JP2019043568A - Fluid discharge device and packaging bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fluid discharge tool capable of easily and surely discharging a fluid contained in a packaging bag and reducing a residual amount of the fluid. SOLUTION: This is a fluid discharge tool including a packaging bag 1 of a standing pouch, a female connector 2 provided at an edge of the packaging bag 1, and a fluid discharge member 3 connected to the female connector 2. The lower end of the female connector 2 is located above the maximum height position a of the folded-back of the bottom member 12 of the packaging bag 1, and the wall surface members 11 and 11 of the packaging bag 1 are deformed when the packaging bag 1 is deformed. The lowest point b of the fluid blockage line L generated below the female connector 2 due to the close contact with each other is below the height position 10 mm above the maximum folding height position a of the bottom member 12 of the packaging bag 1. The diameter t and the length C of the female connector 2 are formed so as to be located at. [Selection diagram] FIG. 5

Description

  The present invention relates to a fluid discharger that discharges a fluid contained in a flexible packaging bag by a discharge member.

  Heretofore, plastic packaging containers having rigidity have generally been used in products dealing with various fluids such as cosmetics, shampoos, soaps and perms. And from the environmental point of view to the earth, even after all the fluid is discharged from the plastic packaging container, the plastic packaging container is maintained without discarding, and it is used as a flexible packaging bag for refilling. It has been practiced to refill the fluid contained in plastic packaging containers.

  However, in this case, since the fluid comes in contact with air at the time of refilling and after refilling of the fluid, there is a possibility that the fluid may be deteriorated. In addition, if plastic packaging containers are used for a long time, the appearance of the packaging containers will be gradually impaired, because the fluid adheres to the packaging containers, molds build up, wear and so on, It was not always a pleasant thing.

  Therefore, in recent years, flexible packaging bags have not been used for refilling, but for use as main bodies of goods. Specifically, the packaging bag comprises a pair of opposed front and back wall members and a bottom member provided at the lower edge of the wall member, and is provided in a fluid containing portion surrounded by the wall member and the bottom member. A flexible standing pouch in which the fluid of And the connector provided in the aspect which protrudes in the fluid accommodating part in the edge of a packaging bag, and the discharge member connected with a connector are provided. According to this, since the fluid does not touch the air at all or hardly, it is possible to prevent the deterioration of the fluid. In addition, after all the fluid is discharged from the packaging bag, it may be replaced with a new packaging bag, so that it is always possible to maintain a new and clean state.

  However, for example, in the case of the flexible packaging bag 1 shown in FIG. 10A, in the process of discharging the fluid contained in the packaging bag 1 by the discharge member, air does not enter inside the packaging bag. Then, as shown in FIGS. 10 (b) to 10 (d), the wall members 11, 11 on the front and back sides approach each other, and the bottom member 12 is folded inward along the width direction toward the fluid discharge portion 13. 10 (e), finally a part of the wall surfaces 11 below the discharge member 2 comes in close contact with each other to close the passage line of the fluid. As a result, there has been a problem that fluid remains in the inside (especially the bottom) of the packaging bag 1.

  Therefore, it has been conventionally proposed to provide a box-like container for holding a flexible packaging bag, and to devise a structure in which the wall surfaces of the packaging bag are deformed while inhibiting their close contact with each other (Patent Document 1) , 2). However, in this case, the box-like container had to be used continuously, and eventually the box-like container became dirty and its appearance was lost.

  On the other hand, in the field of food, flexible packaging bags are widely used, and in order to solve the problem of blocking the passage of fluid in the packaging bags, not only the tip of the plug or spout, Various devices have been attempted by forming a plurality of suction ports also in the body portion (see Patent Documents 3 to 6). However, since all these structures are structures which suck in fluid with a person's mouth, compressing a packaging bag with a human hand, a fluid discharges without entering air in the inside of a packaging bag by discharge member. It was difficult to apply to the structure.

