JP7017225B2 - Fluid discharger and packaging bag - Google Patents

Description

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

Conventionally, rigid plastic packaging containers have generally been used in products that handle various fluids such as cosmetics, shampoos, soaps, and perm solutions. And, in consideration of the environment for the earth, even after all the fluid is discharged from the plastic packaging container, the plastic packaging container is maintained without being discarded, and it is made into a flexible packaging bag for refilling. The contained fluid is refilled in a plastic packaging container.

However, in this case, since the fluid comes into contact with air at the time of refilling or after refilling, there is a risk that the fluid will deteriorate. In addition, if the plastic packaging container is used for a long period of time, the appearance of the packaging container will be gradually impaired due to fluid adhesion, mold growth, and wear on the packaging container. It wasn't always pleasant for me.

Therefore, in recent years, flexible packaging bags have been used not as refills but as the main body of products. Specifically, this packaging bag is composed of a pair of front and back wall surface members facing each other and a bottom surface member provided on the lower edge portion of the wall surface member, and is designated as a fluid accommodating portion surrounded by the wall surface member and the bottom surface member. A flexible standing pouch that houses the fluid of. Further, it includes a connector provided at the edge of the packaging bag so as to project to the fluid accommodating portion, and a discharge member connected to the connector. According to this, since the fluid does not come into contact with 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 can be replaced with a new packaging bag, so that a new and clean state can be maintained at all times.

However, for example, in the case of the flexible packaging bag 1 shown in FIG. 10A, air does not enter the inside of the packaging bag in the process of discharging the fluid contained in the packaging bag 1 by the discharge member. As shown in FIGS. 10 (b) to 10 (d), the front and back wall surface members 11 and 11 approach each other, and the bottom surface member 12 is folded back inward toward the fluid discharge portion 13 along the width direction. As shown in FIG. 10 (e), the wall surfaces 11 and 11 finally come into close contact with each other below the discharge member 2 to block the fluid passage. There is a problem that the fluid remains inside the packaging bag 1 (particularly at the bottom).

Therefore, conventionally, a box-shaped container for holding a flexible packaging bag has been proposed so as to be deformed while preventing the wall surfaces of the packaging bag from coming into close contact with each other (Patent Document 1). , 2). However, in this case, the box-shaped container had to be used continuously, and in the end, the box-shaped container became dirty and the appearance was spoiled.

On the other hand, in the field of food, flexible packaging bags are often used, and in order to solve the problem of obstructing the fluid passage in the packaging bag, not only the tip of the spout or the spout, but also the tip of the spout, as well as the tip of the spout, is used. Various ideas have been attempted, such as forming a plurality of suction ports on the body portion (see Patent Documents 3 to 6). However, since all of these structures are structures in which the packaging bag is compressed by a human hand and the fluid is sucked by the human mouth, the fluid is discharged by the ejection member without injecting air into the inside of the packaging bag. It was difficult to apply to the structure.

Of course, it is conceivable to form a long connector so that the lower end of the connector is located near the bottom member inside the packaging bag, but in this case, the fluid capacity decreases by the length of the connector, or There is a problem that the material cost of the connector increases. Moreover, even if the residual amount of the fluid near the bottom of the packaging bag can be reduced, there is a possibility that a new fluid may remain near the top of the packaging bag depending on the usage mode.

Japanese Unexamined Patent Publication No. 2013-209098 Japanese Unexamined Patent Publication No. 5-77844 Jikken Sho 63-76653 Gazette Japanese Unexamined Patent Publication No. 2008-143534 Japanese Unexamined Patent Publication No. 2008-308193 Japanese Patent No. 4921944

The present invention has been made in view of the above-mentioned technical background, and can easily and surely discharge the fluid contained in the packaging bag, and can reduce the residual amount of the fluid. The purpose is to provide the ingredients.

