Sanitary sheet

Abstract

To provide a sanitary sheet that can prevent skin irritation, rashes, etc., while also preventing underwear from becoming soiled. [Solution] The sanitary sheet 1 comprises a sheet-like liner member 10 that extends in the front-to-back direction and the left-to-right direction and has a surface 10a and a back surface 10b, and an adhesive member 20 disposed on the back surface 10b of the liner member 10, and is attachable to shorts 50. The liner member 10 is made of a woven or knitted fabric. On the back surface 10b of the liner member 10, there is a stain-resistant member 60 that is positioned between the first adhesive member 21 and the second adhesive member 22 in the left-to-right direction, with at least a portion of it spaced apart from the first adhesive member 21 and the second adhesive member 22, and which is less permeable to blood and urine than the liner member 10.

Description

Technical Field

[0001] The present invention relates to a sanitary sheet that can be attached to underwear.

Background Art

[0002] Conventionally, in body fluid absorbing articles such as menstrual pads and diapers, those made of paper or chemical fibers are known. Body fluid absorbing articles made of paper or chemical fibers are inexpensive and disposable, so they are hygienic, and in recent years, they have become mainstream in body fluid absorbing articles such as menstrual pads and diapers. However, body fluid absorbing articles made of paper or chemical fibers have a poor texture, and when used, skin roughness, rash, etc. may occur.

[0003] On the other hand, conventionally, in body fluid absorbing articles such as menstrual pads and diapers, body fluid absorbing articles made of woven or knitted fabrics such as cloth are also known. Body fluid absorbing articles made of woven or knitted fabrics such as cloth have a good texture, so skin roughness, rash, etc. are unlikely to occur.

[0004] For example, Patent Document 1 discloses a body fluid absorbing article and a sanitary sheet that can be attached to underwear. This sanitary sheet includes a liner member made of a woven or knitted fabric through which blood and urine can pass.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] However, while liner materials made of woven or knitted fabrics are less likely to cause skin irritation or rashes, if the sanitary sheet is attached directly to underwear, highly viscous bodily fluids such as vaginal discharge are less likely to pass through, but less viscous bodily fluids such as blood and urine may pass through, potentially soiling the underwear. When the sanitary sheet is attached to a bodily fluid absorbent product and used as a skin protection sheet, blood and urine can be actively allowed to pass through and absorbed by the bodily fluid absorbent product. However, when attached to underwear and used as a stain-resistant sheet, it is preferable that small amounts of blood and urine be absorbed by the sanitary sheet.

[0007] This invention provides a sanitary sheet that can prevent skin irritation, rashes, and other skin problems while also preventing underwear from becoming soiled. [Means for solving the problem]

[0008] The present invention A sheet-like liner member having a front surface and a back surface, extending in the front-to-back direction and in the left-to-right direction perpendicular to the front-to-back direction, The liner member comprises an adhesive member disposed on the back surface of the liner member, A sanitary sheet that can be attached to underwear, The liner member is made of a woven or knitted fabric through which blood and urine can pass. The adhesive member is One side adheres to the back surface of the liner member, The other side is detachably adhesive to the underwear, At a position a predetermined distance away from the center line in the left-right direction of the liner member, a first adhesive member extending in the front-rear direction is provided, The liner member has a second adhesive member extending in the front-rear direction at a predetermined distance from the center line of the liner member to the other side, On the back surface of the liner member, there is a stain-resistant member that is positioned between the first adhesive member and the second adhesive member in the left-right direction, with at least a portion of it spaced apart from the first adhesive member and the second adhesive member, and which is less permeable to blood and urine compared to the liner member. [Effects of the Invention]

[0009] According to the present invention, when the sanitary sheet is attached to underwear, it is possible to suppress the soiling of the underwear while preventing skin roughness, chafing, etc. from occurring.

Brief Explanation of Drawings

[0010] [Figure 1] It is a view of the sanitary sheet 1 of the first embodiment of the present invention as seen from the back side. [Figure 2] It is a cross-sectional view taken along the line A-A of the sanitary sheet 1 in FIG. 1. [Figure 3] It is a view for explaining the attachment of the sanitary sheet 1 in FIG. 1 to the shorts 50. [Figure 4] It is a cross-sectional view of the main part for explaining the peeling of the sanitary sheet 1 in FIG. 1 from the shorts 50. [Figure 5] It is a comparison view with FIG. 4 for explaining the peeling of the sanitary sheet 1 from the shorts 50 when the adhesive member does not extend to the peripheral edge. [Figure 6] It is a view of the sanitary sheet 100 of the second embodiment of the present invention as seen from the back side. [Figure 7] It is a cross-sectional view taken along the line B-B of the sanitary sheet 100 in FIG. 6. [Figure 8] It is a view of the sanitary sheet 100A of the first modification of the second embodiment of the present invention as seen from the back side. [Figure 9] It is a view of the sanitary sheet 100B of the second modification of the second embodiment of the present invention as seen from the back side.

