JPWO2016031429A1 - bag - Google Patents

Abstract

Provided is a bag in which the operation of refilling a liquid into a bottle can be performed in a short time while preventing the spout portion from being blocked. The spout portion of the bag has a pair of spout portion seals facing each other with a bisector that bisects the spout portion along the spout direction. The pair of spout portion seals includes a pair of first seal portions extending from the planned opening portion toward the main body portion, and a pair of second seal portions positioned between the pair of first seal portions and the main body portion. Contains. The first seal portion and the second seal portion have a length L1 of the first seal portion in the direction along the bisector, and an angle formed by one inner edge and the other inner edge of the pair of first seal portions. When α is α and the angle between one inner edge of the pair of second seal portions and the other inner edge is β, the length L1 ≦ 9 mm, the angle α ≧ 30 °, and the angle α <angle β are established. Has been.

Description

  The present invention belongs to the technical field of pouches for hermetically packaging liquids. For example, the present invention relates to a refill bag for transferring a stored liquid to a container such as a bottle at the time of use.

  In general, household liquid detergents are sold in plastic bottles with spouts that are convenient for handling. In order to use this bottle repeatedly, a refill bag containing a liquid such as a replenishing liquid detergent is also sold at the same time. The refill bag has a main body part in which a storage part for storing liquid is formed, and a spout part connected to the main body part through which the liquid passes when the liquid is taken out from the bag. In the refill bag, the liquid rectified by passing through the spout port is poured out from the refill bag.

  In general, a refill bag is made of a flexible packaging material such as a plastic film that is lightweight and excellent in productivity. On the other hand, in a refill bag made of soft packaging material, the opening property of the spout part and the shape retention of the spout part are poor, and therefore, the problem that the spout part tends to be blocked in the middle of the liquid spout. is there. For example, the part located in the vicinity of the spout part of the main body part swells during pouring, and the spout may be blocked by the pressure of the liquid at this time.

  In order to solve such a problem, for example, Patent Document 1 proposes inserting a pipe into the spout portion. In this case, the liquid that has flowed into the spout from the main body passes through the inside of the pipe and is discharged to the outside of the refill bag. Moreover, it is possible to prevent the spout portion from being blocked by using a material having high rigidity as the material constituting the pipe.

JP-A-11-59703

  When a pipe is inserted into the spout part as in Patent Document 1, the flow path of the spout part is narrowed by the cross-sectional area of the pipe. For this reason, it is thought that the flow rate of the liquid in a spout part reduces, As a result, the time which a pouring requires will become long. The increase in the time required for dispensing is considered to be remarkable particularly when the viscosity of the liquid is high. Therefore, it is difficult to use a pipe as described in Patent Document 1 particularly when a liquid having high viscosity is accommodated in the refill bag.

  An object of this invention is to provide the bag which can solve such a subject effectively.

  The present invention is a refill bag for storing a liquid to be refilled into a bottle, which is connected to the main body part in which a storage part for storing the liquid is formed, and the liquid passes when the liquid is refilled into a bottle. A spout part, and the spout part is a part to be opened that is a spout from which liquid is spouted by being opened, and a second part that bisects the spout part along the spout direction A pair of spout portion seals facing each other with a branch line as a boundary, the pair of spout portion seals extending from the planned opening portion toward the main body portion, and the pair of spout portions A pair of second seal portions positioned between the first seal portion and the main body portion, wherein the length of the first seal portion in the direction along the bisector is L1, and the pair The angle formed by one inner edge and the other inner edge of the first seal portion Is α, and the angle between one inner edge and the other inner edge of the pair of second seal portions is β, the length L1 ≦ 9 mm, the angle α ≧ 30 °, and the angle α <angle β is established. The pair of second seal portions is a refill bag configured to partially enter the inside of the bottle when the liquid is refilled into the bottle.

  The refill bag by this invention WHEREIN: The said spout part may be located between the upper part and side part of the said main-body part. In this case, the angle β is preferably 110 ° or less.

  In the refill bag according to the present invention, the length L1 is preferably 5 mm or more.

  According to the present invention, the spout part of the refill bag is divided into two parts that divide the spout part into two equal parts along the spout direction, and a part to be opened that serves as a spout from which liquid is spouted by being opened. A pair of spout seals facing each other with a line as a boundary. The pair of spout portion seals includes a pair of first seal portions extending from the planned opening portion toward the main body portion, and a pair of second seal portions positioned between the pair of first seal portions and the main body portion. Contains. The first seal portion and the second seal portion have a length L1 of the first seal portion in the direction along the bisector, and an angle formed by one inner edge and the other inner edge of the pair of first seal portions. When α is α and the angle between one inner edge of the pair of second seal portions and the other inner edge is β, the length L1 ≦ 9 mm, the angle α ≧ 30 °, and the angle α <angle β are established. Has been. In this case, the 1st seal part can play the role of ensuring sufficiently the insertability of the spout part of the refill bag with respect to the mouth part of a bottle, preventing that the spout part obstruct | occludes. In addition, when the liquid is refilled into the bottle, the second seal portion appropriately controls the flow rate of the liquid at the spout portion and stably maintains the state where the spout portion of the refill bag is inserted into the mouth portion of the bottle. Can play a role. For this reason, according to this invention, the operation | work which refills a liquid into a bottle can be easily implemented in a short time, preventing that a spout part closes.

