JPS596052A - Body liquid absorbing sanitary 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] Related. It is particularly suitable for special purpose articles such as sanitary napkins and disposable diapers.

This type of article consists of a liquid-absorbing and retaining reservoir pad (made of cellulose fibers) placed between a liquid-permeable sheet that contacts the human body and a liquid-impermeable outer sheet. It has a laminated structure.In this structure,
Means have been added to better maintain the position of this article relative to the body.

Thus, in the case of sanitary napkins, the side facing away from the body is provided with one or more continuous or intermittent adhesive tapes to secure the napkin to the undergarment. ing. These adhesive tapes are often located more centrally than at the edges of the napkin, ie near the longitudinal axis of the napkin.

Considering the different body shapes of users, significant deformation of the absorbent body of the napkin cannot be avoided.

This significant deformation inhibits absorption of body fluids and causes leakage that soils the underwear. Such leakage is also facilitated by the fact that there are no effective barriers in the lateral portions of the absorbent body.

To avoid these disadvantages, the present invention provides for a liquid-impermeable outer sheet to envelop the absorbent pad throughout its thickness, and also to cover the surface of the pad facing the body (i.e., the inside of the pad). A novel structure of the absorbent article is provided, in which the absorbent article is applied on the longitudinal edge 0 of the side surface).

Therefore, a pad made of absorbent material, except for the absorbent surface facing the human body, is made of an impermeable material which is also the outer covering.
pocket. , is inserted inside. Such an arrangement enhances the effect of the pockets throughout the thickness of the absorbent body.

According to a preferred embodiment of the invention, the impermeable outer note has a lateral extension, the lateral part of which is folded back over the longitudinal edge of the side of the pad facing the human body. On both sides and outside the area defined by the absorbent pad, this lateral extension constitutes a continuous or intermittent support for adhesive tape for fixing the napkin to the undergarment. Such an arrangement with the adhesive tape outside the area defined by the absorbent pad allows the widest possible surface of the absorbent pad to be in contact with the body (the napkin is stretched laterally) .

The adhesive tape is preferably placed at a distance from the corresponding edge of the pad approximately equal to the thickness of the pad in the compressed state. Such an arrangement presses the longitudinal edges of the napkin against the user's body and thus improves safety (less risk of side leakage) and absorbency (lower risk of side leakage).
This provides the advantage of increased contact between the absorbent body and the user's body.

Moreover, this sanitary napkin, held by two adhesive tapes on the outside of the pad surface, tends to curve around the user's body, which makes the absorbent effect even stronger.

The present invention can be applied to disposable diapers as well, in which case it also prevents leakage from the sides more effectively and provides absorbency and retention due to the novel structure of the "pocket" effect. Sexuality is enhanced.

Similar to sanitary napkins, the liquid-impermeable outer sheet wraps around the absorbent pad throughout its thickness and is then folded over the longitudinal edge of the inside (closer to the body) of the batt. As it is folded up, it is fully inserted into an impermeable bokerato that is open with respect to its absorbent surface. .

Similarly, this impermeable outer sheet now has lateral extensions to which elastically extensible elements are attached for waterproofing of the crotch.

Other advantages and features of the invention will become apparent from the description of two exemplary embodiments illustrated by the accompanying drawings, in which: FIG.

In Figures 1 and 2 a sanitary napkin is shown comprising an absorbent pad 1 having a side 1a directed towards the user's body and an opposite side 1b. The absorbent pad 1 may be, for example, a cellulosic fiber pad or a fluff pad.

The pad is preferably wrapped in a liquid-impermeable sheet of synthetic material (e.g. polyethylene) and
This sheet is folded over the face 1b of the pad, then over the entire thickness of the pad, and then over the longitudinal edges 1/a and l'b of the face 1a facing the user's body. The absorbent pad 1 is therefore inserted into a pocket 1 of impermeable material except for the widest part of the surface facing the user's body, which constitutes the absorbent surface. .

On the other hand, the impermeable sheet 2 is folded back at the above-mentioned fold 1 above the longitudinal edge of the pad, and has a lateral extension extending outside the surface 1a defined by the absorbent pad. 2a and 2b are constructed.

Attached to said lateral extensions 2a, 2b are adhesive tapes designated 4 and 5, respectively, which are designated by the reference numeral 6 in FIG. 2 and are intended to secure the napkin to the undergarment.

A liquid-permeable sheet 3 covers the surface portion of this sanitary product. For example, adhesive tape 3a.

3b can be fixed to the impermeable sheet 2.

By arranging the permeable sheet on top of the impermeable sheet in this manner, the longitudinal edge 1' of the surface 1a of the pad is
It is possible to form a fold of the impermeable sheet 2 on top of a and l'b.

Adhesive tapes 4 and 5 for holding the napkin in place are placed at both ends of the absorbent pad at a distance ``l1'', which is sufficient to allow its fixation to the undergarment 6, as illustrated in FIG. preferably located at a distance from
The distance °'l1 is chosen to be close to the thickness of the compressed pad.

