JPH07506743A - Sanitary napkins with barrier means - 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] Sanitary napkins with barrier means field of invention The present invention comprises a first surface, a second surface, two longitudinal side portions and two lateral side portions. an absorbent core having a periphery consisting of; A to-tsubu sheet that overlaps with the first surface of the core, and a to-tub sheet that overlaps with the second surface of the core. a liquid-impermeable rear sheet associated with the top sheet; and said longitudinal side to restrain liquid from moving in the direction of said lateral side. The present invention relates to a sanitary napkin having a barrier means arranged along a section.

Background of the invention Such a sanitary napkin is known from British Patent No. 2,168,253.

In this patent application, the barrier means are arranged outside the periphery of the core and these barrier means is formed by an upright elastic part consisting of a top sheet and a bottom sheet. This barrier means is designed to reduce lateral movement of liquid. The rate of absorption of liquid trapped between the stage and the core is reduced. In addition, well-known sanitary The position of the push button may shift during use.

The purpose of the invention is to provide an unobtrusive and effective lateral spread of body fluids during use. By providing sanitary napkins with barrier means that effectively limit the absorption capacity and provide adequate absorption capacity. be.

Another object of the invention is to provide a sanitary napkin that can be positioned securely with respect to the user's underwear. The goal is to provide the following.

Summary of the invention The sanitary napkin according to the invention is characterized in that the barrier means has a free edge above the plane of the first side of the core. constitutes a wall with a section, and the free edge extends around the core at least during use of the sanitary napkin. It is characterized by being placed within a

The barrier means is arranged such that at least the free edge thereof is not lateral to (above) the absorbent core during use. By placing the barrier horizontally along the top sheet by means of Liquid that is stopped from spreading in the direction is easily absorbed by the core.

Another absorbent article according to the invention has a backsheet that extends beyond the circumference of the core, Forming a flap for attachment to clothing, the barrier means attaching the core to the flap. It is characterized in that it constitutes a wall adjacent to and connected to the surrounding area.

The flap allows the wearer to Can be folded upwards around the edges of the underwear. Regarding the patent, Therefore, the contents disclosed in that patent are incorporated herein by reference. disability The flaps in combination with the wall means reduce the lateral movement of body fluids. I know that. The barrier means may be by a liquid-impermeable wall or by e.g. glue or can be formed by an absorbent strip connected to the flap by a fusion bond. . The free edge of the wall prevents body fluids retained by the wall during use of the sanitary napkin. For effective absorption, it is preferably placed within the periphery of the core. however , the free edge of the wall may be located outside the periphery of the core, or, for example, the shaped core is used, extend the free edge of the wall around the wide part of the core and It may be placed in

One embodiment of the absorbent article according to the present invention is arranged between a top sheet and a back sheet. A wall is formed by the placed spacing members.

The spacing member is placed outside the periphery of the bottom between the top sheet and the back sheet. , formed by a cantilever made of flexible material that pushes the top sheet upwards. Good. During use of the sanitary napkin, the napkin is compressed in the direction of the lateral sides and the top The sheet is lifted by a cantilever. Preferably, the top sheet and The free edge of the wall formed by the cantilever is located around the core during use of the sanitary napkin. Good absorption of body fluids pushed into the enclosure and held by the cantilever.

Barrier means may also be glued or otherwise connected between the topsheet and the core. consists of foam strips or foam strips glued to the top of the top sheet. Good.

Another embodiment of the absorbent article according to the invention is characterized in that the barrier means consists of a topsheet; The center part of the top sheet overlaps the core, and the edge part overlaps the longitudinal sides of the core. It is characterized by forming a wall along.

Although the topsheet is fluid permeable, the barrier means prevents body fluids from spreading laterally. restrain it so that it does not become loose. By using the top sheet to form the walls components used in sanitary napkins, reducing the need for separate barrier means. Keep the number low. This is desirable for manufacturing purposes. Barrier means all around the core The fluid should preferably extend along the longitudinal sides of the I'll do my best.

Preferably, the free edge of the barrier means is contracted before use, so that during use , the barrier means is extended, pulled away from the topsheet and erected. This contraction by applying a pre-stretched elastic member along the free edge of the barrier means. It can be given as follows.

Barriers that can be formed by topsheets, backsheets, or a combination thereof The free edges of the barrier means are crimped by heating and shortening the free edges of the barrier means. It is good to have a stamped finish. By thus shortening the free edge, The barrier means stands up when the sanitary napkin is stretched longitudinally during use.

Brief description of the drawing Some embodiments of sanitary napkins according to the invention will be described in detail below with reference to the accompanying drawings. explain.

FIG. 1 is a plan view of the sanitary napkin of the present invention, and FIG. 2 shows that the top sheet is obstructive. 1 is a cross-sectional view of the sanitary napkin of FIG. 1 taken along line 2-2 of FIG. 1 forming the wall means; Yes, Figure 3 shows that the barrier means is formed by the topsheet and within the periphery of the core. 1 is a cross-sectional view of a sanitary napkin according to the invention, arranged; FIG. 4 shows a sanitary napkin according to the invention in which the backsheet forms a barrier means. FIG. 5 is a cross-sectional view of an embodiment in which the formstrip forms a barrier means; FIG. 6 is a cross-sectional view of one embodiment of a sanitary napkin, the cantilever forming a barrier means; 1 is a diagram of an example of a sanitary napkin, Figure 7 shows a flap in which the strips glued to the flap form a barrier means; 1 is an illustration of an embodiment of a sanitary napkin with FIG. 8 is a front view of conventional panties in which the sanitary napkin according to the present invention can be used. the law of nature, Figure 9 shows the sanitary napkin of Figure 1 placed in the panties of Figure 8; Figure 8; It is a sectional view along line 6-6 of the panties of Figure 10 shows a cross-section of the sanitary napkin and panties of Figure 8 placed on the user; , a schematic coronal view.

Example A preferred embodiment of the sanitary napkin of the present invention is shown in FIGS. 1 and 2. sanitary napkin The collar 210 has a central absorbent pad 212 and two flaps 224 and 224'. It has absorbent means comprising: (In the following discussion, sanitary napkins are used with special instructions. Has two flaps unless otherwise specified.

The flaps need not be identical or, more properly stated, mirror-symmetrical to each other. However, preferably identical flaps are provided which are mirror images of each other. Thus, the first The description of the first flap is also the description of the second flap. Therefore , for the sake of clarity, a description of the second flap will be omitted. In the attached drawing and the corresponding elements are identified by the given reference number and the reference number prefixed by this reference number. Indicated by number. ) The flap 224 connects to the central absorbent pad 212 along a non-linear joining line 226. Related. As used in this application, the term "non-linear" Unlike lines, it relates to lines with various curves.

Flap 224 has a leading edge 278 spaced from joining line 226 . In Figure 1 In the example shown, the joining line 226 is concave with respect to the leading edge 278.

That is, the joining line 226 curves away from the distal edge 278. this In the example, the non-linear joining lines 226 and 226' and the seam 239 The region constitutes an absorbent means (central absorbent pad 212) narrower than the end regions. . In general, sanitary napkins that are narrower in the center area than the edge areas have a more even width. They are considered more comfortable than sanitary napkins.