As a result of repeated experiments on the residual amount of fluid for packaging bags and connectors of various sizes, the applicant has found that the position of the fluid blockage line generated in the packaging bag affects the residual amount of fluid. He discovered and invented where in the packaging bag the position of the fluid blockage line would reduce the residual amount of fluid to a reasonable range, and that the position of the blockage line was defined by the diameter of the connector. I came to invent.

That is, in order to achieve the above object, the present invention comprises a pair of front and back wall members facing each other and a bottom surface member provided on the lower edge portion of the wall surface member, and is surrounded by the wall surface member and the bottom surface member. A flexible packaging bag in which a predetermined fluid is accommodated in the fluid accommodating portion, a connector provided at the edge of the packaging bag so as to project from the fluid accommodating portion, and a discharge member connected to the connector. And. In the process of sucking and discharging the fluid contained in the fluid accommodating portion by the discharging member, the wall surface members of the packaging bag approach each other and the bottom surface member is folded back inward toward the fluid accommodating portion. This is a fluid discharger in which the packaging bag is deformed. The lower end of the connector is located above the maximum height position of the folded bottom member of the packaging bag, and when the packaging bag is deformed, the wall surface members of the packaging bag are in close contact with each other. The diameter and length of the connector so that the lowest point of the fluid blockage line generated below the connector is located below the height position 10 mm above the maximum height position of the folded back of the bottom member of the packaging bag. Is formed.

According to this, in the fluid accommodating portion of the packaging bag, a fluid blockage line does not occur or is extremely unlikely to occur below the connector. Therefore, a fluid passage is secured below the connector and the fluid is accommodated in the packaging bag. The existing fluid can be discharged easily and reliably.

Further, in the connector, the lowest point of the fluid blocking line generated below the connector due to the close contact between the wall surface members of the packaging bag is located below the maximum height position of the folded back of the bottom member of the packaging bag. As such, it is preferable that the diameter and length of the connector are formed.

Further, the position of the fluid blockage line may be expressed by the following equation.

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

Further, the connector is provided with a plug engageable at the lower end portion, the plug is located above the maximum height position of the folded back of the bottom member of the packaging bag, and the position of the fluid blocking line is set. It may be expressed by the following formula.

O = t / 2 ÷ tan (θ / 2)
O: Assumed position of the blockage line (distance from the lower end of the connector to the lowest point of the blockage line of the fluid)
t: Maximum diameter in the thickness direction (direction perpendicular to the wall surface member) of the packaging bag of the connector (including the plug) in the fluid accommodating portion θ: Both sides of the lowest point of the fluid blocking line and the maximum diameter of the connector Angle connecting the parts

Further, the angle θ connecting the lowest point of the fluid blockage 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 blockage line and both side portions c and c of the maximum diameter of the connector, the connector of the connector is placed on the line segment. It is preferable that the next maximum diameter t is selected so that a part does not exist.

Further, the packaging bag according to the present invention is characterized in that it is used for the above-mentioned fluid discharge tool.

According to the present invention, in the fluid storage portion of the packaging bag, a fluid blockage line does not occur or is extremely unlikely to occur below the connector. Therefore, a fluid passage is secured below the connector and the fluid is stored in the packaging bag. The fluid can be discharged easily and surely, and the residual amount of the fluid can be reduced.

Therefore, in products that handle various fluids such as cosmetics, shampoos, soaps, and perm solutions, flexible packaging bags can be used, and the fluids do not come into contact with air at all or hardly, resulting in deterioration of the fluids. Can be prevented. In addition, after all the fluid is discharged from the packaging bag, it can be replaced with a new packaging bag, so that a new and clean state can be maintained at all times.

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

<First Embodiment>
Next, the first embodiment of the fluid discharge tool according to the present invention will be described with reference to FIGS. 1 to 5. In FIGS. 1 to 5, the upper side, both sides, and the lower side of the drawing are the upper side, both sides, and the lower side of the fluid discharge tool.