FIG. 1 is a front view showing a bag according to an embodiment of the present invention. FIG. 2 is an enlarged front view showing a spout portion of the bag of FIG. 1 and its vicinity. FIG. 3 is a view for explaining an angle α formed by a pair of first seal portions and an angle β formed by a pair of second seal portions of the spout portion seal. FIG. 4 is a diagram illustrating a state when liquid is refilled from a refill bag to a bottle. FIG. 5 is a cross-sectional view showing an example of the state of the bag when the liquid is poured out in the direction along the bisector of FIG. 4. FIG. 6 is a cross-sectional view showing an example of a layer structure of a film constituting the refill bag. 7A, 7B, and 7C are views showing an example of a method for manufacturing a refill bag. FIG. 8 is a diagram illustrating a state in which the length L1 is changed in the first embodiment. FIG. 9 is a diagram illustrating a state in which the angle α is changed in the third embodiment. FIG. 10 is a diagram for explaining a method for evaluating restoration in the first embodiment. FIG. 11A is a view showing the spout portion in a prevented state, and FIG. 11B is a view showing the spout portion in a restored state. FIG. 12 is a front view showing a bag according to a modification of the embodiment of the present invention. FIG. 13 is a front view showing a bag according to a modification of the embodiment of the present invention.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 7A, 7B, and 7C. Note that, in the drawings attached to the present specification, for convenience of illustration and understanding, the scale and vertical / horizontal dimension ratios are appropriately changed and exaggerated from those of the actual ones.

  Furthermore, terms used in the present specification for specifying shapes and geometric conditions, for example, terms such as “parallel”, “orthogonal” and “bisector” are not limited to strict meanings, The embodiment of the present invention is interpreted to allow an error within a range where the intended effect can be expected.

Refill Bag FIG. 1 is a front view showing an entire refill bag 10 according to the present embodiment. The bag 10 is configured to contain a liquid that can be refilled into a bottle. The bag 10 is comprised by heat-welding the surface film 11 which comprises the surface, the back film 12 which comprises a back surface, and the bottom film 13 used as needed so that it may mention later. In the following description and drawings, the bag 10 is a bag before the liquid is stored unless otherwise specified. Unless otherwise specified, the front film 11 and the back film 12 constituting the bag 10 have symmetrical shapes. That is, the front side component and the back side component of the bag 10 are substantially the same. Therefore, in the following description, the shape on the front surface side will be mainly described, and the description on the shape on the back surface side will be omitted.

  In the present embodiment, an example in which the bag 10 is of a self-supporting type will be described. For example, the bag 10 is a so-called bottom gusset bag in which a gusset is formed at the bottom 23 thereof. In the present specification, the names “bottom”, “upper”, and “side” represent the position and direction of the bag 10 and its constituent elements based on the state in which the bag 10 is self-supporting. The gusset of the bottom 23 is formed, for example, by inserting a bottom film 13 folded so as to protrude upward between the front film 11 and the back film 12. In FIG. 1, the fold line of the folded bottom film 13 is indicated by reference numeral 13a.

  Moreover, as long as the spout part 15 mentioned later is formed, the type of the bag 10 by this Embodiment is not specifically limited. For example, the bag 10 may be a so-called three-sided seal bag in which a seal portion obtained by heat welding a film is formed along three edges of the bag 10. Further, the bag 10 may be a so-called four-side sealed bag in which a seal portion obtained by heat-welding a film is formed along four edges of the bag 10.

  As shown in FIG. 1, the bag 10 includes a main body part 14 in which a storage part 14 s in which a liquid is stored is formed, and a spout part 15 connected to the main body part 14. The spout portion 15 is a portion through which the liquid passes when the liquid is taken out from the bag 10, and the width of the spout portion 15 is narrower than the width of the accommodating portion 14 s of the main body portion 14. In addition, the main-body part 14 and the spout part 15 are mutually comprised integrally in the part to which both are connected. Specifically, in the part to which the main body part 14 and the spout part 15 are connected, both the main body part 14 and the spout part 15 are constituted by the front film 11 and the back film 12. In the present embodiment, an example in which the entire spout portion 15 is configured by the front film 11 and the back film 12 that are common to the main body portion 14 is shown. Hereinafter, the main body part 14 and the spout part 15 will be described.

  Various liquids such as liquid detergents and shampoos can be considered as liquids stored in the bag 10. Note that the bag 10 according to the present embodiment can be refilled with liquid for a short time while preventing the spout 15 from being clogged even when liquid with high viscosity such as shampoo, rinse, conditioner, etc. is accommodated. It is specifically intended to be implemented in Therefore, the advantage brought about by the bag 10 according to the present embodiment becomes more conspicuous when the viscosity coefficient of the liquid contained in the bag 10 is 1 Pa · s or more, for example, in the range of 5 to 20 Pa · s.

(Main body)
The main body 14 includes a bottom 23 sealed by a bottom seal 23a, a pair of side parts 22 sealed by a side seal 22a, and an upper part 21. The upper part 21 is an opening 21b that is opened when the bag 10 is filled with liquid. After the bag 10 is filled with the liquid, the upper part 21 is sealed by heat welding or the like. In FIG. 1, a portion to be thermally welded after being filled with a liquid is indicated by reference numeral 21a as an upper seal scheduled portion. In the present embodiment, the spout portion 15 is located between the upper portion 21 and the side portion 22 of the main body portion 14.

(Outlet part)
Next, the spout part 15 will be described. The spout portion 15 is configured to extend along a pouring direction in which the liquid is poured when the liquid is refilled into a bottle. By providing such a spout 15, the flow of the liquid when being poured out from the bag 10 can be adjusted, and thereby the refilling operation of the liquid can be facilitated. In the present embodiment, an example in which the direction in which the spout portion 15 extends is inclined with respect to both the direction in which the upper portion 21 and the side portion 22 of the main body portion 14 extend is shown. There is no limit. For example, the direction in which the spout part 15 extends may be parallel to the direction in which the upper part 21 or the side part 22 of the main body part 14 extends.