  Naturally, it is also conceivable to form the connector long so that the lower end of the connector is located near the bottom member inside the packaging bag, but with this, the volume of the fluid decreases by the length of the connector, There is a problem that the material cost of the connector is increased. Moreover, even if the amount of fluid remaining near the bottom of the packaging bag can be reduced, there is a risk that fluid may remain around the top of the packaging bag depending on the use mode.

JP, 2013-209098, A JP-A-5-77844 Japanese Utility Model Publication No. 63-76653 JP, 2008-143534, A JP, 2008-308193, A Patent No. 4921944 gazette

  The present invention has been made in view of the above technical background, and can discharge fluid contained in a packaging bag simply and reliably, and can reduce the amount of remaining fluid. It aims at providing a tool.

  As a result of various repeated experiments on residual fluid quantity for packaging bags and connectors of various sizes, the applicants have found that the position of the fluid closing line generated in the packaging bag affects the residual fluid quantity. It discovers and invents the position of the closure line of the fluid in which part of the packaging bag the residual volume of the fluid is reduced to an acceptable range, and the position of the closure line is defined by the diameter of the connector It came to invent.

  That is, in order to achieve the above object, the present invention comprises a pair of opposed front and back wall members and a bottom member provided at the lower edge of the wall member, and is surrounded by the wall member and the bottom member. A flexible packaging bag in which a predetermined fluid is stored in the fluid storage section, a connector provided in such a manner as to project to the fluid storage section at an edge of the packaging bag, and a discharge member connected to the connector And In the process of suctioning and discharging the fluid stored in the fluid storage unit by the discharge member, the wall surface members of the packaging bag approach each other, and the bottom surface member is folded back toward the fluid storage unit. It is a fluid discharger in which the packaging bag is deformed while being separated. The lower end portion of the connector is positioned above the maximum height position of the folding back of the bottom surface member of the packaging bag, and the wall surface members of the packaging bag are in close contact with each other when the packaging bag is deformed The diameter and length of the connector so that the lowest point of the fluid closing line generated below the connector is located lower than the height position 10 mm above the maximum height position of the fold of the bottom member of the packaging bag Is formed.

  According to this, in the fluid containing portion of the packaging bag, a fluid closing line does not or does not easily occur below the connector, so the fluid passage is secured below the connector and accommodated in the packaging bag Fluid can be discharged easily and reliably.

  In the connector, the lowermost point of the fluid closing line generated below the connector by the close contact between the wall members of the packaging bag is positioned below the maximum height position of the fold of the bottom member of the packaging bag. Preferably, the diameter and length of the connector are formed.

  Also, the position of the closure line of the fluid may be expressed by the following equation.

O = t / 2 ÷ tan (θ / 2)
O: Expected position of occlusion line (distance from lower end of connector to lowest point of occlusion line of fluid)
t: Maximum diameter in the thickness direction (perpendicular to the wall surface member) of the packaging bag of the connector in the fluid storage portion θ: Angle connecting the lowest point of the fluid closing line and both sides of the maximum diameter of the connector

  Further, the connector is provided such that a plug is engageable at the lower end portion, the plug is positioned above the maximum height position of the fold of the bottom member of the packaging bag, and the position of the fluid closing line is It may be expressed by the following formula.

O = t / 2 ÷ tan (θ / 2)
O: Expected position of the occlusion line (distance from the lower end of the connector to the lowest point of the occlusion line of fluid)
t: The maximum diameter in the thickness direction (the direction perpendicular to the wall member) of the packaging bag of the connector (including the plug) in the fluid storage portion θ: Both the lowest point of the fluid closing line and the maximum diameter of the connector Angle connecting parts

  Further, an angle θ connecting the lowermost point of the fluid closing line and both side portions c and c of the maximum diameter t of the connector is preferably 18 degrees to 20 degrees.

