CN111787896A

CN111787896A - Method for preventing body fluid from flowing to back, and plastic support strip, body fluid absorbent article and underpants used for the same

Info

Publication number: CN111787896A
Application number: CN201980015648.7A
Authority: CN
Inventors: 金美希
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-11-17
Filing date: 2019-11-15
Publication date: 2020-10-16
Also published as: WO2020101416A1; KR102014032B1

Abstract

The present invention relates to a method of preventing body fluid from flowing to the back, and a plastic support strip, a body fluid absorbent article, and underpants used for the same, and more particularly, to a method of preventing body fluid from flowing to the back, in which underpants or the like provided with a plastic core material or a constricted portion are bent in the body fluid absorbent article to fill a part of the gluteal groove, thereby preventing body fluid from flowing to the back, and a plastic support strip, a body fluid absorbent article, and underpants used for the same.

Description

Method for preventing body fluid from flowing to back, and plastic support strip, body fluid absorbent article and underpants used for the same

Technical Field

The present invention relates to a method for preventing body fluid from flowing to the back, and a plastic support strip, a body fluid absorbent article, and underpants used for the same, and more particularly, to a method for preventing body fluid from flowing to the back, in which underpants or the like provided with a plastic core material or a constricted portion are bent in the body fluid absorbent article to fill a part of the gluteal sulcus (gluteal sulcus), thereby preventing body fluid from flowing to the back, and a plastic support strip, a body fluid absorbent article, and underpants used for the same.

Background

Typically, women of fertile age experience an average monthly menstrual cycle on a periodic basis. Women in menstrual period feel a lot of inconvenience, especially inconvenience of uneasiness to leakage of menstrual blood.

After 1920's development of disposable sanitary napkins-highly clean silk by kimberly corporation, sanitary napkins have undergone many developments. In order to rapidly absorb menstrual blood, a polymeric absorbent is added, and in order to prevent the menstrual blood from leaking laterally, a side flap is added on the side surface, so that a product forming multiple leakage-proof layers is very common. However, it is difficult to block menstrual blood flowing to the buttocks, and there is no sanitary napkin capable of directly blocking menstrual blood flowing out along the gluteal fold when lying down or sleeping.

In general, since the sanitary napkin is formed in a flat shape, a space is formed between the sanitary napkin and the cleft of the buttocks when the sanitary napkin is worn, and menstrual blood frequently leaks through the space. The menstrual blood thus discharged will not be absorbed by the sanitary napkin but flow to the back and contaminate the clothes or the quilt. This is particularly true when lying down or sleeping, and a method of blocking and absorbing menstrual blood leaking out along the gluteal fold is required. Although the sanitary towel can be worn in a night or pants type during sleeping, the sanitary towel only belongs to an oversize sanitary towel with a larger wrapping area, and cannot fundamentally block menstrual blood flowing to the buttocks. That is, when the night type or underpants type sanitary napkin is used, menstrual blood flowing out from the gluteal cleft can be absorbed by the absorption portion having a wider area and is prevented from leaking to the outside of the sanitary napkin, but since this is not a method of blocking the menstrual blood directly at the gluteal cleft, the menstrual blood flowing out along the gluteal cleft is rubbed around the gluteal cleft, and hence it is not sanitary. And is also more expensive than conventional sanitary napkins.

Therefore, in order to block menstrual blood flowing to the buttocks, it is necessary to fundamentally block menstrual blood from passing through the gluteal groove.

In view of this necessity, sanitary napkins having protruding menstrual blood absorbing portions attached to the buttocks side have been disclosed in Korean Utility model application Nos. 20-2001-. However, such a protruding absorbent portion is valuable because it can fill the space between the sanitary napkin and the cleft of the buttocks, but cannot cope with the changing shape of the buttocks. For example, when standing up, lying down, or sitting down, the shape of the buttocks changes, and particularly when sitting on a chair, the buttocks are depressed, and the gluteal groove becomes shallow. Therefore, it is needless to say that the fixed form of the protruding absorption portion is very inconvenient when the posture is changed. In addition, when the sanitary napkin is formed with the protruding absorbent portion, the sanitary napkin is three-dimensional, the thickness of the package increases, and it is difficult to realize a thin package that is easy to carry.

As described above, although a method of effectively blocking menstrual blood flow to the buttocks is a problem that must be solved in terms of the function of a sanitary napkin, there is no sanitary napkin that fundamentally solves such a problem.

On the other hand, since sanitary napkins are generally used by being stuck to underpants, in order to effectively block menstrual blood flowing to the buttocks, not only the sanitary napkin itself but also the buttocks-fitting property of the underpants to which the sanitary napkin is stuck need to be improved.

Further, this applies not only to menstrual blood, but also to various body fluids such as urine, blood, lymph, and pus. In particular, in a modern society in which the number of aged layers lying in bed for a long time is increased due to an increase in the average life span, the sales of adult diapers are rapidly increased, and it is highly required to develop a technology for preventing body fluids from flowing to the back through the gluteal cleft.

Documents of the prior art

Patent document 1: korean Utility model granted application No. 20-2001-0025132

Patent document 2: korean Utility model granted application No. 20-2003-0002367

Patent document 3: korean Utility model granted application No. 20-2003-0016829

Disclosure of Invention

Problems to be solved

The reason for creating a space between the sanitary napkin and the cleft of the buttocks is that it is difficult for the flat sanitary napkin to conform to the curved surface of the buttocks. That is, in order to block menstrual blood flowing into the cleft of the buttocks, an absorbent portion (hereinafter, referred to as "buttocks insertion portion") to be inserted into the buttocks is required, and thus the sanitary napkin needs to be three-dimensional.

Therefore, in the present invention, instead of using the protruding absorption portion as the hip insertion portion, an attempt is made to form the hip insertion portion by deforming the sanitary napkin itself.

Further, since the sanitary napkin is generally used by being attached to underwear, if the underwear is also configured to fit into the gluteal groove like the buttocks insertion portion of the sanitary napkin, menstrual blood can be blocked more effectively from flowing into the gluteal groove.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a method for preventing body fluid from flowing to the back by filling a part of the gluteal groove by bending a body fluid absorbent article such as underpants provided with a plastic core or a contraction portion.

And, another object of the present invention is to provide a plastic support strip for preventing body fluid from flowing to the back, which is used in the method for preventing body fluid from flowing to the back.

In addition to the objects explicitly described above, the present invention may also achieve other objects that can be easily derived by a person of ordinary skill in the art to which the present invention pertains from the above objects and the overall techniques in the present specification.

