Liquid container

Abstract

To provide a liquid-received container allowed to discharge liquid by simple operation and inhibit liquid from leaking out by an unexpected external force.SOLUTION: A liquid-received container 1 in the present invention comprises an accommodation part 24 that is allowed to receive liquid 5 therein and a guard part 28 that covers part of the accommodation part 24. At least part of the accommodation part 24 is formed by a small-pored elastomer sheet 3. The small-pored elastomer sheet 3 has a plurality of small pores P, so that the small pores P can be opened and closed by expansion and contraction. The liquid-received container 1 is allowed to open the small pores P and discharge liquid 5 by pressurizing the small-pored elastomer sheet 3 through a press-operating part 21 not covered by the guard part 28.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a liquid storage container having a storage section capable of holding liquid inside. [Background technology]

[0002] Articles impregnated with or containing liquids containing antibacterial agents or functional materials are used in the field of hygiene products. For example, Patent Document 1 discloses a stretch-active article used for applying liquid to a part of the body. The stretch-active article described in Patent Document 1 contains a liquid between an upper layer and a lower layer that are joined together, and the upper layer is elastic, and by stretching the upper layer in one direction, the thinned portion of the upper layer is torn, forming a flow channel hole.

[0003] Patent Document 2 discloses a multilayer liquid supply device comprising a porous reservoir and an adjacent liquid-permeable support layer. This liquid-permeable support layer is an elastic perforated membrane having minute holes, which allow the liquid or gel held by the porous reservoir to be discharged to the outside. Patent Document 3 discloses a supply device having a porous storage section for holding liquid and an elastic liquid supply contact layer communicating with it, wherein slits or pores are formed in the contact layer. [Prior art documents] [Patent Documents]

[0004] [Patent Document 1] U.S. Patent Application Publication No. 2007 / 0049894 [Patent Document 2] Patent No. 5600000 [Patent Document 3] Special Publication No. 2015-522306 [Overview of the project] [Problems that the invention aims to solve]

[0005] The stretch-activated articles and supply devices described in Patent Documents 1 to 3 allow liquids held inside to be discharged to the outside by pressing on a portion of an elastic sheet that has slits or pores formed in it, causing the sheet to stretch and the slits or pores to open. In this way, the stretch-activated articles and supply devices can easily discharge liquids, but on the other hand, there is a risk of liquid leaking out due to unexpected external force. Patent Documents 1 to 3 do not disclose any technology to prevent unintended liquid leakage.

[0006] The present invention relates to providing a liquid storage container that allows liquid to be discharged with simple operation and that can prevent liquid from leaking out due to unexpected external force. [Means for solving the problem]

[0007] This invention relates to a liquid storage container. Preferably, the liquid container has a storage section capable of holding liquid inside and a guard section that covers a part of the storage section. Preferably, at least a portion of the receiving portion is formed from a small-porous elastomer sheet. Preferably, the aforementioned perforated elastomer sheet has a plurality of small holes, and these small holes can be opened and closed by expansion and contraction. Preferably, the liquid container is designed so that the small holes in the small-perforated elastomer sheet are opened and the liquid is discharged by applying pressure to the small-perforated elastomer sheet through a pressing operation part that is not covered by the guard portion. [Effects of the Invention]

[0008] The liquid storage container of the present invention allows for easy discharge of liquid and prevents leakage due to unexpected external forces. [Brief explanation of the drawing]

[0009] [Figure 1] Figure 1 is a perspective view showing one embodiment of a liquid storage container according to the present invention. [Figure 2]Figure 2 is a cross-sectional view of the liquid storage container at the position of the pressing operation part shown in Figure 1. [Figure 3] Figure 3 is a plan view (a) showing the small-hole elastomer sheet shown in Figure 1, and enlarged perspective views and enlarged cross-sectional views (b) schematically showing the closed state of the small holes in the sheet. [Figure 4] Figure 4 is a plan view (a) showing the small-hole elastomer sheet with the small holes in an open state, and enlarged perspective views and enlarged cross-sectional views (b) schematically showing the open state of the small holes in the sheet. [Figure 5] Figure 5 is a cross-sectional view (a) and an enlarged cross-sectional view (b) showing the usage state of the liquid storage container shown in Figure 1. [Figure 6] Figures 6(a) to (b) are plan views showing the shape of the pressing operation part according to the present invention. [Figure 7] Figures 7(a) to (c) are diagrams corresponding to Figure 2 showing another embodiment of the liquid storage container according to the present invention. [Figure 8] Figure 8 is a diagram corresponding to Figure 2 showing yet another embodiment of the liquid storage container according to the present invention. [Figure 9] Figure 9 is a plan view showing the bag body shown in Figure 8. [Figure 10] Figure 10 is a perspective view (a) and a cross-sectional view (b) showing yet another embodiment of the liquid storage container according to the present invention. [Figure 11] Figure 11 is a cross-sectional view (a) showing yet another embodiment of the liquid storage container according to the present invention, and an enlarged cross-sectional view (b) showing the fixing position of the small-hole elastomer sheet. [Figure 12] Figure 12 is a cross-sectional view showing an embodiment of the manufacturing method of the small-hole elastomer sheet according to the present invention. [Figure 13] Figure 13 is a plan view of the raw sheet after being introduced between the pair of rolls shown in Figure 12. [Figure 14] Figure 14 is a cross-sectional view showing another embodiment of the manufacturing method of the small-hole elastomer sheet according to the present invention.

Embodiments for Carrying Out the Invention

[0010] The present invention will now be described below with reference to the drawings, based on preferred embodiments thereof. Figures 1 and 2 show one embodiment of the liquid container of the present invention. For convenience of explanation, the small holes P, which will be described later, are not shown in Figures 1 and 2. The liquid container 1 of this embodiment comprises a container body 20 having a hollow hexahedral shape. The container body 20 is composed of a cylindrical peripheral wall portion 27, a top portion 22 with an opening (pressing operation portion 21) formed therein, and a bottom portion 23 (see Figure 1). The top portion 22 is located on one opening side of the peripheral wall portion 27, and the bottom portion 23 closes the other opening of the peripheral wall portion 27.

[0011] The peripheral wall portion 27 has a rectangular tubular shape with a square horizontal cross-section and is formed by plate-like members surrounding it on all four sides. These plate-like members are rectangular in shape and size. The top portion 22 and bottom portion 23 of the container body 20 are plate-like members having the same shape and size as squares, except for the opening (pressing operation portion 21), and are arranged opposite each other in the height direction Z of the liquid storage container 1. From the viewpoint of further suppressing unintended leakage of liquid 5, it is preferable that the material forming the container body 20 is rigid. For example, the material of the container body 20 can be an inorganic material such as metal or glass, or a synthetic resin, as described later, and the container body 20 can be made rigid.

