JP2019154979A - Absorbent article - Google Patents

Abstract

To provide an absorbent article making a direction of attachment recognizable by a touch sense, and reducing the feeling of incompatibility during wearing.SOLUTION: A roughly planar absorbent article comprises: a liquid-permeable inner sheet; a liquid-impermeable outer sheet; and an absorber provided between the inner sheet and the outer sheet. There is provided an identification body identical by a touch sense at the outer sheet side at least in one of the front and rear end areas, and the identification body is formed so as to shift from a swelling state in which gas is encapsulated to a constricting state in which the gas is released.SELECTED DRAWING: Figure 1A

Description

  The present invention relates to an absorbent article.

  Conventionally, pad-type, tape-type, pants-type disposable diapers, sanitary napkins and the like are known as absorbent articles. Absorbent articles are generally planar and are often configured to be worn in a predetermined orientation according to the shape of the body.

  Some of such absorbent articles have been devised so that the orientation of the absorbent article can be recognized even when worn in a dark place with little light. For example, Patent Literature 1 discloses an absorbent article provided with unevenness that can be recognized with the sense of a fingertip of a hand.

JP 2005-46263 A

  However, in the absorbent article disclosed in Patent Document 1, the thickness of the convex portion is larger than the surrounding thickness, and such thickness does not change even after the absorbent article is mounted. Therefore, when the range including the convex part is pressed after the absorbent article is mounted, for example, when the body lies on the part where the convex part is provided, the convex part hits the body and feels strange. May occur.

  In view of the above points, an object of the present invention is to provide an absorbent article in which the wearing direction can be recognized by tactile sensation and the uncomfortable feeling during wearing can be reduced.

  A first aspect of the present invention includes a liquid-permeable inner sheet and a liquid-impermeable outer sheet, and a substantially flat surface including an absorbent body provided between the inner sheet and the outer sheet. The absorbent article is provided with an identification body that can be identified by tactile sensation on at least one of the front and rear end regions on the outer sheet side, and the identification body is a bulge filled with gas. The gas is released from the exited state and is in a contracted state.

  According to the first aspect, at least one of the front and rear end regions is provided with an identification body that can be identified by tactile sense. Therefore, it is possible to identify the direction of the absorbent article (whether it is the front or the rear of the absorbent article) even in a dark place where light is poor or a visually impaired person. Can be installed.

  Moreover, the identification body in this form is comprised so that it may be in a contracted state from the bulging state in which gas was enclosed. Therefore, when the absorbent article is mounted or after mounting, the gas sealed in the identification body is released to contract the identification body, and the thickness of the identification body can be reduced. Thereby, when the area | region in which the identification body is provided is pressed during mounting | wearing of an absorbent article, the uncomfortable feeling produced by pressing an identification body against a body can be reduced.

  In the second aspect of the present invention, the identification body has a fragile portion.

  According to the second aspect, since the identification body has the fragile portion, the identification body is easily broken at the fragile portion. Therefore, the identification body can be broken with a relatively small force, and the gas can be released from the broken portion, so that the identification body can be easily contracted.

  In the third aspect of the present invention, the identification body is arranged on the outer sheet, and is configured to be in the contracted state by breaking the outer sheet.

  According to the said 3rd form, an identification body can be made into a contracted state by the fracture | rupture of an outer sheet | seat. Since the operation of breaking the outer sheet is performed relatively consciously, it is possible to prevent the discriminating body from being inadvertently crushed or the like before being attached.

  In the fourth aspect of the present invention, the outer sheet has a cleavable line, and the identifier is disposed on the cleavable line or an extension line of the cleavable line, and the contraction is caused by the cleavage of the cleavable line. It becomes a state.

  According to the fourth aspect, the outer sheet has a cleavable line, and the discriminator is in a contracted state by the cleavage of the cleavable line. For this reason, the outer sheet can be easily and reliably broken.

  In the fifth aspect of the present invention, a reverse box ridge is formed on the outer sheet so as to abut against the ridge, and the identification body is disposed on an edge of the ridge and opens the reverse box ridge. This results in the contracted state.

  According to the said 5th form, it is comprised so that an identification body may be in a contracted state by opening the reverse box basket formed in the outer sheet | seat. Therefore, the identification body can be brought into a contracted state with a relatively small force.

