KR20190001738U - Absorbent article - Google Patents

Abstract

An object of the present invention is to provide an absorbent article which is excellent in fit property and can suppress leakage of excreted liquid from at least a longitudinal end portion of a front region.
The absorbent article of the present invention has a pressed portion 5 for integrating at least the topsheet 2 and the absorbent body 4 in the front region A _F , And two compression grooves (52, 53) extending outward from the base point (51) in the longitudinal direction and toward both outer sides in the width direction, wherein the base (51) The starting point 51 does not overlap the central axis C _L extending in the longitudinal direction of the absorbent article and the distance L _S from the central axis C _L is less than the widthwise length of the absorbent article 4 L _W , and the two compression grooves 52, 53 are arranged such that one compression groove 52 crosses the central axis C _L.

Description

[0001] ABSORBENT ARTICLE [0002]

The present invention relates to absorbent articles such as sanitary napkins, panty liners, and the like.

Absorbent article such as a sanitary napkin, panty liner, or the like is worn over a long period of time in contact with the crotch of the wearer. Therefore, the absorbent article is liable to be deformed following the body shape of the wearer Absorbent article which is excellent in water resistance and water resistance.

As such an absorbent article, for example, Patent Document 1 discloses that a topsheet, an absorbent core and a backsheet are laminated in this order, the topsheet and the backsheet are bonded to each other in both sides of the absorbent core, The absorbent core according to any one of claims 1 to 3, wherein the absorbent core is provided with a first embossed portion on both sides of the core, And a second embossing is formed from the base sheet to draw a straight line extending outwardly in the front-back direction from the topsheet toward both side-rooms.

In the sanitary napkin disclosed in Patent Document 1, when the pressure in the widthwise direction inward is applied to the front-back direction center portion of the sanitary napkin, the upper layer portion of the topsheet or the absorbent article core approaches the widthwise center line side from the second embossed side, The portion sandwiched by the second embossed portions including the center in the widthwise direction of the front and back direction end portions in the width direction is projected to the side of the wearer (i.e., the folded state as viewed from the surface sheet side) have.

Patent Document 1: JP-A-2009-082480

However, in the sanitary napkin disclosed in Patent Document 1, when the sanitary napkin is worn, the crotch portion of the wearer faces the central region (the region including the central portion in the front-back direction and the center portion in the width direction) of the sanitary napkin, The excreted liquid tends to diffuse toward the outward side in the longitudinal direction along the central axis in the longitudinal direction located at the center in the width direction of the sanitary napkin, When the excreted liquid reaches the base end of the second embossment, it spreads further along the second embossment toward the outer side in the longitudinal direction, so that the excretion liquid may leak from the longitudinal end portion. Since the length of the front region in the napkin is generally the same as or less than the length in the longitudinal direction of the rear region, leakage of such discharged liquid occurs at least at the longitudinal end of the front region It tends to be easy.

Therefore, it is an object of the present invention to provide an absorbent article which is excellent in pitting property and can suppress leakage of excreted liquid from at least a longitudinal direction end portion of a front region.

One aspect (mode 1) of the present invention is an absorbent article having a longitudinal direction and a lateral direction, the longitudinal direction including a topsheet, a backsheet, and an absorbent body disposed between the sheets,

Wherein the absorbent article has a central region opposed to the crotch portion of the wearer when worn and a front region adjacent to the front side of the wearer in a plan view and having at least a compression bonding portion for integrating at least the topsheet and the absorbent body And,

The crimping portion has two fulcrum portions extending from the fulcrum located on the innermost side in the longitudinal direction and on the outer side in the longitudinal direction from the fulcrums and toward both outer sides in the width direction,

The starting point is located at a position which is not overlapped with a central axis extending in the longitudinal direction of the absorbent article and the distance from the central axis is within 15% of the width direction of the absorbent article,

And the two compression grooves are disposed such that one compression groove intersects the central axis.

In the absorbent article of this aspect, the pressing portion in the front region is extended from the base point located on the innermost side in the longitudinal direction and the outward side in the longitudinal direction from the base point and toward both outer sides in the width direction And the distance from the central axis extending in the longitudinal direction of the absorbent article is within 15% of the width in the width direction of the absorbent article, and one of the two compression grooves Since the grooves are arranged so as to intersect with the central axis, the two compression grooves (in particular, the compression grooves intersecting the central axis extending in the longitudinal direction) are used as folding starting points, And the central portion in the width direction of the central region protrudes toward the skin surface side of the wearer and the outer side in the longitudinal direction The predetermined portion in the position of the front region easily deformed so as to stand toward the wearer's skin side, and the absorbent article can be adhered to accurately along the wearer's body shape (i.e., can exhibit excellent property feet).

Further, the absorbent article of the present embodiment is arranged such that the origin of the above-mentioned pressing portion does not overlap with the central axis extending in the longitudinal direction of the absorbent article, and the one pressing groove intersects the central axis extending in the longitudinal direction Therefore, even if the excreted liquid discharged from the wearer diffuses to the outer side in the longitudinal direction along the central axis in the longitudinal direction and reaches the pressed portion, even if the excreted liquid starts from the intersection point of the longitudinal center axis and one of the compression grooves (That is, in the direction along the one compression groove, the direction toward the base point of the compression bonding portion and the direction away from the base point of the compression bonding portion, with the intersection point as a boundary) in accordance with the one compression groove, (That is, the leakage of the excreted liquid from the longitudinal end of the absorbent article) Can be suppressed).

From the above, the absorbent article of the present embodiment is excellent in pitting property and can suppress leakage of the excreted liquid from at least the longitudinal direction end portion of the front region.

