JP4693847B2 - Absorbent article and manufacturing method thereof - Google Patents

Description

The present invention relates to an absorbent article, and more particularly to a thin absorbent article suitable for absorbing a relatively small amount of excretory fluid such as a panty liner and a method for producing the same .

Panty liners used for the treatment of cages and the like have few body fluids to be treated, so a large absorption capacity is not required, but they must perform an absorption function, and because they are used on a daily basis, It is preferred that there is little wearing feeling. Furthermore, it is preferable that there is a design aesthetic for the comfort of the wearer. Therefore, as described in Patent Document 1 and Patent Document 2 below, the conventional panty liner has a narrow and small shape that fits the crotch portion of the shorts, and uses a thin absorbent body. The overall thickness is thin, and the surface material layer is often made of a non-woven fabric of a relatively bulky and large number of voids that is soft and has good liquid permeability.
JP 2001-145669 A JP 2001-231816 A

  As described above, since the conventional panty liner is small and has a narrow absorption region, there is a case where the absorption function is not sufficient even in the treatment of a small amount of body fluid.

  In order to prevent this, it is conceivable to increase the absorption performance by increasing the thickness of the absorbent body. However, in this case, the thickness of the entire liner is increased, so that the wearing feeling is deteriorated. In view of this, there is one in which a relatively thick absorber is disposed at a substantially central portion in the width direction of the liner to improve the absorption performance without deteriorating the wearing feeling. However, in such a conventional example, since the absorbent body is disposed on substantially the entire central portion of the liner, the body fluid that has traveled through the surface material layer is notably the end portion in the widthwise direction of the liner in the central portion in the longitudinal direction. May ooze to the side.

  Moreover, in the thing of the said patent document 1, in order to improve the permeability | transmittance of the liquid in a surface material layer, the hole which permeate | transmits a liquid is provided in the whole said surface material layer. However, if the entire surface material layer is provided with holes, the body fluid permeates the surface material layer at the side portion away from the absorbent body, so that the body fluid tends to leak to both sides of the liner. In addition, since the aperture is formed only in the surface material layer, the liquid that has passed through the aperture tends to flow sideways along the surface of the absorber at the boundary between the absorber and the surface material layer. May cause side leakage.

The present invention has been devised in view of the above-described prior art, and an absorbent article capable of effectively preventing body fluid from oozing out to the end in the width direction of the absorbent article, and its manufacture It aims to provide a method .

Accordingly, the present invention includes a liquid-permeable surface material layer, a liquid impermeable back material layer, the absorbent article having a arranged absorber between the two material layers,
The surface material layer is formed of a nonwoven fabric whose bulk has been recovered by hot air treatment,
The absorbent body has a narrower width dimension than the surface material layer and the back surface material layer, and a side edge portion extending in a longitudinal direction of the absorber is positioned inside a side edge portion of the surface material layer and the back surface material layer. And
When the region where the absorber is provided is a central region, and the side region between the side edge of the absorber and the side edge of the surface material layer and the back surface material layer,
Embossed compression parts that compress only the surface material layer are formed on both sides of the central region, and are formed continuously in the longitudinal direction or arranged in the longitudinal direction . It is configured to have a width dimension extending from the central region to the side region, straddling each side edge of the absorber .

  According to such a configuration, the body fluid transmitted through the surface material layer is absorbed by the absorbent body and effectively prevented from exuding to both ends in the width direction by the embossed compression portion substantially continuous in the longitudinal direction of the absorbent body. Is done. Thereby, the absorbent article which can prevent effectively that a bodily fluid oozes out to the width direction edge part side of an absorbent article is obtained.

In the present invention , since the embossed compression part is located on both sides of the absorbent body, the body fluid is prevented from oozing out to both sides in the width direction by the embossed compression part, and the absorption located below the body fluid is prevented. Be sure to be absorbed by the body. In addition, since the region where the embossed compression portion is formed is a range from the central region having the absorber to the side region, the region between the embossed compression portions on both sides is not narrowed, and the embossed compression portion A wide area of the sandwiched absorption region can be secured.

  In the present invention, the embossed compression part includes a continuous linear compression part, and preferably, the embossed compression part is a type in which the linear compression part continuously surrounds a non-compression part. Or it has two or more types of pattern patterns, and these pattern patterns are arranged in the longitudinal direction.