The flap 224 is provided with a first imaginary bending axis 256 and a second imaginary bending axis 234. It is.

FIG. 2 shows a sanitary napkin 210 schematically showing a preferred construction for a sanitary napkin 210. FIG. 2 is a cross-sectional view of the kin 210 taken along line 2-2. As shown in Figure 2, the central absorber Pad 212 has an absorbent core 216. Central absorbent pad 212 and flap Both top sheets 224 have topsheets 214. The back seat 218 is With respect to the absorbent core 216 and the flap 224, the side opposite to the top sheet 214 It is located in In fact, the top sheet 214 covers one side of the flap 224. with the backsheet 218 forming the other side and the topsheet 214 forming the central suction side. The storage pad 212 forms one side, and the back sheet 218 forms the other side. Ru.

In the illustrated embodiment, the flap absorbent core 230 has a topsheet 214 and a backsheet. and the port 218. To simplify the structure, the flap absorber core A 230 extends over the entire napkin 210 and connects the absorbent core 216 and backsheet. 218.

Although this is the preferred embodiment primarily for structural reasons, flap absorption Body core 230 is not necessarily located between absorbent core 216 and backsheet 218. It doesn't have to be done.

The top sheet 214 and the back sheet 218 cover the entire circumference of the sanitary napkin 210. are joined at seam 239. The purpose of this seam is to It is the merging of various elements of a project into one. The top sheet 214 is Along linear joining lines 226 and 226', attachments not shown in FIG. The flap is fixed to the absorbent core 230 and the backsheet 218.

FIG. 2 shows adhesive attachment means of center pad adhesive 220 and flap adhesive. 236 is an indication. These adhesives are attached to the center pad release liner 222 and the flap. are each covered by a release liner 238. These adhesive mounting means is adapted to secure the sanitary napkin 210 to the crotch area of the underwear.

Topsheet 214 is liquid permeable and allows the wearer to use the sanitary napkin 210 when using it. placed in close proximity to the skin. The top sheet 214 has a flexible and soft texture. durable and non-irritating to the user's skin. Top sheets are conventionally used in these applications. Can be made from any material used. Used as top sheet 214 Non-limiting examples of suitable materials that can be used include polyester, polypropylene, and nylon. , and woven or nonwoven fabrics made of rayon and thermoplastic molded films. Shaped films are preferred.

A suitable molded film was granted to Mullan and Smith on April 13, 1982. U.S. Pat. No. 4,324,246 and Rubble and Ton on Aug. No. 4,342.314 to Puson, both patents The content disclosed in these patents is incorporated herein by reference to shall be incorporated. Formed film is permeable and non-absorbent to liquids It is preferable for the top sheet 214 because of its properties. Thus, contact with the body The surface of the formed film remains dry, providing greater comfort for the wearer.

In a preferred embodiment of the invention, the outer surface of topsheet 214 is treated with a surfactant. Ru. By treating the outer surface of the top sheet with a surfactant, the surface becomes hydrophilic. This allows the liquid to flow closer to the top sheet than if the surface were untreated. pass quickly. This is because menstrual fluid is not absorbed by the absorbent core 216. To reduce overflowing from the top sheet 214. The surfactant is Preferably, it is substantially evenly and completely distributed over the outer surface of the plate 214. child This can be done using any of the common techniques known to those skilled in the art. Ru. For example, surfactants can be applied by spraying, by padding, or by rolling. It can be attached to the top sheet 214 by using a photo roll.

In a preferred embodiment, the inner surface of topsheet 214 was in contact with absorbent core 216. Fixed in relationship. Because of this contact relationship, the liquid The sheet passes through the top sheet 214 more quickly than when it is not in contact with the sheet 216.

Adhesive is applied within the topsheet 214, preferably in limited spaced areas. By attaching the top sheet 214 to the surface, the top sheet 214 is placed in contact with the absorbent core 216. It is best to keep it in a good condition. Examples of suitable adhesives to use for this purpose include pencil AC manufactured by Rohm & ML\'s of Philadelphia, Lubania. Lil Emulsion 1fflE-1833BT and H, B, A of St. Ball, Minnesota. Includes acrylic emulsion WB 3805 manufactured by Neeler. these The adhesive is the same as that used to attach the surfactant to the outer surface of topsheet 214. It can be attached in any way.

Referring to FIG. 2, the absorbent core 216 has a top sheet 214 and a back sheet. 218. The absorbent core 216 is , providing a means for absorbing menstrual fluid. The absorbent core 216 is entirely compressed. It is flexible, conforms to its shape, and does not irritate the wearer's skin. The absorbent core is It may be made of any material used in the art for such purposes. Appropriate Examples of materials include tissue paper layers (e.g. paper cotton) and fibrous finely ground pulp (e.g. Arfelt), but fibrous, finely ground pulp is preferred.

The backsheet 218 is impermeable to liquids and thus absorbent core The user's clothes will not be soiled by the menstrual fluid squeezed out of the 216. Do it like this. Here, we will refer to any references used in the art for such purposes. materials can be used. Suitable materials include embossed or unembossed ports. Polyethylene film and laminated tissue paper.

At a location on the outer surface of the backsheet 218 that is approximately aligned with the absorbent core 216, there is a center pad. The pad adhesive 220 is coated. The center pad adhesive 220 Adhesive attachment for fixing the storage pad 212 to the crotch part of the panties consists of a means. to be accomplished. Here we refer to any connections used in the art for such purposes. Glues or glues can be used; pressure sensitive adhesives are preferred. A suitable adhesive is Centiuri Centiuri-A-305- manufactured by Adhesive Company and National Starch Company This is the instant lock 34-2823 manufactured by the company. As shown in Figure 2, Center pad adhesive 220 is approximately the same width as absorbent core 216, but width is not critical. Therefore, a person skilled in the art can easily select an appropriate width and length. Center/<・rad adhesion j 220 pressure-sensitive adhesives may dry out before use or stick to surfaces. It must be covered with a central release liner 222 to prevent it from dripping. 0゜This article refers to commonly used commercially available materials for such purposes. Any release liner available can be used. Non-limiting examples of suitable release liners include: BL30MG-A Silo Sox E110 and BL3 manufactured by Acrosil There is a 0MG-A Cyrox 4P10.

As can be seen from the above discussion, the central absorbent body 212 comes into contact with the body. A fluid permeable surface (represented by topsheet 214 in FIG. 2) and a The opposite liquid-impermeable surface (t < y in Fig. 2) 2181 is thus shown. ). gA+ Example (just one possible example) However, it should be understood that this is the preferred embodiment.

Other possible embodiments include placing the absorbent core before being placed on the sheet. , including embodiments that are essentially completely wrapped in a topsheet. The stage has sufficient integrity to exist on its own, while the surface is fluid permeable. and the other surface is added with a rubbing treatment to make it impermeable to liquids. It may also consist of a core (a 1° narrower central absorber pad 212 is effective). (It should be noted that Using Kin 210, the central absorbent pad 212 is maintained in close proximity to the body. This is for the purpose of The central absorbent pad 212 is thus kept close to the body. This must be very close to the body at the vaginal opening because Placed. In this case, the central absorbent pad 212 is configured such that menstrual fluid is A large amount of menstrual fluid can be absorbed before flowing along the guide 212.