In another aspect (mode 2) of the present invention, in the absorbent article of embodiment 1, the compression grooves have a plurality of high-pressure bonding parts having a relatively high density.

In the absorbent article of this embodiment, since the compression grooves have a plurality of high-pressure bonding portions having a relatively high density (i.e., a deep groove depth), the high-pressure bonding portion easily functions as a folding point, The predetermined portion of the front region located on the outer side can be more easily deformed so as to stand up toward the wearer's skin surface side, and the high-pressed portion having relatively high density can absorb the excreted liquid in the compressed groove by spot- (That is, it is possible to make the excreted liquid more difficult to reach the longitudinal end portion of the absorbent article). Thereby, the absorbent article of this embodiment can more reliably obtain excellent fitability and can make leakage from the longitudinal end portion more difficult.

In another aspect (mode 3) of the present invention, in the absorbent article of aspect 1 or 2, the angle formed by the one pressing groove and the central axis is at least 30 degrees and less than 90 degrees.

The absorbent article of this embodiment has an angle formed by the compression grooves on one side and the central axis in the longitudinal direction of 30 to 90 degrees so that the excreted liquid discharged from the wearer spreads toward the outer side in the longitudinal direction along the longitudinal central axis The momentum of the flow toward the outward side in the longitudinal direction of the excreted liquid is weakened at the intersection of the one squeeze groove and the central axis and is dispersed in the opposite direction with the intersection as a boundary The flow rate of the dispersed flow of the excreted liquid can be reduced. Thereby, the absorbent article of the present embodiment can make leakage of the excreted liquid from the longitudinal direction end more difficult to occur.

In another aspect (mode 4) of the present invention, in the absorbent article according to any one of the above-mentioned aspects 1 to 3, the two compression grooves are arranged on the outer side in the longitudinal direction so as to face toward the inner side in the width direction And are connected to each other to have an annular outer shape as a whole.

In the absorbent article of this embodiment, since the two compression grooves have an annular outer shape as a whole, and there is no end portion of the compression groove on the outer side in the longitudinal direction, the excreted liquid discharged from the wearer It is possible to guide the excreted liquid to the other compression groove which is connected to the outer side in the longitudinal direction so as to make it difficult to reach the longitudinal direction end portion of the absorbent article (that is, The leakage of the excreted liquid from the longitudinal end portion of the absorbent article can be made less likely to occur).

In still another aspect (mode 5) of the present invention, in the absorbent article of aspect 4, the annular outer shape is a heart-shaped outer shape.

In the absorbent article of this embodiment, since the outer shape of the pressed portion formed by the two pressing grooves is a heart-shaped outer shape, even if the discharged liquid discharged from the wearer flows to the outer side in the longitudinal direction along one pressing groove, The excreted liquid can be guided to return to the inward side in the longitudinal direction while facing the inside in the width direction on the outer side in the longitudinal direction, making it difficult to further reach the longitudinal direction end of the absorbent article (that is, Leakage of the excreted liquid from the direction end can be made more difficult).

According to the present invention, it is possible to provide an absorbent article which is excellent in fit property and can suppress leakage of excreted liquid from at least the longitudinal direction end portion of the front region.

Fig. 1 is a plan view of a sanitary napkin 1 according to an embodiment of the present invention, as viewed from its surface sheet side in a developed state, in its thickness direction. Fig.
Fig. 2 is an enlarged cross-sectional view of a cross section taken along line II-II of the sanitary napkin 1 of Fig. 1;
3 is an enlarged plan view of a main portion surrounded by a frame line III of the sanitary napkin 1 in Fig.
4 is a schematic view showing a part of a state in which the sanitary napkin 1 is deformed into a pear shape upon wearing.

Best Mode for Carrying Out the Invention Hereinafter, preferred embodiments of the absorbent article of the present invention will be described in detail with reference to the drawings. In the present specification, unless otherwise specified, the term " to view an object placed on a horizontal plane (e.g., a sanitary napkin (absorbent article) or the like) in the expanded state in the thickness direction of the object from the upper side in the vertical direction " It is simply called "seeing from the plane". In particular, when the object is an absorbent article, it is simply referred to as " looking in the plane " to " view the absorbent article in the thickness direction from the skin surface side (i.e., the surface sheet side) of the wearer ".

The various directions and the like used in the present specification are as follows unless otherwise specified.

In this specification, " longitudinal direction " refers to " a direction in which a longitudinally long object (e.g., an absorbent article or the like) is long in a plane view, (Short direction) ", and the " thickness direction " indicates the " vertical direction with respect to the object placed on the horizontal plane in an expanded state ", and these longitudinal direction, width direction and thickness direction are orthogonal to each other .

In the present specification, the term " a longitudinal central axis " or " a longitudinal central axial line extending in the longitudinal direction " An axis extending in the longitudinal direction of the long object and extending in the width direction is referred to as a " central axis extending in the width direction " or a " central axis extending in the width direction ". In this connection, " the side in the longitudinal direction relative to the central axis in the width direction " is referred to as " the side in the longitudinal direction " in the longitudinal direction of the longitudinally long object, Relative to the central axis of the direction " is referred to as " outer side in the longitudinal direction ". Likewise, " the proximal side relative to the central axis in the longitudinal direction " is referred to as " the widthwise inner side " in the longitudinal direction of the longitudinally long object, The far side relative to the center axis " is referred to as the " outer side in the width direction ".

In this specification, " one side which becomes relatively proximal to the wearer's abdomen when the absorbent article is worn in the longitudinal direction of the absorbent article " is referred to as " the front side of the absorbent article &Quot; the other side which is relatively remote with respect to the abdomen of the wearer when worn by the absorbent article in the longitudinal direction of the wearer ' (i.e., the proximal side relative to the back portion of the wearer) .

