Pet sheet and packaging body

Abstract

To provide a pet sheet capable of effectively reducing time and effort of a user when using the pet sheet and promoting use of the pet seat.SOLUTION: A pet sheet comprises a body part including a surface sheet, a back sheet, and an absorber. The back sheet includes, on a back surface thereof, a coupling surface to be coupled with a treatment sheet with it exposed to the outside. The body part includes a folding line formed thereon, the folding line for folding the body part in two such that the back surface of the body part becomes inside. The coupling surface 7a is so configured that in a state where a first portion 11 located on one side with respect to the folding line L1 is located above a second portion 12 located on the other side with respect to the folding line L1, when only the first portion 11 of the body part in a twofold state folded in two along the folding line L1 is held, the second portion 12 is naturally separated from the first portion 11 to release the twofold state.SELECTED DRAWING: Figure 7

Description

[Technical field]

[0001] The present disclosure relates to a pet sheet and a packaging body. [Background technology]

[0002] 2. Description of the Related Art Conventionally, animal excrement disposal sheets (hereinafter referred to as "disposal sheets") for disposing of excrement from pets such as dogs have been known (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2003-92940 A Summary of the Invention [Problem to be solved by the invention]

[0004] Pets such as dogs tend to avoid urine marks on the disposal sheet when urinating. This causes a problem that pets urinate in an abnormal posture to avoid urine marks, resulting in urine being discharged outside the disposal sheet. In order to avoid such a problem, many users replace disposal sheets with new sheets even though there is still usable marginal area (area that can absorb new urine) on the disposal sheet. However, replacing a still usable disposal sheet with a new sheet is not appropriate from the viewpoint of environmental protection, and users themselves feel guilty.

[0005] As a method for solving the above problem, a method is known in which a parent sheet (a disposal sheet) and a child sheet (a pet sheet smaller than the parent sheet) are used in combination, and when a pet excretes (urinates) on the child sheet, only the child sheet is replaced. This method allows one disposal sheet to be used for a longer period of time than before, which can improve both environmental protection and the mental health of the user. On the other hand, in order to attach the pet sheet to the disposal sheet as described above, a certain amount of work is required, such as removing the pet sheet from a package, preparing the pet sheet so that it can be attached to the disposal sheet, and then attaching the pet sheet to the disposal sheet. If such work is too much work, the user may feel burdened by the act of attaching the pet sheet, and the use of the pet sheet may not be promoted.

[0006] Therefore, one aspect of the present disclosure aims to provide a pet sheet that can effectively reduce the effort required by a user when using the pet sheet and promote the use of the pet sheet, and a packaging body for containing the pet sheet. [Means for solving the problem]

[0007] A pet sheet according to one aspect of the present disclosure is a pet sheet that is used by being overlaid on an area of ​​an animal waste disposal sheet that absorbs animal waste, and comprises a main body having a liquid permeable top sheet, a back sheet located on the opposite side to the top sheet, and an absorbent disposed between the top sheet and the back sheet, the back sheet having a back surface facing the side opposite to the side facing the top sheet, and a bonding surface that is bonded to the animal waste disposal sheet is provided on the back surface with the bonding surface exposed to the outside, the main body has a fold line formed therein for folding the main body in half so that the back surface faces inward, and the bonding surface is configured such that a first portion of the main body that is located on one side of the fold line is positioned higher than a second portion of the main body that is located on the other side of the fold line, and when only the first portion of the main body in a folded state along the fold line is held, the second portion naturally moves away from the first portion and the folded state is released. .

[0008] A pet sheet according to another aspect of the present disclosure is a pet sheet used by overlaying an area of ​​an animal waste disposal sheet that absorbs animal waste, the pet sheet comprising a main body having a liquid permeable top sheet, a back sheet located on the opposite side to the top sheet, and an absorbent disposed between the top sheet and the back sheet, the back sheet having a back surface facing the side opposite to the side facing the top sheet, the back surface having a bonding surface that is bonded to the animal waste disposal sheet and exposed to the outside, the main body having a fold line that allows the main body to be folded in half so that the back surface is on the inside, the bonding surfaces are arranged so that when folded in half along the fold line, a part of the bonding surface located in a first portion of the main body located on one side of the fold line faces a part of the bonding surface located in a second portion of the main body located on the other side of the fold line, and the edge of the main body parallel to the fold line is formed by a flap portion in which no absorbent is present.

[0009] A packaging body according to yet another aspect of the present disclosure is a packaging body containing a plurality of pet sheets which are used by layering them on the area of ​​an animal waste disposal sheet which absorbs animal waste, the pet sheets comprising a liquid permeable top sheet, a back sheet located on the opposite side of the top sheet, and an absorbent disposed between the top sheet and the back sheet, the back sheet having a back surface facing the opposite side to the side facing the top sheet, the back surface being provided with a joining surface which is joined to the animal waste disposal sheet, the plurality of pet sheets contained in the packaging body being folded so that their back surfaces are facing inwards, and are arranged so that the top sheets of adjacent pet sheets are in face-to-face contact with each other. Effect of the Invention

[0010] According to the present disclosure, it is possible to provide a pet sheet and a packaging body for containing the pet sheet that can effectively reduce the effort required by the user when using the pet sheet and promote the use of the pet sheet. [Brief description of the drawings]

[0011] [Figure 1] 1A and 1B are diagrams illustrating an example of how to use a pet sheet according to an embodiment. [Diagram 2] FIG. 2 is a plan view of the pet sheet as viewed from the front side. [Diagram 3] FIG. 2 is a plan view of the pet sheet as seen from the back side. [Figure 4] 4 is a schematic diagram of a cross-sectional structure of the pet sheet taken along line IV-IV in FIG. 2. [Diagram 5] 3 is a schematic diagram of a cross-sectional structure of the pet sheet taken along line VV in FIG. 2. [Figure 6] FIG. 4 is a plan view showing the pet sheet folded in half. [Figure 7] 11 is a schematic side view of the pet sheet transitioning from a folded state to an unfolded state. FIG. [Figure 8] 11A and 11B are diagrams showing examples of the structure of a joint portion provided on the back surface of the pet sheet. [Figure 9]11A and 11B are diagrams showing examples of the arrangement of bonding surfaces provided on the rear surface of the pet sheet. [Figure 10] 11A and 11B are diagrams showing examples of the arrangement of bonding surfaces provided on the rear surface of the pet sheet. [Figure 11] 11A and 11B are diagrams showing examples of the arrangement of bonding surfaces provided on the rear surface of the pet sheet. [Figure 12] 11A and 11B are diagrams showing examples of the arrangement of bonding surfaces provided on the rear surface of the pet sheet. [Figure 13] FIG. 11 is a plan view of a first modified example of the main body portion as viewed from the top sheet side. [Figure 14] 14 is a schematic diagram of the pet sheet of FIG. 13 folded in four, as viewed from the side. [Figure 15] 1 is a schematic diagram of a cross-sectional structure of a packaging body according to one embodiment. [Figure 16] FIG. 11 is a plan view of a second modified example of the main body portion as viewed from the back sheet side. [Figure 17] 17 is a plan view showing the pet sheet of FIG. 16 folded in half. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] At least the following aspects 1 to 21 become apparent from the description of this specification and the accompanying drawings.

[0013] (Aspect 1) A pet sheet to be used by overlapping an area of ​​an animal waste disposal sheet for absorbing animal waste, the area having absorbed the animal waste, A main body portion having a liquid-permeable top sheet, a back sheet located on the opposite side to the top sheet, and an absorbent body disposed between the top sheet and the back sheet, The back sheet has a back surface facing the opposite side to the side facing the top sheet, The back surface has a bonding surface that is bonded to the animal waste disposal sheet and is exposed to the outside, A folding line is formed on the main body portion for folding the main body portion in half so that the back surface is on the inside, The joining surface is configured such that a first portion of the main body portion located on one side of the folding line is located higher than a second portion of the main body portion located on the other side of the folding line, and when only the first portion of the main body portion in a folded state in which the main body portion is folded in half along the folding line is held, the second portion naturally separates from the first portion and the folded state is released. Pet sheet.

