JP6261794B2 - Absorbent articles - Google Patents

Description

The present invention relates to an absorbent article made of a sanitary napkin or a panty liner for absorbing menstrual blood, vaginal discharge, etc., and relates to an absorbent article that fits the body and is difficult to twist and can easily follow the movement of the body. .

  Conventionally, as absorbent articles such as panty liners, sanitary napkins, incontinence pads, liquid-impervious back sheets such as polyethylene sheets or polyethylene sheet-laminated nonwoven fabrics, and liquid-permeable surface sheets such as nonwoven fabrics or liquid-permeable plastic sheets In this case, an absorbent body made of paper cotton such as pulverized pulp is interposed therebetween.

  Numerous improvements have been made to this type of absorbent article, and various measures have been taken to improve fit and prevent leakage. For example, in Patent Document 1 below, an absorbent body is provided between the liquid-permeable top sheet and the liquid-impermeable back sheet, and a notch portion formed in an intermediate portion in the width direction of both front and rear ends of the absorbent body; Provided in a region corresponding to the notch, and provided with a stretchable gather that can expand and contract in the opening and closing direction of the notch and bends the front and rear ends of the liquid-impervious backsheet toward the absorbent surface. An absorbent article is disclosed.

JP 2003-38553 A

  Particularly in the case of a panty liner, a thin type using, for example, an airlaid absorber is preferred as an absorber, and the length is 14 to 17 cm, which is often shorter than a sanitary napkin, and the rear end portion is worn when worn. Since it is worn with a little crack in the crotch buttocks, it is easy to get twisted due to movement of legs and buttocks during wearing. That is, when the left and right legs (buttocks) move differently during walking or the like, there is a problem that the center part in the width direction of the rear end portion of the panty liner covering the cracks of the buttocks tends to be twisted and prone. This twist caused discomfort during wearing.

  In the absorbent article described in Patent Document 1, since the expansion / contraction gathers are provided at the rear end, the expansion / contraction gathers may hit the cracks in the buttocks and cause discomfort at the time of wearing. Further, by providing the expansion and contraction gather, the notch portion is closed by the contraction force of the expansion and contraction gather, and the rear end portion of the absorbent article rises to some extent. In the case of walking, there is a problem that it becomes difficult to follow the movement of different legs (buttocks) on the left and right when walking.

  Then, the main subject of this invention is providing the absorbent article which eliminates the discomfort by twist and is easy to follow a motion of a body.

In order to solve the above problems, the present invention according to claim 1, in an absorbent article comprising a sanitary napkin or panty liner in which an absorbent is interposed between a liquid-permeable top sheet and a back sheet,
The absorber is formed with an absorber cutout only at the center in the width direction of the rear end.
Each of the liquid-permeable top sheet and the back sheet is provided with an absorbent article in which a sheet cutout is formed along the absorber cutout.

In the first aspect of the present invention, the absorbent body has an absorbent body notch formed only at the center in the width direction of the rear end portion, and the liquid-permeable top sheet and the back sheet are each along the absorbent body notch. Since the sheet notch portion is formed as described above, even if the rear end portion of the absorbent article is applied to the collar portion, the notch portion where the liquid-permeable surface sheet, the back sheet, and the absorber do not exist is located in the crack portion of the collar portion. As a result, there is no twist or wrinkle on the absorbent article at the cracked portion of the buttock due to the movement of the leg or buttock during wearing, and discomfort does not occur.

  Further, by providing the absorbent body cutout portion and the sheet cutout portion, the liquid permeable topsheet, the backsheet and the absorbent body are not interposed in the center in the width direction of the rear end portion of the absorbent article. Even if the buttocks move differently, the portions covering the left and right buttocks can be independently deformed, making it easier to follow the movement of the body such as the legs and buttocks.

  As a second aspect of the present invention, the absorber is more rigid than other portions in a region including at least a portion corresponding to the blood drainage port of the wearer in front of the absorber cutout portion. The absorbent article according to claim 1, which is provided with a high rigidity region formed as described above.