[0012] The top surface portion 22 of this embodiment has a guard portion 28 and a pressing operation portion 21 defined by the guard portion 28 (see Figures 1 and 2). The pressing operation portion 21 is an opening that penetrates the top surface portion 22, and the periphery of the opening is formed by the guard portion 28. The pressing operation portion 21 of this embodiment is formed in the center of the top surface portion 22 and has a square shape with rounded corners in plan view. That is, in plan view, the pressing operation portion 21 is formed inside the annular guard portion 28.

[0013] The liquid container 1 has a storage section 24 inside that can hold liquid 5 (see Figure 2). In this embodiment, the liquid container 1 has the storage section 24 inside, that is, in the space defined by the top surface 22, the bottom surface 23 and the peripheral wall 27. The housing section 24 is partially covered by the guard section 28. The housing section 24 also has a portion that is not covered by the guard section 28, i.e., a portion that overlaps with the pressing operation section 21. In this embodiment, the housing section 24 on the top surface 22 side is covered around the periphery by the guard section 28 and overlaps with the pressing operation section 21 in its central portion. In this embodiment, the housing section 24 is exposed on the top surface 22 at the position where it overlaps with the pressing operation section 21.

[0014] The storage section 24 is capable of containing liquid 5 inside. At least a portion of the storage section 24 is formed from a perforated elastomer sheet 3. The storage section 24 in this embodiment has a perforated elastomer sheet 3, described later, on the top surface 22 side, and is formed by the perforated elastomer sheet 3, the peripheral wall 27, and the bottom surface 23. In the storage section 24 in this embodiment, the perforated elastomer sheet 3 is arranged on the inner surface side of the top surface 22.

[0015] The perforated elastomer sheet 3 is a sheet that is stretchable and has multiple small holes P. Figures 3(a) and (b) show the small holes P in a closed state, and Figures 4(a) and (b) show the small holes P in an open state. "Elasticity" is the property of stretching when pulled in a certain direction and contracting when that tension is released. The closer the length after contraction is to the length before stretching, the higher the elasticity. Furthermore, "having elasticity" means that the residual strain (%) measured according to the following [Method for measuring residual strain] is less than 105%.

[0016] [Method for measuring residual strain] Cut a 25mm x 70mm piece from the perforated elastomer sheet 3 to use as a sample piece. Next, attach the sample piece to the chuck of a tensile testing machine (for example, a Shimadzu Corporation model "AUTOGRAPH AG-X"). If the shape of the perforation P is elongated in one direction, attach the sample between the chucks so that the direction perpendicular to the longitudinal direction of the perforation P is the tensile direction. Also, attach the sample piece between the chucks so that its longitudinal direction coincides with the tensile direction. The distance between the chucks is 50mm. This distance between the chucks becomes the natural length a before elongation. Next, elongate the sample piece between the chucks at a speed of 50mm / min until the distance between the chucks becomes 55mm, and then return it at a speed of 50mm / min until the tensile strength becomes 0N. Measure the distance b between the chucks when the tensile strength is returned to 0N, and measure the ratio (%) of this distance b to the natural length a (50mm). Repeat the measurement three times, and the average value of these measurements is taken as the residual strain (%). The greater the residual strain (%), the smaller the shrinkage force; and the smaller the residual strain (%), the greater the shrinkage force.

[0017] The small holes P in the perforated elastomer sheet 3 are through holes that penetrate the sheet 3. The liquid container 1 is designed so that the small holes P can be opened and closed by the expansion and contraction of the perforated elastomer sheet 3. This configuration is described in detail below. In the perforated elastomer sheet 3, the openings of the small holes P are closed (closed state) when no tensile stress is acting on the sheet (natural state) [see Figures 3(a) and (b)]. This is because, in the perforated elastomer sheet 3 in its natural state, the parts that form the periphery of the small holes P (peripheral edges) are in close contact with each other. The natural state is the state of the perforated elastomer sheet 3 before elongation, when no external force is applied to the sheet 3. On the other hand, when the perforated elastomer sheet 3 is stretched in the expansion and contraction direction, the openings of the small holes P become open (open state) [see Figures 4(a) and (b)]. This is because the perforated elastomer sheet 3 deforms due to stretching, and the contact between the parts (peripheral edges) that form the periphery of the small holes P in the sheet 3 is released, causing these parts to separate. The greater the degree of stretching of the perforated elastomer sheet 3, the larger the openings of the small holes P become. When the stretched state of the perforated elastomer sheet 3 is released, the openings of the small holes P return to a closed state.

[0018] In this embodiment, the liquid container 1 allows the opening and closing of the small holes P to be controlled by the expansion and contraction of the small-hole elastomer sheet 3, so that the liquid 5 contained in the container 24 can be discharged to the outside through the small holes P. For example, as shown in Figures 5(a) and (b), by pressing (pressuring) the small-hole elastomer sheet 3 through the pressing operation part 21, which is an opening in the top surface part 22, the small-hole elastomer sheet 3 becomes extended, and the small holes P can be opened. This allows the liquid 5 in the container 24 to be discharged to the outside through the small holes P. Furthermore, when the pressure is released after the liquid 5 has been discharged through the small holes P, the inside of the container 24 may become a negative pressure. With this configuration, in the process of releasing the extended state of the small-hole elastomer sheet 3 and returning the opening of the small holes P to a closed state, the liquid 5 remaining on the surface of the small-hole elastomer sheet 3 can be efficiently recovered through the small holes P. In this embodiment, the liquid container 1 allows for the discharge of liquid 5 to the outside through a simple operation of pressurizing the perforated elastomer sheet 3 via the pressing operation part 21 (see Figure 5). On the other hand, since a part of the container part 24 is covered by the guard part 28, it is possible to effectively suppress the pressurization of the perforated elastomer sheet 3 by unexpected external forces. For example, even if the liquid container 1 is dropped, the perforated elastomer sheet 3 is located on the inner surface side of the top part 22, so the sheet 3 is prevented from being hit by the impact of the fall, and leakage of liquid 5 due to the impact is suppressed. Thus, the liquid container 1 of this embodiment allows for the discharge of liquid through a simple operation and can suppress the leakage of liquid 5 due to unexpected external forces. Furthermore, when another object is placed on top of the liquid container 1 (on the top surface 22 side), the pressing operation part 21 is protected from pressure by the other object by the guard part 28, thus preventing the liquid 5 from leaking out. In this way, the liquid container 1 of this embodiment can be stored or transported with the container or other objects stacked on top of it, thus offering excellent storage and transport efficiency.