As shown in FIG. 1, the fluid discharge tool includes a flexible packaging bag 1 in which a fluid is housed, a female connector 2 made of synthetic resin provided on the upper edge portion 11a of the packaging bag 1, and the female connector 2. A synthetic resin discharge member 3 connected to the female connector 2 is provided. As the fluid, various fluids such as cosmetics, shampoos, soaps, perm solutions and the like, which have low to high viscosities, can be applied.

As shown in FIGS. 2 to 4, the packaging bag 1 includes a pair of front and back wall surface members 11 and 11 facing each other, and a bottom surface member 12 provided on the lower edge portion 11c of the bottom portion of the wall surface members 11 and 11. , So-called standing pouch. In this packaging bag 1, the upper edge portions 11a of the wall surface members 11 and 11 are heat-sealed with each other except for the female connector 2, and the side edge portions 11b of the wall surface members 11 and 11 are heat-sealed with each other and the wall surface is covered. The lower edge portion 11c of the members 11 and 11 and the peripheral edge portion of the bottom surface member 12 are heat-sealed, and the fluid accommodating portion 13 is formed with a space surrounded by the wall surface members 11 and 11 and the bottom surface member 12.

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

Therefore, before the fluid is accommodated in the fluid accommodating portion 13, the front and back wall surface members 11 and 11 are in contact with each other except for the portion where the female connector 2 is present, and the bottom surface member 12 is in contact with the fluid. It is folded inward toward the accommodating portion 13 along the width direction, and a so-called gusset portion is formed.

Further, when the fluid accommodating portion 13 of the packaging bag 1 is filled with the fluid without injecting air, as shown in FIG. 2, the front and back wall surface members 11 and 11 swell while being separated from each other in the thickness direction. The bottom surface member 12 swells downward and is formed so as to incline while gradually bending downward from the side edge portions 11b toward the central portion.

As shown in FIG. 5A, when the fluid accommodating portion 13 of the packaging bag 1 is completely filled with the fluid, the distance from the upper edge portion 11a of the wall surface member 11 to the lowest point d of the bottom surface member 12. (Maximum height of the fluid accommodating portion 13) is set to H. Further, the height from the maximum height position a of the folded-back of the bottom surface member 12 to the lowest point d of the bottom surface member 12 (the maximum height of the folded-back of the bottom surface member 12) is set to D.

As shown in FIGS. 2 to 4, the female connector 2 is heat-sealed so that the upper portion is sandwiched between the central portions of the upper edge portions 11a of the wall surface members 11 and 11 of the packaging bag 1, and the fluid of the packaging bag 1 is fluidized. The accommodating portion 13 is provided so 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 portion 11a of the wall surface member 11 at a height C and at the same time. , It 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 has a conduction path 21a having openings at both ends extending in the axial direction inside, and a male connector 32 to be described later of the discharge member 3 is inserted from the proximal end opening 21b to insert a conduction path. After the male connector 32 is completely inserted through the 21a, the male connector 32 of the discharge member 3 protrudes from the lower end opening 21c.

The optimum diameter and length (position of the lower end portion) 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 is a pump unit by performing a piston operation of the upper pump unit 31a up and down with respect to the lower pump unit 31b. The fluid is sucked by using the principle that the inside of 31 becomes a vacuum.

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

Further, the male connector 32 is formed in a cylindrical shape according to the inner surface shape of the conduction path 21a of the female connector 2, and when connected to the female connector 2, at least the conduction path 21a of the female connector 2 is formed. It adheres to a part of the package and maintains the airtightness of the fluid accommodating portion 13 of the packaging bag 1.

Further, in the male connector 32, a plurality of suction ports 32a are formed at the tip portion thereof, and a flow passage (not shown) extending in the axial direction is formed inside the male connector 32.

Next, the design of the optimum length and diameter of the female connector 2 in the present fluid discharge tool will be specifically described.