Modes for Carrying Out the Invention

[0011] Hereinafter, each embodiment of the sanitary sheet of the present invention will be described based on the accompanying drawings.

[0012] [First Embodiment] First, the sanitary sheet 1 of the first embodiment of the present invention will be described with reference to FIGS. 1 to 5.

[0013] [Configuration of Sanitary Sheet] As shown in FIG. 1, the sanitary sheet 1 of the present embodiment includes a liner member 10, an adhesive member 20, and a stain-proof member 60.

[0014] The liner member 10 is made of a knitted or woven fabric. The knitted or woven fabric is a fabric in which warp and weft intersect at a substantially right angle and are in close contact with adjacent yarns to form a plane continuously, or a knitted fabric in which the next yarn is hooked on a loop to continuously form loops to form a plane. The liner member 10 of the present embodiment is made of a knitted or woven fabric of cotton fibers. The liner member 10 is in a sheet shape extending in the front-back direction and the left-right direction orthogonal to the front-back direction, and has a front surface 10a (see FIG. 2) and a back surface 10b. The liner member 10 has a substantially rectangular shape in which the length in the front-back direction is longer than the length in the left-right direction. The liner member 10 has a peripheral edge portion 11. The peripheral edge portion 11 has a pair of front edge portions 11Fr and rear edge portions 11Rr extending in the left-right direction and a pair of left edge portions 11L and right edge portions 11R extending in the front-back direction.

[0015] In the present specification and the like, for the sake of simplicity and clarity of explanation, the front-back, left-right, and up-down directions are described according to the directions as seen from the user in the usage state of the sanitary sheet 1. In the drawings, the front of the sanitary sheet 1 is shown as Fr, the rear as Rr, the left side as L, the right side as R, the upper side as U, and the lower side as D.

[0016] Since the liner member 10 is made of a knitted or woven fabric, highly viscous body fluids such as feces do not pass through the liner member 10 but penetrate into the liner member 10 or stay on the front surface 10a of the liner member 10. On the other hand, low-viscosity body fluids such as blood and urine partially penetrate into and are absorbed by the liner member 10, and the rest passes through the liner member 10. The body fluids that pass through include not only blood and urine but also vaginal secretions, anal secretions, liquid medicines, and the like. The amount of body fluid absorbed by the liner member 10 depends on the water retention capacity of the liner member 10, but it is possible to absorb more body fluid by preventing the passage of the body fluid and spreading it on the liner member 10.

[0017] The adhesive member 20 is disposed on the back surface 10b of the liner member 10.

[0018] The adhesive member 20 includes a long, tape-shaped first adhesive member 21 that extends in the front-rear direction at a predetermined distance to the left of the center line CL in the left-right direction of the liner member 10, and a long, tape-shaped second adhesive member 22 that extends in the front-rear direction at a predetermined distance to the right of the center line CL in the left-right direction of the liner member 10.

[0019] The first adhesive member 21 extends from the front edge 11Fr to the rear edge 11Rr of the liner member 10 at a predetermined distance from the left edge 11L in the left-right direction toward the center of the liner member 10. The second adhesive member 22 extends from the front edge 11Fr to the rear edge 11Rr of the liner member 10 at a predetermined distance from the right edge 11R in the left-right direction toward the center of the liner member 10.

[0020] As shown in Figure 2, the adhesive members 20 (first adhesive member 21, second adhesive member 22) include a support 201, a first adhesive layer 202a provided on the upper surface 201a of the support 201, and a second adhesive layer 202b provided on the lower surface 201b of the support 201. Therefore, the upper surface 20a of the adhesive members 20 (first adhesive member 21, second adhesive member 22) is formed by the first adhesive layer 202a, and the lower surface 20b of the adhesive members 20 (first adhesive member 21, second adhesive member 22) is formed by the second adhesive layer 202b. The adhesive members 20 (first adhesive member 21, second adhesive member 22) adhere to the back surface 10b of the liner member 10 by the adhesion of the first adhesive layer 202a to the back surface 10b of the liner member 10.

[0021] The second adhesive layer 202b of the adhesive member 20 (first adhesive member 21, second adhesive member 22) can be peelably adhered to the shorts 50 (see Figure 3). As a result, the lower surface 20b of the adhesive member 20 (first adhesive member 21, second adhesive member 22) can be peelably adhered to the shorts 50. By adhering the lower surface 20b of the adhesive member 20 (first adhesive member 21, second adhesive member 22) to the shorts 50, the sanitary sheet 1 can be attached to the shorts 50. The sanitary sheet 1 is not limited to shorts 50; it can be attached to any underwear to prevent the underwear from getting soiled. It can also be attached to sanitary napkins, diapers, incontinence pads, reusable cloth napkins, etc., and used as a skin protection sheet for sanitary napkins, diapers, incontinence pads, etc.