  In the invention according to claim 2, the rigidity is higher than the other parts in the region including at least the portion corresponding to the blood drainage port of the wearer in front of the absorber cutout portion of the absorber. By providing the formed high-rigidity region, even if the rear portion provided with the absorber cutout portion is deformed so as to follow the movement of the buttocks, the portion corresponding to the front blood discharge port portion may Wrinkles are suppressed, and it is easy to fit into the blood outlet.

  In the present invention, the “high rigidity region” means a region having relatively higher rigidity than other regions. In general, “rigidity” is an index value of difficulty in bending, and is defined by a cross-sectional shape (cross-sectional second moment) and a material softness (Young's modulus). Therefore, in the case of a homogeneous absorber, a cross-sectional shape, that is, a high rigidity region when the thickness is large. Further, even if the thickness is the same, if the density is higher than that of the other regions due to the compression processing by embossing, the material itself becomes hard, so that it becomes a highly rigid region.

  As this invention which concerns on Claim 3, the said absorber consists of an absorber element arrange | positioned by the left-right pair along the substantially longitudinal direction of an absorbent article, The site | part corresponded to a wearer's blood-removal opening part at least. The absorber element is stacked in a region including the high-rigidity region, and the absorber notch is formed by being spaced apart at the center in the width direction of the rear end portion. An absorbent article according to claim 2 is provided.

  In the third aspect of the invention, the first embodiment is defined as a specific configuration of the absorber. That is, the absorbent body is composed of a pair of left and right absorbent elements disposed along the substantially longitudinal direction of the absorbent article, and the absorbent elements are at least a portion corresponding to the blood drainage port of the wearer. The high-rigidity region is formed by stacking in a region including the absorber, and the absorber cutout portion is formed by being spaced apart from each other at the center in the width direction of the rear end portion. Thus, since the absorber which concerns on this 1st form example is comprised by arrange | positioning a separate absorber element on either side, it becomes easy to follow the movement of a different body on right and left, and the same shape Since the absorber can be manufactured by inverting one of the two absorber elements manufactured in the above and superimposing them in a predetermined area, the number of parts can be reduced and the manufacturing cost can be reduced.

  As the present invention according to claim 4, the absorber is laminated in a region including a lower layer absorber provided with the absorber notch and at least a portion corresponding to a blood drainage port of the wearer of the lower layer absorber. Thus, the absorbent article according to claim 2, which is constituted by an upper layer absorbent body that forms the high rigidity region.

  In the invention described in claim 4, the second embodiment is defined as a specific configuration of the absorber. In the second embodiment, the absorber is stacked in a region including a lower layer absorber provided with the absorber notch and at least a portion corresponding to a blood drainage port of the wearer of the lower layer absorber. Thus, the upper absorbent body forming the high-rigidity region is used. Thus, although the lower layer absorbent body is integrally formed with respect to the width direction of the absorbent article, the followability with respect to different body movements on the left and right is slightly inferior to the first embodiment, When the lower layer absorber is subjected to leg pressure from both sides in the width direction, both sides in the width direction of the lower layer absorber are pushed toward the center side in the width direction, causing deformation to enter the lower side of the upper layer absorber. Tends to be raised on the skin side, and adhesion to the body is easily secured.

  As the present invention according to claim 5, the absorber comprises a single-layer absorber provided with the absorber notch, and at least embossing is given to a region including a portion corresponding to the blood drainage port of the wearer. Thus, the absorbent article according to claim 2, wherein the high-rigidity region is formed.

  The invention according to claim 5 is a third embodiment of the absorbent body, and is constituted by a single-layer absorbent body provided with an absorbent body notch as the absorbent body, and at least the blood drainage port of the wearer. The high-rigidity region is formed by embossing a region including a portion corresponding to.

As the present invention according to claim 6, wherein the sheet cutout in the connecting portion between the side outline of the absorbent article, according to claim 1 to 5 or the R processing which is rounded corners are subjected An absorbent article is provided.