Joining lines 226 and 226' connect flaps 224 and 224' along these lines. is associated with the absorber means (indicated by the central absorber node 212) and these lines constitute the boundary line between the absorber means and the flat tube. I understand. Furthermore, although the joining line is non-linear in this example, it can also be straight. I know it's good. Preferably, these joining lines are at the leading edge 278 and 278' and concave to the volume of the central absorber layer 212. . The absorbent means thus assumes a shape which is smaller in width at the center than at the ends.

This shaped shape closely matches the anatomical dimensions of the user's crotch region. child This makes the sanitary napkin more comfortable to wear and at the same time protects the user's legs. This can be made even more effective by preventing additional compression. Tip edge and A non-linear joining line that is convex to the volume of the central absorber pad can be used. However, these are not desirable.

The narrowest width of the central absorbent pad between bond lines 226 and 226' is about 1 cm to Preferably it is about 8 cm. The width at the ends of the central absorbent pad 212 is approximately 2 cm. m to about 9 am. The length of the central absorbent pad 212 is approximately 7.5 mm. Must be between 6 cm and approximately 38 cm.

The absorbent capacity of the central absorbent pad 212 is determined by the total amount of menstrual fluid expected to be absorbed. There is no need for the central absorbent pad 212 to have a narrow width. In addition to this, it is also good that it is relatively thin. Additionally, narrow and thin absorber means It is extremely comfortable for the user.

In the embodiment shown in FIGS. 1 and 2, topsheet 214 has flaps 224 and It is not a top sheet for 224'. In general, the flaps should be properly Does not require a topsheet to function, but prefers to use one. Yes. The topsheet of the flap is integral with the body contacting surface of the absorbent means. Alternatively, as shown, it may be a separate element, with the former being preferred. to All specific physical properties described above for top sheet 214 are applied to the top sheet of any flap. However, the flap The topsheet must be the same material as the topsheet associated with the central absorbent pad There isn't. In a preferred embodiment, the topsheet of the flap is a non-woven material. However, the topsheet associated with the central absorbent pad is preferably a molded film. stomach.

In the embodiment shown in FIGS. 1 and 2, backsheet 218 includes flaps 224 and Serves as a backsheet for 224'. The flaps require a barrier to function properly. a liquid-impermeable material (or, more generally, a liquid-impermeable material).

The backsheet of the flap is integral with the liquid impermeable surface of the absorbent means as shown. However, it may be a separate element, with the former being preferred.

All specific physical properties described above for backsheet 218 are applied to the backsheet of the desired flap. Those skilled in the art will understand that the entire flap 224 and You can easily select the size. Preferably, the width of sanitary napkin 210 is from about 10 cm to about 23 cm at the farthest point between edges 278 and 278'. be. Preferably, the length of the flap 224 is parallel to the longitudinal axis of the sanitary napkin. It is about 7.6 cm to about 18 cm in the horizontal direction.

Flap adhesive 236 is applied to the outer surface of flap 224 adjacent tip edge 278. It is coated.

Flap adhesive 236 attaches flap 234 to the panty as described below. Once wrapped around the edge of the crotch area, this will help keep it in place. The adhesive attachment used is instrumental. The material used for the center pad adhesive 220 Any adhesive can be used as the flap adhesive 236. Furthermore, flap adhesive 2 36 is covered with a removable flap release liner 238. central pad Any release liner material used for release liner 222 can be used as a flap release liner. It can be used for Na238.

As shown in FIGS. 1 and 2, the topsheet 214 extends along the seam 239. is fixed to the book sheet 218. Seam 239 is glued, crimped, or heat sealing, as commonly used in the art for this purpose. It may be formed by any suitable means.

Seam 239 is shown extending around the circumference of sanitary napkin 210.

This is preferred because of its simple structure. (other elements that integrate the various elements of the device) means may be used. ) Topsheet 214 may be formed using any of the techniques used to form seam 239. is secured to the backsheet 218 along the bond lines 226 and 226' by any suitable technique. Can be determined.

Flap 224 includes a first bending axis 256 and a second bending axis 234. these The two bending axes of the flap 224 allow the flap 224 to be bent during use, as explained below. Can be formed into walls. These bending axes are formed by separate hinge lines. It can be made of flexible flat material that can be bent around any desired line. 224 along a continuous range.

The first bending axis 256 allows the flap to bend along the first bending axis 256. It is made to be able to be used. The bending direction of the flap is such that the sanitary napkin 210 In the form shown, it is upward. More generally, the bending direction is The portion of flap 224 including 278 extends over its entire length as shown in FIG. position and towards the body-contacting fluid-permeable surface of the absorbent means (first 2 by the portion of the topsheet 214 aligned with the absorbent core 216) and away from the liquid-impermeable surface of the absorbent means (as shown in FIG. The first bending axis 2 is arranged in an arc (as shown by the aligned portions of the backsheet 218). 56 as the center.

The second bending axis 234 allows the flap to bend along the second bending axis 234. It is made to be able to be used. The direction of bending is such that the sanitary napkin 210 is in the form shown in FIG. If it is, it is downward. More generally, the direction of bending is such that the leading edge 278 The portion of the flap 224 that includes the starting towards the liquid-impermeable surface of the absorbent means (central absorbent pad 212 The portion of the backsheet 218 that is aligned with the absorbent core 216 to constitute (as shown in FIG. 2) and away from the body-contacting liquid-permeable surface of the absorbent means. (as shown in FIG. 2 by the portion of topsheet 214 aligned with absorbent core 216). ) The direction is such that it rotates around the second bending axis 234 in a circular arc.

The first and second bending axes can be attached in a variety of ways. preferred method Shown in FIGS. 1 and 2. In the illustrated embodiment, the material of construction of flap 224 is Wrap 224 is selected to be extremely flexible throughout. bending axis Lines 256 and 234 are in this case a single unique line as shown in FIGS. Rather than being a particular structure, it represents an essentially infinite number of pairs of axes. child The configuration makes the sanitary napkin 210 suitable for many different sizes of underwear while being worn. Can be adapted to fit the anatomy described below during use It is particularly preferred because it can be easily adjusted.

The overall flexibility of the flap 224 allows for a natural crotch edge of the panty. The flap 224 can be attached to the crotch edge of the panty without having to change where it passes through. Can be positioned around. (and then flatten the crotch edge of the panties) There is no need to extend it along the second bending axis of the strip. Furthermore, the edge of the crotch part of the panties When the sanitary napkin is in place for use, it is best Also, a high wall (described below) is formed, which is the largest barrier to menstrual fluid flow. constitute a significant barrier.

In the embodiment of the sanitary napkin 210 shown in FIGS. 1 and 2, the structure of the flap 224 is If the flap is bent through 90°, the construction material is Fear's Towing - PCA carving manufactured by Albert Instrument Co. The resistance measured with a wire bending tester is about 200 g or less, more preferably about 50 g or less, Most preferably it is selected to be about 25g or less. these values is a section of flap 7.6 cm long (this is the bottom edge of the inclined plate of the tester). (maintained 2.5 cm above the It will be done.

