Packaging bag

Abstract

To provide a packaging bag which allows a bag body to be held easily, and in which a content is less likely to spill out of a spout.SOLUTION: A spout part is protrusively formed facing upward at an upper part of a bag body 1, and a handle part 3 separated from the spout part 2 is protrusively formed facing upward. The position of the upper end of the handle part 3 is set higher than the position of the upper end of a spout 5. Therefore, internal capacity of the bag body 1 is not restricted, and the bag body 1 is inclined with its self-weight, when the handle part 3 is nipped with fingers of one hand. Thus, a content can be poured from the spout 5 by supporting the bag body 1 from below using the other hand.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a packaging bag, and more particularly to a packaging bag in which a bag body is formed by sealing the outer edges of two or more sheets, and two of the sheets are sealed to provide a spout for pouring out the contents. [Background technology]

[0002] Standing pouches, which are free-standing packaging bags filled with liquid refill contents such as shampoo and detergent, are widely used. Some of these free-standing packaging bags have a wide pouring opening and an opening for filling the contents at a higher position than the pouring opening, separate from the pouring outlet for pouring the contents (the opening is sealed after the contents are filled). In these packaging bags, the upper part of the bag is bifurcated into a pouring outlet and a filling opening. The pouring outlet of such a free-standing packaging bag is formed by sealing two sheets, and the upper part of the pouring outlet for actually pouring the contents is blocked by sealing the sheets. When pouring the contents, the blocked part is cut and removed to open the pouring outlet, and the contents are poured out from the pouring outlet by holding and tilting the bag. When the pouring outlet is provided in the center of the width of the bag, the bag can be placed upside down on a container for refilling the contents to pour out the contents.

[0003] In such a freestanding packaging bag, there is no particular problem when pouring out a highly viscous content, but when pouring out a less viscous content, the content may overflow and spill out of the spout if the bag is gripped by hand. In particular, in a freestanding packaging bag having an opening for filling the content above the spout, the top of the bag on the side where the opening for filling the content is provided (which is sealed at that point) is folded downward to pour out the content, but the spout and the liquid level of the content are close to each other, so the content is more likely to overflow from the spout. In such a packaging bag, the one described in the following Patent Document 1 has handles formed by spreading parts of the side seal parts on both sides of the bag in the width direction at a position lower than the spout toward the inside of the bag in the width direction. When pouring out the content from the spout, the bag is held by picking up these two handles with both hands and pouring out the content. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2020-7016 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the packaging bag described in Patent Document 1, handles are formed by spreading part of the side seals on both sides of the bag widthwise inward in the widthwise direction of the bag at a position lower than the pouring outlet, so the internal volume is smaller than that of a bag of the same size and capacity, and the liquid level of the contents is higher accordingly. Therefore, although this packaging bag is easier to hold, the contents are more likely to spill out than bags without handles. The present invention has been made in consideration of the above problems, and an object of the present invention is to provide a packaging bag which can be easily held and in which the contents are less likely to spill out of the spout. [Means for solving the problem]

[0006] In order to achieve the above object, a packaging bag according to one embodiment of the present invention is characterized in that a bag body is formed by sealing two or more sheets made of a laminate at their outer peripheral edges, and two of the sheets are sealed at the top of the bag body to form a spout section that protrudes upward, wherein the two sheets forming the spout section are sealed at the top of the bag body to form a handle section that protrudes upward from the spout section, and when the spout formed in the spout section is open upward, the position of the upper end of the handle section is set higher than the position of the upper end of the spout. Effect of the Invention

[0007] According to the packaging bag of the present invention, a handle portion separate from the spout portion is formed to protrude upward, and the position of the upper end of this handle portion is set higher than the position of the upper end of the spout portion, so that the internal volume of the bag body is not restricted, and when the handle portion is pinched with the fingers of one hand, the bag body tilts under its own weight, and the bag body can be supported from below with the other hand, allowing the contents to be poured from the spout into, for example, an individual container, so that the contents are less likely to overflow from the spout. [Brief description of the drawings]

