JP2945430B2 - Disposable sanitary pad - Google Patents

Description

The present invention relates to a disposable sanitary pad with low leakage.

More particularly, the present invention relates to disposable sanitary pads that provide more effective contact of the product with the external area of the perineum of the user, thus reducing the risk of leakage from the side of the product.

To summarize the present invention, there is provided a disposable sanitary pad comprising at least one compression line (10) along and close to each longitudinal edge (9), so that the product of the user's thighs (12, 13) Due to the pressure on the ridges (14) of the absorbent material (3) take on the appearance towards the perineal area (40). The present invention relates to an absorbent material (3) from the secretory point, which is a decisive cause of side leakage.
Aims to reduce the route to.

Prior Art and Problems to be Solved by the Invention Within the scope of the invention, hygiene pads are considered and their absorbent devices are intended to be used outside the female body, usually during menstruation, Contains and retains vaginal secretions.

A disposable sanitary pad is designed to collect bodily fluids from a female body and then be discarded without being used again.

Sanitary pads are a commonly consumed item in modern society and fall into three categories for illustrative purposes. -A tampon-an outer pad-a hybrid pad tampon with two other types of properties has the ability to block menstrual secretions in the vaginal canal with little risk of soiling the user's clothing. They are considered good protection measures. Indeed, failures occur in functionality with respect to the ability to effectively have a functional radial dilation of bodily fluids that causes inflation of the pad, thus sealing the vaginal canal and creating an obstruction within the vaginal canal. In addition, some people cannot use tampon as an effective female protection measure for physical or psychological reasons. Finally, there is the problem of insertion or removal. Sometimes, they stick and are difficult to process, and have medical limitations in some health issues.

So-called hybrid pads incorporate the properties of a tampon and an external sanitary pad. Sometimes they are referred to as wads or labial or vestibular pads, in which a partial or total insertion into the vulva vestibule takes place.

In many cases described in the literature, without considering anatomical cooperation with the user's body,
The effect is that the occlusive profile of some structural elements is often widened. That is, the so-called labial pad functions in frictional contact with highly sensitive urogenital parts, such as the vaginal orifice, urethral orifice and / or clitoris. In other cases, the pad should be securely fixed to the user's undergarment by the part of the pad located inside the vestibule, and in many situations this will result in a friction effect inside the sensitive part Generate

Thus, U.S. Pat. Nos. 2,092,342 and 3,905,3
According to No. 72, the elements inside the vaginal opening are physically connected externally, so that the relative movement between the user's body and the lower structure of the pad is also uncomfortable, frustrating and painful. In a similar manner, U.S. Pat. No. 3,983,873 describes a flap supported against the wall of the labial space to increase pad retention. As in U.S. Pat. No. 4,742,245, there are other vestibular style pads designed to eliminate this irritating factor by relative movement with respect to the body / product / user's clothing. However, the disclosed product is very sophisticated and expensive to manufacture.

External sanitary pads have been developed for use outside the body near the vulvar area to collect menstrual fluids, other vaginal secretions and possibly urine from incontinent women.

In its simplest and traditional form, such pads include an absorbent core placed between a fluid-permeable front sheet (sometimes referred to as a "top sheet") and a fluid-impermeable backing sheet.

Absorbent cores, sometimes referred to as "absorbent elements", are adapted to contain and absorb menstrual and other vaginal secretions. The absorbent core comprises comminuted wood pulp, polymer foam, vegetable pulp, natural or synthetic fibers or other materials that absorb menstrual fluid or similar bodily secretions. Wood pulp fibers are commonly used as a major component of the absorbent core of external sanitary pulp.

The body fluid permeable front sheet contacts the wearer's body during use of the sanitary pulp and allows menstrual or other vaginal secretions to pass through and be absorbed by the lower absorbent core. The front sheet typically comprises a body fluid permeable nonwoven or perforated plastic film. The front sheet can be hydrophilic in nature, but preferably is hydrophobic in nature. In the latter case, menstruation or other secretions will pass through the bodily fluid permeable front sheet, but the sheet will tend to remain touch dry due to its hydrophobicity,
This makes the use of the product more comfortable. Perforated plastic films are usually hydrophobic in nature. If the nonwoven is not made from hydrophobic fibers, it is rendered hydrophobic by treatment with a water-repellent finish, for example, as provided by a fluorochemical, wax emulsion, or the like.

