Liquid-absorbent sheet with auxiliary pad

Abstract

To provide a liquid-absorbent sheet equipped with an auxiliary pad, which is attached to a main body so as not to be displaced during use and has a structure that allows the auxiliary pad to be easily peeled off. [Solution] The liquid-absorbent sheet (1) with auxiliary pad of the present invention is composed of a substantially rectangular sheet-like main body (2), an attachment sheet (4), and an auxiliary pad (3), the attachment sheet is attached to the main body along both edges in the short direction at the attachment position, has two perforations for cutting on the inside of both edges, and further has a portion attached to the main body from the start and end of both edges toward the proximal perforation to the perforation or just before it, and the central portion on the inside of both edges on the underside of the auxiliary pad is attached to the portion on the inside of the two perforations of the attachment sheet. By adopting this configuration, the auxiliary pad does not shift when in use and can be easily removed.

Description

[Technical field]

[0001] The present invention relates to an absorbent sheet provided with an auxiliary pad, for example a sanitary napkin provided with an auxiliary napkin. [Background technology]

[0002] Conventionally, in order to enable long-term use of a single sanitary napkin, a sanitary napkin equipped with an auxiliary napkin has been proposed in which the auxiliary napkin is attached to the napkin with a removable adhesive force (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-097842 Summary of the Invention [Problem to be solved by the invention]

[0004] A typical sanitary napkin has an adhesive part on the non-skin side for attaching to underwear to fix its position. Patent Document 1 proposes setting the adhesive strength of the auxiliary napkin to a low level so that the sanitary napkin itself does not come off from the underwear when the auxiliary napkin is removed.

[0005] If the adhesive strength of the auxiliary napkin is weak, there is a risk that the auxiliary napkin may come off the sanitary napkin body at an unintended time during actual use, causing a misalignment. In this case, there is a problem that menstrual blood leaks and soils underwear and clothes. On the other hand, if the adhesive strength of the auxiliary napkin is strong, not only is there a risk that the sanitary napkin will come off the underwear when the auxiliary napkin is removed, but there is also a risk that the surface of the sanitary napkin body will be damaged, causing undesired menstrual blood leakage.

[0006] The present invention has been made to solve the problems of the conventional examples described above, and has an object to provide a liquid-absorbent sheet with an auxiliary pad, such as a sanitary napkin with an auxiliary napkin, which is free from the risk of the auxiliary pad becoming misaligned during use and which can be removed with a light force. [Means for solving the problem]

[0007] In order to achieve the above object, the liquid-absorbent sheet with the auxiliary pad of the present invention has a substantially rectangular shape. And there is a front and back along the longitudinal direction Sheet Absorbent A main body (2), The sheet material is shorter in length than the main body and has a property of not allowing liquid to seep out or leak. A mounting sheet (4), A liquid-absorbent material having a length shorter than that of the main body. Auxiliary pad (3) and 、 It is composed of The above The mounting sheet is The area is forward of the longitudinal center position. At the attachment position, it is attached along both edges of the short side of the main body, two perforations (4d, 4e) for cutting are provided inside the both edges, and further, it has a portion attached to the main body from the start and end of the both edges toward the proximal perforation to the location of the perforation or just before it, and the central portion (3c) located inside the both edges of the underside of the auxiliary pad is attached to the portion (4d) inside the two perforations of the attachment sheet.

[0008] Furthermore, it is preferable that the mounting sheet is sewn along both short edge sides of the main body at the mounting position on the main body, and further has a portion sewn to the main body from the start and end of both edges toward the perforation, up to the perforation or just before it.

[0009] It is preferable that a central portion located inside both side edges of the lower surface of the auxiliary pad is glued or sewn to a portion inside the two perforations of the mounting sheet.

