JP2000232985A - Incontinence liner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a incontinence liner which is capable of imparting excellent body fluid absorption performance to incontinence shorts or general underwear, does not degrade a wearing feel, is convenient to carry and is advantageous in terms of a cost when used as the incontinence shorts or in combination with the general underwear by providing the incontinence liner which is extremely thin and has excellent flexibility while maintaining a large body fluid absorption quantity and a high absorption rate and is adequate over a wide range from incontinence of a light degree to the incontinence of a middle degree. SOLUTION: The throw-away incontinence liner formed by interposing an absorption sheet 4 between a top sheet 1 and a back sheet 5 is a sheet-like absorbent having an absorption layer 3 in which a particulate polymer absorbent is bonded by microfibril-like fine fibers and a sheet-like supporting body 2 for supporting this absorption layer 3 as the absorption sheet 4. In such a case, the particulate polymer absorbent is of specific METSUKE (unit) and the sheet- like absorbent having a specific thickness and bending resistance is used.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an incontinence liner worn in combination with incontinence pants or general underwear. More specifically, the present invention relates to an incontinence liner that is extremely thin and has excellent flexibility while maintaining a large amount of body fluid absorption and a high absorption rate, and is suitable for a wide range of mild to moderately severe incontinence of healthy persons.

[0002]

2. Description of the Related Art Conventionally, disposable incontinence liners having an absorbent sheet interposed between a top sheet and a back sheet have been used by attaching them to underwear or the like for sanitary or incontinence use. For example, light incontinence of healthy subjects is considered to have a very small amount of incontinence of 10 cc or less, and it is not bulky during the wearing period until absorption of body fluids, emphasizing long-term wearing comfort such as excellent biocompatibility and stuffiness, There is known a disposable liquid absorbing liner which defines a material and a basis weight of a top sheet, a gas permeability of a liquid absorbing sheet, a moisture permeability of a back sheet and a water pressure resistance.
154870 publication).

In addition, various forms and sizes of incontinence pads for mild, moderate and severe incontinence are used mainly for the elderly and the sick, depending on the symptoms of incontinence, the amount of incontinence, sex, etc.
The basic configuration in which an absorbent sheet is interposed between a top sheet and a back sheet is the same as that of an incontinence liner. They are,
It is used by attaching it to ordinary underwear, incontinence pants, special covers or disposable diapers. There are known those having an outer shell forming a basin corresponding to moderate incontinence for healthy women (Japanese Patent Laid-Open No. 4-282153), urine absorbing pads used in combination with disposable diapers for the elderly and the sick, and the like. ing.

Further, an incontinence member is provided in the pants,
Absorb urine when urinary incontinence of women, elderly, sick, etc.,
Incontinence pants that are deodorized are used. There are various proposals for a method of attaching the incontinence member to the pants body. That is, in general, a cloth member obtained by laminating a water-absorbing member, a deodorant member, a waterproof cloth and the like is sewn to the crotch portion of the pants body, but (1) a waterproof cloth sewn to the pants body. A commercially available absorbent pad is removably housed on the inner surface and used as an incontinence member (Japanese Utility Model Application Laid-Open No. 61-18541).
No. 4, JP-A-5-91632), (2)
At least a portion of the incontinence member is sewn to the body of the pant and includes a positioned sack for receiving a separate moisture-absorbing pad.
No. 1, Japanese Utility Model Laid-Open No. 7-18708, Japanese Unexamined Patent Application Publication No. 8-2
No. 80726, etc.), (3) A removable water-absorbing auxiliary sheet or cloth is detachably attached to the inner surface side of the incontinence member sewn to the pants body (actually open flat 7-407).
07, JP-A-10-179624 and the like),
(4) A water-absorbing pad provided with an insertion / removal opening on the back surface of a water-permeable polymer sheet sewn to the pants body on the back surface, which is detachably provided by a fastening member (actual climbing). No. 3010579) is also known.

On the other hand, pulp and a so-called polymer absorbent (S
In the case of a general absorbent sheet composed of a combination with (AP), the higher the ratio of SAP, the more water is absorbed.
A gel blocking phenomenon based on the properties of SAP occurs,
There is a problem that the absorption capacity is not sufficiently exhibited, and a composite composition obtained by coating and binding polymer absorbent particles with hydratable microfibrillar fine fibers obtained from cellulose or a cellulose derivative is placed on a sheet-like support. A formed highly water-absorbent sheet material has been proposed (Japanese Unexamined Patent Publication No.
0-168230).