[0022] In this embodiment, the first adhesive layer 202a and the second adhesive layer 202b are formed from the same adhesive. This allows the adhesive members 20 (first adhesive member 21, second adhesive member 22) to be manufactured with easy processing.

[0023] In this way, the upper surface 20a of the adhesive member 20 (first adhesive member 21, second adhesive member 22) is adhered to the back surface 10b of the liner member 10. Furthermore, in the state before use, the release paper 30 is peelably adhered to the lower surface 20b of the adhesive member 20 (first adhesive member 21, second adhesive member 22) (see Figure 3(a)).

[0024] The anti-fouling member 60 is preferable to the liner member 10 in which low-viscosity bodily fluids such as blood and urine have difficulty passing through, and preferably, low-viscosity bodily fluids such as blood and urine cannot pass through at all.

[0025] The anti-fouling member 60 is positioned on the back surface 10b of the liner member 10.

[0026] The anti-fouling member 60 is positioned between the first adhesive member 21 and the second adhesive member 22 in the left-right direction, with at least a portion of it spaced apart from the first adhesive member 21 and the second adhesive member 22. In this embodiment, it is positioned so as to overlap with the center line CL of the liner member 10.

[0027] The width of the anti-fouling member 60 is preferably wider than the width of the first adhesive member 21 and wider than the width of the second adhesive member 22, and preferably wider than the sum of the widths of the first adhesive member 21 and the second adhesive member 22, i.e., wider than the widths of the first adhesive member 21 and the second adhesive member 22.

[0028] The anti-fouling member 60 is a long, tape-like member extending in the front-rear direction, preferably extending from the front edge 11Fr to the rear edge 11Rr of the liner member 10.

[0029] As shown in Figure 2, the antifouling member 60 comprises a support 601 and a third adhesive layer 602a provided on the upper surface 601a of the support 601. Therefore, the upper surface 60a of the antifouling member 60 is formed by the third adhesive layer 602a, and the lower surface 20b of the antifouling member 60 is formed by the lower surface 601b of the support 601. The antifouling member 60 adheres to the back surface 10b of the liner member 10 by the adhesion of the third adhesive layer 602a to the back surface 10b of the liner member 10.

[0030] The support 601 of the anti-fouling member 60 may be formed from the same material as the support 201 of the adhesive member 20, or from a different material. Furthermore, the third adhesive layer 602a may be formed from the same adhesive as the first adhesive layer 202a and the second adhesive layer 202b of the adhesive member 20, or from a different adhesive. Using common materials for the support and adhesive can reduce manufacturing costs.

[0031] In this way, the upper surface 60a of the anti-fouling member 60 is adhered to the back surface 10b of the liner member 10. The lower surface 60b of the anti-fouling member 60 is covered with release paper 30 in the state before use (see Figure 3(a)).

[0032] <Attaching the sanitary sheet to the shorts> As shown in Figure 3(a), when the release paper 30 attached to the lower surface 20b of the adhesive member 20 (first adhesive member 21, second adhesive member 22) is peeled off, the lower surface 20b of the adhesive member 20 (first adhesive member 21, second adhesive member 22) and the lower surface 60b of the anti-fouling member 60 are exposed downwards.

[0033] Next, as shown in Figure 3(b), the sanitary sheet 1 is positioned so that the back surface 10b of the liner member 10 is in contact with the crotch portion 51 of the shorts 50. When the sanitary sheet 1 is pressed against the crotch portion 51 of the shorts 50, the second adhesive layer 202b of the adhesive member 20 (first adhesive member 21, second adhesive member 22) of the sanitary sheet 1 adheres to the crotch portion 51 of the shorts 50. In this way, the sanitary sheet 1 is attached to the crotch portion 51 of the shorts 50.

[0034] Then, with the sanitary sheet 1 attached to the crotch portion 51 of the shorts 50, the shorts 50 are used. Therefore, when the shorts 50 are used, the crotch portion 51 of the shorts 50 does not come into contact with the skin, but rather the surface 10a of the liner member 10 of the sanitary sheet 1 comes into contact with the skin.

[0035] As a result, when wearing shorts 50 with the sanitary sheet 1 attached, the part that comes into contact with the skin is the liner material 10 of the sanitary sheet 1, not the crotch area 51. Since the liner material 10 is made of a woven or knitted cotton fabric that feels good against the skin, it does not cause discomfort to the user and prevents skin irritation, rashes, etc.

[0036] Furthermore, since the liner member 10 is made of a woven or knitted fabric, highly viscous bodily fluids such as vaginal discharge do not pass through the liner member 10, but rather permeate the liner member 10 or remain on the surface 10a of the liner member 10. Therefore, by attaching the sanitary sheet 1 and using the shorts 50, it is possible to prevent the crotch area 51 of the shorts 50 from becoming soiled by vaginal discharge or other bodily fluids.