[0019] From the viewpoint of achieving a better balance between preventing leakage and draining liquid 5, the durohardness of the porous elastomer sheet 3 is preferably less than A80, more preferably A20 to A70, and even more preferably A30 to A55. By setting the durohardness within this range, the porous elastomer sheet 3 becomes more easily deformed by pressure, thereby further improving the drainage of liquid 5. The durohardness shall be measured according to JIS K6253-3 (2012 edition) using the following method. A known durometer shall be used for the measurement of durohardness. First, a 50mm x 50mm sample shall be cut from the small-perforated elastomer sheet 3. Next, the durohardness shall be measured using a durometer and an automatic constant-pressure load device. The durometer shall be of type A or type D. Measurements shall be taken at five different locations on the sample, and the median of these measurements shall be taken as the durohardness value. The measurement points shall be located at least 12mm away from the periphery of the sample, and the distance between measurement points shall be at least 6mm. If the sheet thickness of the sample is less than 6mm, multiple samples shall be stacked to make the total thickness 6mm or more before measurement. The measurement shall be performed under conditions of a temperature of 23±2℃ and a humidity of 50±5%.

[0020] From the viewpoint of achieving a better balance between leak prevention and discharge of liquid 5, the thickness of the porous elastomer sheet 3 is preferably 100 μm or more and less than 1000 μm, more preferably 200 μm or more and 500 μm or less, and even more preferably 200 μm or more and 400 μm or less. When the thickness and hardness of the perforated elastomer sheet 3 are within this range, leakage of the liquid 5 can be suppressed even when the top surface 22 is oriented vertically downward. From the viewpoint of suppressing the evaporation of the liquid 5, it is desirable for the thickness to be as thick as possible without hindering deformation during liquid discharge. The thickness of the perforated elastomer sheet 3 can be measured according to Method A of JIS K6250-3 (2019 edition). Specifically, a cylindrical measuring terminal (indenter) with a diameter of 5 mm is used to measure the thickness while applying a pressure of 22 ± 5 kPa (44 gf) to the parts of the sample other than the perforations P. This measurement is performed at three different locations, and the average value of these measurements is taken as the thickness of the perforated elastomer sheet 3.

[0021] The shape of the small holes P in the small-porous elastomer sheet 3 is not particularly limited and may be circular or elliptical holes, or slits extending in one direction. Such shapes are the shapes of the small holes P when they are open.

[0022] From the viewpoint of achieving a better balance between preventing leakage and draining liquid 5, the length of the small holes P when open is preferably 2.0 mm or less. From the viewpoint of achieving a better balance between draining and retaining liquid 5, the length of the small holes P when open is preferably 0.3 mm or more and 2.0 mm or less, more preferably 0.5 mm or more and 1.5 mm or less, and even more preferably 0.8 mm or more and 1.0 mm or less. The length of the small hole P when it is open is the maximum span of the small hole P when the small-hole elastomer sheet 3 is stretched by 10% in its expansion and contraction direction, i.e., when it is 110% of its length before stretching. The length of the small hole P when it is open can be adjusted by the dimensions of the perforating projection used to form the small hole P. The length of the small holes P when they are open can be adjusted by the dimensions of the drilling pin or blade used to form the small holes P. The small-hole elastomer sheet 3 may have small holes P of the same size, or it may have small holes P of different sizes. In this case, it is preferable that the length of some of the small holes P when they are open is within the above range, and it is more preferable that the length of all of the small holes P when they are open is within the above range.

[0023] From the viewpoint of further improving the liquid retention capacity of the liquid container 1, the porous elastomer sheet 3 has a tensile strength of preferably 3N / 25mm to 40N / 25mm, and more preferably 5N / 25mm to 25N / 25mm, when stretched to 110%.

[0024] [Method for measuring tensile strength at 110% elongation] The tensile strength of the perforated elastomer sheet 3 at 110% elongation is measured by the following method. First, a sample piece cut from the perforated elastomer sheet 3 is attached to the chuck of a tensile testing machine using the same method as described in [Method for measuring residual strain]. The distance between the chucks (natural length a) is set to 50 mm. Next, the tensile strength is measured when the sample between the chucks is stretched at a speed of 500 mm / min to 110% elongation (until the distance between the chucks becomes 55 mm). This measurement is repeated three times, and the average value is taken as the tensile strength at 110% elongation.

[0025] The liquid container 1 of this embodiment has multiple rows of small holes P1 in the small-hole elastomer sheet 3, where multiple small holes P are arranged in one direction (see Figures 3(a) and 4(a)). In such small-hole rows P1, the direction of extension Y of the row P1 coincides with the longitudinal direction of the small holes P. The direction X perpendicular to the direction of extension Y of the small-hole rows P1 is also simply called the "orthogonal direction X". Multiple rows of small holes P1 are arranged along the orthogonal direction X, and the position of the small holes P between adjacent small-hole rows P1 is shifted by half a pitch in the direction of extension Y. That is, in the small-hole elastomer sheet 3 of this embodiment, multiple small holes P are arranged in a staggered pattern. With this configuration, the spacing between the small holes P can be made wider, so that the liquid 5 can be discharged over a wider area, and leakage of the liquid 5 can be further suppressed. The arrangement of the small holes P is staggered. Alternatively, the positions of the small holes P in the extension direction Y between adjacent rows of small holes P1 may coincide.

[0026] From the viewpoint of achieving a better balance between leak prevention and discharge of liquid 5, the number of small pores P per unit area of ​​the small-pore elastomer sheet 3 when stretched to 110% is preferably 1 pore / cm². 2 More than 60 pieces / cm2 More preferably 6 pieces / cm 2 More than 20 pieces / cm 2 The following applies:

[0027] [Method for measuring the number of small pores P per unit area] A 50mm square sample piece is cut from the perforated elastomer sheet 3. If the sheet from which the sample piece is cut contains both areas with multiple perforations P and areas without perforations P, the sample piece is cut from the area with multiple perforations P. Next, the square sample piece is stretched by 110% in the direction along one of the opposite sides. That is, the sample piece is stretched so that its length after stretching is 110% (55mm) of its length before stretching. If the shape of the perforations P is elongated in one direction, the sample piece is stretched so that the direction perpendicular to the longitudinal direction of the perforations P is the tensile direction. Then, the number of perforations P in the sample piece is counted, and the area of ​​the sample piece after 110% stretching is calculated from the number of perforations P and the area of ​​the sample piece at 100% stretching. 2 The number of small pores P per unit area is calculated. This measurement is performed at three arbitrary locations on the small-pore elastomer sheet 3, and the average value of these measurements is taken as the number of small pores P per unit area.

