WO2008069213A1

WO2008069213A1 - Fluid vessel with airless pump

Info

Publication number: WO2008069213A1
Application number: PCT/JP2007/073418
Authority: WO
Inventors: Kenji Hisumi
Original assignee: M & K Kenneth Co., Ltd.
Priority date: 2006-12-06
Filing date: 2007-12-04
Publication date: 2008-06-12
Also published as: JP4002941B1; TW200824978A; JP2008143529A

Abstract

This invention provides a fluid vessel with an airless pump, comprising an inner vessel formed of a soft material and an outer vessel formed of a hard material, which fluid vessel can solve a problem involved in the conventional fluid vessel. Specifically, the residual amount of contents upon pumping-up of the contents of the vessel to the threshold limit value, which is 10 to 20% by weight, can be reduced to not more than 5% without significantly varying the construction of the airless pump part. In the fluid vessel with an airless pump, unlike the conventional fluid vessel having a disk-like inner vessel bottom face, the bottom face is brought to a downward convexed sphere shape, and the end of a suction pipe in the airless pump is extended to a part near the bottom face of the inner vessel. The above constitution can eliminate an unnecessary space in the shrinking of the inner vessel, and the residual amount of the contents can be brought to not more than 3%.

Description

Specification

Fluid container with airless pump

Technical field

The present invention relates to a fluid container with an airless pump, and more specifically, to a fluid container with an airless pump having the following configuration.

An airless pump is attached to the mouth, and it has a double structure consisting of an inner container made of soft material that contains liquid or sol-like contents and an outer container made of hard material that contains the inner container! /, The entire inner container made up of the mouth, side, and bottom has a substantially cylindrical shape, and the bottom has a curved surface that protrudes downward and is thicker than the side. A fluid container with an airless pump, characterized in that the suction pipe of the airless pump is extended to the vicinity of the bottom!

2. The fluid container with an airless pump according to Configuration 1, wherein the maximum thickness of the bottom surface is in the range of 2 to 4 times the thickness of the side surface of the inner container.

The configuration 1 or configuration 2 is characterized in that the distance from the lower end of the suction pipe of the airless pump to the lowest inner part of the bottom surface of the inner container is within a range of 15 to 35% of the diameter of the inner container. The fluid container with an airless pump as described. Background art

[0002] An airless pump is attached to the mouth portion to form a double structure of an inner container made of a soft material for containing contents such as a liquid or a sol substance and an outer container made of a hard material for containing the inner container. The airless pumped fluid container is well known. Figure 11 shows an example of the configuration.

[0003] An airless pump-equipped fluid container a shown in FIG. 11 has an airless pump 7 attached to a mouth 51, and includes an inner container 5 made of a soft material that contains a content C that is a liquid or a sol-like substance, and an inner container It becomes a double structure of outer container 6 made of hard material to store 5! Inner container Examples of the material 5 include polyethylene and polyvinyl chloride. An example of the material of the outer container 6 is acrylic resin. Furthermore, the airless pump 7 is a known technique, and its configuration is substantially the same as that described in detail in, for example, Patent Document 2 below, and detailed description thereof is omitted.

FIG. 11 shows a state in which the lock of the airless pump 7 is released. By repeatedly pressing and releasing the neck portion 71 in this state, the contents C are discharged from the discharge port 71a. The content C is sucked into the airless pump 7 from the suction pipe 73 inserted into the inner container 5 and discharged from the discharge port 71a. The action of the airless pump 7 causes the inside of the inner container 5 to be substantially airtight. Since it is held, the inner container 5 contracts by the amount of the content C being pumped. That is, since the inner container 5 is made of a soft material, the inner container 5 contracts by a reduced pressure.

[0005] The inner container 5 has a substantially cylindrical shape, and the disk-shaped bottom surface 53 is generally formed so that the peripheral portion thereof is slightly thicker than the side surface 52. For this reason, when the contents C are pumped out to the limit, the inner container 5 has a shape as shown in FIGS. 12A and 12B. That is, the bottom surface 53 has a shape that is slightly bulged on the three sides of the triangle as seen in the cross-sectional view of FIG. 12A, and the side surface 52 forms ribs hl, h2, and h3 in three directions. . As shown in Fig. 11, in the state before pumping out the contents C, the inner container 5 is mounted with a slight gap from the outer container 6, but after use, as shown in Figs. 12A and 12B. (May contact the inner surface of the outer container 6 of 裴 hl, h2, h3.