[0037] Furthermore, since the anti-fouling member 60 is located on the back surface 10b of the liner member 10, between the first adhesive member 21 and the second adhesive member 22, and is positioned in the crotch area 51, even if a small amount of bodily fluid is secreted due to urine leakage, the small amount of bodily fluid is diffused onto the liner member 10 by the anti-fouling member 60 and retained by the liner member 10. Therefore, it is prevented that a small amount of bodily fluid will pass through the sanitary sheet 1 and soil the shorts 50.

[0038] Furthermore, since the width of the anti-fouling member 60 is wider than the width of the first adhesive member 21 and also wider than the width of the second adhesive member 22, it is possible to secure a width that is wider than the width required for the fixing function of the adhesive member 20, thereby allowing each function to be performed appropriately.

[0039] Furthermore, since the first adhesive member 21 extends in the front-to-back direction at a predetermined distance from the left edge 11L of the liner member 10 toward the center, and the second adhesive member 22 extends in the front-to-back direction at a predetermined distance from the right edge 11R of the liner member 10 toward the center, when attaching the sanitary sheet 1 to the shorts 50, the sanitary sheet 1, which has a width dimension greater in the left-to-right direction than the width dimension of the crotch portion 51 of the shorts 50, can be reliably attached to the shorts 50 by the adhesive member 20. As a result, when attaching the sanitary sheet 1 to the shorts 50, the peripheral edge in the width direction of the crotch portion 51 of the shorts 50 can be reliably covered with the sanitary sheet 1, thereby reliably preventing the crotch portion 51 of the shorts 50 from becoming soiled.

[0040] Furthermore, although the width of the crotch area 51 varies slightly depending on the shorts 50, the adhesive member 20 is positioned at a predetermined distance from both left and right peripheral edges of the liner member 10 toward the center. This allows the sanitary sheet 1 to be reliably attached to the shorts 50 even if the crotch area 51 is narrow, thus accommodating a variety of shorts 50 with different crotch area widths.

[0041] In addition, when attaching the sanitary sheet 1 to shorts 50 in which the periphery of the crotch portion 51 in the width direction has been decorated with lace processing, raw edge processing, etc., the adhesive member 20 of the sanitary sheet 1 adheres to the periphery of the decorated crotch portion in the width direction, preventing damage to the periphery of the decorated crotch portion 51 in the width direction.

[0042] Furthermore, even if the edges of the liner member 10 in the width direction peel up, the adhesive member 20 is positioned at a predetermined distance from both the left and right peripheral edges of the liner member 10 toward the center, thus preventing the adhesive member 20 from directly touching the skin. As a result, even if the edges of the liner member 10 in the width direction peel up, skin irritation caused by the adhesive member 20 directly touching the skin can be suppressed.

[0043] Since the adhesive members 20 (first adhesive member 21, second adhesive member 22) are peelably attached to the shorts 50, after using the shorts 50 with the sanitary sheet 1 attached, the sanitary sheet 1 can be peeled off from the shorts 50 as shown in Figure 3(c), and only the sanitary sheet 1 can be discarded, and the shorts 50 can be washed and reused.

[0044] Thus, the sanitary sheet 1 can be used as a removable panty liner that prevents the crotch area 51 of the shorts 50 from becoming soiled by vaginal discharge or small amounts of bodily fluids by attaching it to the crotch area 51 of the shorts 50.

[0045] <Peeling of the sanitary sheet from the shorts> Conventional panty liners typically have adhesive applied to one side, allowing them to be attached to underwear by the adhesive. However, when using panty liners with adhesive applied to underwear, the adhesive strength is often weak, causing them to shift, wrinkle, or even peel off.

[0046] In this embodiment, the sanitary sheet 1 has an adhesive member 20 that has a support 201. The second adhesive layer 202b that adheres to the shorts 50 is attached to the support 201. Therefore, an adhesive with strong adhesive strength can be used for the second adhesive layer 202b, and even when the sanitary sheet 1 is attached to the shorts 50, it is possible to suppress situations in which the sanitary sheet 1 shifts, wrinkles, or peels off from the shorts 50. Furthermore, when the sanitary sheet 1 is peeled off from the shorts 50, the second adhesive layer 202b peels off from the shorts 50 together with the support 201. This prevents the adhesive member 20 from remaining on the shorts 50 when the sanitary sheet 1 is peeled off from the shorts 50.

[0047] Furthermore, when peeling the sanitary sheet 1 from the shorts 50, it is often peeled off in the front-to-back direction from the front edge 11Fr or rear edge 11Rr. For example, as shown in Figure 5, if the adhesive member 20 does not extend to the front edge 11Fr, and the sanitary sheet 1 is peeled off from the front edge 11Fr towards the rear, a large moment is applied to the front end of the adhesive member 20, depending on the distance from the front edge 11Fr to the front end of the adhesive member 20. As a result, when peeling the sanitary sheet 1 from the shorts 50, the first adhesive layer of the adhesive member 20 may peel off from the back surface 10b of the liner member 10, and there was a risk that the adhesive member 20, along with the first adhesive layer 202a, the support 201, and the second adhesive layer 202b, would remain on the shorts 50.

