absorbent pad
The absorbent pad's innovative design with a divided core and securing tape addresses liquid leakage and disposal issues by ensuring secure folding and attachment, enhancing usability and hygiene.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- UNI CHARM CORP
- Filing Date
- 2024-12-26
- Publication Date
- 2026-07-08
AI Technical Summary
Existing absorbent articles face challenges in managing liquid leakage and ease of disposal when absorbing large amounts of excrement, particularly due to swelling that complicates rolling and folding.
An absorbent pad design with a liquid-absorbent core divided into two regions by a fold line, using a fixing tape that attaches to both regions to secure the pad in a folded state, minimizing creases and preventing liquid leakage.
The design allows for easy, hygienic disposal and secure attachment to disposable diapers, reducing the likelihood of liquid leakage and improving fit and safety during use.
Smart Images
Figure 2026114751000001_ABST
Abstract
Description
Technical Field
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[0001] The present invention relates to an absorbent pad.
Background Art
[0002] Patent Document 1 discloses an absorbent article provided with a tape member for post-treatment.
Prior Art Document
Patent Document
[0003]
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0004] In Patent Document 1, the main body of the absorbent article is formed into a rolled state and fixed with a tape member. However, when the absorbent article absorbs a large amount of excrement, the swelling in the thickness direction increases, so it may be difficult to roll it up from the end.
[0005] [ This embodiment has been made in view of the above problems, and the object is to provide an absorbent pad capable of performing post-treatment of the pad while suppressing liquid leakage.
Means for Solving the Problems
[0006] The main invention for achieving the above object is a pad-shaped main body having a liquid-absorbent absorbent core and partitioned into a first region and a second region by a folding line portion for folding in half, a fixed tape having one end fixed to the first region and the other end being a movable end movable with respect to the main body, and The absorbent pad is characterized in that, when the main body is folded in half along the fold line, the fixing tape is configured to be able to attach the movable end to the second region while straddling the outer edge of the first region and the outer edge of the second region. Other features of the present invention will be made clearer by description in this specification and the accompanying drawings. [Effects of the Invention]
[0007] According to the present invention, it is possible to provide an absorbent pad that can be processed after use while suppressing liquid leakage. [Brief explanation of the drawing]
[0008] [Figure 1] This is a schematic plan view of the urine absorption pad 1 in this embodiment of the present invention, as seen from the non-skin side when unfolded and extended. [Figure 2] This is a schematic cross-sectional view of the urine absorption pad 1. [Figure 3] This is an explanatory diagram of pad 1 (main body 100) when folded in half. [Figure 4] This is an explanatory diagram of fixing tape 40 and its modified form. [Figure 5] This diagram illustrates the configuration of the pad 1 with the fixing tape 40 applied to the main body 100. [Figure 6] This is an explanatory diagram of a modified example of this embodiment. [Figure 7] This diagram illustrates another modification of this embodiment. [Figure 8] This is an explanatory diagram showing the case where the locking portion is an adhesive portion 20' that has adhesive properties. [Figure 9] This is an explanatory diagram of the fixing tape side joint 45 and the locking member side joint 20. [Figure 10] This is an explanatory diagram showing the case where the locking portion is made of a self-adhesive adhesive 30. [Modes for carrying out the invention]
[0009] The following matters at least will become clear from the description of this specification and the attached drawings. (Aspect 1) A pad-shaped main body having a liquid-absorbent absorbent core and partitioned into a first region and a second region by a fold line portion for folding in two, A fixed tape having one end as a fixed end fixed to the first region and the other end as a movable end movable with respect to the main body, Comprising In a state where the main body is folded in two by the fold line portion, the fixed tape is configured to be able to attach the movable end to the second region while straddling the outer edge of the first region and the outer edge of the second region.
[0010] According to Aspect 1, since the pad is folded in two, it is difficult for creases to be formed in the absorbent core compared to the case of folding three or more times, etc., and it is difficult for the water absorption and the wearing property to deteriorate. Also, when discarding after use, the pad 1 can be closed with one hand without using both hands, and since there is a low possibility of touching the skin side, it is easy to perform the operation of closing with the skin side inside hygienically. And after closing the skin side, it can be firmly fixed by the fixed tape, so it becomes difficult for the skin side with excrement attached to open, and the pad can be discarded hygienically.
[0011] (Aspect 2) The absorbent pad according to Aspect 1, wherein The main body has a locking portion for locking to the skin side of a disposable diaper.
[0012] According to Aspect 2, when attaching and using on the skin side of a disposable diaper, by locking the pad through the locking portion, displacement is unlikely to occur. That is, since the pad attached to the disposable diaper is unlikely to shift, the fitness for the user is improved, and leakage of excreted liquid from the pad and the diaper can be suppressed.