In the present specification, unless otherwise stated, in the thickness direction of the absorbent article, " the proximal side relative to the skin surface of the wearer when wearing the absorbent article " is referred to as " Is referred to as the " non-skin surface side " when the wearer wears the wearer's skin. Herein, " when worn " means from when the wearer wears the absorbent article (i.e., when the wearable article is formed) to while the wearer is wearing the article.

Fig. 1 is a plan view of the sanitary napkin 1 according to one embodiment of the present invention as viewed in the thickness direction on the side of the surface sheet in the unfolded state, Fig. 2 is a plan view of the sanitary napkin 1 taken along line II- Fig. 3 is an enlarged plan view of a main portion surrounded by a frame line III of the sanitary napkin 1 in Fig. 1. Fig. 4 is a schematic view showing a part of a state in which the sanitary napkin 1 is deformed into a pear shape upon wearing.

1, a sanitary napkin 1 (an example of an " absorbent article " in the present invention) according to an embodiment of the present invention has a longitudinal direction L and a lateral direction W, More specifically, both end portions in the longitudinal direction L (that is, the longitudinal direction end portion E _L1 on the front side and the longitudinal direction end portion E _L2 on the rear side), and more specifically, Of the sanitary napkin 1 has a shape protruding to draw an arc toward the outer side of the longitudinal direction L and has an outer edge of the central portion in the longitudinal direction L (E _{W1 in} the width direction on one side in the width direction and the width direction E _W2 on the other side in the width direction W) of the protrusions are protruded so as to form a substantially trapezoidal shape toward the outer side in the width direction (W). In the present invention, the outer shape of the absorbent article is not limited to such an aspect, and may be any arbitrary shape according to various applications, for example, as long as the length in the longitudinal direction L is longer than the length in the width direction W. (For example, rectangular, oval, hourglass, etc.) may be employed.

1 and 2, the sanitary napkin 1 according to the present embodiment has a liquid-permeable top sheet ₁ which forms the surface F ₁ of the skin surface side of the sanitary napkin 1 in the thickness direction T, 2 and, as a sanitary napkin (1) a non-skin side of the surface (F _2), backsheet (3) of liquid-impervious forming a of, the absorbent body 4 of the absorbent is located between these two sheets, the main constituent it is provided with a member, Further, the backsheet 3 in the surface (F ₂₎ of the non-skin side disposed to overlap with the absorbent body 4 in the thickness direction (T), the sanitary napkin 1, such as the wearer's underwear And a release sheet (not shown) for protecting the adherend for use before the use, which is disposed on the non-skin surface side of the adherend for fixing the adherend, As a constituent member.

1, the sanitary napkin 1 is provided at both ends in the width direction W of the top- and backsheets 2, 3 in the central portion in the longitudinal direction L (E _W1 on one side in the width direction _W and the width direction end _{W W2} on the other side in the width direction W) protrude outward in the width direction W to form a substantially trapezoidal shape, 9 on the side of the non-skin surface side of the pair of flap portions 9, 9 are provided with flaps 9, 9 for fixing the pair of flap portions 9, 9 to the wearer's wear, (Not shown) for securing the sheet.

A sanitary napkin 1 having such a configuration will be the time used to separate the above-mentioned release sheet, the sanitary napkin (1) Specific surface (F ₂₎ of the skin surface side, the garment fixed wearer of the garment via the adhesive parts for the wear (e.g., A pair of flap portions 9 and 9 are each folded back to the outer surface of the garment, and are affixed to the outer surface of the garment through the tacky portion for fixing the flap portion, thereby being fixed to the garment of the wearer. When the excreted liquid such as menstrual discharge is discharged from the wearer, the excreted liquid is supplied to the surface F ₁ of the skin surface side of the topsheet 2 in the central region A _C described later of the sanitary napkin 1 , The surface sheet 2 is shifted toward the non-skin surface side in the thickness direction T while diffusing the surface sheet 2 at least in the longitudinal direction L and thereafter the absorbent body 4 Absorbed and retained.

In addition, it is not necessary for the absorbent article of the present invention to have the pair of flaps 9, 9 described above because it is not an indispensable constituent element of the absorbent article of the present invention.

1, the sanitary napkin 1 according to the present embodiment has a longitudinal direction end portion E _L1 located on the front side of the sanitary napkin 1 in a plan view, longitudinal end (E _L2), and a widthwise end portion which is located on one side of the sanitary napkin 1 in the width direction (W) of (E _W1) and, located at the other side of the sanitary napkin 1 in the width direction (W) of the width and have ends (E _W2) which, also, between the front longitudinal end (E _L1) and a longitudinal end portion (E _L2) of the rear side (that is opposite to the wearer's crotch during wear , the rear of which extends to a position that faces the wearer's baeseolgu) a central area (a _C) and, with its center area (front area (a _F) that is adjacent to the front side of the a _C), the central area (a _C) And a rear region A _B adjacent to the rear region A _B.

Here, in the present specification, the " central region " refers to a region of the wearer's crotch, more specifically, a region extended to include a position facing the excretion of the wearer when the absorbent article is worn, Is an area set for each type of absorbent article in accordance with the use (specifically, the type of the excreted liquid such as menstrual blood and urine, the age and sex of the wearer who is the target). Such a central region is generally located at a position substantially in the longitudinal direction of the absorbent article or at a position near the front side (for example, when the absorbent article has a flap portion, a front side overlapping with the flap portion in the width direction And the absorbent article has a constricted portion at the inner side in the width direction at a substantially central portion in the longitudinal direction is a position at a substantially central portion overlapping with the constricted portion in the width direction as viewed from a plane, Is an approximate center position across the central axis in the width direction of the absorbent article, the length of the absorbent article is set to be about 1/4 or more of the longitudinal length of the absorbent article, For example, when the absorbent article is a night napkin or the like, in order to sufficiently secure the longitudinal length of the rear region, In some cases the length direction length, which is set to be less than 1/4 of the entire longitudinal length of the absorbent article.