[0048] In this embodiment, the first adhesive member 21 extends from the front edge 11Fr to the rear edge 11Rr of the liner member 10, and the second adhesive member 22 extends from the front edge 11Fr to the rear edge 11Rr of the liner member 10. As a result, as shown in Figure 4, when peeling the sanitary sheet 1 from the front edge 11Fr or rear edge 11Rr in the front-rear direction, no large moment is applied to the front or rear ends of the first adhesive member 21 and the second adhesive member 22, thus more reliably preventing the first adhesive member 21 and the second adhesive member from remaining on the shorts 50.

[0049] Furthermore, since the lower surface 60b of the anti-fouling member 60 in this embodiment does not have an adhesive layer, the anti-fouling member 60 will not remain on the shorts 50.

[0050] [Second Embodiment] Next, a sanitary sheet 100 according to the second embodiment of the present invention will be described with reference to Figures 6 and 7. In the following description, the same reference numerals are used for components identical to those of the sanitary sheet 1 of the first embodiment, and their descriptions will be omitted or simplified. In the sanitary sheet 1 of the first embodiment, an adhesive layer (third adhesive layer 602a) was provided only on the upper surface 601a of the support 601 of the antifouling member 60, but in the sanitary sheet 100 of the second embodiment, an adhesive layer (fourth adhesive layer 602b) is also provided on the lower surface 601b of the support 601 of the antifouling member 60. The differences between the sanitary sheet 1 of the first embodiment and the sanitary sheet 100 of the second embodiment will be described in detail below.

[0051] The anti-fouling member 60 comprises a support 601, a third adhesive layer 602a provided on the upper surface 601a of the support 601, and a fourth adhesive layer 602b provided on the lower surface 601b of the support 601. In this case, the upper surface 60a of the anti-fouling member 60 is formed by the third adhesive layer 602a, and the lower surface 60b of the anti-fouling member 60 is formed by the fourth adhesive layer 602b. The anti-fouling member 60 adheres to the back surface 10b of the liner member 10 by the adhesion of the third adhesive layer 602a to the back surface 10b of the liner member 10.

[0052] Furthermore, the fourth adhesive layer 602b of the anti-fouling member 60 can be peelably adhered to the shorts 50 (see Figure 3). This allows the lower surface 60b of the anti-fouling member 60 to be peelably adhered to the shorts 50. By adhering the lower surface 60b of the anti-fouling member 60 to the shorts 50, the position of the anti-fouling member 60 can be fixed relative to the shorts 50.

[0053] The fourth adhesive layer 602b may be formed with the same adhesive as any or all of the first adhesive layer 202a, the second adhesive layer 202b of the adhesive member 20, and the third adhesive layer 602a of the anti-fouling member 60, or it may be formed with a different adhesive.

[0054] Furthermore, the anti-fouling member 60 may be formed from the same material as the adhesive member 20, for example, from the same double-sided tape.

[0055] The sanitary sheet 100 has the upper surface 60a of the anti-fouling member 60 adhered to the back surface 10b of the liner member 10. In the state before use, the release paper 30 is removablely adhered to the lower surface 60b of the anti-fouling member 60 (see Figure 3(a)).

[0056] When attaching the sanitary sheet 100, the second adhesive layer 202b of the adhesive member 20 (first adhesive member 21, second adhesive member 22) of the sanitary sheet 1 and the fourth adhesive layer 602b of the anti-fouling member 60 are adhered to the crotch portion 51 of the shorts 50. In this way, the sanitary sheet 1 is attached to the crotch portion 51 of the shorts 50. In the second embodiment, the anti-fouling member 60 is also peelably adhered to the crotch portion 51 of the shorts 50, so the position of the anti-fouling member 60 is fixed relative to the shorts 50. Therefore, even with strenuous exercise, the anti-fouling member 60 is prevented from twisting or shifting from its desired position.

[0057] When peeling the sanitary sheet 100 from the shorts 50, the anti-fouling member 60 extends from the front edge 11Fr to the rear edge 11Rr of the liner member 10, similar to the first adhesive member 21 and the second adhesive member 22. Therefore, when peeling the sanitary sheet 100 from the front edge 11Fr or rear edge 11Rr in the front-rear direction, no large moment is applied to the front or rear end of the anti-fouling member 60, thus more reliably preventing the anti-fouling member 60 from remaining on the shorts 50.