[0006]

However, the above-mentioned liquid-absorbing liner has a very small amount of liquid absorption, a large amount of incontinence, or a sudden increase in the amount of pursuing the comfort of wearing. Has the drawback of giving anxiety to the elderly. A method of using an absorbent pad such as a commercially available sanitary napkin or incontinence pad directly or in a bag-like portion of the incontinence pants or the like and using the absorbent pad itself has a considerable thickness, In this case, there is a problem that the feeling of wearing is inferior because the storage part itself is considerably thick. On the other hand, general incontinence pants sewn with multiple cloth members, incontinence pants described in (3) above, auxiliary sheets and the like have the advantage of being washable, but are not sufficient in terms of absorption amount and thickness. In addition, since the auxiliary sheet and the like including the water-absorbing pad of the above (4) are relatively expensive and cannot be disposable, it is necessary to carry the used product when going out or traveling, which is troublesome and unsanitary. is there.

SUMMARY OF THE INVENTION The present invention has been made to address the above-mentioned problems, and has as its object the following:
While maintaining a large amount of body fluid absorption and a fast absorption rate, it is extremely thin, has excellent flexibility, and provides a suitable incontinence liner over a wide range from mild to moderate to severe incontinence of a healthy person. When worn in combination with incontinence pants or general underwear, it can provide excellent liquid absorption performance and does not reduce the feeling of wearing. Is to provide a liner.

[0008]

The inventors of the present invention have conducted intensive studies on an incontinence liner that is extremely thin and has excellent flexibility while maintaining a large body fluid absorption amount and a high absorption rate. In a disposable incontinence liner with an absorbent sheet interposed between the back sheets,
By using an absorbent sheet having specific physical properties consisting of specific components and configurations as an absorbent sheet,
The inventors have found that the above problems can be solved, and have reached the present invention.

According to the present invention, in a disposable incontinence liner in which an absorbent sheet is interposed between a top sheet and a back sheet, the absorbent sheet is made of cellulose or a cellulose derivative and has hydratable microfibrillar fine fibers. The main component is a particulate polymer absorber,
An absorbent layer made of a composite composition having a structure in which the particulate polymer absorbents are bonded to each other by the microfibrillar fine fibers, and a sheet-like support for supporting the absorbent layer are provided. A sheet-shaped absorber, wherein the basis weight of the particulate polymer absorber is 50 to 500 g / m2;
Further, the thickness of the sheet-shaped absorber is 0.2 to 2.0 mm, and the JIS (L1096) of the sheet-shaped absorber is used.
The bristles measured by a cantilever type testing machine of 150
mm or less is provided.

Hereinafter, the present invention will be described in detail. The hydratable microfibrillar fine fibers, the particulate polymer absorber, and the sheet-like support obtained from the cellulose or cellulose derivative used in the present invention are generally described in JP-A-10-168230. Those described can be used as they are. In addition, the main component is a microfibril-like fine fiber and a particulate polymer absorbent having hydration obtained from cellulose or a cellulose derivative, and the particulate polymer absorbent is mutually bound by the microfibril-like fine fiber. In principle, the method described in the same publication can also be applied as it is to the method of forming an absorbent layer comprising a composite composition having the above structure on a sheet-like support.

[0011] That is, as the particulate polymer absorbent used in the present invention, general commercial SAP products for absorbent products can be used, and among them, water swellable materials such as polyacrylic acid and salts thereof are preferred. A polymer obtained by partially crosslinking a polymer, such as a sphere, a granule, or a flake, is suitable, and a relatively highly crosslinked polymer is particularly suitable. When the degree of cross-linking is low, the SAP itself can have a high water retention. However, when the sheet-shaped absorber is used, not only has a drawback that the blocking phenomenon due to the absorbing solution easily occurs, but also the rigidity of the sheet-shaped absorber is low. There is a problem that a disadvantage that remarkably increases occurs, and there is a problem that SAP dispersibility in a dispersion medium is inferior at the time of manufacturing a sheet-shaped absorber described later. The particle size of the particulate polymer absorber is not particularly limited, and the main particle size distribution is 20 to 1
A commercially available SAP of 00 mesh is used as it is, but when the particle size is large, uniform coating on the sheet-like support is difficult, which is disadvantageous for thinning, and when it is small, the absorption rate of the sheet-like absorbent tends to decrease. There is. Further, spherical coatings are advantageous in terms of uniform coating properties and thinning.