[0013] (Aspect 3) The absorbent pad according to Aspects 1 to 2, wherein The fixed tape is configured to be able to cover at least a part of the locking portion when the moving end is attached to the second region while straddling the outer edge of the first region and the outer edge of the second region.
[0014] According to Aspect 3, since a part of the locking portion is covered by the fixed tape, it becomes difficult for a part of the locking portion to come into contact with the user's skin or the like, so safety and operability are improved. Further, since the fixed tape and the locking portion are integrated, it is possible to suppress the opening in the width direction of the pad when discarding.
[0015] (Aspect 4) The absorbent pad according to any one of Aspects 1 to 3, The fixed end is disposed closer to the fold line portion than the locking portion provided in the first region, The fixed tape is configured to be able to cover at least a part of the locking portion provided in the first region.
[0016] According to Aspect 4, since at least a part of the locking portion is covered by the fixed tape in the first region, the safety and operability in the first region are improved.
[0017] (Aspect 5) The absorbent pad according to any one of Aspects 1 to 4, The locking portion has a hook element.
[0018] According to Aspect 5, even if the operation of attaching the absorbent pad to the skin side surface of the disposable diaper is repeatedly performed, the locking portion is hardly deteriorated, so the adjustment of the attachment position is easy and it can be firmly locked.
[0019] (Aspect 6) The absorbent pad according to any one of Aspects 1 to 5, The locking portion has adhesiveness.
[0020] According to Aspect 6, when performing the operation of attaching the absorbent pad to the skin side surface of the disposable diaper, even if the user's finger or the like touches the locking portion, since the rigidity of the locking portion (adhesive) is low, it is difficult to hurt the finger.
[0021] (Aspect 7) An absorbent pad according to any of the aspects of Aspect 6, The movable end is configured to be attachable to the locking portion provided in the second region.
[0022] According to embodiment 7, even if the fixing tape itself does not have a bonding means (for example, an adhesive surface), the fixing tape can be fixed to the locking portion provided in the second region.
[0023] (Aspect 8) An absorbent pad according to any one of aspects 1 to 7, The fixing tape is configured to span across the outer edges of the first region and the second region in the longitudinal direction of the main body.
[0024] According to embodiment 8, when the absorbent pad is folded in half lengthwise along the fold line, the fixing tape straddles the edge (outer edge) furthest from the fold line, making it difficult for the skin-facing side of the pad to open, and allowing the pad to be disposed of hygienically.
[0025] (Aspect 9) An absorbent pad according to any of aspects 1 to 8, The fixing tape is configured to span across the outer edges of the first region and the second region in the width direction of the main body.
[0026] According to embodiment 9, when the absorbent pad is folded in half lengthwise along the fold line, the fixing tape straddles the outer edge (outer edge) in the width direction. This makes it easier to suppress lateral leakage of excrement to the outside in the width direction, and allows the pad to be disposed of hygienically.
[0027] (Aspect 10) An absorbent pad as described in Aspects 1 to 9, The pair of fixing tapes are arranged symmetrically in the width direction of the main body.
[0028] According to embodiment 10, when the absorbent pad is folded in half lengthwise along the fold line, the fixing tape straddles both outer edges in the width direction. This makes it less likely for the skin-facing side of the pad to open, and also helps to suppress leakage of excrement outwards in the width direction (lateral leakage), allowing the pad to be disposed of hygienically.
[0029] (Aspect 11) An absorbent pad according to any one of aspects 1 to 10, Self-adhesive adhesives are provided at the movable end of the fixing tape and at the second region of the main body, When the main body is folded in half along the fold line, the self-adhesive adhesive provided on the fixing tape and the self-adhesive adhesive provided in the second region can be joined to each other.
[0030] According to embodiment 11, since the self-adhesive adhesive has very weak bonding force to other materials (such as clothing), even if the adhesive comes into contact with the user's hands or clothing during the process of folding the absorbent pad in half and securing it with fixing tape, it is less likely to stick, improving ease of use. Conversely, because the bonding force between self-adhesive adhesives is strong, if you fold the pad in half and secure it with fixing tape (securing it with self-adhesive adhesives), the pad is more likely to stay closed.
[0031] ===Implementation Method=== As an example of an absorbent article according to this embodiment, an absorbent pad (urine pad, hereinafter sometimes simply referred to as "pad") will be described. However, the absorbent article according to this embodiment is not limited to a urine pad, and can also be applied to, for example, sanitary napkins, disposable panty-type diapers, shorts-type sanitary napkins, disposable tape-type diapers, pet diapers, absorbent sheets for nursing care or pets, etc.