[0008] [Figure 1] 1 is a front view showing one embodiment of a packaging bag of the present invention. [Diagram 2] FIG. 2 is a cross-sectional view of the packaging bag of FIG. [Diagram 3] 2 is an explanatory diagram of the state in which the handle portion of the packaging bag in FIG. 1 is pinched with fingers. [Figure 4] FIG. 2 is an explanatory diagram of the packaging bag of FIG. 1 placed upside down on a container. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, an embodiment of the packaging bag of the present invention will be described in detail with reference to the drawings. The embodiments shown below are examples of devices and methods for embodying the technical idea of ​​the present invention, and the technical idea of ​​the present invention does not specify the materials, shapes, structures, arrangements, etc. of the components to the embodiments described below. In addition, the drawings are schematic. Therefore, it should be noted that the relationship and ratio between the thickness and the planar dimensions are different from the actual ones, and the drawings include parts where the relationship and ratio of the dimensions are different from each other.

[0010] Fig. 1 is a front view showing one embodiment of a packaging bag, and Fig. 2 is a cross-sectional view of the packaging bag of Fig. 1. This packaging bag is constructed by sealing (thermally welding) a plurality of sheets made of a laminate of resin films. Each sheet has a base layer 11 for obtaining various properties such as strength, flexibility, and impact resistance as the bag body 1, and a sealant layer 12 for sealing the sheets together, and an intermediate layer 13 may be provided between the two as necessary. Various materials can be used for the base layer 11, but films such as polyethylene terephthalate, biaxially oriented polypropylene, and biaxially oriented nylon are suitable as examples. Films such as low-density polyethylene, linear low-density polyethylene, high-density polyethylene, and non-oriented polypropylene that have heat sealability can be used for the sealant layer 12, but linear low-density polyethylene films are preferred from the viewpoints of sealability and flexibility. Films other than these can also be used for the sealant layer 12.

[0011] For the intermediate layer 13, a film having a function not present in the base layer 11 can be used, and for the barrier function, an aluminum-deposited plastic film, a transparent vapor-deposited plastic film, an aluminum foil, or the like can be used. Examples of materials for the plastic film include polyesters such as polyethylene terephthalate, polyolefins such as polypropylene, and polyamides such as nylon, and a biaxially oriented nylon film is preferable for obtaining strength such as impact resistance and pinhole resistance. For obtaining a barrier function, pinhole resistance, and impact resistance at the same time, an aluminum-deposited biaxially oriented nylon film can be used. Films other than these can also be used for the intermediate layer 13.

[0012] As described above, this packaging bag has a pouring outlet 2 for pouring out the contents, as well as a filling opening 4 for filling the contents into the bag body 1 (the opening 4 is closed by a seal in the figure). This packaging bag is composed of a lower surface sheet 14, an upper surface sheet 15, a back sheet 16, and a bottom sheet 17, each of which has a base layer 11, an intermediate layer 13, and a sealant layer 12. In this packaging bag, the bottom sheet 17 is folded back 180 degrees so that the sealant layer 12 is on the outside, and is sandwiched between the lower part of the sealant layer 12 of the lower surface sheet 14 and the lower part of the sealant layer 12 of the back sheet 16 with the fold line 20 facing upward, and both side seal parts 18 on both sides of the bag width direction of these sheets and a bottom seal part 19 at the bottom of the bag body are sealed to form the lower half and bottom part of the bag body 1. Furthermore, the top surface upper sheet 15 is folded 180° along the fold line 21 so that the sealant layer 12 is on the outside, and is sandwiched between the top of the sealant layer 12 of the back surface sheet 16 and the top of the sealant layer 12 of the bottom surface sheet 14 with the fold line 21 facing downward, and both side seal parts 18 of the top surface upper sheet 15 and the back surface sheet 16 are sealed to form the upper half of the bag body 1 and the filling opening 4, while the pouring outlet seal part 22 and the handle seal part 23 of the top surface upper sheet 15 and the bottom surface sheet 14 are sealed to form the pouring outlet part 2 and the handle part 3. That is, as described above, the top of the bag body 1 is bifurcated into a side where the pouring outlet part 2 is provided and a side where the filling opening 4 is provided.