On the other hand, as microfibril-like fine fibers, MF obtained by grinding and beating wood is used.
C (microfibrillated cellulose) is suitable, and for example, S-MFC (super microfibrillated cellulose) with further advanced microfibrillation described in JP-A-8-284090 is particularly suitable. SA
The ratio of the microfibrillated fine fibers to P is 1 to
If it is lower than this range, the bonding strength between the SAP and the sheet-like support is not sufficient, and if it is higher than this range, the rigidity of the resulting absorbent sheet becomes large. .

The composite composition containing the particulate polymer absorbent and the microfibrillar fine fibers as main components is cast on a sheet-like support as a dispersion liquid in which the composite composition is dispersed in an appropriate dispersion medium and dried. Thereby, a sheet-like absorber in which the absorbent layer made of the composite composition is formed on a sheet-like support is obtained. The composite composition is used to complement the SAP particles between each other and to bind the SAP to the sheet-like support.
A short fiber component longer than the average particle size of the AP may be contained.
As the sheet-like support, a porous non-woven fabric that facilitates the penetration of the dispersion liquid, and is easily obtained by bonding with microfibrillar fine fibers, is suitable.
Hydrophilic materials such as cotton, rayon and wood pulp are preferred. The basis weight of the particulate polymer absorber in the sheet-shaped absorber is 50 to 500 g / m2, and is preferably selected from 100 to 300 g / m2. When the basis weight is smaller than this range, the absorption performance is not sufficient, and when the basis weight is larger than this range, the rigidity is undesirably increased.

At this time, the thickness of the sheet-shaped absorber is
It is 0.2 to 2.0 mm, preferably 0.3 to 1.2 mm. In addition, JIS (L1096) for the sheet-shaped absorber
The bristles measured with a cantilever type testing machine of 150
mm or less, preferably 20 to 120 mm. When the thickness or the softness is smaller than these ranges, it is easy to cause wrinkles and kinks when wearing the incontinence liner, and may impair the effect of wearing. Are undesirably increased because the wear comfort is impaired.

The incontinence liner of the present invention is constituted by using the sheet-shaped absorbent as an absorbent sheet interposed between a top sheet and a back sheet. The arrangement of the front and back of the sheet-shaped absorber is not particularly limited, but it is preferable that the absorbent layer of the sheet-shaped absorber is arranged toward the back sheet side of the sheet-shaped support. At this time, the diffusion function of the sheet-like support works effectively, and a high absorption rate is easily obtained.

As the top sheet, a liquid permeable sheet made of a fibrous nonwoven fabric, a porous plastic film or the like is used. On the other hand, as the back sheet, in the first embodiment, a liquid impermeable sheet such as a plastic film, a laminated sheet of the film and a fibrous nonwoven fabric, a microporous film, and a nonwoven fabric made of water-repellent cellulose fiber, preferably a breathable waterproof sheet However, in the second embodiment, a liquid-permeable sheet such as a fibrous nonwoven fabric can be used.

The incontinence liner according to the first embodiment, in which the top sheet is a liquid-permeable sheet and the back sheet is a liquid-impermeable sheet, has a leak-proof function by itself, and is used for ordinary underwear, incontinence. Suitable for general use, which is detachably attached to the body side of a disposable diaper, a special cover or a disposable diaper, and as an auxiliary pad to be attached to a bag-shaped part formed on incontinence pants, etc. Although it is also suitable, it is particularly suitable to be used while worn on ordinary underwear. At this time, the edge of the back sheet is folded back to the top sheet side and adhered to the top sheet, or the periphery of the incontinence liner is wound around using a liquid-impermeable sheet such as a water-repellent nonwoven fabric separate from the back sheet. Alternatively, it is preferable to form a leak-preventing cuff extending to the top sheet side to prevent leakage from the end.

On the other hand, the incontinence liner according to the second aspect, in which both the top sheet and the back sheet are liquid-permeable sheets, can be inserted into and detached from the inner surface of a waterproof cloth of incontinence pants having a leak-proof function, or can be fixed. It is suitable to be used by being housed in the insertion / removal opening of the water-absorbing pad which can be detached by a member.