[0032] <<<Basic configuration of urine absorption pad 1>>> First, let's explain the basic structure of the urine absorption pad 1. Figure 1 is a schematic plan view of the pad 1 in its unfolded and extended state, seen from the non-skin side. Figure 2 is a schematic cross-sectional view of the pad 1. The urine absorption pad 1 can be used by placing it inside a pant-type or tape-type disposable diaper, or it can be used as a standalone pad by placing it directly inside the wearer's underwear (pants or shorts).
[0033] Pad 1 comprises a main body 100 and a fixing tape 40.
[0034] The main body 100 is a component (base material) that constitutes the main body of the absorbent pad 1. When unfolded, the main body 100 has a substantially rectangular planar shape and has mutually perpendicular longitudinal, width, and thickness directions. The longitudinal direction follows the front-to-back direction from the wearer's abdominal side to the back side when the main body 100 is worn. In the thickness direction, the side that contacts the wearer's skin is called the skin side, and the opposite side is called the non-skin side. Since the main body 100 of this embodiment has a symmetrical configuration in the longitudinal direction, either side of the main body 100 in the longitudinal direction may correspond to the wearer's abdominal side. Also, unlike tape-type or pant-type diapers, the main body 100 of the absorbent pad 1 is worn without one end and the other end in the longitudinal direction being connected along the wearer's waist.
[0035] The unfolded state of the main body 100 refers to the state in which the entire main body 100 is unfolded flat. The extended state of the main body 100 refers to the state in which the main body 100 is extended to the point in which wrinkles that were present on the main body 100 are virtually invisible, and the main body 100 is extended until the dimensions of each component constituting the main body 100 (for example, the side sheet 4 described later) match or are close to the dimensions of the individual component.
[0036] The main body 100 comprises a liquid-absorbing absorbent core 10, a liquid-permeable surface sheet 2 (hereinafter sometimes referred to as top sheet 2) (e.g., nonwoven fabric) provided on the skin side of the absorbent core 10, a liquid-impermeable back sheet 3 (e.g., a resin film such as polyethylene or polypropylene) provided on the non-skin side of the absorbent core 10, and a pair of side sheets 4 provided on both sides of the main body 100 in the width direction. As shown in Figure 2, the pair of side sheets 4 are folded inward in the width direction from the width direction side of the non-skin side of the back sheet 3 toward the skin side of the skin side sheet 2 so as to wrap the absorbent core 10.
[0037] An example of the absorbent core 10 is a liquid-absorbing fiber, such as pulp fiber containing SAP (superabsorbent polymer), molded into a predetermined shape. The absorbent core 10 is covered with a liquid-permeable core wrap sheet 11 (e.g., tissue). However, the absorbent core 10 is not limited to the above, and may be an SAP sheet in which an SAP layer is attached to a hydrophilic sheet, or an airlaid sheet in which liquid-absorbing fibers are molded into a sheet by the airlaid method, or it may be a configuration of two or more layers. Furthermore, the absorbent core 10 does not have to be covered with the core wrap sheet 11.
[0038] Furthermore, a fixing member 20 is provided on the non-skin side of the main body 100, which serves as a locking part that can secure the pad 1 to the skin side (inner side) of a pant-type diaper, underwear (outer garment), or disposable diaper. In Figure 1, for example, fixing members 20 are provided at both ends in the longitudinal direction of the main body 100. The fixing member 20 is, for example, a rectangular member, and its long side is provided so as to be aligned with the width direction of the main body 100. The fixing member 20 is preferably a member that can be peeled off from the inner side of the outer garment without damaging the outer garment and can be reattached. As the fixing member 20 in this embodiment, for example, a tape with a hook element (for example, the male part of a hook-and-loop fastener) can be applied.
[0039] In addition to the fixing member 20 being a hook material, the fixing member 20 as a locking part can also be, for example, an adhesive part 20' to which an adhesive (such as HMA) has been applied. The adhesive part 20' will be described later as a modification of this embodiment. In this embodiment, the fixing member 20 is provided at both ends in the longitudinal direction of the main body 100, but is not limited to that, and may be provided at either one in the longitudinal direction, as shown in the modification described later.
[0040] Furthermore, the main body 100 has a pair of leg-circumference elastic members 5 provided along the longitudinal direction on both sides in the width direction. In Figure 2, the leg-circumference elastic members 5 are fixed in an extended state in the longitudinal direction between the back sheet 3 and the side sheet 4. This makes it easier for both sides of the main body 100 in the width direction to conform closely to the wearer's legs.
[0041] Furthermore, the main body 100 has a pair of leak-proof wall portions 6 on both sides in the width direction that can be erected on the skin side. Each leak-proof wall portion 6 consists of a side sheet 4 and a leak-proof elastic member 7. The leak-proof elastic member 7 is fixed to the inner end of the side sheet 4 in the width direction in an extended state along the longitudinal direction of the main body 100. When the main body 100 is worn, the tip of the leak-proof wall portion 6 stands up on the skin side based on the elasticity of the leak-proof elastic member 7, and the lateral leakage of excretory fluids, etc., is suppressed by the erected leak-proof wall portion 6.