  According to such a configuration, since the embossed compression part is a continuous linear embossed part, the exudation of body fluid is effectively prevented. In addition, if the linear compression part has a pattern pattern that continuously surrounds the periphery of the non-compression part, the non-compression part surrounded by the linear compression part has a function of blocking exudation of the body fluid in the flower direction outside. High performance.

  The pattern pattern is a leaf-shaped pattern or other designed pattern. According to such a configuration, an embossed compression portion and an external appearance can be obtained.

  In the present invention, the central region is formed with a large number of perforations that are opened from the surface material layer to the absorber. More preferably, the apertures are dispersed in a region between the embossed compression portions located on both sides, and all the apertures are provided at positions away from the embossed compression portions. .

According to such a configuration, absorption of body fluid into the absorber is promoted through the openings formed in the surface material layer. In particular, when the apertures are dispersed in a range where they do not contact the embossed compression parts on both sides, the body fluid is prevented from spreading laterally by the embossed compression parts on both sides, and the body fluid is in the region between the embossed compression parts. Is immediately absorbed by the absorber through the permeation holes. Therefore, it becomes possible to more effectively prevent the leakage of body fluid to the side.
Moreover, the manufacturing method of the absorbent article of the present invention comprises a surface material layer formed with an embossed compression portion that recovers the bulk of a liquid-permeable nonwoven fabric with hot air and is continuous in the longitudinal direction or arranged in the longitudinal direction. Forming, and
A step of disposing an absorber having a narrower width dimension than the surface material layer and the back surface material layer between the surface material layer and the liquid-impermeable back surface material layer;
Absorbency in which a side edge portion extending in the longitudinal direction of the absorbent body is located inside a side edge portion of the surface material layer and the back surface material layer, and the embossed compression portion is located in the vicinity of the side edge portion of the absorbent body. An article is manufactured.

  A liquid-permeable nonwoven fabric surface material having an embossed compression portion by heat embossing in a specific pattern on a portion of the absorbent body of the liquid-permeable surface material layer in the vicinity of both side edges in the longitudinal direction or on the outside of the absorbent body. By using the layer, the embossed compression part acts as a barrier to the body fluid that has diffused the surface material layer in the lateral direction to prevent side leakage (exudation), and the body fluid flows toward the absorber below the absorber. To be absorbed. Even if it is a discontinuous embossing pattern, most bodily fluids will encounter an embossing compression part in the part near the absorber side edge, and will flow toward an absorber.

  Since the amount of excretory fluids targeted by panty liners and the like is not large, even if there are some gaps where there is no embossed compression part, side leakage and oozing are almost prevented.

  Moreover, since the embossed compression part of the present invention is present either on the absorber side edge of the surface material layer or in the vicinity of the outer side thereof, it does not hinder the transfer of excretory fluid from the surface material layer to the absorber. The almost entire surface of the absorber is effectively used for absorbing body fluids. Furthermore, since the embossed compression part is hot-embossed only on the surface material layer, there is little influence on the rigidity of the entire absorbent article.

  And, the heat embossing of the surface material layer of the present invention can apply the emboss of various designs to the surface material layer that looks externally, resulting in the appearance aesthetics of the absorbent article. A feeling can be given.

Moreover, over substantially the entire region inside the existing portion of the embossed pattern of the surface material layer in the region where the presence of the absorber, by opening many small transmission hole extending from the surface material layer in the absorbent body, fluid Permeation to the absorbent is promoted, and combined with the effect of preventing lateral leakage (exudation) of the embossed pattern in the vicinity of both side edges of the surface material layer, the leakage preventive and absorbent properties of the absorbent article of the present invention Will increase further.

  Hereinafter, an embodiment of the present invention will be described based on an example of an absorbent article of the present invention with reference to the drawings. 1A is a schematic cross-sectional view in which the longitudinal center of the absorbent article is cut in the width direction, FIG. 1B is a partially enlarged view thereof, FIG. 2A is a plan view, and FIG. ) Is a partially enlarged view thereof.

  The absorbent article of the present invention is a thin article suitable for absorbing a relatively small amount of body fluid, that is, a substance excreted from a female genital organ, a small amount of menstrual blood, etc., and is called a panty liner. is there. This absorbent article basically has a liquid-permeable surface material layer 1, a liquid-impermeable back material layer 2, and an absorber 3 narrower than both layers interposed therebetween. The liquid-permeable surface material layer 1 and the liquid-impermeable back material layer 2 are joined by a joining means 4 such as a heat seal at the peripheral edge of the absorbent article to form a leak-resistant seal. Yes. Moreover, the adhesive 5 for stopping the said absorbent articles, such as a panty liner, to the crotch part of shorts is provided in the back side of the liquid-impermeable back surface material layer 2. As shown in FIG.