1 to 3, the sanitary napkin 1 of the present embodiment has a pressing portion 5 for integrating the topsheet 2 and the absorbent body 4 in the aforementioned front region A _F Have. 1 and 3, the pressing portion 5 includes a starting point 51 located on the innermost side in the longitudinal direction L and a starting point 51 extending from the starting point 51 in the longitudinal direction L And the fulcrum 51 extends in the longitudinal direction L of the sanitary napkin 1. The fulcrum 51 has two pressing grooves 52 and 53 extending outwardly in the width direction W and extending toward both outer sides of the width direction W the central axis (C _L) and does not overlap also the width of the center axis (CL), the distance (L _S), the absorbent less than 15% of the width direction length (L _W) of 4, that is, the absorber 4 from the And the two compression grooves 52 and 53 are arranged at positions that are within 15% with respect to the width direction length L _W when the direction length L _W is set to 100% And the grooves 52 are arranged so as to intersect the central axis C _L of the longitudinal direction L.

The sanitary napkin 1 of the present embodiment has the same structure as the pressed portion 5 of the front region A _F (that is, the structure having the specific starting point and the two compression grooves) in the rear region A _B , And a pressing portion 6 having a pressing portion 6a.

As described above, the sanitary napkin 1 of the present embodiment is characterized in that the pressed portion 5 of the front region A _F has the starting point 51 located on the innermost side in the longitudinal direction L, And the fulcrum 51 has two pressing grooves 52 and 53 extending outwardly in the longitudinal direction L from the sanitary napkin 1 and extending toward both outer sides of the width direction W, Is disposed at a position where the distance L _S from the central axis C _L extending in the longitudinal direction L is within 15% of the width direction L _W of the absorber 4, Since one of the compression grooves 52 and 53 is disposed so as to intersect the central axis C _L , the two compression grooves 52 and 53 (in particular, by a compressed groove (52) intersecting the central axis (C _L) by folding starting point, two compressed grooves 52, 53 forward to than the length located on the inward side of the direction (L) area (a _F) and the center width in the room area (A _C) Predetermined portion in a the central portion, and projects toward the wearer's skin side, two compressed grooves (52, 53) forward to than the length position in the outward side of the direction (L) area (A _F) As shown in Fig. 4 The sanitary napkin 1 can be closely adhered to the wearer's body shape (that is, excellent fitability can be exhibited).

The feminine napkin 1 of the present embodiment is characterized in that the starting point 51 of the pressed portion 5 does not overlap with the central axis C _L extending in the longitudinal direction L of the sanitary napkin 1, The excretion liquid such as menstrual blood is discharged from the center axis C in the longitudinal direction L of the sanitary napkin 1 because the compression grooves 52 of the sanitary napkin 1 cross the central axis C _L extending in the longitudinal direction L, _The liquid exudes from the central axis C _{L in the} longitudinal direction L and the central axis C _{L in the} longitudinal direction L to the outside of the one compression groove 52, The pressing portion 52c is moved from the intersection 52c to the pressing portion 52c in the direction opposite to the one pressing groove 52 in the direction along the one pressing groove 52, are dispersed in 5) a direction away from the origin 51 of the base point 51, the direction toward the pressing portion 5 of], in the air to reach the longitudinal ends (E _L1) of the front side of the sanitary napkin 1 It has to be [that is, the leakage of liquid waste from the front longitudinal end (E _L1) of the sanitary napkin 1 can be suppressed.

As described above, the sanitary napkin 1 of the present embodiment is excellent in fitability and can suppress leakage of the excreted liquid from at least the longitudinal end portion E _L1 of the front region A _F.

In addition, the sanitary napkin 1 of this embodiment is the rear area (A _B) also, the bonding part (5) with the same, a bonding part (6 having the specific starting point and two crimp groove of the front area (A _F), the ), said rear area (a _B) even by the above-described bonding part (5) can be obtained, the same operation and effect as function and effect, the lengthwise end (E _L2) of the rear area (a _B) on because it has the It is possible to suppress the leakage of the excreted liquid from the liquid.

In the case where there is less risk of leakage of the excreted liquid discharged from the wearer from the longitudinal direction end portion of the rear region (for example, The length in the longitudinal direction of the region is ensured to be sufficiently long), the absorbent article may not have such a crimped portion in the rear region.

Hereinafter, various members constituting the absorbent article of the present invention will be described in further detail using the sanitary napkin 1 according to the above-described embodiment.

[Surface sheet]

1 and 2, the topsheet 2 of the above-described embodiment is formed so as to extend from the longitudinal end E _L1 of the front side of the sanitary napkin 1 to the rear side Of the sanitary napkin 1 extends in the longitudinal direction L across the longitudinal end portion E _L2 of the sanitary napkin 1 and extends from the widthwise end portion E _W1 on one side in the width direction W of the sanitary napkin 1 to the widthwise end portion E _W2 of the sanitary napkin 1 extending in the width direction W. The sanitary napkin 1 shown in Fig. 2, the topsheet 2 is disposed on the skin surface side in the thickness direction T of the sanitary napkin 1 and has a contact surface (that is, the sanitary napkin 1) that can come into contact with the wearer's skin surface, And a liquid-permeable sheet-like member which forms the skin surface side surface (F ₁ ) of the skin surface side.