In the invention described in claim 6 , the corners are rounded so as not to give a sense of incongruity when the sheet notch contacts the skin.

As the present invention according to claim 7 , a slip-off adhesive layer is provided on the outer surface of the back sheet for preventing slippage from underwear, and the slip-stop adhesive layer includes the absorber notch and the sheet. The front side adhesive layer arrange | positioned ahead from a notch part, and the back side adhesive layer arrange | positioned spaced apart from this front side adhesive layer back, It is comprised in any one of Claims 1-6. An absorbent article is provided.

In the invention according to claim 7 , when a slip prevention adhesive layer is provided on the outer surface of the back sheet, the slip prevention adhesive layer is disposed on the front side of the absorber cutout portion and the sheet cutout portion. By configuring the adhesive layer and the rear adhesive layer arranged to be separated from the front adhesive layer on the rear side, the rear part and the front part of the absorbent article have different degrees of freedom of deformation. The rear part is easy to be deformed following the movement of the leg (buttock), while the front part is easy to be in close contact with the blood outlet.

  As described above in detail, according to the present invention, it is possible to provide an absorbent article that eliminates discomfort due to twisting and easily follows the movement of the body.

It is a partial fracture development view of panty liner 1 concerning the present invention. It is the II-II arrow directional view. It is the III-III arrow directional view of FIG. FIG. 4 is an exploded perspective view of the absorber 4. (A), (B) is a top view of the absorber 4. FIG. It is a disassembled perspective view of the absorber 4 which concerns on a 2nd form example. 3 is a cross-sectional view of the absorber 4. FIG. It is a perspective view of the absorber 4 which concerns on a 3rd form example. 2 is an enlarged view showing a rear side portion of the panty liner 1. FIG. 2 is a rear view of the panty liner 1. FIG. 2 is a rear view of the panty liner 1. FIG. 2 is a rear view of the panty liner 1. FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[Basic configuration of panty liner 1]
As shown in FIGS. 1 and 2, the panty liner 1 according to the present invention has a liquid-impervious back sheet 2 made of a polyethylene sheet, a polypropylene sheet, and the like, and a liquid-permeable material that quickly permeates menstrual blood, cages, and the like. The absorbent surface sheet 3, the absorbent body 4 made of cotton-like pulp or synthetic pulp interposed between the two sheets 2 and 3, and the absorbent body 4 for maintaining the shape of the absorbent body 4 and improving the diffusibility. The crepe paper 5 is surrounded, and side nonwoven fabrics 7 and 7 are disposed on both sides of the surface along the longitudinal direction. Around the absorbent body 4, at the front and rear end edges in the longitudinal direction of the liner, the outer edge portion of the liquid-impermeable back sheet 2 and the liquid-permeable surface sheet 3 is made of an adhesive such as hot melt or heat seal. The liquid-impervious back sheet 2 and the side nonwoven fabric 7 which are joined by an adhesive means and extend laterally from the edge of the absorbent body 4 at both side edges thereof are adhesives such as hot melt or heat. The outer periphery flap part in which the absorber 4 does not exist is formed on the outer periphery by being bonded by an adhesive means such as a seal. Further, an embossing 9 for sealing is applied to the outer peripheral flap portion at the front end portion, and a sealing emboss 8 is applied to the outer peripheral flap portion at the rear end portion.

Hereinafter, the structure of the panty liner 1 will be further described in detail.
As the liquid-impermeable back sheet 2, a sheet material having at least water shielding properties such as an olefin resin sheet such as polyethylene or polypropylene is used. In addition, a laminated nonwoven fabric obtained by laminating a nonwoven fabric on a polyethylene sheet or the like, or A nonwoven fabric sheet (in this case, the waterproof film and the nonwoven fabric constitute a liquid-impervious back sheet) can be used after substantially impervious to liquid imperviousness by interposing a waterproof film. In recent years, those having moisture permeability tend to be used from the viewpoint of preventing stuffiness. This water- and moisture-permeable sheet material is a microporous sheet obtained by forming a sheet by melting and kneading an inorganic filler in an olefin resin such as polyethylene or polypropylene, and then stretching in a uniaxial or biaxial direction. It is.