[0028] From the viewpoint of achieving a better balance between the leakage prevention effect and discharge performance of liquid 5, the spacing D1 between the small holes P in the small-pore elastomer sheet 3 when stretched to 110% (see Figure 3) is preferably 0.5 mm or more, more preferably 1.0 mm or more, preferably 50 mm or less, more preferably 10 mm or less, and also preferably 0.5 mm or more and 50 mm or less, more preferably 1.0 mm or more and 10 mm or less. The spacing between small holes P in the small-pore elastomer sheet 3 when stretched to 110% is measured by the following method. First, the sample piece is stretched to 110% using the same method as described in [Method for measuring the number of small holes P per unit area]. Next, the spacing between the centroids of adjacent small holes P in the sample piece is measured at three locations, and the average of these spacings is taken as the spacing between small holes P in the small-pore elastomer sheet 3 when stretched to 110%. Here, "spacing between small holes P" refers to the spacing between small holes P in the tensile direction of the small-pore elastomer sheet 3 (sample piece) when the small holes P are not elongated in one direction. If the shape of the small holes P is elongated in one direction, it refers to the spacing between small holes P located in a direction perpendicular to the longitudinal direction of the small holes P.

[0029] Various types of elastic resin films can be used as the forming material for the porous elastomer sheet 3. As the elastic resin, thermoplastic elastomers are preferred because they easily exhibit the desired elasticity, the elastomer sheet can be heat-bonded to the guard portion 28, and the sheets can be heat-sealed to each other. Examples of thermoplastic elastomers include styrene-based elastomers, ester-based elastomers, urethane-based elastomers, olefin-based elastomers, and amide-based elastomers. Examples of styrene-based elastomers include SBS (styrene-butadiene-styrene), SIS (styrene-isoprene-styrene), SEBS (styrene-ethylene-butadiene-styrene), and SEPS (styrene-ethylene-propylene-styrene). Examples of ester-based elastomers include those in which the hard segment is polyester and the soft segment is polyester, polyether, or poly(ether-ester). Examples of urethane-based elastomers include those in which the hard segment is aromatic polyurethane or aliphatic polyurethane, and the soft segment is polyester, polyether, poly(ether-ester), polycarbonate, or polycaprolactone. Examples of olefin-based elastomers include those obtained by copolymerizing polyolefins such as polyethylene and polypropylene with ethylene-propylene rubber (EPM), ethylene-propylene-diene rubber (EPDM), and the like. Examples of amide-based elastomers include those obtained by copolymerizing a polyamide structure and a polyether structure.

[0030] The small-hole elastomer sheet 3 may have gas barrier properties. In this case, the small-hole elastomer sheet 3 can have gas barrier properties by having a gas barrier layer with gas barrier properties on the outer surface side. In such a form, the small-hole elastomer sheet 3 has a laminated structure including an elastic resin film layer that exhibits elasticity and a gas barrier layer. The gas barrier layer is composed of, for example, a polyolefin-based resin. Also, the small-hole elastomer sheet 3 may be composed of an elastic resin film layer having gas barrier properties. In such a form, for example, the small-hole elastomer sheet 3 has a single-layer structure composed of an elastic resin film layer having both elasticity and gas barrier properties. In this case, examples of the constituent resin (thermoplastic elastomer) of the elastic resin film layer having both elasticity and gas barrier properties include styrene-based elastomers (resin compositions obtained by adding additives to SIBS) and the like. When the small-hole elastomer sheet 3 has gas barrier properties, it is effective in terms of suppressing the volatilization of the liquid 5. It is particularly effective when retaining volatile liquids such as disinfectants with a high ethanol content.

[0031] From the viewpoint of more surely achieving gas barrier properties, the oxygen permeability coefficient of the small-hole elastomer sheet 3 having gas barrier properties is preferably 20×10 -16 (mol·m / m 2 ·sec·Pa) or less, more preferably 10×10 -16 (mol·m / m 2 ·sec·Pa) or less, and even more preferably 5×10 -16 (mol·m / m 2The gas barrier properties are less than or equal to (·sec·Pa). Such gas barrier properties can be measured using MOCON's OX-TRAN2 / 21ML by a method compliant with JIS K7126.

[0032] When the porous elastomer sheet 3 comprises a gas barrier layer and an elastic resin film layer that exhibits stretchability, the thickness of the gas barrier layer is preferably 1% or more, preferably 30% or less, more preferably 10% or less, preferably 1% to 30%, and more preferably 1% to 10% of the elastic resin film layer. By keeping it within this range, both the gas barrier properties and stretchability of the porous elastomer sheet 3 can be better achieved. Aluminum foil or the like can be used as the gas barrier layer. In this case, the gas barrier layer may rupture when the porous elastomer sheet 3 is stretched. Even if the gas barrier layer ruptures, a higher gas barrier performance can be obtained than in a configuration without a gas barrier layer, and the volatilization of the liquid 5 inside the bag 11 can be suppressed.

[0033] The porous elastomer sheet 3 may be self-adhesive. Self-adhesion is the property of adhering only to similar substances and not substantially adhering to other substances. The porous elastomer sheet 3 can be self-adhesive by comprising a self-adhesive elastic resin film layer. That is, such a form of porous elastomer sheet 3 is composed of an elastic resin film layer that possesses both self-adhesion and elasticity. Examples of constituent resins for the elastic resin film layer that possesses both self-adhesion and elasticity include acrylic polymer resins such as methyl acrylate and ethyl acrylate. The self-adhering properties of the porous elastomer sheet 3 are beneficial because they allow for better maintenance of the closed state of the pores P.

[0034] The porous elastomer sheet 3 may have self-healing properties. Self-healing properties are those that restore damage caused by impact or the like. The porous elastomer sheet 3 can have self-healing properties by comprising an elastic resin film layer that has self-healing properties. That is, such a form of porous elastomer sheet 3 is composed of an elastic resin film layer that has both self-healing properties and elasticity. The elastic resin film layer that has both self-healing properties and elasticity is composed of, for example, a crosslinked polyurethane elastomer. If the porous elastomer sheet 3 has self-healing properties, it is effective in maintaining a better closed state of the pores P.

