Packaging bags

Abstract

In a packaging bag in which a spout 8 is formed by providing a cutout 7 on one side, the protruding dimension L of the spout 8 is increased while ensuring the discharge of the contents. [Solution] A notch 11 into which the bottle's mouth 12 fits is formed in at least the base side of the upper edge 8b of the spout 8. If the spout 8 were formed by a gouged portion 7, the packaging bag could not be tilted significantly when refilling the bottle, causing the gouged portion 7 to act as a weir and resulting in incomplete discharge of the contents. However, by providing the notch 11, the spout 8 can be tilted forward inside the bottle's mouth 12, allowing the packaging bag to be tilted significantly to the point where the gouged portion 7 no longer functions as a weir. Therefore, the spout 8 can be inserted deep into the bottle's mouth 12, preventing the contents from spilling, while allowing the contents to be discharged to the last.

Description

[Technical Field]

[0001] This invention relates to a packaging bag (pouch) made by welding one or more synthetic resin sheets. The synthetic resin sheets include single-layer and laminated sheets, and multi-layer sheets include those equipped with aluminum foil or aluminum vapor deposition film. [Background technology]

[0002] Packaging bags (pouch containers) made from one or two sheets of synthetic resin material are widely used for packaging various liquids (or fluids) due to their excellent gas barrier properties. These packaging bags are also often used for refilling liquid products. In either case, a pouring outlet is provided in part of the packaging bag. In particular, when used for refilling liquid products, most packaging bags are provided with a pouring outlet that is inserted into the mouth of a bottle.

[0003] The spout may be provided in a manner that protrudes outward from the outer periphery of the packaging bag, or in a manner that does not protrude outward from the packaging bag. As an example of the latter manner, Figure 3(b) of Patent Document 1 and Patent Document 2 disclose that a scoop is formed in an upper part of one side of the packaging bag, leaving the upper part, thereby forming a horizontal spout above the scoop.

[0004] In the configurations of Patent Documents 1 and 2, the spout does not protrude outside the packaging bag, which has the advantage of not wasting material when making the packaging bag and allowing for effective use of space when storing or displaying in a cardboard box. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2002-53150 [Patent Document 2] Japanese Patent Application Publication No. 04-215956 Summary of the Invention [Problem to be solved by the invention]

[0006] Not only in Patent Document 1, but in this type of packaging bag as well, the tip of the spout is closed, and when transferring the product into a bottle, the consumer cuts off the tip of the spout and then inserts it into the mouth of the bottle with the spout facing downwards.

[0007] However, when the inventors of the present application created a prototype similar to that of Patent Document 2 and tried to refill a bottle, they found that the packaging bag could not be tilted significantly, resulting in the contents remaining in the packaging bag. After studying this point, the inventors found that when a gouge is provided in the packaging bag, a recess that extends into the bag body is formed in the side weld, and therefore even when the packaging bag is moved to a horizontal position, the recess acts as a dam, preventing the contents from being completely discharged.

[0008] Therefore, with packaging bags that have a horizontal spout created by a notched portion, one issue is the reliability of discharge when refilling into a bottle. However, if the protruding dimension of the spout is increased to ensure that it does not come off the bottle, the recessed portion also becomes larger, which increases the amount of material that remains without being discharged, and it has been found that there is a conflict between preventing the spout from coming off the bottle and ensuring reliable discharge.

[0009] On the other hand, in this type of packaging bag, regardless of the means for forming the spout, a notch is provided at the spout to act as a trigger for cutting, and the sealed portion further forward than the notch is often picked up and torn by hand, but this has the problem that opening is difficult because the sealed portion is small and difficult to pick up. Also, the cut-off sealed portion becomes small pieces, which makes disposal as waste a hassle.