[0014] In the first aspect, when using the pet sheet folded in half, the folded state can be released by simply holding the pet sheet with one hand without applying any special force, and the pet sheet can be attached to the animal waste disposal sheet. In addition, the joining surface on the back surface of the pet sheet is exposed to the outside, and there is no cover sheet (such as release paper) that covers the joining surface, so there is no need to peel off such a cover sheet when using the pet sheet. Therefore, according to the above pet sheet, the user's effort when using the pet sheet can be effectively reduced, and the use of the pet sheet can be promoted.

[0015] (Aspect 2) The joining surface is arranged such that, in the folded state, at least a part of the joining surface arranged on the first portion faces a part of the joining surface arranged on the second portion, The bonding strength between the bonding surfaces is set so that when the first portion is positioned above the second portion and only the first portion of the pet sheet in the folded state is held, the second portion is separated from the first portion by its own weight, and the folded state is released. A pet sheet according to embodiment 1.

[0016] According to aspect 2, by setting the bonding strength between the bonding surfaces so that the folded state is released by the weight of the second part, it is possible to realize a configuration that achieves the effects of aspect 1 described above while making it possible to arrange the bonding surfaces so that they come into contact with each other when folded in half (i.e., while ensuring freedom in the arrangement of the bonding surfaces).

[0017] (Aspect 3) The joining surfaces are disposed on the back surface so that the joining surfaces do not face each other in the folded state. A pet sheet according to embodiment 1.

[0018] According to the third aspect, since it is possible to prevent the joining surfaces from joining together when the folding device is folded in half, it is possible to easily realize a configuration that exhibits the effects of the first aspect described above.

[0019] (Aspect 4) In a region along a second edge portion opposite to a first edge portion along the folding line of the main body portion in the folded state, a length along the second edge portion of the bonding region where the bonding surface is provided is shorter than a length along the second edge portion of a non-bonding region where the bonding surface is not provided. A pet sheet according to any one of aspects 1 to 3.

[0020] According to aspect 4, a structure can be realized in the non-bonded area along the second edge portion that allows a finger to be easily inserted inside the main body portion in the folded state (between the first and second parts), making it easy to release the folded state and make the pet sheet ready to be attached to the animal waste disposal sheet.

[0021] (Aspect 5) In a region along a third edge portion that is connected to a first edge portion along the folding line of the main body portion in the folded state and intersects with the first edge portion, a length along the third edge portion of the bonding region in which the bonding surface is provided is shorter than a length along the third edge portion of a non-bonding region in which the bonding surface is not provided. A pet sheet according to any one of aspects 1 to 4.

[0022] According to aspect 5, a structure can be realized in the non-bonded area along the third edge portion that allows a finger to be easily inserted inside the main body portion in the folded state (between the first and second parts), making it easy to release the folded state and make the pet sheet ready to be attached to the animal waste disposal sheet.

[0023] (Aspect 6) The bonding surface is arranged so as not to overlap the folding line. A pet sheet according to any one of aspects 1 to 5.

[0024] According to the sixth aspect, the bonding surface does not deform (bend) even when the main body is folded in half, so that the bonding surface can be appropriately maintained in a parallel state, thereby preventing the bonding function of the bonding surface to the animal waste disposal sheet from being impaired by folding the main body in half.

[0025] (Aspect 7) The binding surface is a hook surface having a plurality of hooks. A pet sheet according to any one of aspects 1 to 6.

[0026] According to the seventh aspect, a configuration in which the bonding surface is exposed to the outside (that is, a configuration in which it is not necessary to cover the bonding surface with a cover sheet such as release paper before the pet sheet is used) can be easily realized.

[0027] (Aspect 8) The height of the hook is 45 μm to 350 μm. A pet sheet according to embodiment 7.

[0028] According to aspect 8, by setting the height of the hook within the above range and keeping the connection strength of the hook below a certain level, it is possible to preferably realize a configuration that allows the pet sheet to be connected to the animal waste disposal sheet while easily opening the main body from a folded state.

[0029] (Aspect 9) The back surface has a non-bonding surface on which the bonding surface is not provided, At least a portion of the non-binding surface facing the binding surface in the folded state is formed of a film that does not engage with the hook. A pet sheet according to embodiment 7 or 8.

[0030] According to aspect 9, it is possible to reliably prevent the opposing connecting surfaces (hooks) and non-connecting surfaces (film) from connecting (engaging) with each other when folded in half, thereby making it possible to preferably realize a configuration that makes it easy to change the main body from a folded in half state to an unfolded state.

[0031] (Aspect 10) The hook surface is formed by a front surface of a hook sheet adhered to the back surface, The hook sheet has a sheet edge along an edge different from a first edge along the folding line of the main body portion in the folded state, The sheet edge is not adhered to the back surface. A pet sheet according to any one of aspects 7 to 9.

[0032] According to the tenth aspect, the back sheet and the edge of the sheet are not adhered to each other but are separated from each other, so that it is possible to realize a configuration in which the main body can be easily opened from the folded state.

[0033] (Aspect 11) The main body has two second folding lines formed on both sides of the folding line for folding the main body in half again to a four-fold state. A pet sheet according to any one of aspects 1 to 10.

[0034] According to aspect 11, the pet sheet can be folded more compactly, which improves the storability and storage properties of the pet sheet.

[0035] (Aspect 12) The joining surface is arranged so as not to overlap both the folding line and the two second folding lines. A pet sheet according to embodiment 11.

[0036] According to the twelfth aspect, the joining surface does not deform (bend) even when the main body is folded in four, so that the joining surface can be appropriately maintained in a parallel state, thereby preventing the joining function of the joining surface to the animal waste disposal sheet from being impaired by folding the main body in four.

[0037] (Aspect 13) the two second folding lines have a third folding line for folding the main body portion so that the top sheet is on the inside in the folded-in-four state; The bonding surface is provided at least in an area opposite to the side where the third folding line is located. A pet sheet according to embodiment 11 or 12.

[0038] In the thirteenth aspect, the joining surface is disposed at least in the area that is bent so as to bend away from the animal waste collection sheet when the pet sheet is used by overlapping it with the animal waste collection sheet, thereby making it possible to store the pet sheet in a folded-in-four state, while preventing the above-mentioned area of ​​the pet sheet from rolling up from the animal waste collection sheet when the pet sheet is opened from the folded-in-four state and used.

[0039] (Aspect 14) When the main body is folded in half, a region along a second edge portion opposite to a first edge portion along the folding line has a color different from that of the region in which the absorbent body is disposed when viewed from the topsheet side. A pet sheet according to any one of aspects 1 to 13.

[0040] According to aspect 14, when the pet sheet folded in half is viewed from the outside (the top sheet side), the position of the opening (the edge opposite the fold line) can be visually and easily grasped, thereby improving convenience for the user.

[0041] (Aspect 15) A region along a third edge portion that is connected to the first edge portion and intersects with the first edge portion, excluding a region along the second edge portion, has the same color as the region in which the absorbent body is disposed when viewed from the top sheet side. A pet sheet according to embodiment 14.

[0042] According to aspect 15, by making the color of the area along the second edge a different color from the area where the absorbent is placed, the position of the opening can be easily grasped, while by making the color of the area along the third edge the same color as the area where the absorbent is placed, the discomfort felt by a pet attempting to defecate on the animal waste disposal sheet can be reduced.

[0043] (Aspect 16) The rigidity of the region along the second edge portion of the main body portion is lower than the rigidity of the region of the main body portion in which the absorbent body is disposed. A pet sheet according to embodiment 14 or 15.

[0044] According to aspect 16, the opening (the area along the second edge) is formed in a different color from the area where the absorbent is arranged, making it easy to visually grasp, and since the rigidity of the opening is reduced, it becomes easy to grasp the opening with one's hand and open the pet sheet in a folded state.

[0045] (Aspect 17) The ratio of cellulose fibers having hydroxyl groups in the absorbent body is 35% or less. A pet sheet according to any one of aspects 1 to 16.

[0046] According to aspect 17, by folding the main body in half, it is possible to reduce creases along the fold line, which can reduce the discomfort felt by pets when the pet sheet is placed on the animal waste collection sheet.