Means for solving the problems

In order to achieve the above object, the method for preventing body fluid from flowing to the back according to the present invention is characterized in that the body fluid absorbent article fills a part of the gluteal groove by bending a part of the underpants in which the contraction part is formed, the plastic support strip or a part of the underpants in which the contraction part is formed and the plastic support strip on a side of the body fluid absorbent article corresponding to a region from the urethra to the coccyx.

Further, the body fluid absorbent article may be a sanitary napkin or a diaper.

And, said plastic support strip may be joined to said body fluid absorbent article in a direction transverse to said gluteal cleft.

The contraction portion may be formed in the underpants along a direction corresponding to the gluteal cleft.

Further, the body fluid may be selected from the group consisting of menstrual blood, urine, blood, lymph, pus, and a mixture thereof.

In another aspect, the plastic support strip for preventing body fluid from flowing to the back of the present invention is characterized by comprising: a plastic core having a length of up to 4cm to 15cm, preferably up to 4.5cm to 14cm, more preferably up to 5cm to 13 cm; and a bonding member which bonds the plastic core or the sheath covering the core in a direction crossing the gluteal groove in a region corresponding to a region from the urethra to the coccyx in the body fluid absorbent article.

The plastic support strip may further include a cover portion covering a part of the attachment portion of the body fluid absorbent article in a direction perpendicular to the longitudinal direction of the plastic core.

Also, the cover part may form 1 to 5 dotted lines, preferably, 1 to 3 dotted lines, and more preferably, 1 to 2 dotted lines.

Also, the dotted line may be adjacent to the plastic core.

The range of the attachment portion of the body fluid absorbent article covered by the cover portion may be from the portion to which the plastic core material is attached to the back side attachment portion of the body fluid absorbent article to the end or a half of the range.

Furthermore, the plastic support strip may be bonded to the body side, the outer side, or both the body side and the outer side of the body fluid absorbent article.

Furthermore, the plastic support strip may be bonded to the body fluid absorbent article in an amount of from 1 to 5, preferably from 1 to 4, more preferably from 1 to 3.

In the body fluid absorbent article for preventing body fluid from flowing to the back, a plastic core member is placed between the body-side liquid-permeable layer and the liquid-absorbent layer, between the liquid-absorbent layer and the outer non-liquid-permeable layer, inside a bag formed on the outer surface of the outer non-liquid-permeable layer, and at a position formed by a combination thereof, and the length of the plastic core member is 4cm to 15cm, preferably 4.5cm to 14cm, more preferably 5cm to 13cm, and the plastic core member is placed in a region corresponding to a region from the urethra to the coccyx in a direction crossing the gluteal groove.

Moreover, the number of the plastic core materials to be incorporated in the body fluid absorbent article may be 1 to 5, preferably 1 to 4, and more preferably 1 to 3.

In the body fluid absorbent article for preventing body fluid from flowing to the back according to the present invention, the plastic support strip is bonded to the region corresponding to the region from the urethra to the coccyx in the direction crossing the gluteal groove.

In the underpants for preventing body fluid from flowing to the back according to the present invention, a constricted portion is formed in a region corresponding to a region from the urethra to the coccyx in a direction corresponding to the gluteal groove.

The contraction part may be formed by mechanical or chemical contraction processing or may be formed by pleating, and the pleating may be shirting pleating, fine pleating, sewing pleating, waling pleating, machine pleating, pleating due to contraction or stretch band, and combinations thereof.

Further, the inner portion formed with the above-mentioned constricted portion may be constricted in length to 80% to 40%, preferably 70% to 50%, before the constricted portion is formed.

In addition, the bodily fluid absorbing underwear for preventing bodily fluid from flowing to the back of the wearer according to the present invention is characterized in that the plastic support strip is bonded to an area of the underwear corresponding to an area from the urethra to the coccyx in a direction crossing the gluteal groove.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the solution to the problem of the present invention as described above, various effects as follows can be expected. However, not all effects can be achieved to enable the present invention.

According to the method for preventing body fluid from flowing to the back, and the plastic stay, the body fluid absorbent article and the underpants therefor of the present invention, the variable buttocks-insertion portion can be provided by using the underpants provided with the plastic core material or the contraction portion, and the buttocks-insertion portion attached to the buttocks can directly block menstrual blood, urine, blood, lymph, pus and the like from flowing to the gluteal groove, thereby effectively preventing body fluid from flowing to the back.

The plastic support strip, the body fluid absorbent article and the underpants according to the present invention for preventing body fluid from flowing to the back can provide a variable shape of the buttocks insertion portion, the plastic support strip can use inexpensive parts, thus having economical efficiency, and can realize thin packaging like the conventional body fluid absorbent article, thus being portable, easy to manufacture due to simple structure, and high industrial applicability. In addition, in the underpants provided with the contracted portion of the present invention, a bent portion capable of corresponding to the gluteal cleft can be formed, and the buttock adhesion force of the body fluid absorbent article provided with or without the plastic stay can be improved.

Drawings

Fig. 1 is an embodiment of the plastic support strip of the present invention.

Fig. 2 is an embodiment of the plastic support strip of the present invention provided with a cover portion.

Fig. 3 is an embodiment of the plastic support strip of the present invention provided with a cover portion and dotted lines.

FIG. 4 shows an embodiment of the body fluid absorbent article (medium) of the present invention with a plastic core placed therein.

FIG. 5 shows an embodiment of the body fluid absorbent article (medium-sized) of the present invention having a plurality of plastic core members built therein.

FIG. 6 is an embodiment of a body fluid absorbent article (oversized) of the present invention having a plurality of plastic cores disposed in a spaced apart relationship.

FIG. 7 is another embodiment of a body fluid absorbent article (oversized) according to the present invention having a plurality of plastic cores disposed in a spaced apart relationship.

FIG. 8 shows an embodiment of the body fluid absorbent article (medium size) of the present invention in which the plastic support strip provided with the cover portion is combined.

FIG. 9 shows an embodiment of a body fluid absorbent article (oversized) according to the invention incorporating a plurality of plastic support strips provided with a cover.

Fig. 10 is a schematic view showing a state where a conventional body fluid absorbent article is in contact with the buttocks.

FIG. 11 is a schematic view showing a state where the body fluid absorbent article to which the plastic support strip is bonded of the present invention is in contact with buttocks.

FIG. 12 is a schematic view showing a state where the body fluid absorbent article having a plastic core incorporated therein of the present invention is in contact with the buttocks.

Fig. 13 shows various embodiments of the underpants according to the invention in which the contracted part is formed by wrinkles.