[0006] It is difficult to give a clear reason why the inner container 5 has a shape as shown in FIGS. 12A and 12B in a state where the contents C have been pumped out to almost the limit. As shown in Fig. 13, when the contents C are pumped out to the limit without being put in the outer container 6, the inner container 5 is substantially flat, that is, 襞 h'l, h'2 are placed in two opposite directions. The bottom surface 53 has a substantially rugby ball shape when viewed from the bottom (not shown). From this point of view, the inner container 5 is contracted so that the number of tubs is the smallest integer, but when the inner container 5 is stored in the outer container 6, the tubs are stretched in two directions. When formed, the lateral extension of the ridges 1 and 2 becomes larger than the radius of the outer container 6 and collides with the outer container 6 to prevent further formation. To avoid this, the next smallest integer of 3 is selected, and it is assumed that 襞 hi, h 2 and h3 are formed in the 3 directions. In any case, when the inner container 5 has a shape as shown in FIGS. 12A and 12B, it becomes difficult to pump the contents C beyond this. That is, no matter how many times the neck 71 (see FIG. 11) is repeatedly pressed and released, the contents C are not discharged. In this state, when the remaining state of the contents C is observed (see FIGS. 12A and 12B), the bottom b of the inner container 5, particularly the end bl of the bottom b of the portion where 襞 hi, h2 and h3 protrude, It is obvious that a lot of contents C remain in b2 and b3. It is clear that object C remains. Although there are differences depending on the shape and size of the inner container 5 and the outer container 6 and the performance of the airless pump 7, the residual rate of the contents C is usually determined when the weight of the first contents C is 100%. Is about 20%, even if it is carefully drawn out, it will be more than 10%.

[0008] The reason why the end 73a of the suction pipe 73 of the airless pump 7 is arranged so as to be approximately in the middle of the height of the inner container 5 as shown in FIG. 11 is described in detail in Patent Document 1 below. As shown in the figure, the content C is pumped out without any trouble even when the fluid container a with an airless pump is turned upside down. That is, when the fluid container a with an airless pump is inverted, the air in the space S near the mouth 51 of the inner container 5 naturally moves in the direction of the bottom surface 53. At this time, the end 73a of the suction pipe 73 is If it is extended to around 53, the airless pump 7 may inhale air, in which case the smooth pumping of the contents C is hindered. In order to avoid such a situation, in the fluid container a with an airless pump, the end 73a of the suction pipe 73 is usually arranged so as to be approximately in the middle of the height of the inner container 5 as shown in FIG. .

Patent Document 1: JP 2002-308364 A

Patent Document 2: JP 2005-350144 A

Disclosure of the invention

Problems to be solved by the invention

[0009] A conventional fluid container with an airless pump a has the above-described configuration, and when the contents are pumped to the limit (the state shown in FIGS. 12A and 12B), the inner container is in a contracted state. Discard 5 and install a new inner container 5 filled with contents C. That is, the outer container 6 is unscrewed from the umbrella 8 and the old inner container 5 is unscrewed from the cap 72 to The inner container 5 is screwed to the cap 72, and the outer container 6 is screwed to the umbrella 8 for use. In other words, the airless pump 7, the umbrella 8 and the outer container 6 are reuse (reusable) products, and the inner container 5 is made and distributed as a one-time disposable product.

[0010] However, about 10 to 20% of the content C still remains in the inner container 5 to be discarded, and it is important to discard the remaining contents together with the inner container 5 to conserve the resources of recent times. This is a wasteful story from the perspective of the trend and economic effects. Therefore, in such a fluid container with an airless pump, the remaining amount of the contents C is reduced as much as possible and set to a value of 5% or less, which is set as an object of the present invention. In the present invention, the contents of the fluid container with an airless pump are shampoo liquid, rinse liquid, face washing liquid, lotion, jewel, cold liquid, straight pipe, etc. In the case of pharmaceuticals and foods, fluid foods such as mayonnaise and ketchup, and dish detergent, disinfectant, bleach, and sanitary detergents are assumed. Means for solving the problem

[0011] The present invention has been made to solve the above-described problems, and provides the following means for solving the problems.

2. The fluid container with an airless pump according to Solution 1, wherein the maximum value of the thickness of the bottom surface is in the range of 2 to 4 times the thickness of the side surface of the inner container.