[0047] (Aspect 18) A pet sheet to be used by overlapping an area of ​​an animal waste disposal sheet for absorbing animal waste, the area having absorbed the animal waste, A main body portion having a liquid-permeable top sheet, a back sheet located on the opposite side to the top sheet, and an absorbent body disposed between the top sheet and the back sheet, The back sheet has a back surface facing the opposite side to the side facing the top sheet, The back surface has a bonding surface that is bonded to the animal waste disposal sheet and is exposed to the outside, A folding line is formed on the main body portion so that the main body portion can be folded in half with the back surface facing inward, the joining surface is arranged such that, in a folded state in which the main body is folded in half along the folding line, a part of the joining surface arranged in a first portion of the main body that is located on one side of the folding line faces a part of the joining surface arranged in a second portion of the main body that is located on the other side of the folding line; The edge of the main body portion parallel to the folding line is formed by a flap portion in which the absorbent body is not present. Pet sheet.

[0048] As in embodiment 18, by forming the edge of the main body part parallel to the folding line (i.e., the edge of the main body part located on the opposite side of the folding line when folded in half) with a flap part with low rigidity, the edge part can be easily pinched by hand, and the pet sheet folded in half can be easily opened. Note that embodiment 18 can be arbitrarily combined with the configurations of embodiments 1 to 17.

[0049] (Aspect 19) A package containing a plurality of pet sheets to be used by overlapping an area of ​​an animal waste disposal sheet for absorbing animal waste, the area being covered with the pet sheets, The pet sheet is A liquid-permeable surface sheet; A back sheet located on the opposite side to the top sheet; An absorbent body disposed between the top sheet and the back sheet, The back sheet has a back surface facing the opposite side to the side facing the top sheet, The back surface is provided with a bonding surface to be bonded to the animal waste disposal sheet, The pet sheets contained in the packaging body are arranged in a folded state in which the back surfaces are inward, so that the top sheets of the adjacent pet sheets are in surface contact with each other. packaging.

[0050] If the joining surface of one pet sheet contained in a package comes into contact with an adjacent pet sheet, when the one pet sheet is pulled out, the joining surface of the one pet sheet (or a cover sheet covering the joining surface, etc.) may rub against (or stick to) the adjacent pet sheet, which may cause a problem that the one pet sheet cannot be properly pulled out. According to aspect 19, by arranging and storing multiple pet sheets so that the surface sheets of adjacent pet sheets are in surface contact with each other, a configuration can be realized in which the joining surface of one pet sheet is unlikely to come into contact with the adjacent pet sheet, thereby avoiding the above-mentioned problem.

[0051] (Aspect 20) The joining surface of the pet sheet is not exposed to the outside in the folded state. The package of embodiment 19.

[0052] According to aspect 19, it is possible to reliably prevent the bonding surface of a pet sheet contained in a packaging body from coming into contact with an adjacent pet sheet, making it possible to properly and easily pull out a pet sheet from the packaging body.

[0053] (Aspect 21) At least a part of the back surface of the pet sheet is exposed to the outside in the folded state. The packaging of embodiment 20.

[0054] According to the embodiment 21, in addition to the effect of the embodiment 20 described above, which is that the joining surface is not exposed to the outside, the following additional effect can be obtained. That is, after the pet sheet is taken out of the package, the part of the pet sheet whose back surface is exposed to the outside in the folded state functions as a tab, so that the pet sheet can be easily unfolded from the folded state.

[0055] [Embodiment] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. In the following description, the same or corresponding elements are designated by the same reference numerals, and duplicated description will be omitted.

[0056] A configuration of a pet sheet 1 according to an embodiment will be described with reference to Figs. 1 to 8. First, an example of use of the pet sheet 1 will be described with reference to Fig. 1. Fig. 1 (A) shows a state after an animal excretes excretion U on an animal excretion disposal sheet (hereinafter referred to as a "disposal sheet") 100 that absorbs animal excretion (i.e., a state in which the excretion U is absorbed in a part of the disposal sheet 100). As an example, the disposal sheet 100 includes a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent disposed between the top sheet and the back sheet, and is formed in a rectangular shape in a plan view. The disposal sheet 100 is used to absorb and retain excretion excreted from animals such as pets and to keep the pet's breeding space clean. The disposal sheet 100 is placed in a predetermined position in the pet's breeding space (for example, indoors, etc.) in an unfolded state. The disposal sheet 100 may be placed directly on the floor or ground of the breeding space, or may be placed via a predetermined holder, tray, bedding, etc.

[0057] The animals to which the treatment sheet 100 is applied are, for example, animals kept as pets (hereinafter, simply referred to as "pets"). The pets to which the treatment sheet 100 is applied may be mammals such as dogs, cats, and hamsters, or may be non-mammalian creatures such as birds, reptiles, and amphibians.

[0058] The excrement U absorbed by the treatment sheet 100 is not particularly limited as long as it can be absorbed by the absorbent body of the treatment sheet 100. Examples of the excrement U include liquid or low-viscosity feces, urine, saliva, blood, other body fluids, etc.

[0059] Pets tend to avoid excrement marks (e.g., urine marks) on the disposal sheet 100 when excreting. This can cause a problem that pets urinate in an abnormal posture to avoid urine marks, resulting in urine being excreted outside the disposal sheet 100. In addition, replacing the disposal sheet 100 with a new sheet in order to avoid such a problem even though there is still usable blank area (area that can absorb new urine) on the disposal sheet 100 is not appropriate from the viewpoint of environmental protection and may make users (e.g., pet owners) feel guilty.

[0060] The pet sheet 1 is used to solve the above problems. That is, as shown in (B) of FIG. 1, the pet sheet 1 is used by overlapping the area (e.g., urine marks) of the disposal sheet 100 where the excrement U has been absorbed. This makes it possible to hide the urine marks on the disposal sheet 100, and to continue using the disposal sheet 100 while avoiding the problem that the pet urinates outside the disposal sheet 100 in an attempt to avoid the urine marks. As a result, it becomes possible to use one disposal sheet 100 for a longer period of time than before, which is an improvement in terms of both environmental protection and the mental health of the user.

[0061] An example of the structure of the pet sheet 1 will be described with reference to Figs. 2 to 5. Fig. 2 is a plan view of the pet sheet 1 as viewed from the front surface 2a side of the top sheet 2. Fig. 3 is a plan view of the pet sheet 1 as viewed from the back surface 3a side of the back sheet 3. Fig. 4 is a schematic diagram of the cross-sectional structure of the pet sheet 1 taken along line IV-IV in Fig. 2. Fig. 5 is a schematic diagram of the cross-sectional structure of the pet sheet 1 taken along line VV in Fig. 2. For convenience, in this specification, the thickness direction of the pet sheet 1 is represented as the Z-axis direction, the direction parallel to the folding line L1 of the pet sheet 1 described later is represented as the Y-axis direction, and the direction perpendicular to both the Z-axis direction and the Y-axis direction (i.e., the direction perpendicular to the folding line L1 when viewed from the Z-axis direction) is represented as the X-axis direction.

[0062] 2 and 3, the pet sheet 1 has a main body 10 formed in a rectangular shape in a plan view. However, the shape of the main body 10 in a plan view is not limited to a rectangular shape, and any shape such as a polygon, circle, or ellipse can be adopted. The size of the main body 10 can be appropriately set according to the size and type of the pet to which the pet sheet 1 is applied. The main body 10 has a top sheet 2, a back sheet 3, and an absorbent body 4.

[0063] The top sheet 2 is made of a sheet member having liquid permeability. The top sheet 2 is arranged on the side where the pet excrement is supplied when the pet sheet 1 is used (i.e., when the pet sheet 1 is placed on the disposal sheet 100). That is, the top sheet 2 is arranged on the side opposite to the side facing the disposal sheet 100 when the pet sheet 1 is used, and has a surface 2a exposed to the outside (upper). The top sheet 2 is made of a sheet member having liquid permeability so that the excrement supplied to the surface 2a can be moved to the back sheet 3 side. As an example, the sheet member constituting the top sheet 2 is made of white fibers. Examples of such sheet members include nonwoven fabrics such as air-through nonwoven fabrics, spunbond nonwoven fabrics, and point-bond nonwoven fabrics. The nonwoven fabric constituting the top sheet 2 may be hydrophilized with a surfactant. The top sheet of the disposal sheet 100 may also be made of a sheet member made of a nonwoven fabric similar to the top sheet 2 of the pet sheet 1.