Fig. 14 is a photograph of an embodiment of underpants according to the invention in which a contracted portion is formed by wrinkles, taken from the side.

FIG. 15 is a photograph taken in a state where a conventional body fluid absorbent article is in contact with the buttocks.

FIG. 16 is a photograph taken in a state where the body fluid absorbent article of the present invention is in contact with the buttocks.

FIG. 17 is a photograph which is obtained by simulating the sitting state of the body fluid absorbent article of the present invention on the ground with the body fluid absorbent article in contact with the buttocks.

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described in detail.

However, the following is merely an illustration of specific embodiments and a detailed description thereof, and various modifications may be made to the present invention and various embodiments of the present invention are possible, and thus the present invention is not limited to the specific embodiments illustrated. It should be understood that the present invention includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

It will be apparent to those skilled in the art that many specific details, such as specific components, are set forth in the following description to provide a thorough understanding of the present invention, and that the present invention can be practiced without such specific details. Moreover, in describing the present invention, in the case where it is judged that a detailed description of related well-known functions or configurations may obscure the gist of the present invention, a detailed description thereof will be omitted.

Furthermore, the terminology used in the description presented herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Unless otherwise defined, all terms used herein, including technical terms or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms defined in commonly used dictionaries should be interpreted as having the same meaning as in the context of the relevant art and should not be interpreted in an idealized or highly formal sense unless expressly so defined herein.

In this application, expressions in the singular number include expressions in the plural number as long as other meanings are not explicitly expressed in the context.

In the present application, terms such as first, second, and the like may be used in describing various structural elements, and the structural elements should not be limited to the terms. The terms are only used to distinguish one structural element from another. For example, a first structural element may be termed a second structural element, and similarly, a second structural element may be termed a first structural element, without departing from the scope of the claimed invention.

In the present application, the terms "including", "containing" or "having" and the like are used to designate the presence of the features, structural elements (or constituent components) and the like described in the specification, and do not exclude the presence or addition of one or more other features, structural elements and the like.

In the present application, "plasticity" refers to the property of a substance that causes permanent deformation when deformation is generated by applying force, and representative substances having such plasticity include metals and synthetic resins.

In the present application, the term "buttocks insertion portion" refers to a portion of the bodily fluid absorbent article which fills the cleft of buttocks when a region of the bodily fluid absorbent article corresponding to a region from the urethra to the coccyx is bent by a part of the underwear formed with the contraction portion or a plastic support band to fill a part of the cleft of buttocks.

Fig. 11 is a schematic view showing a state where the bodily fluid absorbent article 200 to which the plastic support strip 100 is bonded of the present invention is in contact with the buttocks 10, and fig. 12 is a schematic view showing a state where the bodily fluid absorbent article 200 with the plastic core material 110 built therein of the present invention is in contact with the buttocks 10. Fig. 16 is a photograph taken in a state where the body fluid absorbent article 200 of the present invention is in contact with the buttocks 10.

As shown in fig. 11, 12 and 16, in the present invention, the above-mentioned problem can be solved by combining the body fluid absorbent article 200 with the plastic support strip 100. Specifically, the bodily fluid absorbent article 200 can be fitted to the cleft 12 in a variable form by combining the plastic support strip 100 having a property of maintaining its form after being gently deformed with the bodily fluid absorbent article 200 in such a manner as to straddle the cleft 12, whereby the bodily fluid can be effectively prevented from flowing to the back.

Fig. 4 shows an embodiment of the body fluid absorbent article 200 (medium-sized) of the present invention with a plastic core 110 built therein, and fig. 5 shows an embodiment of the body fluid absorbent article 200 (medium-sized) of the present invention with a plurality of plastic cores 110 built therein. Further, FIG. 6 shows an embodiment of a body fluid absorbent article 200 (oversized) of the present invention having a plurality of plastic cores 110 disposed in a spaced-apart manner, and FIG. 7 shows another embodiment of a body fluid absorbent article 200 (oversized) of the present invention having a plurality of plastic cores 110 disposed in a spaced-apart manner.

As shown in fig. 4 to 7, the body fluid absorbent article 200 for preventing body fluid from flowing to the back of the present invention is characterized in that a plastic core member 110 is provided in the body fluid absorbent article 200 at a position between a body-side liquid-permeable layer and a liquid-absorbent layer, between the liquid-absorbent layer and an outer-side non-liquid-permeable layer, inside a pocket formed on the outer surface of the outer-side non-liquid-permeable layer, or a combination thereof, the length of the plastic core member 110 is 4cm to 15cm, preferably 4.5cm to 14cm, more preferably 5cm to 13cm, and the plastic core member 110 is provided in the body fluid absorbent article 200 in a region corresponding to a region from the urethra to the coccyx in a direction crossing the gluteal groove 12.

The length of the plastic core 110 is from about 40% to about 95%, preferably from about 45% to about 90%, more preferably from about 50% to about 85% of the short side of the body fluid absorbent article 200, which corresponds to the length S in fig. 4 and 6.

Further, the body fluid absorbent article 200 may be a sanitary napkin or a diaper. Specifically, the bodily fluid absorbent article 200 is meant to include all disposable bodily fluid absorbent articles 200 and cotton-based bodily fluid absorbent articles 200, and further, is meant to include pads provided with an absorbent layer, such as sanitary napkins, diapers, adult diapers, and the like.

For a body fluid absorbent article 200 of cotton material, the plastic core 110 or a separate pocket that may include the removable plastic support strip 100 should be placed in a waterproofed state, depending on the characteristics of the article to be cleaned. If the cotton fluid absorbent article 200 is provided with a bag so that the plastic stay 100 can be detached, the state of detaching the plastic stay 100 also belongs to the present invention.

Moreover, the number of the plastic core materials 110 that can be built into the body fluid absorbent article 200 may be up to 1 to 5, preferably, 1 to 4, and more preferably, 1 to 3. For example, fig. 4 shows a case where 1 plastic core material 110 is built in, fig. 5 shows a case where 2 plastic core materials 110 are built in an adjacent manner, fig. 6 shows a case where 1 plastic core material 110 and another 1 plastic core material 110 spaced apart are built in, and fig. 7 shows a case where 2 adjacent plastic core materials 110 and 1 plastic core material 110 spaced apart are built in. By providing a plurality of plastic core members 110 in this manner, the body fluid absorbent article 200 can stably bend the plastic core members 110, thereby completely blocking the flow of body fluid from the cleft 12 to the back.