Generally speaking, an axis is generally considered to be a linear element. Book bending The axis is also generally straight, but the material that makes up the flap as a whole Flexible enough to allow the wrap to be easily bent and folded by hand Therefore, the bending axis may become non-linear due to the influence of external forces. As shown in Figure 1 , the first bending axis 256 is immediately proximate to the joining line 226. The first bending axis 256 is , the joining line is actually the outer edge of the sanitary napkin (this edge is indicated by seam 239). may intersect the bond line 226 at the point of contact with the In general, This occurs only when the first bending axis 256 and the joining line 226 touch or coincide. It will be done. However, due to external forces applied during use, the first bending axis may move toward the joining line. and in some cases these two lines may touch or coincide. It should be understood that there is.

A liquid-permeable topsheet, a liquid-impermeable backsheet, and a topsheet. It has a central absorbent pad consisting of an absorbent core placed between the backsheet and In a sanitary napkin in which a flap extends from each longitudinal edge of the central absorbent pad. , the joining line between each flap and the longitudinal edge of the central absorbent pad is straight; , a bending axis is provided in the body of each flap, and the length of each flap and central absorbent pad is located at the line of linear junction with the hand edge and within the body of the flap. The sanitary napkin can be made to bend preferentially at the bending axis, Although the sanitary napkin is distinctly different from the napkin of the present invention, Functions similarly to a napkin.

Those skilled in the art will understand the detailed shape of flap 224 as well as the overall shape of sanitary napkin 210. Choices can be made without undue experimentation. In the embodiment shown in FIGS. 1 and 3, the flap are arranged symmetrically along the longitudinal axis of the sanitary napkin. This is preferred Although a preferred embodiment, it is not a required design feature. The flap is As a whole, they are mirror images of each other. It is preferable to have mirror symmetry like this. Although desirable, this is also not a required design feature.

Furthermore, the sanitary napkin shown in FIGS. 1 and 2 has a flap that is attached to the top of the sanitary napkin. This embodiment is formed integrally with a push sheet and a back sheet. This is also preferable Although this is an easy configuration method, it is also not a required design feature. flap and the central absorbent body means, which are combined into the resulting sanitary napkin. using techniques well known to those skilled in the art so as to function essentially equivalently to the embodiments illustrated in this application. May be joined.

In use, the sanitary napkin of the present invention meets all well-known requirements for such purposes. It can be held in place by any suitable support means. worn around the user's torso You can use a belt that is However, as explained below, It is very preferable to place underwear in a panty, which is also known as panty. this bread The tee connects the front section 240, the rear section 242, and the front section 240 and the rear section 242. It consists of a mating crotch portion 244. The crotch portion 244 has two side edges 246 and 246. ', and a central crotch portion 248.

The sanitary napkin of the present invention, designated by the reference numeral 210 in FIGS. 1 and 2, includes a release liner. 222, 238, and 238', then put a sanitary napkin on the panties. It is used by arranging it as shown in Figure 9.

The center of the central absorbent pad 212 is such that one end of the central absorbent pad 212 is extending toward the front section 240 and the other end toward the rear section 242 of the panty. The state in which the grip sheet 218 is in contact with the inner surface of the central crotch portion 248 of the panty is extended. It is placed at the crotch portion 244 of the panty.

Center pad adhesive 220 maintains center absorbent pad 212 in place. centre The distal end portions of the wraps 224 and 224' extend along the second bending axes 234 and 234'. fold around side edges 246 and 246' of the panty, respectively, by bending be caught. Flap adhesive 236 and 236' attaches flaps 224 and 224'. Fix it in this position. Thus, each of flaps 224 and 224' With the portion of the tee including the side edges 246 and 246' placed between them. Folded onto themselves.

Many advantages are obtained by using the sanitary napkin of the invention. flap 224 and 224' are! (crotch portion 244 and each edge 246 and 246' The wire is wound around the wire as shown in FIG. Encircle the crotch part of the panties like this This prevents menstrual fluid from coming into contact with the center of the crotch area of the body.

Thus, the central crotch part of the /kunti remains clean.

There are two other advantages. One of these advantages is that the second bending axes 234 and 234 The part of the flap that includes ′ forms an excellent gasket-like seal against the body. That's what it means. Another advantage is that the central absorbent pad, such as central absorbent pad 212, This means that the steps are maintained in a good contact relationship with the body.

Typically, the crotch edges of panties contain elastic material. wear panties Then, the elastic body at the edge of the crotch area is affected by the energy inside the elastic body and by wearing the panties. , which generates a force upwards, toward the body. Second bending axes 234 and 234 If a second bending axis such as ' is placed between the body and the edge of the crotch part of the panty, The upward force generated by the crotch edge of the panty causes the flap, which includes the second bending axis, to Press the part tightly against your body. This creates a bend between the flap and the body. A gasket-like seal is formed along the axis. Use this as a sanitary napkin and Figure 10 is a partial coronal view showing the panties of Figure 8 worn by a user. . (A coronal view is a plane passing through the longitudinal axis of the body.) A gasket-like seal is , to help prevent menstrual fluid from crossing the second bending axis, and to prevent menstrual fluid from crossing the second bending axis. prevent dirty clothing from getting dirty. Snug the flap along the second bending axis Another advantage obtained by pressing with absorbent means (central absorbent pad) This means that the body is pressed very close to the body and matches the shape of the body. child This is also shown in FIG. Maintaining the central absorbent pad against the body is known as "good contact with the body".

Good contact with the body is beneficial as it constitutes a barrier to the lateral flow of menstrual fluids. It is advantageous. In the absence of such a barrier, menstrual fluids can flow quickly along the topsheet. It tends to flow quickly, so the absorbent core has insufficient time to absorb it. do not have.

Naturally formed punching means that you can use a sanitary napkin with your panties. A wrinkle is formed along the transverse axis of the sanitary napkin by first placing it on the It is to be able to do so. (The lateral axis of a sanitary napkin spans the ``crotch area'' of the napkin. and extends substantially parallel to line 2-2 in FIG. ) These naturally formed punchins that the sanitary napkin is essentially straight along its longitudinal axis; and the body anatomy on which the sanitary napkin is placed is essentially rUJ-shaped. Depends on the situation. (The longitudinal axis of the sanitary napkin is from one end of the central absorbent means to the other) 1 and is approximately perpendicular to line 2--2 in FIG. ) Thus, sanitary naps As soon as the kin is in place, its shape changes to an essentially straight shape. to a "U" shape along its longitudinal axis.

This change in shape causes wrinkles to form along the transverse axis of the sanitary napkin, and these The majority of wrinkles are located at the most curved part of the body, the crotch area.

Force-formed punching is caused by the movement of the user's legs in the lateral or longitudinal axis. A wrinkle that forms in a sanitary napkin along either of its adaxial lines.