First, when the upper pump portion 31a is pistoned with respect to the lower pump portion 31b in the pump portion 31, the fluid contained in the fluid accommodating portion 13 of the packaging bag 1 is sucked from the suction port 32a of the male connector 32. Then, after passing through the flow passage of the male connector 32, the pump unit 31 is discharged to the outside from the discharge port 31c.

When the fluid is discharged from the fluid accommodating portion 13 of the packaging bag 1 by the ejection member 3 in this way, air does not enter the inside of the fluid accommodating portion 13 of the packaging bag 1. As shown in b) to (d), the front and back wall surface members 11 and 11 approach each other, and the bottom surface member 12 is deformed while being folded inward toward the fluid accommodating portion 13 along the width direction. As shown in FIG. 10 (e), finally, a part of the wall surface members 11 and 11 are in close contact with each other below the discharge member 3, so that a blockage line L that blocks the fluid passage is generated. There is a problem that the fluid remains inside (particularly at the bottom) of the fluid accommodating portion 13 of the packaging bag 1.

However, in the case of the fluid discharge tool according to the present embodiment, the lowest point b of the fluid blockage line L is located below the maximum height position a of the bottom member 12 of the packaging bag 1 by 10 mm above. As shown in 5 (b) to (d), the wall surface members 11 do not adhere to each other and do not block at least at the lowest point b of the block line L until the final state shown in FIG. 5 (e) is reached, or extremely. Since it is difficult to block the fluid, a fluid passage is secured below the female connector 2, and the fluid contained in the flexible packaging bag 1 can be easily and surely discharged.

The position of the closed line L is assumed by the maximum diameter and length (position of the lower end portion) of the female connector 2, and is specifically expressed by the following equation.

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

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

From this, the diameter and length of the female connector 2 so that the fluid blockage line L represented by the above equation is located below the height position 10 mm above the maximum height position a of the folding back of the bottom member 12. You just have to design it.

As described above, when the fluid blockage line L is located below the position 10 mm above the maximum height position a of the folding back of the bottom member 12, the fluid blockage line L does not substantially occur at least at the lowest point b. , Or the reason why it is less likely to occur is as follows.

That is, when the fluid is discharged from the fluid accommodating portion 13 of the packaging bag 1 by the discharge member 3, the lowest point b of the assumed fluid blockage line L and both side portions c of the maximum diameter t of the female connector 2 The wall surface members 11 approach each other so as to approach the isosceles triangle T connected to c, and the bottom surface member 12 is folded inward along the width direction. Therefore, in a state where the packaging bag 1 is approximated to the isotropic triangle T, if it is a conventional fluid discharger, as shown in FIG. 10 (e), the vicinity of the bottom of the fluid accommodating portion 13 of the packaging bag 1 However, in the case of the fluid discharge tool according to the present embodiment, almost all the fluid remains near the bottom of the fluid accommodating portion 13 of the packaging bag 1, as shown in FIG. 5 (d). do not do.

Further, even if the wall surface members 11 and 11 approach each other, the bottom surface member 12 is folded back inward, and as a result, the bottom surface member 12 hinders the adhesion of the wall surface members 11 and 11. For example, when the lowest point b of the assumed fluid blockage line L is located below the maximum height position a of the bottom surface member 12, the front and back wall surface members 11 and 11 are at least at the lowest point b of the blockage line L. Even if it tries to come into close contact, it is completely hindered by the bottom member 12 folded inward. Further, even if the assumed fluid blockage line L is located above the maximum height position a of the bottom surface member 12, it is below the height position 10 mm above the maximum height position a of the folded back of the bottom surface member 12. For example, at least at the lowest point b of the closing line L, the contact of the wall surface members 11 and 11 is hindered by the folding action of the bottom surface member 12.