  Further, when a part of the connector is present on a line segment connecting the lowest point of the fluid closing line and both sides c and c of the maximum diameter of the connector, the connector The next largest diameter t is preferably selected so that there is no part.

  In addition, the packaging bag according to the present invention is characterized in that it is used for the above-mentioned fluid discharger.

  According to the present invention, a fluid closing line is not generated or extremely unlikely to occur under the connector in the fluid containing portion of the packaging bag, so a fluid passage is secured under the connector and accommodated in the packaging bag Fluid can be discharged simply and reliably, which in turn can reduce the amount of fluid remaining.

  Therefore, since it becomes possible to use a flexible packaging bag in products dealing with various fluids such as cosmetics, shampoos, soaps, perms, etc., the fluid does not touch the air at all, so the fluid is deteriorated. Can be prevented. In addition, after all the fluid is discharged from the packaging bag, it may be replaced with a new packaging bag, so that it is always possible to maintain a new and clean state.

It is a perspective view of the fluid discharge tool concerning a 1st embodiment. It is a perspective view of the packaging bag of FIG. It is front sectional drawing of the packaging bag of FIG. It is side surface sectional drawing of the packaging bag of FIG. It is front sectional drawing of the packaging bag of FIG. 1, and side sectional drawing which shows the discharge process of the fluid. It is front sectional drawing of the packaging bag of the fluid discharge tool which concerns on 2nd Embodiment, and side sectional drawing which shows the discharge process of a fluid. It is side surface sectional drawing which shows the modification of the packaging bag of the fluid discharge tool which concerns on 2nd Embodiment. It is a graph which shows the result of verification experiment of a fluid discharge tool. It is a graph which shows probability distribution based on the verification result of FIG. It is front sectional drawing of the packaging bag of the conventional fluid discharge tool, and side sectional drawing which shows the discharge process of a fluid.

First Embodiment
Next, a first embodiment of a fluid discharger according to the present invention will be described with reference to FIGS. In FIGS. 1 to 5, the upper side, both sides, and the lower side of the drawings are the upper side, both sides, and the lower side of the fluid discharge device.

  The fluid discharger, as shown in FIG. 1, includes a flexible packaging bag 1 in which a fluid is contained, a synthetic resin female connector 2 provided on the upper edge 11a of the packaging bag 1, and And a discharge member 3 made of synthetic resin connected to the female connector 2. As the fluid, various fluids can be applied, such as cosmetics, shampoos, soaps, perms and the like from low viscosity to high viscosity.

  As shown in FIGS. 2 to 4, the packaging bag 1 comprises a pair of opposing front and back wall surfaces 11, 11 and a bottom surface member 12 provided at the lower edge 11 c of the bottom of the wall surface 11, 11. , So-called standing pouch. In the packaging bag 1, the upper edges 11a of the wall members 11, 11 are heat-sealed with each other except for the female connector 2, and both side edges 11b of the wall-members 11, 11 are heat-sealed with each other. The lower side edge 11c of the members 11 and 11 and the peripheral edge of the bottom member 12 are heat-sealed to form the fluid containing portion 13 with a space surrounded by the wall members 11 and 11 and the bottom member 12.

  The wall members 11 and the bottom member 12 are made of a flexible synthetic resin sheet material, and a sealant layer is formed on at least one side. The configurations and thicknesses of the wall surface members 11 and the bottom surface member 12 are not particularly limited, and a design having an oxygen barrier property, a water vapor barrier property, and the like can be appropriately made according to the properties of the fluid to be accommodated.

  Before the fluid is stored in the fluid storage portion 13, the front and back wall members 11, 11 are in contact with each other except for the portion where the female connector 2 is present, and the bottom member 12 is fluid It is in a state of being folded back inward along the width direction toward the accommodation portion 13, and a so-called weir portion is configured.

  Further, when fluid is filled in the fluid containing portion 13 of the packaging bag 1 without air, as shown in FIG. 2, the wall members 11, 11 on the front and back sides expand while being separated from each other in the thickness direction, The bottom member 12 bulges downward, and is formed to be inclined while gradually curving gradually downward from the side edge 11b toward the central part.

