Absorbent material for portable toilets

Abstract

To provide an absorber for a simple toilet, capable of varying an absorbent amount easily, suppressing gel blocking of a high absorbent polymer, discarding and removing an absorber which has absorbed fluid, and being easily used by unspecified users.SOLUTION: There is provided a simple toilet absorber including a plurality of bag bodies having a different dimension, the bag bodies seal powder bodies of a high absorbent polymer in a bag formed of a liquid permeable nonwoven fabric, the bag bodies are stored in a simple toilet in a stacked state.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] This invention relates to an absorbent material for portable toilets. [Background technology]

[0002] In the event of a disaster, if flush toilets become unusable due to a water outage, portable toilets are used. Portable toilets primarily use absorbent materials such as powdered absorbent polymers that absorb excrement and solidify into a gel, or absorbent sheets made of absorbent material similar to those found in general absorbent products, as absorbent materials for bodily fluids such as urine.

[0003] However, when using the above-mentioned powdered absorbent polymer as a bodily fluid absorbent, controlling the amount absorbed is difficult, and there are pros and cons to handling it. Furthermore, while absorbent sheets are easy to handle, there are limitations to adjusting the amount absorbed, making them unsuitable for use by a large number of users. In light of these problems, various proposals have been made.

[0004] Patent Document 1 describes a toilet bowl in which a lump-shaped treatment agent containing an acidic solid substance, an absorbent polymer, and a binder, or a granular treatment agent obtained by crushing the same, is pre-placed (claims 1, 8, and 9). According to Patent Document 1, by pre-placing a lump-shaped treatment agent containing an acidic solid substance, an absorbent polymer, and a binder in the toilet bowl, it is possible to treat bodily fluids such as urine simply and efficiently without requiring operations such as stirring, and it is possible to suppress unpleasant odors. Furthermore, since the lump-shaped treatment agent is solidified and no dust is scattered during use, handling is improved, and in nursing care settings, since no dust is generated, it is possible to suppress health hazards to the person being cared for, the user, and the caregiver (paragraph 0024).

[0005] Patent Document 2 describes an absorbent sheet for a portable toilet (Claim 1) comprising: a container having an upward-facing opening for containing the user's excrement; a frame having a toilet seat portion to which the container is detachably attached; and an absorbent sheet for a portable toilet that is attached to the container and is rectangular in shape when unfolded, wherein the absorbent sheet has a permeable surface sheet, an impermeable back sheet, and a rectangular sheet-shaped absorbent body disposed between them; a body fluid absorbing portion housed in the container so as to cover the bottom; a flap portion provided along the outer circumference of the body fluid absorbing portion, which is more flexible than the body fluid absorbing portion and has first and second flap portions located on one and the other side of the body fluid absorbing portion; and a pair of elastically expandable thread-like members joined to the first and second flap portions respectively so as to be parallel to and spaced apart from the two opposing edges of the absorbent body when unfolded. It is stated that according to this absorbent sheet for a portable toilet, it is possible to quickly absorb excrement by attaching it to a container so as to form a wide absorbent surface (Paragraph 0011).

[0006] Patent Document 3 describes a disposable, lightweight, and simple toilet storage device comprising (1) folded thick cardboard (2 mm), (2) a powder containing zeolite superabsorbent polymer and boric acid for storing excrement, and (3) waterproof paper made of kraft paper laminated with poly, fixed to the inside of the thick cardboard, which can be easily used as a box-shaped toilet tank by opening the thick cardboard to the left and right, and after use the top opening can be sealed with double-sided tape and disposed of as combustible waste (Claim 1). Patent Document 3 provides a lightweight and simple disposable toilet storage device that can be used for handling excrement, vomiting, etc. in times of disaster, emergency, etc. (Paragraph 0009).