[0010] The present invention aims to improve this current situation. [Means for solving the problem]

[0011] The present invention includes various configurations, and typical examples are specified in each claim. Of these, the invention in claim 1 is a generic concept, "It is made by folding one sheet of material and welding the edges together, or by stacking multiple sheets of material and welding the edges together, and has a rectangular shape with left and right sides, a top side, and a bottom side. A packaging bag in which a hollowed-out portion is formed on the left or right side, leaving the upper portion unopened, and a horizontally oriented spout with a closed tip is formed above the hollowed-out portion, The spout is set so that the protruding dimension after opening is 50% or more of the width dimension, and the upper edge of the spout is formed with a notch into which the opening edge of the bottle fits when pouring into the bottle. The structure is as follows.

[0012] The invention of claim 2 is a development example of claim 1, "The hollowed portion is a right-angled triangle having an upper side, a vertical side, and a hypotenuse, and the intersection angle between the vertical side and the hypotenuse is 25 to 35 degrees, The protruding dimension of the spout after opening is 70% or more of the width dimension. The structure is as follows.

[0013] The invention of claim 3 is a development example of claim 1 or 2, "The notch is formed in at least a part of the base of the upper edge of the spout." The structure is as follows.

[0014] The invention of claim 4 is also a development example of claim 1 or 2, "The notch is formed over the entire length of the upper edge of the spout." In this case, "total length" also includes "almost total length." Specifically, approximately 90 to 110% of the total length is synonymous with the total length.

[0015] The invention of claim 5 is a development example of claim 4, "The notch is formed in a triangular shape that extends over the entire length of the spout, and the upper side of the hollowed portion is inclined so that it becomes higher toward the tip, thereby inclining the spout so that it becomes higher toward the tip." The structure is as follows.

[0016] The invention of claim 6 is a development example of claim 1 or 2, "A tab that is continuous with the tip of the spout is disposed in the recess, and the spout is configured to be opened by pulling up the tab." In this case, the tab can be in the form of either a tab that can be picked up and pulled by a person's fingertip, or a pull ring that can be inserted with a person's fingertip and pulled.

[0017] Claim 7 is also a development example of claim 1 or 2, "A notch is formed near the tip of the upper or lower edge of the spout for tearing and cutting off the seal, and the end of the seal opposite the notch is connected to the main body via a thin band." It is possible to combine the invention of claim 7 with the invention of claim 6. [Effects of the Invention]

[0018] In the present invention, the spout is designed so that its protruding dimension after opening is 50% or more of its width, allowing it to be securely inserted into the bottle. Furthermore, a notch is formed in the upper edge of the spout, allowing the spout to be tilted further within the mouth of the bottle, allowing the packaging bag to be tilted so that its bottom is higher. As a result, the contents are prevented from being blocked by the recessed portion, allowing the contents to be completely discharged into the bottle. Therefore, the present invention allows the contents to be safely transferred without remaining in the bottle.

[0019] The protruding dimension of the spout is preferably as small as possible while still ensuring the function of preventing the bottle from coming off. Furthermore, when refilling the bottle, it is necessary to ensure that the contents flow as smoothly as possible toward the spout. In this regard, by adopting the configuration specified in claim 2, the spout has a dimension that prevents it from coming off the bottle, while the recessed portion has a slope, allowing the contents to flow smoothly toward the spout during refilling.

[0020] Providing a notch partially on the upper edge of the spout, as in claim 3, has the advantage of maintaining a high seal strength of the spout. On the other hand, forming a notch along the entire length of the spout, as in claim 4, reduces the width of the spout, making it easier to insert the mouth of the bottle.

[0021] In the present invention, the spout is oriented horizontally, so that when the bottle is opened it only opens to the left and right sides, not upward, but it is permissible to tilt the spout diagonally upward as in claim 5. By tilting the spout upward, the angle formed by the slope of the recessed portion and the center line of the spout can be increased to 90° or an angle close to that, which increases the depth of fit between the spout and the bottle while also ensuring a reliable discharge function for the contents.

[0022] In the present invention, the hollowed-out portion becomes dead space that does not contribute to the storage of contents, but as described in claim 6, the hollowed-out portion can be used to place a tab. The tab can be sized to fit snugly between the fingers or formed into a ring shape that can be hooked onto, significantly improving the ease of opening the spout. Therefore, the container can be easily opened even with wet fingers.

[0023] The tab can be provided with a number of small holes to prevent finger slippage, or it can be embossed. Adding such auxiliary features can further ensure ease of opening.