  In addition, as shown to Fig.5 (a), when the fluid accommodating part 13 of the packaging bag 1 is completely filled with the fluid, the distance from the upper edge 11a of the wall surface member 11 to the lowest point d of the bottom surface member 12 (The maximum height of the fluid storage portion 13) is H. Further, the height from the maximum height position a of the bottom of the bottom member 12 to the lowest point d of the bottom member 12 (the maximum height of the bottom of the bottom member 12) is D.

  As shown in FIGS. 2 to 4, the female connector 2 is heat sealed in such a manner that the upper portion thereof is sandwiched by the central portions of the upper edge portions 11 a of the wall members 11 of the packaging bag 1. The housing portion 13 is provided in such a manner as to project downward toward the bottom surface member 12 and, as shown in FIG. 5A, the lower end portion protrudes from the upper edge 11a of the wall surface member 11 at a height C. , And is located above the maximum height position a of the folded back of the bottom member 12 of the packaging bag 1.

  Further, the female connector 2 internally has a conduction passage 21a of both end openings extending in the axial direction, and a male connector 32 described later of the discharge member 3 is inserted from the base end opening 21b, After the male connector 32 is completely inserted through 21a, the male connector 32 of the discharge member 3 is projected from the lower end opening 21c.

  The optimum diameter and length (position of the lower end) of the female connector 2 will be described in detail later.

  As shown in FIG. 1, the discharge member 3 includes a pump portion 31 as a main body and a male connector 32 provided at a lower portion of the pump portion 31.

  The pump unit 31 is a known pump mechanism including an upper pump unit 31a and a lower pump unit 31b, and the pump unit is operated by performing an upper and lower piston operation on the lower pump unit 31b with respect to the upper pump unit 31a. The fluid is sucked using the principle that the inside of 31 becomes a vacuum.

  The upper end portion of the male connector 32 is fixed to the lower portion of the lower pump portion 31 b and is formed to extend in the axial direction of the pump portion 31. The lower end portion of the male connector 32 protrudes from the lower end opening 21 c and has a length arranged at a predetermined position in the fluid storage portion 13 of the packaging bag 1.

  Further, the male connector 32 is formed in a cylindrical shape in accordance with the inner surface shape of the conduction path 21 a of the female connector 2, and when coupled with the female connector 2, at least at least the conduction path 21 a of the female connector 2. It is in close contact with a part and maintains the air tightness of the fluid containing portion 13 of the packaging bag 1.

  The male connector 32 has a plurality of suction ports 32a at its tip end, and a flow passage (not shown) extending in the axial direction inside.

  Next, the design of the optimal length and diameter of the female connector 2 in the fluid discharger will be specifically described.

  First, when the upper pump portion 31a is piston-operated in the pump portion 31 with respect to the lower pump portion 31b, the fluid stored in the fluid storage portion 13 of the packaging bag 1 is sucked from the suction port 32a of the male connector 32. After passing through the flow passage of the male connector 32, the fluid is discharged from the discharge port 31c of the pump unit 31 to the outside.

  As described above, when the fluid is discharged from the fluid storage portion 13 of the packaging bag 1 by the discharge member 3, air does not enter inside the fluid storage portion 13 of the packaging bag 1. b) As shown in (d), while the wall members 11, 11 on the front and back sides approach each other, the bottom member 12 is deformed while being folded back inward along the width direction toward the fluid containing portion 13 Finally, as shown in FIG. 10 (e), a part of the wall members 11, 11 is brought into close contact with each other below the discharge member 3 to generate a closing line L for closing the passage of fluid, There is a problem that the fluid remains in the inside (in particular, the bottom) of the fluid containing portion 13 of the packaging bag 1.