[0058] [First modified example of the second embodiment] Next, a first modified example of the second embodiment of the present invention, the sanitary sheet 100A, will be described with reference to Figure 8. In the sanitary sheet 100 of the second embodiment, it has been explained that the adhesive member 20 and the anti-fouling member 60 may be made of the same material, in which case the adhesive member 20 and the anti-fouling member 60 may be molded integrally. In the sanitary sheet 100A of the first modified example of the second embodiment, the adhesive member 20 and the anti-fouling member 60 are connected by connecting portions 70F and 70R and molded integrally. In this embodiment, the front ends of the first adhesive member 21 and the second adhesive member 22 and the front end of the anti-fouling member 60 are connected by a connecting portion 70F, and the rear ends of the first adhesive member 21 and the second adhesive member 22 and the rear end of the anti-fouling member 60 are connected by a connecting portion 70R.

[0059] Even with such a sanitary sheet 100A, it provides the same effects as the sanitary sheet 100 of the second embodiment, and furthermore, since the adhesive member 20 and the anti-fouling member 60 can be handled integrally, handling is improved.

[0060] [Second modified example of the second embodiment] Next, a second modified example of the second embodiment of the present invention, the sanitary sheet 100B, will be described with reference to Figure 9. In the sanitary sheet 100B of the second modified example of the second embodiment, the adhesive member 20 and the anti-fouling member 60 are integrally molded as a single sheet that extends in the front-rear direction and the left-right direction and has substantially the same shape as the outer edge of the liner member 10.

[0061] Even with this type of sanitary sheet 100B, the same effects as the sanitary sheet 100 of the second embodiment are achieved, and furthermore, the adhesive member 20 and the anti-fouling member 60 can be handled integrally, thus improving handling.

[0062] Although embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and modifications, improvements, etc., can be made as appropriate. For example, in the above-described embodiment, the liner member 10 was in the shape of a substantially rectangular sheet, but its shape is not limited. The liner member 10 may be, for example, an elliptical sheet or a gourd-shaped sheet, or it may be provided with wing portions that protrude outward in the left and right directions from the left edge portion 11L and the right edge portion 11R.

[0063] Furthermore, in the above-described embodiment, the first adhesive layer 202a and the second adhesive layer 202b were formed of the same adhesive, but the first adhesive layer 202a and the second adhesive layer 202b may be formed of different adhesives. In this case, by freely selecting the adhesive used for the first adhesive layer 202a, the adhesive strength between the adhesive member 20 and the liner member 10 can be freely adjusted, and by freely selecting the adhesive used for the second adhesive layer 202b, the adhesive strength between the adhesive member 20 and the shorts 50 can be freely adjusted. For example, by making the adhesive strength of the first adhesive layer 202a stronger (greater) than that of the second adhesive layer 202b, when peeling the sanitary sheet 1 from the shorts 50, even if the second adhesive layer 202b in contact with the shorts 50 peels off, the first adhesive layer 202a in contact with the sanitary sheet 1 will not peel off from the sanitary sheet 1, and as a result, less adhesive member 20 and glue will remain on the shorts 50.

[0064] Furthermore, for example, in the above-described embodiment, the first adhesive member 21 extends from the front edge 11Fr to the rear edge 11Rr of the liner member 10, and the second adhesive member 22 extends from the front edge 11Fr to the rear edge 11Rr of the liner member 10. However, the first adhesive member 21 and the second adhesive member 22 do not necessarily have to extend in the front-to-back direction, but may extend in the left-to-right direction, as long as one end of each extends from any position on the peripheral edge 11 of the liner member 10. By peeling the sanitary sheet 1 from the shorts 50 from the peripheral edge 11 of the liner member 10 where one end of the first adhesive member 21 and the second adhesive member 22 is located, a large moment is not applied to the adhesive member 20, and it is possible to more reliably prevent the first adhesive member 21 and the second adhesive member 22 from remaining on the shorts 50. In this case, it is preferable that one end of the first adhesive member 21 and the second adhesive member 22 extends from the same peripheral edge 11 of the liner member 10, which includes the front edge 11Fr, rear edge 11Rr, left edge 11L, and right edge 11R. In this way, if the sanitary sheet 1 is peeled off the shorts 50 from any one side of the liner member 10 (front, back, left, or right), the first adhesive member 21 and the second adhesive member 22 will not remain on the shorts 50, and the sanitary sheet 1 can be easily peeled off the shorts 50.

[0065] Furthermore, in the first and second embodiments, the adhesive members 20 (first adhesive member 21, second adhesive member 22) were positioned at a predetermined distance from both ends in the left-right direction of the liner member 10 toward the center. However, the configuration is not necessarily limited to this, and the adhesive members may be positioned at both ends in the left-right direction of the liner member 10.

[0066] Furthermore, this specification includes at least the following information. Note that the components etc. in parentheses indicate those corresponding to the embodiments described above, but are not limited thereto.