[0042] Next, Figure 3 shows the state when pad 1 (main body 100) is folded in half along its longitudinal direction. The folded state means that the main body 100 is folded in half along its center line CL (hereinafter also referred to as the fold line FL) in the longitudinal direction. This state is, for example, the state of pad 1 before use or the state when it is disposed of after use.
[0043] Figure 3A is a plan view of the main body 100 when folded in half lengthwise, and shows how it is attached to a disposable diaper 50. Figure 3B is a schematic cross-sectional view of the main body 100 when folded in half with the ends closed and viewed from the width direction. When folded in half lengthwise, the main body 100 is divided into two regions by the fold line FL. In the following description, one of the two regions divided by the fold line FL will be referred to as the first region A1 and the other as the second region A2. Of the two regions divided by the fold line FL, the region where the fixing tape 40 described later is provided will be referred to as the first region A1, and the other as the second region A2.
[0044] Furthermore, when the main body 100 is folded in half, the skin-side of the main body 100 becomes the inside, and the non-skin-side of the main body 100 becomes the outside. Moreover, when the main body 100 is folded in half, the skin-side of the first region A1 and the skin-side of the second region A2 face each other and overlap, and the outer edge A10 of the first region A1 and the outer edge A20 of the second region A2 almost overlap. Here, the outer edge A10 of the first region A1 is the edge that constitutes the outer circumference in the longitudinal and width directions of the first region A1, excluding the fold line FL, when viewed from the thickness direction in the unfolded state of the main body 100, and the outer edge A20 of the second region A2 is the edge that constitutes the outer circumference in the longitudinal and width directions of the second region A2, excluding the fold line FL, when viewed from the thickness direction in the unfolded state of the main body 100. Furthermore, as shown in Figure 1, of the outer edge A10 of the first region A1, the outer edge in the longitudinal direction is designated as A11, and the outer edge in the width direction is designated as A12. Similarly, of the outer edge A20 of the second region A2, the outer edge in the longitudinal direction is designated as A21, and the outer edge in the width direction is designated as A22.
[0045] <<<Fixing Tape 40>>> The fixing tape 40 is a tape-shaped member provided on the non-skin side of the main body 100. The fixing tape 40 is sometimes called a post-processing tape. One end of the fixing tape 40 is fixed to the first region A1 of the main body 100, and the other end is movable relative to the main body 100. In the following description, the end of the fixing tape 40 that is fixed to the main body 100 will be referred to as the fixed end 41, and the other end will be referred to as the movable end 42.
[0046] The fixing tape 40 of this embodiment will now be described in detail. Figure 4 is an explanatory diagram of the fixing tape 40 and a modified example thereof. The fixing tape 40 of this embodiment uses a Z-fold adhesive tape that is divided into three longitudinal sections from the total length of the tape and folded into a so-called Z shape. This Z-fold adhesive tape is shown in Figure 4A. The fixed end 41 of the fixing tape 40 is fixed to the back sheet 3 of the main body 100 at a predetermined position in the first region A1. The movable end 42 of the fixing tape 40 is temporarily fixed to the main body 100 and the fixing tape 40 by an adhesive 43 (hereinafter sometimes referred to as adhesive 43) that has been pre-applied to at least the portion that overlaps in the thickness direction of the main body 100 when folded into a Z shape. In addition, the tip of the movable end 42 has a non-adhesive region d (dry edge) where adhesive 43 is not provided for a predetermined distance d from the tip, so that the user can easily peel off the fixing tape 40 (movable end 42). When performing post-processing, grasp the non-adhesive area d of the movable end 42 and pull to peel off the temporarily fixed portion (the portion to which adhesive 43 is applied). In this way, the movable end 42 is released from temporary fixing, and only the fixed end 41 of the total length of the fixing tape 40 is fixed to the main body 100. Thus, the movable end 42 becomes movable relative to the main body 100 (see Figure 4A, right). However, the movable end 42 of the fixing tape 40 is not limited to the configuration in which it is temporarily fixed as described above.
[0047] The fixing tape 40 is not limited to a Z-fold adhesive tape, and may be configured such that the tape member stretches like an elastic member, as shown in the examples in Figures 4B and 4C. In that case, the fixing tape 40 before stretching is fixed to the back sheet 3 of the main body 100 with adhesive 43 or the like. Also, in the example in Figure 4B, the direction of stretching is upward on the drawing plane, but it is not limited to this, and may be downward on the drawing plane, as shown in the example in Figure 4C. In the case of Figure 4C, the movable end 42 is folded back so that it overlaps with the fixed end 41 in the thickness direction of the main body 100, and then stretched.