  However, in the case of the fluid discharger according to the present embodiment, the lowermost point b of the closure line L of the fluid is positioned lower than 10 mm above the maximum height position a of the bottom surface member 12 of the packaging bag 1. As shown in 5 (b) to (d), the wall members 11 do not contact each other at least at the lowermost point b of the closing line L until the final state shown in FIG. Since it becomes difficult to close, the passage of fluid can be secured under the female connector 2, and the fluid contained in the flexible packaging bag 1 can be discharged easily and reliably.

  And about the position of this closure line L, it is assumed by the maximum diameter and length (position of a lower end part) of female connector 2, and, specifically, it is denoted by a lower type.

O = t / 2 ÷ tan (θ / 2)
O: Assumed position of occlusion line L (distance from lower end of female connector 2 to lowest point b of occlusion line L of fluid)
t: Maximum diameter in the thickness direction (direction perpendicular to the wall surface member 11) of the packaging bag 1 of the female connector 2 in the fluid storage portion 13: Bottom point b of the fluid closing line L and maximum diameter of the female connector 2 Angle that connects both sides c, c of t

  Further, an angle connecting the lowermost point b of the closing line L and the side portions c, c of the maximum diameter t of the female connector 2 is in the range of 18 degrees to 20 degrees.

  From this, the diameter and the length of the female connector 2 are set so that the closure line L of the fluid represented by the above equation is positioned lower than the height position 10 mm above the maximum height position a of the fold of the bottom member 12. Design.

  Thus, when the fluid closing line L is positioned lower than the position 10 mm above the maximum height position a of the fold of the bottom member 12, virtually no fluid closing line L is generated at least at the lowest point b. The following reasons can be considered for becoming difficult to occur.

  That is, when the fluid is discharged from the fluid storage portion 13 of the packaging bag 1 by the discharge member 3, the lowermost point b of the closure line L of the assumed fluid and the both sides c of the maximum diameter t of the female connector 2, As the wall surface members 11 approach each other so as to approach the isosceles triangle T connected to c, the bottom surface member 12 is folded inward along the width direction. For this reason, in the state where the packaging bag 1 is approximated to the above-mentioned isosceles triangle T, as shown in FIG. 10 (e), the vicinity of the bottom portion of the fluid containing portion 13 of the packaging bag 1 is a conventional fluid discharge tool. In the case of the fluid discharger according to the present embodiment, as shown in FIG. 5 (d), most of the fluid remains in the vicinity of the bottom of the fluid storage portion 13 of the packaging bag 1. do not do.

  Further, even if the wall members 11, 11 approach each other, as a result of the bottom member 12 being folded back inward, the adhesion of the wall members 11, 11 is inhibited by the bottom member 12. For example, when the lowest point b of the assumed closing line L of the fluid is positioned below the maximum height position a of the bottom member 12, the wall members 11, 11 at the bottom and the back at least at the lowest point b of the closing line L Even if it tries to closely contact, it is completely obstructed by the bottom member 12 folded back inward. Also, even if the fluid closing line L is positioned above the maximum height position a of the bottom member 12, it may be below the height position of 10 mm above the maximum height position a of the fold of the bottom member 12. For example, at least the lowermost point b of the closing line L, the close contact of the wall members 11, 11 is inhibited by the action of the return of the bottom member 12.

  As described above, the fluid contained in the packaging bag 1 is gradually discharged while the occurrence of the closed line L of the fluid caused by the close contact of the wall members 11, 11 at least at the lowermost point b is gradually discharged. As shown in FIG. 5 (e), it is considered that the wall members 11, 11 and the bottom member 12 finally come in close contact with each other when little fluid remains.

Second Embodiment
Next, a second embodiment of the fluid discharger according to the present invention will be described with reference to FIG. In the following, only the configuration different from the above embodiment will be described, and the description of the same configuration will be omitted and the same reference numeral will be attached.

  In the present embodiment, the female connector 2 is provided with the plug 22 at a lower end portion of the main body portion 21 at a predetermined distance. The plug 22 is detachably engaged with the lower end portion of the female connector 2 via an arm or the like (not shown).