In any of the above-described incontinence liners, it is not always necessary to provide the top sheet with the function of preventing re-contamination as in the case of a sanitary napkin. Also, while the conventional incontinence liner tends to increase the wet back amount due to the thick pulp layer,
The incontinence liner of the present invention does not have such a drawback, particularly when used by being attached to a bag-like portion such as incontinence pants or an insertion / removal opening of a water absorption pad, between the incontinence liner and the body surface, Since the top sheet of the bag-shaped part or the constituent members of the water-absorbing pad are interposed, there is no need to consider the feeling of dryness on the surface of the top sheet at the time of liquid absorption and to minimize the re-wetting as much as possible. There is an advantage that a constituent material that emphasizes the diffusion function can be used.

The incontinence liner of the present invention comprises a topsheet,
The backsheet and sheet-like absorber are essential components, but a hydrophilic acquisition sheet such as an air-through thermal bond nonwoven fabric is interposed inside the topsheet, or tissue paper is placed at any position on the upper and lower surfaces of the sheet-like absorber. For example, a hydrophilic diffusion sheet such as a hydrophilic diffusion sheet may be interposed. On the other hand, a non-woven fabric composed of a hydrophilic material such as cotton, rayon, wood pulp or the like is usually used as the sheet-like support, so that the sheet-like support can also serve as a top sheet and / or an acquisition sheet, Therefore, there is an advantage that the cost can be reduced.

In the present invention, the thicknesses of the top sheet and the back sheet are not particularly limited.
1 to 0.5 mm and 0.05 to 0.5 mm. Therefore, the thickness of the incontinence liner of the present invention is 0.3 to 3.0.
mm, preferably 0.4 to 1.5 mm. At this time, the thickness and weight of the incontinence liner and the appropriate flexibility of the incontinence liner based on the rigidity of the sheet-shaped absorber can be realized in a well-balanced manner, and the wearing comfort is achieved.

When the incontinence liner of the present invention is worn in combination with incontinence pants or general underwear, underwear such as shorts, briefs, pantyhose, incontinence pants, exclusive cover or disposable diaper, etc. May be removably mounted on the inner surface of the body side of the body, or may be removably housed in an insertion opening of a bag-shaped portion provided on the inner surface of the incontinence pants or the like. There is no particular limitation on the detachable locking means in the former, and a generally used fastening member such as an adhesive sheet or a hook-and-loop fastener is provided on the back side of the back sheet or / and on the inner side of the incontinence pants or the like. Method can be used as it is.

[0023]

EXAMPLES Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples.

[0024]

Example 1 1) Preparation of sheet-shaped absorbent A gel-like 4.5% aqueous dispersion of S-MFC (manufactured by Tokushu Paper Co., Ltd.) was used as a mother liquor, and ethyl alcohol and ion-exchanged water were added thereto. , Ethyl alcohol / water 70/30,
A microfibril dispersion having an S-MFC concentration of 0.8% was obtained. To 60 cc of this microfibril dispersion, SAP is added.
(Mitsubishi Chemical Corporation, trade name "Aqua Pearl AP211
D ", spherical) and stirred to prepare a slurry-like microfibril / SAP dispersion. This dispersion is applied to one surface of a 30 g / m2 cellulose nonwoven fabric (trade name "TCF # 403", manufactured by Nimura Chemical Industry Co., Ltd.), drained, dried, and dried to obtain a sheet-shaped absorbent. Obtained.
The thickness of this sheet-shaped absorber when left for 10 seconds at a pressure of 120 gf / cm2 is about 0.5 mm.
The bending resistance measured by a cantilever type testing machine of 96) was 67 mm, and the basis weight of SAP was 170 g / m2.

2) Preparation of Incontinence Liner Commercially available napkin (procter & gamble,
Remove the mesh-type top sheet and sub-layer of the product name "Whisper Ultra Slim Regular") and use it as it is, instead of the polymer sheet wrapped with tissue paper, instead of the same size (57 mm width x 165 mm length) A sheet-shaped absorbent body wrapped with tissue paper is interposed between a backsheet made of polyethylene and the peripheral edge thereof is heat-sealed and bonded with a commercially available heat sealer, thereby obtaining a substantially rectangular shape of the present invention. Created incontinence liner. The thickness of this incontinence liner was about 1.3 mm.