[0035] In the liquid container 1, the container section 24 may have other sheets on the outer surface of the perforated elastomer sheet 3. For example, a fiber sheet may be provided as the other sheet on the outer surface of the perforated elastomer sheet 3. In this case, the liquid 5 discharged to the outside through the perforations P of the perforated elastomer sheet 3 diffuses through the fiber sheet, which is effective in improving the diffusivity of the liquid 5. The other sheet is joined to the perforated elastomer sheet 3 by known means such as adhesives or heat sealing. Other sheets that can be used include woven fabrics, nonwoven fabrics, or other fiber sheets, or foams.

[0036] In the liquid container 1 of this embodiment, as described above, a perforated elastomer sheet 3 is fixed to the inner surface of the top surface 22. This perforated elastomer sheet 3 is fixed to the inner surface of the guard portion 28 on the top surface 22 and closes the pressing operation portion 21 of the top surface 22. In this embodiment, the perforated elastomer sheet 3 is fixed to the top surface portion 22 with an elongation of preferably 100% or more and less than 110%, more preferably 100%. That is, the perforated elastomer sheet 3 can also be fixed in its natural state (elongation of 100%). This allows the perforations P to open more easily when pressed, thereby further improving the discharge of the liquid 5. Elongation is the ratio (%) of the length after elongation to the length before elongation.

[0037] The liquid container 1 of this embodiment has a filling port 29 for liquid 5 that communicates with the storage section 24 (see Figures 1 and 2). Specifically, the filling port 29 is formed in a plate-shaped member 27a that forms the peripheral wall portion 27 of the container body 20, and the filling port 29 communicates with the inside of the storage section 24 within the container body 20. Liquid 5 can be refilled into the storage section 24 through this filling port 29. The filling port 29 of this embodiment is a through-hole that penetrates the plate-shaped member 27a, and the opening on the outer surface is closed by a rubber stopper or a known check valve, etc. When filling the storage section 24 with liquid 5, the blockage by the rubber stopper or a known check valve, etc. is released and the container is used.

[0038] The container body 20 in this embodiment is a hollow hexahedron made of plate-like material. As mentioned above, the material of the container body 20 can be an inorganic material such as metal or glass, or a synthetic resin. In this case, the container body 20 can be manufactured by injection molding or press blow molding using a mold. Examples of inorganic materials include glass, ceramics such as porcelain, and metals. Examples of synthetic resins include polyethylene such as polyethylene terephthalate, polypropylene, and high-density polyethylene, as well as polyvinyl chloride. Examples of glass include soda glass, borosilicate glass, silica glass, and quartz glass.

[0039] The liquid 5 contained in the liquid container 1, more specifically in the storage section 24, is not particularly limited and can be any liquid depending on the intended use of the liquid container 1. Examples of the liquid 5 include disinfectant alcohol such as ethanol, liquid cosmetics such as lotions, emulsions, serums, and liquid foundations, liquid cleaning agents such as facial cleansers, hand soaps, and body soaps, liquid hair care agents such as shampoos, conditioners, and hair styling products, cleaning detergents for floors and toilets, impregnation liquids for floor wipers, laundry detergents, fabric softeners, dyes or pigments such as paints, etc. In other words, the liquid container 1 of this embodiment can be used for the same purposes as wet wipes impregnated with disinfectant or cleaning detergents, floor wipers used for wiping floors, and makeup sheets for applying cosmetics such as lotions, emulsions, serums, and foundations to the skin. When used for such purposes, the liquid may be applied directly to the object to be coated by bringing the liquid container 1 filled with the above-mentioned liquid into contact with the object to be coated. Alternatively, the liquid discharged from the liquid container 1 may be impregnated into a fiber sheet such as nonwoven fabric or paper, and then the fiber sheet may be brought into contact with the object to be coated, thereby indirectly applying the liquid to the object to be coated.

[0040] The viscosity of the liquid 5 contained in the liquid container 1 is not particularly limited and may be a low-viscosity liquid or a high-viscosity liquid. If the liquid 5 is a low-viscosity liquid, its viscosity is preferably 0.005 Pa·s or less, more preferably 0.0001 Pa·s or more and less than 0.002 Pa·s. If the liquid 5 is a high-viscosity liquid, its viscosity is preferably 20 Pa·s or less, more preferably 17 Pa·s. The viscosity of liquid 5 can be measured at 20°C using a digital viscometer [viscometer TVB-10M (manufactured by Toki Sangyo Co., Ltd.), rotor No. 3, rotation speed: 30 rpm]. Furthermore, liquid 5 may be in the form of a sol or a gel.

[0041] When the liquid 5 is approximately 1 Pa·s or less, the liquid 5 is quickly discharged onto the surface of the porous elastomer sheet 3, forming a liquid reservoir, which allows the liquid 5 to efficiently come into contact with the object to be applied to. This is particularly useful when storing disinfectant or the like in the liquid container 1, as the liquid 5 comes into contact with areas such as the gaps between fingernails when the porous elastomer sheet 3 is pressed with a finger via the pressing operation part 21, allowing disinfection of areas that are difficult to disinfect with conventional containers. When the extension of the porous elastomer sheet 3 is released, this liquid reservoir is re-stored inside the liquid container through the small holes P.

[0042] The surface tension of the liquid 5 contained in the liquid container 1 is not particularly limited. From the viewpoint of ensuring more reliable liquid retention, the surface tension of the liquid 5 is preferably 20 mN / m or more, more preferably 21 mN / m or more. There is no particular upper limit to the surface tension of the liquid 5. When the viscosity of the liquid 5 is 1 Pa·s or more, the surface tension of the liquid 5 is 75 mN / m or less from a practical standpoint. The surface tension of liquid 5 can be measured using the Wilhelmy method based on JIS K 2241 (2017).

[0043] Next, another embodiment of the liquid storage container of the present invention will be described. In the following description, components that differ from those of the embodiments shown in Figures 1 to 5 will be mainly described, and similar components will be denoted by the same reference numerals and their description will be omitted. For components that are not specifically described, the descriptions of the embodiments described above will be applied as appropriate.