  In the sixth aspect of the present invention, the identifier is brought into the contracted state by pulling in the width direction orthogonal to the front-rear direction.

  According to the sixth aspect, the identifier can be brought into a contracted state by pulling the outer sheet in the width direction. When mounting the absorbent article, the end region is usually stretched by pulling outward in the width direction. Therefore, the discriminating body can be brought into a contracted state by cleaving the cleavable line or opening the box cage by a normal natural operation.

  In the seventh aspect of the present invention, the identification body is a sealed bag-like body bonded to the outer sheet.

  According to the seventh aspect, since the identification body is a sealed bag-like body, in the bulging state, the gas can be reliably sealed in the identification body, and the bulging state of the identification body can be reliably maintained.

  In the eighth embodiment of the present invention, the gas is sealed in a space formed by the outer sheet and a bag-like half piece bonded to the outer sheet.

  According to the eighth aspect, the identification body is formed by enclosing gas in a space formed by the outer sheet and the bag-shaped half piece. Since the outer sheet is used as a component of the discriminator, the material for forming the discriminator can be reduced.

  According to one embodiment of the present invention, it is possible to provide an absorbent article in which the wearing direction can be recognized by tactile sense and the uncomfortable feeling during wearing can be reduced.

It is the top view which looked at the absorbent article by one form of this invention from the outer surface. It is the II sectional view taken on the line of FIG. 1A. It is a figure after the identification body of the absorbent article shown to FIG. 1B changed to the contracted state. It is the top view which looked at the absorbent article by one form of this invention from the outer surface. It is the II-II sectional view taken on the line of FIG. 2A. It is the top view which looked at the absorbent article by one form of this invention from the outer surface. It is the III-III sectional view taken on the line of FIG. 3A. It is the top view which looked at the absorptive article by one form of the present invention from the skin opposed side. It is the IV-IV sectional view taken on the line of FIG. 4A. It is a figure after the identification object of the absorptive article of Drawing 4A changed into a contraction state. It is the VV sectional view taken on the line of FIG. 4C. It is the top view which looked at the absorptive article by one form of the present invention from the skin opposed side. It is the VI-VI sectional view taken on the line of FIG. 5A. It is a figure after the identification object of the absorptive article of Drawing 5A changed into a contraction state. It is the VII-VII sectional view taken on the line of FIG. 5C. It is the top view which looked at the absorptive article by one form of the present invention from the skin opposed side. It is the VIII-VIII sectional view taken on the line of FIG. 6A. It is the figure after the identification body of the absorbent article shown to FIG. 6B changed to the contracted state.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, unless otherwise specified, the same or corresponding components may be denoted by the same reference numerals and description thereof may be omitted.

  FIG. 1A is a plan view of an absorbent article 100 according to an embodiment of the present invention as viewed from the outer surface (the surface opposite to the surface facing the skin when worn). FIG. 1B shows a cross-sectional view taken along line II of FIG. 1A. Below, the form of this invention is demonstrated based on the example of a pad type disposable diaper (urine collection pad).

  As shown in FIG. 1A and FIG. 1B, the absorbent article 100 is provided on the inner sheet 22 provided on the side facing the skin (also referred to as the skin facing surface) when worn, and on the outer surface opposite to the skin facing surface. The outer sheet | seat 21 provided and the absorber 30 provided between both the sheets 21 and 22 are provided, and it has a substantially planar shape. The term “substantially planar” refers to a flat shape (also referred to as a sheet shape or a layer shape) that is thin and wide, but includes a surface that is partially bulged or partially grooved. It is.

  The outer sheet (also referred to as a back sheet) 21 is liquid-impermeable and can prevent leakage of body fluid from the outer surface. The outer sheet 21 can constitute the outermost surface of the absorbent article 100, and can be a sheet that comes into contact with an underwear, clothing, an outer diaper, or the like when the absorbent article 100 is mounted. As the outer sheet 21, in addition to a polyethylene film, a sheet having moisture permeability can be used without impairing water shielding from the viewpoint of preventing stuffiness. This water-impervious / breathable sheet is a microporous sheet obtained by, for example, melt-kneading an inorganic filler in an olefin resin such as polyethylene or polypropylene to form a sheet, and then stretching in a uniaxial or biaxial direction. Can be used.