In this way, the fluid contained in the packaging bag 1 is gradually discharged while the blockage line L of the fluid due to the close contact of the wall surface members 11 and 11 is prevented from occurring at least at the lowest point b, and finally. As shown in FIG. 5 (e), it is considered that the wall surface members 11 and 11 and the bottom surface member 12 finally come into close contact with each other at the stage where almost no fluid remains.

<Second embodiment>
Next, a second embodiment of the fluid discharge tool according to the present invention will be described with reference to FIG. In the following, only the configurations different from the above-described embodiment will be described, and the same configurations will be omitted and the same reference numerals will be given.

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

Before using the fluid discharge tool, the plug 22 is engaged so as to fit into the lower end portion of the female connector 2 and closes the lower end opening 21c of the female connector 2. Further, at the start of use of the fluid discharge tool, the plug 22 is engaged so as to fit into the lower end portion of the male connector 32, and is disengaged from the lower end portion of the female connector 2 with the insertion of the male connector 32. It is located at a predetermined position below the female connector 2 and opens the lower end opening 21c of the female connector 2. Further, after using the fluid discharge tool, as shown in FIGS. 1 to 3, the plug 22 is engaged so as to fit into the lower end portion of the female connector 2 as the male connector 32 is pulled out. The lower end opening 21c is closed again.

Therefore, also in the present embodiment, as in the first embodiment, the lowest point b of the fluid blockage line L is located below the maximum height position a of the bottom member 12 of the packaging bag 1 by 10 mm above. As shown in FIGS. 6 (b) to 6 (d), the fluid blockage line L does not occur or is extremely unlikely to occur below the female connector 2 until the final state shown in FIG. 6 (e) is reached. Therefore, a fluid passage 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 easily and reliably discharged.

The position of the closed line L is assumed by the maximum diameter and length (position of the lower end portion) of the female connector 2. Specifically, the position of the blockage line L of this fluid is expressed by the following equation.

O = t / 2 ÷ tan (θ / 2)
O: Assumed position of the blockage line L (distance from the lower end of the female connector 2 to the lowest point b of the fluid blockage line L)
t: Maximum diameter of the packaging bag 1 of the female connector 2 (including the plug 22) in the fluid accommodating portion 13 in the thickness direction (direction perpendicular to the wall surface member 11) θ: With the lowest point b of the fluid blocking line L Angle connecting both sides c and c of the maximum diameter t of the female connector 2

In this way, when calculating the position of the blockage line L, the maximum diameter t of the female connector 2 in the above formula 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 21 of the female connector 2, the maximum diameter t of the plug 22 is selected.

Further, the female connector 2 is the case where a part of the female connector 2 is present on a line segment connecting the lowest point b of the closed line L and both side portions c and c of the maximum diameter t of the female connector 2. The next maximum diameter t'is selected so that a part of the female connector 2 does not exist on the line segment. For example, as shown in FIG. 7, assuming that the maximum diameter t of the main body portion 21 of the female connector 2 is selected, the lowest point b of the closing line L and both side portions c and c of the maximum diameter of the female connector 2 When the plug of the female connector 2 is present on the line segment connecting the two, the maximum diameter t'of the plug 22 is selected so that the plug 22 is not present on the line segment. At this time, the lowest point of the blockage line is b', the assumed position of the blockage line is O', the lowest point b'of the blockage line and the isosceles triangle connecting both sides c'and c'of the maximum diameter t'. Is T'.

<Verification experiment>
Next, a verification experiment was conducted on the fluid discharge tool according to the present invention, which will be described below.