In the present invention, the liquid-permeable sheet-like member usable as the top sheet is not particularly limited as long as it has various properties (for example, liquid permeability, touch, flexibility, strength, etc.) usable as the top sheet of the absorbent article, For example, any liquid-permeable sheet-like member such as nonwoven fabric such as air-through nonwoven fabric, spun lace nonwoven fabric, spunbond nonwoven fabric, point bond nonwoven fabric, or porous resin film can be used. Further, the structure of the sheet-like member usable as the topsheet is not particularly limited and, for example, a sheet-like structure having a hole, a sheet-like structure having a hole, a concave- convex structure (concavo-convex structure having a cross- ), Or the like can be adopted. When a nonwoven fabric is used as the topsheet, the type of the constituent fibers is not particularly limited and includes, for example, cellulose fibers; Hydrophilic fibers such as thermoplastic resin fibers such as olefin resin and polyester resin subjected to hydrophilization treatment, and these fibers may be used alone or in combination of two or more kinds of fibers.

The outer shape, various dimensions, basis weight and the like of the topsheet are not particularly limited as long as they can be used as the topsheet of the absorbent article, and any outer shape, various dimensions, basis weight, etc. Can be adopted. For example, the thickness of the surface sheet may be within the range of 0.001 mm to 5.0 mm, preferably within the range of 0.01 mm to 3.0 mm, more preferably within the range of 0.1 mm to 1.0 mm, The basis weight of the sheet may be in the range of 5 g / m 2 to 100 g / m 2, preferably in the range of 6 g / m 2 to 50 g / m 2.

[Back sheet]

1 and 2, the backsheet 3 in the above-described embodiment is formed so as to extend from the longitudinal direction end portion E _L1 of the front side of the sanitary napkin 1 to the rear side Of the sanitary napkin 1 extends in the longitudinal direction L across the longitudinal end portion E _L2 of the sanitary napkin 1 and extends from the widthwise end portion E _W1 on one side in the width direction W of the sanitary napkin 1 to the widthwise end portion E _W2 of the sanitary napkin 1 extending in the width direction W. The sanitary napkin 1 shown in Fig. 2, the backsheet 3 is disposed at a position on the non-skin surface side in the thickness direction T of the sanitary napkin 1 and is disposed on the non-contact surface with respect to the wearer's skin surface Impermeable sheet-like member which forms a non-skin surface side (surface F ₂ ).

In the present invention, the liquid impermeable sheet-like member usable as the backsheet can function as the backsheet of the absorbent article (that is, it prevents permeation of excreted liquid such as menstrual discharge discharged from the wearer, (For example, polyolefin-based fibers such as polyethylene (PE), polypropylene (PP), and the like) and thermoplastic resin fibers of any hydrophobic type A polyester-based fiber such as polyethylene terephthalate (PET), various conjugated fibers such as a core sheath, etc.); A resin film with or without holes formed by a hydrophobic thermoplastic resin such as PE or PP; A laminate obtained by bonding a nonwoven fabric to the resin film; And a laminated nonwoven fabric such as an SMS nonwoven fabric may be used.

The outer shape of the backsheet, various dimensions, basis weight and the like are not particularly limited as long as they can be used as the backsheet of the absorbent article, and any outer shape, various dimensions, basis weight and the like depending on the desired leakage preventing performance, Can be adopted.

[Absorber]

1, the absorbent body 4 of the sanitary napkin 1 according to the above-described embodiment has a central axis C _{L in} the longitudinal direction L of the sanitary napkin 1, Extends in a wide range of the longitudinal direction L and the width direction W over each of the center axis C _W of the longitudinal direction L and both ends of the longitudinal direction L are respectively located on the outer side of the longitudinal direction L And has a vertically elongated outer shape protruding so as to draw a circular arc toward the center. 2, the absorber 4 is disposed between the top- and backsheets 2, 3 in the thickness direction T of the sanitary napkin 1, and is disposed between the topsheet 2 and the backsheet 3, And an absorbent member having predetermined absorbency and liquid retention capable of absorbing and retaining excreted liquid such as menstrual blood.

In the present invention, the absorbent member usable as the absorbent member is not particularly limited as long as it can absorb and retain at least excreted liquid such as menstrual blood, and any absorbent member known in the art can be employed. Examples of such absorbent members include those in which at least one absorbent core composed of an arbitrary absorbent material is covered with a core wrap sheet such as a tissue having hydrophilic properties. Examples of the absorbent material constituting the absorbent core include hydrophilic fibers and superabsorbent polymers, and more specifically, cellulose fibers such as pulverized pulp, cotton, rayon and acetate; A particulate material composed of a highly water-absorbing polymer such as a sodium acrylate copolymer; And mixtures obtained by arbitrarily combining these.

The outer shape, various dimensions, basis weight and the like of the absorbent body are not particularly limited as long as they can be used as the absorbent body of the absorbent article. The outer shape of the absorbent body can be any arbitrary outer shape (for example, rectangular, oval, Etc.), various dimensions, basis weight, and the like.

[Crimp portion]

1 to 3, the sanitary napkin 1 of the above-described embodiment has a structure in which the topsheet 2 and the absorbent body 4 are pressed together in the thickness direction T in the front region A _F , The crimping portion 5 has a starting point 51 located at the innermost side in at least the longitudinal direction L and an outer side of the longitudinal direction L from the starting point 51 And two pressing grooves 52 and 53 extending toward both outer sides of the width direction W. [

The sanitary napkin 1 of the present embodiment has the crimping portion 6 also in the rear region A _B as described above. Such a crimping portion 6 is provided in the front region A _F 5, the description thereof will be omitted.