[0024] In claim 7, the sealing part that forms the tip of the spout remains connected to the main body via the band even after opening, which reduces the effort required for disposal as waste. In this case, it is preferable to combine this with claim 6. [Brief explanation of the drawings]

[0025] [Figure 1] (A) is a front view of the first embodiment, (B) is a diagram showing the operation of the first embodiment, (C) is a partial front view of the second embodiment, (D) is a partial front view of the third embodiment, and (E) is a partial front view of the fourth embodiment. [Figure 2] FIG. 10 is a partial front view of the fifth embodiment. [Figure 3] FIG. 13 is a partial front view of the sixth embodiment. [Figure 4] 10A and 10B are diagrams showing a seventh embodiment, in which (A) is a partial front view before opening, and (B) is a partial front view after opening. [Figure 5] 10(A) is a partial front view of the eighth embodiment, FIG. 10(B) is a partial front view of the ninth embodiment, and FIG. 10(C) is a partial front view of the tenth embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0026] (1) First embodiment Next, embodiments of the present invention will be described with reference to the drawings. First, a first embodiment shown in Figures 1(A) and 1(B) will be described. In this embodiment, the packaging bag has two rectangular front and back films 1 and a circular or elliptical bottom film 2. The front and back films 1 sandwich the folded bottom film 2, and the four peripheries are welded together to form a basic structure. Therefore, it is a standing type.

[0027] The upper welded portion is designated by the reference number 3, the lower welded portion by the reference number 4, and the vertically long side welded portions by the reference numbers 5 and 6. Films 1 and 2 are laminated types in which a welding layer is laminated onto a base material, and it is also possible to use aluminum foil or aluminum film as one layer. It is also possible to use a structure in which a single film sheet is folded over and welded on three sides excluding the fold.

[0028] A gouged portion 7 is formed on one side of the packaging bag, excluding the upper end portion, thereby forming a horizontal spout 8 at the top of one side of the packaging bag. Therefore, the side welded portion 5 on one side has a lower edge 8a of the spout 8 and an inclined welded portion 5a that forms the oblique side of the gouged portion 7, and a recess is formed by the lower edge 8a of the spout 8 and the inclined welded portion 5a of the gouged portion 7. The connecting portion between the lower edge 8a of the spout 8 and the inclined welded portion 5a of the gouged portion 7 is rounded. The included angle θ1 formed by one side of the packaging bag (the vertical side of the gouged portion 7) and the inclined welded portion 5a is approximately 30°.

[0029] The gouge portion 7 is in the shape of a right triangle having an upper side, an imaginary vertical side, and a hypotenuse, so that the spout 8 is oriented horizontally, perpendicular to the longitudinal center line O of the packaging bag, and the tip of the spout 8 is formed by a sealed portion 8c that forms part of the side weld portion 5. The upper edge 8b of the spout 8 is formed by part of the upper weld portion 3, and a V-shaped notch 9 is formed in a part of the upper edge 8b near the tip. Therefore, the spout 8 can be opened by grasping the sealed portion 8c of the spout 8 and pulling it downward. The cut line is indicated by the symbol 10.

[0030] The spout 8 has a protruding dimension (length) L1 after opening that is set to approximately 85 to 90% of the vertical width W. This allows it to be inserted deeply into the mouth 12 of the bottle. An arc-shaped notch 11 is formed at the base of the upper edge 8b of the spout 8. It is preferable to form the notch 11 as deep as possible without impairing the seal strength. The protruding dimension L2 of the spout 8 before opening is greater than the vertical width W of the spout 8.

[0031] As shown in Figure 1(B), the bottle is filled by opening the spout 8 and then inserting it downward into the mouth 12 of the bottle. However, because the gouge 7 (recess) is recessed into the interior of the packaging bag, in order to dispense all of the contents, the inclined welded portion 5a must be in a horizontal position or in a position that is upright relative to the horizontal. This can be achieved by deforming the packaging bag, but because the side welded portion 5 has a ribbed effect and is strong, if the protruding dimension Ll of the spout 8 is long, it is difficult to tilt the inclined welded portion 5a significantly just by deforming the packaging bag.