The solution from the lower end of the suction pipe of the airless pump to the lowest part inside the bottom of the inner container is in the range of 15 to 35% of the diameter of the inner container. Or a fluid container with an airless pump according to Solution 2.

The invention's effect

[0012] According to the invention of Solution 1 of the present invention, the overall shape of the inner container composed of the mouth portion, the side surface, and the bottom surface is substantially cylindrical, and the bottom surface is a curved surface that is convex downward and thicker than the side surface. As a result, the suction pipe of the air pump is stretched to the vicinity of the bottom surface! /, So when the inner container shrinks while creating three folds, the remaining content remains the most. The lower end of the spear is reduced to a minimum, and there is a significant reduction in contents remaining from the middle to the top of the three spears, and the suction pipe is extended to the vicinity of the bottom. The contents remaining at the bottom of the inner container are significantly reduced. As a result, we succeeded in reducing the remaining content to 3% or less by weight.

[0013] In the invention of Solution 1 of the present invention, when the entire fluid container with an airless pump is inverted as a result of the suction pipe extending to the vicinity of the bottom surface, the contents are pumped out. May still cause problems. However, the contents assumed by the fluid container with an airless pump according to the present invention are as described above, and the use of the fluid container with an airless pump according to the present invention in an inverted state is a normal use. Since it is impossible to think of it at first, priority is given to the goal of reducing the residual rate of contents, and the use in the inverted state, which is almost impossible, is not taken into consideration.

[0014] The invention of Solution 2 of the present invention is that the inner container is numerically limited to the ratio of the maximum thickness of the bottom surface to the thickness of the side surface, and this ratio is 2-4. . The appropriate value of this ratio is the force that varies depending on the material of the inner container and the ratio of the height and the diameter. As a result of manufacturing various containers and experimenting, the above-mentioned numerical limit range was derived. . By the way, if this ratio is below 2, i.e. if the maximum thickness of the bottom surface of the inner container is less than twice the thickness of the side surface, as the contents are pumped to near the limit, the bottom surface of the inner container The hemispherical shape of the material collapses, and an unnecessary space is formed around the bottom surface. The content remains here and the content remaining rate increases. If the above ratio exceeds 4, that is, if the maximum thickness of the bottom surface of the inner container exceeds 4 times the thickness of the side surface, the joint between the bottom surface of the inner container and the side surface will not shrink. Eventually, the remaining contents are conspicuous around the bottom of the inner container, and the remaining ratio of the contents as a whole increases. Therefore, the inner container Although it depends on the material and the ratio of the height and the diameter, if the appropriate value of the above ratio is further narrowed, it is considered that 2.5 to 3.5, that is, around 3 is appropriate.

[0015] The invention of Solution 3 of the present invention is such that the numerical value is limited to the distance from the lower end portion of the suction pipe of the airless pump to the lowest inner portion of the bottom surface. That is, it is 15 to 35% of the width of the inner container. The appropriate value for this value is the force that varies depending on the material of the inner container and the ratio between the height and the diameter. It is. By the way, if this value falls below 15%, the lower end of the suction pipe of the airless pump comes into contact with the bottom surface of the inner container as the contents are pumped to the limit, and further presses the bottom surface to bite into the bottom surface. The hemispherical shape of the bottom surface collapses and an extra corner is formed, resulting in an increase in the content remaining rate. That is, as the inner container contracts, the bottom surface of the inner container rises, which is the result.

[0016] When the above value exceeds 35%, when the contents decrease and the inner container contracts, the amount of the contents remaining at the lower end of the suction pipe of the airless pump increases. After all, the residual rate of contents will increase. Although it depends on the material of the inner container and the ratio between the height and the diameter, if this value is further reduced, 20-30%, that is, around 25% may be more appropriate.

Brief Description of Drawings

FIG. 1 is a right side view of a fluid container with an airless pump according to a first embodiment of the present invention.

FIG. 2 is a longitudinal sectional view seen from the right side of the fluid container with an airless pump according to the first embodiment of the present invention.

FIG. 3 is a longitudinal sectional view seen from the right side of the fluid container with an airless pump according to the first embodiment of the present invention when the contents are pumped to the limit.

FIG. 4 is a right side view of the fluid container with an airless pump according to the first embodiment of the present invention in a state where contents are pumped to the limit.

FIG. 5A is a cross-sectional view taken along line AA in FIG.