Fig. 8 is a view showing an example of the bodily fluid absorbent article (medium size) of the present invention in which the plastic support strips provided with the cover are combined, and fig. 9 is a view showing an example of the bodily fluid absorbent article (oversized) of the present invention in which a plurality of the plastic support strips provided with the cover are combined.

The present invention also provides a deformable body fluid absorbent article 200 incorporating a plastic support strip 100. Specifically, the bodily fluid absorbent article for preventing the bodily fluid from flowing to the back of the present invention is characterized in that the plastic support strip 100 is bonded in a direction crossing the gluteal groove in the region corresponding to the region from the urethra to the coccyx in the bodily fluid absorbent article.

The plastic support strip 100 includes a plastic core material 110 having characteristics capable of gently deforming and maintaining the shape of the body fluid absorbent article 200 in such a manner that the body fluid absorbent article 200 fits into the cleft 12 by being combined with the body fluid absorbent article 200. For example, the plastic core 110 may have a flexible metal core, preferably a flexible metal member such as a flexible iron core or a synthetic resin core, and preferably a plastic core, but is not limited thereto.

For example, in the case that the plastic support strip 100 includes a flexible core as the plastic core 110, it is preferable that the flexible core is coated with resin so as not to be exposed to the outside, and the number of the flexible core may be 1 or more in order to more stably fit the buttocks 10.

The plastic stay 100 is bonded to the body fluid absorbent article 200 so as to extend across the gluteal groove 12, preferably, bonded to the body fluid absorbent article 200 so as to extend across the gluteal groove 12 between the urethra and the coccyx, and may be bonded or bonded, for example. It is meant to include all forms in which the plastic support strip 100 is fixed to the body side, the outer side or both sides of the bodily fluid absorbent article 200 in a manner to have a function of preventing the bodily fluid from flowing to the back, either individually or in combination in a manner to enable the removal of the adhesive.

The number of the plastic support strip 100 bonded in the body fluid absorbent article 200 may be up to 1 to 5, preferably, 1 to 4, and more preferably, 1 to 3, depending on the size of the body fluid absorbent article 200. For example, for an oversized size of 28cm or more, or for a very wide covering of the buttocks 10, such as a night use or the like, it is preferable to bond 2 or more plastic support bars 100, for example, in a number of up to 2, preferably in a manner to straddle the anus and coccyx sites on both sides, respectively.

For example, fig. 8 shows a case where 1 plastic support strip 100 is combined, and fig. 9 shows a case where 2 plastic support strips 100 are combined in an adjacent state. By providing a plurality of plastic support strips 100 in this manner, the body fluid absorbent article 200 can be stably bent by the plastic support strips 100, and the body fluid can be completely prevented from flowing from the gluteal cleft 12 to the back.

The deformable body fluid absorbent article 200 can be used in a three-dimensional form by forming the buttocks insertion portion with the plastic stay 100 in order to prevent body fluid from flowing to the back, but can be used in a flat form like the ordinary body fluid absorbent article 200. When the body fluid absorbent article 200 is used with the effect of preventing body fluid from flowing to the back, the plastic support strip 100 attached so as to extend over the region corresponding to the cleft 12 of the buttocks is pressed by a hand or the like, and is inserted between the clefts 12, and the buttocks insertion portion is formed by fitting the buttocks 10.

The plastic stay 100 attached to the deformable bodily fluid absorbent article 200 has a characteristic of being gently deformed, and even when the depth of the cleft 12 is different due to a change in posture, for example, when the buttocks 10 are pressed as in the case shown in fig. 17 by sitting on a chair or the like as in the case shown in fig. 16, the bodily fluid absorbent article 200 can assist so as to be variably attached in correspondence with the variable form buttocks 10.

On the other hand, when the deformable body fluid absorbent article 200 is attached to ordinary underpants, if the body fluid absorbent article 200 is inserted into the buttocks 10 in a state where the buttocks insertion portion is bonded to the underpants, the body fluid absorbent article is easily detached from the cleft 12 together with the underpants, and therefore, in order to stably attach and fix the body fluid absorbent article 200 to the cleft 12, it is preferable that the buttocks insertion portion is not bonded to the underpants. That is, it is preferable that the body fluid absorbent article 200 is formed such that the front side (upper side in fig. 4 to 9) is attached to underwear and the rear side (lower side in fig. 4 to 9) of the body fluid absorbent article 200 is formed as a hip insertion portion regardless of underwear, with the outer side (bonded portion) of the body fluid absorbent article 200 centered on the plastic stay 100. For this reason, the body fluid absorbent article 200 can be manufactured by removing the bonded portion of the hip insertion part or by covering the bonded portion with a separate member such as the cover part 130 as shown in fig. 8 and 9.

In contrast, in the underpants 300 with the contracted portion of the present invention described later, the body fluid absorbent article 200 is attached to the gluteal fold by forming the bent portion corresponding to the gluteal fold, and more preferably, the body fluid absorbent article 200 is bonded to the underpants 300. Therefore, in this case, unlike the above-mentioned conventional underpants, it is not necessary to provide a cover portion to the plastic support strip.

Fig. 1 is an embodiment of the plastic support bar of the present invention, fig. 2 is an embodiment of the plastic support bar of the present invention provided with a cover portion, and fig. 3 is an embodiment of the plastic support bar of the present invention provided with a cover portion and dotted lines.

The plastic support strip 100 in combination with the body fluid absorbent article 200 described above may also be provided separately.

As shown in fig. 1, the plastic support strip 100 for preventing body fluid from flowing to the back of the present invention is characterized by comprising: a plastic core 110 having a length of up to 4cm to 15cm, preferably up to 4.5cm to 14cm, more preferably up to 5cm to 13 cm; and a joining member 120 for joining the plastic core 110 or the outer skin covering the plastic core in a direction crossing the gluteal groove 12, in a region corresponding to a region from the urethra to the coccyx in the bodily fluid absorbent article 200.

The plastic core material is bent in the body fluid absorbent article to fill the cleft of the buttocks, and the coupling member is a bonding member or an adhering member formed on the plastic core material or on the outer skin accommodating the plastic core material in order to adhere the plastic core material to the body fluid absorbent article or the underwear alone.

As shown in fig. 2, the plastic support strip 100 may further include a cover part 130, and the cover part 130 covers a part of the adhesive part of the body fluid absorbent article 200 in a direction perpendicular to the longitudinal direction of the plastic core member 110. When the ordinary underpants are used, the cover part is used for covering the underpants adhesive part of the body fluid absorption article, so that the buttocks insertion part is not adhered to the underpants.