3) Evaluation of absorption performance The absorption performance of the incontinence liner was measured by the following measurement method.
The results are shown in Table 1. Table 2 shows a complete absorption amount (g), a product thickness (mm), and a weight (g) defined as an estimated absorption amount until the wet back amount reaches 0.1 g.
It was shown to.

<Measurement Method of Absorption Rate and Wet Back> An acrylic plate with a cylinder (130 mm × 100 mm × 5 mm, the cylinder is 35 mm in inner diameter and 110 mm in length, made of PET with a diameter of 10 mm at the center of the acrylic plate) ) And a load having a total weight of 500 g. Physiological saline 20m
1 is injected from the cylinder part, and the time until the entire amount is absorbed is measured to be the first absorption rate (second). After standing for 30 minutes, 20 pieces of pre-weighed filter paper (No. 2, 100 mm x 100 mm) were placed in the center of the test sample, and an acrylic plate (100 mm x 10
(0 mm x 5 mm), and then a load of 3.5 kg is applied. One minute after the application of the load, the load and the acrylic plate are removed, the weight increase of the filter paper is calculated, and the result is defined as the first wet back amount (g). The above operation is repeated, and the second and subsequent absorption rates and wetback amounts are measured.

[0028]

Example 2 An SAP having an average basis weight of 170 g was prepared in the same manner as in Example 1 except that the dispersion was applied in a parallel line shape having a width of 10 mm and a width of 4 mm of a non-application portion instead of coating the entire surface of the nonwoven fabric. / M2, a sheet-like absorber having a thickness of about 0.6 mm and a longitudinal softness of 72 mm was obtained. Using this sheet-shaped absorber, the same incontinence liner as in Example 1 was prepared, and the absorption performance and the like were evaluated. The results are shown in Tables 1 and 2.

[0029]

Comparative Examples 1-3 Commercial napkins (Procter &
Product name "Whisper Ultra Slim" manufactured by Gamble Company
Table 1 shows the absorption rate and wet-back amount of "regular") and a commercially available incontinence liner (manufactured by Unicharm Co., Ltd., trade name "Charm Nap Sawayaka Liner", 15 cc for women, 50 cc for medium). Table 2 shows the thickness and weight of the product.

[0030]

[Table 1]

[0031]

[Table 2]

[0032]

Examples 3-5, Comparative Example 4 The first layer is 1.25d × 51
mm fine denier rayon fiber, the second layer is 6d × 51
A spunlace nonwoven fabric having a basis weight of 40 g / m2 and a 2-layer structure made of PET fibers having a thickness of 0.1 mm and a thick denier was prepared. Example 1
The microfibril / SAP dispersion prepared in the same manner as described above was applied to one surface of the nonwoven fabric, or applied in a parallel line shape having a width of 7 mm and a width of 3 mm of the non-coated portion. A sheet-shaped absorber was obtained. The sheet-shaped absorber had a thickness of about 0.6 mm, a bending resistance of 50 mm, and a basis weight of SAP of about 200 g / m2. Commercial incontinence liner (made by Unicharm Co., Ltd., brand name "Charm Nap Sawayaka Liner"
0 cc) using a top sheet, an acquisition sheet and a back sheet as they are, and inserting the above-mentioned sheet-shaped absorber having a width of 55 mm and a length of 190 mm in place of the upper and lower two-layer absorber made of nonwoven fabric and SAP, and the tissue diffusion sheet. To prepare an incontinence liner. At this time, the SAP-coated surface of the sheet-shaped absorber faced downward or upward. About the obtained incontinence liner, it is the same as Example 1 except that the diameter of the opening part of the central part of an acrylic plate was 25 mm, the amount of physiological saline for each time was 15 ml, and the standing time after each absorption was 5 minutes. And the absorption rate was measured. Also measure the amount of absorption at this time until leakage occurs,
The thickness and weight are shown in Table 3 in comparison with the original commercial incontinence liner.

