Pet sheet and kit

Abstract

To provide a pet sheet for stacked use which enables an owner to easily prepare a clean excrement disposal sheet and enables a pet to feel less discomfort for urine traces or the like, and a kit including the pet sheet.SOLUTION: A pet sheet 1 for stacked use on an animal excrement disposal sheet includes: a liquid-permeable surface sheet 2; a liquid-impermeable rear surface sheet 4; and an absorber 3 arranged between the sheets. In the pet sheet 1, the rear surface sheet 4 has an adhesive surface, and the surface sheet 2, the rear surface sheet 4, and the absorber 3 are arranged so that light transmittance becomes 60% or less.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a pet sheet that can be used over an animal waste collection sheet, and a kit that includes the pet sheet and an animal waste collection sheet. This application claims priority based on Japanese Patent Application No. 2021-134014, filed on August 19, 2021, the contents of which are incorporated herein by reference. [Background technology]

[0002] Known animal waste disposal sheets for disposing of waste excreted by pets such as dogs include an animal waste disposal sheet that has a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent positioned between these sheets (see, for example, Patent Document 1).

[0003] Various animal excrement disposal sheets have been proposed. For example, Patent Document 2 describes a pet sheet with an adhesive layer formed on the back sheet. It describes that the adhesive layer allows the pet sheet to adhere to the surface it comes into contact with, preventing it from moving during use and making it easy to maintain its shape when wrapping excrement after use.

[0004] Patent Document 3 describes a urine-absorbing sheet for pets, which comprises a urine-permeable top sheet and a urine-impermeable back sheet with a urine absorber interposed between them, and which has fastening means for attaching and detaching a second urine-absorbing sheet to a required location on its upper surface.The fastening means fastens the second urine-absorbing sheet, making the center section, which is used most frequently, into a two-layer structure, and the second urine-absorbing sheet can be peeled off and replaced with a new second urine-absorbing sheet when it reaches saturation with urine or becomes damaged. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2003-92940 [Patent Document 2] Utility Model Registration No. 3054884 [Patent Document 3] Japanese Patent Application Publication No. 8-317740 Summary of the Invention [Problem to be solved by the invention]

[0006] Pets tend to avoid urine marks on animal waste collection sheets when urinating. As a result, in an attempt to avoid urine marks, pets may urinate in an abnormal position while standing on the sheet, resulting in problems such as urinating outside the animal waste collection sheet. Furthermore, some pets may feel uncomfortable with urine marks on the animal waste collection sheet and urinate outside the sheet instead of standing on it.

[0007] The present invention has been made in view of the above circumstances, and aims to provide a reusable pet sheet that allows pet owners to easily prepare clean excrement disposal sheets and prevents pets from feeling uncomfortable due to urine stains, etc., and a kit including the pet sheet. [Means for solving the problem]

[0008] In order to achieve the above object, the present invention includes the following aspects.

[0009] (1) A pet sheet according to one embodiment of the present invention is a pet sheet used to be layered on top of an animal waste disposal sheet, and comprises a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body arranged between these sheets, wherein the back sheet has an adhesive surface, and the top sheet, back sheet, and absorbent body are arranged so that the light transmittance is 60% or less.

[0010] (2) In the pet sheet described in (1) above, the top sheet, the back sheet, and the absorbent body may be arranged so that the product thickness is more than 0.2 mm and not more than 10 mm.

[0011] (3) The pet sheet described in (1) or (2) above may be arranged such that, in a plan view, the area of ​​the region in which the absorbent is present is 80% or less of the entire surface of the pet sheet.

[0012] (4) In the pet sheet described in any one of (1) to (3) above, the back sheet and the absorbent may be arranged so that the difference in thickness between the area where the absorbent is present and the flap area where the absorbent is not present is 0.3 mm or more and 5 mm or less.

[0013] (5) The pet sheet according to any one of (1) to (4) above has a product size of 1500 cm 2 It may be the following:

[0014] (6) The pet sheet according to any one of (1) to (5) above may have a WC value of 0.03 to 0.35 as measured by a KES compression property tester.

[0015] (7) The pet sheet according to any one of (1) to (6) above has a Qmax value of 1.0 W / cm 2 It may be the following:

[0016] (8) In the pet sheet according to any one of the above (1) to (7), the back sheet may be a breathable sheet.

[0017] (9) In the pet sheet according to any one of (1) to (8) above, the top sheet, the back sheet, and the absorbent may be arranged so that the bending resistance of the area where the absorbent is present is 0.1 to 3.0 mN.

[0018] (10) The pet sheet according to any one of (1) to (9) above may not have a fold line.

[0019] (11) In the pet sheet according to any one of (1) to (10) above, the adhesive surface may be disposed in a flap region where the absorbent body is not present in a plan view.

[0020] (12) The pet sheet according to any one of (1) to (10) above may not have an adhesive surface in the flap region where the absorbent body is not present in a plan view.

[0021] (13) The pet sheet described in any one of (1) to (11) above may have a flap region in which the absorbent is not present when viewed in a plane, and the light transmittance of the flap region may be higher than the light transmittance of the region in which the absorbent is present when viewed in a plane.

[0022] (14) In the pet sheet described in (13) above, the light transmittance of the flap region may be 38.4% or more.

[0023] (15) In the pet sheet described in (13) or (14) above, the flap region may have a portion where the top sheet and the back sheet do not overlap in a plan view.

[0024] (16) In the pet sheet described in any of (1) to (15) above, when viewed in a plane, the total length of the non-adhesive surfaces in the product length direction or product width direction where the adhesive surface is not located may be longer than the total length of the adhesive surfaces.

[0025] (17) In the pet sheet described in (16) above, when viewed in a plane, the total length of the non-adhesive surfaces in both the product length direction and the product width direction where the adhesive surface is not located may be longer than the total length of the adhesive surfaces.

[0026] (18) In the pet sheet described in any one of (1) to (17) above, when viewed in a plane, the adhesive surface may not be present in the divided area located at the center of nine divided areas formed by the intersection of a line dividing the area where the absorbent body is present into three equal parts in the product length direction and a line dividing the area where the absorbent body is present into three equal parts in the product width direction.

[0027] (19) The pet sheet described in any one of (1) to (18) above may further comprise a release paper covering the adhesive surface, the release paper having a non-bonded end portion that is not bonded to the adhesive surface, a flap region in which the absorbent body is not present in a planar view, and a portion in which the non-bonded end portion and the flap region overlap in a planar view.

[0028] (20) In the pet sheet described in (19) above, the release paper may have a stiffness greater than that of the flap region.

[0029] (21) In the pet sheet described in (20) above, the release paper may have a lower bending resistance than the region where the absorbent body is present.

[0030] (22) The pet sheet described in any one of (1) to (21) above further comprises a release paper covering the adhesive surface, and the release paper has a non-bonded end portion that is not bonded to the adhesive surface, and when viewed in a plane, the non-bonded end portion may be present in both the vertical direction of the product and the horizontal direction of the product.

[0031] (23) In the pet sheet described in (22) above, the non-jointed end portion may have different lengths in the longitudinal direction and the transverse direction of the product.

[0032] (24) The pet sheet according to (22) or (23) above may have a mark indicating that the release paper is peeled off in an oblique direction of the product.

[0033] (25) In the pet sheet according to any one of (22) to (24) above, the release paper may be formed from a single sheet.

[0034] (26) The pet sheet according to any one of (19) to (25) above may have a plurality of adhesive surfaces, and may include a plurality of release papers covering each of the plurality of adhesive surfaces.

[0035] (27) The pet sheet described in (26) above may be such that the adhesive surfaces are arranged at the four corners of the back sheet, and the pet sheet is provided with a plurality of release papers covering the adhesive surfaces, respectively.

[0036] (28) In the pet sheet described in any one of (19) to (26) above, the adhesive surface may be present in the center and side portions of the product when viewed in a plane, and the length of the adhesive surface present in the center of the product in the width direction of the product may be longer than the length of the adhesive surface present in the side portions of the product in the width direction of the product.

[0037] (29) In the pet sheet described in any one of (19) to (26) above, the adhesive surface may be present in the center and side portions of the product when viewed in a plane, and the length of the adhesive surface present in the center of the product in the width direction of the product may be shorter than the length of the adhesive surface present in the side portions of the product in the width direction of the product.

[0038] (30) In the pet sheet described in any of (19) to (26) above, the direction in which the adhesive surface extends may be the same as the direction in which the non-jointed end portions extend, and the adhesive surfaces may be arranged intermittently in a direction perpendicular to the direction in which the non-jointed end portions extend.

[0039] (31) In the pet sheet described in (30) above, the end of the product that intersects with the direction in which the adhesive surface extends may be joined to the adhesive surface.

