FIG. Absent. The bottom seal bar (21) of FIG. 3 used for the bottom seal of the packaging bag of FIG. 2 according to the present invention is also shown in FIG.
The same as the bottom seal bar (21 ') of FIG. 6 used for the bottom seal of the packaging bag can be used.

Further, when compared with FIG. 7 according to the reference example 2, in the present invention, as shown in FIG. 2, since the ratio of the lost portion of the film material used for bag making is minimal, it contributes to resource saving.

In addition, the packaging bag of the present invention gives a unique impression as if it is tilted forward to the spout side in the standing state when the contents are filled, and is soft even when the outer periphery is constituted by a substantially straight line. Give a good impression. The appearance of the packaging bag of the present invention seems to be a high-value offering with both hands, and it seems that a slow movement can be felt from its appearance, just looking I feel calm. This is also preferable in terms of customer suction power at the store and user familiarity.

Further, it is surprising in that it is stable at the time of suspending despite giving a seemingly unstable impression inclined forward (to the spout side).

  The present invention will be described in detail below.

[Packaging bags]
(Sheet constituting bag (1))
The bag (1) of the present invention is produced using a sheet having a basic layer configuration of “base layer / sealant layer”. The outer layer side is the base film, and the inner layer side is the sealant layer.

Examples of substrate layers are biaxially stretched polypropylene film (OPP), biaxially stretched nylon film (ONY), biaxially stretched polyester film (PET), unstretched polypropylene film, unstretched nylon film, cellulosic film, synthetic paper (Polypropylene-based multilayer synthetic paper and the like), metal foil (aluminum foil (AL) and the like), and the like. The base material layer may be composed of two or more layers. The base material layer may have a gas barrier resin layer, an adhesive resin layer, an anchor coating layer, a vapor deposition layer (metal vapor deposition layer or ceramic vapor deposition layer), a printing layer, a top coat layer, and the like. The thickness of the base material layer is arbitrary as long as a predetermined strength can be obtained, but is often about 12 to 120 μm, for example.

As the sealant layer, low density polyethylene (LDPE), linear low density polyethylene (LLDPE), medium density polyethylene (MDPE), high density polyethylene (HDPE),
Polyethylene resins such as ethylene-vinyl acetate copolymer (EVA), ethylene-unsaturated carboxylic acid ester copolymer, ethylene-unsaturated carboxylic acid copolymer, ionomer, ethylene-propylene copolymer; And various resin layers having heat sealing properties. The sealant layer may also be composed of two or more layers. The thickness of the sealant layer is not limited, but is about 10 to 250 μm, especially 20 to 200 μm.
It is often about m.

The lamination between each layer is performed by a method such as a dry laminating method, a wet laminating method, a casting method, a sand laminating method, a coextrusion method, an extrusion coating method, and a printing method, except in the case of forming a vapor deposition layer.

Since the packaging bag of the present invention is a bag (1) that can be suspended and has an outlet for contents, the bottom side region (11) is formed in the bottom gusset (g) as described later.

This bag (1) is in a flat side view,
A rectangular bottom region (11),
A parallelogram-shaped body region (12) connected from the upper side to the upper side of the bottom side region (11);
A top side region (13) connected to the upper side from the upper side portion near the obtuse angle of the parallelogram type of the trunk region (12);
-It has a basic shape consisting of a spout region (14) continuous from the upper side near the acute angle of the parallelogram-shaped body region (12) to the upper side.

The rectangular bottom region (11) is often a horizontally long rectangle, but may be a square or a vertically long rectangle depending on circumstances. The bottom side region (11) is formed in the bottom gusset (g) so that the bag (1) hangs down.

The trunk region that extends from the upper side to the upper side of the bottom side region (11) is a parallelogram type. Here, the parallelogram type is a parallelogram or a quasi-parallelogram, and the left and right side lines (s _L ) and (s _R ) of the parallelogram type are straight lines, polygonal lines, or curved lines. (Preferably a line of substantially the same shape consisting of a straight line, a broken line or a curved line).

In this case, in the parallelogram when the straight line connecting the lower and upper ends of the left and right side lines (s _L ) and (s _R ) of the parallelogram type of the body region (12) is assumed to be the left and right side lines. Of the internal angles of the parallelogram, the acute angle θ is preferably in the range of 60 to 85 ° (particularly 65 to 80 °).
However, depending on the balance between the bottom side and the height of the bag (1), this θ may deviate from the above range.

From the upper side portion near the obtuse angle of the parallelogram type of the trunk region (12) above, the top side region
(13) is arranged continuously. The shape of the top side region (13) is usually a horizontally long rectangular shape, but it can be a square, a vertically long rectangular shape, or a trapezoidal shape, and the top side region (13) It is also possible to make a decorative shape such as a wavy line on the upper side. However, this top side region (13) is a filling port for the contents, and when manufacturing by the two-catch method, it is preferable to be simple in relation to the paired bag, and over-decoration
Since the appearance of (1) may be impaired, it is best to use a simple horizontally long rectangle.