[0007] Patent Document 4 describes an absorbent for an absorbent article, comprising a plurality of bags inside, each bag having a bag body made of a hydrophilic nonwoven fabric and a superabsorbent polymer (hereinafter also referred to as "SAP") sealed inside the bag body, wherein the bag has a length of 30 mm or more and a width of 9 mm or more and a width of 30 mm (Claim 1), and an absorbent article (Claim 6) in which this absorbent is placed between a liquid-permeable top sheet and a liquid-impermeable back sheet. According to Patent Document 4, an absorbent is provided which allows the SAP to be freely arranged according to the location and which is less prone to SAP leakage and gel blocking, and an absorbent article equipped with the absorbent is provided. [Prior art documents] [Patent Documents]

[0008] [Patent Document 1] Japanese Patent Publication No. 2017-6913 [Patent Document 2] Patent No. 6817647 [Patent Document 3] Utility Model Registration No. 3107866 [Patent Document 4] Japanese Patent Publication No. 2021-159111 [Overview of the Initiative] [Problems that the invention aims to solve]

[0009] The prior art described in Patent Documents 1 to 3 each has its own advantages and disadvantages. In particular, as absorbent materials for portable toilets used by an unspecified number of users, they are not easy to adjust in terms of absorption capacity and are insufficient in terms of ease of use. Specifically, it is not easy to increase the absorption capacity as needed, the absorbent material does not efficiently absorb excrement, the absorbent polymer is prone to gel blocking, and the ease of use in terms of replacing, disposing of, and adding absorbent material is also insufficient.

[0010] Furthermore, Patent Document 4 does not describe the use of SAP bags as absorbent material for portable toilets. Moreover, according to the inventor's research, it has been found that simply laying the SAP bags described in Patent Document 4 in layers inside a portable toilet does not provide sufficient absorption efficiency for bodily fluids such as urine, resulting in problems such as bodily fluids accumulating at the bottom of the portable toilet, and as the number of uses increases, some of the SAP bags are not used for absorbing bodily fluids, reducing the flowability of bodily fluids from the upper layer to the lower layer, which may cause some of the bodily fluids to overflow outside the portable toilet. It is presumed that one of the reasons these problems occur is that, unlike absorbent articles that use only a small amount of SAP bags, portable toilets use a large amount of SAP bags.

[0011] The object of the present invention is to provide an absorbent material for portable toilets that allows for easy adjustment of absorption capacity, suppresses gel blocking of superabsorbent polymers, facilitates disposal and removal of absorbed material, and is user-friendly for a large number of users. [Means for solving the problem]

[0012] The inventors of this invention conducted extensive research to solve the above problems and, as a result, discovered that instead of simply storing the SAP bags described in Patent Document 4 in layers as absorbent material in a portable toilet, storing multiple SAP bags of different dimensions in a stacked state inside the portable toilet solves problems such as bodily fluids accumulating at the bottom of the portable toilet or overflowing to the outside of the portable toilet, thereby obtaining an absorbent material for portable toilets that meets the purpose, and thus completed the present invention. That is, the present invention provides the following absorbent material for portable toilets.

[0013] (1) Absorbent material for portable toilets, It includes multiple bags of different dimensions. The aforementioned bag is made of a liquid-permeable nonwoven fabric and contains a powder of a superabsorbent polymer sealed inside. An absorbent material for portable toilets, wherein the aforementioned bags are stored in a stacked state inside the portable toilet. (2) The bag comprises a first SAP bag and a second SAP bag, The first SAP bag has a length of 100 mm or more and 150 mm or less, a width of 90 mm or more and 150 mm or less, and the content of the superabsorbent polymer is 9 g / bag or more and 15 g / bag or less. The second SAP bag has a length of 60 mm or more and 120 mm or less, a width of 45 mm or more and 110 mm or less, and the content of the superabsorbent polymer is 4 g / bag or more and 11 g / bag or less. The absorbent material for a portable toilet according to (1) above, wherein the first SAP bag and the second SAP bag are laminated in this order from above the portable toilet. (3) The bag body includes, in addition to the first SAP bag body and the second SAP bag body, a third SAP bag body. The third SAP bag has a length of 30 mm or more and 80 mm or less, a width of 9 mm or more and 65 mm or less, and the content of the superabsorbent polymer is 0.18 g / bag or more and 6 g / bag or less, and is laminated at the bottom of the portable toilet. The absorbent material for a portable toilet according to (2) above. (4) The apparent area (mm 2 ) represented by the length × width per one of the first SAP bag body, the second SAP bag body, and the third SAP bag body is such that the first SAP bag body > the second SAP bag body > the third bag. The absorbent material for a portable toilet according to (3) above. (5) The number of the first SAP bag body, the second SAP bag body, and the third SAP bag body in the portable toilet is such that the first SAP bag body < the second SAP bag body < the third SAP bag body. The absorbent material for a portable toilet according to (3) or (4) above. (6) The absorbent amount of 0.9% physiological saline per 1 g of the superabsorbent polymer in the bag body is 30 g or more and 70 g or less. The absorbent material for a portable toilet according to any one of (1) to (5) above.