[0048] In addition, the movable end 42 shown in Figures 4B and 4C is provided with adhesive 43 to keep the main body 100 folded in half and maintain its state, but this is not the only option, and as will be described later, it is not necessary to provide adhesive 43 to the movable end 42. Then, during post-processing, similar to the case of Z-fold adhesive tape, the user can grasp the non-adhesive area d at the movable end 42 and pull the fixing tape 40 in the direction in which they want to stretch it, thereby stretching it.
[0049] Next, the specific form of the absorbent pad 1 will be described. Note that the configuration of pad 1 described below is just one example, and pad 1 is not limited to the configuration described below. Figure 5 is a diagram illustrating the configuration of pad 1 with fixing tape 40 applied to the main body 100. Figure 5A is a schematic plan view of pad 1 as seen from the non-skin side, and Figure 5B is a schematic cross-sectional view when the central portion in the width direction of pad 1 is cut in the thickness direction. As shown in Figure 5B, in order to hold the main body 100 in a folded state with fixing tape 40, the fixing tape 40 is configured so that its movable end 42 can be attached to the second region A2 while straddling the outer edge A10 of the first region A1 and the outer edge A20 of the second region A2. That is, the movable end 42 of the fixing tape 40 and the second region A2 can be attached to each other. Furthermore, the fixing tape 40 has a length necessary for the movable end 42 to reach the second region A2 (the part of the second region A2 to which the movable end 42 is attached) while straddling the outer edge A10 of the first region A1 and the outer edge A20 of the second region A2.
[0050] Furthermore, as shown in Figures 5A and 5B, the fixing tape 40 is configured to straddle the outer edge A11 of the first region A1 and the outer edge A21 of the second region A2 in the longitudinal direction of the main body 100. In other words, from the fixed end 41 to the movable end 42 of the fixing tape 40, it straddles the end furthest from the fold line FL of the main body 100.
[0051] Furthermore, the main body 100 has a fixing member 20 that serves as a locking part for engaging with the skin side of the disposable diaper 50. As shown in Figures 1 and 5, the fixing member 20 is provided at symmetrical positions in the longitudinal direction of the main body 100.
[0052] Furthermore, the fixing tape 40 is configured to cover at least a portion of the fixing member 20 when its movable end 41 is attached to the second region A2, while straddling the outer edge A10 of the first region A1 and the outer edge A20 of the second region A2. Specifically, as shown in Figures 5A and 5B, the movable end 42 of the fixing tape 40 provided in the first region A1 is attached to the second region A2 while straddling both outer edges (A10, A20). At this time, the fixing tape 40 straddles the fixing member 20 so as to cover at least a portion of the fixing member 20 provided at both ends. In other words, in the thickness direction of the main body 100, the fixing tape 40 covers the fixing member 20 from the outside (non-skin side).
[0053] Furthermore, as shown in Figures 5A and 5B, the fixed end 41 of the fixing tape 40 is positioned closer to the fold line FL than the fixing member 20 provided in the first region A1. The fixing tape 40 is configured to cover at least a portion of the fixing member 20 provided in the first region A1. In other words, by positioning the fixed end 41 of the fixing tape 40 closer to the fold line FL than the fixing member 20 provided in the first region A1, the fixing tape 40 is designed to cover at least a portion of the fixing member 20 provided in the first region A1 when it is attached to the second region A2.
[0054] Next, the operation and effect of the pad 1 of this embodiment will be described. As shown in Figure 5B, during post-processing of the pad 1, with the main body 100 folded in half, the outer edge of the main body 100 is wrapped with the fixing tape 40 (laid over it). Since tape adhesive 43 is applied to the movable end 42 of the fixing tape 40, the movable end 42 can be attached to the second region A2 of the main body 100, thereby holding the main body 100 in a folded state.
[0055] By the way, when the main body 100 is rolled up from one end in the longitudinal direction for post-processing, there is a risk that the liquid absorbed by the main body 100 will be squeezed out. In contrast, by folding the main body 100 in half for post-processing, leakage of liquid can be suppressed compared to when the main body 100 is rolled up. Furthermore, since the main body 100 has a pre-formed fold crease along the fold line FL, it is possible to encourage folding the main body 100 in half during post-processing, and the accidental rolling up of the main body 100 during post-processing can be suppressed. Moreover, compared to when the main body 100 is folded into thirds or more, it is less likely that extra folds will be formed in the absorbent core 10, so the water absorption of the absorbent core 10 and the fit of the pad 1 can be suppressed. And when disposing of it after use, the main body 100 can be closed with one hand without using both hands, and at that time, there is little possibility that the user will touch the skin side, making it easy to close it hygienically with the skin side facing inward. Furthermore, since the skin-side closure can be securely fixed with the fixing tape 40, the skin-side closure where excrement has adhered is less likely to open, allowing for hygienic disposal of the pad 1.