  The spout part 15 includes a scheduled opening part 18 that becomes a spout from which liquid is poured out by opening. The unscheduled opening portion 18 may be provided with easy-opening means for easily opening the bag 10. For example, the planned opening portion 18 may include an easy opening line 18a such as a half-cut line formed by laser processing or a cutter. In this case, a plurality of easy-opening lines 18a extending substantially parallel to each other may be provided. In addition, a stretched film may be included in the laminated film constituting the front film 11 and the back film 12, and the stretched direction of the stretched film and the direction in which the planned opening portion 18 extends may coincide with each other. In addition, a notch may be formed at the end of the planned opening portion 18. Moreover, the display for showing to a user that it is an opening place may be provided in the scheduled opening part 18 by printing etc.

  A cutout may be formed on the side of the spout portion 15. For example, in the bag 10 according to the present embodiment, notches are formed on both sides of the spout portion 15. Of the two notches, the notch formed on the upper portion 21 side is denoted by reference numeral 24, and the notch formed on the side portion 22 side is denoted by reference numeral 25.

  As shown in FIG. 1, the part extended toward the spout part 15 from the upper part 21 may be heat-welded. Hereinafter, such a heat-welded portion is also referred to as an entrance seal 24a. Preferably, the entrance seal 24 a extends so as to be orthogonal to the opening 21 b of the upper portion 21. As a result, the degree of opening in the opening 21b can be further increased, thereby facilitating the operation of filling the main body 14 with the liquid via the opening 21b.

  As shown in FIG. 1, also in the spout part 15, a pair of edge part which opposes on both sides of the bisector 19 mentioned later is heat-welded. In the following description, the heat welding part in the spout part 15 formed by heat-welding a pair of opposing edge part is called a pair of spout part seal | sticker 15a.

  Next, the spout part 15 will be described in detail with reference to FIG. FIG. 2 is an enlarged front view showing the spout 15 and the vicinity thereof of the bag 10 of FIG. As shown in FIG. 2, the pair of spout portion seals 15 a of the spout portion 15 includes a pair of linear first seal portions 16 extending from the planned opening portion 18 toward the main body portion 14 and a pair of first seals. And a pair of linear second seal portions 17 located between the portion 16 and the main body portion 14. The inner edge 16a of the first seal portion 16 and the inner edge 16b of the first seal portion 16 and the inner edge 17a of the second seal portion 17 and the inner edge 17b of the second seal portion 17 extend linearly. As long as the effect of the present invention is not hindered, the inner edge 16a of the first seal portion 16 and the inner edge 17a of the second seal portion 17 are connected via a connecting portion having an arc shape or a linear shape. Similarly, the inner edge 16b of the first seal portion 16 and the inner edge 17b of the second seal portion 17 may be coupled via a coupling portion having an arc shape or a linear shape. As shown in FIG. 3, the pair of first seal portions 16 and the pair of second seal portions 17 have a pair of angles α formed by one inner edge 16a and the other inner edge 16b of the pair of first seal portions 16. The second seal portion 17 is configured to be smaller than an angle β formed by one inner edge 17a and the other inner edge 17b. That is, in the pair of first seal portions 16, the liquid flow path formed between the pair of first seal portions 16 extends longer than the liquid flow path formed between the pair of second seal portions 17. It is configured as follows. In other words, in the pair of second seal portions 17, the liquid flow path formed between the pair of second seal portions 17 is more than the liquid flow path formed between the pair of first seal portions 16. It is configured to spread sharply in the width direction. As described above, in the present embodiment, the spout portion 15 includes at least two types of seal portions configured so that the width of the liquid flow path is different.

  Of the pair of first seal portions 16 and the pair of second seal portions 17, the pair of elongated first seal portions 16 sufficiently inserts the spout portion 15 of the bag 10 into the mouth portion 31 of the bottle 30. It is a part provided to ensure. Specifically, the pair of first seal portions 16 are configured to completely enter the inside of the bottle 30 when refilling the liquid into the bottle 30, more specifically, the inside of the mouth portion 31 of the bottle 30. Yes. Here, “completely penetrates the inside of the mouth portion 31 of the bottle 30” means that when the spout portion 15 of the bag 10 is inserted into the mouth portion 31 of the bottle 30, as shown in FIG. It means that the outer edge of one seal part 16 has penetrated into the bottle 30 beyond the end part 32 of the mouth part 31 of the bottle 30 over the entire region. 4 shows that the spout portion 15 of the bag 10 opened along the planned opening portion 18 is inserted into the bottle 30 so that the bisector 19 of the spout portion 15 is parallel to the axial direction of the bottle 30. It is a figure which shows a mode that it is being performed. By providing such a pair of first seal portions 16 at the spout portion 15, the user of the bag 10 has a sufficient feeling of insertion when inserting the spout portion 15 of the bag 10 into the bottle 30. Can be obtained. In addition, it is possible to stably control the dispensing direction of the liquid that is poured out from the spout port 15 of the bag 10 that is inserted into the bottle 30.

  Note that “the angle α formed by one inner edge 16a and the other inner edge 16b of the pair of first seal portions 16” specifically means one of the pair of first seal portions 16 as shown in FIG. It is an angle formed by a line that virtually extends the inner edge 16a outward (side away from the main body 14) and a line that virtually extends the other inner edge 16b outward. Similarly, “the angle β formed by one inner edge 17a and the other inner edge 17b of the pair of second seal portions 17” specifically refers to the angle of the pair of second seal portions 17 as shown in FIG. This is an angle formed by a line virtually extending one inner edge 17a outward and a line virtually extending the other inner edge 17b outward.