Advantages of the Invention

[0014] According to the present invention, there is provided an absorbent material for a portable toilet that can easily vary the absorption amount, suppress gel blocking of the superabsorbent polymer, can easily discard and remove the absorbent material that has absorbed body fluid, and can be used comfortably by an unspecified number of users.

Brief Description of the Drawings

[0015] [Figure 1] It is a perspective view schematically showing the configuration of a simple toilet in which absorbents for a simple toilet according to this embodiment are laminated and stored. [Figure 2] It is a plan view schematically showing the configuration of an absorbent for a simple toilet according to this embodiment. (a) shows the first embodiment, and (b) shows a modification of the first embodiment.

Mode for Carrying Out the Invention

[0016] Hereinafter, the absorbent for a simple toilet of this embodiment will be described while referring to the drawings. FIG. 1 shows a simple toilet 50 in which a plurality of first, second, and third bag bodies (hereinafter also referred to as "SAP bag bodies") 1, 2, and 3 of different sizes, which are absorbents for a simple toilet according to this embodiment, are laminated and stored. FIG. 2(a) shows the first, second, and third SAP bag bodies 1, 2, and 3, and FIG. 2(b) shows a SAP bag body 1A, which is a modification of the SAP bag bodies 1, 2, and 3. In this specification, body fluid refers to a liquid discharged from the body to the outside, such as urine, blood, and moisture in soft feces. Also, the simple toilet 50 is a simple toilet used for treating excretion, vomiting, etc. in times of disaster, emergency, etc., and is also a toilet without a flushing function.

[0017] <Simple toilet> The portable toilet 50 shown in Figure 1 has a toilet seat on which the user straddles to relieve themselves, and a waste tank located below the toilet seat to contain bodily fluids, etc. Inside the waste tank, as an absorbent material for the portable toilet, an upper layer is made of multiple first SAP bags 1 stacked from top to bottom, a middle layer is made of multiple second SAP bags 2 stacked, and a lower layer is made of multiple third SAP bags 3 stacked in that order. The first, second, and third SAP bags 1, 2, and 3 of this embodiment are flat bags of different dimensions, each containing a superabsorbent polymer powder sealed inside a liquid-permeable nonwoven fabric bag, as will be described later. Here, different dimensions mean that, in the case of flat bags, both the width and length dimensions are different. The dimensions of SAP bags 1, 2, and 3 are not particularly limited as long as their respective dimensions are different, but it is preferable to select them appropriately from the range shown in Table 1, for example. In this embodiment, three sizes of SAP bags 1, 2, and 3 are used, but the embodiment is not limited to these, and two or more sizes of SAP bags may be used. From Table 1, values ​​should be selected so that the length and width do not overlap to form SAP bags 1, 2 or SAP bags 1, 2, and 3. Table 1 below also shows an example of the content of each superabsorbent polymer in SAP bags 1, 2, and 3.