The purpose of the body fluid impermeable backing sheet, as the name implies, is to prevent body fluids collected by the absorbent core from leaking from the sanitary pad and soiling the user's clothing. The backing sheet typically comprises a thin film of plastic, such as polyethylene, but in some cases comprises other materials suitably treated to be liquid impervious, for example, nonwovens. If desired, the backing sheet may be water vapor permeable, i.e., allow the passage of water vapor, but at the same time prevent the passage of liquid.

Leakage, and most commonly, even normal leakage of menstrual blood on the sides, even in very small amounts, is a great discomfort and puzzle for the user. Those skilled in the art
The goal in developing such a product is that the direction Z (in the graph of the three-dimensional representation, the axes X and Y represent a horizontal plane,
And the axis Z is considered to be perpendicular to them). Because, besides technical justification for this purpose, there are psychological reasons to show that rapid Z-flow minimizes the effect of dirt on the pad, and In relation to the condition of the target topsheet, a safety sensation has to be dealt with, thus reducing the possibility of pad failure, that is, the nuisance of leakage.

Traditional types of external pads are simply elongated rectangular products and are made without consideration of the user's anatomy. Thus, during use, such products are subject to deformations that significantly degrade performance and promote frequent leakage.

Starting there, the improvements follow from the prior art:-forming the absorbent sheet in a more anatomical shape, e.g. in the form of a leak, than a rectangle-better between the legs of the user Make the pad generally in the form of a shell to fit and approach the perineal area,-use a topsheet that optimizes the passage of liquid towards the absorbent element and limits return in the opposite direction A more elaborate structure, for example a thicker absorbent element in the central area to create a closer proximity between the secretory point and the pad, and side flaps forming a barrier for leakage.
Creating overlapping structures and the like as in US Patent No. 4,425,130, etc.-by changing the density along the inside of a traditional absorbent sheet or by a layer of variable material, to absorb fibers or super absorbent By using any of the conductive polymers,
By creating greater absorption, the potential for leakage is further reduced, directly or indirectly.

From this refined list, it can be seen that product optimizations of increasing complexity and sophistication tend to make the products more and more expensive in terms of the profits gained, and consequently increase the price for the end consumer .

Investigation into the reasons for the presence of leaks in the external sanitary pad indicates that it is necessary to minimize the path of vaginal secretions to the point where they encounter products that collect and retain such liquids. This is justified, for example, by the fact that bodily fluids flow more or less over the skin adjacent to the site of secretion, either obviously or not, depending obviously on the viscosity and surface tension of such liquids. You. In this way, in some cases, it falls out of the absorbent sheet area and leaks, thus causing the user to feel uncomfortable, embarrassed, and consequently dangerous. The conclusion is that structures with good inherent performance in terms of absorption and leakage retention will work from the moment liquid contact with such structures takes place.

Thus, recognizing the shortcomings of the prior art and the functional need dictated by the foregoing for a product of this type in the art, one of the objects of the present invention is , To provide an external disposable sanitary pad that effectively minimizes the risk of leakage at the sides.

Another purpose is to use new materials and without the use of complex and elaborate structures that are difficult to manufacture,
It is to provide an effective pad.

Yet another object of the present invention is to provide an effective and simple pad having a high cost / benefit ratio.

According to the invention, a disposable sanitary device comprising at least one continuous line obtained by compression along and close to each longitudinal edge of the body of the pad, characterized in that the central region has a thicker absorbent element. A pad is provided. Preferably, each longitudinal edge of the absorbent element is embossed. Such lines are sufficiently far from each other that during use the pressure exerted by the user's thigh provides a bump towards the user's body where fluid is secreted.

The functionality of the pad of the present invention, when used,
Based on the fact that it is compressed into the central part by the user's thigh. This compression causes the material contained between the two lines to be pushed towards the user's body, thus removing a large amount of material.
The need for absorption is closer to the secretory point and made available for absorption, preventing a free path of liquid that could leak into the skin, thus reducing the risk of leakage.

As in the prior art, when the two lines are absent, the absorbent material under the pressure of the user's thigh tends to leave the body or take an accidental form that does not provide good contact at the secretory point. is there.

This is different from the prior art in that the disposable sanitary pad of the present invention causes the absorbent material to bulge (protrude) without requiring the user to use additional absorbent material for this purpose. Means optimizing contact with the body.