[0040] (32) A kit according to one embodiment of the present invention includes a pet sheet according to any one of (1) to (31) above, and an animal waste disposal sheet having a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent disposed between these sheets.

[0041] (33) In the kit described in (32) above, when viewed in a plane, the color of the area of ​​the pet sheet where the absorbent is present and the color of the area of ​​the animal waste disposal sheet where the absorbent is present may be the same color system.

[0042] (34) In the kit described in (32) or (33) above, the maximum length L2 of the pet sheet may be greater than the maximum length L1 in the vertical or horizontal direction when 30 cc of artificial urine is dropped onto the animal waste disposal sheet.

[0043] (35) An animal waste collection sheet according to one embodiment of the present invention is an animal waste collection sheet used by stacking pet sheets on top of each other at the excretion site, and comprises a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent placed between these sheets, and the maximum length L2 of the pet sheet is greater than the maximum length L1 in the vertical or horizontal direction when 30 cc of artificial urine is dropped onto the animal waste collection sheet.

[0044] (36) The use of a pet sheet according to one embodiment of the present invention includes attaching a pet sheet having a light transmittance of 60% or more and a side length of 13 to 17 cm to an animal excrement disposal sheet, wherein the maximum length L1 in the vertical or horizontal direction of the animal excrement disposal sheet when 30 cc of artificial urine is dropped onto the animal excrement disposal sheet is less than 17 cm.

[0045] (37) One aspect of the present invention relates to the use of a pet sheet, which is an animal waste collection sheet having a maximum length L2 that is greater than the maximum length L1 in the vertical or horizontal direction when 30 cc of artificial urine is dropped onto it, and which includes reusing the animal waste collection sheet by covering urine stains on the animal waste collection sheet with a pet sheet having a light transmittance of 60% or more and a side length of 13 to 17 cm. [Effects of the Invention]

[0046] According to the present invention, it is possible to provide a reusable pet sheet that allows pet owners to easily prepare clean excrement disposal sheets and that prevents pets from feeling uncomfortable due to urine stains, etc., and a kit including the pet sheet. [Brief explanation of the drawings]

[0047] [Figure 1] 1 is a perspective view of a pet sheet according to an embodiment of the present invention. [Figure 2] 2 is a cross-sectional view of the pet sheet according to one embodiment of the present invention taken along line II-II in FIG. 1. FIG. [Figure 3] 1 is a plan view of a pet sheet according to an embodiment of the present invention. [Figure 4] 1 is a cross-sectional view of a pet sheet according to an embodiment of the present invention; [Figure 5] 1 is a plan view showing an example of the arrangement of adhesive surfaces in a pet sheet according to an embodiment of the present invention. FIG. [Figure 6] 1 is a cross-sectional view showing an example of the arrangement of adhesive surfaces in a pet sheet according to an embodiment of the present invention. FIG. [Figure 7] 1 is a plan view showing an example of the arrangement of adhesive surfaces in a pet sheet according to an embodiment of the present invention. FIG. [Figure 8] 1 is a cross-sectional view showing an example of the arrangement of adhesive surfaces in a pet sheet according to an embodiment of the present invention. FIG. [Figure 9] 1 is a plan view showing an example of the arrangement of adhesive surfaces in a pet sheet according to an embodiment of the present invention. FIG. [Figure 10] 1 is a cross-sectional view showing an example of the arrangement of adhesive surfaces in a pet sheet according to an embodiment of the present invention. FIG. [Figure 11] 1 is a plan view showing an example of the arrangement of adhesive surfaces in a pet sheet according to an embodiment of the present invention. FIG. [Figure 12] 1 is a cross-sectional view showing an example of the arrangement of adhesive surfaces in a pet sheet according to an embodiment of the present invention. FIG. [Figure 13] 1 is a plan view showing an example of the arrangement of adhesive surfaces in a pet sheet according to an embodiment of the present invention. FIG. [Figure 14] 1 is a plan view showing an example of the arrangement of adhesive surfaces in a pet sheet according to an embodiment of the present invention. FIG. [Figure 15] 1 is a plan view of a pet sheet according to an embodiment of the present invention. [Figure 16] 1 is a cross-sectional view of a pet sheet according to an embodiment of the present invention; [Figure 17]FIG. 2 is a plan view showing an example of the arrangement of release paper in the pet sheet according to one embodiment of the present invention. [Figure 18] 1 is a plan view showing an example of the arrangement of adhesive surfaces in a pet sheet according to an embodiment of the present invention. FIG. [Figure 19] 1 is a plan view showing an example of the arrangement of adhesive surfaces in a pet sheet according to an embodiment of the present invention. FIG. [Figure 20] 1 is a plan view showing an example of the arrangement of adhesive surfaces in a pet sheet according to an embodiment of the present invention. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0048] <Pet Sheet> Preferred embodiments of the pet sheet of the present invention will be described in detail below with reference to the drawings. In this specification, unless otherwise specified, "a plan view" simply refers to "viewing an object (e.g., an animal waste disposal sheet, a top sheet, an absorbent, etc.) placed on a horizontal surface in an unfolded state with the excrement supply surface facing upward, from above in the thickness direction of the object," and further, a drawing from this plan view is referred to as a "plan view."

[0049] FIG. 1 is a perspective view of a pet sheet 1 according to one embodiment of the present invention, and FIG. 2 is a cross-sectional view of the pet sheet 1 taken along line II in FIG. As shown in Fig. 1, the pet sheet 1 according to one embodiment of the present invention is a rectangular (preferably square) sheet in plan view, having a product length direction L, a product width direction W, and a thickness direction T. When the pet sheet 1 is square in plan view, the direction of one of the sides of the pet sheet 1 is defined as the product length direction L, and the side direction perpendicular to the product length direction L is defined as the product width W. In the present invention, the external shape of the pet sheet is not limited to a rectangular shape, and any shape such as a polygon, circle, or ellipse can be adopted depending on various uses, designs, etc. The size of the pet sheet 1 can be appropriately set depending on the size and type of animal to which the animal waste collection sheet is to be applied, and for example, when the animal to which the pet sheet 1 is to be applied is a dog, the length of the animal waste collection sheet in the product length direction is typically 250 mm to 1500 mm, preferably 300 mm to 1000 mm, and more preferably 400 mm to 950 mm. The length of the animal waste collection sheet in the product width direction is typically 200 mm to 1200 mm, preferably 250 mm to 1000 mm, and more preferably 300 mm to 650 mm.

[0050] The pet sheet 1 is used to be used on top of an animal excrement collection sheet. More specifically, the pet sheet 1 is used by being placed on top of the animal excrement collection sheet so as to cover the excrement of the animal excrement collection sheet that has absorbed the excrement. An animal waste collection sheet typically comprises a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent disposed between these sheets. The animal waste collection sheet is placed in a spread-out state in a predetermined position in a space (e.g., a room) where animals such as pets are kept, and is used to absorb and retain excrement such as urine excreted by the animals, thereby keeping the space clean. The animal waste collection sheet may be placed directly on the floor or ground of the space, or may be placed via a predetermined holder, tray, bedding, etc.

[0051] Here, the "animals" to which the animal waste disposal sheet is applied are not particularly limited as long as they are animals that can be kept as pets, etc., and can include mammals such as dogs, cats, and hamsters, as well as various other animals such as birds, reptiles, and amphibians.

[0052] Furthermore, in the present invention, the "excrement" absorbed and retained by the animal excrement disposal sheet is not particularly limited as long as it can be absorbed and retained by the absorbent, and examples include various body fluids such as liquid or low-viscosity feces, urine, saliva such as drool, and blood.

[0053] Pets tend to avoid urine marks on animal waste collection sheets when urinating. As a result, in an attempt to avoid urine marks, pets may urinate in an abnormal position while standing on the sheet, resulting in problems such as urinating outside the animal waste collection sheet. Furthermore, some pets may feel uncomfortable with urine marks on the animal waste collection sheet and urinate outside the sheet instead of standing on it.

[0054] To address the above issues, pet owners have taken measures such as (a) changing the animal waste disposal sheet after each excretion, or (b) laying down multiple animal waste disposal sheets. However, in the case of (a) above, there are problems such as the time required for replacement and an increase in the amount of waste, and in the case of (b) above, there are problems such as excrement leaking from the borders between the animal excrement collection sheets when pets urinate, and the pets avoiding the center of the animal excrement collection sheet from the second time onwards.

[0055] On the other hand, pets will try to excrete on the animal waste collection sheet as their owners have trained them to do, but as mentioned above, due to their habit of trying to excrete by avoiding the urine stains on the sheet, they may not excrete correctly on the animal waste collection sheet or may end up getting their feet wet. If a pet is scolded by its owner for not excreting correctly on the animal waste collection sheet or senses its owner's dissatisfied attitude, it will become stressed.