In addition to preparing the following four types of fluid discharge tools (1) to (4), various widths (width 80 mm to 205 mm of the fluid accommodating portion 13) and height (height 75 mm to 225 mm of the fluid accommodating portion 13), A packaging bag 1 having a thickness (maximum height of the bottom member 25 mm to 50 mm) was prepared. In this packaging bag 1, a polyethylene terephthalate film (thickness 12 μm) is laminated as an outermost layer, an aluminum foil (thickness 7 μm) and a polyamide film (thickness 15 μm) as an intermediate layer, and a linear low density polyethylene film (thickness 100 μm) as an innermost layer. It consists of a film made by Therefore, for a plurality of fluid dischargers having the female connectors 2 of the following (1) to (4) attached to the above-mentioned various packaging bags 1, the fluid accommodating portion 13 is fully filled with the fluid, and then the discharge member 3 is used. When the fluid is almost completely discharged (when the discharge amount per three push operations becomes 1 cc or less), the remaining amount of the fluid (fluid with respect to the maximum capacity of the fluid accommodating portion 13). The result shown in FIG. 8 was obtained when the ratio of the residual amount of the fluid was verified.

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

Then, based on each plot shown in FIG. 8, as shown in FIG. 9, the horizontal axis is each distance x between the lowest point b of the fluid blockage line L and the maximum height position a of the folding back of the bottom member 12. When a probability distribution was created with the remaining amount of fluid as x≤10, the remaining amount of fluid was generally 10% or less, which is not a problem, and x≤0 (maximum height of folding back of the bottom member). In the case of (below), it was found that there is a high probability that the remaining amount of fluid will be 10% or less. From this, it can be confirmed that the closing line L should be positioned below the height position 10 mm above the maximum height position a of the folding back of the bottom surface member 12 as described above.

In the present embodiment, 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, but the cost of the material of the female connector 2 is high. In consideration of the capacity of the fluid accommodating portion 13 of the packaging bag 1 and the capacity of the fluid accommodating portion 13, it is preferable that the packaging bag 1 is located at a height equal to or more than half the total height of the fluid accommodating portion 13. The total height of the fluid accommodating portion 13 of the packaging bag 1 is the height from the upper edge portion 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.

Further, it is assumed that the lowest point b of the assumed fluid blockage line L is located below the height position a of 10 mm information of the maximum height of the folded back of the bottom member 12 of the packaging bag 1, but the fluid It is preferable that the bottom member 12 is located below the maximum height position a of the folding back in order to make the closing line L less likely to occur. Further, if the lowest point b of the assumed fluid blockage line L is located above the lowest point d of the bottom member 12 of the packaging bag 1, the fluid blockage line L is less likely to occur. Is fully possible.

The size of the packaging bag 1 is not particularly limited, but the width of the fluid accommodating portion 13 is 40 mm to 320 mm in order to effectively realize the above-mentioned state in which the fluid blockage line L is unlikely to occur. It is more preferably 40 mm to 250 mm, the height is 70 mm to 350 mm, and the folded height (distance between a to d) of the bottom member 12 is 5 mm to 80 mm, still 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 edges of the wall surface members 11 and 11 and the bottom surface member 12 are bonded by heat sealing, they may be bonded by other methods. Further, the wall surface members 11, 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 where both side portions of the wall surface members 11 and 11 are connected without any other member, and the bottom surface member 12 is inside the lower end portions of the wall surface members 11 and 11 before fluid filling. It may be a so-called standing pouch that is folded and connected.

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

1 ... Packaging bag 11 ... Wall member 12 ... Bottom member 13 ... Fluid accommodating part 2 ... Female connector 21 ... Main body part 22 ... Plug 3 ... Discharge member 31・ ・ ・ Pump part 32 ・ ・ ・ Male connector

Claims (7)