(Surface material layer)
The liquid-permeable surface material layer 1 in this embodiment is a low-density liquid-permeable nonwoven fabric that is soft and relatively bulky and has many voids, such as an air-through nonwoven fabric. In order to improve the touch and bulkiness, a plurality of the above-mentioned relatively bulky nonwoven fabrics with many voids may be used in piles.

The surface material layer 1 has a basis weight of 20 to 60 g / m ² (single layer or multilayer total basis weight), a density of 0.12 g / cm ³ or less, and a surface smoothness made by KES (Kato Tech Co., Ltd.). Those having an SMD (variation of surface irregularities) measured by a testing machine of 4.5 μm or less are preferably used. The SMD is the average deviation of the surface roughness and is the same concept as the center line average roughness. That is, in the cross section of the measurement portion, the thickness difference between the average center line of the surface roughness and the surface is integrated in the range of the distance X, and the integrated value is divided by X. In the surface smoothness tester, a contact obtained by bending a piano wire having a diameter of 0.5 mm is brought into contact with the surface of the material with a force of 98 mN, and measurement is performed in a length X = 2 cm range.

As the surface material layer 1, an air-through nonwoven fabric is preferably used because it is bulky and can provide more voids than other nonwoven fabrics (spunbond, spunlace, etc.). For example, when using overlapped two sheets of through-air bonded nonwoven fabric, the basis weight of each nonwoven fabric was 25 g / m ^2, polyethylene terephthalate (1.0% of titanium oxide) - polyethylene core-sheath composite thermoplastic fibers (2 denier X44 mm) is used. The air-through non-woven fabric was treated with hot air at 115 ° C for 1 minute, and the thickness was changed from 0.5mm to 1. It is preferable to use Omm bulk recovered. Since the fibers constituting the nonwoven fabric have titanium oxide added to the core portion of the core-sheath structure, the surface slipperiness and draping properties are higher and the texture is better than those containing no titanium oxide.

  When only one nonwoven fabric is used for the surface material layer 1, it is necessary to have a high weight to make it bulky, and it tends to give a feeling of tingling, and conversely, when three or more nonwoven fabrics are stacked, they are bonded together Therefore, the hardness by sticking means, such as a hot melt adhesive, comes out. Accordingly, the surface material layer 1 is preferably used by stacking two air-through nonwoven fabrics, and more preferably using two air-through nonwoven fabrics bonded together by as few bonding means as possible. However, as long as the physical properties are suitable for the surface layer, only one sheet or three or more stacked layers can be used.

  In the present invention, the greatest feature point for obtaining the effect is that the embossed compression portion 7 is formed on the liquid-permeable surface material layer 1. The embossed compression portion 7 is formed by subjecting a portion corresponding to the upper side of the absorbent body 3 or the outer side of the absorbent body 3 in the vicinity of both side edges 6 extending in the longitudinal direction of the absorbent body 3 to a specific pattern. Preferably, the embossed compression portion 7 occupies a range extending from above both side portions of the absorbent body 3 to a region crossing the both side edge portions 6 and coming off from the absorbent body 3.

  In the embodiment shown in FIG. 2, the embossed compression portions 7 are arranged at intervals in the longitudinal direction, and the embossed compression portions 7 are formed to have a pattern that is substantially continuous in the longitudinal direction. ing. Here, in the present specification, the pattern substantially continuous in the longitudinal direction means that the surface material layer 1 is traced on both side edges 6 and 6 of the absorber 3 in the longitudinal direction with respect to the side edges 6 and 6. When viewed in a right-angle direction, in the entire range of the side edges 6 and 6, or in the most range, preferably in the range of 80% or more, more preferably in the range of 90% or more, The embossed compression part 7 exists on the absorber 3 which is in the vicinity or in a region outside the side edges 6 and 6, preferably in a region crossing the side edges 6 and 6 in the width direction. Means.