  The inner sheet (also referred to as a top sheet) 22 is liquid permeable, and has a function of allowing body fluid to permeate quickly and transfer to the absorber 30. When the absorbent article 100 is mounted, the inner sheet 22 can be a sheet that contacts the skin. As the inner sheet 22, a perforated or non-porous nonwoven fabric, a perforated plastic sheet, or the like can be used. As the raw material fibers constituting the nonwoven fabric, synthetic fibers such as polyethylene and polypropylene such as olefin, polyester and amide, recycled fibers such as rayon and cupra, and natural fibers such as cotton can be used.

  Between the inner sheet 22 and the absorbent body 30, an intermediate sheet having a function of preventing the bodily fluid absorbed by the absorbent body 30 from returning may be interposed. As the intermediate sheet, it is preferable to use materials having low water retention and high liquid permeability, such as various nonwoven fabrics and mesh films.

  Absorbent body 30 may be a pile of pulp fibers, an aggregate of filaments such as cellulose acetate, a non-woven fabric, etc., and may be formed by mixing and adhering a superabsorbent polymer such as particles as necessary. Can be used. In order to prevent spillage of particles, such as when mixing superabsorbent polymer particles, it is preferable that the absorber 30 is wrapped in a packaging sheet. Further, as the absorbent body 30, a polymer sheet that does not contain fibrous materials such as pulp can be partially used.

Although the fiber basis weight and the basis weight of the superabsorbent polymer in the absorbent body 30 can be determined as appropriate, the fiber basis weight can be set to 100 to 700 g / m ² , preferably about 100 to 600 g / m ^2, and absorbability is also achieved. The basis weight of the polymer can be about 50 to 550 g / m ² , preferably about 100 to 350 g / m ² . Moreover, the thickness of the absorber 30 can be 3-30 mm except the part in which the groove | channel and the slit are formed, Preferably it can be set as about 7-15 mm.

  The absorber 30 may be a single layer or may be composed of two or more layers. Moreover, the absorber 30 may be wrapped with a packaging sheet such as a nonwoven fabric or crepe paper. When the absorber 30 is comprised from multiple layers, a packaging sheet can also be interposed between layers. The packaging sheet may be uncolored (that is, white) or may be colored. The color can be a color that can make the color of the discharged body fluid inconspicuous, for example, a color close to the color of the body fluid, or a color complementary to or close to the color of the body fluid.

  In addition, the absorbent body 30 may be provided with a groove or a slit in order to control the flow of bodily fluids or to facilitate deformation according to the body.

  In this embodiment, the absorbent article 100 has an elongated shape as a whole in plan view. That is, the absorbent article 100 has a predetermined length in the first direction (front-rear direction) D1, and a predetermined width smaller than the above length in the second direction (width direction) D2 orthogonal to the first direction D1. Have. The length (full length) of the absorbent article 100 in the front-rear direction D1 can be about 350 to 700 mm, and the length (full width) in the width direction D2 can be about 130 to 400 mm. The shape of the absorbent article 100 can be axisymmetric with a center line CL extending in the front-rear direction (center line in the front-rear direction) as a symmetry line, but is not necessarily line-symmetric. The configuration of the absorbent article 100 (the size, shape, arrangement, etc. of each element such as the inner sheet 21, the outer sheet 22, and the absorber 30) may also be axisymmetric, but the shape and configuration of the absorbent article 100 Both need not be line symmetric.

  As shown in FIG. 1A, the absorbent article 100 has a front end region F that is a region including a front end portion and a rear end region R that is a region including a rear end portion. The central region M is between the front end region F and the rear end region R. The central area M may include a crotch corresponding area C in front of it. In the form of FIG. 1A, the front end region F and the rear end region R do not include the crotch corresponding region C, but may include a part of the crotch corresponding region C.

  In the present specification, the “groin corresponding region” means a portion corresponding to the crotch (inseam) of the body at the time of use. The crotch-corresponding region C may be, for example, a range from the center in the front-rear direction of the absorbent article or a vicinity thereof to a predetermined position in front, or a predetermined range in the center in the front-rear direction of the absorbent article. In the illustrated embodiment, the width of the absorbent article 100 is substantially constant, but the absorbent article 100 may be formed with a constricted portion having a narrow width. And the area | region in which the narrow part is formed, or its part can also be made into a crotch corresponding | compatible area | region.