[0018] [Table 1]

[0019] According to this embodiment, when using an SAP bag, which is a bag made of hydrophilic nonwoven fabric with superabsorbent polymer powder sealed inside, as an absorbent for a portable toilet, instead of using an SAP bag of one size, two or more SAP bags of different sizes are used and stacked by size and stored in the toilet tank (in a preferred embodiment, multiple SAP bags of relatively larger size are stacked from the top to the bottom of the toilet tank to form the upper layer, and SAP bags of relatively smaller size are stacked to form the lower layer, and the lower and upper layers are stacked to form a stacked state), problems such as bodily fluids such as urine accumulating at the bottom of the toilet tank and not being absorbed, or some bodily fluids overflowing from the toilet tank are solved. According to this embodiment, the replacement and addition of SAP bags is easier than with powdered or sheet-type absorbent materials, and since bags of different sizes are stacked from large to small, the accumulation of human waste is suppressed and absorbed effectively. Furthermore, gel blocking of the superabsorbent polymer, which tends to occur when SAP bags of the same size are laid in the toilet tank, is suppressed, and the overflow of bodily fluids from the toilet tank is also suppressed.

[0020] In preferred embodiment A, the SAP bag comprises a first SAP bag 1 and a second SAP bag 2. The first SAP bag 1 has a longitudinal dimension of 100 mm to 150 mm, a width dimension of 90 mm to 150 mm, and a superabsorbent polymer content of 9 g / bag to 15 g / bag. The second SAP bag 2 has a longitudinal dimension of 60 mm to 120 mm, a width dimension of 45 mm to 110 mm, and a superabsorbent polymer content of 4 g / bag to 11 g / bag. The first SAP bag 1 is configured such that at least one, preferably both, of its longitudinal and width dimensions is larger than that of the second SAP bag 2 within the aforementioned range. In this embodiment, in the toilet tank of the portable toilet, an upper layer is formed by stacking multiple first SAP bags on top of each other, and a lower layer is formed by stacking multiple second SAP bags on top of each other, from top to bottom.

[0021] In preferred embodiment B, the first SAP bag 1 includes a first SAP bag 1, a second SAP bag 2, and a third SAP bag 3. The first SAP bag 1, which is the same as in embodiment A, has, for example, a longitudinal dimension of 100 mm to 150 mm, a width dimension of 90 mm to 150 mm, and a superabsorbent polymer content of 9 g / bag to 15 g / bag. The second SAP bag 2, which is the same as in embodiment A, has, for example, a longitudinal dimension of 60 mm to 120 mm, a width dimension of 45 mm to 110 mm, and a superabsorbent polymer content of 4 g / bag to 11 g / bag. The third SAP bag 3 has, for example, a length of 30 mm to 80 mm, a width of 9 mm to 65 mm, and a superabsorbent polymer content of 0.18 g / bag to 6 g / bag. The first SAP bag 1 is configured such that at least one, preferably both, of its longitudinal dimension and width dimension is larger than that of the second SAP bag 2 within the aforementioned range. The second SAP bag 2 is configured such that at least one, preferably both, of its longitudinal and widthwise dimensions is larger than that of the third SAP bag within the aforementioned range. In this embodiment, in the toilet tank of the portable toilet, an upper layer is made by stacking multiple first SAP bags, a middle layer is made by stacking multiple second SAP bags, and a lower layer is made by stacking multiple third SAP bags, all stacked in this order from top to bottom.

[0022] In Embodiment A, the apparent area (mm²) of each of the first SAP bag 1 and the second SAP bag 2 is expressed as length × width. 2 It is preferable that the length of the first SAP bag 1 > the length of the second SAP bag 2. Also, in Embodiment B, the apparent area (mm²) of each of the first SAP bag 1, the second SAP bag 2, and the third SAP bag 3, expressed as length × width, is 2 Preferably, the order of the SAP bags is first SAP bag 1 > second SAP bag 2 > third SAP bag 3. The same applies when there are four or more types of SAP bags. With this configuration, the absorption of bodily fluids by each SAP bag is improved, and the permeability of bodily fluids from the upper layer to the lower layer is improved, significantly suppressing the overflow of bodily fluids outside the septic tank and the accumulation of bodily fluids at the bottom of the septic tank.