  Such an embossed compression part 7 is formed by hot embossing processing, and at least a part thereof is a continuous curved or linear linear compression part. All of the embossed compression units 7 may be linear compression units, or may be a mixture of linear compression units and dot-like compression units. In the example shown in FIG. 2, the periphery of the non-compressed portion 18 is continuously surrounded by the linear compression portion 7a, and a leaf-like pattern is drawn by the linear compression portion 7a. The uncompressed portion 18 is not compressed at all, or is substantially compressed when the linear compression portion 7a is formed, but the degree of compression is sufficiently higher than that of the linear compression portion 7a. It means a weak state.

  Moreover, the pattern pattern drawn by the embossing compression part 7 which is the linear compression part 7a may be a pattern in which a circular shape, a star shape, a petal shape, or the like is continuous. Or, for example, as in the modification shown in FIG. 3 and FIG. 4, a combination of the various pattern patterns surrounding the non-compressed portion 18 with the linear compression portion 7 a and a wavy pattern continuous in the longitudinal direction, Various patterns may be used, such as a mixture of leaf-like patterns and dot-like patterns.

  The pattern of the embossed compression part 7 is a pattern that exists in the vicinity of the side edges 6 and 6 in the width direction of the absorbent body 3 and is continuous in the longitudinal direction or a discontinuous pattern arranged in the longitudinal direction. Thus, when viewed in a direction perpendicular to the line of the side edges 6 and 6 of the absorbent body 3, the entire area or most of the region on the side edges 6 and 6 and in the vicinity of the outside thereof in any range. The crab embossed compression part 7 is present.

  By the heat embossing treatment, the nonwoven fabric is consolidated or filmed at the embossed compression portion 7, that is, the linear compression portion or the dot compression portion, and the body fluid barrier that has diffused the surface material layer 1 in the lateral direction As a result, side leakage and exudation are prevented, and the body fluid flows toward the absorber 3 below and is absorbed by the absorber 3. In order to ensure the prevention of lateral leakage (exudation), even if the surface material layer 1 is formed of a plurality of non-woven fabrics or is thick, the hot embossing treatment is performed by the embossed compression portion 7. It is preferable that the surface material layer 1 as a whole is in a film-forming condition.

  Because of such hot embossing, for example, even if the embossed compression portion 7 has a discontinuous embossing pattern in the longitudinal direction, most body fluids are embossed at the portions in the vicinity of the side edges 6 and 6 of the absorber 3. It encounters the compression section 7 and stops moving in the lateral direction and flows toward the absorber. Further, since the amount of excretory fluid targeted by the panty liner or the like is not large, there is a little gap between the embossed compression portions 7 arranged in the longitudinal direction and the embossed compression portions 7 adjacent thereto without the embossed compression portion. Even if there is, side leakage and exudation can be almost prevented.

  Since the embossing compression part 7 exists in either the area | region which hits the absorber side edge part of the surface material layer 1, and its outer vicinity, it does not prevent the transition from the surface material layer 1 of the excretory body fluid to the absorber 3 The almost entire surface of the absorber 3 is effectively used for absorbing body fluid.

  Moreover, since the embossing compression part 7 is a hot embossing process only to the surface material layer 1, the embossing is thick embossing, the circular shape or the whole leaf shape is heat embossing compaction, or an area of heat embossing compaction. Can be used because it has little influence on the rigidity of the entire absorbent article, but it must be in a range that does not impair the soft texture of the surface material layer 1.

  Further, the embossed compression portion 7 which is a linear compression portion has a line thickness of 1. It is preferably formed so as to be a thin line of Omm or less, preferably 0.5 mm or less. In such a case, even if a large number of embossed compression parts 7 are present, the surface material layer 1 is soft. The texture is not impaired and there is almost no influence on the rigidity of the entire absorbent article. That is, it is preferable that the embossed compression portion 7 is mainly a linear compression portion formed in a thin line shape.

  Furthermore, since the heat embossing of the surface material layer 1 can be applied to the surface material layer 1 so that the embossed compression portion 7 of various designs can be seen externally, as a result of generating the appearance aesthetics of the absorbent article, A feeling of comfort can be given to the user.

  The embossed compression part 7 adopts a uniform and regular embossing pattern from the viewpoint of uniformity of the texture of the surface material layer 1, influence on the rigidity of the entire absorbent article and appearance aesthetics, etc. It is preferable to do.

(Absorber)
The material of the absorber 3 is not particularly limited as long as it is a water-absorbing material. For example, fluff pulp laminated to a predetermined size, super water-absorbent resin added to it, hydrophilic urethane foam pulp containing high water-absorbing resin, foaming absorbent material such as cellulose sponge, etc. Is mentioned. Among these, the absorbent material used in this absorbent article is preferably a laminated structure of two or more layers of airlaid pulp, and a layer having a higher density as it goes to the back side.