As used herein, the expression "compression line" or "line obtained by compression" means that the body of the sanitary pad is inelastic enough to produce a greater density with respect to the surrounding material. It means receiving pressure along the line.
Such lines-at least two-may or may not be straight parallel to each other and the longitudinal edges, and have any thickness. Preferably, the lines are parallel to the longitudinal edges and their width is less than 5 mm, thus:
They promote the formation of bumps when the product is used.

Between the poorly defined line produced by low compression and the well defined line produced by high compression, the latter is preferred, as it is an absorbent sheet towards the user's body under thigh pressure. Enhance the ability to form bumps. However, compression above a certain value has the disadvantage of producing a line of stiff material to the extent that it compromises user comfort. The presence of a single compression line along each longitudinal edge is preferred. However, two or more lines close to each other along each longitudinal edge, or other configurations that do not significantly impair the appearance of the ridge during use of the product, are also encompassed within the scope of the invention.

As used herein, the expression "vertical edge" is:
Means the edge along the length of the absorbent material of the sanitary pad of the invention. This expression does not refer to the end along the length of the product with the side flaps extending beyond the absorbent element.

As used herein, the expression "along and closely along each vertical edge" means that the distance from one line obtained by compression to the nearest vertical edge is the distance between the one line and the opposite vertical edge. Is smaller than the distance between the other line obtained by compression near. Because the compression lines are areas of preferential conduction of liquids due to the high density, they do not approach the longitudinal edges to some extent the risk of leakage and also approach each other so that the formation of the aforementioned ridges is prevented. do not do. Preferably, the distance from the compression line to the closest longitudinal edge is about 5-30% of the width of the absorbent element, and more preferably about 5-20% of the width of the absorbent element.

The distance between the compression lines is also a function of the material or materials that make up the absorbent element that varies in elasticity, density, fiber length, and the like. It is well known to those skilled in the art, and is related to the invention to provide a unique property of the compression line, a preferential method of liquid conduction. And they serve to conduct (or transport) secretory fluids to areas more distant from the point of secretion, i.e., they help to spread the fluid more uniformly and quickly along the entire absorption element, thus: It reduces the contact time of the fluid with the user's skin and helps to avoid leaks that occur with large amounts of menstrual secretion in a single location without compression lines to disperse.

In a very common practical embodiment of a sanitary pad, resilient means associated with side flaps along the length of the product and wood pulp fiber cores as absorbent elements were used. It is noted that compression of the absorbent element occurs during storage of the product. Such elastic means impart anatomical curvature and folds to the product and, due to the elasticity of the wood pulp fibers, preferentially place the product near the anatomical curvature and folds, and thus usually the midpoint of menstrual secretions Around high density and reduced absorption rates. The compression line imparts cohesive force to the pulp panel, thus providing resistance to elastic movement of the fibers where the product is beneficial, ie, along the longitudinal edges. In this case, the compression line directs the secretory liquid to a more remote area of the absorbent element and, during use, provides the aforementioned ridge.

As used herein, the term pad "body" is understood to include at least an absorbent element and includes other layers, such as a front sheet and a backing sheet located on the underside or inside. Thus, the compression line is imprinted, if desired, only on the absorbent element, or on other structural elements, including the pad body. For example, compression lines are made in both the front layer and the absorbent element.

A preferred method for producing a compression line is to place a relief pattern made of a suitable material having the desired format on the absorbent body and press it, if necessary, to heat and squeeze the compression line. By engraving the material of the absorbent element sufficiently to produce Relief
The surface of the absorbent element in contact with the pattern faces the user's body. Otherwise, undesirably, the pressure exerted by the user's thighs will promote the formation of bumps on the surface of the absorbent element which has been diverted from the body.

An example of an industrial realization is to provide a rotating cylinder with a variety of equal relief patterns arranged along the perimeter and under sufficient pressure between the cylinder and the moving belt to provide a compression line at the absorbent element core. Through the absorbent element core.

The disposable sanitary pads of the invention are not limited to a particular type of construction and, optionally, have reliefs, either having hydrophobic or hydrophilic properties, alone or in combination with other materials. Made with or without, a liquid permeable cover sheet of non-woven or perforated plastic film, and-wood pulse or other vegetable pulp, polymer or natural foam, hydrophobic fiber, or a mixture thereof A monolayer or multilayer sheet comprising a superabsorbent polymer with regions having different densities;-a monolayer or multilayer sheet with or without means to adhere to the user's clothing;-absorbable; An outer backing sheet, made of one or more layers of single or multiple layers, wholly or partially hydrophobic, which is not or absorbable; Without or with having a step, - a rectangular in form or other suitable form of hourglass.