It consists of a pair of front and back wall members facing each other and a bottom surface member provided on the lower edge portion of the wall surface member. The edges are heat-sealed to each other, the lower edge of the wall surface member and the peripheral edge of the bottom surface member are heat-sealed, and a predetermined fluid is placed in the fluid accommodating portion surrounded by the wall surface member and the bottom surface member. A flexible packaging bag formed to have a width of 80 mm to 205 mm for the fluid accommodating portion, a height of 75 mm to 225 mm for the fluid accommodating portion, and a maximum height of 25 mm to 50 mm for the bottom member .
A connector provided at the edge of the packaging bag so as to project to the fluid accommodating portion,
A discharge member connected to the connector is provided.
In the process of sucking and discharging the fluid contained in the fluid accommodating portion by the discharging member, the fluid approaches an isotropic triangle connecting the lowest point of the assumed fluid occlusion line and both sides of the maximum diameter of the connector. As described above, the fluid discharge tool deforms the packaging bag while the wall surface members of the packaging bag approach each other and the bottom surface member of the packaging bag is folded inward toward the fluid accommodating portion. There,
The connector is
The lower end is located above the maximum height position of the folded back of the bottom member of the packaging bag, and
When the packaging bag is deformed, the lowest point of the fluid blocking line generated below the connector due to the close contact between the wall surface members of the packaging bag is the maximum height of the folded back of the bottom member of the packaging bag. A fluid discharger characterized in that the diameter and length of the connector are formed so as to be located below a height position 10 mm above the bag position. It consists of a pair of front and back wall members facing each other and a bottom surface member provided on the lower edge portion of the wall surface member. The edges are heat-sealed to each other, the lower edge of the wall surface member and the peripheral edge of the bottom surface member are heat-sealed, and a predetermined fluid is placed in the fluid accommodating portion surrounded by the wall surface member and the bottom surface member. A flexible packaging bag to be accommodated,
A connector provided at the edge of the packaging bag so as to project to the fluid accommodating portion,
A discharge member connected to the connector is provided.
In the process of sucking and discharging the fluid contained in the fluid accommodating portion by the discharging member, the fluid approaches an isotropic triangle connecting the lowest point of the assumed fluid occlusion line and both sides of the maximum diameter of the connector. As described above, the fluid discharge tool deforms the packaging bag while the wall surface members of the packaging bag approach each other and the bottom surface member of the packaging bag is folded inward toward the fluid accommodating portion. There,
In the connector, the lowest point of the fluid blocking line generated below the connector due to the close contact between the wall surface members of the packaging bag is below the maximum height position of the folded back of the bottom member of the packaging bag. A fluid discharger characterized in that the diameter and length of the connector are formed so as to be located. The fluid discharger according to claim 1 or 2, wherein the position of the fluid blockage line is represented by the following formula.
O = t / 2 ÷ tan (θ / 2)
O: Assumed position of the blockage line (distance from the lower end of the connector to the lowest point of the fluid blockage line)
t: Maximum diameter in the fluid accommodating portion in the thickness direction of the packaging bag of the connector (direction perpendicular to the wall surface member) θ: Angle connecting the lowest point of the fluid blockage line and both sides of the maximum diameter t of the connector. The connector is provided with a plug engageable at the lower end thereof.
The plug is located above the maximum height position of the folded back of the bottom member of the packaging bag, and is located above the maximum height position.
The fluid discharger according to claim 3, wherein the position of the fluid blockage line is represented by the following equation.
O = t / 2 ÷ tan (θ / 2)
O: Assumed position of the blockage line (distance from the lower end of the connector to the lowest point of the fluid blockage line)
t: Maximum diameter in the thickness direction (direction perpendicular to the wall surface member) of the packaging bag of the connector (including the plug) in the fluid accommodating portion θ: The lowest point of the fluid blocking line and the maximum diameter t of the connector. Angle connecting both sides The fluid discharge tool according to claim 3 or 4, wherein the angle θ connecting the lowest point of the fluid blockage line and both sides of the maximum diameter t of the connector is 18 degrees to 20 degrees. In the case of the connector, if a part of the connector is present on a line segment connecting the lowest point of the fluid blockage line and both sides of the maximum diameter of the connector, the part of the connector is not present on the line segment. The fluid discharger according to any one of claims 1 to 5, wherein the next maximum diameter t is selected as described above. A packaging bag used for the fluid discharge tool according to any one of claims 1 to 6.

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