[0013] FIG. 1 shows a state in which the filling opening 4 is sealed and closed, and therefore shows a state after the contents are filled through the filling opening 4. In this packaging bag, the fold line 21 of the top sheet 15 is located at the center of the height direction of the bag body 1, and the distance from the fold line 21 to the filling opening 4 is set longer than the distance from the fold line 21 to the tip of the spout 2. That is, the top end position of the filling opening 4 is set higher than the top end position of the spout 2, and the opening of the filling opening 4 is large, so that the contents can be easily filled. In addition, the sealing parts of the spout 2 and the handle 3 may seal the top sheet 15 and the bottom sheet 14 formed in advance as shown in the figure, or, for example, after sealing the necessary parts of the top sheet 15 and the bottom sheet 14 having square ends, the unnecessary parts may be cut off so that the spout 2 and the handle 3 remain. In this embodiment, the top end position of the handle 3 is set higher than the top end position of the spout 5. Moreover, the handle portion 3 is formed on only one side of the spout portion 2 .

[0014] As described above, the spout 5 for actually pouring out the contents is closed by sealing two sheets constituting the spout portion 2, i.e., the top surface sheet 15 and the bottom surface sheet 14, and the closed portion 25 is cut and removed. In this example, a cut (full cut) 26 is provided at both ends of the opening line 6 shown by the dashed line in Fig. 1, so that when the closing portion 25 is picked up with fingers and pulled, the closing portion 25 is cut from the cut 26 to the opening line 6, and can be removed. In addition, in the self-standing packaging bag provided with the filling opening 4, the position of the filling opening 4 (sealed) is higher than the upper end position of the spout 5, so at least before the contents are poured out from the spout 5, the upper portion of the bag body 1 made of the top surface sheet 15 and the back surface sheet 16 is folded downward toward the back side of the paper in Fig. 1 at the folding line 21. The folding back of the upper part of the bag body 1 downwards does not have to be done immediately before pouring the contents from the spout 5; for example, if a packaging bag filled with contents and with the filling opening 4 closed is sold as a product, it may be folded back while it is still in the product state.

[0015] The spout 2 (pouring outlet 5) of the packaging bag of this embodiment is provided in the center of the width of the bag body 1, and a handle 3 is provided protruding upward from one side, the right side in the figure. The spout 2 is an isosceles trapezoidal shape that gradually widens downward from the upper spout 5 at the upper end, and the upper end of the upper surface sheet 15 and the upper end of the lower surface sheet 14 are sealed from the lower end of the spout 2 toward both sides in the width direction of the bag body to form the spout side seal 24. Of the upper edge of the spout side seal 24, both lower ends of the spout 2 are recessed in a semicircular shape, and the peripheral portion of the injection port 9 of the container 8 described later fits into this recess 7. The handle 3 extends upward from the spout side seal 24 on the right side of the spout 2, and there is no boundary in the sealed portion with the handle seal 23. The right end of the handle 3 in the width direction of the bag is rectangular, and the handle 3 is inclined so that it gradually narrows upward on the side of the spout 2. This makes it possible to prevent interference between the container 8 (particularly the pouring port 9) and the handle 3 when the bag 1 is turned upside down and placed over the container 8, as described below.