[0064] The back sheet 3 is a sheet located on the opposite side of the top sheet 2 in the Z-axis direction. As an example, the back sheet 3 is formed in a rectangular shape similar to the top sheet 2 so as to completely overlap the top sheet 2 when viewed from the Z-axis direction. The back sheet 3 is arranged on the side facing the disposal sheet 100 when the pet sheet 1 is used, and has a back surface 3a facing the disposal sheet 100. As an example, the back sheet 3 can be made of a liquid-impermeable sheet material. Examples of the sheet material constituting the back sheet 3 include non-breathable resin films such as polyethylene and polypropylene, laminates in which nonwoven fabric is bonded to the resin film, and water-repellent or hydrophobic nonwoven fabrics. When the back sheet 3 is made of a liquid-impermeable sheet-like material in this way, it is possible to prevent the excrement excreted on the pet sheet 1 from leaking to the disposal sheet 100 side. However, as described above, since the disposal sheet 100 itself has a liquid-impermeable back sheet for preventing the leakage of excrement, there is no major problem even if the excrement excreted on the pet sheet 1 leaks to the disposal sheet 100 side. Therefore, the back sheet 3 may be made of a liquid-permeable sheet member. In this embodiment, the back surface 3a is formed of a material that is not bonded to the bonding surface 7a described below.

[0065] The absorbent 4 is disposed between the top sheet 2 and the back sheet 3. That is, the absorbent 4 is disposed on the opposite side of the top sheet 2 from the top surface 2a side, and is disposed on the opposite side of the back sheet 3 from the back surface 3a side. As an example, the absorbent 4 is formed in a rectangular shape that is slightly smaller than the main body 10 (top sheet 2 and back sheet 3) when viewed from the Z-axis direction, and is disposed in the center of the main body 10 excluding the peripheral edge part. As an example, the absorbent 4 is constituted by an absorbent core formed of an absorbent material for absorbing and holding excrement. The absorbent 4 may be constituted by a granular absorbent polymer. The absorbent polymer constituting the absorbent 4 may be any polymer capable of absorbing and holding liquid, and may be any highly water-absorbent polymer such as a polyacrylic acid-based, starch-based, or cellulose-based polymer. As an example, the absorbent 4 has a white color before use (i.e., when excrement is not absorbed or held). The configuration of the absorbent 4 is not limited to the above. For example, the absorbent body 4 may be formed by combining an absorbent core with a core wrap that covers the absorbent core.

[0066] As an example, the absorbent body 4 is disposed between two intermediate sheets 5, 6 and is sandwiched by the intermediate sheets 5, 6. The intermediate sheet 5 is disposed between the top sheet 2 and the absorbent body 4. The intermediate sheet 6 is disposed between the back sheet 3 and the absorbent body 4. In this embodiment, the intermediate sheets 5, 6 function as a core wrap that prevents the absorbent body 4 from losing its shape, etc.

[0067] As an example, the intermediate sheets 5, 6 are formed in rectangular shapes of the same size when viewed from the Z-axis direction. The width of the intermediate sheets 5, 6 in the Y-axis direction is the same as the width of the main body portion 10 (the top sheet 2 and the back sheet 3). On the other hand, the width of the intermediate sheets 5, 6 in the X-axis direction is shorter than the width of the main body portion 10 (the top sheet 2 and the back sheet 3). The intermediate sheets 5, 6 are disposed in the center of the main body portion 10 in the X-axis direction, excluding the peripheral edge portion. As a result, as shown in Figures 2, 3 and 4, the main body portion 10 is divided into an area A1 (first area) where the intermediate sheets 5, 6 are disposed in the center of the main body portion 10 in the X-axis direction, and an area A2 (second area) where the intermediate sheets 5, 6 are not disposed at both ends of the main body portion 10 in the X-axis direction.

[0068] As an example, the intermediate sheet 5 is made of tissue colored in a color other than white (for example, blue). Meanwhile, the intermediate sheet 6 is made of white tissue. Also, the top sheet 2, the back sheet 3, and the intermediate sheet 6 have a visible light transmittance equal to or higher than a predetermined value. Therefore, when the pet sheet 1 is viewed from the front surface 2a side, the blue color of the intermediate sheet 5 is visible in the area A1, and the white color of the top sheet 2 is visible in the area A2. Meanwhile, when the pet sheet 1 is viewed from the back surface 3a side, the white color of the absorber 4 is visible in the area where the absorber 4 is arranged in the area A1, the blue color of the intermediate sheet 5 is visible in the area where the absorber 4 is not arranged in the area A1, and the white color of the top sheet 2 is visible in the area A2. Thus, the color of the pet sheet 1 is different when viewed from the front surface 2a side and when viewed from the back surface 3a side. This allows the user of the pet sheet 1 to easily distinguish the front and back of the pet sheet 1 from the color of the pet sheet 1.

[0069] As shown in Figs. 3 to 5, the back surface 3a of the back sheet 3 is provided with a connecting portion 7 having a connecting surface 7a to be connected to the disposal sheet 100. The connecting portion 7 is provided with the connecting surface 7a exposed to the outside. That is, in the state before use of the pet sheet 1, a member such as a cover sheet that covers the connecting surface 7a is not provided. As an example, four rectangular connecting portions 7 are provided at the corners (four corners) of the back surface 3a. In this embodiment, each connecting portion 7 is arranged so that the outer edge of each connecting portion 7 is separated from the outer edge of the back surface 3a. However, each connecting portion 7 may be arranged so that the outer edge of each connecting portion 7 coincides with the outer edge of the back surface 3a.

[0070] The main body 10 is formed with a folding line L1 for folding the main body 10 in half so that the back surface 3a faces inward. As an example, the folding line L1 passes through the center position of the main body 10 in the X-axis direction and extends along a direction (Y-axis direction) perpendicular to the X-axis direction. The folding line L1 can be formed, for example, by a crease previously formed on the main body 10. As shown in Figs. 1 and 2, the main body 10 is divided into a first portion 11 located on one side (for example, the left side in Fig. 1) of the folding line L1 and a second portion 12 located on the other side (for example, the right side in Fig. 1) of the folding line L1. Note that the first portion 11 and the second portion 12 are symmetrical to each other, and therefore the first portion 11 and the second portion 12 may be reversed. That is, the first portion 11 may be regarded as the "second portion" and the second portion 12 may be regarded as the "first portion".

[0071] Fig. 6 shows the main body 10 folded in half along the folding line L1 so that the back surface 3a faces inward. More specifically, Fig. 6 is a plan view of the main body 10 folded in half, as viewed from the side facing the front surface 2a of the first portion 11. As shown in Fig. 6, the pet sheet 1 is configured so that it can be folded in half before use or the like, allowing it to be stored compactly.

[0072] FIG. 7 is a schematic diagram of the pet sheet 1 transitioning from a folded state to an unfolded state, as viewed from the side (in the direction along the folding line L1 (Y-axis direction)). The joint surface 7a (the joint surface 7a of each of the four joints 7 in this embodiment) provided on the pet sheet 1 is configured such that, when only the first part 11 of the main body 10 in a folded state is held with the first part 11 positioned above the second part 12 as shown in FIG. 7(A), the second part 12 naturally separates from the first part 11 and the folded state is released as shown in FIG. 7(B). Hereinafter, the function of naturally releasing the folded state and unfolding in this way is referred to as the "unfolding function". By the pet sheet 1 having the unfolding function, the pet sheet 1 can be easily unfolded (opened) from the folded state, improving the convenience of the user who uses the pet sheet 1.

[0073] In this embodiment, the four connecting parts 7 are arranged so as to be symmetrical with respect to the folding line L1. Specifically, in a folded state, the two connecting parts 7 provided in the first part 11 are arranged so as to face (overlap) the two connecting parts 7 provided in the second part 12. Therefore, when folded in half, the connecting surface 7a provided in the first part 11 and the connecting surface 7a provided in the second part 12 may come into contact with each other and be connected to each other. If the connecting surface 7a of the first part 11 and the connecting surface 7a of the second part 12 are firmly connected to each other, the unfolding function is not performed, and it is necessary to pull the connecting surfaces 7a apart with a strong force in order to unfold the pet sheet 1 from the folded state, which is troublesome for the user. Therefore, in this embodiment, in order to exert the unfolding function, the bonding strength between the opposing bonding surfaces 7a in the folded state is set so that when only the first part 11 of the main body 10 in the folded state is held with the first part 11 positioned above the second part 12, the second part 12 moves away from the first part 11 due to its own weight and the folded state is released. Hereinafter, the function of releasing the folded state and unfolding due to the own weight of the second part 12 as described above is referred to as the "weight unfolding function."