  Next, as the liquid-permeable surface sheet 3, a porous or non-porous nonwoven fabric or a porous plastic sheet is preferably used. Examples of the material fibers constituting the nonwoven fabric include synthetic fibers such as polyethylene or polypropylene, synthetic fibers such as polyester and polyamide, recycled fibers such as rayon and cupra, and natural fibers such as cotton. A nonwoven fabric obtained by an appropriate processing method such as a lace method, a spun bond method, a thermal bond method, a melt blown method, or a needle punch method can be used. Of these processing methods, the spunlace method is excellent in terms of flexibility and the spunbond method is excellent in drapeability, and the thermal bond method and the air-through method are excellent in terms of being bulky and soft.

  The absorbent body 4 interposed between the liquid-impervious back sheet 2 and the liquid-permeable top sheet 3 is, for example, a mixture of a superabsorbent resin in pulp or a mixture of chemical fibers in the pulp. A high water-absorbing polymer is used. The absorber 4 will be described in detail later. The absorbent body 4 can be surrounded by crepe paper (not shown) in order to maintain the shape and quickly diffuse menstrual blood and to prevent the menstrual blood and the like once absorbed.

  Examples of the pulp include chemical fibers obtained from wood, cellulose fibers such as molten pulp, and those made of artificial cellulose fibers such as rayon and acetate. It is preferably used in terms of price. In the thin panty liner targeted by the present invention, the absorbent body 4 manufactured by the airlaid method is used. Further, as the superabsorbent polymer, superabsorbent polymer granular powder (SAP) or superabsorbent polymer fiber (SAF) can be used.

  On the other hand, side non-woven fabrics 7 and 7 are provided on both sides of the front side of the panty liner 1 along the longitudinal direction and almost the entire length of the liner 1. The side nonwoven fabrics 7 and 7 are extended laterally, and a side flap portion is formed by the liquid-impervious back sheet 2 that is also extended laterally. It is formed in a curved line shape that is convex toward the center in the width direction, and the central part in the longitudinal direction is formed in a wave shape in which concave parts and convex parts are alternately arranged along the outline.

  As the side nonwoven fabric 7, a water-repellent treated nonwoven fabric or a hydrophilic treated nonwoven fabric can be used from the viewpoint of an important function. For example, if importance is placed on functions such as preventing the penetration of bodily fluids or enhancing the feeling of touch, it is necessary to use a water-repellent non-woven fabric coated with a silicon-based, paraffin-based, or alkylchromic chloride-based water repellent. desirable. Further, if importance is attached to the absorbability of body fluid in the side nonwoven fabric 7, a method of polymerizing a compound having a hydrophilic group, for example, an oxidation product of polyethylene glycol, in the process of producing a synthetic fiber, or stannic chloride Treatment with a metal salt, such as by partially dissolving the surface to make it porous and depositing metal hydroxide, etc. It is desirable to use a nonwoven fabric.

  The absorber 4 is formed with an absorber notch 10 in which no absorber exists at the center in the width direction of the rear end. The liquid-permeable top sheet 3 and the liquid-impervious back sheet 2 are each formed with a sheet notch 11 that does not have the sheets 2 and 3 along the absorber notch 10. In the absorber cutout portion 10, the liquid-permeable top sheet 3 and the liquid-impervious backsheet 2 are provided so as to extend from the absorber 4 to the inside of the absorber cutout portion 10, respectively. The liquid-permeable top sheet 3 and the liquid-impervious back sheet 2 are joined together by the sealing emboss 8 at the existing portion.

  By providing the absorber cutout portion 10 and the sheet cutout portion 11 at the center in the width direction of the rear end portion of the panty liner 1, even if the rear end portion of the panty liner 1 is applied to the collar portion at the time of mounting, Since the liquid-permeable topsheet 3, the liquid-impervious backsheet 2 and the absorbent body 4 do not exist, the cutout portions 10 and 11 are positioned. The liner 1 is free from wrinkles and wrinkles, and uncomfortable feeling does not occur.

