JPS59228002A - Absorbing article - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to absorbent articles such as disposable diapers, incontinence diapers, postpartum diapers, etc., and particularly to the structure of the absorbent body.

Generally, this type of article has an absorbent body inside and is formed to be elongated in the vertical direction, and the absorbent body is formed to have a desired absorption capacity. However, the parts of the article where body fluids are excreted are naturally limited to the vicinity of the user's excretory organ, and even though the body fluids are excreted intensively in that part, the absorbent body is able to absorb body fluids. Due to the low absorption-diffusivity, body fluids are absorbed intensively into the lower part of the absorbent body, and at the same time flow through the lower surface of the absorbent body to the edges of the article and leak from the edges. Therefore, even though the absorbent body is formed as described above, a wide range of the absorbent body is not effectively utilized for absorbing and retaining body fluids, which causes discomfort to the user and handler.

The purpose of the present invention is to provide an absorbent article having a novel absorbent structure capable of eliminating the above-mentioned drawbacks, and the gist of the present invention to achieve this purpose is as follows: , an absorbent article in which the upper surface of the absorbent body is covered with a water-permeable sheet and the lower surface is entirely covered with a water-impermeable sheet, which rises from the water-impermeable sheet in the thickness direction of the absorbent body; The absorbent body is divided into a plurality of blocks by each impermeable barrier.

Further, the embodiments of the present invention will be described below based on illustrated examples.

In the article 1 shown in FIGS. 1 to 5, the lower surface and peripheral portion of an absorbent body 2 are covered with a water-impermeable sheet 3 and a water-permeable sheet 4, and the absorbent body is covered with a water-permeable sheet 4. 2
The absorbent body 2 is partitioned into a plurality of blocks 6 by each impermeable barrier 5 which rises in the thickness direction but does not reach the water permeable sheet 4.

Furthermore, the absorbent body 2 of the embodiment shown in FIGS. 1 to 3 is partitioned by each barrier 5 so that each block 6 becomes longer in the lateral direction. Furthermore, the absorbent body 2 of the embodiment shown in FIG. 3 lowers each block 6', 6' in a stepwise manner in the area where the user's buttocks are located, giving the user a feeling of a foreign body due to a steep step. Such measures may be applied to other areas depending on the intended use, thickness, size, etc. of the article.

The reason why the absorbent body 2 is partitioned by barriers 5 is to absorb and diffuse body fluids in each block 6 as described later, but in the embodiment shown in FIGS. The absorbent body 2 is traversed by each barrier 5 so that each block 6 becomes longer in the horizontal direction, so that it is effective in preventing leakage of body fluids from the longitudinal ends mainly when the user uses the absorbent body in a supine position. The absorber 2 of the embodiment shown in FIG.
Each block 6 is vertically partitioned with each barrier 5 so that it becomes longer in the vertical direction, and is effective in preventing leakage of body fluids from the lateral ends when the user uses the block 6 in a horizontal position. Moreover, the absorbent body 2 of the embodiment shown in FIG. The device is vertically partitioned with each barrier 5 so that the device is located at the top of the screen and extends in the vertical direction, so that the above-mentioned effects can be obtained regardless of whether the user uses the device in a supine or horizontal position.

Furthermore, the article 1 of the embodiment shown in FIGS. 6 to 8 is shown in FIGS.
In addition to the above effects exhibited by the article 1 of the embodiment shown in FIG. 5, an appropriate layer of absorbent side walls 7 is provided to more effectively prevent body fluids from leaking from both sides of the upper surface of the article. That is, this article 1 has a water permeable sheet 8 on both sides of the upper surface of the article 1 corresponding to the embodiment shown in FIGS. 1 to 3, and an absorbent body 9.
An absorbent side wall 7 coated with is arranged. However, in this article 1, the upper surfaces of both absorbent side walls 7 are covered with both sides of the water-impermeable sheet 3. In the illustrated example, the absorbent side wall 7 is fixed to both sides of the upper surface of the article 1 with an adhesive, but it may be folded into layers as appropriate to form a so-called turn-up structure.

The water-impermeable sheet 3 may include a synthetic resin film, etc.
The water-permeable sheets 4 and 8 may be non-woven fabrics, and the absorbers 2 and 9 may be defibrated i4-lupe or a mixture thereof with other suitable absorbent materials, such as superabsorbent polymer powder. . Furthermore, the absorbent bodies 2 and 9 may be coated with Endes to improve absorbent dispersibility and shape retention, and the side wall 7 may be coated with an end coat so that the dispersibility is higher than that of the main body of the article 1. It is preferable that the material and structure be improved.

As the water-impermeable barrier 5, a synthetic resin film, waterproof paper, hydrophobic fiber, or other material that does not absorb or diffuse body fluids can be used. It may be formed by folding it in the thickness direction of 2. Furthermore, the height of the barrier 5 is at least as high as that of the absorber 2
If the thickness is 10% or more of the thickness, the object of the present invention can be achieved.

In the article 1 of the present invention having the above configuration, body fluids excreted into the article are absorbed and diffused over time and in stages from the block 6 at the excretion site to the next block 6 in contact with this. Therefore, the absorbent body 2 can be used effectively over a wide range, and at the same time, body fluids that are initially excreted like in conventional articles are absorbed into the lower part of the absorbent body 2, and at the same time, the lower surface of the absorbent body 2 and the impermeable sheet 3 are goods 2 through
The fluid will stay at the end of the pipe and will not leak from that end.

In particular, in the article 1 shown in FIG. 5, since there are partitions in the vertical and horizontal directions of inclination, bodily fluids do not leak from either end, and the article 1 shown in FIGS. 6 to 8 In No. 1, the absorbent side walls 7 are arranged on both sides of the upper surface, so even if the user defecates in a lying position and body fluid immediately flows laterally, it often leaks from the lateral ends. Furthermore, since excreted body fluid is absorbed over time and in stages in each block 6, excretion can be immediately confirmed by applying an excretion detection means to the block 6 that is expected to be absorbed first. be able to.

Example (1) A nonwoven fabric of 30 y/m" consisting of 50% by weight of rayon fibers and 50% by weight of polyester fibers and 25% by weight of rayon fibers and 50% by weight of polyester fibers.
Between the μ polyester film and the 80? An absorbent body made of defibrated pulp is interposed, and an absorbent side wall made of defibrated nokrug and having the same thickness as the absorbent body and a width of 50mm is interposed on both sides of the upper surface of the absorbent body, and a barrier made of polyethylene film is used to absorb absorption. An absorbent article of 400*1×200 size as shown in Figs. 6 to 8 with the main body horizontally partitioned was created (Product 1) (2) The absorbent main body was 50y-stitched and the absorbent 911I was 30mm. Other than that, the above implementation product 1
An absorbent article with the same configuration as the above-mentioned example product was created (implementation product 2). (3) An absorbent article with the same configuration as the above-mentioned example product was created except that the absorbent side wall was not provided (implementation product 3).

(4) In addition to removing the barrier from the above-mentioned implementation product 3, the above-mentioned implementation product 3
An absorbent article with the same configuration was created (comparison product).

Examples (Regarding each of the above-mentioned implementation products and comparative products, experiments were carried out when the user urinated in the lying position, Table 1, Figures 9 A, B,
The results shown in C and D were also conducted in an experiment in which the user urinated in the supine position, and the results shown in Table 2 and FIGS. 10A, B, C, and D were obtained.

Tables 1 and 2 show the average value of the amount of absorption at maximum absorption (when leakage occurs), and A, B in Figures 9 and 10,
C, 1) ld indicates the absorption/diffusion state at that time. In Figures 9 and 10, the diagonal lines in E indicate the absorption/diffusion in the upper surface of each experiment, F indicates the lower surface thereof, and G indicates the absorption/diffusion state in the upper and lower surfaces, respectively. Indicates the status of the mark. In addition, the upper area in the figure indicates the area where the user's buttocks are located.

As can be seen from Table 1, Table 2, and the figures above, the tested product is superior to the comparative product in terms of absorption, diffusion, and leakage prevention even when the user urinates in either the lying or supine position. ing.

[Brief explanation of the drawing]

Fig. 1 is a plan view of an article of the present invention having a cross-cut absorbent body with a part cut away, Figs. 2 and 3 are cross-sectional views of each aspect taken along the line A-A in Fig. 1, and Fig. 4. 5 is a plan view of a product according to the present invention having a vertically partitioned absorbent body, FIG. 5 is a plan view of a product according to the present invention having a horizontally divided absorbent body and a vertically divided absorbent body, and FIG. FIG. 7 is a cross-sectional view taken along line C-C in FIG. 6, and FIG. 8 is a cross-sectional view taken along line C-C in FIG. 6. FIG. 9 is an explanatory plan view showing the state of absorption and diffusion when urinating in the supine position, and FIG. 10 in the supine position. DESCRIPTION OF SYMBOLS 1... Absorbent article, 2... Absorbent body, 3... Water impermeable sheet, 4... Water permeable sheet, 5... Barrier, 6 *
6 a + 6 b...block. 6th 6th plan. Part 7 Figure 9 A B C Figure 10 A B C

Claims (7)

[Claims] (1) In an absorbent article in which the upper surface of an absorbent body is covered with a water-permeable seed and the lower surface is covered with a water-impermeable sheet, the water-permeable sheet rises from the water-impermeable sheet in the thickness direction of the absorbent body, but the water-permeable sheet The absorbent article is characterized in that the absorbent body is partitioned into a plurality of blocks with each impermeable barrier having a water impermeability of not more than 100 mL. (2) The absorbent article according to claim 1, wherein the absorbent body is vertically partitioned. (3) The absorbent article according to claim 1, wherein the absorbent body has horizontal partitions across the center and vertical partitions on both sides. (4) The absorbent article according to claim 1, wherein at least one end section in the longitudinal direction of the absorbent body is formed to be gradually lowered toward the outer end. (5) The absorbent article according to claim 1, wherein absorbent side walls are provided on both sides of the upper surface so as to be higher than the upper surface. (6) The absorbent article according to claim 1, wherein at least the side surfaces of the absorbent side wall are covered using both sides of the water-impermeable sheet covering the lower surface of the absorbent body. (7) The absorbent article according to claim 1, wherein the height of the barrier is at least 10 inches greater than the thickness of the absorbent body.