[0074] FIG. 8(A) is a schematic diagram showing a structural example of the joint 7 provided on the back surface 3a of the pet sheet 1. FIG. 8(B) is a partial enlarged view of the joint 7. As shown in FIG. 8, as an example, the joint 7 has a plurality of hooks 71 and a flat hook sheet 72 that supports and fixes the plurality of hooks 71. The hook sheet 72 is fixed to the back surface 3a via an adhesive layer 8, so that the joint 7 is fixed to the back surface 3a. The joint surface 7a of the joint 7 is formed by the surface (hook surface) of the hook sheet 72 on which the plurality of hooks 71 are provided. In this case, the setting of the joint strength between the joint surfaces 7a to exert the self-weight deployment function described above can be realized by adjusting the shape, height, and density (the number of hooks in a unit area, the distance between the hooks, etc.) of the plurality of hooks 71, as well as the contact area between the joint surfaces 7a that face each other (contact) when folded in half.

[0075] As shown in FIG. 8B, for example, each hook 71 may be composed of a columnar portion 71a and an umbrella portion 71b. The columnar portion 71a is a columnar portion standing upright from the hook sheet 72. The umbrella portion 71b is provided at the tip of the columnar portion 71a and has a hook diameter d1 larger than the diameter of the columnar portion 71a. When the pet sheet 1 is placed on the disposal sheet 100 as shown in FIG. 1B, the umbrella portion 71b of each hook 71 enters the space between the nonwoven fabrics constituting the top sheet of the disposal sheet 100 and engages with the top sheet. As a result, the pet sheet 1 is connected (engaged) to the disposal sheet 100 via the connecting portion 7.

[0076] As an example, the height h of the hook 71 is 45 μm to 350 μm. By setting the height h of the hook 71 in the above range and suppressing the connection strength of the hook 71 to a certain level or less, it is possible to preferably realize a configuration in which the pet sheet 1 can be connected to the disposal sheet 100 while the main body part 10 can be easily opened from the folded state. The height h of the hook 71 may be set to 45 μm to 150 μm. In this case, by suppressing the height h of the hook 71 to be lower, when the pet sheet 1 is connected to the disposal sheet 100, the protuberance of the pet sheet 1 at the connection part 7 can be suppressed, and the discomfort given to the pet can be reduced. In addition, the distance d2 between adjacent hooks 71 is set, for example, in the range of 70 μm to 410 μm. More preferably, the distance d2 between adjacent hooks 71 is set in the range of 120 μm to 300 μm. In this way, in order to exert the self-weight deployment function described above, other parameters (for example, the distance between the hooks) may be adjusted together with the height h of the hook 71.

[0077] [Effects of this embodiment] In the pet sheet 1, the joining surface 7a to be joined to the disposal sheet 100 is provided on the back surface 3a in a state exposed to the outside. In addition, the main body portion 10 is formed with a folding line L1 for folding the main body portion 10 in half so that the back surface 3a is on the inside. In addition, the pet sheet 1 has the above-mentioned unfolding function. As described above, the joining surface 7a provided on the back surface 3a of the pet sheet 1 is exposed to the outside, and a cover sheet (such as release paper) covering the joining surface 7a is not provided, so that the trouble of peeling off such a cover sheet does not occur when using the pet sheet 1. In addition, in this case, as described in the present embodiment, there is a risk that the joining surfaces 7a face each other (contact each other) in the folded state and are joined to each other, but since the joining surface 7a is configured to have the above-mentioned unfolding function, when using the pet sheet 1 in the folded state, the user can release the folded state by simply holding the pet sheet 1 with one hand without applying any special force, and the pet sheet 1 can be attached to the disposal sheet 100. Therefore, according to the pet sheet 1, the effort required by the user when using the pet sheet 1 can be effectively reduced, and the use of the pet sheet 1 can be promoted.

[0078] In addition, in the pet sheet 1, the bonding surfaces 7a are arranged so that at least a part of the bonding surface 7a arranged in the first portion 11 faces a part of the bonding surface 7a arranged in the second portion 12 when folded in two. In this embodiment, as an example, the bonding surfaces 7a are arranged so that all the bonding surfaces 7a (two bonding surfaces 7a) arranged in the first portion 11 completely overlap with all the bonding surfaces 7a (two bonding surfaces 7a) arranged in the second portion 12 by arranging the bonding surfaces 7a in line symmetry with respect to the folding line L1. With the bonding surfaces 7a arranged in this way, the pet sheet 1 has the above-mentioned self-weight unfolding function. That is, the bonding strength of each bonding surface 7a is adjusted so as to exert the self-weight unfolding function. By setting the bonding strength between the bonding surfaces 7a so that the folded state is released by the weight of the second portion 12, it is possible to arrange the bonding surfaces 7a so that they come into contact with each other when folded in half (i.e., while ensuring freedom in arrangement of the bonding surfaces 7a), while realizing a configuration that provides the above-mentioned effect (i.e., the effect of reducing the effort required by the user when using the pet sheet 1).

[0079] Whether or not the pet sheet 1 has the above-mentioned function of unfolding under its own weight can be confirmed by a unfolding test under its own weight as described below.

[0080] <An example of a self-weight deployment test> 1. Place the pet sheet 1 in a folded state with the main body 10 folded in half so that the first part 11 is positioned higher than the second part 12 as shown in (A) of Figure 7 on a horizontal surface (e.g. a horizontal floor surface). 2. Using a specific tool or by hand, hold only the first portion 11 without holding the second portion 12, and pull the pet sheet 1 upward while maintaining the first portion 11 in a position approximately parallel to the horizontal plane. 3. After performing the operation "2." above, if the first part 11 and the second part 12 move downwardly away from each other as shown in (B) of Figure 7 within a predetermined time (e.g., 10 seconds), it is determined that the above-mentioned gravity deployment function is present.

[0081] In the above operation "2.", the method of holding only the first portion 11 while making the first portion 11 approximately parallel to the horizontal plane is not particularly limited. For example, the first portion 11 may be held by sucking the surface 2a of the first portion 11 with a predetermined tool, or the first portion 11 may be held by pinching the edges of the first portion 11 (for example, the edges 10c on both sides facing each other in the Y-axis direction) with a person's fingers.

[0082] As shown in FIG. 6, in the region along the edge 10b (second edge) opposite to the edge 10a (first edge) along the folding line L1 of the main body 10 in the folded state, the length along the edge 10b of the bonding region A3 where the bonding surface 7a (bonding portion 7) is provided is shorter than the length along the edge 10b of the non-bonding region A4 where the bonding surface 7a is not provided. In this embodiment, both side edges in the X-axis direction in the unfolded state (see FIG. 2 and FIG. 3) (i.e., edges that overlap each other in the folded state) form the edge 10b. In this embodiment, since the bonding portions 7 are provided at the four corners of the back surface 3a, the bonding region A3 is formed near both side ends in the Y-axis direction, and one non-bonding region A4 is formed between two bonding regions A3. That is, in this embodiment, the length in the Y-axis direction of the region including the two bonding regions A3 is shorter than the length in the Y-axis direction of one non-bonding region A4. According to the above configuration, the length of the non-bonding area A4 in the Y-axis direction can be sufficiently secured, so that a structure can be realized in which a finger can be easily inserted inside the main body 10 in the folded state (between the first part 11 and the second part 12) in the non-bonding area A4 of the area along the edge 10b. As a result, it is easy to release the folded state and make the pet sheet 1 into a state where it can be attached to the treatment sheet 100.

[0083] As shown in FIG. 6, in the region along the edge 10c (third edge) that is connected to the edge 10a along the folding line L1 of the main body 10 in the folded state and intersects with the edge 10a, the length along the edge 10c of the bonding region A5 where the bonding surface 7a (bonding portion 7) is provided is shorter than the length along the edge 10c of the non-bonding region A6 where the bonding surface 7a is not provided. In this embodiment, both side edges in the Y-axis direction in the unfolded state (see FIG. 2 and FIG. 3) form the edge 10c. In this embodiment, since the bonding portions 7 are provided at the four corners of the back surface 3a, the bonding region A5 is formed near the edge 10b in the X-axis direction, and the non-bonding region A6 is formed on the edge 10a side of the bonding region A5. That is, in this embodiment, the length in the X-axis direction of one bonding region A5 is shorter than the length in the X-axis direction of one non-bonding region A6. According to the above configuration, the length of the non-bonding area A6 in the X-axis direction can be sufficiently secured, so that a structure can be realized in which a finger can be easily inserted inside the main body 10 in the folded state (between the first part 11 and the second part 12) in the non-bonding area A6 of the area along the edge 10c. As a result, it is easy to release the folded state and make the pet sheet 1 into a state where it can be attached to the treatment sheet 100.