  Moreover, since the liquid-permeable surface sheet 3, the liquid-impermeable back sheet 2, and the absorber 4 are not interposed in the center in the width direction of the rear end portion of the panty liner 1, the legs and the buttocks move differently on the left and right. However, the rear portions of the panty liner 1 covering the left and right buttocks can be independently deformed, and it is easy to follow the movement of the body such as the legs and buttocks.

  The absorbent body 4 is formed on the front side of the liner from the absorbent body cutout portion 10 and at least in a region including a portion corresponding to the blood drainage port of the wearer so as to have higher rigidity than other portions. A rigid region 4a is provided. By providing this high-rigidity region 4a, even if the rear portion of the liner provided with the absorber cutout portion 10 is deformed so as to follow the movement of the buttocks, the portion corresponding to the front blood discharge port portion has rigidity. Because it is raised, twist and wrinkles are suppressed, and it is easy to fit into the blood drainage area.

  The structure of the absorbent body 4 will be described in more detail. As the first embodiment of the absorbent body 4, the absorbent body 4 extends along the substantially longitudinal direction of the panty liner 1 as shown in FIGS. 1 to 4. The absorber elements 4A and 4B are arranged in a pair on the left and right sides, and the absorber elements 4A and 4B are laminated in a region including at least a portion corresponding to the blood drainage port of the wearer to thereby achieve the high rigidity. The region 4a is formed, and the absorber elements 4A and 4B are arranged apart from each other at the center in the width direction of the rear end portion, whereby the absorber notch portion 10 is formed. The absorber elements 4A and 4B are preferably joined by a joining means such as a hot melt adhesive in the high rigidity region 4a.

  The absorber elements 4A and 4B arranged in a pair on the left and right sides are manufactured in the same shape, and the front and back of one absorber element are reversed in the width direction and overlapped in a predetermined high rigidity region 4a. Are arranged. The planar shape of each absorber element 4A, 4B is a substantially oval shape in plan view formed in a circular arc shape in which both side edges are formed in a straight line and front and rear end edges bulge outward. From the intermediate position to the intermediate position of the rear end edge on the other side across the width direction center line CL. When the absorber elements 4A and 4B are laminated such that one of the absorber elements is reversed and the front side edges are aligned, the predetermined region on the front side becomes the high rigidity region 4a of the absorber elements 4A and 4B. The absorber elements 4A and 4B are respectively arranged on both sides of the rear side, and further, the absorber notch 10 in which the absorber elements 4A and 4B are separated from each other in the lateral direction is formed at the center in the width direction of the rear end. Become. The planar shape when the absorbent elements 4A and 4B are overlapped may be formed such that the front and rear end edges are linear along the liner width direction, and both side edges are inside the base of the leg. You may form so that it may become the circular arc shape bulged inside according to the shape.

  In the absorbent body 4 according to the first embodiment, the left and right absorbent body elements 4A and 4B are arranged in the rear part that is particularly susceptible to the movement of the legs and buttocks. It becomes easy to follow. Moreover, since the absorber 4 can be manufactured by using what was manufactured with the same shape as the left and right absorber elements 4A and 4B, and inverting one absorber element and stacking with the other absorber element, The common use makes it possible to reduce the number of parts and the manufacturing cost.

  By forming each absorber element 4A, 4B in the above-described planar shape, the absorber notch 10 is formed in a V-shape that gradually narrows linearly from the rear end of the liner toward the front. Become so. The high-rigidity region 4a is linearly gradually toward a front side corresponding to a line in which both side edges of the absorber notch 10 are extended to the front with the top on the front side of the absorber notch 10 as a base point. It is formed to have a V-shaped rear end edge that is wide.