As shown in fig. 3, the cover part 130 may have 1 to 5 broken lines 140, preferably 1 to 3 broken lines 140, more preferably 1 to 2 broken lines 140, and the bonded part of the hip insertion part of the body fluid absorbent article 200 may be appropriately covered with the broken lines 140.

The range of the bonded portion of the bodily fluid absorbent article 200 covered by the lid 130 may be from the portion where the plastic core material 110 is bonded to the back side bonded portion end of the bodily fluid absorbent article 200 or a half of these.

Further, the plastic stay 100 may be bonded to the body side, the outer side, or both the body side and the outer side of the bodily fluid absorbent article 200. Fig. 11 shows a state where the plastic support strip 100 is bonded to the outside of the body fluid absorbent article 200.

The plastic stay 100 may be attached to the body fluid absorbent article 200 on the hip 10 contact side, may be attached so as to extend across the gluteal groove 12, and may preferably be attached to the body fluid absorbent article 200 on the side, the outside, or both sides of the body fluid absorbent article 200 so as to extend across the gluteal groove 12 between the urethra and the coccyx. For example, in the case where the plastic stay 100 is attached to the body side of the bodily fluid absorbent article 200, the plastic stay 100 can more firmly fix the bodily fluid absorbent article 200 and also can directly function as a barrier film, and thus is suitable for night use, and since it is a portion directly contacting the skin, there is a limit in selecting a surface material of the plastic stay 100, and the like. On the other hand, the form of sticking the plastic stay 100 to the outside of the bodily fluid absorbent article 200 is not directly in contact with the skin, and is not particularly limited in terms of material, and is therefore preferable. When the thickness of the body fluid absorbent article 200 is large, the body fluid absorbent article can be attached to both the body side and the outer side from the viewpoint of improving the fixability.

The plastic support strip 100 may be provided with the coupling member 120 in a manner of coupling with the body fluid absorbent article 200 in a state that the outer skin surrounds 1 to 5 plastic core materials 110 or the coupling member 120 in a manner of coupling with the body fluid absorbent article 200 in a state that the outer skin does not surround the plastic core materials 110, preferably, the number of the plastic core materials 110 may be 1 to 4, more preferably, 1 to 3, and various forms may be formed according to the kind of the body fluid absorbent article 200 and the side to which the plastic support strip is attached. For example, in the body fluid absorbent article 200 having no adhesive portion formed on the outer side, a diaper, a pants-type sanitary napkin, a cotton sanitary napkin, or the like may be formed in the form shown in fig. 1, and in the pants-attachment body fluid absorbent article 200 having an adhesive portion formed on the outer side, in the general underpants, it is preferable to form the form shown in fig. 2 or 3 in which the cover 130 for covering the wide portion is provided so as not to attach the buttocks insertion portion to the underpants, and in the underpants 300 of the present invention provided with the contracted portion, it is preferable to form the form shown in fig. 1.

Further, in the case of attaching the plastic stay 100 to a general sanitary napkin, various applications can be realized, and for example, in the case of using the plastic stay 100 instead of a night type sanitary napkin, if a user lies prone to sleep due to sleeping habits, the plastic stay 100 is attached to the rear of the hip 10 side of the body fluid absorbent article 200, and not only, but also, is appropriately attached to the front, thereby preventing body fluid from flowing forward.

The plastic support strip 100 is convenient to carry, and can be attached to a desired position of the body fluid absorbent article 200 for use as needed, thereby being very convenient.

On the other hand, the underpants 300 for preventing body fluid from flowing to the back of the present invention are characterized in that a constriction 310 is formed in a region corresponding to a region from the urethra to the coccyx in a direction corresponding to the gluteal groove 12. Fig. 14 shows a side view of the underwear having the contracted portion formed by the wrinkles, and it is confirmed that the underwear is curved so as to correspond to the gluteal groove 12.

The pleats may be shirred pleats, fine pleats, sewn pleats, wale pleats, pleats due to a shrinkable or stretchable tape, and combinations thereof. The shirred pleat is a form in which a cloth is pierced with a needle and contracted to form a pleat, and the shirred pleat (for three-dimensional fitting to a human body) is a form in which a predetermined portion is folded and contracted. In fig. 13, the uppermost pants are pants wrinkled with an elastic band, the middle pants are pants wrinkled, and the lower pants are pants wrinkled.

Also, the portion of the underpants 300 where the above-mentioned contracted portion 310 is formed may be contracted to 80% to 40%, preferably 70% to 50% of the length before the contracted portion 310 is formed.

When the underpants 300 are worn, the groove corresponding to the cleft 12 is formed by the contraction part 310, and the groove may assist the body fluid absorbent article 200 to fit the cleft 12, and may further include a non-stretchable band, a stretchable band, or a core material. The core may be a plastic core of the present invention and may be disposed in a direction across the gluteal groove.

Further, the bodily fluid absorbing underwear for preventing bodily fluid from flowing to the back of the user according to the present invention is characterized in that the plastic support strip 100 is bonded to an area of the underwear corresponding to an area from the urethra to the coccyx in a direction crossing the gluteal groove.

In general, sanitary underpants for menstrual use are generally used with waterproof cloth as a pad for preventing leakage of menstrual blood, and since the waterproof cloth is not stretchable, the underpants cannot be well attached to the buttocks, and are inconvenient compared to ordinary underpants because of poor air permeability. Furthermore, although the waterproof cloth locks menstrual blood flowing to the buttocks during sleep, the menstrual blood may spread around the buttocks. In contrast, the underpants 300 provided with the contracted portion of the present invention are curved in accordance with the cleft of the buttocks, and the bodily fluid absorbent article 200 can be well fitted to the cleft of the buttocks, so that the menstrual blood is less likely to flow into and spread in the cleft of the buttocks 12. Although the waterproof cloth may be used as needed, the waterproof cloth may not be used, and in this case, the air permeability is good, and comfort is felt. The underpants 300 having such a contracted portion have an advantage that not only the bodily fluid absorbent article 200 is well fitted to the gluteal cleft, but also the curve of the buttocks is revealed when the lower garment such as pants is worn, unlike general sanitary underpants.

In order to achieve the above object, the method for preventing body fluid from flowing to the back according to the present invention is characterized in that a part of the underpants 300 having the constriction 310 formed therein, a part of the underpants 300 having the plastic support strip or the constriction 310 formed therein, and the plastic support strip 100 are bent at a region side corresponding to a region from the urethra to the coccyx of the body fluid absorbent article 200, thereby filling a part of the gluteal groove 12 with the body fluid absorbent article 200.

Also, the plastic support strip 100 may be combined with the body fluid absorbent article 200 in a direction crossing the gluteal groove 12.