  In addition, the length of the front-end direction F1 of the front end part area | region F and the rear end part area | region R can be about 40-100 mm. When the absorbent article 100 is mounted, the front (front end region F side) is on the ventral side and the rear (rear end region R side) is on the back side. Further, the front end region F and / or the rear end region R may be simply referred to as an end region.

  The outer sheet 21 and the inner sheet 22 may be bonded to each other at the end of the absorbent article 100 (both ends in the front-rear direction D1 and both ends in the width direction D2) without the absorber 30. Moreover, the gather sheets 24 and 24 (or side nonwoven fabric) in which the expansion-contraction member for forming a gather was integrated along the front-back direction D1 in the both ends (both sides) of the width direction D2 of the absorbent article 100. It may be provided. In that case, the gather sheet 24 and the outer sheet 21 may be bonded to both ends of the absorbent article 100 in the width direction D2. In addition, said bonding can be formed by a hot-melt-adhesive, a heat seal, and an ultrasonic seal, for example.

  As shown in FIGS. 1A and 1B, the absorbent article 100 includes an identification body 80 that can be identified by tactile sense on the outer surface side (outer sheet 21 side). 1A and 1B show a state before use (a bulging state) in which a gas 82 is sealed in the identification body 80 and bulges or protrudes from the outer surface of the absorbent article 100. The presence of the identification body 80 in the bulging state can be easily recognized by touching it with a hand or a finger. Therefore, even in a dark room with poor light, the wearer (the assistant when the assistant wears the wearer) can easily identify the wearing direction (which is the front and which is the rear). Further, even the wearer or the wear assistant who is weak in vision can easily identify the wearing direction.

  In FIG. 1A, the identification body 80 is provided in the front end region F, but may be provided in the rear end region R, or provided in both the front end region F and the rear end region R. It may be done. When discriminating bodies are respectively provided in the end regions F and R, it is preferable that both discriminating bodies are made different so that the difference can be discriminated by touch.

  The identification body 80 in the absorbent article 100 is a sealed bag-like body 82, and the bag-like body 82 is bonded to the outer sheet 21. Such an identification body 80 is prepared in advance by forming a bag-like body 82 in which a gas 86 is sealed, and the bag-like body 82 is attached to the outer sheet 21 with an adhesive surface 82a (shown by hatching in FIG. 1A) having a predetermined area. It can be manufactured by bonding.

  As shown in FIG. 1A, the bag-like body 82 may be bonded to the outer sheet 21 with an adhesive surface 82a having an area that is at least half of the area of the bag-like body 82 in plan view. Thereby, it becomes difficult for the bag-like body 82 to come off from the outer sheet 21, and it is possible to prevent the identification body 80 from being detached before the absorbent article 100 is used. Further, for example, the bag-like body 82 is formed in a spherical shape, and is adhered to the outer sheet 21 while substantially maintaining the spherical shape, so that the bag-like body 82 has an adhesive surface having a smaller area than that in the form of FIG. 1B. And the outer sheet 21 can be bonded together.

  Adhesion between the bag-like body 82 and the outer sheet 21 can be performed with an adhesive, a double-sided adhesive tape, a double-sided adhesive tape, or the like. Further, depending on the material of the bag-like body 82 and / or the outer sheet 21, the bonding can be performed using heat fusion.

  The identification body 80 in the bulging state in FIG. 1A and FIG. 1B can release the internal gas 86 by breaking the bag-like body 82 and change it into a contracted state. The bag-like body 82 can be broken by, for example, placing a finger or palm on the identification body 82 and applying a force to crush the bag-like body 82.