[0023] In Embodiment A, the number of the first SAP bag body 1 and the second SAP bag body 2 stacked and stored in the toilet bowl of the simple toilet is preferably such that the first SAP bag body 1 < the second SAP bag body 2. In Embodiment B, the number of the first SAP bag body 1, the second SAP bag body 2, and the third SAP bag body 3 stacked and stored in the toilet bowl of the simple toilet is preferably such that the first SAP bag body 1 < the second SAP bag body 2 < the third SAP bag body 3. According to these configurations, the body fluid absorbency of each SAP bag body is improved, the permeability of body fluid from the upper layer to the lower layer is improved, and the overflow of body fluid outside the toilet bowl, the accumulation of body fluid at the bottom of the toilet bowl, etc. are significantly suppressed.

[0024] In each of the above-described embodiments, the absorption amount of 0.9% physiological saline per 1 g of the superabsorbent polymer of the SAP bag body is preferably 30 g or more and 70 g or less. According to this configuration, the permeability, fluidity, etc. of body fluid to the SAP bag body are increased, and even when body fluid is discharged, it is prevented from staying in the upper layer and overflowing outside the toilet bowl. Also, since the body fluid is gradually absorbed by the SAP bag body from the upper layer to the lower layer, the body fluid does not accumulate at the bottom of the toilet bowl. Further, it is prevented that one SAP bag body adheres to the surrounding SAP bag bodies through the hydrophilic non-woven fabric, and the replacement of the SAP bag body becomes easy. If the absorption amount is less than 30 g, although the deodorizing power is improved, there is a tendency that the accumulation of body fluid in the lower layer of the toilet bowl is likely to occur. If it exceeds 70 g, in the upper layer of the toilet bowl, the SAP bag bodies are partially stuck to each other through the hydrophilic non-woven fabric, the property of the body fluid permeating through the SAP bag body is reduced, and there is a tendency that the overflow of the body fluid outside the toilet bowl is likely to occur.

[0025] <SAP bag body> Hereinafter, the specific configuration of the SAP bag body will be described while referring to FIG. 2. As described above, the SAP bag body is a bag body in which a superabsorbent polymer is sealed in a bag made of a hydrophilic non-woven fabric.

[0026] The first, second, and third SAP bags 1, 2, and 3 shown in Figure 2(a) each contain a bag 10 made of a hydrophilic nonwoven fabric having a flattened three-dimensional shape, and a particulate superabsorbent polymer 12 sealed inside the bag 10 made of hydrophilic nonwoven fabric. The first, second, and third SAP bags 1, 2, and 3 are manufactured, for example, by folding the edges of a roughly rectangular hydrophilic nonwoven fabric in half in the width (short side) direction and overlapping them, filling the inside with the superabsorbent polymer 12, and forming a seal layer 11 by bonding a predetermined width area from the overlapped edges, thereby sealing the superabsorbent polymer 12 inside. The seal layer 11 can be formed, for example, by heat sealing, ultrasonic welding, or bonding using a hot melt adhesive. In Figure 2(a), the first, second, and third SAP bags 1, 2, and 3 are shown as having the same dimensions for convenience because they have roughly the same shape, but as mentioned above, their actual dimensions are different.

[0027] As shown in Figure 2(a), the first, second, and third SAP bags 1, 2, and 3 have the following dimensions: the long side dimension a (width dimension) is in the range of 100 mm to 150 mm for the first SAP bag 1, the second SAP bag 2 is in the range of 60 mm to 120 mm for the second SAP bag 2, and the third SAP bag 3 is in the range of 30 mm to 80 mm. The short side dimension b (longitudinal dimension) is in the range of 90 mm to 150 mm for the first SAP bag 1, the second SAP bag 2 is in the range of 45 mm to 110 mm for the second SAP bag 2, and the third SAP bag 3 is in the range of 9 mm to 65 mm. Furthermore, the thickness of the first, second, and third SAP bags 1, 2, and 3 is not particularly limited, but from the viewpoint of improving the permeability and fluid flow of body fluids to the SAP bags, the thickness of all of the first, second, and third SAP bags 1, 2, and 3 is, for example, in the range of 1.0 mm to 4.0 mm.