The contraction part may be formed in the underpants 300 along a direction corresponding to the gluteal cleft 12.

Hereinafter, examples of the present invention will be described.

Modes for carrying out the invention

[ model experiment of Deformable body fluid absorbent article of the present invention ]

In order to show the principle of preventing menstrual blood from flowing to the back and the effect thereof of the deformable body fluid absorbent article of the present invention, experiments were conducted by model, and the results thereof are shown in fig. 15 to 17.

As shown in fig. 15 to 17, 2 boiled eggs were prepared to represent buttocks, and a plastic core material made of a flexible iron core was inserted into one side of the body fluid absorbent article in fig. 16 and 17 so as to straddle the gluteal cleft, thereby forming a buttocks insertion portion formed of the body fluid absorbent article of the present invention. Figure 15 shows a generally planar body fluid absorbent article without the interposition of a plastic core. The protruding parts of the 2 boiled eggs were models of both buttocks, and the space formed between the 2 boiled eggs represents the gluteal cleft.

In the case of a conventional body fluid absorbent article, a space is formed between the flat body fluid absorbent article and the cleft of the buttocks (fig. 15), but the body fluid absorbent article of the present invention fills such a space with a buttocks insertion portion formed by a plastic core material (fig. 16). Even when the buttocks are pressed and the gluteal groove becomes shallow, the buttocks insertion portion is formed to be short so that the plastic core material corresponds thereto (fig. 17).

As described above, as is apparent from the results shown in fig. 16 and 17, the bodily fluid absorbent article of the present invention is configured such that the buttocks are fitted to the plastic core such as the flexible core, and the space between the buttocks is filled to directly block menstrual blood from flowing through the buttocks, and the variable buttocks insertion portion is formed so as to correspond to the form of the variable buttocks according to the posture.

[ examples of the plastic support strip of the present invention ]

Fig. 1 to 3 show an example of the plastic support strip of the present invention, showing the form of fig. 1 without a separate cover part except for the plastic core material, showing the form of fig. 2 including the cover part, and finally showing the form of fig. 3 with a broken line formed in the cover part.

The plastic core material is bent in the body fluid absorbent article to fill the cleft of the buttocks, and the joining member is a bonding member or an adhering member formed on the outer skin of the plastic core material or the plastic core material for adhering the plastic core material to the body fluid absorbent article or underwear alone. The cover part functions to cover the underwear-bonded part of the bodily fluid absorbent article in such a manner that the buttocks insertion part is not stuck to the underwear when the ordinary underwear is used. In the case of attaching to the underpants provided with the contraction part of the present invention, as described above, the plastic stay does not need a separate cover part.

The transverse length of the plastic support strip of the present invention may be up to 4cm to 15cm (transverse length in fig. 1 to 3), preferably up to 5cm to 13 cm. The longitudinal length (longitudinal length in fig. 1 to 3) of the plastic support strip excluding the cap section may be up to 0.1cm to 3cm, preferably up to 0.2cm to 2cm, and in the case of including the cap section, may be formed in various lengths depending on the length of the bodily fluid absorbent article. Specifically, in the case of a body fluid absorbent article having a length of not less than a super-large size, not less than 2 cover parts may be attached to cover the bonded part of the underwear.

The plastic support strip is bonded to the outside (bonded portion) of the body fluid absorbent article so as to extend between the urethra and the coccyx, and is bonded so as to pass around the anus when 1 plastic support strip is bonded, for example, at a position spaced from the center of the core portion of the body fluid absorbent article by about 3cm to 10cm toward the hip portion, preferably at a position spaced from 4cm to 9cm, and more preferably at a position spaced from 5cm to 8 cm. On the other hand, when 2 plastic support strips are attached, the plastic support strips are preferably attached so as to pass through the anus and the coccyx, for example, additionally attached at a position spaced apart from the plastic core material by about 4cm to 5cm, so that the hip insertion portion can be stably attached to the hip, which is preferable. In view of this, in the case of attaching 2 plastic support strips, a suitable longitudinal length of the cover part is 4cm to 5cm in order to cover the panty bonding part by means of adhesive attachment.

[ test examples ]

In this example, the plastic support strip of the example was manufactured and attached to the outer side (attached portion) of a general sanitary napkin on the market to examine the effect of the present invention.

The tape-type (longitudinal length 1.5cm) plastic support strip shown in fig. 1 and the cover-type (longitudinal lengths 4.5cm and 6.5cm) plastic support strip shown in fig. 2 or 3, which have a transverse length of 7cm, were manufactured by surrounding a flexible core, which is a plastic core, with a nonwoven fabric as a sheath, and were attached to various kinds of sanitary napkins sold on the market, thereby testing the degree of attachment of the buttocks, the variability of the buttocks insertion portion, and the wearing sensation. To see the individual effect of the plastic support strip, first a normal underpants was used.

1. Method of making and Using Deformable sanitary napkin embodiments having Plastic support strips (invention) affixed thereto Universal underpants)

First, 1 or 2 plastic support strips of the present invention were attached to various kinds of sanitary napkins on the market to make a transformable sanitary napkin. In order to cover the underwear-bonded portion of the buttocks-insertion portion, two cover-type plastic support strips having longitudinal lengths of 4.5cm and 6.5cm were combined and bonded.

A first plastic support strip is adhered to the outside of the sanitary napkin (the adhesive) at a location spaced about 5cm to 8cm from the center of the core portion of the sanitary napkin. In the case of using 1 plastic support strip, for example, in the case of using a medium size of 24cm, a cover type having a longitudinal length of 4.5cm is suitably used, and in the case of using a large size of 26cm, a cover type having a longitudinal length of 6.5cm is suitably used in order to sufficiently cover the underwear adhesive portion. In the case where it is necessary to use 2 plastic support strips, after a cap type having a longitudinal length of 4.5cm is attached as a first plastic support strip in order to pass through the anus and the coccyx, respectively, a second plastic support strip appropriate corresponding to the length of the sanitary napkin is attached.

Next, after the deformable sanitary napkin was attached to underwear and the underwear was put on, the plastic stay was inserted into the anus by pressing it with a hand and fixed. In the case of sticking 2 plastic support bars, the second plastic support bar is pressed between the coccyx to be fixed so that the buttocks insertion portion and the portion extended therefrom are fitted to the buttocks.