  The dimensions (length and width) of the absorbent body 3 of the present invention are preferably set to a size approximately equal to the female local area. The length in the longitudinal direction is 70 to 120 mm, and the width W1 is 20 to 40 mm. Assuming that the absorbent body 3 has dimensions that extend outside the region in contact with the local area, for example, when the absorbent body 3 is disposed in the entire length in the product longitudinal direction, the three-dimensional fit to the concave portion of the local area is impaired, so the absorbent article and the local area There may be gaps between them, which may cause fluid leakage. Moreover, it deform | transforms in a back part with much movement, and will feel a foreign material feeling.

  The surface material layer 1 and the back surface material layer 2 have the same dimensions, and the absorber 3 has a rectangular shape and is smaller than both the layers 1 and 2. The dimension in the longitudinal direction of the absorber 3 is shorter than the total length dimension in the longitudinal direction of the surface material layer 1 and the back surface material layer 2, and the width dimension W1 is the side edges of the surface material layer 1 and the back surface material layer 2, that is, It is further shorter than the narrowest width dimension of the side edges 8, 8 of the absorbent article. The midpoint of the distance between the side edge 6 and the side edge 6 of the absorbent body 3 coincides with the midpoint of the distance between the side edge 6 and the side edge 6 of the absorbent article. Therefore, the both side edge parts 6 and 6 of the absorber 3 are located inside the both side edge parts 8 and 8 of the absorbent article, and the distance between the side edge part 6 and the side edge part 8 is 5 mm or more and 15 mm. It is as follows.

  In this absorbent article, the region where the absorbent body 3 is provided is the central region, and the region sandwiched between the side edge 6 of the absorbent body 3 and the side edge 6 of the absorbent article is the side region. is there.

Specifically, the absorber 3 is manufactured as follows, for example.
Airlaid pulp with a basis weight of 160 g / m ² , a thickness of 1.6 mm, a length of 100 mm in the longitudinal direction, and a width of W1 of 30 mm is used. . One absorber is used to obtain the absorber 3. Here, airlaid pulp is also referred to as an airlaid nonwoven fabric, and the constitution thereof is pulp: 87% by mass, a core-sheath type composite synthetic fiber having a core part of PP and a sheath part of PE (fineness is 1.7 dtex). , Fiber length 13 mm): 13% by mass. The composite synthetic fiber in which the sheath part is formed of PE having a low melting point has an effect of acting as a binder by heat treatment. Alternatively, an adhesive that binds pulp and the composite synthetic fiber may be used.

(Back material layer)
The material used for the back surface material layer 2 is not particularly limited as long as it is liquid-impermeable. A breathable plastic film, a non-breathable plastic film, or an SMS nonwoven fabric in which a spunbond nonwoven fabric / meltblown nonwoven fabric / spunbond nonwoven fabric are laminated and bonded to each other may be used.

(Adhesive for assembly)
When assembling an absorbent article by bonding the surface material layer 1, the absorber 3 and the back surface material layer 2 to each other, or when the surface material layer 1 and the absorber 3 are composed of a plurality of parts At this time, an assembly adhesive such as a polyolefin-based hot melt adhesive is used. It is preferable to reduce the coating amount as much as possible by selecting the type of adhesive, the coating area, and the coating pattern so as to minimize the effect of giving rigidity to the absorbent article while serving as an assembly adhesive.

(Slipping prevention adhesive)
On the outer surface of the back surface material layer 2, an absorbent article is attached to the crotch portion of the shorts, and an adhesive 5 for preventing the slippage to stop the slippage during wearing is applied to the entire surface or partially like a belt. As the adhesive 5 for preventing slippage, a rubber adhesive containing hydrogenated styrene / butadiene rubber, hydrogenated petroleum resin, paraffin oil, or the like is preferably used. The top of the anti-slipping adhesive 5 is covered with a release paper treated with a release agent.

(Overall shape and structure of absorbent articles)
The absorbent article of this embodiment is a shallow hourglass-like shape, both end edges facing the wearer's abdomen and buttocks facing the longitudinal direction are convex curved shapes, and both side edges extending in the longitudinal direction 8 and 8 are shallow concave curved shapes. The length of the absorbent article in the longitudinal direction is, for example, about 140 mm at the longest part, the width dimension is about 45 mm at the extreme end at the center in the longitudinal direction, and about 60 mm at the widest side on the edge in the longitudinal direction. It is preferably used.