[0056] Furthermore, the fixing tape 40 is configured to straddle the outer edge A11 in the longitudinal direction of the first region A1 and the outer edge A21 in the longitudinal direction of the second region A2 of the main body 100. In this way, when the main body 100 is folded in half longitudinally along the fold line FL, the fixing tape 40 straddles the edge (outer edge) furthest from the fold line FL, making it difficult for the skin-facing side of the main body 100 to open, and allowing the pad 1 to be disposed of hygienically.
[0057] The main body 100 has a fixing member 20 for securing it to the skin side of the disposable diaper 50. When the pad 1 is attached to the skin side of the disposable diaper 50, the main body 100 is secured via the fixing member 20, which reduces the likelihood of misalignment between the disposable diaper 50 and the main body 100 (pad 1). In other words, since the pad 1 attached to the disposable diaper 50 is less likely to shift, the fit for the user is improved, and leakage of excretory fluids from the pad 1 and the diaper 50 can be suppressed.
[0058] Furthermore, since the fixing member 20 has a hook element, the fixing member 20 is less likely to deteriorate even if the operation of attaching the pad 1 to the skin side of the disposable diaper 50 is repeated, making it easy to adjust the attachment position and securely fasten it.
[0059] Furthermore, the fixing tape 40 is configured to straddle the outer edge A10 of the first region A1 and the outer edge A20 of the second region A2, and to cover at least a portion of the fixing member 20 when the movable end 41 is attached to the second region A2. Because at least a portion of the fixing member 20 is covered by the fixing tape 40, a portion of the fixing member 20 is less likely to come into contact with the user's skin or clothing, thereby improving safety and operability. In addition, the fixing members 20 provided at both ends of the main body 100 have hook elements and are therefore more rigid than adhesives or other coatings. As a result, by covering a portion of the fixing member 20 with the fixing tape 40, the fixing tape 40 and the fixing member 20 become integrated. As a result, it is possible to suppress the pad 1 from opening in the width direction when it is disposed of.
[0060] Furthermore, by positioning the fixed end 41 of the fixing tape 40 closer to the fold line FL than the fixing member 20 provided in the first region A1, the fixing tape 40 is designed to cover at least a portion of the fixing member 20 provided in the first region A1 when it is applied to the second region A2. As a result, at least a portion of the fixing member 20 in the first region A1 is covered by the fixing tape 40, improving safety and operability in the first region A1.
[0061] In this embodiment, the fixing members 20 are provided at both ends in the longitudinal direction of the main body 100, but are not limited to this. Figure 6 is an explanatory diagram of a modified example of this embodiment. Figure 6A shows the case where the fixing members 20 are provided only in the first region A1 in the longitudinal direction of the main body 100. Even in this case, when the movable end 41 of the fixing tape 40 is attached to the second region A2, at least a part of the fixing member 20 provided in the first region A1 can be covered. Therefore, the covered part is less likely to come into contact with the user's skin or clothing, thus improving safety and operability in the first region A1.
[0062] In this embodiment, the fixing tape 40 is positioned closer to the fold line FL than the fixing member 20 in the longitudinal direction of the main body 100, but this is not the only configuration. Figure 6B shows the case where the fixing tape 40 is provided on the outside (end side) of the fixing member 20 in the longitudinal direction of the main body 100. In this case, when the movable end 41 of the fixing tape 40 is attached to the second region A2, at least a part of the fixing member 20 provided in the second region A2 is covered by the fixing tape 40. As a result, a part of the fixing member 20 provided in the second region A2 is less likely to come into contact with the user's skin or clothing, thereby improving safety and operability.
[0063] While Figure 5 and other figures illustrate the case where the fixing tape 40 straddles the outer edges A11 and A21 in the longitudinal direction of the main body 100, the invention is not limited to this case. Figure 7 is an explanatory diagram of another modification of this embodiment. In the modification shown in Figure 7A, the fixing tape 40 is configured to straddle the outer edge A12 in the width direction of the first region A1 of the main body 100, and the outer edge A22 in the width direction of the second region A2. In this case, when the main body 100 is folded in half longitudinally along the fold line FL, the fixing tape 40 straddles at least one of the outer edges in the width direction (see Figure 7B). This makes it easier to suppress lateral leakage of excrement to the outside in the width direction, and allows for hygienic disposal of the pad 1.