The compression line is always located close to the longitudinal edge of the area designed to contain menstrual secretions, and preferably
It has a length of about 1 to 12 cm, and more preferably about 2 to 8 cm.

In a preferred embodiment of the invention, the compression line is not only located along the longitudinal edge, but also extends complementarily to areas that do not directly contain menstrual secretions, but intersects each other and travels in both directions, Have directions towards each other. This is justified by the fact that in this embodiment, a more rapid and homogeneous dispersion of the liquid collected in the absorption element is optimized.

However, this does not preclude embodiments in which the compression lines do not intersect or are radially subdivided, or have the ability to form a ridge between the compression lines when subjected to the pressure of the user's thigh. This does not preclude other embodiments of dispersing the collected liquid without significant damage.

The present invention is shown in connection with the disposable sanitary pads described and claimed in Brazilian patent application PI8601226. This example is given solely by way of illustration and is not intended to limit the scope of the claims.

Embodiments Referring now to the accompanying drawings, there is shown an external sanitary pad 30 in accordance with the teachings of the present invention. Pad 30 which is elongated in shape and has rounded upper and lower end edges 16 and 17, respectively,
Body fluid permeable front sheet 1 and absorbent element or absorbent core 3
And a body fluid impervious backing sheet 2. pad
30 further comprises a pair of elastic elements 6, 6 'located adjacent the longitudinal edges 18, 19 of the pad, respectively. The pad 30 has compressed lines 10, 11, 12a, 12b, 12c, 12d, 13a and 13b.
And described in further detail below. For example, in the drawing
1b, front sheet 1 and backing sheet 2
Are coextensive in width. Sheets 1 and 3 are also coextensive in length. The absorbent element 3 has a length smaller than the length of the front and backing sheets and a width smaller than the width of the front and backing sheets. The absorbent element 3 has a pair of longitudinal side edges 9, 9 ', a rounded top edge 21 and a rounded bottom edge 22, which together define the circumference of the absorbent element. Absorbing element
It is located between the front sheet 1 and the backing sheet 2 in the manner best seen in FIG. 1b. The front sheet 1 and the backing sheet 2 are fixed to each other at a peripheral portion by, for example, heat sealing. That is, they are between the perimeter of the absorbent element 3 and the perimeter of the pad 30 defined by the aforementioned top edge 16, bottom edge 17, and the two longitudinal edges 18,19. The vertical side flaps 4, 5 are provided on the sanitary pad 30 as a result of fixing the sheets 1 and 2 together in the manner described above.

The elastic elements 6, 6 'are located between the front sheet 1 and the backing sheet 2 at the vertical flaps 4, 5 of the pad 30, respectively. These elastic elements are stretched but elastically contractible when the pad 30 takes the flat configuration shown in FIG. 1a. When the elastic element is allowed to contract from the extended state, the sanitary pad takes the “boat-like” configuration shown in FIG. 2a. The elastic element comprises one or more rubber monofilaments secured between the front and backing sheets, for example by using a molten adhesive, in the manner seen in FIG. 1b. However, preferably, a strip of thermoplastic film that shrinks and becomes elastic upon thermal treatment is used for the elastic element. Several heat-shrinkable thermoplastic films having elastic properties after heat-shrinking are known in the art. It is preferred to use a strip of a heat-shrinkable copolymer of ethylene and vinyl acetate having a basis weight of 35 grams per square centimeter, a length of about 13 cm, a width of about 1 cm, and a thickness of about 30 microns. Preferably, the elastic element is approximately
It has a length that is 60% and is centered from end to end of the pad. The aforementioned strip of heat-shrinkable copolymer is:
As shown in FIG. 1a, the looseness between the front and backing sheets is secured by the use of a heat sealing device provided with a series of spaced horizontal securing lines 7. The fixing lines 7 are separated from one another by an unsealed area 8. When the heat-shrinkable elastic element 6 is secured between the front and backing sheets by using a heat sealing procedure, as described above, the applied heat also serves to shrink the elements 6, 6 ', This provides elastic properties. If the heat-shrinkable elastic elements 6, 6 'are fixed, for example by use of an adhesive, they shrink and post-treat the elements with heat, for example by using hot air, in order to obtain elastic properties. It is necessary to. When the elastic elements 6, 6 'are in the contracted state, the sanitary pad 30 assumes the anatomical shell configuration shown in FIGS. 2a and 2b. The side flaps 4, 5 and the portion of the sanitary pad adjacent thereto are raised upward so that, as seen in FIG. 2b, the flaps are in the flat form of the pad 30 shown in FIG. 1b. Horizontal plane
Form an angle of about 30 ° with 36.