  FIG. 1C shows a state after the identification body 80 shown in FIG. 1B is crushed. In the state shown in FIG. 1C, in the identification body 80, a part of the bag-like body 82 is broken, and the sealed gas 86 is released. Thereby, the bag-like body 82 is deflated and contracted. In this specification, as shown in FIG. 1C, a state in which the gas 86 is released from the bulging portion of the identification body 80 and the bulging is eliminated is referred to as a contracted state. In this embodiment, the portion where the bag-like body 82 is broken depends on the configuration of the bag-like body 82, the bonding type, the manner of crushing, and the like. When the rigidity of the bonding surface 82a between the bag-like body 82 and the outer sheet 21 is high, stress tends to concentrate on the edge portion of the bonding surface 82a, and therefore, it may break near the edge portion of the bonding surface 82a. Further, depending on the shape of the bag-like body 82, there may be a case where the bag is broken at a portion where stress generated by pressure from the gas tends to concentrate. The fracture site can be linear or dotted.

  As described above, the identification body 80 can release the sealed gas 86 from the bulging state to be in a contracted state. Therefore, the thickness of the identification body 80 can be reduced during or after the absorbent article 100 is mounted. The thickness can be reduced or the thickness can be substantially eliminated.

  In the conventional configuration, the discriminating body still has a thickness that can be discriminated by touch even after being worn. Therefore, when the part where the identification body is provided is pressed, for example, when wearing clothing having strong elasticity, or when the body is lying on the part where the identification body is provided, etc. However, the discriminating body may hit the body and cause a sense of incongruity. On the other hand, according to the above configuration according to the present embodiment, the identification body 80 can be in a contracted state when or after the absorbent article 100 is mounted, and the thickness of the identification body can be reduced or substantially eliminated. Therefore, it is possible to reduce or eliminate the uncomfortable feeling during wearing that may be caused by the identification body 80.

  In addition, the absorbent article may be folded and stored in layers, or may be stored by being pushed into a package, and a large compressive force may be applied to the absorbent article identifier located in the lower layer There is sex. Therefore, it is preferable to adopt a configuration that is difficult to be crushed against such a force. In that case, it can be set as the structure which discharges | emits the enclosed gas without being crushed. For example, when the identification body 80 including the bag-like body 82 is brought into a contracted state, the bag-like body 82 is rolled by moving from the side surface of the bag-like body 82 so as to be peeled off from the outer sheet 21. The bag-like body 82 can be broken at the edge of the bonding surface 82a.

  In addition, a hole or a flaw may be made in the bag-like body 82 using a tool and the gas 86 may be released therefrom. However, the identification body 80 can be used with normal force by a human hand without using a tool. It is preferable that the gas 86 in the cylindrical body 82 is discharged to be in a contracted state.

  The gas 86 enclosed in the bag-like body 82 is preferably air from the viewpoint of cost, but a gas having low reactivity such as nitrogen or a rare gas may be used. In addition, the gas 86 may contain a predetermined substance such as an aroma component or a deodorant component. In that case, if the gas 86 enclosed in the identification body 80 can be released to the outside of the absorbent article 100 (that is, in a space such as a room), the substance spreads in the space such as the room, It is possible to provide the absorbent article 100 that exhibits an aroma action and a deodorizing action when worn. In that case, a healing effect can be imparted by adjusting the fragrance component when the absorbent article is attached or exchanged (for example, at the time of so-called diaper exchange).

  The material forming the bag-like body 82 of the identification body 80 is gas that has been sealed by breaking the gas 86 in such a manner that the gas 86 is sealed to form a bulging state and can be maintained. If it can discharge | release, it will not specifically limit. The material forming the bag-like body 82 is identified together with the sheet-like members (the outer sheet 21 and the inner sheet 22) in the absorbent article 100 in a normal wearing operation or with the movement of the wearer's body after wearing. What has flexibility is preferable so that the body 80 can be deformed to some extent.

  The material forming the bag-like body 82 can be, for example, a resin film. Specifically, polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), polystyrene (PS), polyvinyl chloride (PVC), ethylene-vinyl acetate copolymer (EVA), polyamide (PA), etc. A resin film can be used. As the material of the flexible film, polyethylene, polypropylene, polyethylene terephthalate, etc. are preferable because they are soft and easy to handle, and are inexpensive. They are odorless, excellent in water resistance and chemical resistance, and low in cost. From the viewpoint of mass production, polyethylene is preferable. As the polyethylene, high-density polyethylene, low-density polyethylene, or the like can be used. A laminate film obtained by laminating a plurality of films may be used, or a film made of a mixture of two or more kinds of resins among the above.