FIG. 5B is a sectional view taken along line BB in FIG. 5A.

[Fig. 6] In the fluid container with an airless pump of Example 1 of the present invention, the outer container and the umbrella are temporarily connected. It is the external appearance perspective view shown by the phantom line.

7] FIG. 7 is an external perspective view showing the outer container and the umbrella portion with phantom lines in the state where the contents are pumped out to the limit in the fluid container with an airless pump according to the first embodiment of the present invention.

FIG. 8 is an explanatory diagram showing an assembly configuration of an airless pump and an inner container in the fluid container with an airless pump according to the first embodiment of the present invention.

FIG. 9] A longitudinal sectional view in which a part of the inner container of the fluid container with an airless pump according to the first embodiment of the present invention is omitted.

FIG. 10A] is a longitudinal sectional view of an umbrella portion of the fluid container with an airless pump according to the first embodiment of the present invention.

FIG. 10B is a bottom view of the umbrella portion of the fluid container with an airless pump according to the first embodiment of the present invention. 10C] An external perspective view of the umbrella portion of the fluid container with an airless pump according to the first embodiment of the present invention as viewed from the bottom side.

11] A vertical sectional view of an example of a conventional fluid container with an airless pump as seen from the right side. 12A] is a cross-sectional view of an example of a conventional fluid container with an airless pump.

FIG. 12B is a cross-sectional view taken along the line CC in FIG. 12A.

13] This is an explanatory diagram showing the contracted state of the inner container when the contents of the conventional fluid container with an airless pump are pumped out to the limit without the outer container. Show.

14] A longitudinal sectional view of the fluid container with an airless pump according to the second embodiment of the present invention as viewed from the right side.

Explanation of symbols

1 Inner container

11 mouth

11a Reduced diameter part

l ib connection

11c body

l id convex part

l ie Convex

12 sides Bottom Outer container Side a Top end

Bottom Airless pump Airless pump Neck a Discharge b Kanoko 1 Neck

1 Discharge port 2 Trigger

Main unit 0 Main unit

End of suction pipe a

Cap Umbrella Main body Rim a Recess b Recess c Recess d Recess

Inner container mouth 52 Side

53 Bottom

6 Outer container

7 é Respon

71 neck

71a Discharge port

72 cap

73 Suction tube

73a end

8 Umbrella

51 mouth

52 Side

53 Bottom

A Fluid container with less pump

AA Responsible fluid container

B Bottom

Bl end

B2 end

B3 end

C Contents

Dl diameter

D2 diameter

D3 distance

HI

H2

H3 襞

Hla end

H2a end H3a end

HR hole

Rl ridge

R2 ridge

R3 ridge

R4 ridge

S space

S1 gap

SP spring

a Fluid container with airless pump

b Bottom

bl end

b2 end

b3 end

dl thickness

d2 thickness

d3 thickness

hi 襞

h 'l 襞

hi a end

h2 襞

h'2 襞

h2a end

h3 襞

h3a end

BEST MODE FOR CARRYING OUT THE INVENTION

A mode for carrying out the present invention will be described in detail with reference to the drawings. 1 to 10 relate to the first embodiment of the present invention, and FIG. 14 relates to the second embodiment of the present invention. Is.

Example 1

[0020] <Configuration of Example 1>

The fluid container A with an airless pump according to the first embodiment of the present invention has a shape as shown in FIG. 1 (right side view) or FIG. 2 (longitudinal sectional view), and airless in the mouth 11 (see FIG. 2). The pump 3 is mounted and has a double structure of an inner container 1 made of a soft material containing the contents C which is a liquid or a sol-like substance and an outer container 2 made of a hard material containing the inner container 1. The shape of the inner container 1 is a substantially cylindrical shape, and the bottom surface 13 is curved downward (part of a spherical surface) and is thicker than the side surface 12. The suction pipe 33 of the airless pump 3 is located near the bottom surface 13. It has been stretched to