[0028] Here, regarding dimensions, if we consider the first SAP bag 1 > second SAP bag 2 > third SAP bag 3, it is preferable that the dimensional difference between the first SAP bag 1 and the second SAP bag 2 is, for example, in the range of 30 mm to 80 mm for dimension a (width dimension) and 30 mm to 80 mm for dimension b (longitudinal dimension), and that the dimensional difference between the second SAP bag 2 and the third SAP bag 3 is, for example, in the range of 40 mm to 70 mm for dimension a (width dimension) and 15 mm to 80 mm for dimension b (longitudinal dimension). According to this embodiment, differences in dimensionality result in differences in bodily fluid absorption, retention, and permeability. A portion of the bodily fluid is smoothly absorbed and retained in the first SAP bag 1 stacked in the upper layer, another portion is picked up and absorbed and retained in the second SAP bag 2 stacked in the middle layer, and the remaining portion is finely captured and absorbed and retained in the third SAP bag 3 stacked in the lower layer. As a result, the amount of bodily fluid absorbed and retained in the first SAP bag 1 increases, and the bodily fluid absorption and retention capacity of the portable toilet can be maintained mainly by replacing the first SAP bag 1. Furthermore, overflow of bodily fluids to the outside of the toilet tank and accumulation of unabsorbed bodily fluids at the bottom of the toilet tank are also significantly suppressed.

[0029] As described above, the first, second, and third SAP bags 1, 2, and 3 are configured to function as absorbent materials for portable toilets by sealing a highly absorbent polymer 12 into a bag 10 made of hydrophilic nonwoven fabric, making them thin, lightweight, and capable of absorbing bodily fluids from all directions. The first, second, and third SAP bags 1, 2, and 3 do not leak SAP from the bag 10 before use, and since they are standalone entities, they are easy to stack and place in the toilet tank. Furthermore, because the first, second, and third SAP bags 1, 2, and 3 can absorb bodily fluids from all directions, stacking a predetermined number of them can absorb and hold a relatively large amount of bodily fluids.

[0030] The hydrophilic non-woven fabric constituting the bag body 10 is not particularly limited, and examples thereof include air-through non-woven fabric, thermal bond non-woven fabric, spunlace non-woven fabric, spunbond non-woven fabric, pulp-containing non-woven fabric, and the like. These non-woven fabrics are composed of, for example, one or more of fibers made of synthetic resins such as polypropylene, polyethylene, and polyester, regenerated fibers such as rayon, and natural fibers such as cotton. Among these, from the viewpoints of body fluid absorbency, strength, flexibility, formability, etc., air-through non-woven fabric, pulp-containing non-woven fabric, and the like are preferable.

[0031] The pulp-containing non-woven fabric is, for example, a non-woven fabric in which a pulp fiber web is laminated on at least one surface of the non-woven fabric, as disclosed in U.S. Patent No. 5,284,703. For example, on one surface of the non-woven fabric, the fibers constituting the non-woven fabric and the pulp fibers are intertwined to integrate the pulp fiber web, and a part of the pulp fibers penetrates through the non-woven fabric in the thickness direction and is exposed on the other surface. The non-woven fabric and the pulp fiber web are extremely firmly bonded and integrated. Here, "integration" means that the non-woven fabric and the pulp fiber web do not peel off to such an extent as to reduce the function of the pulp-containing non-woven fabric until the absorbent article is used up. The aforementioned pulp-containing non-woven fabric can be produced, for example, by spraying pulp fibers onto the non-woven fabric by the hydroentangling method.

[0032] The non-woven fabric in the pulp-containing non-woven fabric is not particularly limited, but preferably a spunbond non-woven fabric, more preferably a spunbond non-woven fabric containing polypropylene fibers, and still more preferably a spunbond non-woven fabric made of polypropylene fibers. The basis weight of the non-woven fabric is 7 g / m 2 to 30 g / m 2 or less, and the basis weight of the pulp fiber web is, for example, 30 g / m 2 to 50 g / m 2 or less. The basis weight of the pulp-containing non-woven fabric is, from the viewpoints of strength, texture, etc., for example, 40 g / m 2 to 60 g / m 2 or less or 40 g / m 2 to 50 g / m 2The following is the range. In one embodiment, the pulp fiber web faces outward from the bag 10, and the nonwoven fabric faces inward from the bag 10. This configuration improves the liquid absorption of the bag 10.