2. Buttocks fitting degree comparison of deformable sanitary napkin with plastic support strip adhered thereto (Using common underpants)

After the core material portion of the plastic stay was inserted and fixed by pressing with a hand, the degree of maintenance of the formed hip insertion portion was compared. The relative evaluation was performed after dividing the fit of the sanitary napkin to the buttocks into 5 grades of poor, normal, good, excellent, etc., and the results are shown in table 1.

TABLE 1

Classification	Kinds of sanitary napkins	Type and number of plastic support strips	Longitudinal length of cover part	Degree of fit of buttocks
					Comparative example	Medium size (24cm)	-	-	Is very poor
Example 1	Medium size (24cm)	Strip type, 1	-	In general
					Example 2	Medium size (24cm)	Cover type, 1	4.5cm	Good effect
Example 3	Large scale (26cm)	Cover type, 1	6.5cm	Good effect
					Example 4	Super-huge type (28cm)	Cover type, 1	4.5cm	In general
Example 5	Super-huge type (28cm)	Cover part type, 2	4.5cm+4.5cm	Good effect
					Example 6	Night (33cm)	Cover type, 1	4.5cm	In general
Example 7	Night (33cm)	Cover part type, 2	4.5cm+6.5cm	Good effect
					Example 8	Underpants type (M)	Strip type, 1	-	In general
Example 9	Underpants type (M)	Strip type, 2	-	In general

In example 2 using the middle size of 26cm or less and example 3 using the large size, the hip insertion part can be sufficiently maintained even if 1 cover type plastic stay is used. In both cases, the fit in the gluteal groove is best because there is no portion projecting to the posterior side of the coccyx. In the case of using 1 cap-type plastic stay in an extra large size of 28cm, the portion of the sanitary napkin protruding toward the rear side of the coccyx was not allowed to fit the buttocks and protruded in a bent state (examples 4 and 6), and in the case of further attaching the cap-type plastic stay to the coccyx portion, the portion of the sanitary napkin longer than the coccyx was allowed to fit the buttocks, and the buttocks insertion portion was maintained (examples 5 and 7). Finally, if the length of the sanitary napkin is too long compared to the coccyx portion, it is necessary to provide plastic support strips at the anus and around the coccyx, respectively.

On the other hand, when the buttocks insertion portion is inserted into the gluteal groove in a state of being bonded to the underwear as in example 1 using the band-type plastic stay, there is a possibility that the buttocks insertion portion is detached from the gluteal groove together with the underwear or that the attaching portions on both sides of the buttocks insertion portion are attached to each other in the process of being separated from the underwear and thus cannot be deformed in a variable manner any more.

Further, in the pants-type sanitary napkin, unlike the pants-attachment type, since there is no adhesive portion on the outer side of the sanitary napkin, 1 or 2 tape-type plastic support strips are attached instead of the cap type (examples 8 and 9). In the case of the underpants type sanitary napkin, the structure in which the buttocks insertion portion is stuck to the underpants is similar to that of example 1, and although the buttocks insertion portion is not maintained well in a separate manner as in the underpants sticking type, it can be considered as an auxiliary effect for preventing the flow to the back from the viewpoint that the plastic support strip can block at least a part of the gluteal cleft.

3. Production of sanitary napkin having fixed projecting absorbent portion (for comparison)

In order to compare the variability and wearing feeling with the deformable sanitary napkin of the present invention, a conventional sanitary napkin provided with a protruding absorbent portion (hereinafter referred to as "protruding sanitary napkin") was prepared for the buttocks. After 2 medium-sized sanitary napkins were stacked and a protruding absorbent portion was formed using the upper sanitary napkin, the space between the 2 sanitary napkins was filled with cotton and fixed, thereby forming a protruding sanitary napkin (comparative example 1).

4. Evaluation of variability and feeling of use

Comparative example 1 was prepared as a comparative example in the manner described above, and compared with example 2 of the present invention of the same size in terms of variability and wearing sensation. After the hip insertion portion was formed, the hip groove was made shallow by the influence of the chair surface by repeating the operations such as sitting down and standing up in front of the chair, and the variability and wearing feeling of the hip insertion portion corresponding thereto were evaluated, and the results thereof are shown in table 2. This evaluation should be performed in a state where the sanitary napkin is well attached to the buttocks, and tight-fitting underpants are worn as much as possible in order to increase the degree of attachment of the buttocks of the sanitary napkin. In the case of large-sized or tight-fitting underwear that is not oversized or over, since there is a possibility that the degree of hip fit decreases, it is understood that this evaluation cannot be made as a standard.

In example 2 of the present invention, when the buttocks are pressed by the chair surface, the buttocks insertion portion is deformed so as to correspond to the cleft of buttocks, and when the buttocks insertion portion is lifted up again, the buttocks can be deformed so as to correspond to the cleft of buttocks in a state of being attached to the buttocks. Thus, the hip insertion portion is gently fitted to the gluteal cleft, and the wearing feeling is good.

On the other hand, in comparative example 1 in which the fixed protruding absorption portions were formed, the fit to the buttocks was good when wearing, but when sitting on the chair, the fixed protruding absorption portions were pressed together with the buttocks and pressed the shallow gluteal cleft, and thus a hard foreign body sensation was felt, which was inconvenient.

TABLE 2

5. Making a rim andunderpants with contraction part formed in corresponding direction of gluteal fold (the invention)

In order to produce the underpants with a contracted part of the present invention, the contracted part in the direction corresponding to the gluteal cleft was produced by contracting a length of 9cm from the back sewing line of the pad part of the ordinary underpants (control group) toward the back to 5.5 cm. Example 10 in which stretchable wrinkles were formed was produced by contracting the corresponding length with a stretchable rubber tape, and example 11 in which non-stretchable wrinkles were formed was produced with 4 slit wrinkles.

6. Comparison of degree of buttock fitting of individual sanitary napkins based on panties of the present invention

A medium-sized general sanitary napkin or a sanitary napkin provided with a plastic support strip (tape type/cap type) having a length of 24cm was attached to a general underpants, the underpants in example 10 or example 11, and the hip attachment degree of the sanitary napkin by each underpants was compared. The relative evaluation was performed after classifying the hip fit degree of the underpants-based sanitary napkin into 5 grades of poor, normal, good, excellent, etc., and the results thereof are shown in table 3.