1 and 3, the starting point 51 of the pressed portion 5 of the sanitary napkin 1 of the present embodiment is formed in such a manner that the center 51 extending in the longitudinal direction L of the sanitary napkin 1, axis (C _L) and does not overlap also the width of the center axis (C _L), the distance (L _S), the absorbent less than 15% of the width direction length (L _W) of 4, that is, the absorber 4 from the Is set to be within 15% with respect to the widthwise length (L _W ) when the direction length (L _W ) is set to 100%).

As shown in Figs. 1 and 3, the two compression grooves 52 and 53 of the compression bonding portion 5 are formed such that one compression groove 52 is extended from the base point 51 in the longitudinal direction L (That is, on the obliquely forward side (E _L1 ) between the longitudinal direction end portion E _L1 on the front side and the width direction end portion E _W1 on the one side of the width direction _W FIG extending left side; toward the inclined upper side) in the first, and arranged to cross the center axis (C _L), in addition, the compressed groove 53 in the other side the longitudinal direction from the starting point (51) (L (That is, on the oblique front side between the longitudinal direction end portion E _L1 on the front side and the width direction end portion E _W2 on the other side) facing the other side of the width direction _W (Toward the upper right side of the right-side slope in Fig. 1). The two squeezing grooves 52, 53 are arranged on the outer side of the longitudinal direction L, (More specifically, each extending in a curved shape toward the inner side in the longitudinal direction L while facing the inner side in the width direction W) And has an annular outer shape that is connected to each other to form a heart shape as a whole.

As described above, the sanitary napkin 1 of the present embodiment is characterized in that the pressed portion 5 of the front region A _F has the starting point 51 located on the innermost side in the longitudinal direction L, And the fulcrum 51 has two pressing grooves 52 and 53 extending outwardly in the longitudinal direction L from the sanitary napkin 1 and extending toward both outer sides of the width direction W, Is disposed at a position where the distance L _S from the central axis C _L extending in the longitudinal direction L is within 15% of the width direction L _W of the absorber 4, Since the compression grooves 52 of one of the two compression grooves 52 and 53 are arranged so as to intersect with the central axis C _L of the longitudinal direction L, direction of the central axis forward of the crimp grooves (52) intersecting with (C _L) to the folding base point, located at the two compressed grooves 52, 53 inward side than the longitudinal direction (L) extending in the (L) area (A _F) and a central zero (A _C) and the central portion in the width direction (W) inside, as shown in Figure 4, and projects toward the wearer's skin side, two compressed grooves 52, 53 than a position on the outward side of a longitudinal direction (L) A predetermined portion of the front region A _F is easily deformed so as to stand up toward the wearer's skin surface side, so that the sanitary napkin 1 can be brought into close contact with the wearer's body shape.

The feminine napkin 1 of the present embodiment is characterized in that the starting point 51 of the crimping portion 5 does not overlap with the central axis C _L extending in the longitudinal direction L of the sanitary napkin 1, The excretion liquid such as menstrual blood is discharged from the center axis CL of the longitudinal direction L of the sanitary napkin 1 because the compression grooves 52 are arranged so as to cross the central axis C _L extending in the longitudinal direction _L, ) even if reached by diffusion toward the outside in the bonding part (5) in the longitudinal direction (L) along, the discharged liquid is, the intersection of the longitudinal direction (L) center axis (C _L) and one compressed groove 52 of the (That is, in the direction along one of the compression grooves 52) while keeping the above-mentioned one compression groove 52 as the starting point, Of the sanitary napkin 1 to the starting point 51 of the sanitary napkin 1 and the starting point 51 of the crimping portion 5 to be difficult to reach the longitudinal end portion E _L1 of the sanitary napkin 1 have.

Here, between the distance (L _S) [that is, the starting point 51 and the center axis (C _L) in the longitudinal direction (L) from the center axis (C _L) extending in the longitudinal direction (L) of the starting point (51) Distance L _S ] means the length of the waterline falling from the base point 51 to the central axis C _L of the longitudinal direction L. [ The length L _{W in} the width direction of the absorber 4 is parallel to the width direction _W of the portion of the absorber 4 passing through the base point 51 (that is, the width direction W passing through the base point 51) An intersection point of one straight line and the end in the width direction on one side in the width direction W of the absorber 4 is defined as an intersection point W ₁ and a straight line parallel to the width direction W passing through the base point 51 Means the length between the intersection W ₁ and the intersection W ₂ when the intersection of the widthwise ends on the other side in the width direction W of the absorber 4 is an intersection W ₂ .

Further, since the above-mentioned action and effect of the pressing portion of the present invention are exhibited when the pressing portion integrally integrates at least the surface sheet and the absorbent body in the thickness direction and has the specific starting point and the two pressing grooves, The pressing portion may integrate the topsheet, the absorbent body and the backsheet integrally in the thickness direction, as in the embodiment described above, even if the topsheet and the absorbent body are integrated in the thickness direction.

Further, in the present invention, the above-mentioned two compression grooves extend from the starting point located on the innermost side in the longitudinal direction to the outward side in the longitudinal direction and to the both outer sides in the width direction, Like shape that forms a heart shape as a whole as in the above-described embodiment, as long as it is disposed so as to intersect a central axis extending in the longitudinal direction of the absorbent article.

Therefore, the above-described two compression grooves can be provided in any arrangement as long as the effect of the present invention is not impaired. Such arrangements include, for example, any geometric shape, such as generally V-shaped, substantially U-shaped, circular, elliptical, inverted triangular, rhombic, pentagonal, hexagonal, etc .; Any shape, such as floral, animal, or wavy; An outer shape such as a character, a logo, and a character may be formed. Of these, it is preferable to form an annular outer shape as a whole, such as the above-mentioned heart shape, circle shape, ellipse shape, And it is particularly preferable to form a heart shape.