  In this way, by forming the high-rigidity region 4a with the top of the absorber notch 10 as the base point, the V-shaped top of the absorber notch 10 is mounted in accordance with the start point on the crotch side of the crevice crack. In the rear part from the starting point of the crack of the buttocks, the absorbent body elements 4A and 4B are respectively disposed on both sides of the absorbent body cutout section 10, so that each absorbent body element is adapted to the movement of the body different on the left and right. 4A and 4B are deformed separately to make it easier to follow the movement of the body, and at the front part from the starting point of the crevice of the buttocks, the interval between the base parts of both legs gradually increases toward the front side. Since the rear end edge of the high-rigidity region 4a is gradually formed wider, the panty liner 1 can be easily fitted to the blood drainage port, and the high-rigidity region 4a is formed with the rear-end edge of the high-rigidity region 4a as a fold line. Raised on the skin side That deformation is liable to occur, adhesion between the body can be more reliably ensured.

  As a modification of the first embodiment, the configuration shown in FIG. 5 can be adopted. In FIG. 5 (A), each of the absorber elements 4A and 4B has a substantially oval shape in plan view similar to the above, and straddles the center line CL in the width direction from the corner of one side edge and the front side edge. It has a shape cut obliquely and linearly in the middle of the rear edge of the other side. As a result, the absorber elements 4A and 4B are each formed on one side layer on both side edges, and the triangular (or fan-shaped) region between the front end edge and the top of the absorber notch 10 is It is set as the highly rigid area | region 4a on which absorber element 4A, 4B was laminated | stacked.

  In FIG. 5 (B), each of the absorber elements 4A and 4B is formed such that one side edge is formed closer to the center line CL in the width direction than that of the oblong shape in plan view. From the intermediate position to the intermediate position of the rear side edge on the other side across the center line CL in the width direction, it has a shape cut obliquely and linearly. As a result, on both side edges, a single layer in which the absorber elements 4A and 4B are respectively arranged is formed, and a high-rigidity region 4a in which the absorber elements 4A and 4B are laminated is formed in the center portion in the width direction.

  As a 2nd form example of the absorber 4, as FIG. 6 shows, the said absorber 4 is the lower layer absorber 4C in which the said absorber notch part 10 was provided, and at least a wearer of the said lower layer absorber 4C The upper absorbent body 4D is laminated in a region including a portion corresponding to the blood drainage port portion and is joined with a hot melt adhesive or the like as necessary to form the high rigidity region 4a. The lower layer absorbent body 4C is formed in a substantially oval shape in plan view having an outer shape in which both side edges are linear and front and rear end edges are bulged outwardly, and at the center in the width direction of the rear end. Absorber cutout 10 is formed. On the other hand, the upper layer absorbent body 4D is formed in a planar shape corresponding to the high rigidity region 4a of the first embodiment. That is, in the example shown in FIG. 6, the outline line from the front edge of the lower layer absorber 4C to the middle position of both side edges coincides with the lower layer absorber 4C, and the rear side edge extends from the middle position of both side edges to the lower layer. It is formed by an outline that gradually narrows linearly toward the top of the absorber cutout 10 of the absorber 4C.

  In the absorbent body 4 according to the second embodiment, since the lower layer absorbent body 4C is integrally formed in the width direction, the followability to body movements that are different on the left and right compared to the absorbent body 4 according to the first embodiment. Although it is a little inferior, it comes to be excellent in adhesiveness with the skin when it receives leg pressure from both sides in the width direction. In detail, as shown in FIG. 7, when leg pressure is applied from both sides in the width direction, both side portions in the width direction of the lower layer absorbent body 4C are pushed toward the center side in the width direction so as to enter the lower side of the upper layer absorbent body 4D. Therefore, the central part in the width direction is likely to rise to the skin side, and the adhesion to the body is easily secured.

  The upper absorbent body 4D can be formed in a planar shape corresponding to the high-rigidity region 4a shown in FIGS. 5A and 5B described in the other embodiments of the first embodiment. is there.