  The pair of second seal portions 17 are portions that are provided to appropriately control the flow rate of the liquid flowing from the main body portion 14 into the flow path between the pair of first seal portions 16. If the pair of first seal portions 16 is directly connected to the main body portion 14, the cross-sectional area of the liquid flow path suddenly changes at the boundary between the main body portion 14 and the first seal portion 16. The liquid excessively flows into the flow path between the first seal portions 16, and as a result, the main body portion 14 swells around the boundary between the main body portion 14 and the first seal portion 16, and the spout portion 15 is blocked. It is possible. Here, according to the present embodiment, by providing the pair of second seal portions 17 satisfying the condition of angle α <angle β between the pair of first seal portions 16 and the main body portion 14, An abrupt change in the cross-sectional area of the flow path of the liquid flowing into the spout portion 15 can be suppressed. Moreover, compared with the case where a pair of 1st seal | sticker part 16 is extended and connected to the main-body part 14, the time which liquid extraction requires can be shortened.

  Further, the pair of second seal portions 17 partially penetrates the inside of the mouth portion 31 of the bottle 30 when the liquid is refilled into the bottle 30, so that the spout portion 15 of the bag 10 enters the mouth portion 31 of the bottle 30. It can also play a role of maintaining the inserted state stably. Here, “partially invades the inside of the mouth portion 31 of the bottle 30” means that when the spout portion 15 of the bag 10 is inserted into the mouth portion 31 of the bottle 30, as shown in FIG. It means that the outer edges of the second seal portion 17 abut on the end portion 32 of the mouth portion 31 of the bottle 30. In this case, the bag 10 is based on the elastic repulsive force generated by the pair of second seal portions 17 being bent by the pair of second seal portions 17 being pushed from the end portion 32 of the mouth portion 31 of the bottle 30. The posture and position of the spout port 15 are more stably maintained with respect to the bottle 30.

  Preferably, the pair of second seal portions 17 is configured such that the distance between the surface film 11 and the back film 12 is sufficiently maintained in the portion of the second seal portion 17 as shown in FIG. . FIG. 5 is a cross-sectional view showing an example of the state of the bag when the liquid is poured out in the direction along the bisector 19 of FIG. In the example shown in FIG. 5, the gap between the surface film 11 and the back film 12 is sufficiently maintained in the second seal portion 17, so that the portion on the inner side of the end portion 32 of the mouth portion 31 is maintained. The flow path between the pair of second seal portions 17 extends in a funnel shape. As shown in the examples described later, the surface film is formed by setting the angle β formed by one inner edge 17a and the other inner edge 17b of the pair of second seal portions 17 to 110 ° or less, more preferably 100 ° or less. The space | interval between 11 and the back film 12 can be ensured appropriately.

  By the way, the feeling of insertion when inserting the spout part 15 of the bag 10 into the bottle 30 is such that the longer the length L1 of the pair of first seal parts 16 is, the more the pair of inner edges of the pair of first seal parts 16 are. The smaller the angle α is, the higher it is. On the other hand, the longer the length L1 of the pair of first seal portions 16 is, or the smaller the angle α formed by the pair of inner edges of the pair of first seal portions 16 is, the smaller the distance between the pair of first seal portions 16 is. It is conceivable that the resistance exerted on the liquid by the flow path becomes larger, and eventually the spout 15 is blocked. Therefore, in order to prevent the outlet 15 from being blocked, the length L1 of the pair of first seal portions 16 is set to a predetermined upper limit value or less, and the angle α formed by the pair of inner edges of the pair of first seal portions 16 Is preferably set to be equal to or greater than a predetermined lower limit. In the present embodiment, “blocking” means a state in which the liquid in the spout portion 15 does not flow even when the main body portion 14 of the bag 10 is pressed with a predetermined pressing force. . As the value of the predetermined pressing force, for example, 15 to 20N can be adopted.

  As a result of repeated experiments by the present inventors, the length L1 of the pair of first seal portions 16 is set to 9 mm or less in order to prevent the spout portion 15 from being blocked as supported by the embodiments described later. Then, it has been found that it is effective to set the angle α formed by the pair of inner edges of the pair of first seal portions 16 to 30 ° or more. Hereinafter, the definition of the length L1 of the pair of first seal portions 16 will be described.

First, the bisector 19 will be described.
First, the width W of the spout portion 15 will be described with reference to FIG. In this Embodiment, the width W of the spout part 15 means the width | variety of the spout part 15 in the part in which the scheduled opening part 18 is formed.
More specifically, first, a line connecting a point where the opening scheduled portion 18 and the inner edge of one spout portion seal 15a intersect with a point where the planned opening portion 18 and the inner edge of the other spout portion seal 15a intersect. A minute 18b is drawn, and the midpoint 18c of this line segment is recognized. When the line segment 18b has a significant width, the midpoint 18c is defined as the midpoint of the center line extending the center position in the width direction.
Next, a line segment that passes through the midpoint 18c and that connects the one spout port seal 15a and the other spout port seal 15a with the shortest distance is drawn. In FIG. 2, a line segment indicated as an arrow with a symbol W corresponds to this. The length of this line segment, that is, the length of the arrow marked with the symbol W in FIG. 2 is the width W of the spout portion 15 in the present embodiment.
Next, a straight line is drawn that passes through the midpoint 18c and extends in a direction orthogonal to the arrow labeled W. This straight line is a bisector 19 that bisects the spout 15 along the dispensing direction. The liquid dispensing direction is substantially parallel to the direction in which the bisector 19 defined as described above extends. Further, the pair of spout part seals 15 a of the spout part 15 are opposed to each other with the bisector 19 as a boundary.