[0033]

[Table 3]

[0034]

Examples 6 to 11 and Comparative Examples 5 to 9 In addition to the SAP of Example 1, the product name was "Sunwet IM-855" (manufactured by Sanyo Chemical Industries, Ltd., in crushed form), and the polymer composition was the same. Example 1 was repeated except that a microfibril / SAP dispersion was prepared using the same acrylic acid polymer partial sodium salt and a low cross-linking prototype, and the spunlace nonwoven fabric of Example 3 was used as a sheet-like support. In the same manner as in the above, a sheet-shaped absorber was obtained. Table 4 shows the SAP basis weight, the thickness, and the softness of the sheet-shaped absorber obtained by appropriately adjusting the coating thickness of the dispersion. SAP of these sheet-shaped absorbers
An incontinence liner was prepared in the same manner as in Example 1 with the coated surface facing downward, and the absorption performance was evaluated. The results are shown in Table 5.

[0035]

[Table 4]

[0036]

[Table 5]

[0037]

Examples 12 and 13 and Comparative Example 10 The sheet-shaped absorbers of Examples 1 and 2 were prepared. Using the top sheet, sub-layer and back sheet of a commercially available incontinence pad (Pigeon Co., Ltd., trade name "Havi Nurse Comfortable Pad Clear") as it is, instead of the upper and lower pulp absorbers containing SAP and the tissue diffusion sheet Then, the sheet-shaped absorber corresponding to the projected area of these absorbers was wrapped with tissue paper and inserted, to prepare an incontinence pad. At this time, the SAP-coated surface of the sheet-shaped absorber was downward. The absorption rate and wetback amount of the obtained incontinence pad were measured in the same manner as in Example 1 except that the amount of liquid injected each time was 80 ml. The results are shown in Table 6 together with the weight.

[0038]

[Table 6]

[0039]

According to the invention of the present application, it is extremely thin and has excellent flexibility while maintaining a large amount of body fluid absorption and a high absorption rate, and is suitable for a wide range of mild to moderately severe incontinence of healthy persons. Incontinence liner is provided, which can provide excellent liquid absorption performance when worn in combination with incontinence pants or general underwear, and does not deteriorate wearing feeling, and is convenient for carrying. Thus, an incontinence liner that is advantageous in terms of cost is provided.

[0040]

[Brief description of the drawings]

FIG. 1 is a schematic cross-sectional view showing a configuration of an incontinence liner of the present invention.

FIG. 2 is a schematic cross-sectional view showing another configuration of the incontinence liner of the present invention.

FIG. 3 is a schematic cross-sectional view showing another configuration of the incontinence liner of the present invention.

FIG. 4 is a schematic cross-sectional view showing still another configuration of the incontinence liner of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 top sheet 2 sheet-like support 3 absorption layer 4 sheet-like absorber (absorption sheet) 5 back sheet 6 acquisition sheet 7 tissue paper

Continued on the front page (51) Int.Cl. ⁷ Identification code FI Theme coat II (reference) B32B 5/16 F term (reference) 3B029 BA04 BA12 BA18 4C098 AA09 CC03 CC21 CC27 DD05 DD14 4F100 AJ04A AJ06A AK04 AT00B BA03 BA04 BA10B BA10C BA10D CB03 DG03A DG11 DG15 EC18 GB72 JB05A JD05C JD05D JD14A JK13A JK17A YY00A

Claims (5)

[Claims] 1. A disposable incontinence liner having an absorbent sheet interposed between a top sheet and a back sheet, wherein the absorbent sheet is made of cellulose or a cellulose derivative and has hydratable microfibrillar fine fibers and particulate polymer. An absorbent layer composed of a composite composition having an absorbent as a main component and having a structure in which the particulate polymer absorbents are mutually bonded by the microfibrillar fine fibers, and a sheet supporting the absorbent layer. A sheet-shaped absorber comprising a support and a particulate polymer absorber having a basis weight of 50 to 500 g / m 2 and a thickness of the sheet-shaped absorber of 0.2 to 2. 0 mm and the stiffness of the sheet-shaped absorber measured by a JIS (L1096) cantilever type testing machine is 150 mm or less. Liner. 2. The incontinence liner according to claim 1, wherein the absorbent layer of the sheet-shaped absorbent body is arranged toward the back sheet side of the sheet-shaped support. 3. The incontinence liner according to claim 1, wherein the top sheet is a liquid-permeable sheet, and the back sheet is a liquid-impermeable sheet. 4. The incontinence liner according to claim 1, wherein both the top sheet and the back sheet are liquid-permeable sheets. 5. The incontinence liner according to claim 2, wherein the sheet-like support also serves as a top sheet.