Sanitary nappies formed by punching that is formed naturally and punching that is formed by force. Kin's creases are known as flow channels. This is because the body stretches along the wrinkles. If there is no contact with the menstrual flow along the troughs formed by these wrinkles. This is because the body can flow easily.

The sanitary napkin of the present invention has many advantages because the flap bends at the first bending axis. provide the benefits of Detailing the benefits offered: (1) Due to the naturally formed punching, the flow essentially only flows into the central absorbent pad. (2) that a channel is formed and not in the volume of the flap; The sanitary napkin of the present invention has a force-formed pad before the flow channels are formed. that it can withstand a lot of pinching; (3) If the force-formed punching is rough enough to form a flow channel, Even in cases where the channels formed are essentially confined to the central absorbent pad. (4) The punching formed by the force is so large that the flow channel Even if the central absorbent pad and flap are formed on both the flap, menstrual fluid will - It means that it is restrained so that it does not leak beyond the second bending axis of the tube.

These four advantages are due to the fact that the sanitary napkin of the present invention is provided with a barrier means or wall 107. It is obtained because of the bending and bending along the bending axis. In the crotch area of women , the crotch is substantially trapezoidal, and the central region of the crotch at the layer frontage is the base of the trapezoid. There is an anatomical feature that

When using the sanitary napkin of the present invention such as the embodiment shown in FIGS. 1 and 2, Due to the anatomical characteristics of the crotch area, the sanitary napkin is forced upward at the first bending axis. can be bent by force. As a result, the sanitary napkin can be forming a wall on each side of the central absorbent pad that extends from one bending axis to a second bending axis; . Thus, in use, the sanitary napkin of the present invention requires the user to maintain an upright position. When taking it off, it wraps around the crotch edge of the panties (246 and 246'). The plane formed by the second bending axes (234 and 234') is the first bending axis (25 6 and 256').

The naturally formed punching of the sanitary napkins of the present invention substantially essentially no flow channels are formed in the walls. Any Although not bound by the theory of The energy that creates these flow channels is transferred across the central absorber pad. It is believed that the flow channel will be extended. This means that the flow channel The flow channel continues until it reaches the first bending axis (the flow channel does not extend beyond this point). This is because the first bending axis releases energy that stretches the flow channel. It is considered. (So, the flow channel has a second track between the flap and the body.) does not reach the gasket-like seal formed at the axis of the remains intact. Gasket-like seal forms a dam and restricts the flow of menstrual fluid Cut off. Menstrual fluid is then absorbed by the absorbent core.

The sanitary napkin of the present invention has a force-formed multilayer structure before the flow channels are formed. Can withstand many punches. This is because the punching formed by force is The energy transferred to the raw napkin causes the wall to rotate about each first bending axis. This is because there is a tendency to In the absence of such rotation, the flow channel It is formed.

Even if the punching formed by the force is large enough to form a flow channel , the channels are substantially confined to the central absorbent pad. This is a naturally formed The same principle applies to the punching that forms flow channels only in the central absorbent pad. Depends on the reason. Therefore, the gas reactor-sotho-like seal remains intact, forming a dam and lunar The flow of fluid is blocked until it is absorbed by the absorbent core.

The punching formed by the force flows to both the central absorber A) rad and flap. Even if large enough to form a channel, menstrual fluid will flow through the walls 107 and flaps. is restrained from leaking beyond the second bending axis. This kind of flow Channels tend to break gasket-like seals. However, the wall itself forms a barrier to the flow of the menstrual fluid so that it does not leak beyond the second bending axis. be restrained as if Menstrual fluid can be released into gas when the user is in an upright position. In order to break the seal and leak, it must flow up the wall against gravity. Must be. Thus, the wall itself restricts the flow of menstrual fluid.

Generally speaking, the sanitary napkin of the present invention essentially has a flow channel in the center. Since it is formed only on the absorbent pad, the gasket-like seal remains intact. mosquito Thus, menstrual fluids cannot flow past the gasket-like seal. But long If the punching formed by the force is large enough to break the gasket-like seal, The walls themselves restrict the flow of menstrual fluid.

In FIG. 10, flap adhesive 236 is applied to the edge of the panty and its "outer" surface. It is important to note that the injuries are shown as touching. this is one preferred method of securing sanitary napkins to panties; The adhesive will stick to the panty as long as part of the flap extends around the edge of the panty. Only the edge of the tee and its "inner" surface may be in contact, or its "inner" and "outer" surfaces may be in contact. may come into contact with both.

The sanitary napkin of the invention can be equipped with two flaps each forming a wall during use. It was explained as a position. Although these embodiments are highly preferred, they do not have flaps. Devices with no flap and devices with only one flap are also conceivable. this one hula The top is associated with the central absorbent means along a non-linear joining line. This flap has at least two, preferably four, bending axes; When the flap is fully folded around the crotch of the panty, both of the aforementioned walls It is possible to form a direction.

In this case, the flap is inserted in the middle along a non-linear joining line opposite to the joining line mentioned above. Associated with central absorber means.

In the embodiment of the sanitary napkin of the invention shown and described above, the adhesive attachment The means is present near the distal edge of the flap and is aligned with the central absorbent pad.

These elements designed to securely hold the sanitary napkin in the crotch area of the underwear is a highly desirable element. the above-mentioned adhesive without retracting from the said position. Attachment may also include embodiments of the invention that effectively eliminate one or more of the means. It can be argued that this is a useful, new and effective device.

The embodiments shown in FIGS. 1 and 2 may include adhesive attachment by one or more of the means. The above can easily be adapted as an embodiment of the present invention effectively eliminated.

For example, the center pad adhesive 220 (and, of course, the associated center pad release liner 222) from the sanitary napkin 210 shown in FIGS. 1 and 2. be able to. In use, this variation allows the central absorbent pad 220 to Similar to the non-variant embodiment except that it is not secured to the inner crotch area of the tee. It is placed in the inner crotch area of the panty. The flaps 224 and 224' are as described above. Secure around the elastic edges of the panties with flap adhesive 236 and 236' as shown. Can be determined. The user may wear panties with associated sanitary napkins in the above-described embodiment. be worn in the same way. Flap adhesive 236 and 2 in cooperation with the elastic edge of the panty 36' holds the alternative sanitary napkin in place.

Similarly, flap adhesives 236 and 236' (and release liners 238 and 2 38'), the sanitary napkin 210 can be modified by eliminating only . A modified sanitary napkin is secured to the crotch area of the panty with central pad adhesive 220. The folded flap is simply folded around the elastic edge.

Similarly, hygiene by eliminating all flap adhesives and center pad adhesives Napkin 210 can be modified. In use, such modifications The sanitary napkin is a sanitary napkin with a It is only kept in place by cooperation.

FIG. 3 shows that the top sheet 40 constitutes the central pad 105 and that the peripheral portion 1 03 shows the embodiment folded upwards. The topsheet is around the core 48, e.g. For example, it has two layers bonded to each other by adhesive or ultrasonic fusion bonding. to The free edge 109 of the wall 107 formed by the top sheet rests on the top of the absorbent core 48. , as shown in FIG. It is located. A contraction member in the form of an elastic body 77 is connected to the free edge 109. ing.