  Before use of the fluid discharger, the plug 22 engages with the lower end portion of the female connector 2 and closes the lower end opening 21 c of the female connector 2. Further, at the start of use of the fluid discharger, the plug 22 engages with the lower end of the male connector 32 and is disengaged from the lower end of the female connector 2 as the male connector 32 is inserted. And the lower end portion opening 21 c of the female connector 2 is opened. Furthermore, after use of the fluid discharger, as shown in FIGS. 1 to 3, the plug 22 is engaged so as to be fitted to the lower end of the female connector 2 as the male connector 32 is pulled out, The lower end opening 21c is closed again.

  Thus, also in the present embodiment, the lowermost point b of the closure line L of the fluid is positioned lower than 10 mm above the maximum height position a of the bottom surface member 12 of the packaging bag 1 as in the first embodiment. As shown in FIGS. 6 (b) to 6 (d), until the final state shown in FIG. 6 (e), the fluid closing line L does not occur under the female connector 2 or does not occur very easily. Therefore, the passage of the fluid can be secured below the male connector 32 of the discharge member 3, and the fluid contained in the flexible packaging bag 1 can be discharged easily and reliably.

  And about the position of this closure line L, it is assumed by the maximum diameter and length (position of a lower end part) of female connector 2. As shown in FIG. Specifically, the position of the closure line L of the fluid is expressed by the following equation.

O = t / 2 ÷ tan (θ / 2)
O: Assumed position of occlusion line L (distance from lower end of female connector 2 to lowest point b of occlusion line L of fluid)
t: the maximum diameter of the female connector 2 (including the plug 22) in the fluid storage portion 13 in the thickness direction (direction perpendicular to the wall surface member 11) θ: the lowest point b of the fluid closing line L Angle connecting the two sides c, c of the maximum diameter t of the female connector 2

  Thus, when calculating the position of the closing line L, the maximum diameter t of the female connector 2 of the above-described type is the maximum including not only the main body 21 of the female connector 2 but also the plug 22 of the female connector 2 The diameter t is selected. That is, when the maximum diameter t of the plug 22 of the female connector 2 is larger than the maximum diameter t of the main body portion 21 of the female connector 2, the maximum diameter t of the plug 22 is selected.

  In addition, when a part of the female connector 2 is present on a line segment connecting the lowermost point b of the closed line L and both sides c and c of the maximum diameter t of the female connector 2, The next largest diameter t 'is selected such that there is no part of the female connector 2 on the line segment. For example, as shown in FIG. 7, assuming that the maximum diameter t of the main body 21 of the female connector 2 is selected, the lowermost point b of the closure line L and the side portions c, c of the maximum diameter of the female connector 2 When the plug of the female connector 2 exists on the line connecting the two, the maximum diameter t ′ of the plug 22 is selected so that the plug 22 does not exist on the line. At this time, the lowest point of the closed line is b ', the assumed position of the closed line is O', and an isosceles triangle connecting the lowest point b 'of the closed line and both sides c' and c 'of the maximum diameter t'. Is T '.

<Verification experiment>
Next, since the verification experiment was performed about the fluid discharge tool which concerns on this invention, suppose that it demonstrates below.

  While preparing four kinds of fluid discharge tools of the following (1) to (4), various widths (width 80 mm to 205 mm of fluid storage portion 13), heights (height 75 mm to 225 mm of fluid storage portion 13), The packaging bag 1 of thickness (maximum height 25 mm-50 mm of a bottom face member) was prepared. This packaging bag 1 is formed by laminating a polyethylene terephthalate film (12 μm in thickness) as the outermost layer, an aluminum foil (7 μm in thickness) as the intermediate layer, a polyamide film (15 μm in thickness), and a linear low density polyethylene film (100 μm in thickness) as the innermost layer. It consists of the film produced. Then, with respect to the plurality of fluid discharge devices in which the female connectors 2 of the following (1) to (4) are attached to the various packaging bags 1 described above, after the fluid containing portion 13 is full of fluid, the discharge member 3 Discharges the fluid, and when the fluid is hardly discharged (when the discharge amount per push operation becomes 1 cc or less), the fluid remaining rate (the fluid with respect to the maximum capacity of the fluid storage portion 13) When the ratio of the remaining amount of) was verified, the result shown in FIG. 8 was obtained.

(1) Female connector 2 of connector A: t = 7 mm, C = 19.5 mm
(2) Female connector 2 of connector B: t = 11.4 mm, C = 28 mm
(3) Female connector 2 of connector C: t = 11.4 mm, C = 65 mm
(4) Connector D: Female connector 2 adjusted in the range of t = 11.4 mm, C = 35 mm to 75 mm

  Then, based on each plot shown in FIG. 8, as shown in FIG. 9, the horizontal axis of the fluid axis is shown for each distance x between the lower end of the female connector 2 and the maximum height position a of the folding back of the bottom member 12. When the probability distribution was made the remaining rate, if x ≦ 10, the remaining rate of the fluid would be about 10% or less, which is not a problem, and x 0 0 (less than the maximum height of the bottom member). And it turned out that the remaining rate of fluid becomes 10% or less with a fairly high probability. From this, it can be confirmed that the closure line L is preferably positioned lower than the height position of 10 mm above the maximum height position a of the fold of the bottom surface member 12 as described above.

  In this embodiment, the lower end portion of the female connector 2 is positioned above the maximum height position a of the folding back of the bottom surface member 12 of the packaging bag 1, but the cost of the material of the female connector 2 is And in consideration of the volume of fluid in the fluid containing portion 13 of the packaging bag 1 that can be accommodated, it is preferable to be positioned at a height equal to or higher than half the full height of the fluid containing portion 13 of the packaging bag 1. The total height of the fluid storage portion 13 of the packaging bag 1 is the height from the upper edge 11a of the wall surface member 11 (particularly, the portion where the female connector 2 is heat-sealed) to the lowest point d of the bottom surface member 12. Point to

  In addition, although the lowest point b of the assumed closing line L of the fluid is positioned lower than the height position a of 10 mm information of the maximum height of the folding back of the bottom surface member 12 of the packaging bag 1, In order to make the closure line L less likely to occur, it is preferable to be located below the maximum height position a of the fold of the bottom member 12. Also, if the lowest point b of the fluid closing line L assumed is located above the lowest point d of the bottom surface member 12 of the packaging bag 1, it is difficult to cause the fluid closing line L to occur. Is sufficiently possible.

  In addition, the size of the packaging bag 1 is not particularly limited, but the width of the fluid storage portion 13 is 40 mm to 320 mm in order to effectively realize the above-mentioned state in which the occlusion line L of fluid does not easily occur. More preferably, the height is 40 mm to 250 mm and the height is 70 mm to 350 mm, and the height (a to d distance) of folding of the bottom member 12 is 5 mm to 80 mm, more preferably 5 mm to 60 mm.

  Further, although the female connector 2 into which the male connector 32 is inserted is adopted as the connector, other connectors may be used as long as they are connected to the discharge member 3.

  Further, although the edge portions of the wall surface members 11, 11 and the bottom surface member 12 are adhered by heat sealing, they may be joined by other methods. In addition, the wall surface members 11 and 11 and the bottom surface member 12 may be configured by folding back one member. In short, the packaging bag 1 is in a state in which both side portions of the wall surface members 11, 11 are connected without any other member, and the bottom surface member 12 is inward before the fluid filling at the lower end portions of the wall surface members 11, 11. It may be a so-called standing pouch which is in a connected state as it is folded back.

  Although the embodiments of the present invention have been described above with reference to the drawings, the present invention is not limited to the illustrated embodiments. Various modifications and variations can be made to the illustrated embodiment within the same or equivalent scope of the present invention.