[0033] The superabsorbent polymer 12 sealed in the bag 10 can be any polymer capable of absorbing body fluids and preventing backflow, without any particular limitations. Examples include polyacrylates, polyaspartates, (starch-acrylic acid) graft copolymers, (acrylic acid-vinyl alcohol) copolymers, (isobutylene-maleic anhydride) copolymers, and their saponified products. Among these, polyacrylates are preferred from the viewpoint of body fluid absorption per unit weight, and sodium polyacrylate is more preferred. SAP can be used alone or in combination of two or more types. Various commercially available products can be used as the superabsorbent polymer 12 without any particular limitations.

[0034] One embodiment of the first, second, and third SAP bags 1, 2, and 3 is one in which the superabsorbent polymer 12 is sealed directly inside the bag 10. Another embodiment of the first, second, and third SAP bags 1, 2, and 3 is one in which the superabsorbent polymer 12 is wrapped in a carrier sheet such as tissue, absorbent paper, or airlaid nonwoven fabric and then sealed inside the bag 10. In this case, the superabsorbent polymer 12 may be fixed to the surface of the carrier sheet with double-sided tape or adhesive. It is also preferable that the superabsorbent polymer 12 be sealed inside the bag 10 in a particulate form. The particle size of the superabsorbent polymer 12 is not particularly limited, but for example, the medium particle size is in the range of 50 μm to 600 μm. Alternatively, multiple layers of the first, second, and third SAP bags 1, 2, and 3 may be attached to both sides of a carrier sheet, and these layers may be stacked to form the upper, middle, and lower layers described above.

[0035] The amount of superabsorbent polymer 12 enclosed in each of the first, second, and third SAP bags 1, 2, and 3 is, for example, in the range of 9g to 15g, 4g to 11g, and 0.18g to 6g, respectively. If the amount of superabsorbent polymer 12 enclosed is within the above range, the mechanism of absorbing a portion of the bodily fluid from the upper layer to the lower layer, holding the other parts, and transferring the remainder to the lower layer proceeds smoothly, and the overflow of bodily fluids outside the toilet tank and the accumulation of bodily fluids at the bottom of the toilet tank are significantly suppressed. If the amount of superabsorbent polymer 12 enclosed in the first, second, and third SAP bags 1, 2, and 3 is less than the lower limit and / or exceeds the upper limit mentioned above, the balance of the mechanism of absorbing a portion of the bodily fluid from the upper layer to the lower layer, holding the other parts, and transferring the remainder to the lower layer is disrupted, and there is a tendency for the overflow of bodily fluids outside the toilet tank and the accumulation of bodily fluids at the bottom of the toilet tank to occur more easily.

[0036] The SAP bag 1A shown in Figure 2(b) is a modified version of the first, second, and third SAP bags 1, 2, and 3. SAP bag 1A has the same configuration as the first, second, and third SAP bags 1, 2, and 3, except that instead of a seal layer 11, a seal layer 11 and a non-seal layer 13 are formed alternately in the circumferential direction. The non-seal layer 13 is the region where the hydrophilic nonwoven fabrics on both sides are not adhered, and the internal and external spaces of SAP bag 1A are in communication via the non-seal layer 13. The circumferential width of the non-seal layer 13 should be such that the superabsorbent polymer 12 inside does not leak out of SAP bag 1A. Note that since SAP bags 1 and 2 are thin and folded into a nearly flat shape, leakage of the superabsorbent polymer 12 to the outside is unlikely even if multiple non-seal layers 13 are present. By configuring the SAP bag 1A in this way, body fluids are introduced more uniformly into the SAP bag 1A from all directions, further reducing the possibility of gel blocking occurring.