[0064] Furthermore, it is desirable that the fixing tapes 40 be arranged in pairs symmetrically in the width direction of the main body 100, as shown in Figure 7A. In this case, when the main body 100 is folded in half lengthwise along the fold line FL, the fixing tapes 40 straddle both outer edges in the width direction. This makes it more difficult for the skin-facing side of the main body 100 to open compared to when the fixing tapes 40 are provided on only one side in the width direction, and also makes it easier to suppress leakage of excrement to both outer sides in the width direction (lateral leakage), allowing the pad 1 to be disposed of hygienically.
[0065] In this embodiment, the locking portion has a hook element as a fixing member 20, but is not limited to this, and may also have adhesive properties. In this case, even if the user's (wearer's) fingers or clothing come into contact with the adhesive portion 20' from the time of wearing to disposal, the rigidity of the locking portion (sheet-side adhesive 44) is lower compared to when a hook material is used, making it less likely to injure the fingers or clothing.
[0066] The movable end 42 of the fixing tape 40 may be configured to be attachable to the adhesive portion 20' which serves as a locking portion provided in the second region A2. Figure 8 is an explanatory diagram showing the case where the locking portion is an adhesive portion 20' which has adhesive properties. In the modified example shown in Figure 8, an adhesive sheet adhesive 44 which has adhesive properties is applied to three locations in the width direction of the main body 100 and along the longitudinal direction from one end to the other. In this way, when post-processing the pad 1, the user can grasp the movable end 42 of the fixing tape 40 with the main body 100 folded in half and attach it to the adhesive portion 20' provided in the second region A2 to close it, making it difficult to open the skin side of the main body 100. In addition, although the fixing tape 40 in this embodiment is a Z-fold adhesive tape, in this case an extendable tape as shown in Figures 4B and 4C may be used. Furthermore, since the adhesive portion 20' provided in the second region A2 is coated with sheet adhesive 44, the tape adhesive 43 provided on the movable end 42 of the fixing tape 40 (stretchable tape) can be omitted. In other words, even if the movable end 42 of the fixing tape 40 does not have an adhesive surface or bonding surface, the fixing tape 40 can be fixed to the adhesive portion 20' provided in the second region, thus simplifying the structure of the fixing tape 40.
[0067] Furthermore, the tape adhesive 43 provided on the movable end 42 of the fixing tape 40 and the adhesive portion 20' which serves as a locking portion may each be coated with a self-adhesive adhesive 30 (hereinafter simply referred to as adhesive 30). The specific configuration will be explained below using Figures 9 and 10. Figure 9 is an explanatory diagram of the self-adhesive fixing tape side joint 45 and sheet side joint 46. Figure 10 is an explanatory diagram when the locking portion is composed of a self-adhesive adhesive 30. As shown in Figures 9A and 9B, the fixing tape side joint 45 is provided on the movable end 42 of the fixing tape 40, and the sheet side joint 46 is provided in the second region A2 of the main body 100. The self-adhesive adhesive 30 is applied to the fixing tape side joint 45 and the sheet side joint 46, respectively.
[0068] Here, we will describe the self-adhesive adhesive 30. The adhesive 30 applied to the fixing tape side joint 45 and the sheet side joint 46 respectively has low tackiness (adhesion) of its own, but when the adhesive 30s are brought into contact with each other under relatively weak pressure, adhesive force (hereinafter referred to as bonding force) is exhibited. As shown in Figure 10A, when the fixing tape side joint 45 and the sheet side joint 46 are pressed together, the fixing tape side joint 45 and the sheet side joint 46 stick together (bonding force is exhibited) due to the respective adhesives 30. On the other hand, as shown in Figure 10B, when the adhesive 30 comes into contact with a material other than the adhesive 30, such as the back sheet 3 provided on the pad 1 or skin, the fixing tape side joint 45 does not easily adhere to the material in contact with it.
[0069] The bonding force between the adhesive 30 and the other members is preferably 1 / 4 or less of the bonding force between the adhesive 30s themselves. More preferably, the bonding force between the adhesive 30 and the other members is 1 / 10 or less of the bonding force between the adhesive 30s themselves. Furthermore, when the adhesive 30s are brought into contact with each other, they can be separated without damaging the adhesive 30s, and can be re-bonded by bringing them into contact again after separation. By using the adhesive 30, the bonding means 30 can be made less rigid and more flexible, which can reduce discomfort when wearing the pad 1.
[0070] The adhesive 30 is not particularly limited as long as it is safe to come into contact with the wearer's skin, and examples include emulsion-type self-adhesives (emulsion inks) and hot-melt self-adhesives (HMAs). As the main component of the emulsion-type self-adhesive, it can be used by mixing natural rubber, synthetic rubber, etc. with emulsifiers, etc., and those disclosed in Japanese Patent No. 2589307 and Japanese Patent Application Publication No. 2005-095381 may be used. As the main component of the hot-melt self-adhesive, it can be used by heating and melting thermoplastic resins such as polyolefin-based and polyamide-based resins, for example, as disclosed in Japanese Patent No. 7476348 and Japanese Patent No. 7543716. In this embodiment, an emulsion-type self-adhesive is used.