In the embodiment of FIG. A wall 107 is formed by the back sheet 42 connected to the top sheet 40. ing.

In the embodiment shown in FIG. It is formed by disposed formstrips 100. Hygiene in Figure 5 As shown in FIG. 10, the padkin is provided with wings 43 for connection to the user's underwear. I'm being kicked.

In the embodiment of FIG. 6, the wall 107 is between the top sheet 40 and the back sheet 42. It is formed by a flexible cantilever beam 102 connected to.

Figure 7 shows the napkin being shaped (i.e., the napkin is elastically contracted) before being placed on the wearer. Fig. 3 shows the structure of the crotch region of yet another embodiment of the sanitary napkin according to the present invention when FIG. The absorbent core 44 has a first thin paper layer 50 and a second thin paper layer 5. 2. The absorbent layer 48 is shown completely encased in the absorbent layer 48. The absorbent core 44 is The top sheet 38 and the back sheet 42 are arranged between the top sheet 38 and the back sheet 42. Both sheets 42 extend beyond the side edges 46 of the absorbent core 44 and have side flanges. 58. The juxtaposition area of the top sheet 38 and the back sheet 42 is They are adhesively fixed to each other with an adhesive 88.

One barrier means 62 is provided between the outer edge of the flap and the side edge 46 of the absorbent core 44. shown as being formed by securing the elements to the topsheet 38. be.

The proximal edge 64 of the barrier means 62 connects the elements comprising the barrier means to the topsheet 38. It is formed by fixing with adhesive 92. The spacing elastic member 77 is a barrier. into a tunnel formed by folding the ends of the elements forming the means over themselves; The spacing elastic member 77 is elastically attached to the barrier means 62 by means 94. has been done.

The leading edge 66 of the barrier means is brought to the top by the elastic gearing action of the spacing elastic member 77. spaced from the top surface 40 of the sheet, thereby allowing the channels 96 to Shaped by at least the proximal edge 64, the distal edge 66, and the inner surface 68 of the barrier means 62. will be accomplished. Channel 96 is connected until sanitary napkin 210 is removed from the wearer. , and is shown ready to hold and contain body fluids.

The top sheet 38 has a flexible and soft feel and is non-irritating to the wearer's skin. do not have. Additionally, the topsheet 38 is liquid permeable, allowing liquids to easily penetrate its thickness. I can pass. Suitable topsheets include porous foam, reticulated foam, and porous plus. natural fibers (e.g. wood fibers or cotton fibers), synthetic fibers (e.g. polyester fibers), ester fibers or polypropylene fibers), or blends of natural and synthetic fibers. It can be manufactured from a wide variety of materials. Preferably, the liquid within the absorbent core 44 is Made from hydrophobic material to prevent contact with skin.

Particularly preferably, the top sheet 38 is made of Approximately 1.5 denier, such as Hercules 151 type polypropylene sold by Made from staple length polypropylene fibers.

As used herein, the term "staple length fiber" Relating to fibers having a length of at least about 0.65 inches.

Many manufacturing techniques can be used to manufacture topsheet 38. For example, top sea The sheet 38 may be a woven fabric, a non-woven fabric, or a spunbond material. It may be subjected to a carding process or a carding process. useful The top sheet 38 is carded and has a carding process which is suitable for those skilled in the art of fabrics. The sheets are thermally bonded by means well known to those skilled in the art. Preferably, the top sheet 38 The basis weight is about 18 g/m2 to about 25 g/m2, and the minimum pull in the dry state is The tensile strength is at least about 400 g/cm in the machine direction and tensile strength in wet conditions. The tensile strength is at least about 55 g/co+ transverse to the machine direction. .

The absorbent core 44 is compressible throughout, conforms to its shape, and conforms to the wearer's skin. Any means that is non-irritating and capable of absorbing and retaining body fluids is best. . A preferred absorbent core 44 has a first side and a second side on opposite sides, and has an absorbent layer 48 and a second side. and a first tissue layer 50 and a second tissue layer 52. The first tissue layer 50 and the second The thin paper layer 52 overlaps the main surface of the absorbent layer 48 and covers the first surface and the absorbent core. Both sides of the second side are formed.

The absorbent layer 48 can come in a wide range of sizes and shapes (e.g., rectangular, hourglass, etc.). It can be manufactured using absorbent materials such as finely ground wood pulp, commonly referred to as air felt. It can be made from a variety of liquid absorbent materials commonly used in storage articles. other Examples of suitable absorbent materials include paper cotton, absorbent foam, absorbent sponge, superabsorbent Polymers or any equivalent material or combination of these materials are included.

However, the overall absorbent capacity of the absorbent layer 48 is limited by the intended use of the sanitary napkin. It must be comparable to the body fluid design load for use. Furthermore, the absorbent layer 4 The size and absorbency of 8 can be varied to suit the wearer.

The size, shape, and configuration of absorbent layer 48 can vary (e.g., The layers may have varying thicknesses, or hydrophilicity gradients, or may be made of superabsorbent materials or composites. (preferably contains synthetic fibers).

The first tissue layer 50 and the second tissue layer 52 improve the tensile strength of the absorbent core 44. to prevent the absorbent layer from tearing, clumping, or balling when wet. reduce the tendency to Furthermore, the first tissue layer 50 and the second tissue layer 52 are absorbent. This improves side leakage of body fluids, thereby directing body fluids across the absorbent layer 48. Then distribute it evenly. To make the first tissue layer 50 and the second tissue layer 52 Although many materials and manufacturing techniques can be used, 0.5 inches (12.8 mm) of water Air permeability at a differential pressure of approximately 30.5 m3 per square foot per minute Satisfactory results have been obtained with tissue paper sheets at a rate of 100 cubic feet per minute. 1st Tissue layer 50 and second tissue layer 52 preferably completely overlap absorbent layer 48. Although they match, they may differ in size and shape, or may be omitted altogether. stomach.

The absorbent core 44 is overlaid on the backsheet 42 and preferably Attachments, such as attachment means, which are well known in the art, are attached by means (not shown). It is better to have For example, the absorbent core 44 may include a uniform continuous adhesive layer, a predetermined Backing with a patterned layer of adhesive or an array of discrete lines or dots of adhesive. It is preferable to fix it to the seat 42. I know that I can get satisfactory results. The adhesive used is manufactured by Eastman Chemical Products Co., Kingesport, Tennessee. is an adhesive manufactured by and sold under the trademark Eastbond A-3.

The backsheet 42 is impermeable to liquids and is preferably made of thin plastic. manufactured from transparent film, but other flexible and liquid-impermeable materials can also be used. good.

The backsheet 42 allows body fluids absorbed and contained in the absorbent core 44 to Avoid getting wet items such as underwear that come into contact with sanitary napkins. Preferably, The thickness of the I 51 mm (2.0 mil) polyethylene film) Lt, flexible and liquid-proof. Other transparent materials may also be used. As used herein, “possible” The term "flexible" refers to materials that are flexible and easily conform to the general shape and contours of the human body. do.

A suitable polyethylene film is manufactured by Monsando Chemical Co., Ltd. It is sold under the trademark Lum. The back sheet 42 is given an appearance similar to cloth. It has an embossed and/or matte finish.