[0032] However, in this embodiment, a notch 11 is formed in the upper edge 8b of the spout 8, and the notch 11 fits into the mouth 12 of the bottle, allowing the packaging bag to be tilted until the inclined welded portion 5a is in an upright position relative to the horizontal H. Therefore, even if the spout 8 is formed with a protruding length that fits securely into the mouth 12 of the bottle, the contents can be discharged to the last drop. The notch 11 can also be provided at a position deeper than the spout 8. In this case, the spout 8 can be inserted even deeper into the mouth 12 of the bottle.

[0033] (2) Other embodiments In the second embodiment shown in FIG. 1(C), the notch 11 is formed in a trapezoidal shape (it can also be formed in a triangular shape).

[0034] In the third embodiment shown in Figure 1(D), a cutout 11 is formed over substantially the entire length of the spout 8, and a notch 9 is formed in the lower edge 8a of the spout 8. In this third embodiment, as shown by the dashed dotted line, a tab 13 can be provided continuously to the lower end of the sealing portion 8c (providing a tab 13 can also be applied to the other embodiments).

[0035] In the fourth embodiment shown in Fig. 1(E), a notch 11 is partially formed in the upper edge 8b of the spout 8, and the inner surface of the spout 8 is inclined so that it rises toward the tip. Therefore, the angle θ2 formed by the center line 14 of the spout 8 and the inclined welded portion 5a is larger than in the first to third embodiments. Therefore, the inclination angle of the packaging bag can be made larger than in the first to third embodiments.

[0036] In the fifth embodiment shown in Fig. 2, when an arc-shaped cutout 11 is formed in the upper edge 8b of the spout 8, a downward bulge 15 is provided in the upper edge 8b of the spout 8, thereby making the width of the upper edge 8b uniform. Therefore, the provision of the cutout 11 does not reduce the seal strength of the upper edge 8b (or the upper welded portion 3). Furthermore, to prevent a reduction in the cross-sectional area of ​​the spout 8 due to the provision of the downward bulge 15 in the upper edge 8b, a downward bulge 16 is also formed in the lower edge 8a of the spout 8.

[0037] In the sixth embodiment shown in Fig. 3, the notch 11 is formed over the entire length of the spout 8, and the depth of the notch 11 is increased toward the base end of the spout 8, so that the angle θ3 formed by the center line 14 of the spout 8 and the longitudinal center line O of the packaging bag is an acute angle. Therefore, the angle θ2 formed by the center line 14 of the spout 8 and the inclined welded portion 5a of the scooped portion 7 can be set to 90° or an angle close to that. This allows the spout 8 to be inserted deeply into the mouth 12 of the bottle, while ensuring reliable discharge of the contents.

[0038] In this embodiment, a tab 13 is provided by utilizing the cutout portion 7. The tab 13 is shaped to close the cutout portion 7 (i.e., similar in shape to the cutout portion 7) and is connected to the inclined welded portion 5a via one or more bridges 17. The tab 13 is separated from the spout 8 and the inclined welded portion 5a by slits 18. The tab 13 also has multiple small holes 19 to increase friction with a person's fingertips. This prevents fingertip slippage and makes opening the container easier. Embossing can be used instead of the small holes 19 as a means to prevent slippage.

[0039] In this embodiment, the spout 8 is tilted and configured so that the tip of the spout 8 is positioned on the same straight line as the side welds 5, but as shown by the dashed dotted line, it is also possible to form the cutting line 10 in an orientation perpendicular to the protruding direction of the spout 8 and form the tip of the spout 8 in an orientation parallel to the tilted welds 5a. If a uniaxially stretched film is used as the film 1 and the stretching direction is set in an up-and-down orientation so that the cutting line 10 is in an orientation parallel to the side welds 5, 6, it can be easily torn by hand, but providing a tab 13 as in the embodiment makes it even easier to tear, which is preferable.