[0010] It is preferable that the bottom surface of the auxiliary pad is treated to prevent liquid leakage. Effect of the Invention

[0011] According to the present invention, the auxiliary pad is attached to the main body of the liquid-absorbent sheet via the attachment sheet. The mounting sheet is secured to the mounting position so that it does not easily shift out of position. It can be removed with light force along the notch, so it won't come off from your underwear when you remove it. This has the effect of reducing the risk of Furthermore, the mounting sheet left after the auxiliary pad is removed is attached in a [ and ] shape, which does not droop (turn up) downward during use and creates a side-leakage prevention pocket that prevents liquid from seeping out. [Brief description of the drawings]

[0012] [Figure 1] FIG. 1 is a perspective view of a sanitary napkin provided with an auxiliary napkin according to an embodiment of a liquid-absorbent sheet provided with an auxiliary pad of the present invention. [Diagram 2] FIG. 2 is an exploded perspective view showing the configuration of a sanitary napkin. [Diagram 3] 1 shows (a) the napkin body, (b) the attachment sheet, and (c) the auxiliary napkin of a sanitary napkin. [Figure 4] (a) of the sanitary napkin shows the state in which the attachment sheet is attached onto the napkin body, and (b) the adhesive surface on the bottom surface of the auxiliary napkin is shown shaded. [Diagram 5] This shows the state in which an auxiliary napkin is attached and fixed onto the attachment sheet on the napkin body shown in Figure 4. [Figure 6] 11 is a perspective view showing the auxiliary napkin attached to the napkin body being peeled off along the perforations of the attachment sheet; FIG. [Figure 7] FIG. 2 is a perspective view of the sanitary napkin after the auxiliary napkin has been removed. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] The liquid-absorbent sheet with the auxiliary pad of the present invention is composed of a substantially rectangular sheet-like main body, an attachment sheet, and an auxiliary pad. The attachment sheet is attached to the main body along both edges in the short direction of the main body at the attachment position, and two perforations (meaning that dashed cuts are made, the same below) for cutting are provided inside both edges. Furthermore, the attachment sheet has a portion attached to the main body from the start and end of both edges toward the proximal perforation to the perforation or just before it. The central portion located inside both edges of the lower surface of the auxiliary pad is attached to the part inside the two perforations of the attachment sheet. By adopting this configuration, the auxiliary pad is prevented from shifting in position during use and can be easily peeled off along the perforations. Furthermore, after the auxiliary pad is peeled off, the attachment sheet left on the main body forms a leakage prevention pocket in the main body to prevent lateral leakage of menstrual blood, urine, etc.

[0014] A sanitary napkin 1 with an auxiliary napkin according to an embodiment of the liquid-absorbent sheet with an auxiliary pad of the present invention will be described with reference to the attached drawings. The roughly rectangular sheet-like main body, attachment sheet, and auxiliary pad of the liquid-absorbent sheet with an auxiliary pad of the present invention correspond to the napkin main body 2, attachment sheet 4, and auxiliary pad 3 of the sanitary napkin 1 with an auxiliary napkin, respectively. In addition, the liquid absorbed by the liquid-absorbent sheet in the case of the sanitary napkin 1 corresponds to menstrual blood.

[0015] FIG. 1 is a perspective view of a sanitary napkin 1, particularly showing the sanitary napkin folded in the direction expected for use. The sanitary napkin 1 is a roughly rectangular sheet-like product manufactured using absorbent sheet materials such as natural materials such as cotton, or cotton-like pulp using chemical fibers, polymer absorbent materials, and nonwoven fabrics. The term "sheet material" refers to a material that is relatively small and thin, such as paper or board, in the thickness direction compared to the flat portion. The sanitary napkin 1 is composed of a roughly rectangular sheet-like napkin body 2 and an auxiliary napkin 3 attached to the napkin body 2 via an attachment sheet 4. The non-skin side of the napkin body 2, i.e., the bottom surface in this figure, has an adhesive surface (not shown) for attaching the napkin to underwear, and further has wing-like parts 2a and 2b for wrapping the napkin around the underwear and fixing it firmly. Whether or not the wing-like parts 2a and 2b are provided is an optional matter. The bottom surface of the napkin body 2 is attached with the thin leakproof resin sheet having the adhesive surface, to prevent menstrual blood from leaking into underwear.

[0016] The auxiliary napkin 3 has leakage prevention pockets 3a, 3b (also called leakage prevention gathers due to their appearance, but cannot be turned over to the other side because they are pocket-shaped) on both sides of the edge of the auxiliary napkin 3 to prevent side leakage of menstrual blood. The leakage prevention pockets 3a, 3b are pocket-shaped structures made of rectangular nonwoven fabric, preferably a sheet material that does not allow menstrual blood to seep out and leak, attached to the main body of the auxiliary napkin 3 by sewing, bonding, welding, or the like to the edge parts on both sides of the auxiliary napkin and the linear parts extending from the start and end of the edges toward the inside of the auxiliary napkin. As shown in Fig. 1, the sanitary napkin 1 is used in a state where it is bent toward the non-skin side (the side where the crotch part of the underwear is located) during use, and as a result, menstrual blood that flows to the side is prevented from leaking by the leakage prevention pockets 3a, 3b.