[0016] FIG. 3 shows a state where the closure portion 25 of the spout 2 is removed, the upper portion of the bag body 1 is folded back downward, and the handle portion 3 is pinched with the fingers of one hand to lift the packaging bag (the state of the contents is not shown). In this embodiment, the packaging bag has the handle portion 3 formed only on one side of the spout portion 2 (spout 5) provided in the center of the bag body in the width direction, so that the packaging bag is generally lifted by pinching the handle portion 3 with the fingers of one hand. Since the contents have not yet been poured out from the spout 5, the bag body 1 is filled with the contents, and the packaging bag lifted mainly due to the weight of the contents tilts so that the handle side is on top and the opposite side of the bag body 1 in the width direction is on the bottom. At this time, the position of the upper end of the handle portion 3 is set higher than the position of the upper end of the spout 5, so that by appropriately setting the height H of the sealed portion of the handle portion 3 as described later, it is possible to tilt the packaging bag appropriately so that the contents do not overflow from the spout 5. From this state, for example, when pouring the contents of the packaging bag into a refill container 8, the bag body 1 of the lifted packaging bag is lifted while being supported from below with the other hand, and the packaging bag is further tilted. Once the contents of the packaging bag start to be poured into the refill container 8, for example, as shown in FIG. 4, the packaging bag may be turned upside down, the spout 2 may be inserted into the injection port 9 of the container 8, and the bag body 1 may be placed on the container 8. At this time, the peripheral portion of the injection port 9 of the container 8 enters the recess 7 of the side seal portion 24 of the spout portion, and the posture of the packaging bag is stabilized. Once the pouring of the contents into the container 8 is completed, for example, the empty bag body 1 may be folded and the packaging bag may be discarded. EXAMPLES

[0017] A 15 μm-thick base layer 11 made of a biaxially oriented nylon film, a 12 μm-thick intermediate layer 13 made of an aluminum-deposited polyethylene terephthalate film, and a 100 μm-thick sealant layer 12 made of a linear low-density polyethylene film were laminated together, and these were then coated with a two-component curing ester-based urethane curing agent adhesive (application amount 3.0 g / m 2) to prepare a sheet material, and this sheet material was used to prepare the lower surface sheet 14, the upper surface sheet 15, the back sheet 16, and the bottom sheet 17. These sheets were used to prepare a bag body 1 with a height from the bottom to the fold line 21 of 110 mm, a width of 125 mm, and a height of 216 mm, and the height H (see FIG. 1) of the handle part 3 was changed in various ways to prepare the self-supporting packaging bags of Examples 1 to 4. The packaging bag of the comparative example was one in which the handle part 3 was not protruding and only the spout side seal part 24 was formed. Water was used as the content, and for the content volumes of 300 mL and 400 mL, the handle part 3 was pinched with one hand (in the comparative example, the bag body 1 was gripped from both sides in the width direction) to lift the packaging bag, and the pourability (sensory evaluation) when pouring the entire content into the refill container 8, whether it spilled when pouring, the content felt when pouring, and the time required for pouring were measured. The pouring time was the time from lifting the packaging bag to pouring the entire amount of the contents (including the on / off time of the timer). The measurement results are shown in Table 1 below. The overall evaluation was expressed as ○ = good, △ = acceptable, × = unacceptable. The contents spilled mainly due to the contents overflowing from the pouring outlet 5.

[0018] [Table 1]

[0019] As is clear from Table 1, in the packaging bags of the Examples having the handle portion 3 whose upper end is higher than the upper end of the spout 5, all of the contents can be poured into the container 8 without spilling (overflowing), except for the packaging bag of Example 4 in which the content volume is 400 mL. In contrast, in the packaging bag of the Comparative Example in which the contents cannot be poured into the container 8 unless the bag body 1 is gripped from both sides in the width direction, the contents overflow and spill regardless of the content volume. In addition, in the packaging bag of the Example in which the contents can be poured into the container 8 without overflowing, the pouring is completed in a shorter time than the packaging bag of the Comparative Example. On the other hand, in the packaging bag of Example 4 in which the height of the handle portion 3 is too large, the packaging bag shakes when pouring the contents, making it difficult to pour, and the time required to complete the pouring is longer than that of the Comparative Example because the pouring is done carefully. From this, it can be seen that the appropriate height of the seal portion of the handle portion 3 is 30 mm to 60 mm, and the optimum height is 30 mm to 50 mm.