[0037] Furthermore, considering the ease of stacking, SAP bags (not shown) having three-dimensional shapes such as cylindrical, triangular prism, square prism, or hexagonal prism may be constructed. For example, a cylindrical SAP bag may be constructed in accordance with the first, second, and third flat SAP bags 1, 2, and 3, with the height of the cylinder as the longitudinal dimension and the diameter of the circle at the base of the cylinder as the width dimension. Similarly, a polygonal prism SAP bag may be constructed in accordance with the first, second, and third flat SAP bags 1, 2, and 3, with the height of the prism as the longitudinal dimension and the diameter of the smallest circle inscribed in the polygon at the base of the prism as the width dimension.

[0038] Although the present invention has been described above using embodiments, it goes without saying that the technical scope of the present invention is not limited to the scope of the invention described in the above embodiments, and it will be clear to those skilled in the art that various modifications or improvements can be made to the above embodiments. Furthermore, it is clear from the claims that embodiments with such modifications or improvements may also be included in the technical scope of the present invention. [Explanation of Symbols]

[0039] 1. First SAP bag 2. Second SAP bag 3. Third SAP bag 1A SAP bag body 10 Bag body 11 sealing layer 12 Superabsorbent Polymers 13 Non-sealing layer

Claims

1. A portable toilet comprising stacked bags for storage, The bag body is A powder of superabsorbent polymer is sealed inside a bag made of liquid-permeable nonwoven fabric. It includes a first SAP bag and a second SAP bag of different dimensions. The first SAP bag has a length of 100 mm or more and 150 mm or less, a width of 90 mm or more and 150 mm or less, and a content of the superabsorbent polymer of 9 g / bag or more and 15 g / bag or less. The second SAP bag has a length of 60 mm or more and 120 mm or less, a width of 45 mm or more and 110 mm or less, and a content of the superabsorbent polymer of 4 g / bag or more and 11 g / bag or less. A portable toilet in which the first SAP bag and the second SAP bag are stacked in this order on top of the portable toilet.

2. The aforementioned bag body includes, in addition to the first SAP bag body and the second SAP bag body, a third SAP bag body. The portable toilet according to claim 1, wherein the third SAP bag has a length of 30 mm or more and 80 mm or less, a width of 9 mm or more and 65 mm or less, and a content of the superabsorbent polymer of 0.18 g / bag or more and 6 g / bag or less, and is stacked on the bottom layer of the portable toilet.

3. The apparent area (mm²) of each of the first, second, and third SAP bags, expressed as length × width. ２ The portable toilet according to claim 2, wherein the order of the first SAP bag > the second SAP bag > the third SAP bag.

4. The portable toilet according to claim 2 or claim 3, wherein the number of the first SAP bag, the second SAP bag, and the third SAP bag inside the portable toilet is such that the number of the first SAP bag < the second SAP bag < the third SAP bag.

5. The portable toilet according to any one of claims 1 to 4, wherein the absorption capacity of 0.9% physiological saline solution per gram of superabsorbent polymer in the bag is 30 g or more and 70 g or less.

6. A method for manufacturing a portable toilet in which bags are stacked and stored, The aforementioned bag is made of a liquid-permeable nonwoven fabric and contains a powder of a superabsorbent polymer sealed inside. First, a third SAP bag, having a length of 30 mm to 80 mm, a width of 9 mm to 65 mm, and a superabsorbent polymer content of 0.18 g / bag to 6 g / bag, is placed in the bottom layer of the portable toilet. Next, a second SAP bag, having a length of 60 mm or more and 120 mm or less, a width of 45 mm or more and 110 mm or less, and a superabsorbent polymer content of 4 g / bag or more and 11 g / bag or less, is placed in the upper part of the third SAP bag. Furthermore, a first SAP bag, having a length of 100 mm or more and 150 mm or less, a width of 90 mm or more and 150 mm or less, and a superabsorbent polymer content of 9 g / bag or more and 15 g / bag or less, is placed in the upper part of the second SAP bag. A method for manufacturing portable toilets.

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