[0084] 3, the bonding surface 7a is arranged so as not to overlap the folding line L1. According to the above configuration, even if the main body 10 is folded in half, the bonding surface 7a does not deform (does not bend), so the parallel state of the bonding surface 7a can be appropriately maintained. This makes it possible to avoid the bonding function of the bonding surface 7a to the treatment sheet 100 being impaired by the folding in half. Also, if the bonding surface 7a overlaps the folding line L1, it becomes difficult to fold the main body 10 in half along the folding line L1 if the bonding surface 7a (bonding portion 7) is made of a material having a relatively high rigidity. According to the above configuration, such a problem can also be avoided.

[0085] 8, the bonding surface 7a is configured by a hook surface (surface of the hook sheet 72) on which a plurality of hooks 71 are provided. That is, the bonding surface 7a is not configured by an adhesive surface such as HMA. With the above configuration, it is easy to realize a configuration in which the bonding surface 7a is exposed to the outside (that is, a configuration in which it is not necessary to cover the bonding surface 7a with a cover sheet such as release paper before use of the pet sheet 1).

[0086] Also, as shown in FIG. 6, the area along the edge 10b of the main body 10 in the folded state (in this embodiment, the area A2 where the absorbent 4 is not arranged) has a different color from the area where the absorbent 4 is arranged when viewed from the top sheet 2 side. In this embodiment, as described above, the area A2 along the edge 10b is visually recognized as white (the color of the top sheet 2) when viewed from the front surface 2a side. On the other hand, the area A1 including the area where the absorbent 4 is arranged is visually recognized as blue (the color of the intermediate sheet 5). According to the above configuration, when the pet sheet 1 in the folded state is viewed from the outside (the top sheet 2 side), it is possible to visually easily grasp the position of the opening (the edge 10b on the opposite side to the folding line L1), thereby improving the convenience for the user.

[0087] In addition, the region along the edge 10c (i.e., the region along both ends in the Y-axis direction of the main body 10) excluding the region A2 along the edge 10b (i.e., the region along the edge 10c of the region A1) has the same color as the region where the absorbent 4 is arranged when viewed from the top sheet 2 side. In this embodiment, as described above, when the pet sheet 1 is viewed from the front surface 2a side, the entire region A1 is visually recognized as blue (the color of the intermediate sheet 5) regardless of whether the absorbent 4 is arranged. According to the above configuration, the color of the region A2 along the edge 10b is different from the region where the absorbent 4 is arranged (part of the region A1), making it easy to grasp the position of the opening, while the color of the region along the edge 10c excluding the region A2 (i.e., the region outside the region A1 where the absorbent 4 is arranged) is the same color as the region where the absorbent 4 is arranged, thereby reducing the discomfort felt by a pet trying to excrete on the treatment sheet 100. That is, by minimizing the boundary where the color changes, it is possible to suppress the occurrence of discomfort caused by the color change. Also, when the color of the top sheet of the disposal sheet 100 (the color when viewed from the top sheet side) is made the same color (blue in this embodiment) as the area of ​​the pet sheet 1 where the absorbent 4 is arranged, the boundary between the pet sheet 1 and the disposal sheet 100 can be made less noticeable in the area near the edge 10c of the pet sheet 1. This can reduce the discomfort caused by the pet sheet 1 as described above.

[0088] In addition, the rigidity of the region along the edge 10b of the main body 10 (in this embodiment, the region A2 where the absorbent 4 is not arranged) is lower than the rigidity of the region in the main body 10 where the absorbent 4 is arranged (part of the region A1). That is, the region in which the absorbent 4 is arranged has a thickness greater than the region A2 by at least the amount of the absorbent 4, and therefore has a higher rigidity than the region A2. In other words, the region A2 is thinner and softer than the central part of the main body 10 (the region in which the absorbent 4 is arranged), and therefore is easily rolled up when opening the pet sheet 1 folded in half. Therefore, according to the above configuration, the opening (the region along the second edge) formed in a different color from the region in which the absorbent 4 is arranged can be visually easily grasped, and the lower rigidity of the opening makes it easy to open the pet sheet 1 folded in half by pinching the opening with your hand.

[0089] The ratio of cellulose fibers having hydroxyl groups in the absorbent body 4 may be 35% or less. According to the above configuration, the creases along the fold line L1 that occur in the main body 10 when folded in half can be reduced. That is, the degree of the creases along the fold line L1 can be reduced to a level that allows identification of the fold location when folding the pet sheet 1 in half, while making the pet sheet 1 as inconspicuous and flat as possible when unfolded. This reduces the discomfort felt by the pet when the pet sheet 1 is placed on the disposal sheet 100.

[0090] As shown in FIG. 4, the edge 10b of the main body 10 parallel to the folding line L1 is formed by the flap F where the absorbent 4 is not present. That is, the peripheral edge of the main body 10 has a lower rigidity than the area where the absorbent 4 is arranged. According to the above configuration, the edge 10b of the main body 10 parallel to the folding line L1 (i.e., the edge 10b of the main body 10 located on the opposite side of the folding line L1 when folded in two) is formed by the flap F with a low rigidity, making it easier to pick up the edge 10b with your hands and making it easier to open the pet sheet 1 folded in two. This effectively reduces the user's effort when using the pet sheet 1, and ultimately promotes the use of the pet sheet 1.

[0091] [Variations] Although the embodiment of the present disclosure has been described above, the present disclosure is not limited to the above embodiment. The material and shape of each component are not limited to the above-mentioned material and shape, and various materials and shapes can be adopted. In addition, some components included in the configuration of the above-mentioned embodiment may be changed or omitted, or other components may be added.

[0092] For example, in the above embodiment, a hook surface is exemplified as an example of the joining surface 7a, but the joining surface 7a may be configured by a surface other than a hook surface. For example, the joining surface 7a may be an adhesive surface or a glue surface (for example, a surface coated with glue similar to the back of a stamp).

[0093] In the above embodiment, the pet sheet 1 does not necessarily have to have a self-weight unfolding function. Even in this case, the pet sheet 1 folded in half can be opened relatively easily by forming the flap portion F as described above, which reduces the user's effort.

[0094] (Modification of the arrangement of the bonding surfaces) The shape and arrangement of the joint surface 7a (joint 7) are not limited to the above embodiment. For example, as a modified example of the configuration in which the joint surface 7a is arranged symmetrically with respect to the folding line L1 as in the above embodiment, the configuration shown in FIG. 9 and FIG. 10 can be mentioned. In the example of FIG. 9(A), two joint surfaces 7a extending in a strip shape in the Y-axis direction are arranged along both side edges (edges 10b) in the X-axis direction. In the example of FIG. 9(B), four joint surfaces 7a formed in a shape other than a rectangle (for example, a circular shape) are arranged at the four corners of the back surface 3a. In addition, the joint surfaces 7a may be arranged so as to overlap the folding line L1 as long as they have flexibility to be bent along the folding line L1. In the example of FIG. 10(A), two joint surfaces 7a extending in a strip shape in the X-axis direction are arranged along both side edges (edges 10c) in the Y-axis direction. In the example of FIG. 10(B), one coupling surface 7a (in this example, a rectangular coupling surface 7a) is disposed in the center of the rear surface 3a.

[0095] The joining surfaces 7a may be arranged on the back surface 3a so that the joining surfaces 7a do not face each other when folded in two. For example, the joining surfaces 7a may be arranged as shown in Figs. 11 and 12. In the example of Fig. 11(A), one joining surface 7a is arranged in the center of the Y-axis direction along the edge 10b of the first portion 11. In addition, two joining surfaces 7a are arranged along both side edges (edges 10c) in the Y-axis direction along the edge 10b of the second portion 12. The example of Fig. 11(B) differs from the example of Fig. 11(A) in that two joining surfaces 7a arranged apart from each other in the Y-axis direction are arranged in the center of the Y-axis direction along the edge 10b of the first portion 11. 12A, the bonding surface 7a extending in the Y-axis direction is arranged in a region on one side (lower side in the figure) in the Y-axis direction of the portion along the edge 10b of the first portion 11, and the bonding surface 7a extending in the Y-axis direction is arranged in a region on the other side (upper side in the figure) in the Y-axis direction of the portion along the edge 10b of the second portion 12. In the example of FIG. 12B, the bonding surface 7a extending in the X-axis direction is arranged in a portion along the edge 10c on one side (lower side in the figure) of the first portion 11, and the bonding surface 7a extending in the X-axis direction is arranged in a portion along the edge 10c on the other side (upper side in the figure) of the second portion 12.