[0044] Figure 6 shows a pressing operation part 21 in a form different from the embodiment described above. In the liquid container 1 shown in Figure 1 described above, the pressing operation part 21 has a square shape in plan view, but the shape of the pressing operation part 21 is not limited to this form. For example, the pressing operation part 21 may have a shape that includes multiple curved parts with different curvatures in its contour, a shape that includes multiple straight parts in its contour, or a shape that includes both the curved parts and the straight parts in its contour. Examples of shapes that include multiple curved parts with different curvatures in its contour include a shape in plan view that includes curved parts with one or more types of curvature, such as a circle or an ellipse, or a shape in which multiple curved parts with different curvatures form an uneven surface. Examples of shapes that include multiple straight parts in its contour include a polygonal shape in plan view, such as a rectangle, triangle, quadrilateral, or hexagon, or an arrow shape or star shape. Furthermore, examples of shapes that include both curved parts and straight parts in its contour include a heart shape as shown in Figure 6(a), as well as a fan shape, teardrop shape, semicircle, etc.

[0045] The liquid container 1 shown in Figure 1 has one press operation part 21 on its top surface 22, but it may have multiple press operation parts 21 on its top surface. In the configuration shown in Figure 6(b), four press operation parts 21 are formed on the top surface 22, and these press operation parts 21 are defined by a grid-like guard part 28.

[0046] Figure 7 shows a cross-sectional view of a liquid container of a different form from the embodiment described above. The liquid container 1a shown in Figure 7(a) has a tapered bottom a1 in cross-sectional view, where the storage section 24a narrows away from the top surface 22. The container body 20 of this embodiment has a plate-shaped member forming the bottom surface 23a, which has a tapered recess where the cross-sectional area decreases from the inner side to the outer side. Due to this recess, the bottom a1 of the storage section 24a is tapered. As a result, even if only a small amount of liquid 5 remains in the storage section 24a, the liquid 5 is collected at the bottom a1, making it easier to discharge the liquid 5.

[0047] The liquid container 1b shown in Figure 7(b) has an inversion member 6. The inversion member 6 in this embodiment is a hook-shaped member provided on the bottom surface 23 of the container body 20 and is erected on the bottom surface 23. The liquid container 1b in this embodiment is used in a state where the top surface 22 is suspended vertically downward by the inversion member 6 (hook-shaped member). This allows the liquid 5 in the container 24 to be easily discharged and the liquid 5 to be used completely. The base end of the inversion member 6 in this embodiment is joined to the bottom surface 23 of the container body 20 by a known joining means such as an adhesive. The inversion member 6 may be a hook-shaped member capable of suspending the top surface 22 downwards, as shown in Figure 7(b), or it may be a member capable of holding the top surface 22 in a downward position using magnetism or double-sided tape. The inversion member 6 is provided on the bottom surface 23 or the peripheral wall 27 of the container body 20. For example, by providing the inversion member 6, which is made of a magnet or double-sided tape, on the bottom surface 23 or the peripheral wall 27 of the container body 20, the container body 20 (liquid container) can be installed in a state where it is attached to a wall.

[0048] The liquid container 1c shown in Figure 7(c) has a liquid impregnated body 7 inside the container 24. The impregnated body 7 is effective in improving the liquid retention capacity of the liquid 5. Furthermore, when the amount of liquid 5 remaining in the container 24 becomes low, the liquid 5 can be drawn up by the impregnated body 7 by pressing the container 24 together, thereby improving the efficiency of liquid 5 discharge. The impregnated body for liquid 5 can be any material capable of impregnating with liquid 5 without particular limitations. Examples of such impregnated bodies include stacked hydrophilic fibers such as cellulose, fiber sheets such as nonwoven fabrics, and porous materials such as sponges. Examples of porous materials include foams, specifically polyurethane, wet urethane, acrylonitrile-butadiene copolymer (NBR), styrene-butadiene copolymer (SBR), natural rubber (NR), ethylene-propylene-diene copolymer (EPDM), melamine foam, polyvinyl alcohol (PVA), and foams containing cellulose as raw materials.

[0049] The liquid container 1d shown in Figure 8 has a bag body 11 made up of a porous elastomer sheet 3. That is, the storage section 24d is formed by a bag body 11 made up of a porous elastomer sheet 3. The bag body 11 is flat and has a storage space inside in which liquid 5 can be stored, and the storage space for the liquid 5 is defined by a sheet material containing the porous elastomer sheet 3. The bag 11 of this embodiment is flat and has a first surface 13 and a second surface 14 located on the opposite side. Inside the bag 11, that is, between the sheet material 3 forming the first surface 13 and the sheet material forming the second surface 14, there is a containment space for containing liquid 5. The entire sheet material forming the bag 11 of this embodiment is made of an elastic elastomer sheet, and a part of the sheet material is a small-pore elastomer sheet 3. Specifically, the elastomer sheet forming the entire bag 11 has a plurality of small pores P (not shown) formed in the portion forming the first surface 13, so the bag 11 is equipped with a small-pore elastomer sheet 3. Alternatively, the sheet material forming the first surface 13 and the second surface 14 may each be a small-pore elastomer sheet 3. In other words, the entire sheet material of the bag 11 may be a small-pore elastomer sheet 3 having a plurality of small pores.

[0050] As shown in Figure 9, the bag 11 of this embodiment has a folded portion 15 formed by folding a single sheet material containing a small-perforated elastomer sheet 3 in half, and a joining portion 12 that joins the periphery of the two stacked sheet materials in a portion other than the folded portion 15. In other words, the bag 11 of this embodiment is formed by sealing the periphery of the folded sheet material on three sides. In this embodiment, the bag 11 is formed by sealing the periphery of the folded sheet material on three sides, but it is not limited to this. For example, the bag 11 may be formed by sealing the periphery of two stacked sheet materials on all four sides. Since the storage section 24d is formed by a bag 11, each bag 11 can be replaced, making it easy to refill the liquid 5.

[0051] The bag 11 of this embodiment has a filling passage 17 for liquid 5, and a check valve (not shown) is provided in the filling passage 17 (see Figure 8). By providing such a filling passage 17 and a check valve, it is possible to suppress the backflow of liquid 5 from the filling passage 17 to the outside, making it easy to fill the bag 11 with liquid 5. The filling passage 17 with a check valve can be provided by sandwiching the tube that forms it between sheets of material that make up the bag 11 and joining them together.

[0052] In this embodiment, the liquid container 1d was formed from a single sheet material, but the bag 11 may be formed from different sheet materials. For example, the bag 11 has a porous elastomer sheet 3 that forms the first surface 13 and another sheet material that forms the second surface 14, and the forming materials of the porous elastomer sheet 3 and the other sheet material may be different from each other. In this case, the other sheet material may be a sheet material that does not have elasticity, and specifically may not contain an elastic resin film layer. Examples of non-stretchable sheet materials include polypropylene, polyethylene, polystyrene, and polyester. The sheet material may also be stretchable.