From the upper side of the parallelogram-shaped body region (12) close to the acute angle, the spout region is located on the upper side.
(14) is arranged continuously. The shape of the spout region (14) is often triangular so that the role of the nozzle is fulfilled. The extension line of the upper side of the body region (12) on the front side of the bag (1) should be the side of the spout region (14) on the front side of the bag (1). Is the best.

The peripheral seal band of the spout area (14) of the bag (1) should be provided with notches such as I-notch, V-notch and U-notch to facilitate opening at the stage of use to consumers. Can do. In place of the notches, fine flaws and fine holes can be provided on the outer edge side of the heat seal band.

(Packaging body)
The bag (1) is filled with contents from the upper side (opening side) of the top side region (13), and then the opening side is heat-sealed to form a package.

The contents can be any liquid from a low-viscosity liquid to a high-viscosity paste as long as it can be discharged from the spout of the bag (1), and can be a granular material. Examples of contents range from liquid detergents, shampoos, rinses, bath additives, seasonings, foods and beverages, pet foods, oils, deodorants, adhesives and paints.

(Method for manufacturing packaging bags)
Taking a 2-catch method as an example for manufacturing packaging bags,
-The front and back sheets having a width corresponding to the height of two bags (1) of the desired height are intermittently run in a state where they are overlapped,
・ Insert a double-folded tape (punch holes in the width of the bag (1) in advance with gaps between the two sides of the front and back sheets). At the same time, heat sealing is performed using the bottom gusset seal bar to form the bottom gusset seal when it is made into a bag (1). ),
・ Also, use the seal bars to form both sides when the bag (1) is used, and heat seal in the width direction of the front and back sheets to form the bag (1). To form
Subsequently, these seals are cut, trimmed or punched, and cut along the center line in the running direction of the front and back sheets to form individual bags (1).
Is made by

  The following examples further illustrate the invention.

Example 1
FIG. 1 is a side view showing an example of a packaging bag of the present invention, and (A) is a side view as it is,
(B) shows a state where the area is divided for the sake of explanation.

The packaging bag of FIG. 1 is a bag (1) that can be suspended and has a spout for contents, and is shown in FIG.
)like,
A bottom rectangular region (11) in the form of a horizontally long rectangle;
A parallelogram-shaped body region (12);
A top rectangular region (13) with a horizontally-long rectangular shape;
-It consists of a spout area (14) with a triangular shape. The positional relationship between the regions is as shown in FIG. The bottom side area (11) is the bottom gusset (g
) Is configured. The upper side of the top side region (13) is opened, and after filling the contents from the opening, the upper side is heat sealed.

In the first embodiment, the extension line on the left side of the bottom side region (11) and the extension line on the left side of the top side region (13) are designed to be on the same line. The approach portion leading to the spout is projected outward from the line. Therefore, the packaging body in which the contents of the packaging bag of FIG. 1 are filled can be refilled into another container very smoothly.

More specifically, the dimensions of each part in FIG. 1B are as follows: a = 11 in the first embodiment.
0 mm, b = 50 mm, c = 110 mm, d = 20 mm, e = 75 mm. Of the internal angles of the body region (12), the acute angle θ is tan θ = 110/35 = 3.14, so θ≈72.5 °. Accordingly, the obtuse angle is (180−θ) ≈107.5 °.

As shown in FIG. 1 (A), this bag (1) has a substantially straight outer periphery,
It looks soft as if the outer circumference is formed by a curve. When the contents are filled, it looks more rounded. And looking at the standing figure, it is quite tasteful, and it seems to be an illusion that it may begin to walk forward.

FIG. 2 is a plan view showing a state when the bag (1) of FIG.
FIG. 3 is a plan view of the bottom seal bar (21).
FIG. 4 is an explanatory view showing a state when sealing in the film width direction, and also shows a broken line-shaped width direction seal bar (22) for sealing in the film width direction.

The two films travel in the left-right direction in FIG. 2 in a state of being overlapped, and the bottom seal is made from both sides by the bottom seal bar (21) in FIG. Since there is no extra space between adjacent bags (1) as shown in FIG. 2, as the bottom seal bar (21), a bottom seal bar (21 ') used when producing a normal rectangular bag (described later) (Refer to Reference Example 1 of FIG. 5), and the same thing can be used (assuming that the bottom of the bag (1) is the same size in both FIG. 2 and FIG. 5).