The two compression grooves extend to the inner side in the width direction on the outer side in the longitudinal direction and are connected to each other so as to have an annular outer shape as a whole, there is no end portion of the compression groove on the outer side in the longitudinal direction Therefore, even if the excreted liquid discharged from the wearer flows along the longitudinal direction along the one compression groove, the excreted liquid can be guided to the other compression groove which is connected to the outside in the longitudinal direction, It is possible to make it difficult to reach the longitudinal end portions of the guide grooves. Even if these two compression grooves have a heart-shaped outer shape as a whole, even if the discharged liquid flows to the outside in the longitudinal direction along the compression grooves, the discharged liquid can be prevented from flowing in the widthwise direction (That is, toward the connection point 54 in the sanitary napkin 1 of the above-described embodiment) toward the longitudinal direction while facing the longitudinal direction end portion of the absorbent article, , It is possible to make it more difficult to reach.

In the present invention, it is preferable that the above-mentioned crimping portion is formed such that an angle formed by one compression groove and a central axis in the longitudinal direction is in a range of 30 DEG or more and less than 90 DEG. For example, in the sanitary napkin 1 of the above-described embodiment, as shown in Fig. 3, the crimping portion 5 has an angle formed by the central axis C _L of one pressing groove 52 and the longitudinal direction L (52d) is in the range of 30 DEG to 90 DEG. When the angle formed by the compression groove 52 on one side and the central axis C _L of the longitudinal direction L is within a range of 30 ° or more and less than 90 占 the excreted liquid discharged from the wearer is in the longitudinal direction L, The force of the flow toward the outer side in the longitudinal direction L of the excreted liquid can be suppressed even if the force is diffused to the outside of the longitudinal direction L along the central axis C _{L of} the excreted liquid and reaches the above- The flow velocity of the dispersed flow of the excreted liquid dispersed in the direction opposite to the intersection 52c is weakened at the intersection point 52c between the one compression groove 52 and the central axis CL . Thereby, the sanitary napkin 1 can make leakage of the excreted liquid from the longitudinal direction end portion E _L1 on the front side more difficult to occur.

3, an angle 52d formed by the one compression groove 52 and the central axis C _L of the longitudinal direction L is defined by the compression groove 52 and the longitudinal direction L ) center axis (the tangent of the compressed groove 52 passing through the point of intersection (52c) of the C _L) (T _L) and of the central axis (C _L), the angle of intersecting the longitudinal direction (L), at least the angle of the .

Further, in the present invention, it is preferable that the above-mentioned crimping portion has a plurality of high-pressure bonding portions with a relatively high density. For example, in the sanitary napkin 1 of the above-described embodiment, as shown in Fig. 3, the crimping portion 5 is formed so as to protrude from the other portion 52b in the crimping groove 52 in the one crimping groove 52 A plurality of high pressure bonding portions 52a pressed at a relatively high pressure are formed in the other pressure bonding groove 53. In the same way as in the other pressure bonding groove 53, A plurality of high-pressure bonding portions 53a are formed. As shown in FIGS. 1 and 3, the plurality of high-pressure bonding portions 52a and 53a are arranged so as to be arranged in one line at predetermined intervals along the direction in which the compression grooves 52 and 53 extend, 2, the plurality of high-pressure bonding portions 52a and 53a are formed so as to have a portion having a depth greater than the other portions 52b and 53b in the thickness direction T, A relatively high density portion).

If a plurality of high-pressure bonding portions 52a, 53a having relatively high density (that is, a deep groove depth) is formed in the compression grooves 52, 53 as described above, The predetermined portion of the front region located on the outer side of the longitudinal direction L from the compression grooves 52 and 53 can be easily deformed so as to rise further toward the skin surface side of the wearer In addition, since the high-pressure bonding portions 52a and 53a having relatively high densities easily develop a capillary phenomenon, the excreted liquid in the pressure grooves 52 and 53 is spot-absorbed and the excretion liquid is prevented from being transferred to the absorber 4 (That is, the excreted liquid can be made more difficult to reach the longitudinal end portion E _L1 on the front side of the sanitary napkin 1). Thereby, the sanitary napkin 1 of the present embodiment can more reliably obtain excellent fitability and can make leakage from the longitudinal direction end portion E _L1 on the front side more difficult.

In the above-described embodiment, the high-pressure bonding portions 52a and 53a in the compression grooves 52 and 53 are formed in the shape of a dot having a substantially circular shape in plan view as shown in Fig. 3, The shape of the high-pressure bonding portion in the invention is not particularly limited, and the high-pressure bonding portion may have an elliptical shape, for example, in a plan view; Triangular shape; And may be formed into any geometric shape such as square, rhombic, or other rectangular shape. In addition, the size of the high-pressure bonding portion is not particularly limited, and even if the high-pressure bonding portion is formed with a width or diameter of a size smaller than the groove width of the compression groove as in the above-described embodiment, Or the like.

In the present invention, the means for forming the compression grooves or the high-pressure bonding portion is not particularly limited. For example, the laminate of the surface sheet and the absorber, or the laminate of the surface sheet, the absorber and the back sheet, (Using a heating or non-heating embossing means having a protruding portion (in the case of forming a high-pressure bonding portion, a protruding portion for forming a press-fit groove together with a high-protruding portion having a protruding height higher than that of the press- , And by pressing in the thickness direction from the skin surface side of the topsheet, the above-mentioned compression groove or high compression bonding portion can be formed.