  In the present embodiment, the length L <b> 1 of the pair of first seal portions 16 is defined as the dimension of the pair of inner edges 16 a and 16 b of the pair of first seal portions 16 in the direction along the bisector 19. Specifically, as shown in FIG. 2, first, a straight line B1 connecting the ends of the pair of inner edges 16a and 16b on the main body part 14 side is drawn, and then an intersection 16c between the bisector 19 and the straight line B1 is drawn. Authorize. The length L1 of the pair of first seal portions 16 is a distance between the midpoint 18c of the planned opening portion 18 and the intersection 16c described above.

  In addition, as a result of repeated extensive experiments by the present inventors, the flow path of the spout portion 15 once closed by bending or the like can be easily restored as supported by the embodiments described later. Has found that it is effective to set the angle α formed by the pair of inner edges of the pair of first seal portions 16 to 30 ° or more.

(the film)
Next, an example of the layer configuration of the front film 11, the back film 12, and the bottom film 13 will be described with reference to FIG. As shown in FIG. 6, the films 11, 12, and 13 include a base material layer 41 and a thermoplastic resin layer 42 provided on the base material layer 41. In the example shown in FIG. 6, the base material layer 41 constitutes the outer surfaces 11 x, 12 x, 13 x of the films 11, 12, 13, and the thermoplastic resin layer 42 constitutes the inner surfaces of the films 11, 12, 13. 11y, 12y, and 13y are configured. The base material layer 41 may be printed with a pattern or the like.

  As a material constituting the base material layer 41, for example, PET or nylon can be used. The substrate layer 41 can ensure high printability on the outer surfaces 11x, 12x, and 13x. Moreover, the base material layer 41 has high heat resistance at the time of heat welding. As a material constituting the thermoplastic resin layer 42, for example, polyethylene or polypropylene can be used. The thickness of the films 11, 12, 13 is in the range of 80 to 200 μm, for example.

  Although not shown, the films 11, 12, and 13 may further include an intermediate layer disposed between the base material layer 41 and the thermoplastic resin layer 42. As the intermediate layer, an appropriate one can be selected according to required performance such as water vapor and other gas barrier properties, light shielding properties, various mechanical strengths, and the like. For example, a metal layer, a vapor deposition layer of metal or metal oxide, or the like can be provided as the intermediate layer. By providing such an intermediate layer, oxygen and water vapor can be prevented from entering the bag 1. A stretched nylon film may be provided as the intermediate layer. In this case, the puncture resistance of the bag 10 can be improved.

  In addition, it cannot be overemphasized that the layer structure of the surface film 11, the back film 12, and the bottom film 13 is not limited to what was mentioned above.

  Next, the operation and effect of the present embodiment having such a configuration will be described. Here, first, a method for manufacturing the bag 10 will be described. Next, the effect of the bag 10 obtained when the liquid is poured out will be described.

Bag Manufacturing Method FIGS. 7A, 7B and 7C are diagrams showing an example of a method for manufacturing the bag 10 according to the embodiment of the present invention. First, as shown in FIG. 7A, the front film 11 and the back film 12 are opposed to each other, and the folded bottom film 13 is inserted between the front film 11 and the back film 12. At this time, the front film 11, the back film 12, and the bottom film 13 are arranged such that the respective inner surfaces 11 y, 12 y, 13 y formed of the thermoplastic resin layer 42 are in contact with each other.

  Next, the edges of the films 11, 12, and 13 are heat-welded except for the portion that becomes the liquid filling port. As a result, as shown in FIG. 7B, the side seal 22a and the bottom seal 23a can be formed. Moreover, the part used as the spout part seal | sticker 15a of the spout part 15 among the films 11 and 12 is heat-welded. At this time, thermal welding is performed so that the above-described conditions of length L1 ≦ 9 mm, angle α ≧ 30 °, and angle α <angle β are satisfied.

  Next, the intermediate product shown in FIG. 7B is punched out along the outer shape of the bag 10 to be produced. Thus, a pair of spout portion seals 15 a including a pair of first seal portions 16 and a pair of second seal portions 17 can be formed. In this way, as shown in FIG. 7C, the bag 10 having the opening 21b formed in the upper portion 21 can be produced.

  Then, the liquid is filled into the accommodating portion 14s of the main body portion 14 through the opening 21b, and then the upper portion 21 is thermally welded along the upper seal planned portion 21a. Thereby, the bag 10 in which the liquid is sealed can be obtained.

  According to the present embodiment, as described above, the pair of spout portion seals 15 a includes the pair of first seal portions 16 that extend from the scheduled opening portion 18 toward the main body portion 14 and the pair of first seal portions 16. And a pair of second seal portions 17 located between the main body portion 14 and the main body portion 14. The pair of first seal portions 16 and the pair of second seal portions 17 have a length L1 of the first seal portion 16 in the direction along the bisector 19 and one inner edge of the pair of first seal portions 16 When the angle formed by 16a and the other inner edge 16b is α and the angle formed by one inner edge 17a of the pair of second seal portions 17 and the other inner edge 17b is β, the length L1 ≦ 9 mm and the angle α ≧ It is configured so that 30 ° and angle α <angle β are satisfied. Further, the pair of second seal portions 17 are configured to partially enter the inside of the bottle 30 when the liquid is refilled into the bottle 30. In this case, the first seal portion 16 plays a role of sufficiently ensuring the insertion property of the spout portion 15 of the bag 10 into the mouth portion 31 of the bottle 30 while preventing the spout portion 15 from being blocked. it can. In addition, the second seal portion 17 appropriately controls the flow rate of the liquid flowing into the flow path between the pair of first seal portions 16 when the liquid is refilled into the bottle 30, and the spout portion 15 of the bag 10 It can play the role of maintaining stably the state inserted in the mouth part 31 of the bottle 30. For this reason, according to the present invention, the operation of refilling the liquid into the bottle 30 can be easily performed in a short time while preventing the spout portion 15 from being blocked. Moreover, according to this Embodiment, since it is not necessary to insert auxiliary members, such as a pipe, in the inside of the spout part 15, the cross-sectional area of the flow path of the spout part 15 can be ensured widely. For this reason, it is possible to shorten the time required for dispensing the liquid. Moreover, since the process of inserting auxiliary members, such as a pipe, between the surface film 11 and the back surface film 12 is unnecessary, the man-hour required for manufacture of the bag 10 can be reduced.