[0096] According to a configuration in which the joining surfaces 7a do not face each other (do not contact each other) when folded in half as illustrated in Figures 11 and 12, it is possible to prevent the joining surfaces 7a from joining together when folded in half. Therefore, for example, by constructing the back surface 3a from a material that is difficult to join with the joining surfaces 7a, the above-mentioned unfolding function can be optimally exhibited.

[0097] 11 and 12, when the back surface 3a is composed of the joining surface 7a and a non-joining surface (surface of the back surface 3a other than the joining surface 7a) on which the joining surface 7a is not provided, and at least a part of the non-joining surface faces the joining surface 7a in the folded-in state, at least a part of the non-joining surface that faces the joining surface 7a in the folded-in state (for example, part B shown by a broken line in (A) of FIG. 12) may be formed of a film that does not engage with the hook 71. According to the above configuration, the joining surface 7a (hook 71) and the non-joining surface (part B formed of a film) that face each other in the folded-in state can be reliably prevented from joining (engaging) with each other, and therefore a configuration that makes it easy to unfold the main body 10 from the folded-in state can be suitably realized. In other words, the unfolding function described above can be reliably exhibited.

[0098] From the viewpoint of reliably preventing the joining surface 7a from joining to the non-joining surface, it is preferable that not only the portion B of the non-joining surface that faces the joining surface 7a in the folded state, but the entire non-joining surface is formed of a film that does not engage with the hooks 71. For example, the entire back surface 3a may be configured as a film surface that does not engage with the hooks 71.

[0099] In addition, in the above embodiment (FIGS. 1 to 8) and some modified examples (FIGS. 9 to 12), a configuration in which the joining surfaces 7a completely overlap when folded in half (FIGS. 1 to 10) and a configuration in which the joining surfaces 7a do not overlap at all when folded in half (FIGS. 11 and 12) are exemplified, but a configuration in which the joining surfaces 7a partially overlap when folded in half may be adopted. That is, a configuration in which a part of one joining surface 7a overlaps with another joining surface 7a and another part of the one joining surface 7a overlaps with a non-joining surface (the back surface 3a on which the joining surface 7a is not provided) may be adopted. In this way, according to the configuration in which the opposing joining surfaces 7a partially overlap each other when folded in half, the joining strength between the joining surfaces 7a can be weakened compared to the configuration in which the opposing joining surfaces 7a completely overlap each other when folded in half, so that the above-mentioned self-weight deployment function can be easily exhibited.

[0100] 6, the hook sheet 72 (joint 7) has a sheet edge E (in the example of FIG. 6, an edge E along edge 10b) along an edge (i.e., edge 10b or edge 10c) different from edge 10a along the folding line L1 of the main body 10 in the folded state, and the sheet edge E does not have to be adhered to the back surface 3a. That is, the adhesive layer 8 (see FIG. 8A) may not be provided between the sheet edge E and the back surface 3a. According to the above configuration, the back sheet 3 and the sheet edge E are separated without being adhered to each other, so that the main body can be easily opened from the folded state. More specifically, when opening the pet sheet 1 by pinching the portion (for example, flap portion F (see Figure 4)) along the edge of the main body portion 10 along which the sheet edge E runs (edge ​​10b in the example of Figure 6), it becomes easier to roll up the flap portion F by the amount of the sheet edge E, making it possible to easily open the pet sheet 1 folded in half.

[0101] The main body 10 may be configured so that it can be folded in half again to a four-fold state. Hereinafter, a main body 10A as an example of the above configuration will be described with reference to Figs. 13 and 14. Fig. 13 is a plan view of the main body 10A in an unfolded state, as seen from the front surface 2a side. Fig. 14 is a schematic view of the main body 10A in a four-fold state, as seen from the side.

[0102] 13 and 14, in the main body 10A, a folding line L2 (second folding line, third folding line) is formed between the edge 10b of the first portion 11 and the folding line L1. Also, a folding line L3 (second folding line) is formed between the edge 10b of the second portion 12 and the folding line L1. That is, in the main body 10A, two folding lines L2 and L3 for folding the folded state in two again to a folded state in four are formed on both sides of the folding line L1.

[0103] In the main body 10A, the first portion 11 is further divided into two portions (two portions that overlap each other when folded in four) by the folding line L2. Specifically, the first portion 11 is divided into a portion 111 between the edge 10b of the first portion 11 and the folding line L2, and a portion 112 between the folding line L2 and the folding line L1. Similarly, the second portion 12 is further divided into two portions (two portions that overlap each other when folded in four) by the folding line L3. Specifically, the second portion 12 is divided into a portion 121 between the folding line L1 and the folding line L3, and a portion 122 between the folding line L3 and the edge 10b of the second portion 12.

[0104] In this example, as shown in FIG. 14, when viewed from the front surface 2a side of the main body 10A, the folding lines L1 and L3 correspond to mountain folds, and the folding line L2 corresponds to a valley fold. That is, when viewed from the front surface 2a side of the main body 10A, the main body 10A can be folded in two (see FIG. 6 and FIG. 7A) by first folding the main body 10A in two along the folding line L1. In the folded in two state, the two folding lines L2 and L3 are arranged so as to overlap. The main body 10A is further folded in two along the folding lines L2 and L3 from this folded in two state to become a folded in four state as shown in FIG. 14. According to the configuration in which the two folding lines L2 and L3 for further folding in two from the folded in two state to a folded in four state are formed on both sides of the folding line L1 as described above, the pet sheet 1 can be folded more compactly, and therefore the storability and storage property of the pet sheet 1 can be improved.

[0105] In addition, in the main body 10A configured to be folded in four (see FIG. 14) as described above, the bonding surface 7a is arranged so as not to overlap any of the folding lines L1, L2, and L3. In the example of FIG. 13 and FIG. 14, each bonding surface 7a is arranged outside the folding lines L2 and L3 (i.e., the portion 111 and the portion 122). According to the above configuration, even if the main body 10A is folded in four, the bonding surface 7a does not deform (does not bend), so that the parallel state of the bonding surface 7a can be appropriately maintained. This makes it possible to avoid the bonding function of the bonding surface 7a to the treatment sheet 100 being impaired by folding the treatment sheet in four.

[0106] In addition, one of the two folding lines L2, L3, the folding line L2, is a third folding line (i.e., a line corresponding to a valley fold when viewed from the front surface 2a side) for folding the main body portion 10A so that the top sheet 2 is on the inside in the folded state. The joining surface 7a is provided at least in the area (i.e., the portion 111) opposite the side where the folding line L1 is located with respect to the third folding line (folding line L2). In the above configuration, the joining surface 7a is disposed at least on the back surface 3a of the area (i.e., the portion 111) that is shaped to bend in a direction away from the disposal sheet 100 when the pet sheet 1 is used by overlapping it with the disposal sheet 100. This allows the pet sheet 1 to be stored in a folded state, while preventing the portion 111 of the pet sheet 1 from rolling up from the disposal sheet 100 when the pet sheet 1 is used by opening it from the folded state.

[0107] (packaging) 15 is a schematic diagram showing an example of a packaging body 50 containing a plurality of (for example, 10) pet sheets 1. The packaging body 50 is formed, for example, in the shape of a bag having a substantially rectangular parallelepiped shape when a plurality of pet sheets 1 are contained therein. The packaging body 50 is made of a synthetic resin such as polyethylene, polypropylene, or polyethylene terephthalate. For example, the packaging body 50 has a break line (not shown) formed at a predetermined position, and by breaking the packaging body 50 along the break line, it is possible to form an opening for taking out the pet sheet 1 contained in the packaging body 50.