The inner container 1 is made of transparent polyethylene, and as shown in FIG. 8, a mouth portion 11, a side surface 12, and a bottom surface 13 that forms a part of a spherical surface are formed as a body. As shown in FIG. 9, the side surface 12 has a cylindrical shape with a diameter D1, and the upper end portion continues to the mouth portion 11. As shown in FIGS. 8 and 9, the mouth 11 has a diameter-reduced portion l la whose diameter is reduced as the lower end has a diameter D1 and the upper end is directed upward, and a body having a diameter D2, which is about half of the diameter D1. The part 1 lc, the main body part 1 lc, and the connecting part l ib force connecting the reduced diameter part 11a, and the reduced diameter part l la, the connecting part l lb, and the main body part 11c are all configured as one body. Force that main body part 11c has spiral protrusion R1 protruding integrally with main body part 11c This protrusion R1 is a spiral protrusion that protrudes inside cap 34 of airless pump 3 (Fig. (Not shown) has a role of screwing the mouth portion 11 to the cap 34, whereby the airless pump 3 is airtightly attached to the inner container 1. In addition, the connecting portion l ib has a plate-like convex portion l ld, l ie projecting integrally with the connecting portion l ib. The convex portion l ld, 1 le is the umbrella portion 4 (see FIG. 10b). The inner container 1 and the umbrella portion are engaged with the recesses 43a, 43c or 43b, 43d among the recesses 43a to 43d that are provided around the rim 43 on the periphery of the circular hole HR at intervals of 90 °. 4 plays a role of fixing so as not to rotate relatively

Yes

As shown in FIG. 9, the thickness dl of the reduced diameter portion 11a of the mouth portion 11 of the inner container 1 is a force S that is approximately three times the thickness d 2 of the side surface 12, this This is so that even if the side surface 12 contracts, the reduced diameter portion 11a is not deformed so much. Similarly, the thickness d3 of the bottom surface 13 of the inner container 1 The maximum value is a force that is about 3 times the thickness d2 of the side surface 12. This also means that even if the side surface 12 contracts, the bottom surface 13 does not deform so much, and a part of the spherical surface that protrudes downward This is a configuration that can maintain the shape of.

[0023] The outer container 2 is made of a transparent acrylic resin, and as shown in Fig. 2, a cylindrical side surface 21 and a disk-shaped bottom surface 22 that are slightly enlarged in diameter as they go upward are formed as a body. A spiral protrusion R2 is formed integrally with the side surface 21 at the upper end portion 21a of the side surface 21. The ridge R2 engages with the ridge R3 having a part of a spiral projecting on the inner surface of the flange portion 42 of the umbrella portion 4 (see FIGS. 10A to 10C), which will be described later. Is screwed onto the upper end 21a of the outer container 2. The diameter of the outer container 2 is slightly larger than the diameter D1 of the inner container 1, and the inner container 1 can be stored in a state of being separated from the inner surface of the outer container 2 with a slight gap S1. Has been. The lower end portion of the bottom surface 13 of the inner container 1 is brought into contact with the bottom surface 22 of the outer container 2.

[0024] Since the airless pump 3 is a well-known airless pump, a detailed description of the internal structure is omitted, and only points that need to be described in relation to other configurations are described. As shown in FIG. 8, the airless pump 3 includes a neck portion 31 having a discharge port 31a, a main body portion 32 connected to the neck portion 31, a cylindrical suction pipe 33 connected to the lower end of the main body portion 32, and It is composed of a cap 34 provided around the joint portion of the main body 32 and the neck 31. FIG. 1 shows a state where the neck 31 is locked, and FIG. 2 shows a state where the neck 31 is unlocked. To lock the neck 31, the entire neck 31 is pushed down and the spiral ridge R4 is engaged and screwed into a spiral ridge (not shown) in the cover 31b disposed on the top of the cap 34. Is done. SP is a spring built in the main body 32, and when the neck 31 is pushed down, it restores the neck 31 to its original position. It is possible to use springs that are stronger than the springs used in conventional airless pumps.

As shown in FIG. 2, the suction pipe 33 is disposed at the center of the cylindrical shape of the inner container 1, and the end 33 a of the suction pipe 33 is positioned near the bottom surface 13 of the inner container 1. Yes. End part 33a is partly notched.If the distance from the notched part of end part 33a to the lowest part of bottom surface 13 is D3, in fluid container A with an airless pump of Example 1, The distance D3 is 25% of the diameter D1 of the inner container 1. This distance D3 is a force that varies depending on the material of the inner container 1 and the ratio between the height and the diameter. Generally, the distance D3 is within the range of 15 to 35% of the diameter D1, and more suitably within the range of 20 to 30% of the diameter D1. Is desirable.