[0071] When the main body 100 is folded in half along the fold line FL, it is desirable that the self-adhesive adhesive 30 provided on the fixing tape 40 (fixing tape side bonding portion 45) and the self-adhesive adhesive 30 provided on the second region A2 (sheet side bonding portion 46) be able to bond to each other. In this case, since the self-adhesive adhesive 30 has very weak bonding force to other materials (skin, clothing, etc.), even if the adhesive 30 comes into contact with the user's fingers or clothing during the operation of folding the main body 100 in half and fixing it with the fixing tape 40, it is less likely to stick, improving operability. On the other hand, since the bonding force between the self-adhesive adhesives 30 is strong, when the main body 100 is folded in half and fixed with the fixing tape 40 (bonded to each other by the adhesives 30), the pad 1 is more likely to maintain a closed state.
[0072] Furthermore, the sheet-side joint portion 46 provided in the second region A2 of the main body 100 functions as a locking portion for securing the disposable diaper 50 and the pad 1. In this case, a diaper-side locking portion (not shown) to which the adhesive 30 is applied may be provided on the skin-side surface of the disposable diaper 50 (more specifically, near the position where the sheet-side joint portion 46 contacts the pad 1 in the thickness direction when the pad 1 is attached to the disposable diaper 50). Doing so makes it less likely for the attachment position of the disposable diaper 50 and the pad 1 to shift. In other words, since the pad 1 attached to the disposable diaper 50 is less likely to shift, the fit for the user is improved, and leakage of excretory fluids from the pad 1 and the diaper 50 can be suppressed.
[0073] ===Other=== The embodiments described above are provided to facilitate understanding of the present invention and are not intended to limit its interpretation. The present invention may be modified and improved without departing from its spirit, and it goes without saying that equivalents thereof are included. [Explanation of Symbols]
[0074] 1. Urine pads (pads, absorbent items) 2. Surface sheet (top sheet), 3. Back sheet, 4 side seats, 5. Elastic members around the legs, 6 Leak-proof wall section, 7 Leak-proof wall elastic member, 10 absorbent cores, 11 core wrap sheets, 20 Fixing members, 30 Self-adhesive adhesives, 40 Fixing tape (post-processing tape), 41 Fixed end, 42 Moving end, 50 disposable diapers, 100 Main unit (pad unit), A1 1st area, A2 2nd area
Claims
1. A pad-shaped body having a liquid-absorbing core and divided into a first region and a second region by a fold line for folding in half, A fixing tape having one end fixed to the first region and the other end movable relative to the main body, Equipped with, An absorbent pad characterized in that, when the main body is folded in half along the fold line, the fixing tape is configured to be able to attach the movable end to the second region while straddling the outer edge of the first region and the outer edge of the second region.
2. The absorbent pad according to claim 1, The absorbent pad is characterized in that the main body has a locking portion for locking onto the skin side of a disposable diaper.
3. The absorbent pad according to claim 2, The absorbent pad is characterized in that the fixing tape is configured to cover at least a portion of the locking portion when the movable end is attached to the second region while straddling the outer edge of the first region and the outer edge of the second region.
4. The absorbent pad according to claim 3, The fixed end is positioned closer to the fold line portion than the locking portion provided in the first region. The absorbent pad is characterized in that the fixing tape is configured to cover at least a portion of the locking portion provided in the first region.
5. An absorbent pad according to any one of claims 2 to 4, An absorbent pad characterized in that the locking portion has a hook element.
6. An absorbent pad according to any one of claims 2 to 4, An absorbent pad characterized in that the locking portion is adhesive.
7. The absorbent pad according to claim 6, The absorbent pad is characterized in that the movable end is configured to be attachable to the locking portion provided in the second region.
8. An absorbent pad according to any one of claims 1 to 4, The absorbent pad is characterized in that the fixing tape is configured to straddle the outer edge of the first region and the outer edge of the second region in the longitudinal direction of the main body.
9. An absorbent pad according to any one of claims 1 to 4, The absorbent pad is characterized in that the fixing tape is configured to straddle the outer edge of the first region and the outer edge of the second region in the width direction of the main body.
10. The absorbent pad according to claim 9, An absorbent pad characterized in that a pair of fixing tapes are arranged symmetrically in the width direction of the main body.
11. An absorbent pad according to any one of claims 1 to 4, Self-adhesive adhesives are provided at the movable end of the fixing tape and at the second region of the main body, An absorbent pad characterized in that, when the main body is folded in half along the fold line, the self-adhesive adhesive provided on the fixing tape and the self-adhesive adhesive provided on the second region can be joined to each other.