  Further, as a third embodiment of the absorber 4, as shown in FIG. 8, the absorber 4 is composed of a single layer absorber 4E provided with the absorber notch 10, and the absorber 4E By embossing the high-rigidity region 4a, it is formed with higher rigidity than other parts. The area | region which provides the said embossing is an area | region where absorber element 4A, 4B demonstrated in the said 1st form example is laminated | stacked. Embossing such as dots and lines is given to this region in an appropriate pattern. The embossing is preferably provided over the entire surface of the laminated region of the absorber elements 4A and 4B shown in the first embodiment, but may be provided in a part of the laminated region. When it is provided in a part, it is provided in a predetermined area on the front side and the rear side with the center in the longitudinal direction of the product. If the range from the center in the product longitudinal direction to the front side is a and the range from the center in the product longitudinal direction to the rear side is b, it is preferable to provide a range of a ≧ b.

  Next, the sheet notch portion 11 will be described in detail. The sheet notch portion 11 has a liquid-permeable topsheet 3 that gradually decreases in width from the outline of the rear edge of the panty liner 1 toward the front side. In addition, the liquid-impervious back sheet 2 is cut out, and both side edges are formed in a straight line substantially parallel to the side edges of the absorber cut-out 10.

  It is preferable that the sheet notch portion 11 is subjected to R processing with rounded corners at the connection portion with the outline of the rear edge of the panty liner 1. Since this part is a part that contacts the buttocks at the time of wearing, if there is a sharp corner in this part, there is a possibility of hurting the skin or causing a sense of incongruity. The size of the R processing is R3 to R10 mm, preferably about R5 to R8 mm.

  In the present panty liner 1, the rigidity of the rear flap portion (the distance between the absorbent body 4 and the liner outline) is particularly low and the flatness of the flat portion is reduced. It is preferable to form by. Specifically, the distance between the absorber 4 and the outer peripheral seal portion is 2 to 12 mm, preferably 2 to 7 mm. If it is smaller than 2 mm, it becomes difficult to form the outer peripheral seal portion, and if it is larger than 12 mm, the flap portion will flicker.

  As shown in FIG. 9, the dimension of the sheet notch 11 is such that the length L from the rear end of the panty liner 1 to the top of the notch 11 is 10% or more and 27% or less of the entire length of the panty liner. Desirably, it should be 11% or more and 24% or less. Further, the width W of the cutout portion 11 (interval between the liner rear end portions on both sides of the cutout portion 11) W is 15 to 40 mm, preferably 20 to 30 mm.

  By the way, as shown in FIG. 10 and FIG. 11, a slip prevention adhesive layer 12 is provided on the outer surface of the liquid-impermeable back sheet 2 to prevent slippage from the underwear when worn. The anti-displacement adhesive layer 12 is disposed after a front adhesive layer 12a disposed on the front side of the liner with respect to the absorber cutout portion 10 and the sheet cutout portion 11, and after being disposed on the rear side with respect to the front adhesive layer 12a. It is preferable to form discontinuously on the front side and the rear side by the side pressure-sensitive adhesive layer 12b. This increases the degree of freedom in which the rear portion and the front portion of the panty liner 1 are separately deformed, and the liner rear portion is easily deformed with the movement of the legs (buttocks), while the front portion is exfoliated. It becomes easy to adhere to the mouth. The front pressure-sensitive adhesive layer 12 a is provided in front of the sheet cutout portion 11, and the rear pressure-sensitive adhesive layer 12 b is provided on substantially both sides of the sheet cutout portion 11.

  In the example shown in FIG. 10, the front pressure-sensitive adhesive layer 12a is provided substantially along the longitudinal direction of the liner, and the rear pressure-sensitive adhesive layer 12b is substantially parallel to the side edge of the absorber cutout portion 10 (sheet cutout portion 11). It is provided along the direction. In FIG. 10 (A), as the rear pressure-sensitive adhesive layer 12b, a plurality of thin linear ones are spaced apart and two in the illustrated example. Further, in FIG. 10B, one wide band-shaped material is disposed as the rear pressure-sensitive adhesive layer 12b.

  In the example shown in FIG. 11, the front pressure-sensitive adhesive layer 12a and the rear pressure-sensitive adhesive layer 12b are provided substantially along the liner width direction.