[0026] As shown in FIG. 10A to FIG. 10C, the umbrella part 4 is entirely umbrella-shaped, and has a main body part 41 that shrinks in accordance with the upward force, and is suspended downward from the lower end of the main body part 41. A rim portion 43 projecting in a ring shape from the upper ends of the flange portion 42 and the main body portion 41 is formed as a body, and has a circular hole HR surrounded by the rim portion 43 at the top portion. In addition, recesses 43a, 43b, 43c, 43d are circumferentially provided at 90 ° intervals in the circumferential direction on the bottom surface of the rim portion 43, and a protrusion having a part of a spiral shape is formed on the inner periphery of the flange portion 42. R3 and R3 are projected!

[0027] As shown in Fig. 2, the umbrella portion 4 has a circular hole HR through which the body portion 32 of the airless pump 3 is passed, and the connection portion of the mouth portion 11 of the inner container 1 1 lb and the airless pump 3 The rim portion 43 of the umbrella portion 4 is fixed between the lower end surface of the cap 34 and the cap 34 so as to be fixed. At this time, the convex portions 1 ld and 1 le (see FIG. 8) of the mouth portion 11 of the inner container 1 are fitted into the concave portions 43a and 43c of the rim portion 43 of the umbrella portion 4 (there are 43! And 43d). As a result, the relative rotation of the umbrella part 4 and the inner container 1 is prevented. Further, as described above, the mouth 11 of the inner container 1 is screwed and fixed to the cap 34 of the airless pump 3, and the flange part 42 of the umbrella 4 is screwed and fixed to the upper end 21a of the outer container 2. In the fluid container A with the airless pump of the first embodiment, all members except the neck 31 of the airless pump 3 are fixed to the body, and relative rotation between the members is prevented. Only the neck 31 of the airless pump 3 is configured to be rotatable with respect to the main body 32.

Yes

As shown in FIG. 1, the fluid container A with an airless pump of Example 1 is initially in a state where the neck 31 of the airless pump 3 is locked and the contents C is filled in the inner container 1 (see FIG. (Not shown). When the user rotates the neck 31 leftward in plan view to release the mouth, the neck 31 is extended upward by the action of the spring SP (see FIG. 8), and the state shown in FIG. Become. Figure 6 shows the appearance of the inner container in this state.

In this state, when the press and release of the neck 31 of the airless pump 3 are repeated, the content C is sucked from the suction pipe 33 and discharged from the discharge port 31a. If you repeat use in this way, As container C is pumped out, inner container 1 contracts, and when pumping is done to the limit, the state shown in Figs. 3 and 7 is reached. In other words, as shown in FIGS. The state comes into contact with the inner surface of the outer container 2.

[0030] When the inner container 1 has a shape as shown in FIGS. 5A and 5B, it becomes difficult to pump the contents C beyond this. That is, no matter how many times the neck 31 is pressed and released, the contents are not discharged. In this state, when the remaining state of the contents C is observed, a slight amount of the contents C is found at the bottom B of the inner container 1 and the ends B, B2 and B3 of the bottom B where the ridges Hl, H2 and H3 protrude. You can see it remaining.

[0031] When this state is compared with the remaining state in the conventional fluid container a with an airless pump (see FIGS. 12A and 12B), the difference is clear. That is, in the fluid container A with an airless pump of Example 1, the bottom surface 13 of the inner container 1 has a downwardly convex curved surface (a part of a spherical surface), so that the ends Bl, B2, and B3 of the bottom B are Since there is no large overhanging space like the ends bl, b2 and b3 of the bottom b of the conventional fluid container with airless pump a, the content C remaining in that part is very small. In addition, in the conventional fluid container with airless pump a, the strongly protruding end parts bl, b2, b3 also affect the formation of 襞 hi, h2, h3 on the top, so that 襞 hl, h2, There is a tendency to form a relatively large space in the ends hla, h2a, h3a (see Fig. 12A) of h3, and thus a large amount of content C remains in this part. On the other hand, in the fluid container A with an airless pump of Example 1, the overhang of the ends Bl, B2, B3 is weak, and as a result, the ends Hla, H2a, H3a of 襞 H1, H2, H3 (see FIG. 5A) ) The space formed in the space will be small and inevitably a small amount of contents will remain here. Further, the contents remaining in the space below the end 73a of the suction pipe 73, which can be noticeably seen in the conventional fluid container a with airless pump (see FIG. 12B), are the fluid with airless pump of Example 1. It cannot be overlooked that container A (see Fig. 5A) is nearly zero.