[0040] In the seventh embodiment shown in Fig. 4, a tab 13 is formed on the gouged portion 7, while the upper end of the sealing portion 8c of the spout 8 is connected to the upper welded portion 3 by a band 20. Therefore, in this embodiment, even after the spout 8 is opened, the tab 13 and sealing portion 8c remain connected to the packaging bag, making them easy to dispose of as waste. When refilling into a bottle, the tab 13 and sealing portion 8c can be shifted to the side of the mouth 12 of the bottle.

[0041] In this embodiment, the tab 13 is formed shorter than in the sixth embodiment, and the cutout portion 7 is formed in a trapezoidal shape. Therefore, below the cutout portion 7, a triangular portion 21 is formed that is continuous with the lower portion of the inclined welded portion 5a, and a relief hole 22 is formed in this portion 21.

[0042] The eighth embodiment shown in Fig. 5(A) is a modification of the first embodiment, in which the lower end of the sealing portion 8c of the spout 8 is connected to the inclined welding portion 5a via a band 20. Therefore, the sealing portion 8c remains connected to the packaging bag even after opening.

[0043] In the ninth embodiment shown in Figure 5(B), the tab 13 is arranged in the recess 7 and is formed into a ring shape that can be inserted with a fingertip. Therefore, it can be easily opened even with wet fingers. The tab 13 is separated from the spout 8 and the inclined welded portion 5a by a cut line 23, and is connected to the inclined welded portion 5a by a breakable bridge 17.

[0044] 5(C) is a modified example of the tab 13, which is formed in a D-shape. In this embodiment, the tab 13 is also separated from the spout 8 and the inclined welded portion 5a by a cut line 23.

[0045] Although the embodiments of the present invention have been described above, the present invention can be embodied in various other ways. For example, the upper edge of the packaging bag can be tilted so that the height increases toward the left or right, thereby forming the spout 8 in an inclined position. The spout can also be opened with scissors or a blade. [Industrial Applicability]

[0046] The present invention can be embodied in a packaging bag (pouch), and therefore has industrial applicability. [Explanation of symbols]

[0047] 1 Front and back films 2 Bottom film 3 Upper weld area 4 Lower weld 5,6 Side welded parts 5a Slanted weld 7. Recessed part 8 spout 8a Lower edge 8b Upper edge 8c Sealing part 9 notches 10 Imaginary cutting line 11 Cutout 12 Bottle mouth 13 Tabs 14 Center line of outlet 17 Bridge 18 Slit 20 bands

Claims

1. The container is made by folding a single sheet of material and welding the edges together, or by stacking multiple sheets of material together and welding the edges together, and has a rectangular shape with left and right sides, a top side, and a bottom side; A packaging bag in which a hollowed-out portion is formed on the left or right side, leaving the upper portion unopened, and a horizontally oriented spout with a closed tip is formed above the hollowed-out portion, The spout is set so that the protruding dimension after opening is 50% or more of the width dimension, and a notch is formed at the upper edge of the spout so that the opening edge of the bottle fits into it when pouring into the bottle. packaging bag.

2. the hollowed portion is in the shape of a right triangle having an upper side, a vertical side, and a hypotenuse, and the intersection angle between the vertical side and the hypotenuse is 25 to 35 degrees; The protruding dimension of the spout after opening is 70% or more of the width dimension. The packaging bag according to claim 1.

3. The notch is formed in at least a part of the base of the upper edge of the spout. The packaging bag according to claim 1 or 2.

4. The notch is formed over the entire length of the upper edge of the spout. The packaging bag according to claim 1 or 2.

5. The notch is formed in a triangular shape extending over the entire length of the spout, and the upper side of the hollowed portion is inclined so as to become higher toward the tip, thereby inclining the spout so as to become higher toward the tip. The packaging bag according to claim 4.

6. A tab continuous with the tip of the spout is disposed in the recess, and the spout is configured to be opened by pulling up the tab. The packaging bag according to claim 1 or 2.

7. A notch for tearing and cutting off the sealing portion is formed in a portion near the tip of the upper or lower edge of the spout, and the end of the sealing portion opposite the notch is connected to the main body via an elongated band. The packaging bag according to claim 1 or 2.

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