[0053] The liquid container 1e shown in Figures 10(a) and (b) comprises a container body 20e having a hollow hexahedron, and each face of the hexahedron has a pressing operation part 21. In other words, the pressing operation part 21 is provided on each of the four plate-like members that make up the peripheral wall portion 27, and on each of the plate-like members that make up the top surface portion 22 and the bottom surface portion 23. Furthermore, an elastomer sheet is fixed to the inner surface of each plate-like member, and all or part of it is a small-perforated elastomer sheet 3, and the liquid 5 can be discharged from each or part of the faces of the hexahedron. In this embodiment, the container body 20e has a guard portion 28 that constitutes a hexahedral framework. In this embodiment, the shape of each pressing operation portion 21 on the peripheral wall portion 27, top portion 22, and bottom portion 23 of the container body 20e is the same, but the shape of each pressing operation portion 21 may be different.

[0054] The liquid container 1f shown in Figures 11(a) and (b) comprises a container body 20f having a hollow hexahedral shape, the container body 20f having a cylindrical peripheral wall portion 27 and a bottom portion 23, and a top portion 22f that is separable from the peripheral wall portion 27. In the liquid container 1f of this embodiment, the top portion 22f is fixed to the peripheral wall portion 27 by inserting fixing bolts 35 into bolt holes (not shown) that penetrate the top portion 22f and bolt holes (not shown) provided in the peripheral wall portion 27. As shown in Figure 11(b), the perforated elastomer sheet 3 is sandwiched and fixed between the top portion 22f and the peripheral wall portion 27. From the viewpoint of further stabilizing the fixing of the perforated elastomer sheet 3, it is preferable that the top portion 22f and the peripheral wall portion 27 have recesses 31 and protrusions 32 that fit together and sandwich the perforated elastomer sheet 3. In the embodiment shown in Figure 11, by designing the cross-sectional shape of the recess 31 and the protrusion 32 to be V-shaped, it is possible to achieve both the fixation of the small-perforated elastomer sheet 3 and the liquid sealing performance between the sheet 3 and the container body 20f.

[0055] Next, a method for manufacturing the liquid container of the present invention will be described based on a preferred embodiment. The manufacturing method of this embodiment is a manufacturing method of the liquid container of the embodiment described above, and comprises a hole forming step of forming small holes P in an elastomer sheet to obtain a hole elastomer sheet 3, a body forming step of joining the hole elastomer sheet 3 to the inner surface of a container body 20, and a filling step of filling the container body 24 with liquid 5.

[0056] In the small-hole formation process, the elastomer sheet 3 is manufactured by forming small holes P in the stretched raw material sheet 3' (see Figure 12). By stretching the raw material sheet 3' during perforation, small holes P that can be opened and closed by expansion and contraction can be formed. The raw material sheet 3' is an elastomer sheet with elasticity, and it is preferable to use one having the durohardness and thickness described above.

[0057] In the small-hole formation process of this embodiment, a small-hole elastomer sheet 3 is manufactured by cutting the stretched raw material sheet 3' (see Figure 12) to form small holes P. By stretching the raw material sheet 3' when cutting, small holes P that can be opened and closed by expansion and contraction can be formed.

[0058] In the small-hole formation process, the raw sheet 3' is preferably stretched to an elongation of more than 100% and 200% or less, more preferably 101% to 130%, and even more preferably 110%. Elongation is the ratio (%) of the length after stretching to the length before stretching. By stretching within this range, the closed state of the small holes P can be maintained well, and unintended leakage of liquid 5 can be suppressed. In the small-hole formation process, the raw sheet 3' may be subjected to two or more multi-stage cutting processes. In this case, the raw sheet 3' may be cut after being stretched to an arbitrary degree, and then cut again after being stretched to a different degree.

[0059] In the small-hole formation process of this embodiment, a raw material sheet 3' is introduced between a pair of rolls, a cutter roll 50 and an anvil roll 53, and a predetermined area of ​​the raw material sheet 3' is cut (see Figure 12). As a result, the raw material sheet 3' has an area where small holes P are formed (hereinafter also referred to as the "small-hole area") and an area where small holes P are not formed (hereinafter also referred to as the "non-small-hole area"). The small-hole area of ​​the raw material sheet 3' becomes the small-hole elastomer sheet 3. The cutter roll 50 has a blade 51 on its circumferential surface. Such a blade 51 has a shape that corresponds to the contour of the small hole P when it is opened. In the small hole formation process of this embodiment, the raw sheet 3' is stretched in the machine direction (MD direction) to form the small hole P. In this case, from the viewpoint of further improving the occlusion of the small hole P and further improving the liquid retention of the small hole elastomer sheet 3, it is preferable that the blade 51 of the cutter roll 50 is long in the direction perpendicular to the machine direction (CD direction). In other words, it is preferable that the longitudinal direction of the blade 51 of the cutter roll is perpendicular to the stretching direction of the raw sheet 3'. For example, it is preferable that the blade 51 of the cutter roll 50 is long in the axial direction of the cutter roll, which coincides with the CD direction. To improve cutting performance, it is preferable that the cutter roll 50 is installed such that the tip edge of the blade 51 is inclined at about 1 to 30° with respect to the CD direction. In this case, the angle θ of the small hole P (slit) formed by the blade 51 with respect to the CD direction is within the above range (see Figure 13). The cutting process in the small hole formation process may be performed by introducing a raw material sheet 3' between a cutting jig having multiple blades 51 protruding from the substrate and a receiving jig that receives the blades 51, and then raising and lowering the cutting jig relative to the raw material sheet 3'.

[0060] From the viewpoint of further improving the liquid retention of the small-porous elastomer sheet 3, the blade 51 used for cutting preferably has a length of 0.1 mm to 2.0 mm, more preferably 0.5 mm to 1.5 mm, and even more preferably 0.8 mm to 1.0 mm.

[0061] In the small-hole formation process, instead of cutting with a cutter roll, the raw sheet 3' may be perforated using a perforating pin P10 (see Figure 14). Even when small holes P are formed by perforation, it is preferable that the raw sheet 3' is stretched to the degree of elongation described above. The perforation process can be carried out, for example, by introducing an extended raw material sheet 3' between a pin roll having multiple perforation pins P10 on its circumferential surface and an anvil roll. Alternatively, the process can be carried out by introducing an extended raw material sheet 3' between a perforation jig having multiple perforation pins P10 protruding from the substrate and a pin receiving jig that receives the perforation pins, and then raising and lowering the perforation jig relative to the raw material sheet 3'.