[0067] (1) A sheet-like liner member (liner member 10) extending in the front-rear direction and in the left-right direction perpendicular to the front-rear direction, having a surface (surface 10a) and a back surface (back surface 10b), The liner member comprises an adhesive member (adhesive member 20) disposed on the back surface of the liner member, A sanitary sheet (sanitary sheet 1, 100, 100A, 100B) that can be attached to underwear (shorts 50), The liner member is made of a woven or knitted fabric through which blood and urine can pass. The adhesive member is One side (upper surface 20a) adheres to the back surface of the liner member, The other side (bottom surface 20b) is detachably adhesive to the underwear. At a predetermined distance from the center line (center line CL) in the left-right direction of the liner member, a first adhesive member (first adhesive member 21) extending in the front-rear direction is provided, The liner member has a second adhesive member (second adhesive member 22) extending in the front-rear direction, located at a predetermined distance from the center line on the other side (right side), On the back surface of the liner member, an anti-fouling member (anti-fouling member 60) is provided, which is positioned between the first adhesive member and the second adhesive member in the left-right direction, with at least a portion of it spaced apart from the first adhesive member and the second adhesive member, and which is less permeable to blood and urine compared to the liner member. Sanitary sheet.

[0068] According to (1), since the liner material is made of woven or knitted fabric, by attaching a sanitary sheet to the underwear, the surface of the liner material comes into contact with the skin, resulting in a pleasant feel and preventing skin irritation, rashes, etc. Furthermore, since the liner material is made of woven or knitted fabric, highly viscous bodily fluids such as vaginal discharge do not pass through the liner material but remain on the surface of the liner material. On the other hand, while less viscous bodily fluids such as blood and urine may pass through the liner material, the anti-fouling material provided on the back of the liner material diffuses them so that they spread across the liner material, thus preventing them from passing through. Therefore, when the sanitary sheet is attached directly to the underwear, it is possible to prevent the underwear from becoming soiled.

[0069] (2) A sanitary sheet as described in (1), The anti-fouling member is a long, tape-like piece extending in the front-to-back direction. Sanitary sheet.

[0070] According to (2), it is possible to prevent blood and urine from passing through the liner member in the front-to-back direction.

[0071] (3) A sanitary sheet as described in (1), The anti-fouling member is positioned so as to overlap the center line of the liner member. Sanitary sheet.

[0072] According to (3), since the anti-fouling member is provided along the center line through which blood and urine are most likely to pass, it is possible to more effectively suppress the passage of blood and urine through the liner member.

[0073] (4) A sanitary sheet as described in (1), The anti-fouling member is provided continuously from the front end peripheral edge to the rear end peripheral edge in the front-rear direction of the liner member. Sanitary sheet.

[0074] According to (4), it can be easily manufactured by cutting it together with the liner material on the production line.

[0075] (5) A sanitary sheet as described in (1), The first adhesive member is positioned at a predetermined distance from one end of the liner member in the left-right direction toward the center, The second adhesive member is positioned at a predetermined distance from the other end of the liner member in the left-right direction toward the center. Sanitary sheet.

[0076] According to (5), when attaching a sanitary sheet to underwear, a sanitary sheet with a width in the left-right direction greater than the width of the crotch area of ​​the underwear can be securely attached to the underwear using an adhesive material. This ensures that the periphery of the crotch area of ​​the underwear is securely covered with the sanitary sheet, thereby reliably preventing the crotch area of ​​the underwear from becoming soiled.

[0077] Furthermore, even if the edges of the liner material in the width direction peel up, the adhesive material is positioned at a predetermined distance from both the left and right peripheral edges of the liner material toward the center, thus preventing the adhesive material from directly touching the skin. As a result, even if the edges of the liner material in the width direction peel up, skin irritation caused by the adhesive material directly touching the skin can be suppressed.

[0078] (6) A sanitary sheet as described in any of (1) to (5), The width of the anti-fouling member in the left-right direction is wider than the width of the first adhesive member in the left-right direction, and also wider than the width of the second adhesive member in the left-right direction. Sanitary sheet.

[0079] According to (6), by ensuring a width greater than the width required for the fixing function of the adhesive member, the width required for the anti-fouling function of the anti-fouling member can be made to be wider than the width required for the fixing function of the adhesive member, each function can be performed appropriately.

[0080] (7) A sanitary sheet as described in (2), The adhesive member is The device comprises a first support (support 201), a first adhesive layer (first adhesive layer 202a) provided on one side surface (upper surface 201a) of the first support, and a second adhesive layer (second adhesive layer 202b) provided on the other side surface (lower surface 201b) of the first support. The first adhesive layer adheres to the back surface of the liner member, and is therefore adhered to the back surface of the liner member. The second adhesive layer is removable and adheres to the underwear. The aforementioned anti-fouling member is The device comprises a second support (support 601) and a third adhesive layer (third adhesive layer 602a) provided on one side surface (upper surface 601a) of the second support. The third adhesive layer adheres to the back surface of the liner member, so that it adheres to the back surface of the liner member. Sanitary sheet.