[0108] The packaging body 50 contains multiple pet sheets 1 in the following manner. That is, the multiple pet sheets 1 contained in the packaging body 50 are folded so that the back surface 3a faces inward (in the example of FIG. 15, the state is the same as the folded state (FIG. 6) of the above embodiment), and are arranged so that the surface sheets 2 (surface 2a) of adjacent pet sheets 1 are in surface contact with each other. Note that in FIG. 15, the surface sheets 2 (surface 2a) of adjacent pet sheets 1 are spaced apart from each other, and a small gap is formed between the adjacent pet sheets 1, but in reality, the surface sheets 2 (surface 2a) of adjacent pet sheets 1 are in contact (surface contact).

[0109] If the bonding surface 7a of one pet sheet 1 contained in the packaging body 50 comes into contact with an adjacent pet sheet 1, when the pet sheet 1 is pulled out, the bonding surface 7a of the pet sheet 1 rubs against (or sticks to) the adjacent pet sheet 1, which may cause a problem that the pet sheet 1 cannot be properly pulled out. In contrast, the packaging body 50 arranges and stores multiple pet sheets 1 so that the surface sheets 2 (surfaces 2a) of adjacent pet sheets 1 are in surface contact with each other, thereby realizing a configuration in which the bonding surface 7a of one pet sheet 1 is unlikely to come into contact with the adjacent pet sheet 1, thereby avoiding the above-mentioned problem. As a result, the convenience of the user who is trying to take out the pet sheet 1 from the packaging body 50 and use it can be improved.

[0110] 15, the pet sheet 1 is folded along the folding line L1 so that the back surface 3a completely overlaps, and therefore the joining surface 7a of the pet sheet 1 is not exposed to the outside in the folded state (i.e., in the state contained in the packaging body 50). According to the above configuration, it is possible to reliably prevent the joining surface 7a of one pet sheet 1 contained in the packaging body 50 from contacting an adjacent pet sheet 1, so that one pet sheet 1 can be appropriately and easily pulled out from the packaging body 50.

[0111] The joining surface 7a of the pet sheet 1 contained in the packaging body 50 as described above may be an adhesive surface. A cover sheet such as a release paper that covers the joining surface 7a may be provided on the joining surface 7a. In this case, the effect of reducing the user's effort is also achieved as follows. That is, by folding each pet sheet 1 so that the back surface 3a is hidden inside (i.e., the joining surface 7a and the cover sheet covering the joining surface 7a are not exposed to the outside), multiple pet sheets 1 are contained in the packaging body 50, and when one pet sheet 1 is pulled out, the cover sheet rubs against another adjacent pet sheet 1, which causes damage to the other pet sheet 1 or causes the cover sheet to peel off unintentionally. As a result, the convenience of the user who is about to take out the pet sheet 1 from the packaging body 50 and use it can be improved.

[0112] In addition, the pet sheet 1 (main body) may be configured such that at least a part of the back surface 3a is exposed to the outside in the folded state. Hereinafter, the main body 10B, which is an example of the above configuration, will be described with reference to Figs. 16 and 17. Fig. 16 is a plan view of the main body 10B in an unfolded state, seen from the back surface 3a side. Fig. 17 is a plan view of the main body 10B in a folded state (folded in two) seen from the same direction as Fig. 16. As shown in Fig. 16, the main body 10B is mainly different from the main body 10 in that it has a folding line L1 that is inclined with respect to the edge portion 10b. That is, the main body 10B does not have a shape that is line-symmetrical with respect to the folding line L1, and is configured such that the first portion 11 and the second portion 12 do not completely overlap when the main body 10B is folded in two along the folding line L1. That is, as shown in Fig. 17, a part of the back surface 3a of the main body 10B is exposed to the outside. As described above, by configuring the main body 10B of the multiple pet sheets 1 contained in the packaging body 50 so that at least a part of the back surface 3a is exposed to the outside when folded, the following additional effect can be obtained in addition to the above-mentioned effect of the joint surface 7a not being exposed to the outside. That is, after the pet sheet 1 is taken out of the packaging body 50, the part of the pet sheet 1 where the back surface 3a is exposed to the outside when folded functions as a knob part, so that the pet sheet 1 can be easily unfolded from the folded state. Also, when taking the pet sheet 1 out of the packaging body 50, the pet sheet 1 can be easily taken out by pulling the knob part. [Explanation of symbols]

[0113] 1...pet sheet, 2...surface sheet, 2a...surface, 3...back sheet, 3a...back, 4...absorbent, 7a...bonding surface, 10, 10A, 10B...main body, 10a...edge (first edge), 10b...edge (second edge), 10c...edge (third edge), 11...first part, 12...second part, 50...packaging body, 71...hook, 72...hook sheet, 100...disposal sheet (animal waste disposal sheet), A1...area (first area), A2...area (second area), A3, A5...bonding area, A4, A6...non-bonding area, E...sheet edge, F...flap, L1...folding line, L2...folding line (second folding line, third folding line), L3...folding line (second folding line), U...excrement.

Claims

1. A pet sheet to be used by placing it on an area of ​​an animal waste disposal sheet that absorbs animal waste, the area having the animal waste absorbed, The diaper bag has a main body portion including a liquid-permeable top sheet, a back sheet located on the opposite side of the top sheet, and an absorbent body disposed between the top sheet and the back sheet, The back sheet has a back surface facing the opposite side to the side facing the top sheet, a bonding surface to be bonded to the animal waste collection sheet is provided on the back surface in an exposed state; The main body portion has a folding line formed thereon that allows the main body portion to be folded in half so that the back surface faces inward, the joining surfaces are arranged so that, in a folded state in which the main body is folded in half along the folding line, a part of the joining surface arranged in a first portion of the main body that is located on one side of the folding line faces a part of the joining surface arranged in a second portion of the main body that is located on the other side of the folding line; An edge of the main body portion parallel to the folding line is formed by a flap portion where the absorbent body is not present. Pet sheet.

2. In a region along a second edge portion opposite to the first edge portion along the folding line of the main body portion in the folded state, a length along the second edge portion of the bonding region where the bonding surface is provided is shorter than a length along the second edge portion of a non-bonding region where the bonding surface is not provided. The pet sheet according to claim 1.

3. In a region along a third edge portion that is connected to a first edge portion along the folding line of the main body portion in the folded state and intersects with the first edge portion, a length along the third edge portion of the bonding region where the bonding surface is provided is shorter than a length along the third edge portion of a non-bonding region where the bonding surface is not provided. The pet sheet according to claim 1.

4. The bonding surface is arranged so as not to overlap the folding line. The pet sheet according to claim 1.

5. The joining surface is a hook surface provided with a plurality of hooks. The pet sheet according to claim 1.

6. The height of the hook is 45 μm to 350 μm. The pet sheet according to claim 5.

7. the rear surface has a non-bonding surface on which the bonding surface is not provided, At least a portion of the non-binding surface that faces the binding surface in the folded state is formed by a film that does not engage with the hook. The pet sheet according to claim 5.

8. The hook surface is formed by a surface of a hook sheet adhered to the back surface, The hook sheet has a sheet edge along an edge different from a first edge along the folding line of the main body portion in the folded state, The sheet edge is not adhered to the back surface. The pet sheet according to claim 5.

9. The main body has two second folding lines formed on both sides of the folding line for folding the main body in half again to form a four-fold state. The pet sheet according to claim 1.

10. The joining surface is arranged so as not to overlap with both the folding line and the two second folding lines. The pet sheet according to claim 9.

11. the two second folding lines have a third folding line for folding the main body portion so that the topsheet is on the inside in the folded state, The bonding surface is provided at least in an area on the opposite side of the third bending line from a side on which the bending line is located. The pet sheet according to claim 9.

12. When the main body is folded in half, a region along a second edge portion opposite to a first edge portion along the folding line has a different color from a region in which the absorbent body is disposed when viewed from the topsheet side. The pet sheet according to claim 1.

13. a region along a third edge portion that is connected to the first edge portion and intersects with the first edge portion, excluding a region along the second edge portion, has the same color as a region in which the absorbent body is disposed when viewed from the topsheet side; The pet sheet according to claim 12.

14. a region of the main body portion along the second edge portion having a lower rigidity than a region of the main body portion in which the absorbent body is disposed; The pet sheet according to claim 12.

15. The proportion of cellulose fibers having hydroxyl groups in the absorbent body is 35% or less. The pet sheet according to claim 1.

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