In FIG. 2 the napkin is shown in the position of use. Adhesive tape 4 used for fixing napkins,
5, this sanitary napkin is placed under lateral tension, which tension has the effect of ensuring as wide a contact surface of the absorbent body of the napkin as possible to the user's body. .

On the other hand, the arrangement of the adhesive tape offers the advantage of extending the liquid-permeable sheet in contact with the user's body, in order to ensure better absorption and better safety.

In Figure 3, two °' fluffs
, a sanitary napkin according to the invention is shown having an absorbent band, consisting of two napkins, one of which is located close to the body, and the other cup is uncompressed. It is likewise possible to introduce particles of highly liquid-absorbing products into the mass of the absorbent pad in a manner known per se.

Adhesive tapes 4 and 5 are preferably covered in a manner known per se, for example with a protective paper coated with silicone.

4 and 5 show a diaper according to the invention. It consists of a laminated structure comprising an absorbent pad 11, an outer sheet 12 impermeable to liquids and a sheet 13 permeable to liquids.

As in the case of the sanitary napkin described above, the impermeable outer sheet is formed on the longitudinal edge of the surface 11a which is directed towards the body of the user of the pad (baby or enuretic adult). It is folded back by ``Fold 1''.

On the other hand, the lateral extensions 12a, 12b have an elastically extensible member, which may be, for example, a laminate of natural or synthetic rubber applied in the region of the crotch. .

A liquid-permeable sheet 3 is fixed onto the combination constituted by an absorbent body and an outer sheet in the form of a "pocket 1".

The above structure, characterized by the special shape of the liquid-impermeable outer sheet, has the advantage of forming a barrier against lateral leakage, while retaining as wide an absorbent surface as possible in contact with the body. bring.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a sanitary napkin according to the present invention,
FIG. 2 is a cross-sectional view of the same sanitary napkin in the position secured to the underwear, and FIG. 3 is a section of the same type of sanitary napkin with an absorbent pad consisting of many layers. This is a perspective view showing a cross section, and FIGS. 4 and 5 respectively show a disposable diaper according to the present invention.
A top view and a cross-sectional view are shown, respectively. In each of the figures above, the main parts are shown with reference numbers as follows. . 1.11... Absorbent pad 1a, lla... Surface ib of the pad facing the body,
ub... Opposite side of the pad 2.12... Liquid impermeable sheets 2a, 2b; 12a, 12b e'' lateral extensions 3.13... Liquid permeable sheets 3a, 3b... Adhesive tape 4.5...Fixing means 6...Underwear 14.15...Engraving of drawings of elastically extensible parts (
(No change in content) Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Kazuo Wakasugi, Commissioner of the Japan Patent Office, dated 28th December 1999, 1, Indication of the case, Patent Application No. 10/2, 1939, Title of the invention: 11↓1, 3, Relationship with the case of the person making the amendment Application artificial ゎ ゎ ゎ ゎ ゎ ゎ ゎ(No change in content) ζ:'
it'4-57, the content of the amendment is as per attached sheet 247-1

Claims (1)

Claims: 1. Body fluid absorption of the type comprising an absorbent pad (1, 11) having a side facing towards the human body and a side opposite thereto and a liquid-impermeable outer seam (2, 12) In the sanitary article, said liquid-impermeable outer sheet (2, 12) envelops said pad on its opposite side (ib, 1ib) and over its entire thickness, and by folding the side of said pad facing towards the human body. the longitudinal edges (la,
1la). 2. A liquid-impermeable outer sheet is further provided on each of the longitudinal edges of the body-facing side (la, 1la) of the pad, outside the area bounded by the absorbent pad (1, 11). lateral extensions (2a, 2b; 12a
. 12b) The sanitary article according to claim 1, wherein the sheet is folded onto itself so as to yield 12b). 3. A patent claim in which the portion of the surface of the absorbent pad facing the human body that is not covered by the liquid-impermeable sheet is covered with a liquid-permeable sheet (3, 13) that is in contact with the human body. Sanitary products listed in item 2 of the scope. 4. Sanitary article according to claim 3, wherein the liquid-impermeable sheet is fixed to the liquid-impermeable sheet in the lateral parts of the latter. 5. Means (4, 5) for fixing this sanitary article to the undergarment above each side part (2a, 2b) and at a distance from the absorbent pad approximately equal to the thickness of this pad in the compressed state. The sanitary product according to any one of claims 2 to 4, which is a reservoir for absorbing menstrual fluid, and comprises: a reservoir for absorbing menstrual fluid. 6. Sanitary article according to claim 5, wherein the fastening means (4, 5) are continuous or intermittent adhesive tapes. 7. Sanitary article according to claim 6, wherein the adhesive tape (4, 5) is covered with a protective tape, preferably a silicone-coated paper tape. 8. On each side portion (12a, 12b) there is an elastically extensible member (14, 12b) at least in the crotch area.
15) A sanitary product according to any one of claims 2 to 4, in the form of a disposable diaper, which absorbs body fluids. 9. In the form of a disposable diaper, the elastically extensible members (14, 15) are straight and located at a distance from the absorbent pad approximately equal to its thickness, as claimed in claim 8. Hygiene products listed.