[0081] According to (7), the adhesive member has a first adhesive layer that adheres to the back surface of the liner member, and the anti-fouling member has a third adhesive layer that adheres to the back surface of the liner member, so when the sanitary sheet is peeled off the underwear, it is possible to prevent the adhesive member and the anti-fouling member from remaining on the underwear.

[0082] (8) A sanitary sheet as described in (7), The aforementioned anti-fouling member is The second support further comprises a fourth adhesive layer (fourth adhesive layer 602b) provided on the other side surface (bottom surface 601b), The fourth adhesive layer is removable and adheres to the underwear. Sanitary sheet.

[0083] According to (8), it is possible to suppress changes in the position of the anti-fouling material relative to the underwear.

[0084] (9) The sanitary sheet described in (8), The adhesive member and the anti-fouling member are made of the same material. Sanitary sheet.

[0085] According to (9), manufacturing costs can be reduced.

[0086] (10) A sanitary sheet as described in (9), The adhesive member and the anti-fouling member are molded together. Sanitary sheet.

[0087] According to (10), the adhesive member and the anti-fouling member can be treated as a single component, thus improving handling. [Explanation of Symbols]

[0088] 1, 100, 100A, 100B Sanitary Sheets 10 Liner members 10a surface 10b back side 20 Adhesive material 20a Top surface (one side) 20b Bottom surface (the other side) 21 First adhesive member 22 Second adhesive member 50 Shorts (underwear) 60 Anti-fouling material 201 Support (1st support) 201a Top surface (one side) 201b Bottom surface (the other side) 202a First adhesive layer 202b 2nd adhesive layer 601 Support (second support) 601a Top surface (one side) 601b Bottom surface (the other side) 602a Third adhesive layer 602b 4th adhesive layer CL Chuo Line

Claims

1. A sheet-like liner member having a front surface and a back surface, extending in the front-to-back direction and in the left-to-right direction perpendicular to the front-to-back direction, The liner member comprises an adhesive member disposed on the back surface of the liner member, A sanitary sheet that can be attached to underwear, The liner member is made of a woven or knitted fabric through which blood and urine can pass. The adhesive member is One side adheres to the back surface of the liner member, The other side is detachably adhesive to the underwear, At a position a predetermined distance away from the center line in the left-right direction of the liner member, a first adhesive member extending in the front-rear direction is provided, The liner member has a second adhesive member extending in the front-rear direction at a predetermined distance from the center line of the liner member to the other side, On the back surface of the liner member, an anti-fouling member is provided, which is positioned between the first adhesive member and the second adhesive member in the left-right direction, with at least a portion of it spaced apart from the first adhesive member and the second adhesive member, and which is less permeable to blood and urine compared to the liner member. Sanitary sheet.

2. A sanitary sheet according to claim 1, The anti-fouling member is a long, tape-like piece extending in the front-to-back direction. Sanitary sheet.

3. A sanitary sheet according to claim 1, The anti-fouling member is positioned so as to overlap the center line of the liner member. Sanitary sheet.

4. A sanitary sheet according to claim 1, The anti-fouling member is provided continuously from the front end peripheral edge to the rear end peripheral edge in the front-rear direction of the liner member. Sanitary sheet.

5. A sanitary sheet according to claim 1, The first adhesive member is positioned at a predetermined distance from one end of the liner member in the left-right direction toward the center, The second adhesive member is positioned at a predetermined distance from the other end of the liner member in the left-right direction toward the center. Sanitary sheet.

6. A sanitary sheet according to any one of claims 1 to 5, The width of the anti-fouling member in the left-right direction is wider than the width of the first adhesive member in the left-right direction, and also wider than the width of the second adhesive member in the left-right direction. Sanitary sheet.

7. A sanitary sheet according to claim 2, The adhesive member is It comprises a first support, a first adhesive layer provided on one side of the first support, and a second adhesive layer provided on the other side of the first support. The first adhesive layer adheres to the back surface of the liner member, and is therefore adhered to the back surface of the liner member. The second adhesive layer is removable and adheres to the underwear. The aforementioned anti-fouling member is The device comprises a second support and a third adhesive layer provided on one side of the second support. The third adhesive layer adheres to the back surface of the liner member, so that it adheres to the back surface of the liner member. Sanitary sheet.

8. A sanitary sheet according to claim 7, The aforementioned anti-fouling member is The second support further comprises a fourth adhesive layer provided on the other side of the support, The fourth adhesive layer is removable and adheres to the underwear. Sanitary sheet.

9. A sanitary sheet according to claim 8, The adhesive member and the anti-fouling member are made of the same material. Sanitary sheet.

10. A sanitary sheet according to claim 9, The adhesive member and the anti-fouling member are molded together. Sanitary sheet.

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