  Further, according to the present embodiment, by setting the angle α formed by one inner edge 16a and the other inner edge 16b of the pair of first seal portions 16 to 30 ° or more, the flow path of the spout portion 15 is bent or the like. Even if it is once blocked by the above, the flow path of the spout port 15 can be restored from the closed state by pressing the main body 14 of the bag 10 or the like.

  In addition, according to the present embodiment, the surface film 11 is poured out when the liquid is poured out by setting the angle β formed by one inner edge 17a and the other inner edge 17b of the pair of second seal portions 17 to 110 ° or less. And the back film 12 can be sufficiently secured. For this reason, the part which spreads in the funnel shape can be formed in the spout part 15 of the bag 10 inserted in the bottle 30. Thereby, the state in which the spout part 15 of the bag 10 is inserted into the mouth part 31 of the bottle 30 can be stably maintained.

Modifications Various modifications can be made to the above-described embodiment. Hereinafter, an example of modification will be described with reference to the drawings. In the following description and the drawings used in the following description, the same reference numerals as those used for the corresponding parts in the above embodiment are used for the parts that can be configured in the same manner as in the above embodiment. A duplicate description is omitted.

  In the above-described embodiment, the example in which the main body portion 14 is configured by a plurality of films has been described. However, as long as it has the accommodating part 14s for accommodating a liquid, the specific shape, structure, and manufacturing method of the main-body part 14 are not specifically limited. For example, the main body 14 may be configured from a single film.

  Moreover, in this Embodiment mentioned above, the example in which the surface film 11 and the back surface film 12 were utilized ranging over both the main-body part 14 and the spout part 15 was shown. However, the present invention is not limited to this, and a film separate from the film constituting the main body portion 14 may be used as the film constituting the spout portion 15.

  Moreover, although not shown in figure, in order to improve the shape retention property of the spout part 15, embossing etc. are carried out to the surface film 11 and the back film 12 which comprise the main-body part 14 of the part near the spout part 15 or the spout part 15 It may be given.

  Further, in the present embodiment described above, the notch of the scheduled opening portion 18 of the spout portion 15 provided between the upper portion 21 and the side portion 22 is the end on the upper portion 21 side of the end portion of the scheduled opening portion 18. The example provided in the section is shown. However, the present invention is not limited to this, and as shown in FIG. 12, the notch of the scheduled opening portion 18 of the spout portion 15 is provided at the end of the scheduled opening portion 18 on the side 22 side. May be. Although not shown, the notch of the scheduled opening portion 18 of the spout portion 15 may be provided on both the end portion on the upper portion 21 side and the end portion on the side portion 22 side of the scheduled opening portion 18.

  In the above-described embodiment, an example in which the spout portion 15 including the spout portion seal 15a extends to a position above the upper portion 21 has been described. However, the present invention is not limited to this, and as shown in FIG. 13, the spout portion 15 including the spout portion seal 15 a may be configured not to reach a position above the upper portion 21. . Or the front-end | tip of the spout part 15 may be comprised in the same position as the upper part 21. FIG. In the example shown in FIG. 13, an angle α (see FIG. 3) formed by one inner edge of the pair of first seal portions 16 and the other inner edge is 42.0 °, and one of the pair of second seal portions 17 The angle β (see FIG. 3) formed by the inner edge of the other and the other inner edge is 80.6 °. Moreover, the length L1 (refer FIG. 2) of a pair of 1st seal | sticker part 16 is 6.4 mm, and the width W (refer FIG. 2) of the spout part 15 is 15.2 mm. In the above-described embodiment, an example in which the easy opening line 18a such as a half-cut line has an arc shape has been shown. However, the present invention is not limited to this, and as shown in FIG. 18a may have a linear shape.

  In addition, although some modified examples with respect to the above-described embodiment have been described, naturally, a plurality of modified examples can be applied in combination as appropriate.

  EXAMPLES Next, although an Example demonstrates this invention further more concretely, this invention is not limited to description of a following example, unless the summary is exceeded.

Example 1
The length L1 of the pair of first seal portions 16 was changed in various ways, and the insertability of the bag 10 into the bottle 30 and the liquid pouring property from the bag 10 were evaluated. At this time, the width W of the spout portion 15 was set to 15.5 mm. In addition, an angle α formed by one inner edge 16a of the pair of first seal portions 16 and the other inner edge 16b is set to 42 °, and one inner edge 17a and the other inner edge 17b of the pair of second seal portions 17 are The formed angle β was set to 100.4 °. For reference, two types of spout parts 15 including a pair of first seal parts 16 having different lengths L1 are shown in FIG. In FIG. 8, the spout part 15 provided with a pair of 1st seal | sticker parts 16 which has the predetermined length L1 is shown as the continuous line, and a pair which has length L1 larger than the spout part 15 shown as a continuous line The spout part 15 provided with the first seal part 16 is indicated by a two-dot chain line.