[0017] 2 is an exploded perspective view showing the structure of a substantially rectangular sheet-like sanitary napkin 1. The longitudinal and lateral directions of the napkin body 2 of the sanitary napkin 1 are shown in the figure. In this specification, the "edges" of the sanitary napkin 1, napkin body 2, auxiliary napkin 3, and attachment sheet 4 refer to straight edges or their vicinity on both sides in the lateral direction of the sanitary napkin 1 and extending in the longitudinal direction. Even when the wing-shaped portions 2a, 2b are provided, the "edges" refer to straight edges on both sides in the lateral direction of the sanitary napkin 1 and extending in the longitudinal direction when the sanitary napkin 1 does not have the wing-shaped portions 2a, 2b.

[0018] The sanitary napkin 1 is manufactured by attaching both side edges of an attachment sheet 4 onto a napkin body 2, and then adhering and fixing an adhesive surface 3c provided in a central portion located inside both side edges of the bottom of an auxiliary napkin 3 to the central portion of the attachment sheet 4. A thin resin sheet having an adhesive surface 3c (see FIG. 4(b)) is attached to the central portion of the bottom of the auxiliary napkin 3, located inside both side edges, to prevent menstrual blood from leaking into the napkin body 2.

[0019] The napkin body 2 may be provided with a member (not shown) inside both edges of the napkin body 2 that stands up to prevent leakage (also called three-dimensional gathers due to their appearance, but which can be turned outward depending on the state of use). These three-dimensional gathers function to prevent side leakage in the front and back parts of the napkin body 2 that are not covered by the auxiliary napkin 3. Furthermore, after the auxiliary napkin 3 is removed, the parts 4a, 4c of the attachment sheet 4 that remain on the napkin body 2 function as new leakage prevention pockets that are not soiled by previous use (see Figure 7), and the three-dimensional gathers function as an auxiliary function to prevent side leakage.

[0020] The attachment sheet 4 is made of, for example, natural materials such as cotton or nonwoven fabric, but is preferably made of a sheet material that does not allow menstrual blood to seep out or leak. Two perforations 4d, 4e are provided at a specified distance from both edges of the attachment sheet 4 for cutting. Of the three parts 4a, 4b, 4c divided by the two perforations 4d, 4e, the adhesive surface 3c of the auxiliary napkin 3 is attached and fixed to the central part 4b. By providing the adhesive surface 3c in the central part located inside both edges of the bottom surface of the auxiliary napkin 3, the auxiliary napkin 3 covers the central part 4b of the attachment sheet 4, preventing menstrual blood from adhering to the napkin body 2.

[0021] FIG. 3 shows a front view of (a) the napkin body 2, (b) the attachment sheet 4, and (c) the auxiliary napkin 3 of the sanitary napkin 1. The napkin body 2 is, for example, 3-5 mm thick, has a longitudinal length L1=260 mm, a transverse length L2=80 mm, and the wing-shaped portions 2a and 2b protrude laterally by, for example, L3=30 mm. The attachment sheet 4 is, for example, 0.2 mm thick, has a longitudinal length L4=100 mm, a transverse length L5=90 mm, and has perforations 4d and 4e at a width W1=10 mm. The auxiliary napkin 3 is, for example, 3-5 mm thick, has a longitudinal length L6=100 mm, a transverse length L7=90 mm, and has leakage prevention pockets 3a and 3b at both side edges, each having a length L6=100 mm and a width W2=12 mm.

[0022] The short-side length L7 of the auxiliary napkin 3 is preferably a length that completely covers the perforations 4d, 4e of the attachment sheet 4. By adopting this configuration, menstrual blood is prevented from adhering to the perforations 4d, 4e and becoming easily peeled off when the auxiliary napkin 3 is in use. Furthermore, the short-side length L7 of the auxiliary napkin 3 may be greater than the short-side length L5 of the attachment sheet 4. By adopting this configuration, it is possible to more effectively prevent menstrual blood from adhering to the napkin body 2 when the auxiliary napkin 3 is in use.

[0023] Also, a seam, as shown by dotted line 3d, may be added to the upper portion of auxiliary napkin 3 to prevent menstrual blood from reaching the inside and to serve as a part to be held when removing the napkin.