  It is preferable that the thickness (central part) of the absorbent article of the present invention is 2.0 to 20 mm. 2． In the case of Omm or less, the three-dimensional fit to the local concave portion is reduced and a gap is formed between the skin and the body fluid leakage preventing effect is reduced. When it is 20 mm or more, the fit is improved and the leakage of body fluid is reduced, but the feeling of use is extremely easy to feel when body pressure is applied. The preferred range is 2.5-5. If it is within this range, an appropriate fit can be obtained and a sense of security against leakage due to thickness can be obtained.

  Further, in the central region where the absorbent body 3 of the absorbent article is present, a large number of small permeation holes 9 extending from the surface material layer 1 to the absorbent body 3 are opened, and the body fluid given to the outer surface of the surface material layer 1 is formed. Transmission to the absorber 3 is promoted.

  The transmission hole 9 inserts a pin-shaped protrusion from the surface material layer 1 to the absorber 3 to partially damage the surface material layer 1 and the absorber 3, or the surface material layer 1 and the absorber 3 It is formed by partial compression. As shown in FIG. 1B, in the cross-sectional shape of the transmission hole 9, the surface material layer 1 is present on the side wall 9a inside the hole, and the surface material layer 1 is not present on the bottom 9b. Or the surface material layer 1 may exist in the bottom part 9b.

  As shown in FIGS. 2A and 2B, the transmission holes 9 are regularly dispersed in almost the entire central region. However, the permeation holes 9 are dispersed in a region sandwiched between the embossing compression part 7 and the embossing compression part 7 on both sides, and all the permeation holes 9 are separated from the embossing compression part 7, and any of the permeation holes 9 is also embossed. It is formed so as not to overlap with the compression unit 7.

  In the examples shown in FIGS. 3 and 4, the transmission holes 9 are not particularly illustrated. However, in any of the examples, the transmission holes 9 are regularly arranged in the central region and in a range not overlapping with the embossed compression portion 7. It is distributed and arranged.

  When the transmission hole 9 is provided in the central region, the body fluid applied to the outer surface of the surface material layer 1 in the central region flows into the transmission hole 9 and is easily absorbed by the absorber 3. In any of the examples shown in FIGS. 2, 3, and 4, the embossed compression portion 7 has a range in which the embossed compression portion 7 extends from the upper side of the absorbent body 3 to the side region across the side edge 6, that is, the width dimension W2. The transmission holes 9 are dispersed in a region sandwiched between the embossed compression portion 7 and the embossed compression portion 7 in the central region. Therefore, the body fluid that flows or spreads laterally through the surface material layer 1 is stopped by the embossed compression portions 7 and 7 on both sides of the central region, and between the embossed compression portion 7 and the embossed compression portion 7. And is quickly absorbed by the absorber 3 below.

  As described above, the liquid blocking function of the embossed compression portions 7 and 7 located on both sides of the central region where the absorbent body 3 is provided and the liquid function of the permeation hole 9 in the central region are combined, and the absorbent article. The body fluid can be prevented from seeping out and leaking in the lateral direction, and the absorbability of the body fluid is further enhanced.

  In the illustrated embodiment, the embossed compression portion 7 has a leaf-like pattern or the like, and the region where the embossed compression portion 7 is provided is a side crossing the side edge portion 6 from above both side portions of the absorbent body 3. The width dimension over the partial area is in the range of W2. Therefore, the surface material layer 1 is the same as the liquid blocking zone formed over the entire length in the longitudinal direction in the range where the width dimension including the side edge 6 is W2. By this liquid blocking zone, it is possible to stop the body fluid that is about to flow out or ooze out from the central region. Moreover, since the linear compression portion and the dot compression portion are provided in the liquid blocking zone and the area occupied by the embossed compression portion 7 in the liquid blocking zone is small, the absorbent article as described above is used. Does not cause a sense of tingling

  The width W2 of the liquid blocking zone is preferably 3 mm or more and 10 mm or less. If the area is less than 3 mm, the area ratio occupied by the embossed compression portion 7 in the liquid blocking zone is high, which tends to cause a feeling of tingling, and if it exceeds 10 mm, the area that exhibits a substantial liquid absorption function in the central area Will be narrowed.