Additionally, the backsheet 42 allows steam to escape from the absorbent core 44; Impermeable to body fluids.

Topsheet 38 and backsheet 42 may be related to each other in any suitable manner. There is. As used herein, the term "related" refers to Topsheet 38 by attaching sheet 38 directly to backsheet 42 The top sheet 38 is attached to an intermediate member. By attaching this intermediate member to the backsheet 42, the topsheet This includes a configuration in which the seat 38 is indirectly joined to the backsheet 42. In a preferred embodiment , top sheet 38 and back sheet 42 are attached by means of attachment such as adhesive 88. or any other attachment known in the art may be joined directly to each other around the periphery by means of has been done. For example, an even, continuous layer of adhesive, or adhesive in a predetermined pattern. An array of discrete lines or dots of layers or adhesive can be used. side flats The flexibility of the pipe 58 must be very large.

The side flaps 58 are the portion of the sanitary napkin between the periphery and the absorbent core 44.

Thus, in the embodiment of the invention shown in FIG. A backsheet 42 and a top extending from side edges 46 of 4 along these side edges. It is formed from an extension of sheet 38.

Each barrier means 62 has a proximal edge 64, a distal edge 66, and an inner surface 68 and an outer surface 70. It is a flexible member. As used herein, the term flexible The term relates to materials that are flexible and easily conform to the general shape and contours of the body. Furthermore, apart When the barrier means 76 includes a spacing elastic member 77, the barrier means 62 prevents bodily fluids from being Channels 96 are formed to constrain, contain, and retain within the article. Contraction such that the leading edge 66 is sufficiently spaced from the top surface 40 of the topsheet. It must have sex. The barrier means 62 is made of polyester, rayon, nylon, foam, plastic film, molded film, and elastic foam. Can be manufactured from a wide variety of materials.

Many manufacturing techniques can be used to manufacture the barrier means. For example, the barrier means 62 may be It may be made of cloth or non-woven fabric, or it may be spunbonded. The material may be coated or carded. Especially preferred barrier hand The step 62 is made of an unfinished or liquid impermeable material. Especially preferred The new material is a material manufactured by Crown Zellerbach as Celestra. be.

As shown in FIG. 7, the barrier means 62, and more particularly the proximal edge 64, inside the flap, more preferably adjacent to the flap.

The term "inside" refers to the respective edges (226, 226') toward the centerline 36.

Barrier means 62 is arranged to more effectively restrict body fluid flow. Ru. The barrier means 62 preferably extends between the outer edge of the flap and the longitudinal direction of the sanitary napkin. and the center line 36.

The proximal edge 64 and the distal edge 66 are in spaced relationship with each other and are This constitutes the width of the step 62. The proximal edge 64 and the distal edge 66 are in a parallel relationship. It may be a non-parallel relationship, or it may be a straight line relationship. . Additionally, the cross-section of the barrier means 62 may include circular, square, rectangular, or any other shape. It is preferable to have various cross sections. Preferably, the proximal edge 64 is separated from the distal edge 66. Barriers of equal width, spaced apart in a parallel and linear relationship A stage 62 is constructed.

In the sanitary napkin embodiment of FIG. 7, barrier means 62 is joined to topsheet 38. It is. The term "joined" refers to the attachment of the barrier means 62 to the sanitary napkin. barrier means 62 is a separate element and the proximal edge 64 is attached directly or indirectly to the topsheet 38 (i.e., is integral with the topsheet 38). ) embodiments, or where the barrier means 62 is made from the same element or material as the topsheet 38; and the proximal edge 64 is a continuous, undivided element of the topsheet. (i.e., is integral). In a variant, the barrier means 62 8. Back sheet 42, absorbent core 44, top sheet 38, or sanitary napkin or any combination of these or other elements. The fruit shown in Figure 2 In the embodiment, the barrier means 62 is integral with the topsheet 38. Integral barrier means 6 2 is preferably a single strip of material secured to the topsheet with adhesive 92. The leading edge 66 allows the end of the material to be folded back onto itself. formed by.

The distal edge 66 is preferably located inside the proximal edge 64 to provide additional flow resistance. constitute an effective barrier.

Distal edge 66 is maintained inside proximal edge 64 by adhesive means 78 . child This is to prevent the relationship between the distal edge 66 and the proximal edge 64 from being reversed. It's a good thing. Distal edge 66 may be located at other locations with respect to proximal edge 64 in variations. However, such a position is not a preferred position.

Leading edge 66 is preferably spaced from top surface 40 of topsheet 38. at least the central area of the sanitary napkin so that it is fixed to any other element not present. The leading edge 66 preferably includes a channel 96 that enhances the containment of the article. spaced from the top surface 40 of the topsheet 38 so that a barrier means 62 can be formed. It is being

As used herein, the term "spaced" refers to the distal edges. portion 66 against top surface 40 of topsheet 38, in some cases taking one or more positions including taking a position adjacent to the top surface 40; Includes possible examples. Distance between leading edge 66 and top surface 40 of topsheet 38 The leading edge 66 is spaced as widely as possible from the topsheet. from the leading edge 66 when the top sheet 3 is positioned (in the retracted position). Measured along the line drawn to the nearest point of 8. Preferably, the leading edge 66 are spaced apart from the topsheet 38 by a height of at least about 2 mm; Preferably, they are spaced apart by about 5 mm to about 10 mm.

Channel 96 includes at least proximal edge 64 and distal edge 66, and barrier means. It is formed along the inner surface 68 of 62. Channel 96 has body fluids at the top. This creates a barrier to body fluid flow as it attempts to move across the seat 38. Form.

The barrier means 62 may additionally include absorber means secured to or within the barrier means. It is good that it is provided. The absorbent means absorbs body fluids that come into contact with it. It includes this. The absorbent means is any material capable of absorbing and retaining liquid. It may be of any size, shape, form, or absorption capacity. stomach. The absorbent means fits along the inner surface 68 or within the barrier means 62. It is best to have it positioned at the same level. Preferably the absorber means is an integral barrier means. along the entire length and width of the inner surface 68 of the barrier means 62. It is a fixed air felt layer.

Additionally, the barrier means 62 is preferably liquid-impermeable to prevent passage of body fluids. good. The liquid-impermeable barrier means 62 retards the movement of liquid through the barrier means 62; This further increases the resistance of the barrier means to leakage.

Barrier means 62 may be any suitable material known in the art, such as selectively disposing of barrier means. Liquid impermeability can be achieved in any way or by fixing another material to the barrier means. It's good that it's given to you.

A spacing means 76 for separating the leading edge 66 from the top surface 40 of the topsheet is provided to prevent leakage. A channel 96 is formed along the barrier means 62 to provide resistance to The barrier means 62 may be geared, constricted, supplemented, shortened, or otherwise acted upon. It is any member that

As shown in FIG. 7, the spacing means 76 preferably has a distal end inside the barrier means 62. It has a spaced apart elastic member 77 fixed adjacent to edge 66 . The spacing elastic member 77 is , preferably in the normal unconstrained configuration, spaced apart elastic members 77 in a freely retractable state so as to effectively retract or gear the means 62; It is fixed to the barrier means 62.