[0024] FIG. 4(a) shows the state where the attachment sheet 4 is attached in a line shape indicated by the dotted lines 5a and 5b on the napkin body 2 shown in FIG. 3. The attachment position of the attachment sheet 4 is generally a little forward of the middle position of the napkin body 2, i.e., a little upward in the figure. The attachment sheet 4 is attached along both side edges (P1 to P2, P5 to P6) of the napkin body 2 at the attachment position. In this example, it is sewn from P1 to P2 and from P5 to P6. Furthermore, the attachment sheet 4 is attached in a line shape to the napkin body from the start and end of both side edges (P1, P2, P5, P6) of the napkin body 2 toward the proximal perforations 4d and 4e to or just before the perforations. In this example, the edges are sewn in a line from the beginning P1 of the edge to P3 near the perforation, from the end P2 of the edge to P4 near the perforation, from the beginning P5 of the edge to P7 near the perforation, and from the end P6 of the edge to P8 near the perforation. Hereinafter, the linearly attached parts shown by the dotted lines 5a and 5b are referred to as the parts attached in a ] or [ shape.

[0025] In addition, as long as the condition that a pocket-shaped structure is formed by sewing P1 to P2, P1 to P3, P2 to P4, P5 to P6, P5 to P7, and P6 to P8 in a line is satisfied, for example, instead of sewing P1 to P3 and P2 to P4, only P3 and P4 may be sewn together, and similarly, instead of sewing P5 to P7 and P6 to P8, only P7 and P8 may be sewn together. Also, the embodiment of "sewing in a line" includes, in detail, an embodiment in which sewing is performed by sewing with a zigzag, curved line, mark, or other figure. Numerous sewing methods are possible within the scope of the invention.

[0026] 4(b) shows, in a shaded manner, the adhesive surface 3c provided on the underside of the auxiliary napkin 3 excluding both side edges, i.e., on the center portion located inside both side edges, in this embodiment, inside the leakage prevention pockets 3a, 3b. The adhesive surface 3c is smaller than the center portion 4b of the attachment sheet 4. If a seam, indicated by dotted line 3d, is added to the upper portion of the auxiliary napkin 3 to prevent menstrual blood from reaching the inside and to serve as the portion to be pinched when removing the auxiliary napkin, the attachment sheet 4 will also be pinched, allowing it to be peeled off more reliably.

[0027] Fig. 5 shows the state in which the adhesive surface 3c (shaded area) of the auxiliary napkin 3 has been attached and fixed to the central portion 4b of the attachment sheet 4 attached to the napkin body 2 shown in Fig. 4(a). Through this process, the sanitary napkin 1 is completed.

[0028] 6 is a perspective view showing the state when the auxiliary napkin 3 is peeled off from the sanitary napkin 1. After the auxiliary napkin 3 is used while attached to the sanitary napkin 1, it is peeled off from the napkin body 2. Since the auxiliary napkin 3 is attached to the attachment sheet 4, the attachment sheet 4 is also peeled off together with the auxiliary napkin 3. The force required for this peeling is much weaker than the adhesive force of the adhesive portion where the auxiliary napkin 3 is attached to the attachment sheet 4. At this time, the central portion 4b of the attachment sheet 4 is peeled off at perforations 4d and 4e provided in the attachment sheet 4, and portions 4a and 4c located near the both edges are left on the napkin body 2.

[0029] Fig. 7 is a perspective view showing the napkin body 2 after the auxiliary napkin 3 has been torn off, and shows the state in which it is folded in the direction expected for use. As shown in Fig. 4(a), the portions 4a located near the edges on both sides of the attachment sheet 4 are attached in a ]-shape, and the portions 4c are attached in a [-shape, and the remaining portions 4a and 4c do not hang down (turn up) during use, but each function as a pocket to prevent leakage of menstrual blood. In other words, when the auxiliary napkin 3 is attached to the sanitary napkin 1, leakage of menstrual blood is prevented by the action of the leakage prevention pockets 3a and 3b, and even after the auxiliary napkin 3 is removed, the remaining portions 4a and 4c of the attachment sheet 4 function as new leakage prevention pockets that are not soiled by previous use, preventing leakage of menstrual blood.

[0030] As described above, the sanitary napkin 1 has the auxiliary napkin 3 firmly fixed to the napkin body 2, which eliminates the risk of the auxiliary napkin 3 shifting position during use. At the same time, it can be peeled off with a weak force along the perforations 4d, 4e provided in the attachment sheet 4. This not only prevents the surface of the napkin body 2 from being damaged when the auxiliary napkin 3 is peeled off, but also prevents the sanitary napkin 1 from peeling off from the underwear. Another excellent advantage is that the remaining part of the attachment sheet 4 functions as a pocket for preventing menstrual blood leakage in the napkin body 2 after the auxiliary napkin 3 is removed. This fact allows the sanitary napkin 1 to be used for a long time with peace of mind on days when the amount of menstrual blood is heavy.

[0031] The sanitary napkin 1 can be used safely for approximately twice as long by simply removing the auxiliary napkin 3. In other words, by putting on the sanitary napkin 1 once, the frequency of changing the entire sanitary napkin 1 can be halved, which reduces the hassle of taking the napkin to the toilet and changing it, which may be necessary in some situations and may not be seen by others.

[0032] The present invention is not limited to the configurations of the above-mentioned various embodiments, and various modifications are possible within the scope of the invention. For example, the attachment sheet 4 that is placed on the napkin 2 body and sewn thereto may be heat-sealed in a line shape.

[0033] The substantially rectangular sheet-like napkin body 2 may have largely rounded corners as shown in the figure, or conversely, may have a shape closer to a rectangle. Also, the width in the short direction may be shaped at the midpoint in the longitudinal direction of the substantially rectangular sheet-like napkin itself 2. In this case, the "edges" on both sides in the short direction of the sanitary napkin 1, napkin body 2, auxiliary napkin 3, and attachment sheet 4 refer to edges shaped to follow this shape.

[0034] The auxiliary napkin 3 may also be attached by sewing to the central portion 4c of the attachment sheet 4. Specifically, the auxiliary napkin 3 may be sewn to the attachment sheet 4 along the rectangular outline of the adhesive surface 3c shown with a cross-hatching. In this case, the auxiliary napkin 3 may be attached onto the attachment sheet 4 before the attachment sheet 4 is attached to the napkin body 2. [Industrial Applicability]

[0035] The liquid-absorbent sheet with auxiliary pad of the present invention can be used as a sanitary napkin with auxiliary napkin, as well as a sheet for preventing urine leakage with auxiliary pad. Even in this case, the configuration of the main body, attachment sheet, and auxiliary pad is the same. In the case of a sheet for preventing urine leakage, the liquid absorbed by the liquid-absorbent sheet corresponds to urine. [Explanation of symbols]

[0036] 1. Sanitary napkin with auxiliary napkin (corresponding to the liquid-absorbent sheet with auxiliary pad of the present invention) 2. Napkin body (corresponding to the roughly rectangular sheet-shaped body) 3. Supplementary napkins (equivalent to supplementary pads) 4 Installation sheet (equivalent to the installation sheet) 4d, 4e Perforated cuts 5a [Dotted line showing the mounting part of the mounting sheet 5b] Dotted line showing the mounting part of the mounting sheet

Claims

1. a mounting sheet (4) made of a sheet material having a property of not allowing liquid to seep out and leak and a liquid-absorbent auxiliary pad (3) having a length shorter than that of the main body; the mounting sheet (4) is attached along both edges of the main body in the short direction at an attachment position forward of the longitudinal midpoint of the main body, and has two perforations (4d, 4e) for cutting on the inside of both edges, and further has a portion attached to the main body from the start and end of both edges toward the proximal perforation or just before the perforation, and a central portion (3c) of the underside of the auxiliary pad, located inside both edges, is attached to a portion (4d) of the mounting sheet on the inside of the two perforations.

2. A liquid-absorbent sheet with an auxiliary pad as described in claim 1, characterized in that the attachment sheet is sewn along both edges of the short side of the main body at the attachment position to the main body, and further has portions sewn to the main body from the start and end of both edges toward the perforation, up to the perforation or just before it.

3. A liquid-absorbent sheet having an auxiliary pad as described in claim 1 or claim 2, characterized in that the central portion of the underside of the auxiliary pad, excluding both side edges, is glued or sewn to the part inside the two perforations of the mounting sheet.

4. 3. The liquid-absorbent sheet having an auxiliary pad according to claim 1, wherein a bottom surface of the auxiliary pad is treated to prevent liquid leakage.

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