[0032] Therefore, the conventional fluid container with airless pump a! /, Although there are differences depending on the shape and size of the inner container 5 and outer container 6, and the performance of the airless pump 7, The residual rate may be 10 to 20% when the weight of the initial contents C is 100%. As described above, when the remaining amount of the content C was measured in the fluid container A with an airless pump of Example 1, it was pumped out to the limit when the initial weight of the content C was 100%. There was a marked improvement in the remaining amount of content C, 2.6%.

[0033] Incidentally, various data in this measurement were as follows.

Inner container 1 diameter D 1 = 8 Omm

Distance from end 33a of suction pipe 33 to lowest point of bottom 13 D3 = 20mm

Contents C is a hair shampoo.

Empty weight of fluid container A with airless pump = 275g

Total weight including fluid container A with airless pump with contents C filled (total weight before use) = 1200g

Total weight including fluid container A with airless pump with contents C pumped to the limit (total weight after use) = 299g

From the above, when the weight of the pumped contents C is obtained,

1200g- 299g = 901g

On the other hand, the weight of the contents C filled before use is

1200g- 275g = 925g

Therefore, the weight of the contents C remaining after use is

925g- 901g = 24g

Therefore, the ratio of the remaining content C is

24g ÷ 925g = 0. 025945945 ……

In other words, it is about 2.6%, which is about one-fourth to one-eighth compared with the remaining ratio of 10-20% in the conventional fluid container with airless pump a. As described above, the fluid container A with an airless pump of Example 1 has an excellent effect of dramatically reducing the remaining ratio of the contents as compared with the conventional fluid container a with an airless pump.

Example 2

[0034] As shown in Fig. 14, the fluid container AA with an airless pump according to the second embodiment includes, among the configurations of the fluid container A with an airless pump according to the first embodiment, an inner container 1, an outer container 2, an umbrella part 4, and The air pipe 3 of the airless pump 3 with the suction pipe 33 and cap 34 of the air pump 3 kept unchanged. The structure of the body part 32 and the neck part 31 is replaced with a main body part 320 and a neck part 310 to obtain an airless pump 30. The airless pump 30 is a so-called gun type, and the force by which the contents C are pumped from the discharge port 311 by repeatedly pulling and releasing the trigger 312. The airless pump 30 itself Since it is a widely used technique !, detailed description is omitted. Note that the action of the fluid container AA with airless pump is almost the same as the action of the fluid container A with airless pump A in Example 1. The airless pump 30 has a higher discharge force than the airless pump 3. It is possible to further reduce the residual ratio of product C. That is, a strong spring (not shown) is housed in the main body 320, and the neck 310 is a gun type that can amplify the pressing force to the spring in order to secure the force to compress the spring. is there.

Industrial applicability

As described above, the fluid container with an airless pump of the present invention succeeded in drastically reducing the remaining ratio of the contents as compared with the conventional fluid container with an airless pump. In other words, it is useful for protecting resources and improving economic efficiency, and is widely used in various fields where fluid containers with airless pumps are used, in the hairdressing and beauty industry, household sanitary fields, food container fields, etc. Expected to be. Even if the shape of the airless pump is not a gun type, it is possible to further reduce the residual ratio of the contents by making the spring built in the main body of the airless pump strong. In this case, the force S that requires a large force by pressing the neck of the airless pump S, the case where the fluid container with the airless pump of the present invention is used by professional barbers and hairdressers in the barber and beauty industry, It is also possible to provide springs that are stronger than those for gardens and provide them as so-called “professional” products.

Claims

The scope of the claims

[1] An airless pump is attached to the mouth to form a double structure of an inner container made of a soft material that contains the liquid or sol-like contents and an outer container made of a hard material that contains the inner container. ! / In a fluid container with an airless pump! / The overall shape of the inner container composed of the mouth, side, and bottom is approximately cylindrical, and the bottom is convex with a curved surface that is thicker than the side. A fluid container with an airless pump, characterized in that the suction pipe of the airless pump is formed to extend near the bottom!

[2] The fluid container with an airless pump according to claim 1, wherein, in the inner container, the maximum thickness of the bottom surface is in the range of 2 to 4 times the thickness of the side surface.

[3] The distance from the lower end of the suction pipe of the airless pump to the lowest inner part of the bottom surface of the inner container is in the range of 15 to 35% of the diameter of the inner container. 3. A fluid container with an airless pump according to claim 2.