On the other hand, with respect to the film width direction, the “folded line + triangular loop” -shaped width direction seal bar (22) shown in FIG. . At this time, the portion surrounded by the dotted line of the spout region (14) in FIG. 4 is also sealed at the same time by the sealing by the triangular loop-shaped portion of the width direction seal bar (22). Since both sides of the bag (1) in FIG. 1 are in the form of a polygonal line, the width direction seal bar (22) forming both sides of such a bag (1) is also in the form of a polygonal line.

Reference example 1
FIG. 5 is a plan view showing a state when the bag (1 ′) is manufactured by the two-catch method.
FIG. 6 is a plan view of the bottom seal bar (21 ′) used in FIG.

This Reference Example 1 belongs to the category of the prior art for manufacturing a rectangular bag (1 ′), and FIG.
The bottom seal bar (21 ′) of FIG. 3 is used to seal the bottom, but the bottom seal bar (21) of FIG. 3 which is the same as the bottom seal bar (21 ′) is used in the first embodiment described above. It can be used.

Reference example 2
FIG. 7 is a plan view showing a state when a bag (1 ″) is manufactured by a two-catch method.
FIG. 8 shows the bottom seal bar (21 ") used in FIG.

This reference example 2 is devised so that the approach part leading to the tip of the spout of the packaging bag in reference example 1 (FIG. 5) starts from the lower part of the main body as much as possible.
Due to the distance between adjacent bags (1 "), the bottom seal bar (21 ') of Reference Example 1 cannot be used. Therefore, the size of the bottom side of the bag (1") is Despite being the same as the bag (1 ') in Reference Example 1 above, the custom-made bottom seal bar (21 ") for Reference Example 2 had to be used. In 2, the refillability into other containers is smoother than in Reference Example 1, but there is a disadvantage that the loss of the film material is extremely increased as shown in FIG.

Examples 2 and 3
FIG. 9 is a side view showing another example of the packaging bag of the present invention.
FIG. 10 is a side view showing still another example of the packaging bag of the present invention.
9 and 10, the parallelogram type of the body region (12) is a quasi-parallelogram, and the left and right side lines (s _L ), (s _R ) thereof have the same shape consisting of a polygonal line or a curved line. The case of a line is shown.

The packaging bag of the present invention can be used for the purpose of smoothly refilling liquid containers, shampoos, seasonings and the like into other containers.

It is the side view which showed an example of the packaging bag of this invention, (A) is the side view as it is, (B) has shown the state divided into the area | region for description. It is the top view which showed the state when manufacturing the bag (1) of FIG. It is a top view of a bottom seal bar (21). FIG. 4 is an explanatory view showing a state when sealing in the film width direction, and also shows a broken line-shaped width direction seal bar (22) for sealing in the film width direction. It is the top view which showed the state when manufacturing a bag (1 ') by a 2 picking system. This is the bottom seal bar (21 ') used in FIG. It is the top view which showed the state when manufacturing a bag (1 ") by a 2 picking method. It is a bottom seal bar (21 ") used in FIG. It is the side view which showed the other example of the packaging bag of this invention. It is the side view which showed the further another example of the packaging bag of this invention. It is the packaging bag which formed the spout in the corner area. This is an improvement of the packaging bag of FIG.

(1), (1 '), (1 ")… bag,
(11) ... bottom side region,
(12) ... trunk region,
(s _L ), (s _R ): left and right side lines of the parallelogram type of the body region (12),
(13)… Top side region,
(14)… Outlet area,
(21), (21 '), (21 ") ... bottom seal bar,
(22)… Width direction seal bar,
(g)… Bottom gusset

Claims (4)

A bag (1) that can be suspended and has a spout for the contents,
The bag (1) is in a flat side view,
A rectangular bottom region (11),
A parallelogram-shaped body region (12) connected from the upper side to the upper side of the bottom side region (11);
A top side region (13) connected to the upper side from the upper side portion near the obtuse angle of the parallelogram type of the trunk region (12);
-Having a basic shape consisting of a spout region (14) connected to the upper side from the upper side near the acute angle of the parallelogram-shaped body region (12); and
The bottom side region (11) is formed in the bottom gusset (g);
Packaging bag characterized by. The parallelogram type is a parallelogram or a quasi-parallelogram, and the left and right side lines (s _L ) and (s _R ) of the parallelogram type are lines composed of straight lines, polygonal lines, or curved lines. ,
The packaging bag according to claim 1. The parallelogram type is a parallelogram or a quasi-parallelogram, and the left and right side lines (s _L ) and (s _R ) of the parallelogram type are substantially the same consisting of straight lines, polygonal lines, or curved lines. A line of shape,
The packaging bag according to claim 1. In the parallelogram when assuming the straight line connecting the lower end and the upper end of each of the left and right side lines (s _L ), (s _R ) of the parallelogram type of the body region (12) as the left and right side lines,
The acute angle θ of the internal angles of the parallelogram is in the range of 60 to 85 °,
The packaging bag according to claim 2 or 3, wherein