In examples 10 and 11 of the present invention, not only the sanitary napkin of the present invention but also the ordinary sanitary napkin showed a good degree of fit to the buttocks (test example 4). The contracted portions corresponding to the buttocks of examples 10 and 11 exhibited the same results in terms of stretchability and non-stretchability for all sanitary napkins (test examples 4 to 9). On the other hand, in examples 10 and 11, unlike ordinary underpants, both the belt type and the cover type exhibited excellent hip-fit degrees (test examples 5 and 6, or test examples 8 and 9). In the case of ordinary underpants, since the underpants were not in a form of being stuck to the cleft of the buttocks, it is preferable to use the cap type plastic support strip (see table 2) so that the buttocks insertion portion of the sanitary napkin was not stuck to the underpants, and since the embodiment 10 and the embodiment 11 of the present invention are in a form of being stuck to the cleft of the buttocks, it is sufficient to use the band type, and it is not necessary to use the cap type plastic support strip, and it is found that the band type is rather preferable from the viewpoint of improving the fixing property of the sanitary napkin by enlarging the sticking portion with the underpants.

Finally, when either the sanitary napkin of the present invention or the underpants of the present invention are used, the degree of fitting of the buttocks is improved as compared with the case where neither the sanitary napkin of the present invention or the underpants of the present invention are used, and when the sanitary napkin of the present invention and the underpants of the present invention are used in combination, the degree of fitting of the buttocks of the sanitary napkin can be further improved.

TABLE 3

Test examples	Sanitary napkin	Underpants	Degree of buttock fitting
				Test example 1	Medium size (control group)	Common underpants (contrast group)	Is very poor
Test example 2	Example 1 (Belt type)	Common underpants (contrast group)	In general
				Test example 3	Example 2 (Cap type)	Common underpants (contrast group)	Good effect
Test example 4	Medium size (control group)	Example 10 (Telescopic constriction)	Good effect
				Test example 5	Example 1 (Belt type)	Example 10 (Telescopic constriction)	Is excellent in
Test example 6	Example 2 (Cap type)	Example 10 (Telescopic constriction)	Is excellent in
				Test example 7	Medium size (control group)	Example 11 (non-stretchable contraction portion)	Good effect
Test example 8	Example 1 (Belt type)	Example 11 (non-stretchable contraction portion)	Is excellent in
				Test example 9	Example 2 (Cap type)	Example 11 (non-stretchable contraction portion)	Is excellent in

7. Test for blocking menstrual blood flow to the back

The absorption pattern of menstrual blood was tested using the sanitary napkin of example 2 and/or the underpants of example 10. Questionnaires were conducted on 5 test subjects.

In summary of the contents of the questionnaire, the sanitary napkin in example 2 was first subjected to a separate test, that is, in the case of the test using the sanitary napkin and the ordinary underpants in example 2, although the foreign body sensation was slightly felt in the wearing sensation in the previous stage, the fit was quickly obtained and the wearing sensation was satisfied. The variability and the hip fit degree were all the requirements for variability and hip fit degree satisfied in the case of tight pants, but in the case of tight pants, when the pants were set up after sitting, the hip insertion portion was sometimes separated, and the hip fit degree was evaluated to be slightly decreased. On the other hand, when the underwear in example 10 was used for the same test subject evaluated to have a slightly decreased hip fit, the evaluation was that the degree of hip fit was very satisfactory.

In the evaluation of the underpants alone in example 10, although the buttocks insertion portion was not formed as in the sanitary napkin in example 2, since the sanitary napkin can be well fixed to the buttocks by the contraction portion corresponding to the cleft of the buttocks, it was evaluated as being satisfied.

As for the effect of blocking the menstrual blood flow to the back, all the persons who took a study evaluated that there was no menstrual blood flow to the back even when wearing ordinary underpants using the sanitary napkin of example 2, and the flow of menstrual blood to the back was blocked, and therefore, the evaluation was made that the psychological feeling was calm, and the menstrual blood did not spread to the periphery of the buttocks, and therefore, the evaluation was made that the sanitary napkin was comfortable and sanitary.

While the preferred embodiments of the present invention have been described above, it is obvious that the present invention is not limited to the specific embodiments described above, and those skilled in the art to which the present invention pertains can implement various modifications without departing from the spirit of the present invention. Therefore, the scope of the present invention should not be construed as being limited to the above embodiments, and is defined by the claims and the equivalents thereof.

Industrial applicability

The body fluid absorbent article of the present invention can be economically produced by using a simple and inexpensive member such as a flexible core as a plastic core, can be easily carried by being thinly packaged as in the conventional body fluid absorbent article, and can be easily manufactured by forming a simple structure in which a plastic core is added to the conventional body fluid absorbent article. Moreover, the plastic support strip of the present invention can be attached to any body fluid absorbent article as necessary to exhibit the same effect, and the manufacturing process is simpler. The pants according to the present invention can be produced by simply changing the structure of ordinary pants.

Description of reference numerals

10: buttocks part

12: gluteal fold

100: plastic support bar

110: plastic core material

120: joining member

130: cover part

140: dotted line

200: body fluid absorbent article

300: underpants

310: constriction

Claims

1. A plastic support strip for preventing body fluids from flowing to the back,

the method comprises the following steps:

a plastic core material with the length of 4cm to 15 cm; and

a combination component formed on one side of the outer skin for accommodating the plastic core material,

in the body fluid absorbent article, the coupling member is bonded to the body fluid absorbent article in a region corresponding to a region from the urethra to the coccyx in a direction crossing the gluteal groove.

2. The plastic support strip for preventing body fluids from flowing to the back of claim 1 further comprising a cover portion covering a portion of the panty attachment portion of said body fluid absorbent article in a direction perpendicular to the length of said plastic core.

3. The support strip of claim 2 wherein between 1 and 5 dotted lines are formed in said cover portion.

4. A body fluid absorbent article for preventing body fluid from flowing to the back,

in the body fluid absorbent article, a plastic core member is placed between the body-side liquid-permeable layer and the liquid-absorbent layer, between the liquid-absorbent layer and the outer non-liquid-permeable layer, inside a bag portion formed on the outer surface of the outer non-liquid-permeable layer, or in a position formed by a combination thereof,

the length of the plastic core material reaches 4cm to 15cm,

in the body fluid absorbent article, the plastic core material is placed in a region corresponding to a region from the urethra to the coccyx in a direction crossing the gluteal groove.

5. An underpants for preventing body fluid from flowing to the back,

use by sticking a body fluid absorbent article incorporating a plastic support strip according to any one of claims 1 to 3 or a body fluid absorbent article according to claim 4,

a constriction is formed in a region corresponding to a region from the urethra to the coccyx in a direction corresponding to the gluteal groove.

6. An underpants for preventing body fluid from flowing to the back,

the body fluid absorbent article is used by being stuck on the body fluid absorbent article,

a plastic support strip according to claim 1 incorporated in a direction across the gluteal groove in an area corresponding to the area from the urethra to the coccyx.