[0056] In this embodiment, the pet sheet 1 is used to cover urine stains on the animal waste collection sheet by placing it over them. This allows the owner to hide urine stains on the animal waste collection sheet and easily prepare a clean waste collection sheet (a "reusable sheet" made by placing the pet sheet 1 on a used animal waste collection sheet). Meanwhile, the pet is less likely to feel uncomfortable with urine stains on the animal waste collection sheet. Therefore, when excreting, the pet will properly place itself on the reusable sheet and not avoid the urine stained area, making it less likely to leak outside the reusable sheet or get its paws wet. As a result, both the owner and the pet can reduce stress related to excretion, which ultimately allows them to appreciate each other more deeply and build a loving relationship.

[0057] 1 and 2, the pet sheet 1 according to this embodiment comprises, in the thickness direction T, a liquid-permeable top sheet 2 that forms the supply surface for animal excrement (hereinafter sometimes referred to as the "first surface"), a liquid-impermeable back sheet 4 that forms the surface opposite the excrement supply surface (hereinafter sometimes referred to as the "second surface") and that forms the placement surface of the pet sheet 1 (i.e., the surface facing the surface of the animal excrement collection sheet on which the pet sheet is placed), and a liquid-absorbent body 3 that is disposed between these sheets. The top sheet 2 and the back sheet 4 are joined together at their respective peripheral edges by any joining means such as a hot-melt adhesive.

[0058] The back sheet 4 has an adhesive surface. By contacting the adhesive surface of the back sheet 4 with the urine stains on the animal waste disposal sheet, the owner can easily and reliably conceal the urine stains. In addition, the adhesive prevents the pet sheet from slipping when the pet sits on it, so the animal is less likely to feel uncomfortable.

[0059] The adhesive that constitutes the adhesive surface may be synthetic rubber (SIS, SBS, etc.). In this embodiment, the back sheet 4 may have an uneven structure as an adhesive region. The arrangement of the adhesive surface of the backsheet 4 will be described later.

[0060] 3 is a plan view of a pet sheet according to one embodiment of the present invention. The pet sheet 1 has a top sheet 2, a back sheet 4, and an absorbent body 3 arranged so that the light transmittance is 60% or less, preferably 40% or less, and more preferably 30% or less. Typically, in a plan view of the pet sheet 1, the light transmittance is 60% or less in an area 3a where the top sheet 2, back sheet 4, and absorbent body 3 are present.

[0061] In this embodiment, the light transmittance is measured in accordance with JIS K7361-1:1997. Specifically, standard calibration is performed according to the specifications of a haze meter such as a Haze Meter NDH7000SP II (Nippon Denshoku Industries Co., Ltd.), and a sample of 30 mm x 30 mm cut out from the center of the pet sheet 1 where the absorbent body 3 is located is set and measured. The size of the sample can be adjusted as appropriate depending on the measuring instrument and the sample.

[0062] Because the light transmittance of the pet sheet 1 according to this embodiment is 60% or less, pets have difficulty seeing urine stains when looking at the multi-use sheet. As a result, pets will properly climb onto the multi-use sheet when defecating and will not avoid areas where urine stains were present, making it less likely for pets to leak outside the multi-use sheet or get their paws wet. Owners who keep pets indoors can especially enjoy a comfortable living environment because urine stains are less visible, allowing the sheet to remain clean.

[0063] The pet sheet 1 according to this embodiment may have a product thickness of more than 0.2 mm and not more than 10 mm, preferably 1.0 mm or more and 7.0 mm or less, and more preferably 1.5 mm or more and 5.0 mm or less. If the product thickness of the pet sheet 1 is equal to or greater than the lower limit of the above range, the owner will be less likely to notice urine marks when simply placing the pet sheet on top of the animal waste collection sheet. Also, if the product thickness is equal to or greater than the lower limit of the above range, pets will be less likely to notice urine marks when looking at the overlapping sheet, and will likely recognize it as a new animal waste collection sheet and not avoid the urine marks. On the other hand, by having a product thickness below the upper limit of the above range, when the pet sheet is placed on top of the animal waste collection sheet, the owner is less likely to feel uncomfortable as if they are covering urine stains with something placed on top of the animal waste collection sheet. Also, by having a product thickness below the upper limit of the above range, pets are less likely to feel uncomfortable as if there is a foreign object on the overlapping sheet before getting on it, so they will not avoid the overlapping sheet. Therefore, they will not urinate in places unrelated to the sheet.

[0064] In this embodiment, the product thickness of the pet sheet 1 can be measured using a commercially available thickness meter such as a PEACOCK Thickness Meter JB 0.05 mm (manufactured by Ozaki Manufacturing Co., Ltd.) Specifically, in a plan view of the pet sheet 1, the thickness is measured using the thickness meter at the center of each of nine divided regions formed by the intersection of a line dividing the region 3a into three equal parts in the product length direction L and a line dividing the region 3a into three equal parts in the product width direction W, and the average value of the thicknesses at the nine points can be determined as the product thickness.

[0065] In the pet sheet 1 according to this embodiment, the top sheet 2, back sheet 4, and absorber 3 may be arranged so that, in a plan view, the area of ​​the region where the absorber 3 is present is 80% or less, preferably 75% or less, and more preferably 65% ​​or less of the entire surface of the pet sheet 1. Typically, the pet sheet 1 can be configured so that, in a plan view, the area of ​​the region 3a where the top sheet 2, back sheet 4, and absorber 3 are present is 80% or less, preferably 75% or less, and more preferably 65% ​​or less of the entire surface of the pet sheet 1. When the area of ​​the region where the absorbent 3 is present is within the above range, the flap region 2a (flap portion 2a described below) where there is no absorbent is an area where excrement is not retained, making it easy for the owner to grasp this area (removal point) and remove the pet sheet.

[0066] In the pet sheet 1 according to this embodiment, the back sheet 4 and the absorbent 3 may be arranged so that the difference in thickness between the region where the absorbent 3 is present and the flap region where the absorbent 3 is not present is 0.3 mm to 5 mm, preferably 1.0 mm to 3 mm, and more preferably 1.0 mm to 2 mm. Typically, in a plan view of the pet sheet 1, the difference in thickness between the region 3a where the top sheet 2, back sheet 4, and absorbent 3 are present and the flap region 2a where the absorbent 3 is not present can be configured to be 1.0 mm to 5 mm, preferably 1.0 mm to 3 mm, and more preferably 1.0 mm to 2 mm. When the difference in thickness between the area where the absorbent body 3 is present and the flap area where the absorbent body 3 is not present is equal to or greater than the lower limit of the above range, it becomes easier for the owner to visually identify the location where the pet sheet should be removed. On the other hand, if the difference in thickness between the area where the absorber 3 is present and the flap area where the absorber 3 is not present is equal to or less than the upper limit of the above range, when the pet sheet is placed over the animal waste collection sheet, the owner is less likely to feel uncomfortable as if something is being placed on top of the animal waste collection sheet to cover urine stains. Also, before getting on the overlapping sheet, pets are less likely to feel uncomfortable as if there is a foreign object on the overlapping sheet, and are more likely to avoid the overlapping sheet.

[0067] The pet sheet 1 according to this embodiment has a product size of 1500 cm 2 May be less than 900cm 2 Less than 300cm is preferable 2 The following is more preferred: When the product size is within the above range, owners can easily attach and detach the animal waste disposal sheet with one hand. Furthermore, pets do not sense the presence of a foreign object on the reusable sheet before climbing on it, and are therefore less likely to avoid the reusable sheet.

[0068] The pet sheet 1 according to this embodiment may have product length and width dimensions (product length x product width) of 38 cm or less x 38 cm or less, preferably 30 cm or less x 30 cm or less, more preferably 20 cm or less x 20 cm or less, and even more preferably 17 cm or less x 17 cm or less. When the product length and width dimensions are below the upper limits of the above preferred ranges, owners can easily attach and detach the animal waste disposal sheet with one hand. Furthermore, before climbing onto the overlapping sheet, pets do not sense the presence of a foreign object on the overlapping sheet, and are therefore more likely to avoid the overlapping sheet. On the other hand, the pet sheet 1 according to this embodiment may have a product length and product width (product length x product width) of 7 cm or more x 7 cm or more, preferably 10 cm or more x 10 cm or more, and more preferably 13 cm or more x 13 cm or more. When the product length and product width dimensions are equal to or greater than the lower limit of the above-mentioned preferred range, the pet sheet 1 can easily hide urine stains.

[0069] The pet sheet 1 according to this embodiment may have a WC value of 0.03 to 0.35, preferably 0.05 to 0.30, and more preferably 0.10 to 0.25, as measured by a KES compression property tester. Generally, animal waste disposal sheets contain a superabsorbent polymer (SAP) in the bottom layer. When the SAP absorbs waste, it swells in certain areas, which can feel like gel when pets step on the swollen areas, which can be uncomfortable for pets. If the WC value of the pet sheet 1 measured by the KES compression property tester is equal to or greater than the lower limit of the above-mentioned preferred range, when a pet steps on the overlapping sheet, it is less likely to feel discomfort from the urine marks on the lower sheet, and therefore it is possible for the pet to urinate in the correct position without avoiding the position when it steps on the sheet. As a result, the possibility of the pet urinating outside the sheet is reduced. On the other hand, if the WC value is equal to or less than the upper limit of the above-mentioned preferred range, the pet is less likely to feel discomfort from the paws when it steps on the pet sheet, and is less likely to avoid the pet sheet.

[0070] In this embodiment, the WC value measured by the KES compression property tester is measured using a commercially available compression tester such as the KES-FB3-AUTO-A compression tester (Kato Tech Co., Ltd.). Specifically, the area (area 3a) where the absorbent body 3 is present in a plan view of the pet sheet 1 is cut out to a size of 30 mm x 30 mm to prepare a sample, and the center of the sample is gently sandwiched between upper and lower disks to obtain a compression area (area of ​​the disks) of 2.0 cm. 2 The thickness dimension T0 of each sample under a load of 0.49 hPa is measured. Next, the measurement sample is compressed at a pressure rate of 0.02 mm / s until it is under a load of 49.03 hPa, and the thickness dimension Tm under a load of 49.03 hPa is measured. The work required to compress the sample from thickness T0 to thickness Tm (N·m / m 2 ) to find WC.

[0071] The pet sheet 1 according to this embodiment has a Qmax value of 1.0 W / cm 2 May be less than 0.5 W / cm 2 Less than 0.1 W / cm is preferable. 2 The following is more preferred: If the Qmax value is within the above range, when a pet steps on the overlapping sheet, it is less likely to feel a cool sensation from the excrement marks on the lower sheet of the animal excrement disposal sheet, and the pet will not feel any discomfort and will be less likely to avoid the overlapping sheet.

[0072] In this embodiment, the Qmax value of the pet sheet 1 can be measured using a commercially available heat flow measuring device such as ThermoLab KES-F7 (manufactured by Kato Tech Co., Ltd.) Specifically, the absorbent core or non-absorbent core region is placed on a ThermoCool (constant temperature table) set to 20°C and left for a while, and then the sensor part of a T-Box heated to 30°C is placed so that the sample and the sensor part are in contact with each other, and the Qmax value is measured.

[0073] In this embodiment, the pet sheet 1 may be arranged so that the stiffness of the region where the absorber 3 is present is 0.1 to 3.0 mN, preferably 0.5 to 2.0 mN, and more preferably 0.7 to 1.5 mN. Typically, the pet sheet 1 can be configured so that the stiffness of the region 3a where the top sheet 2, back sheet 4, and absorber 3 are present is 0.1 to 3.0 mN, preferably 0.5 to 2.0 mN, and more preferably 0.7 to 1.5 mN in a plan view. If the stiffness of the area where the absorber 3 is present is within the above range, the pet sheet itself will not bend easily when the owner picks up the pet sheet, making it easy to place it neatly on the animal waste collection sheet with one hand while maintaining its shape. Also, if the stiffness of the area where the absorber 3 is present is within the above range, the pet sheet will have an appropriate hardness, making it less likely for the pet to feel uncomfortable when getting on it and less likely to avoid the pet sheet. Furthermore, when the top sheet 2, back sheet 4 and absorbent body 3 are arranged so that the area where the absorbent body 3 exists is 90% or less of the entire surface of the pet sheet 1 in a plan view, and the stiffness of the area where the absorbent body 3 exists is within the above range, when the owner lifts the pet sheet 1, the pet sheet 1 itself is less likely to bend, and the pet sheet 1 can be easily placed neatly with one hand while maintaining its shape.

[0074] In this embodiment, the bending resistance of the region where the absorbent body 3 is present can be measured by the following procedure. Note that matters not described here follow "6.7.4 Gurley method" of JIS L 1913:2010 "Testing methods for general nonwoven fabrics." (1) A constant temperature and humidity chamber (temperature: 25±5°C, relative humidity: 65±5%) was placed in the room. Prepare a No. 311 Gurley flexibility tester. (2) The sample to be measured is left undisturbed in the temperature and humidity chamber for 24 hours. (3) A sample having a length L of 38 mm and a width d of 25 mm is cut out from the specimen so that the length L extends in a predetermined direction (for example, the product length direction or product width direction of the absorbent article). If the absorbent article is individually packaged, remove the packaging sheet before measurement. (4) The sample is set so that one end 6.3 mm of the sample in the product length direction is held by the chuck portion and the other end 6.3 mm of the sample in the product length direction is in contact with pendulum B. (5) Rotate the movable arm at a constant speed and measure the scale (RG1) when the sample separates from pendulum B. Next, turn the sample over and measure the Gurley flexibility. Set it in the testing machine and read the scale (RG2) when the sample separates from pendulum B (for the second time). (6) Calculate the bending resistance (mN) using the following formula. Bending resistance (mN)

number

[0075] The pet sheet 1 according to this embodiment does not necessarily have to have a fold line. If the pet sheet 1 does not have a fold line, the step of opening the pet sheet 1 can be omitted when placing the pet sheet 1 on the animal waste collection sheet, and the pet sheet 1 can be easily attached to the urine marks on the animal waste collection sheet in one step without causing wrinkles.

[0076] The various members that make up the pet sheet 1 according to this embodiment will be described in more detail below.

[0077] (surface sheet) As shown in Figures 1 and 2, the topsheet 2 is disposed on the side of the pet sheet 1 where animal excrement is supplied in the thickness direction T, and is composed of a liquid-permeable sheet-like material that allows the animal excrement to move from the excrement supply side to the opposite side. The liquid-permeable sheet-like material that constitutes the topsheet 2 is not particularly limited as long as it is made of white fibers and satisfies the above-mentioned specific requirements, and any nonwoven fabric such as an air-through nonwoven fabric, a spunbond nonwoven fabric, or a point-bond nonwoven fabric can be suitably used. The nonwoven fabric may be hydrophilized with a surfactant.

[0078] The white fibers constituting the top sheet 2 are not particularly limited as long as the fibers are white in color. For example, thermoplastic resin fibers to which white pigments or white dyes have been added, or thermoplastic resin fibers having a surface structure or crystalline structure that can diffusely reflect light, etc. can be suitably used.

[0079] Among such white fibers, it is preferable that the white fibers constituting the top sheet are thermoplastic resin fibers to which a white pigment has been added, since this makes it easier to form a top sheet that satisfies the above-mentioned requirements. Here, the white pigment added to the thermoplastic resin fiber is not particularly limited, and examples thereof include titanium oxide (titanium white), zinc oxide (zinc white), a mixture of barium sulfate and zinc sulfide, and basic lead carbonate (lead white). However, from the viewpoints of a high refractive index and low toxicity to living organisms, it is preferable to use titanium oxide as the white pigment.

[0080] Furthermore, the type of thermoplastic resin fiber is not particularly limited as long as it is a fiber made of a thermoplastic resin. Examples of the thermoplastic resin include known resins such as olefin resins such as polyethylene (PE), polypropylene (PP), and ethylene-vinyl acetate copolymer (EVA), polyester resins such as polyethylene terephthalate (PET) and polylactic acid (PLA), and polyamide resins such as 6-nylon. These resins may be used alone or in combination of two or more types. The structure of such fibers made of thermoplastic resins is not particularly limited, and examples thereof include composite fibers such as core-sheath fibers, side-by-side fibers, and islands-and-sea fibers; hollow fibers; fibers with irregular cross sections such as flat, Y-shaped, and C-shaped; three-dimensional crimped fibers with latent or apparent crimp; and split fibers that are split by physical loads such as water flow, heat, and embossing. The fibers may be used alone or in combination of two or more types of fibers.

[0081] Among such thermoplastic resin fibers, it is preferable to use core-sheath type thermoplastic resin fibers such as polyester (core) / polyethylene (sheath), and it is particularly preferable to use core-sheath type thermoplastic resin fibers in which the above-mentioned titanium oxide is contained only in the core. If the above-mentioned titanium oxide is contained only in the core of a core-sheath type thermoplastic resin fiber, when light incident on the fiber is reflected by the titanium oxide contained in the core, the reflected light is refracted in the sheath that covers the outer surface of the core and exits the fiber, resulting in more diffuse reflection of light, making it possible to obtain a fiber with a strong degree of whiteness even with a low titanium oxide content. Furthermore, when the topsheet is made of such specific sheath-core thermoplastic resin fibers (i.e., sheath-core thermoplastic resin fibers containing titanium oxide only in the core), the bonding of the fibers by thermal fusion of the sheath is less likely to be hindered by titanium oxide during the production of the topsheet, allowing the fibers to be bonded more reliably and making the topsheet stronger.As a result, the core of the sheath-core thermoplastic resin fibers that make up the topsheet is less susceptible to the effects of animals scratching, etc., and the above-mentioned effects of titanium oxide can be exerted more sustainably over a long period of time.

[0082] The fineness of the thermoplastic resin fibers is not particularly limited and may be, for example, within the range of 1.1 to 8.8 dtex. However, in terms of the strength, flexibility, and liquid permeability of the nonwoven fabric, it is preferably within the range of 1.5 to 4.6 dtex. Furthermore, the thermoplastic resin fibers may be subjected to a hydrophilization treatment, such as a treatment using a surfactant or a hydrophilic agent (for example, kneading a surfactant into the interior of the fiber, applying a surfactant to the surface of the fiber, etc.).

[0083] Furthermore, in the pet sheet 1 according to this embodiment, the top sheet 2 may be made of only white fibers, or may contain other non-white fibers or any additives. Such other fibers include fibers made of the same thermoplastic resin as the above-mentioned thermoplastic resin, and the content thereof is preferably 75% by mass or less of all the fibers making up the topsheet. Furthermore, examples of optional additives include fragrances, deodorants, antibacterial agents, disinfectants, etc. Two or more of these additives may be used in combination.

[0084] In this embodiment, the thickness of the topsheet 2 is not particularly limited as long as it satisfies the above-mentioned specific requirements, but it is preferably 0.05 mm or more. The thickness of the topsheet can be measured, for example, using a compression tester (manufactured by Kato Tech Co., Ltd., model: KES-FB3 AUTO-A) as a measuring device, as follows: When measuring the thickness of the topsheet, a measurement sample taken from the topsheet is placed in the above-mentioned measuring device, and a pressure of 0.5 g / cm is applied to the measurement sample by the measuring terminal. 2 The thickness is measured at this time. The average value of the measurements for N=10 is used as the thickness of the top sheet.

[0085] In this embodiment, the basis weight of the topsheet 2 is not particularly limited, but is preferably 8 g / m 2 ~30g / m 2 is preferred, and 10 g / m 2 ~25g / m 2 is more preferred.

[0086] (absorbent) As shown in Figure 2, the absorbent body 3 is disposed on the opposite side of the topsheet 2 from the surface on which excrement is supplied, and is an absorbent member that absorbs and retains excrement that has permeated the topsheet 2. The topsheet 2 and the absorbent body 3 are joined together by any adhesive such as a hot-melt adhesive, and the adhesive has a basis weight (for example, 0.05 g / m) that does not prevent excrement from permeating. 2 ~130g / m 2 ) and is disposed between the topsheet 2 and the absorbent body 3 in a coating form (for example, spiral, dot, stripe, etc.).

[0087] In this embodiment, the absorbent body 3 has an outer shape that is approximately rectangular (preferably square) when viewed in a plane, as shown in Figures 1 and 3, and is arranged in the central region of the pet sheet 1, but the present invention is not limited to this form, and the absorbent body 3 may have any shape when viewed in a plane other than rectangular, and may also be arranged offset in any direction from the center of the pet sheet 1.

[0088] In this embodiment, as shown in Figure 2, the absorbent body 3 is composed of a hydrophilic upper sheet 31 located on the top sheet side, an absorbent core 32 located on the back sheet side and formed of an absorbent material for absorbing and retaining excrement, and a core wrap sheet 33 consisting of at least one liquid-permeable sheet that covers the upper sheet 31 and absorbent core 32 from the back sheet side.

[0089] The upper sheet 31 is made of white tissue paper (e.g., made primarily from bleached softwood kraft pulp, with a basis weight of 8 g / m 2 ~30g / m 2 The absorbent core 32 is made of a material such as tissue paper, and is disposed in the absorbent body 3 so as to cover the surface of the surface sheet side of the absorbent core 32, thereby preventing the absorbent core 32 from losing its shape.

[0090] In this embodiment, the upper sheet 31 forms an intermediate layer with a higher density than the absorbent core 32. This makes the absorbent body 3 more visible, making it easier for pets to recognize the absorbent body 3 as the target for excretion, and allowing pets to excrete in the correct position with greater accuracy. In addition, owners can more easily keep track of their pet's urine volume, urine color, and location of use.

[0091] In this embodiment, the upper sheet 31 and the absorbent core 32 are bonded together by water spraying. This water spraying is an adhesive method used when manufacturing the absorbent body 3, in which water is sprayed onto the upper surface (i.e., the surface of the pet sheet 1 facing the topsheet 2) of the absorbent core 32 (specifically, the first absorbent core 321 made of absorbent polymer 321a), and the upper sheet 31 is then attached thereon. The sprayed water subsequently evaporates, and the sprayed area becomes dry, so that the upper sheet 31 and the absorbent core 32 are directly bonded together. When the upper sheet 31 and the absorbent core 32 are bonded together by water spraying, no adhesive is interposed between the upper sheet 31 and the absorbent core 32, and excrement such as urine that has migrated from the topsheet side can be quickly absorbed by the absorbent core 32. This allows the deodorizing effect to be exerted immediately after the animal excretes, providing a comfortable environment for the animal's owner.

[0092] The sheet material constituting the upper sheet 31 is not particularly limited, and in addition to the above-mentioned tissue paper, any nonwoven fabric such as an air-through nonwoven fabric or a spunbond nonwoven fabric can be used.

[0093] (Absorption core) In this embodiment, the absorbent core 32 is made of granular absorbent polymer. The absorbent polymer used in this embodiment is not particularly limited as long as it can absorb and retain liquid, and any highly absorbent polymer such as polyacrylic acid-based, starch-based, or cellulose-based can be used.

[0094] The basis weight of the absorbent core 32 is 15 g / m2 ~480g / m 2 is preferred, and 55 g / m 2 ~385g / m 2 More preferably, 80 g / m 2 ~290g / m 2 is more preferable.

[0095] In addition, in this embodiment, the core wrap sheet 33 is made of tissue paper similar to the above-mentioned upper sheet 31 (for example, tissue paper made primarily from bleached coniferous kraft pulp), and is arranged in the absorbent body 3 so as to cover the upper sheet 31 and absorbent core 32 from the back sheet side, preventing the absorbent core 32 from losing its shape and the upper sheet 31 from shifting out of position, etc.

[0096] In this embodiment, the core wrap sheet is not particularly limited as long as it is liquid permeable and can prevent the absorbent core from losing its shape, and in addition to the above-mentioned tissue paper, any nonwoven fabric such as an air-through nonwoven fabric or a spunbond nonwoven fabric can be used.

[0097] (Back sheet) In this embodiment, as shown in Figure 2, the back sheet 4 is arranged in the thickness direction T of the pet sheet 1 so as to face the floor or ground on which the pet sheet 1 is placed, and is made of a liquid-impermeable sheet material that prevents leakage of excrement excreted by the animal. The liquid-impermeable sheet material constituting such a back sheet 4 is not particularly limited, and suitable examples include non-breathable resin films such as polyethylene and polypropylene, laminates in which nonwoven fabric is bonded to such resin films, and water-repellent or hydrophobic nonwoven fabrics.

[0098] The backsheet 4 has an adhesive surface 4a. There are no particular limitations on the arrangement of the adhesive surface 4a on the backsheet 4. For example, the adhesive surface 4a may be arranged in a flap region (flap portion 2a) where no absorbent body 3 is present in a plan view. If the adhesive surface 4a is present on the flap portion 2a, when the owner attaches the pet sheet 1 to the animal waste collection sheet, there is no gap between the flap portion 2a and the lower sheet of the animal waste collection sheet, making it easy and clean to attach without leaving any excrement marks after attachment. Also, because the flap portion 2a is free before the pet gets on the overlapping sheet, the risk of the pet noticing the presence of the pet sheet 1 and not getting on the overlapping sheet is reduced. There is also less risk of the pet sheet being turned up by getting its feet caught on the flap portion.

[0099] Figures 5, 7 and 9 are plan views showing examples of arrangement of adhesive surfaces in a pet sheet according to one embodiment of the present invention, and Figures 6, 8 and 10 are schematic cross-sectional views showing examples of arrangement of adhesive surfaces in a pet sheet according to one embodiment of the present invention.

[0100] 5 and 6, the adhesive surface 4a is present on a part of the flap portion 2a in a plan view, and is arranged only on a predetermined portion of the backsheet 4. Furthermore, as shown in Fig. 6(a), the adhesive surface 4a may be arranged only on the corners of the backsheet 4, or as shown in Fig. 6(b), the adhesive surface 4a may be arranged in a strip shape along the edge of the backsheet 4.

[0101] 5 and 6, the absence of an adhesive surface on at least a portion of the flap facilitates the configuration of the flap edge slightly floating above the lower sheet of the animal waste collection sheet. Therefore, if an owner places the pet sheet in the wrong position, the pet sheet can be easily peeled off from the animal waste collection sheet and reattached. Furthermore, the absence of an adhesive member in the center of the absorbent core makes it easier to sense excrement odors emanating from the lower sheet.

[0102] 7 and 8, the adhesive surface 4a is present on part or the entire flap portion 2a in a plan view, and is disposed over the entire surface of the backsheet 4. Furthermore, as shown in Fig. 8(a), the adhesive surface 4a may be disposed so as to cover almost the entire surface of the backsheet 4, or as shown in Fig. 8(b), the adhesive surface 4a may be disposed in a strip shape so as to cover the entire surface of the backsheet 4.

[0103] 7 and 8, the presence of adhesive in the area overlapping with the absorbent core makes the sheet less likely to slip when applied. In addition, when a pet sits on the sheet, it is less likely to slip and the pet is less likely to feel uncomfortable wearing the sheet.

[0104] 9 and 10, the adhesive surface 4a is present over the entire flap portion 2a in plan view, and is disposed over the entire surface of the backsheet 4. In addition, the topsheet 2 is folded in so as to cover the edge of the backsheet 4.

[0105] 9 and 10, the adhesive is applied to the entire area where the absorbent core is present, making it difficult for the pet to slip off when it sits on it, and the non-adhesive parts on the sides make it easy for the owner to remove. Furthermore, the non-adhesive parts are made of the surface sheet 2 (nonwoven fabric) on both the front and back sides, so the owner can feel a softer touch (compared to a film) when removing it.

[0106] Furthermore, in this embodiment, the pet sheet 1 does not need to have an adhesive surface 4a in the flap region (flap portion 2a) where the absorbent body 3 is not present in a plan view. Because there is no adhesive surface on the flap, it is easy to configure the edge of the flap to be slightly raised from the lower sheet of the animal waste collection sheet. Therefore, if an owner places the pet sheet in the wrong position, the pet sheet can be easily peeled off from the animal waste collection sheet and re-applied.

[0107] Fig. 11 is a plan view showing an example of the arrangement of adhesive surfaces in a pet sheet according to one embodiment of the present invention, and Fig. 12 is a schematic cross-sectional view showing an example of the arrangement of adhesive surfaces in a pet sheet according to one embodiment of the present invention.

[0108] 11 and 12, the adhesive surface 4a is not present in the flap portion 2a in plan view, but is present only in the region 3a, and is disposed only in a predetermined portion of the backsheet 4. As shown in Fig. 12, the adhesive surface 4a may be disposed only in the corners of the region 3a, or may be disposed in other portions of the region 3a.

[0109] In this embodiment, the backsheet 4 may be a breathable sheet. If the back sheet 4 is a breathable sheet, when a pet approaches the overlapping sheet to urinate, the pet can sense the excrement odor emanating from the lower sheet of the animal excrement disposal sheet, making it easier to accurately determine the appropriate excrement location.

[0110] In this embodiment, the pet sheet 1 has a flap region (flap portion 2a) where the absorber 3 is not present in a planar view, and the light transmittance of the flap region may be higher than the light transmittance of the region (region 3a) where the absorber is present in a planar view. Specifically, the light transmittance of the flap portion is higher than the light transmittance of the region where the absorber is present in a planar view, and is preferably 38.4% or higher, and more preferably 63.9% or higher. If the light transmittance of the flap portion 2a is higher than that of the region 3a, the light transmittance of the region 3a can be lowered to make it easier to hide urine marks, while making it easier to see urine that may be spilling out of the region 3a, making it easier to know when to replace the pet sheet.

[0111] The flap region 2a may have a portion where the top sheet and the back sheet do not overlap in a plan view. In the flap region 2a, if there is a portion where the top sheet and the back sheet do not overlap when viewed in a plane, the light transmittance of that portion will be further reduced, making it easier to see urine that may be spilling out from the edge of the product and making it easier to know when to replace the pet sheet.

[0112] In this embodiment, as shown in Figure 13, when viewed in plan, the pet sheet 1 may have a total length of non-adhesive surfaces where the adhesive surfaces are not located that is longer than the total length of the adhesive surfaces in the product length direction or product width direction, preferably in both the product length direction and product width direction. When viewed in a plane, if the total length of the non-adhesive surfaces in the product length direction and / or product width direction where the adhesive surface is not located is longer than the total length of the adhesive surfaces, if it becomes necessary to adjust the position of the pet sheet, it is easy to insert your hand, and since the engagement force is weak, it is easy to peel off the pet sheet by flipping it over.

[0113] In this embodiment, the pet sheet 1 may be configured such that, when viewed in a plane, the adhesive surface is not present in the divided area located at the center of nine divided areas formed by the intersection of a line dividing the area where the absorbent body is present into thirds in the product length direction and a line dividing the area into thirds in the product width direction, as shown in Figure 13(d) or Figure 14, for example. If there is no adhesive surface in the centrally located divided area, even if the pet sheet is applied so that the center part of the pet sheet covers the urine stains, the divided area is less likely to stick to the animal waste disposal sheet due to urine, making it easier to peel off the pet sheet. Furthermore, if there is no adhesive surface in the divided area, the total area of ​​the adhesive surface can be reduced, making it easier to prevent self-adhesion, where adhesive surfaces bond together when exposed. This effect is particularly noticeable when peeling off the release paper.

[0114] Fig. 15 is a plan view of a pet sheet according to one embodiment of the present invention, and Fig. 16 is a schematic cross-sectional view of the pet sheet according to one embodiment of the present invention.

[0115] 15 and 16, there is provided a release paper 5 that covers the adhesive surface 4a of the back sheet 4. The release paper 5 is not particularly limited as long as it can be peeled off from the back sheet 4 to expose the adhesive surface 4a when attaching the pet sheet.

[0116] 15 and 16, the release paper 5 has a non-bonded end portion 5a that is not bonded to the adhesive surface 4a. There is also a portion where the non-bonded end portion 5a and the flap region 2a overlap.

[0117] If there is an overlapping portion between the non-jointed end portion 5a and the flap region 2a, and if the flap region 2a has lower rigidity than the region 3a where the absorber is present, it is easy to flip up the flap region 2a and peel off the release paper 5. Furthermore, if the flap region 2a has higher light transmittance than the region 3a where the absorber is present, it is easy to see the release paper 5 from the topsheet side and peel off the release paper 5.

[0118] Furthermore, if the stiffness of the release paper 5 is smaller than that of the region 3a where the absorbent is present, the region 3a will be less likely to bend than in the opposite case, which makes it easier to prevent the adhesive surfaces 4a from sticking together when the release paper 5 is peeled off.

[0119] 15 and 16, in plan view, the non-bonded end portions 5a are present in both the product lengthwise direction and the product widthwise direction. When the non-bonded end portions 5a are present in both the product lengthwise direction and the product widthwise direction, the user can peel off the release paper 5 from either the non-bonded end portion 5a present in the product lengthwise direction or the product widthwise direction, thereby reducing stress when peeling off the release paper 5.

[0120] The non-joined end portion 5a may have different lengths in the product longitudinal direction and the product transverse direction. If the lengths of the non-bonded end portions 5a are different in the longitudinal and transverse directions of the product, it becomes easier to provide adhesive surfaces 4a at the product ends while increasing the area of ​​the non-bonded end portions 5a. Therefore, for example, it becomes easier to peel the release paper 5 diagonally on the product, making it easier to prevent misalignment of the attachment position. If the lengths of the non-bonded end portions 5a are different in the longitudinal and transverse directions of the product, and the release paper 5 has a mark indicating that it should be peeled diagonally on the product, it becomes easier to guide the user to peel the release paper 5 diagonally on the product, making it easier to prevent misalignment of the attachment position.

[0121] 15 and 16, the release paper 5 is made up of a single sheet. When the release paper 5 is made up of a single sheet, the release paper 5 can be easily peeled off in one step. In addition, the release paper 5 can be easily peeled off in a diagonal direction of the product, which makes it easier to prevent the attachment position from shifting.

[0122] On the other hand, when there are multiple adhesive surfaces 4a, multiple release papers 5 may be provided to cover each adhesive surface, as in the example shown in Figure 17. By providing multiple release papers 5 to cover each adhesive surface, the amount of waste generated when attaching the pet sheet can be reduced, and since the size of the release paper is smaller than when using a single piece, there is less risk of the pet sheet bending when peeled off, making it easier to prevent the adhesive surfaces 4a from sticking together. In this embodiment, it is preferable that the adhesive surfaces 4a are arranged at the four corners of the back sheet 4, and that a plurality of release papers 5 are provided to cover each of the adhesive surfaces 4a.

[0123] FIG. 18 is a plan view showing an example of the arrangement of adhesive surfaces in a pet sheet according to one embodiment of the present invention.

[0124] In the example shown in Figure 18, adhesive surface 4a is present at the product center and product edge in plan view. Here, "product center" refers to the divided region located at the center of nine divided regions formed by the intersection of a line dividing the region where the absorbent body is present in thirds in the product length direction and a line dividing the region where the absorbent body is present in thirds in the product width direction in plan view. Also, "product side" refers to any of the eight regions other than the divided region located at the center of nine divided regions formed by the intersection of a line dividing the region where the absorbent body is present in thirds in the product length direction and a line dividing the region where the absorbent body is present in thirds in the product width direction in plan view. The length of adhesive surface 41a in the center of the product in the width direction of the product is longer than the length of adhesive surfaces 42a in the side parts of the product in the width direction of the product. As a result, when release paper 5 is provided, the non-bonded end portions 5a are located at the four corners of the product, making it easier to pull release paper 5 in the diagonal direction of the product and preventing self-adhesion between adhesive surfaces.

[0125] FIG. 19 is a plan view showing an example of the arrangement of adhesive surfaces in a pet sheet according to one embodiment of the present invention.

[0126] 19, adhesive surfaces 4a are present in the center and side portions of the product in a plan view. The length of adhesive surface 41a in the center of the product in the width direction of the product is shorter than the length of adhesive surface 42a in the side portions of the product in the width direction of the product. As a result, after the pet sheet is applied, the four corners of the pet sheet are joined together, making it less likely to slip.

[0127] FIG. 20 is a plan view showing an example of the arrangement of adhesive surfaces in a pet sheet according to one embodiment of the present invention.

[0128] 20, the direction in which the adhesive surface 4a extends is the same as the direction in which the non-bonded end portion 5a extends. The adhesive surface 4a is also arranged intermittently in a direction perpendicular to the direction in which the non-bonded end portion 5a extends. This creates areas at both ends of the release paper 5 that are not bonded to the adhesive surface 4a, making it easier to peel off the release paper 5 and less likely for the adhesive surface 4a to stick to itself.

[0129] The end of the product that intersects with the direction in which the adhesive surface 4a extends may be bonded to the adhesive surface 4a, so that the non-bonded end 5a extends in one direction, making it easier for the user to turn over the release paper 5 in one direction.

[0130] (Pet Sheet Manufacturing Method) The pet sheet according to the embodiment can be manufactured, for example, as follows. (1) Manufacturing of surface sheets Fibers (e.g., PET (core) / PE (sheath) core-sheath composite fibers) containing a predetermined amount of white pigment (e.g., titanium oxide) are fed into a carding machine, and the core-sheath composite fibers are opened in the carding machine to form a web. The formed web is then transported further downstream in the transport direction, for example, to an air-through heating device, where the fibers in the web are entangled to obtain a hydrophilic nonwoven fabric that will serve as the topsheet. (2) Manufacturing of absorbent materials A substantially flat absorbent core containing the above-described absorbent material is prepared, and the above-described upper sheet is attached to the upper surface of the absorbent core.The upper sheet and the absorbent core are then covered with an optional core wrap sheet to obtain an absorbent body. (3) Manufacture of animal waste disposal sheets The second surface of the above-mentioned top sheet is bonded to one surface of the absorbent body on the upper sheet side, for example, using a hot melt adhesive, and then a non-breathable polyethylene sheet is placed as a back sheet on the other surface of the absorbent body on the second absorbent core side, and with the absorbent body sandwiched between the top sheet and the back sheet, the peripheral edges of the top sheet and the back sheet are bonded together using a hot melt adhesive, thereby obtaining an animal waste disposal sheet of the present invention as in the above-mentioned embodiment.

[0131] The pet sheet of the present invention is not limited to the above-described embodiments or the examples described below, and can be appropriately combined or modified within the scope of the purpose and intent of the present invention. For example, in yet another embodiment of the present invention, the pet sheet may include an intermediate sheet between the top sheet and the absorbent, between the absorbent and the back sheet, or both, that has liquid diffusibility in the product length direction L and / or product width direction W. When the pet sheet includes such an intermediate sheet, the intermediate sheet can diffuse excrement in the product length direction L and / or product width direction W while allowing the absorbent to absorb it, thereby achieving excellent absorption efficiency and exhibiting high absorption performance such as reduced liquid return. In this specification, ordinal numbers such as "first" and "second" are used to distinguish between items to which the ordinal numbers are assigned, and do not indicate the order, priority, importance, etc. of each item.

[0132] <Kit> The kit according to this embodiment includes the pet sheet and an animal waste disposal sheet having a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body disposed between these sheets. According to the kit of this embodiment, the adhesive backing sheet allows owners to simply place the sheet over urine stains on the animal waste disposal sheet, ensuring reliable concealment. Furthermore, the light transmittance of 60% or less makes it difficult for pets to see urine stains when looking at the reusable sheet. Therefore, pets will properly place themselves on the reusable sheet when defecating, avoiding the area where the urine stains were, reducing the risk of leaking or wetting their paws outside the reusable sheet.

[0133] In the kit according to the present embodiment, the color of the region of the pet sheet where the absorbent is present and the color of the region of the animal waste collection sheet where the absorbent is present may be the same color system in a plan view. Here, "same color system" means that a user can determine that the color of the region of the pet sheet where the absorbent is present and the color of the region of the animal waste collection sheet where the absorbent is present are the same color. Specifically, this refers to a region where the color difference when measured using a Konica Minolta CR-300 color difference meter or an equivalent device is less than 13, or a region where the deviation in a 24-color color chart classified by the Ostwald color wheel is 1 or less. If the color of the area where the absorbent body of the pet sheet is present and the color of the area where the absorbent body of the animal waste collection sheet is present are the same color family, when placing the pet sheet on top of the animal waste collection sheet, the owner is less likely to feel uncomfortable as if they are placing something on top of the animal waste collection sheet to cover urine stains. Also, before getting on the reusable sheet, the pet is less likely to feel uncomfortable enough to mistake the reusable sheet for a new animal waste collection sheet, making it more likely that the pet will not avoid the reusable sheet.

[0134] In the kit according to this embodiment, the colors of the pet sheets and animal waste collection sheets are not particularly limited and may be blue, green, gray, white, etc. Here, blue is 13 to 19 on the Ostwald color wheel, and green is 19 to 24 on the Ostwald color wheel.

[0135] In the kit according to this embodiment, the maximum length L2 of the pet sheet may be greater than the maximum length L1 in the vertical or horizontal direction when 30 cc of artificial urine is dropped onto the animal excrement collection sheet. If L2 is larger than L1, even if the animal waste disposal sheet is changed less frequently, the owner can easily hide the urine stains by simply placing a pet sheet over them, making it easier to hide the urine stains more reliably. The artificial urine is not particularly limited as long as it is used to evaluate absorbent articles, and may be, for example, an aqueous solution consisting of 0.780% by mass of sodium chloride, 0.022% by mass of calcium chloride, 0.038% by mass of magnesium sulfate, and 0.002% by mass of Blue No. 1 dye, and ion-exchanged water.

[0136] <Animal excrement disposal sheet> The animal excrement collection sheet according to this embodiment is used by overlapping a pet sheet on top of the excrement area.

[0137] The animal waste collection sheet of this embodiment comprises a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body disposed between these sheets, and the maximum length L2 of the pet sheet is greater than the maximum length L1 in the vertical or horizontal direction when 30 cc of artificial urine is dropped onto the animal waste collection sheet. If L2 is greater than L1, the owner can hide urine stains simply by placing a pet sheet over the stains, even if the animal waste disposal sheet is changed less frequently. [Example]

[0138] The present invention will be described in more detail below with reference to examples, but the present invention is not limited to these examples.

[0139] (Pet sheet manufacturing) The top sheet, absorbent body and back sheet were joined together by a known method to obtain pet sheets for use in each test example.