DESCRIPTION OF SYMBOLS 1 ... Packaging bag 11 ... Wall surface member 12 ... Bottom surface member 13 ... Fluid accommodating part 2 ... Female connector 21 ... Body part 22 ... Plug 3 ... Discharge member 31 ... Pump part 32 ... Male connector

Claims (7)

Flexible consisting of a pair of opposed front and back wall members and a bottom member provided at the lower edge of the wall member, wherein a predetermined fluid is stored in the fluid storage part surrounded by the wall member and the bottom member With a sex packaging bag,
A connector provided in such a manner as to project to the fluid containing portion at an edge portion of the packaging bag;
And a discharge member connected to the connector,
In the process of suctioning and discharging the fluid stored in the fluid storage unit by the discharge member, the wall surface members of the packaging bag approach each other, and the bottom surface member of the packaging bag is directed to the fluid storage unit A fluid discharger in which the packaging bag is deformed while being folded back inside;
The connector is
The lower end portion is located above the maximum height position of the fold of the bottom member of the packaging bag, and
When the packaging bag is deformed, the lowermost point of the fluid closing line generated below the connector by the close contact of the wall members of the packaging bag is the maximum height position of the fold of the bottom member of the packaging bag The diameter and the length of the connector are formed so as to be located below the height position of 10 mm above the above. Flexible consisting of a pair of opposed front and back wall members and a bottom member provided at the lower edge of the wall member, wherein a predetermined fluid is stored in the fluid storage part surrounded by the wall member and the bottom member With a sex packaging bag,
A connector provided in such a manner as to project to the fluid containing portion at an edge portion of the packaging bag;
And a discharge member connected to the connector,
In the process of suctioning and discharging the fluid stored in the fluid storage unit by the discharge member, the wall surface members of the packaging bag approach each other, and the bottom surface member of the packaging bag is directed to the fluid storage unit A fluid discharger in which the packaging bag is deformed while being folded back inside;
In the connector, the lowermost point of the fluid closing line generated below the connector is positioned lower than the maximum height position of the fold of the bottom member of the packaging bag due to close contact between the wall members of the packaging bag. As described above, the diameter and length of the connector are formed. The fluid discharge device according to claim 1 or 2, wherein the position of the closure line of the fluid is expressed by the following equation.
O = t / 2 ÷ tan (θ / 2)
O: Expected position of occlusion line (distance from lower end of connector to lowest point of occlusion line of fluid)
t: maximum diameter in the thickness direction (perpendicular to the wall surface member) of the packaging bag of the connector in the fluid storage portion θ: angle connecting the lowermost point of the fluid closing line and both sides of the maximum diameter t of the connector The connector is provided with a plug engageable at a lower end portion,
The plug is positioned above the maximum height position of the fold of the bottom member of the packaging bag, and
The fluid discharge device according to claim 3, wherein the position of the closure line of the fluid is expressed by the following equation.
O = t / 2 ÷ tan (θ / 2)
O: Expected position of occlusion line (distance from lower end of connector to lowest point of occlusion line of fluid)
t: The maximum diameter in the thickness direction (the direction perpendicular to the wall member) of the packaging bag of the connector (including the plug) in the fluid storage portion θ: the lowest point of the fluid closing line and the maximum diameter t of the connector Angle connecting both sides   The fluid ejection device according to claim 3 or 4, wherein an angle θ connecting the lowermost point of the fluid closing line and both sides of the maximum diameter t of the connector is 18 degrees to 20 degrees.   When a part of the connector is present on a line segment connecting the lowest point of the fluid closing line and both sides of the maximum diameter of the connector, the part of the connector does not exist on the line segment The fluid discharge device according to any one of claims 1 to 5, wherein the next largest diameter t is selected. A packaging bag for use in the fluid discharger according to any one of claims 1 to 6.