Preferably, but not necessarily, the body fluid permeable front sheet 1 is a non-woven fabric comprising heat-sealable polyester fibers, having a basis weight of 22 g / m and a weight per square inch of 144 g.
With perforations. The bodily fluid impermeable layer 2 is preferably made of 19
It consists of a film of polyethylene having a basis weight of g / cm ² and a thickness of about 0.020 mm. When the front sheet 1 is made of heat-sealable polyester fibers and the backing sheet 2 is made of polyethylene, the front and backing sheets are hermetically sealed together at the periphery by heat sealing technology. In a preferred embodiment, the absorbent element 3 comprises a layer of 100% wood pulp fluff having a weight of about 7 grams.
In a typical sanitary pad, the absorbent element 3 is approximately 20 cm
Is about 6 cm long and about 6 cm wide. The absorbent element 3 is sandwiched between the liquid-permeable front sheet 1 and the liquid-impermeable backing sheet 2 in a known manner.

In one embodiment of the present invention, the sanitary pad 30
Comprises a first pair 10, 10 of compression lines running parallel to the longitudinal side edges 9, 9 'of the absorbent element 3. For a sanitary pad 30 having a length of 22 cm, the compression lines 10, 11 are advantageously approximately 6 cm in length (between points A and B in FIG. 1a and between points A 'and B'). Between) and the longitudinal edge 9, of the absorbent element 3,
It is placed slightly inside (about 0.8 cm) from 9 '. Compression wire 1
0, 11 are located substantially centrally between the top and bottom edges of the pad.

In a second more preferred embodiment, a sanitary pad
30 further includes four additional compression lines. As seen in FIG. 1a, a pair of compression lines extend from the end of each compression line 10, 11 to a point (C and C 'in FIG. 1a) located on the longitudinal center line of the sanitary pad 30. At an angle towards. Thus, at the upper end of the pad 30, the third compression line 12a is located at the center line 33 between the upper end A 'of the first compression line 10 and the upper edge 16 of the pad. 1 point C
Extends to. Similarly, the fourth compression line 12b is the second compression line 1
1 extends from the upper end A to a first point C. A second pair of angled compression lines 12c, 12d is provided near the bottom of the sanitary pad. The fifth compression line 12c is
It extends from the lower end B 'of the compression line 10 to a second point C' located on the center line 33 between the end B 'of the pad 30 and the lower edge 17. The sixth compression line 12d extends from the lower end B of the second compression line 11 to a second point C 'located at the center line 33.

When the compression lines 10, 11, 12a, 12b, 12c and 12d are arranged in the manner described above, they form an elongated hexagonal configuration best seen in FIG. 1a.

Still referring to FIG. 1a, a first compression line 10 and a second compression line 11 run parallel to each other and parallel to the longitudinal side of the absorbent element 3. It has a length of about 22 cm and a width of about 8 cm, and about 2
In a typical sanitary pad 30, including an absorbent element 3 that is 0 cm long and about 6 cm wide, the compression lines 10 and 11 have a length of about 6 cm and a width of about 0.15 cm. Typically, compression lines 10 and 11
Are separated by a distance of about 4 cm.

In another embodiment of the present invention, the sanitary pad has yet another pair of compression lines extending along the longitudinal centerline 33. Thus, as seen in FIG. 1a, the seventh compression line 13
a extends from point C to point D on the longitudinal centerline 33 in the direction of the upper end of the sanitary pad. Similarly, the eighth
A compression line 13b extends from point C 'to point D' on the longitudinal centerline 33 in the direction of the lower end of the sanitary pad. Pad 30 and compression lines 10, 11, 12a, 12b, 12c and 12d
When having the above representative length, the compression lines 13a and 13b typically have a length of 1.5 cm. Pad 30 and absorbing element 3
Those skilled in the art will recognize that the various dimensions described above for some compression lines are exemplary dimensions, and that these dimensions can be varied without departing from the spirit and scope of the invention. Is done.

A steel plate having a ridge corresponding to the desired pattern of compression lines is used to form the aforementioned compression lines. By way of example, the absorbent element is placed on a fixed surface and then covered with the steel plate, so that the ridges of the steel plate contact the upper surface of the absorbent element. The steel sheet is then pressed at a pressure of 9 psi at a Norwegian hydraulic press (No.
Pressed against the absorbent element using a rgren hydraulic press).