  As the front film 11 and the back film 12 constituting the bag 10, a film having a thickness of 0.153 mm in which a stretched nylon film, a polyester film, and a linear low density polyethylene were sequentially laminated from the outer surface side was used. As the bottle 30, a bottle 30 having an inner diameter of 25 mm was used. The width of the pair of first seal portions 16 in the planned opening portion 18 was about 8 mm on the inner edge 16a side and about 3 mm on the inner edge 16b side. As the liquid, a conditioner manufactured by Unilever Japan having a viscosity coefficient of 15.4 Pa · s was used.

  Table 1 shows the evaluation results of insertability and extractability when the length L1 is changed in 1 mm increments between 3 mm and 13 mm. Regarding the insertability, the length in the direction along the bisector 19 of the outer edges of the pair of first seal portions 16 that have entered the bottle 30 beyond the end portion 32 of the mouth portion 31 of the bottle 30 is determined. The case where it was 5 mm or more was marked with ◯, and the case where it was less than 5 mm was marked with ×. Further, regarding the pouring property, even when the main body portion 14 of the bag 10 is pressed with a pressing force of 20 N at the maximum, the case where the liquid in the spout portion 15 does not finally flow is x, The case where all the liquid was able to be taken out from the bag by pressing the main body portion 14 of the bag 10 with the following pressing force was evaluated as ◯.

Moreover, the resilience of the spout part 15 of the bag 10 when the length L1 was changed in increments of 1 mm between 3 mm and 13 mm was evaluated. Hereinafter, a method for evaluating the restoration property will be described.
First, the bag 10 filled with the liquid is crushed in the region denoted by reference numeral C1 shown in FIG. 10, so that the inner surface 11y of the front film 11 and the inner surface 12y of the back film 12 are in contact with each other in the region C1. did. As shown in FIG. 10, the region C <b> 1 includes a pair of inner edges of the pair of second seal portions 17 from a straight line B <b> 1 connecting the ends of the pair of inner edges 16 a and 16 b on the main body portion 14 side of the pair of first seal portions 16. This is a region extending to a straight line B2 connecting the ends of the main body 14 side of 17a and 17b. Next, the spout part 15 was bent at an arbitrary position in a region sandwiched between the straight lines B1 and B2. In this way, the flow path from the main body portion 14 to the scheduled opening portion 18 of the spout portion 15 was once blocked. FIG. 11A shows a photograph of the bag 10 in a state where the flow path is closed, taken from the side portion 22 side as a reference.
Next, whether or not a liquid flows in between the inner surface 11y of the front film 11 and the inner surface 12y of the back film 12 in a region sandwiched between the straight lines B1 and B2 by pressing the main body portion 14 of the bag 10. It was confirmed. That is, it was evaluated whether or not the flow path from the main body portion 14 to the planned opening portion 18 of the spout portion 15 was restored. Even when the main body portion 14 of the bag 10 is pressed with a pressing force of 20 N at the maximum, the case where the flow path is not restored is defined as a restoring property X, and the main body portion 14 of the bag 10 is pressed with a pressing force of 15 N or less. A case where the flow path was restored by pressing was designated as restoration property (circle). By pressing the main body 14, the spout portion 15 swells, and as a result, a photograph taken from the side 22 side of the bag 10 in a state where the flow path of the spout portion 15 is restored is shown in FIG. Shown in b). In addition, Table 1 shows the evaluation results of the recoverability together with the evaluation results of the insertability and the extractability.

(Example 2)
Except that the width W of the spout portion 15 is set to 16.8 mm, and the angle α formed by one inner edge 16a and the other inner edge 16b of the pair of first seal portions 16 is set to 35 °. In the same manner as in the case of Example 1, the length L1 of the pair of first seal portions 16 was changed in various ways, and the insertability of the bag 10 into the bottle 30 and the liquid pouring property from the bag 10 were evaluated. . Table 2 shows the evaluation results of the insertability and the extractability when the length L1 is changed in increments of 1 mm between 3 mm and 11 mm.

  Further, the resilience of the spout 15 of the bag 10 was evaluated in the same manner as in Example 1 described above. Table 2 shows the evaluation results of the recoverability together with the evaluation results of the insertability and the extractability.

  As in Examples 1 and 2, when the length L1 of the pair of first seal portions 16 was 9 mm or less, the spout portion 15 could be prevented from being blocked. In addition, in order to obtain a sufficient insertion feeling of the spout portion 15 of the bag 10 to be the bottle 30, it can be said that the length L1 of the pair of first seal portions 16 is preferably 6 mm or more.

  As in Examples 1 and 2, when the angle α formed by one inner edge 16a and the other inner edge 16b of the pair of first seal portions 16 is 42 ° or 35 °, by pressing the main body portion 14 of the bag 10 The flow path of the spout 15 was able to be restored from the blocked state.

(Example 3)
The angle α formed by one inner edge 16a and the other inner edge 16b of the pair of first seal portions 16 is changed variously to evaluate the insertability of the bag 10 into the bottle 30 and the liquid pouring property from the bag 10. did. At this time, the width W of the spout portion 15 was set to 15.5 mm. The length L1 of the pair of first seal portions 16 was set to 9 mm, and the angle β formed by one inner edge 17a and the other inner edge 17b of the pair of second seal portions 17 was set to 100.4 °. Other conditions are the same as in the first embodiment. For reference, two types of spout portions 15 including a pair of first seal portions 16 having different angles α are shown in FIG. In FIG. 9, a spout portion 15 including a pair of first seal portions 16 having a predetermined angle α is shown by a solid line, and a pair of first spouts having an angle α smaller than the spout portion 15 shown by a solid line. A spout part 15 having one seal part 16 is indicated by a two-dot chain line.

  Table 3 shows the evaluation results of insertability and extractability when the angle α is changed between 25 ° and 65 °.

  Moreover, the angle (alpha) was changed between 25 degrees-65 degrees, and the restoring property of the spout part 15 of the bag 10 was evaluated. Table 3 shows the evaluation results of the recoverability together with the evaluation results of the insertability and the extractability.