  Further, the width dimension W3 of the region sandwiched between the embossed compression parts 7 and the embossed compression parts 7 on both sides is preferably 0.6 times or more the width dimension W1 of the absorber 3. If it is this range, the area | region which the liquid of the surface material layer 1 permeate | transmits can fully be ensured.

(Method for manufacturing absorbent article)
The said absorbent article can be manufactured through processes, such as material supply and an absorbent article assembly which are normally employ | adopted in this field | area.

For example, the following manufacturing process can be illustrated. One or a plurality of non-woven fabrics are subjected to bulk recovery treatment (bonded in the latter case), and then subjected to the hot embossing of the present invention at a predetermined position to obtain a sheet of the surface material layer 1. The absorber 3 made in a separate process and cut to a predetermined size is bonded to the surface material layer 1. If transmission hole 9 from the top of the surface material layer 1 into the absorbent body 3 parts Ru subjected is performed after the bonding step. Next, the adhesive 5 for slip prevention and the back surface material layer 2 to which the release paper is attached are bonded together. Thereafter, it passes through a press roll, a cutter, and the like to become an absorbent article as a final product.

(A) is typical sectional drawing which cut the longitudinal direction center part of the absorbent article of one Embodiment of this invention in the width direction, (B) is the partially expanded view. (A) is a top view of the absorbent article which performed the heat embossing (leaf-like embossing pattern) of this invention, (B) is the partially expanded view. The top view of the absorbent article which gave the other heat embossing (pattern which combined the leaf-like embossing and curve embossing). The top view of the absorptive article which gave other heat embossing (pattern which combined leaf-like embossing and small circle embossing).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Surface material layer 2 Back surface material layer 3 Absorber 4 Peripheral part joining means 5 Anti-slipping adhesive 6 Side edge part 7 Absorber compression part 7a Linear compression part 8 Side edge part 18 of an absorbent article Uncompressed part

Claims (9)

A liquid permeable surface material layer, a liquid impermeable back material layer, the absorbent article having a arranged absorber between the two material layers,
The surface material layer is formed of a nonwoven fabric whose bulk has been recovered by hot air treatment,
The absorbent body has a narrower width dimension than the surface material layer and the back surface material layer, and a side edge portion extending in a longitudinal direction of the absorber is positioned inside a side edge portion of the surface material layer and the back surface material layer. And
When the region where the absorber is provided is a central region, and the side region between the side edge of the absorber and the side edge of the surface material layer and the back surface material layer,
Embossed compression parts that compress only the surface material layer are formed on both sides of the central region, and are formed continuously in the longitudinal direction or arranged in the longitudinal direction . An absorbent article having a width dimension extending from the central region to the side region, straddling each side edge of the absorbent body . The embossed compressed portions, the absorbent article according to claim 1, wherein comprising a linear compression unit for continuous. The embossed compression section has one or more pattern patterns in which the linear compression section continuously surrounds the periphery of the non-compression section, and the pattern patterns are arranged in the longitudinal direction. The absorbent article according to claim 2 . The absorbent article according to claim 3 , wherein the pattern pattern is a leaf-shaped pattern. The absorbent article according to any one of the embossed compressed portions claims 1 and form a film are hot embossing process 4. Wherein the central region, the absorbent article according to any one of the surface material claims 1 number of transmission holes are formed which are apertured over the absorber from layer 5. The transmission hole is dispersed in a region between the embossed compressed portions located on both sides, the absorbent in all of the transmission hole is claim 6 provided at a position apart from the embossed compressed portions Goods. The absorbent article according to claim 6 or 7, wherein the transmission hole is formed by partially damaging or compressing the surface material layer and the absorber. A step of forming a surface material layer in which an embossed compression portion is formed that recovers the bulk of a liquid-permeable nonwoven fabric with hot air and is continuous in the longitudinal direction or arranged in the longitudinal direction;
A step of disposing an absorber having a narrower width dimension than the surface material layer and the back surface material layer between the surface material layer and the liquid-impermeable back surface material layer;
A side edge portion extending in the longitudinal direction of the absorbent body is positioned inside a side edge portion of the surface material layer and the back surface material layer, and the embossed compression portion straddles the side edge portion of the absorbent body. An absorbent article formed with a width dimension extending from a central region where a body is provided to a side region between a side edge of the absorbent body and a side edge of the surface material layer and the back surface material layer is manufactured. The manufacturing method of the absorbent article characterized by the above-mentioned.

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