[0062] The piercing pin P10 preferably has a diameter of 0.1 mm or more and less than 1.5 mm, more preferably 0.5 mm or more and 1.0 mm or less. The pin receiving jig may have a receiving hole for receiving the drilling pin. In this case, the diameter of the receiving hole is preferably larger than the diameter of the drilling pin by 0.1 mm to 10 mm, and more preferably by 0.5 mm to 2.0 mm. The pin receiving jig does not necessarily have to have a receiving hole. A foamed material such as polystyrene foam can be used as such a pin receiving jig.

[0063] In the small-hole formation process, when a pair of rolls comprising a cutter roll or pin roll and an anvil roll are used for cutting or perforating, it is preferable that the diameter of the cutter roll or pin roll exceeds 100 mm. With this configuration, the deflection of the rolls due to the reaction force from the raw material sheet 3' during cutting or perforating is suppressed, thereby further improving the accuracy of small-hole formation P.

[0064] After perforation, the raw sheet 3' is cut to a predetermined size to obtain a small-perforated elastomer sheet 3. In the next main body forming step, the perforated elastomer sheet 3 is joined to the container body 20 obtained by assembling the plate-like members. This creates a space for holding the liquid 5, i.e., the internal space of the storage section 24. Preferably, this space is sealed with the perforations P closed, without pressing the perforated elastomer sheet 3. This suppresses leakage of the liquid 5 even when the top surface 22 is facing downward in the vertical direction, and further improves liquid retention. In this embodiment, the perforated elastomer sheet 3 is joined to the inner surface of the top portion 22 using known joining methods such as adhesive or heat sealing. This forms a storage portion 24 defined by the perforated elastomer sheet 3, the peripheral wall portion 27, and the bottom portion 23, thereby obtaining a liquid storage container 1.

[0065] Furthermore, when forming the liquid container 1f shown in Figure 11, a small-perforated elastomer sheet 3 is sandwiched between a recess 31 provided in the peripheral wall portion 27 and a protrusion 32 on the top surface portion 22f, and the sheet 3 is fixed to the container body 20f.

[0066] When the storage section is formed by the aforementioned bag 11, for example, the bag 11 can be obtained by the following method: A raw sheet 3' is divided into areas that have been cut or perforated and areas that have not, and a base sheet including both of these areas is cut out. Next, the base sheet is folded in half, and a three-sided seal is applied along its periphery to form a joint 12 and the bag 11. Alternatively, the bag 11 may be formed, for example, by sealing the periphery of two overlapping sheet materials on all four sides. The joint 12 can be formed using known joining means such as adhesive or heat sealing.

[0067] The resulting liquid container 1 is then used in the next step, the filling step. In the filling process, liquid 5 is filled into the containment section 24 through the small holes P using a hollow needle or the like. In the filling process, the liquid 5 is filled with the small holes P of the small-pore elastomer sheet 3 in a closed state. For example, the filling process can be efficiently carried out by filling the liquid 5 through the small holes P of the small-pore elastomer sheet 3 in its natural state, or, in the case of a form with a check valve, by filling the liquid 5 through the check valve.

[0068] The present invention is not limited to the embodiments described above and can be modified as appropriate. Furthermore, the embodiments described above may be combined. For example, in the embodiment shown in Figure 2, the liquid container 1 has a filling port 29 for the liquid 5 in the container body 20, but it does not have to have such a filling port 29. Furthermore, if the liquid container 1d has a bag 11, the bag 11 may have a small-porous elastomer sheet 3 and other sheet materials adjacent to each other on the same plane. Furthermore, the bag body 11 may not have a filling passage 17. Furthermore, the liquid storage container of the present invention is capable of storing liquid in the storage section 24, and encompasses both a form in which liquid is stored and a form in which liquid is not stored. [Explanation of Symbols]

[0069] 1, 1a, 1b Liquid container 3. Small-perforated elastomer sheet 5 liquid 6. Inverted Member 7 Impregnated body 11 Bag body 12 Joint 13 Page 1 14 Side 2 15 Folding section 17 Filling path 20 Container body 21 Pressing operation section 22 Top section 23 Bottom part 24 Storage Unit 27 Peripheral wall section 28 Guard section 29 Filling port 31 Recess 32 Convex part 35 volts 50 Cutter Rolls 51 blades 53 Anvil Roll a1 bottom D1 Interval P small hole P1 small hole row P10 Drilling Pin Y extension direction X-direction (orthogonal direction)

Claims

1. It has a storage section capable of containing liquid inside, and a guard section that covers a part of the storage section. At least a portion of the housing is formed from a perforated elastomer sheet that is directly fixed to the inner surface of the guard portion. The aforementioned perforated elastomer sheet has a durohardness of A20 to A70, has multiple small holes, and these small holes can be opened and closed by expansion and contraction. A liquid container is configured such that the small holes in the perforated elastomer sheet are opened and the liquid is discharged by applying pressure to the perforated elastomer sheet through a pressing operation part that is not covered by the guard portion.

2. It has a top surface with an opening and a container body with a liquid storage section formed inside, The liquid container according to claim 1, wherein the perforated elastomer sheet is arranged on the inner surface of the top surface, the opening of the top surface is the pressing operation part, and the liquid is discharged by pressurizing the perforated elastomer sheet from the opening.

3. The liquid storage container according to claim 2, wherein in a cross-sectional view, the storage portion has a tapered bottom that narrows in a direction away from the top surface.

4. The liquid container according to claim 2, having an inverting member, and used with the top surface facing downward in the vertical direction.

5. A liquid storage container according to any one of claims 2 to 4, having a liquid filling port that communicates with the storage section.

6. The liquid storage container according to any one of claims 1 to 4, wherein the storage section contains a liquid-impregnated body.

7. Having a storage portion capable of containing liquid inside, and a guard portion that covers a part of the storage portion, At least a portion of the aforementioned housing is formed from a perforated elastomer sheet. The aforementioned perforated elastomer sheet has a plurality of small holes, and these small holes can be opened and closed by expansion and contraction. The small holes are opened and the liquid is discharged by applying pressure to the perforated elastomer sheet through the pressing operation part which is not covered by the guard portion. A liquid storage container in which the storage section is formed by a bag body that includes the perforated elastomer sheet.

8. The liquid container according to claim 7, wherein the bag has a filling passage for the liquid.

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