As shown in FIG. It is associated with the barrier means 62 by securing at steps 94 . Spacing elastic member 77 may be fixed to the barrier only near its ends, but the spacing elastic members 77 Preferably, the entire length is fixed to the barrier means 62. The elastic attachment means 94 is provided in the present application. is preferably conducted by Adhesives, Inc. of Wisconsin. Adhesives made with hot melt adhesives, such as those sold as Adhesives 581. It is an adhesive bead.

A suitable spacing elastic member 77 is an elastic strand with a cross section of 0.18 mm x 1.5 mm. , trademark of L-1900 rubber compound from Rubber Company of Virginia. It is made from natural rubber available in Other suitable spacing elastic members 77 include An elastic tape sold under the trademark 9211 by Scotland Company, Carolina. It is best if it is made from natural rubber such as rubber. Furthermore, the spacing elastic member 77 is It may be made of any heat shrinkable material known in the art. other suitable elasticity Materials include films, polyurethane films, foams, and molded elastomers. A wide range of materials known in the art are included, including:

Furthermore, the spacing elastic members 77 can take many forms. For example, separation elasticity The width of the member 77 may vary and the spacing elastic member may be made of a single strand. It can be made of several parallel or non-parallel strands of elastic material. Often, the spacing elastic member 77 may be linear or curved. Change In addition, the spacing elastic members 77 may be removed in any of several ways known in the art. It is preferable that the barrier means 62 be attached to the barrier means 62 by law. For example, the spacing elastic member 77 , may be bonded to the barrier means 62 using various bonding patterns and may be bonded to the barrier means 62 using a variety of bonding patterns. Alternatively, the spacing elastic members 77 may be simply glued to the barrier means 62. You can stay there.

A spacing means 76 for spacing the leading edge 66 from the top surface 40 of the topsheet is , in a variant, may consist of several other elements. For example, each barrier means 62 Adjuvant means may be arranged internally or externally. The supplement means tops the distal edge 66. It must be sufficiently rigid to be spaced from the top surface 40 of the seat. supplementary hand Suitable materials for the corrugations include foam, woven fabric, batt, and polyethylene film molding. lum, spray glue, foamed polyester, or Carolina Foamed Fabric This includes high-loft materials such as those manufactured by Xx Corporation.

Furthermore, the spacing means 77 compares the length of the leading edge 66 with the length of the edge of the sanitary napkin. This constitutes a means for shortening the length. The leading edge 66 has a crease line or It can also be shortened by adding pleats. Fold lines and pleats , by any retaining means known to those skilled in the art, such as adhesive or heat sealing.

In a variant, one section is removed from the distal edge and the edges are brought together and butted. It is preferable to form a joint or joint. Additionally, the leading edge 66 is designed to ensure that the sanitary napkin is flat. The distal end portion 66 is located at a position different from the position where the distal end portion 66 is located when the distal end portion 66 is in the expanded state. The predetermined length of the edge portion 66 can also be shortened by attaching it to the top sheet 38. can be done. Other shortening techniques known in the art may also be used.

Adhesive for securing the ends of the barrier means 62 in close proximity to the lateral edges of the sanitary napkin. The means provide the wearer with more comfortable wearing, and the mounting means provides a barrier during and during use. The tip edge 66 of 62 should not be turned upside down. Being upside down means Typically, when the sanitary napkin is placed on the wearer, the leading edge 66 located on the inside is defined as returning to the outer envelope. In a preferred embodiment, such an adhesive The means are arranged in the front and back regions of the sanitary napkin. The remainder of the barrier means 62 The section is not secured, leaving the leading edge 66 free.

Adhesive means 78 is preferably manufactured by Adhesives, Inc. of Wisconsin. Hot melt adhesives such as those sold by Horated as Adhesives 581 This is an adhesive bead 79 made of glue.

2t 5y Continuation of front page (81) Designated countries EP (AT, BE, CH, DE.

DK, ES, FR, GB, GR, IE, IT, LU, MC, NL, PT, S E), CA (BF, BJ, CF, CG, CI, CM, GA, GN, M L, MR, SN, TD.

TG), AU, BB, BG, BR, CA, CZ, FI.

HU, JP, KP, KR, LK, MG, MN, MW, NO, NZ, PL, R O, RU, SD, SK, UA, US

Claims (13)

[Claims] 1. A circumference consisting of a first surface, a second surface, two longitudinal sides and two lateral sides. an absorbent core having a top sheet overlapping a first surface of the core; a liquid-impermeable backsheet associated with said topsheet, overlapping a second side of said topsheet; , and said length for restraining liquid from moving in the direction of said lateral sides. In a sanitary napkin having a barrier means arranged along the hand side, said barrier means The wall means constitutes a wall having a free edge above the plane of the first side of the core, and The free edge is disposed within the periphery of the core at least during use of the sanitary napkin. A sanitary napkin that is characterized by: 2. The backsheet extends beyond the perimeter of the core and attaches to the garment during use. forming a flap for attachment, the barrier means being adjacent to the periphery of the core; The sanitary napkin according to claim 1, characterized in that the sanitary napkin is connected to the flap by hmm. 3. A circumference consisting of a first surface, a second surface, two longitudinal sides and two lateral sides. an absorbent core having a top sheet overlapping a first surface of the core; a liquid-impermeable backsheet associated with said topsheet, overlapping a second side of said topsheet; and for restraining the liquid from moving in a direction substantially parallel to the lateral sides. a sanitary napkin having barrier means arranged along said longitudinal sides; The backsheet extends beyond the perimeter of the core and attaches to the garment during use. the barrier means forming a flap for attaching the core to the flap; A sanitary napkin characterized in that it constitutes a wall adjacent to and connected to its surroundings. 4. The wall is a spacer disposed between the top sheet and the back sheet. The sanitary shield according to claim 1, 2 or 3, characterized in that it is formed of material. Raw napkins. 5. 4. The spacing member of claim 4, wherein the spacing member comprises a cantilevered strip. Sanitary napkins as described. 6. The spacing member is disposed between the top sheet and the core. The sanitary napkin according to claim 1, characterized in that: 7. 6. The spacing member comprises a foam strip. Sanitary napkins as described. 8. The barrier means has a central portion overlapping the core and a peripheral portion overlapping the core. characterized in that it consists of a top sheet forming walls along the longitudinal sides of the A sanitary napkin according to any one of claims 1 to 7. 9. The edge portion of the topsheet also extends along the lateral sides of the core. A sanitary napkin according to claim 8, characterized in that it is elongated. 10. Claim 1, wherein the barrier means comprises the backsheet. 10. The sanitary napkin according to any one of 9 to 9. 11. The free edge of the wall comprising the barrier means is provided with contraction means. Any one of claims 1, 2, 3, 8, 9, or 10, characterized in that The sanitary napkin described in item (1) above. 12. 12. The contraction means is made of an elastic member, according to claim 11. sanitary napkins. 13. The shrinking means is configured by shortening the free edge by crimping. The sanitary napkin according to claim 11, characterized in that it is formed by: