JP3141990B2 - Disposable body fluid absorber - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disposable body fluid absorber, and more particularly to a body fluid absorber for preventing the absorber from being deformed.

[0002]

2. Description of the Related Art Absorbents conventionally used in disposable diapers and the like are required to have a high absorption rate for liquids such as urine and to have excellent fit when worn. Was mentioned. Therefore, at present, in order to improve the fit, for example, FIG.
As shown in the sanitary napkin, there is an absorber (4) provided with continuous embossments (5) (5) in the longitudinal direction on both side edges. In order to further improve the absorption speed of the absorber, for example, as shown in FIG. 3, there is a structure in which a fine and weak emboss (5) is provided on almost the entire absorber (4).

[0003] As described above, in the conventional absorber, the main purpose is to improve the absorption performance of urine and the like and to improve the fit to the body, but an absorber satisfying both performances simultaneously has not been obtained. In addition, in the conventional absorber, the shape of the absorbent polymer in the inside is deviated such that the distribution of the absorbent polymer is offset, and this solution has been urgently solved.

[0004]

DISCLOSURE OF THE INVENTION The present invention has been made to address these problems, has excellent adhesion to the body, and has a high rate of absorbing body fluids such as urine, stool, and menstrual blood. In addition, a disposable body fluid absorber that prevents shape collapse before and after absorbing body fluid has been developed.

That is, the absorbent of the present invention is a disposable bodily fluid absorbent, which is provided on both sides of the longitudinal center of the absorbent inside the side edges of the absorbent , specifically at least w / 14 (w).
Is provided with a pair of outer embossing lines extending longitudinally along the side edge and being open at the front and rear sides of the longitudinal direction along the side edge, respectively, and further inside these convex curved lines. Extending along the longitudinal direction
By providing a pair of inner embossed lines that are opened later , the absorption in the longitudinal direction is promoted and the fit is improved. At this time, the length of the pair of outer embossed lines is set to 3 /
6 to 5/6, and these arrangements in the width direction are separated from each other by 4/7 to 6/7 of the entire width of the absorber, and the length of a pair of inner embossed lines is set to 3/6 of the total length of the absorber. 55/6, and the shortest distance between the convex portions is the distance between the pair of outer embossed lines.
It is effective to set 1/6 to 5/6.

The present invention relates to an absorber (4) as shown in FIG.
A pair of outer embossing lines (1) and (1) are provided on both sides of a longitudinal center portion of the absorbent article in a shape along the side edge of the absorbent body, and further inside each other inside these outer embossing lines (1) and (1). And a pair of inner embossing lines (2) and (2) convexly curved.

[0007] The outer embossing line is for improving the fitting property and for improving the absorption speed by diffusion in the longitudinal direction, and at the same time, preventing the shape from being lost. The outer embossing line (1) (1) the length of (L ₁₎ from was 3/6 to 5/6 of the absorbent body overall length (L) is
If it exceeds 5/6, leakage of urine and the like in the waist direction of the absorber (4) occurs, while if it is less than 3/6, the fixing effect is small, so that the shape collapse cannot be effectively prevented. The preferred length is about 4/6 of the total length (L). Also, the interval (W) between these outer embossing lines (1) and (1)
₁ ) was set to 4/7 to 6/7 of the full width (W) of the absorber.
If it exceeds / 7, the effect of preventing shape collapse will be reduced, and if it is less than 4/7, the distance between the embossed lines on both sides will be too narrow, and the absorber will feel hard. A preferable interval is about 4/7 of the entire width (W).

Next, the above-mentioned inner embossed line aims at further improving the absorption rate by diffusion in the longitudinal direction, and at the same time,
This is to prevent the shape from being lost. The length (L ₂ ) of the inner embossed lines (2) and (2) is determined by the total length of the absorber (L).
The reason for 3/6 to 5/6 is the same as the reason for limiting the outer embossed line, because if it exceeds 5/6, leakage of urine etc. from the waist direction will occur, and if it is less than 3/6, it will lose its shape. . The preferred length is about 4/6 of the total length (L). The shortest distance (W ₂ ) between the convex portions of the inner emboss lines (2) and (2) is set to 1/6 to 5/6 of the mutual distance (W ₁ ) of the outer emboss lines (1) and (1). Is the same as the reason for limiting the outer embossed line.
If the value exceeds / 6, the effect of preventing shape collapse is small, and if it is less than 1/6, the absorber becomes hard. The preferred shortest interval is about the outer emboss line interval (W ₁ ).
2/6 is good.

As the embossing method in the present invention, there are a method using embossing only by pressure, a method using heat and a method using a combination with an adhesive. Embossing may be performed on the absorber alone, or may be performed after the absorber is combined with another member.

[0010]

Next, the present invention will be described in detail with reference to examples.

In the absorbent body (4) of the present invention shown in FIG. 1, the length (L ₁ ) of the outer embossed lines (1) and (1) is set to 4/6 of the overall length (L) of the absorbent body. (W ₁ ) is 4/7 of the overall width (W) of the absorber, and the length (L ₂ ) of each of the inner embossed lines (2) and ( ₂ ) is L × 4/6, and the shortest distance (W ₂ ) Was changed to W ₁ × 2/6 to prepare an absorber A of the present invention.

Further, as absorbers B and C of the present invention, those having the dimensions of the outer and inner embossing lines shown in Table 1 were prepared, and those having no such embossing lines as conventional absorbers were prepared. Were subjected to an absorption rate test and a mold collapse test, and the results are shown in Table 1.・ Absorption speed test Apply a constant load to the center of the absorber, pour 100cc of physiological saline, and measure the time required for all to be absorbed. ・ Deformation test Grab both side edges of the longitudinal center of the absorber with both hands and massage 10 times Rub them together and judge the degree of collapse of the absorber with sensory

[0013]

[Table 1]

From Table 1, it can be seen that all of the absorbers of the present invention have a high liquid absorption rate and a small deformation. Further, when a disposable diaper for adults was made using these absorbents and tried on, all of the absorbents of the present invention had better fit than conventional ones.

[0015]

As described above, according to the present invention, it is possible to obtain an absorbent body which is excellent in both absorption speed and fitting property and has a high effect of preventing shape collapse, and is developed not only for infants and babies but also for adults and pants-type diapers. Can be suitably used.

[Brief description of the drawings]

FIG. 1 is a plan view showing an absorber of the present invention.

FIG. 2 is a plan view showing an example of a conventional absorber.

FIG. 3 is a plan view showing another example of the conventional absorber.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Outer emboss line 2 Inner emboss line 4 Absorber 5 Emboss

Continued on the front page (72) Inventor Kenji Takahata 6-22-1, Nishishinjuku, Shinjuku-ku, Tokyo Inside Crecia Co., Ltd. (72) Inventor Hiroaki Matsubara 6-22-1, Nishishinjuku, Shinjuku-ku, Tokyo Co., Ltd. Within Crecia (72) Inventor Kane Kanae 6-22-1, Nishi-Shinjuku, Shinjuku-ku, Tokyo, Japan Inside Crecia Co., Ltd. (72) Inventor Nobutaka Hayashi 6-22-1, Nishi-Shinjuku, Shinjuku-ku, Tokyo Co., Ltd. (56) References JP-A-10-155732 (JP, A) JP-A-4-282153 (JP, A) JP-A-6-63075 (JP, A) JP-A-6-245951 (JP, A) Kaihei 1-192801 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) A61F 13/53 A61F 13/15 A61F 13/49

Claims (3)

(57) [Claims] 1. In a disposable body fluid absorber, w / sides of a side edge portion of the absorber are provided on both sides of a central portion in a longitudinal direction of the absorber.
14 (w is the full width of the absorber), a pair of outer embossing lines extending longitudinally along the side edge and opened at the front and rear sides of the longitudinal direction are provided on the inside, and further inside each other inside these. Extending along a convex curved longitudinal direction and longitudinal
A disposable body fluid absorber characterized by providing a pair of inner embossing lines that are opened before and after each direction to promote absorption in the longitudinal direction and improve fit. 2. The length of the pair of outer embossing lines is 3/6 to 5/6 of the entire length of the absorber, and their widthwise arrangement is separated from each other by 4/7 to 6/7 of the entire width of the absorber. Claim 1
The disposable body fluid absorber according to the above. 3. The length of the pair of inner embossing lines is 3/6 to 5/6 of the total length of the absorber, and the shortest distance between the convex portions is 1/1 / the distance between the pair of outer embossing lines. The disposable body fluid absorber according to claim 1 or 2, which is 6 to 5/6.