[0140] (Test Example 1: Evaluation of Light Transmittance) Standard calibration was performed according to the regulations of the Haze Meter NDH7000SP II (Nippon Denshoku Industries Co., Ltd.), and each sample sheet (30 mm × 30 mm) shown in Table 1 was set and the light transmittance (%) was measured. The results are shown in Table 1. Each sample was also visually observed and the urine stain visibility was evaluated according to the following criteria. The results are shown in Table 1. ○: No visible urine traces. △: Urine stains are slightly visible. ×: Urine stains are visible. Each sample was attached to an animal waste disposal sheet to obtain a reusable sheet. Dogs' excretion behavior was observed using the reusable sheet, and visual discomfort was evaluated according to the following criteria. The results are shown in Table 1. ○: The dog defecated on the layered sheet. △: The dog avoided the overlapping sheet and excreted in another place on the pet sheet. ×: The dog avoided the overlapping sheets and excreted outside the pet sheet.

[0141] [Table 1]

[0142] In Table 1, the abbreviations have the following meanings: Tt: Total light transmittance (%): The transmittance of all light rays passing through the test piece, including both parallel (PT) and diffuse (Dif) components. (1): Sample having a top sheet, an absorbent body and a back sheet (the same applies to the following tables). T / S: Sample of top sheet only (same as in the table below). B / S: Sample of back sheet only (same as in the table below). T / S, B / S: Samples of only the top sheet and back sheet (same in the table below).

[0143] (Test Example 2: Evaluation of product thickness) In a plan view of each sample shown in Table 2, the thickness of the center of each of the nine divided regions formed by the intersection of a line dividing region 3a into three equal parts in the product length direction L and a line dividing region 3a into three equal parts in the product width direction W was measured using a PEACOCK thickness measuring device JB 0.05 mm (manufactured by Ozaki Seisakusho Co., Ltd.), and the average value of the thicknesses at the nine points was taken as the product thickness. The results are shown in Table 2. Moreover, urine stain visibility was evaluated in the same manner as in Test Example 1. The results are shown in Table 2. In addition, visual discomfort was evaluated in the same manner as in Test Example 1. The results are shown in Table 2.

[0144] [Table 2]

[0145] (Test Example 3: Evaluation of the area ratio of the absorbent body) The area ratio (%) of the region where the absorbent body was present to the entire surface of each sample was calculated from the size of each sample and the size of the absorbent body when viewed in plan. The results are shown in Table 3. In addition, when each sample was reattached to an animal waste disposal sheet after being attached once, any misalignment was checked, and the ease of gripping the flap was evaluated according to the following criteria. The results are shown in Table 3. ○: No misalignment occurred when the sample was reattached. △: Slight misalignment occurred when the sample was reattached. ×: Misalignment occurred when the sample was reattached.

[0146] [Table 3]

[0147] (Test Example 4: Evaluation of the difference in thickness between the region where the absorbent body is present and the region where the absorbent body is not present) For each sample shown in Table 4, the difference in thickness between the region where the absorbent body was present and the region where no absorbent body was present was evaluated. The thickness of the region where the absorbent body was present was measured in the same manner as in Test Example 2. The thickness of the region where no absorbent body was present (flap portion) was measured in the same manner as in Test Example 2, except that measurements were taken at an arbitrary point in the flap portion. The results are shown in Table 4. Each sample was also visually observed, and the visibility of the flap portion was evaluated according to the following criteria. The results are shown in Table 4. ○: The flap is visible. ×: The flap portion cannot be seen. Furthermore, each sample was evaluated for visual discomfort in the same manner as in Test Example 2. The results are shown in Table 4.

[0148] [Table 4]

[0149] (Test Example 5: Evaluation of product size) The product size was measured for each sample shown in Table 5. The results are shown in Table 5. Each sample was also evaluated for ease of attachment to and detachment from the animal excrement collection sheet according to the following criteria. The results are shown in Table 5. ○: Can be easily attached and detached from the animal waste disposal sheet. △: It is somewhat difficult to attach and detach from the animal waste disposal sheet. ×: Difficult to smoothly attach and detach from the animal waste disposal sheet.

[0150] [Table 5]

[0151] (Test Example 6: Evaluation using KES compression property tester) The center of each sample (30 mm x 30 mm) shown in Table 6 was gently pinched between the upper and lower disks to a compression area (disk area) of 2.0 cm. 2 The thickness dimension T0 of each sample under a load of 0.49 hPa was measured. Next, the measurement sample was compressed at a rate of 0.02 mm / s until it reached a load of 49.03 hPa, and the thickness dimension Tm under a load of 49.03 hPa was measured. The work required to compress the sample from thickness T0 to thickness Tm (N·m / m 2 The compression recovery rate RC (%) was calculated using the following formula, where WC is the work required to restore the thickness from Tm to TO, and WC2 is the work required to restore the thickness from Tm to TO. The results are shown in Table 6. RC(%)=WC2 / WC×100

[0152] Each sample was attached to the urine stain on the animal waste disposal sheet, and the sample was pressed with a finger to evaluate the feel of the urine according to the following criteria. The results are shown in Table 6. ○: No sensation of urine. △: Sensation of urine was slightly felt. ×: Urine was felt. Each sample was attached to an animal waste disposal sheet to obtain a reusable sheet. Dogs' excretion behavior was observed using the reusable sheet, and the tactile discomfort was evaluated according to the following criteria. The results are shown in Table 6. ○: The dog defecated on the layered sheet. △: The dog defecated on the stacked sheet, but showed signs of changing position. ×: After the dog got on the stacked sheets, it avoided them and excreted in another part of the pet sheet.

[0153] [Table 6]

[0154] (Test Example 7: Evaluation of Qmax Value) For each test example sample, the absorbent core or non-absorbent core region was placed on a Thermocool (constant temperature table) set at 20°C and left for a while, and then the sensor part of a T-Box heated to 30°C was placed so that the sample and the sensor part were facing each other and in contact, and the Qmax value was measured. The results are shown in Table 7. In Table 7, "tissue" refers to a sample containing only the core wrap. Each sample was attached to the urine stain on the animal waste disposal sheet, and the sample was touched with a finger to evaluate the cool feeling to the touch according to the following criteria. The results are shown in Table 7. ○: There was no cooling sensation. △: A slight cooling sensation was felt. ×: I felt a cold sensation.

[0155] [Table 7]

[0156] (Test Example 8: Evaluation of stiffness of region where absorber is present) For each sample shown in Table 8, the bending resistance (mN) of the region where the absorbent body 3 was present was measured using the above procedure. The results are shown in Table 8. Furthermore, the urine feel of each sample was evaluated in the same manner as in Test Example 6. The results are shown in Table 8. Further, each sample was evaluated for tactile discomfort in the same manner as in Test Example 6. The results are shown in Table 8.

[0157] [Table 8] [Explanation of symbols]

[0158] 1 Pet Sheet 2 Surface sheet 2a Flap section 3. Absorbent 31 Upper seat 32 Absorption Core 33 Core Wrap Sheet 3a Area where the top sheet, back sheet and absorbent body are present 4 Back sheet 4a Adhesive surface 5 Release paper 5a Unjoined end

Claims

1. A pet sheet used to be layered on an animal waste disposal sheet, The device comprises a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body disposed between these sheets, the backsheet has an adhesive surface; The WC value measured by a KES compression property tester is 0.03 to 0.35; The pet sheet, wherein the top sheet, the back sheet and the absorbent body are arranged so that the light transmittance is 60% or less.

2. The pet pad according to claim 1, wherein the top sheet, the back sheet and the absorbent body are arranged so that the product thickness is more than 0.2 mm and not more than 10 mm.

3. 2. The pet sheet according to claim 1, wherein the top sheet, the back sheet and the absorbent are arranged so that, in a plan view, the area of the region where the absorbent is present is 80% or less of the entire surface of the pet sheet.

4. The pet sheet according to claim 1, wherein the back sheet and the absorbent are arranged so that the difference in thickness between the area where the absorbent is present and the flap area where the absorbent is not present is 0.3 mm or more and 5 mm or less.

5. Product size is 1500cm ２ The pet sheet according to claim 1, wherein:

6. Qmax value is 1.0 W / cm ２ The pet sheet according to claim 1, wherein:

7. The pet sheet according to claim 1, wherein the back sheet is a breathable sheet.

8. 2. The pet pad according to claim 1, wherein the top sheet, the back sheet, and the absorbent body are arranged so that the bending resistance of the region where the absorbent body is present is 0.1 to 3.0 mN.

9. The pet sheet according to any one of claims 1 to 8, an animal waste disposal sheet comprising a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body disposed between these sheets; Kit including:

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