(Longitudinal direction pressing groove)

1, the sanitary napkin 1 according to the above-described embodiment has a central axis C _{L in} the longitudinal direction _L as a target axis, located on both sides of the (C _L), in addition, the sanitary napkin 1, a pair of first longitudinal compression which extend in the longitudinal direction (L) across the central area (a _C) from the front area (a _F) of the groove (7 , 7), and the pair of the first longitudinal compression home (located in each rear side of the 7,7), and, over the central area (a _C) a back region (a _B) from the sanitary napkin 1 , And a pair of second longitudinal compression grooves (8, 8) extending in the longitudinal direction (L) with a shorter length than the first longitudinal compression grooves (7, 7). Also in the first longitudinal compression grooves 7 and the second longitudinal compression grooves 8 and 8, a plurality of high compression portions identical to the compression grooves 52 and 53 described above are formed in the respective compression grooves Respectively.

It is not essential for the absorbent article of the present invention to have such longitudinal compression grooves. However, if the absorbent article has such longitudinal compression grooves, the excreted liquid such as menstrual discharge discharged from the wearer is absorbed in the width direction of the absorbent article It is possible to diffuse the excreted liquid in the longitudinal direction while preventing the flow of the excreted liquid in the width direction while preventing the exudate from leaking out of the end portion in the width direction of the absorbent article And the absorptive liquid can be absorbed in a wide range in the longitudinal direction of the absorbent article (specifically, of the absorbent body), and the absorbent performance of the absorbent body can be efficiently utilized. Further, when the absorbent article has such a longitudinal compression groove, the longitudinal compression groove becomes a folding starting point, and the absorbent article can be easily deformed to have a substantially W-shaped cross section along the width direction , The central portion in the width direction of the absorbent article protrudes toward the skin surface side of the wearer when the absorbent article is worn, so that the absorbent article can easily come into close contact with the wearer's crotch portion (i.e., the fitability is further improved). In addition, when the absorbent article is deformed to have a substantially W-shape in this way, the excreted liquid discharged from the wearer is likely to spread outward in the longitudinal direction along the central axis extending in the longitudinal direction of the absorbent article, Since the absorbent article of the present invention has the specific crimping portion, it is difficult for the excreted liquid to reach the longitudinal direction end portion of the absorbent article, and leakage of the excreted liquid from the longitudinal direction end portion can be suppressed.

The longitudinal compression grooves are formed in a pair of first longitudinal compression grooves and a pair of second longitudinal compression grooves located on the rear sides of the pair of first longitudinal compression grooves, The low rigidity portion between the first longitudinal compression grooves and the second longitudinal compression grooves is easily bent so that the absorbent article can be deformed so as to be wrapped around the body shape of the wearer, It is possible to exhibit excellent fit performance.

The shape viewed from the plane of the longitudinal compression grooves is not particularly limited as long as the effect of the present invention is not impaired. In addition to the shape (see FIG. 1) in which the curves are combined as in the above-described embodiment, Wave rectilinear, zigzag, or the like can be employed.

Further, in the present invention, the method for producing the absorbent article using the various members described above is not particularly limited, and any known manufacturing method in the art can be employed.

For example, the sanitary napkin 1 of the above-described embodiment is obtained by joining the topsheet 2 and the absorbent body 4 with an arbitrary joining means (for example, hot melt adhesive or the like) to obtain a laminate, (A predetermined portion of at least a region to be a front region) in the thickness direction from the surface sheet side is formed, and the backsheet is bonded to the surface of the laminated body on which the bonded portion is formed, For example, a hot-melt type adhesive, a heat fusion means, or the like) to manufacture the sanitary napkin 1 described above.

The present invention can be applied to various absorbent articles such as a panty liner, for example, in addition to the sanitary napkin of the above-described embodiment. Further, the absorbent article of the present invention is not limited to the above-described embodiment and the like, and can be appropriately combined, substituted, or changed within the scope not deviating from the object and purpose of the present invention. In the present specification, the ordinal numbers such as "first", "second" and the like are used to distinguish the items attached to the order, and do not mean the order, priority, importance, etc. of each item.

1 sanitary napkin (an example of "absorbent article")
2 surface sheet
3 back seat
4 absorber
5 pressing part
51 origin
52 One of the compression grooves
53 The other side of the compression groove
6 pressing portion (rear region)
7 First longitudinal compression groove
8 Second longitudinal compression groove
9 flap portion

Claims (5)

An absorbent article having a longitudinal direction and a transverse direction, comprising a top sheet, a back sheet, and an absorbent body positioned between the sheets,
Wherein the absorbent article has a central region opposed to the crotch portion of the wearer when worn and a front region adjacent to the front side of the wearer in a plan view and having at least a compression bonding portion for integrating at least the topsheet and the absorbent body And,
The crimping portion has two fulcrum portions extending from the fulcrum located on the innermost side in the longitudinal direction and on the outer side in the longitudinal direction from the fulcrums and toward both outer sides in the width direction,
The starting point is located at a position which is not overlapped with a central axis extending in the longitudinal direction of the absorbent article and the distance from the central axis is within 15% of the width direction of the absorbent article,
Wherein the two compression grooves are arranged such that one compression groove intersects the central axis. The absorbent article as set forth in claim 1, wherein the compression grooves have a plurality of high-pressure bonding portions having a relatively high density. The absorbent article as set forth in claim 1 or 2, wherein the angle formed by said one of said compression grooves and said central axis is at least 30 degrees and less than 90 degrees. The absorbent article as set forth in claim 1 or 2, wherein said two compression grooves extend outwardly in the width direction toward the inner side in the width direction and are connected to each other, article. The absorbent article according to claim 4, wherein the annular outer shape is a heart-like outer shape.

Images