Example 4
Except that the width W of the spout portion 15 is set to 16.8 mm, the inner edge 16a and the other inner edge 16b of the pair of first seal portions 16 are the same as in the case of Example 3 described above. The angle α formed by the sack was changed in various ways, and the insertability of the bag 10 into the bottle 30 and the liquid pouring property from the bag 10 were evaluated. Table 4 shows the evaluation results of insertability and extractability when the angle α is changed between 0 ° and 36 °.

  Moreover, the angle (alpha) was changed between 0 degrees-36 degrees, and the restoring property of the spout part 15 of the bag 10 was evaluated. Table 4 shows the evaluation results of the recoverability together with the evaluation results of the insertability and the extractability.

(Example 5)
Except that the length L1 of the pair of first seal portions 16 is set to 7 mm, one inner edge 16a and the other inner edge of the pair of first seal portions 16 are the same as in the case of Example 4 described above. The angle α formed by 16b was changed in various ways, and the insertability of the bag 10 into the bottle 30 and the liquid pouring property from the bag 10 were evaluated. Table 5 shows the evaluation results of insertability and extractability when the angle α is changed between −10 ° and 57 °.

  Moreover, the angle (alpha) was changed between -10 degrees-57 degrees, and the restoring property of the spout part 15 of the bag 10 was evaluated. Table 5 shows the evaluation results of the recoverability together with the evaluation results of the insertability and the extractability.

  As in Examples 3 to 5, when the angle α formed by one inner edge 16a of the pair of first seal portions 16 and the other inner edge 16b is 30 ° or more, the spout portion 15 is prevented from being blocked. did it. Further, in order to obtain a sufficient insertion feeling of the spout 15 of the bag 10 to be the bottle 30, it can be said that the angle α is preferably 40 ° or less.

  As in Examples 3 to 5, when the angle α formed by one inner edge 16a of the pair of first seal portions 16 and the other inner edge 16b is 30 ° or more, by pressing the main body portion 14 of the bag 10, The flow path of the spout 15 was able to be restored from the blocked state.

(Example 6)
Conditions for changing the angle β formed by one inner edge 17a and the other inner edge 17b of the pair of second seal portions 17 to widen the flow path between the pair of second seal portions 17 in a funnel shape. Explored. At this time, the width W of the spout portion 15 was set to 15.5 mm. Further, the angle α formed by one inner edge 16a and the other inner edge 16b of the pair of first seal portions 16 was set to 42 °, and the length L1 of the pair of first seal portions 16 was set to 9 mm.

  When the angle β is 117.0 °, 100.4 °, 80.2 °, 62.1 °, 42.1 ° or 19.1 °, the angle β is 100.4 ° or 80.2 ° In addition, a portion extending in a funnel shape was formed in the spout portion 15 inserted into the mouth portion 31 of the bottle 30.

(Example 7)
The width W of the spout portion 15 is set to 16.8 mm, the angle α formed by one inner edge 16a and the other inner edge 16b of the pair of first seal portions 16 is set to 35 °, and the pair of first seal portions Except that the length L1 of 16 is set to 7 mm, the angle β formed by one inner edge 17a and the other inner edge 17b of the pair of second seal portions 17 is set in the same manner as in the first embodiment. Various conditions were changed to search for conditions for spreading the flow path between the pair of second seal portions 17 like a funnel. As a result, when the angle β was 100.4 °, 80.2 °, or 62.1 °, a portion extending in a funnel shape was formed in the spout portion 15 inserted into the mouth portion 31 of the bottle 30.

  As in Examples 6 and 7, in order to form a funnel-shaped portion in the spout portion 15 inserted into the mouth portion 31 of the bottle 30, one of the pair of second seal portions 17 is formed. It can be said that the angle β formed by the inner edge 17a and the other inner edge 17b is preferably 110 ° or less, more preferably 100 ° or less.

DESCRIPTION OF SYMBOLS 10 Bag 11 Surface film 11x Outer surface 11y Inner surface 12 Back surface film 12x Outer surface 12y Inner surface 14 Main-body part 14s Storage part 15 Outlet part 15a Outlet part seal 16 1st seal part 17 2nd seal part 18 Opening planned part 18a Easy opening line 19 Divided line 21 Upper part 21a Upper seal planned part 30 Bottle 31 Mouth part 32 End part 41 Base material layer 42 Thermoplastic resin layer

Claims (3)

A refill bag containing liquid to be refilled into a bottle,
A main body formed with an accommodating portion for accommodating a liquid;
A spout connected to the main body and through which the liquid passes when refilling the liquid into a bottle;
The spout part is a pair of opposing openings, with a scheduled opening part serving as a spout from which liquid is poured out by being opened, and a bisector that bisects the spout part along the pour direction. And a spout part seal of
The pair of spout portion seals includes a pair of first seal portions extending from the planned opening portion toward the main body portion, and a pair of second seals positioned between the pair of first seal portions and the main body portion. A seal portion,
The length of the first seal portion in the direction along the bisector is L1, the angle formed by one inner edge and the other inner edge of the pair of first seal portions is α, and the pair of second seals When the angle formed by one inner edge and the other inner edge of the seal portion is β, the length L1 ≦ 9 mm, the angle α ≧ 30 °, and the angle α <angle β are established,
The pair of second seal portions is a refill bag configured to partially enter the inside of the bottle when the liquid is refilled into the bottle. The spout part is located between the upper part and the side part of the main body part,
The refill bag according to claim 1, wherein the angle β is 110 ° or less.   The refill bag according to claim 1 or 2, wherein the length L1 is 5 mm or more.