[0020] In this way, in the packaging bag of this embodiment, the handle portion 3 protrudes upwardly and is separate from the spout portion 2, and the position of the upper end of this handle portion 3 is set higher than the position of the upper end of the spout 5, so that the internal volume of the bag body 1 is not restricted, and when the handle portion 3 is pinched with the fingers of one hand, the bag body 1 tilts under its own weight, and the bag body 1 can be supported from below with the other hand, and the contents can be poured from the spout 5 into, for example, an individual container 8, so that the contents are less likely to overflow from the spout 5.

[0021] Furthermore, since only one handle portion 3 is formed on the side of spout portion 2, bag body 1 can be tilted reliably by grasping and lifting handle portion 3 with one hand. Furthermore, by setting the height of the sealed portion of handle 3 to 30 mm to 50 mm, it is possible to reliably prevent the contents from spilling out of spout 5 when bag 1 is tilted. In addition, even in a self-supporting packaging bag having a filling opening 4, i.e., a packaging bag in which the liquid level of the contents is close to the spout 5, it is possible to prevent the contents from overflowing from the spout 5.

[0022] The packaging bag according to the embodiment has been described above, but the present invention is not limited to the configuration described in the above embodiment, and various modifications are possible within the scope of the gist of the present invention. For example, in the above embodiment, only a free-standing packaging bag in which the filling opening 4 is provided separately from the spout 2 has been described, but the present invention can also be applied to a free-standing packaging bag in which the filling opening 4 is not provided separately from the spout 2. Similarly, the present invention can also be applied to a packaging bag that is not free-standing. [Explanation of symbols]

[0023] 1 bag body 2 Spout part 3 Handle 4 Filling opening 5 spout 11 Base material layer 12 Sealant layer 13. Middle Class 14 Lower surface sheet 15 Top surface sheet 16 Back sheet 17 Bottom sheet 18 Side seal part 19 Bottom seal part 21 Folding Line 22 Outlet seal 23 Handle seal

Claims

1. A packaging bag in which a bag body is formed by sealing two or more sheets made of a laminate at their outer periphery, and two of the sheets are sealed at an upper portion of the bag body to form a spout portion protruding upward, The two sheets forming the spout are sealed at the top of the bag body to form a handle portion separate from the spout portion and protruding upward; A packaging bag in which, when a spout formed in the spout portion is open facing upward, the position of the upper end of the handle portion is set higher than the position of the upper end of the spout.

2. The packaging bag according to claim 1 , wherein the handle portion is formed on one side of the spout portion.

3. 2. The packaging bag according to claim 1, wherein the height of the sealed portion of the handle is 30 mm to 50 mm.

4. The bag body is composed of a lower surface sheet, an upper surface sheet, a back sheet, and a bottom sheet, each of which has a base layer and a sealant layer; The bottom sheet is folded 180° so that the sealant layer is on the outside, and sandwiched between the lower part of the sealant layer of the lower surface sheet and the lower part of the sealant layer of the back surface sheet, and both side seal parts and the bottom seal part of these sheets are sealed to form the lower half and the bottom part of the bag body; The upper surface sheet is folded 180° along the fold line so that the sealant layer is on the outside, and is sandwiched between the upper part of the sealant layer of the back sheet and the upper part of the sealant layer of the lower surface sheet, and both side seal parts of the upper surface sheet and the back sheet are sealed to form the upper half of the bag body and a filling opening, and the pouring outlet seal part and the handle seal part of the upper surface sheet and the lower surface sheet are sealed to form the pouring outlet part and the handle part, The packaging bag according to claim 1 , wherein the fold line is located at the center of the bag body in the height direction, and the distance from the fold line to the filling opening is longer than the distance from the fold line to the tip of the spout portion.

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