FIG. 3 shows the pad of FIG. 2 in use in contact with the perineal area 40 of the user. Under the pressure of the user's thighs 12 and 13, a ridge 14 is formed between the compression lines 10,11. Flaps 4 and 5 are located against the user's thigh, and also
Useful for limiting side leakage.

FIG. 4 shows three examples of the form of the compression line used in the present invention. In a, the compression lines do not intersect. In b, the compression lines meet and diverge radially toward the farthest region of the pad. In c, two compression lines are used along each vertical edge.

The test was performed on a group of 17 women with the sanitary pad of the present invention as shown in FIG.

Each woman received seven pads with compression lines according to the present invention (referred to as Group A pads) and another seven pads similar but without compression lines (referred to as Group B pads).

Each woman wore alternating Group A and Group B pads during menstruation. The average time of use of each pad is
4 hours.

After use, each pad was inspected for the formation of a central ridge and the occurrence of side leakage.

The results are:-40% of Group A products compared to Group B products
Many have shown the formation of a central ridge, revealing the fact that the use of compression lines, as disclosed by the present invention, leads to the formation of a central ridge.

-5% of Group A products compared to Group B products
Fewer, showing signs of leakage at the sides, and as disclosed by the present invention, indicated that a bulge near the secretory point would help prevent leakage.

 The main features and aspects of the present invention are as follows.

1. A disposable sanitary pad comprising at least one line obtained by compression along and near each longitudinal edge of the body of the pad.

2. Pad according to claim 1, characterized in that it comprises one line obtained by compression along and close to each said longitudinal edge.

3. Pad according to claim 1, characterized in that it comprises two or more lines obtained by compression along and close to each said longitudinal edge.

4. The pad according to any one of the above items 1 to 3, wherein the compression line has a length of about 1 to 12 cm.

5. The pad of claim 4, wherein the compression line is about 2-8 cm long.

6. The pad as described in any one of 1 to 5 above, wherein the compression line has a width of about 1.5 to 5 mm.

7. The pad according to any one of the above items 1 to 6, wherein the compression line is parallel to a vertical edge of the pad.

8. The pad according to any one of the above items 1 to 7, wherein the compression lines are parallel to each other.

9. Pad according to any of the preceding claims, characterized in that a compression line is printed on the absorbent element of the pad.

10. Pad according to any of the preceding claims, characterized in that the compression lines are printed on the absorbent element and the permeable layer of the pad.

11. The pad according to any one of the above items 1 to 8, wherein a compression line is printed on a structure constituting the pad.

12. Compression lines (AB, A'B ') extend to areas that do not directly contain menstrual secretions, one of which is directed towards the other until it intersects the other (C, C') 12. The pad according to any one of the above items 1 to 11, characterized in that it extends slightly further (D, D ') in both directions.

13. The distance between the compression line and the nearest longitudinal edge, wherein the distance between the compression element and the nearest vertical edge is about 5 to 30% of the width of the absorbing element.
Pad according to any one of the twelve.

14. The distance between the compression line and the nearest longitudinal edge, wherein the distance between the compression element and the nearest vertical edge is about 5 to 20% of the width of the absorbing element.
Pad according to any one of thirteen.

[Brief description of the drawings]

FIG. 1a is a top view of the product before thermal contraction of the elastic means used. FIG. 1b is a schematic cross-sectional view taken along line II of FIG. 1a. FIG. 2a is a perspective view of the pad of FIG. 1 after thermal contraction of the used elastic means. FIG. 2b is a schematic cross-sectional view taken along line II-II of FIG. 2a. FIG. 3 is a schematic cross-sectional view of the configuration taken by the sanitary pad of FIG. 1a during use. FIG. 4 is a schematic diagram of another arrangement of compression lines used in the practice of the present invention.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-121664 (JP, A) JP-A 54-35599 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) A61F 13/15

Claims (3)

(57) [Claims] 1. A disposable comprising at least one continuous line obtained by compression along and close to each longitudinal edge of the body of the pad, and wherein the central region has a thicker absorbent element. Sanitary pad. 2. The disposable sanitary pad according to claim 1, wherein each longitudinal edge of the absorbent element is in the form of a leak. 3. The disposable sanitary pad according to claim 1, wherein each longitudinal edge of the absorbent element is in a leak-like shape, and a continuous line obtained by compression is parallel to the longitudinal edge.