  In the example shown in FIGS. 10 and 11, the front vertex 11a of the sheet notch 11 and the rear end of the front pressure-sensitive adhesive layer 12a are separated from each other to the front. If the leg is moved largely back and forth by walking on the crotch or the like, the separating portion is moved from the apex 11a of the sheet notch portion 11 to the liquid-permeable surface sheet 3 and the impervious portion. The liquid back sheet 2 may be torn. Therefore, as shown in FIG. 12, at least the front pressure-sensitive adhesive layer 12 a disposed at the center in the width direction has the rear end at the vertex 11 a of the sheet notch 11 and the vertex 11 a of the sheet notch 11. It is desirable that the front side adhesive layer 12a and the rear side end of the front side adhesive layer 12a are arranged so as not to be separated in the longitudinal direction of the liner. Thereby, it is possible to prevent the liquid-permeable top sheet 3 and the liquid-impervious back sheet 2 from being torn with the vertex 11a of the sheet notch 11 as a base point.

  In producing the panty liner 1 having the above-described configuration, after the absorbent body 4 is surrounded by the crepe paper 5, the crepe paper 5 of the absorbent body notch 10 portion and, if necessary, the absorbent body 4 are cut, It mounts on the upper surface of the liquid-impermeable back sheet 2, and the liquid-permeable surface sheet 3 and the side nonwoven fabrics 7 and 7 are mounted on the upper surface. Adhesion with an adhesive and / or heat seal bonding is appropriately performed on the outer peripheral flap portion, and cutting is performed by a cutter device along the outline of the panty liner 1 including the sheet notch portion 11.

  DESCRIPTION OF SYMBOLS 1 ... Panty liner, 2 ... Liquid impervious back surface sheet, 3 ... Liquid permeable surface sheet, 4 ... Absorber, 4A * 4B ... Absorber element, 4C ... Lower layer absorber, 4D ... Upper layer absorber, 4E ... Absorption Body, 4a ... High rigidity region, 7 ... Side nonwoven fabric, 10 ... Absorber notch, 11 ... Sheet notch 11

Claims (7)

In an absorbent article comprising a sanitary napkin or a panty liner in which an absorbent is interposed between a liquid-permeable top sheet and a back sheet,
The absorber is formed with an absorber cutout only at the center in the width direction of the rear end.
Each of the liquid permeable top sheet and the back sheet has a sheet notch formed along the absorber notch, respectively.   The absorber is a front side of the absorber notch, and includes a high rigidity region formed so as to have higher rigidity than other portions in a region including at least a portion corresponding to the blood drainage port of the wearer. The absorptive article according to claim 1 provided.   The absorbent body is composed of a pair of left and right absorbent elements arranged substantially along the longitudinal direction of the absorbent article, and the absorbent element is laminated in a region including at least a portion corresponding to a blood drainage port of a wearer. 3. The absorbent article according to claim 2, wherein the absorbent article is formed by forming the high-rigidity region and separating the left and right sides at the center in the width direction of the rear end portion.   The high-strength region is formed by laminating the absorber in a region including a lower layer absorber provided with the absorber notch and a region corresponding to at least a blood drainage port of a wearer of the lower layer absorber. The absorbent article of Claim 2 comprised from the upper layer absorber formed.   The absorbent body is composed of a single-layer absorbent body provided with the absorbent body notch, and the high rigidity region is formed by embossing at least a region including a portion corresponding to a blood drainage port of a wearer. The absorbent article of Claim 2 currently formed. The absorbent article according to any one of claims 1 to 5 , wherein the sheet notch is subjected to R processing with rounded corners at a connection portion with a rear outline of the absorbent article. A slip-preventing adhesive layer is provided on the outer surface of the back sheet to prevent misalignment with underwear, and the slip-preventing adhesive layer is disposed on the front side of the absorber notch and the sheet notch. The absorbent article in any one of Claims 1-6 comprised from the adhesive layer and the back side adhesive layer spaced apart and arrange | positioned back from this front side adhesive layer.

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