  The thickness of the material (film) forming the bag-like body 82 can be appropriately selected depending on the material of the bag-like body 82, the overall shape of the bag-like body 82, the configuration such as the presence or absence of a fragile portion described later, It can be set to about 25 to 50 μm.

  In the form of FIG. 1A, the identification body 80 exists at a position away from the front end of the absorbent article 100. In this case, the distance from the end of the absorbent article 100 to the identification body 80 may be about 5 to 50 mm. However, the identification body 80 may be arrange | positioned so that it may protrude from the edge part of the absorbent article 100 by planar view.

  The position in the width direction D2 where the identification body 80 is provided is not particularly limited. However, it is preferable that the identification body 80 is disposed near the center in the width direction D, particularly on the front-rear direction center line CL as in the form of FIG. Further, even in a dark environment, the center position in the width direction D2 can be easily understood, so that the mounting operation is facilitated.

  Moreover, in the form of FIG. 1A, the identification body 80 is located in the area | region where the absorber 30 is arrange | positioned by planar view, However, The position of the identification body 80 is not restricted to the thing of illustration. For example, the identification body 80 is in a region where the absorber 30 is not disposed, for example, a region where the outer sheet 21 and the inner sheet 22 are bonded, or a region where the outer sheet 21 and the gather sheet 24 are bonded. It may be arranged. Moreover, the identification body 80 may be arrange | positioned ranging over both the area | region where the absorber 30 is arrange | positioned, and the area | region which is not arrange | positioned by planar view.

  The bulging portion of the identification body 80 in the bulging state (the portion of the identification body 80 protruding from the outer surface, the bag-like body 82 in the form of FIG. 1A) has a circular shape, and the cross-sectional shape is substantially elliptical. However, the shape of the bulging portion of the identification body 80 is not limited to that shown in the figure. For example, the shape of the bulging portion of the identification body 80 in plan view may be an ellipse, a polygon such as a triangle or a quadrangle, a heart shape, a drop shape, or the like. The cross-sectional shape may also be an ellipse, a polygon, etc., or a shape close thereto.

  If the stress generated in the identification body 80 due to the pressure of the enclosed gas is to be made uniform, the shape of the identification body 80 in the bulging state (including the shape in plan view and the cross-sectional shape) is a shape without a corner (vertex). Or a shape with rounded vertices). The shape of the identification body 80 in the bulging state can be a spherical shape or an elliptical spherical shape. On the other hand, when the stress generated in the identification body 80 due to the pressure of the enclosed gas is concentrated at a predetermined location and a fractured portion is to be formed at a desired position, the shape of the identification body 80 in the bulging state is changed to a corner corner. It is also possible to configure so that breakage occurs at the corners.

  A plurality of identification bodies 80 may be provided. For example, the identification body 80 can be an aggregate of circular bulges in a plan view, and the aggregate can be braille. Thereby, it becomes possible for the wearer or the wearer with weak eyesight to read and identify the direction in which the absorbent article 100 is worn.

Although the size of the bulging portion of the identification body 80 is not particularly limited, the length of the bulging portion of the identification body 80 in the front-rear direction D1 is 5 to 35 mm, and the length in the width direction D2 is 5 to 35 mm. preferable. Moreover, it is preferable that the volume of the gas sealed in the bulging state of the identification body 80 is 130 to 19,300 mm ² . Moreover, the thickness of the bulging part of the identification body 80 (length in the thickness direction of the absorbent article 100) can be about 5 to 15 mm.

  When wearing absorbent articles, the wearer often wears gloves and touches the absorbent article through the gloves, but in that case, the tactile sensation tends to be dull compared to touching the absorbent article with bare hands. . Since the bulging portion of the identification body 80 has the size and thickness of the planar view as described above, the wearer or the wearer can wear the absorbent article 100 even when wearing a glove and the sense of touch is dull. It can be easily recognized.

  FIG. 2A is a plan view of an absorbent article 200 according to another embodiment of the present invention viewed from the outer surface. FIG. 2A partially shows only the front end region F and the region in the vicinity thereof. FIG. 2B shows a cross-sectional view taken along line II-II in FIG. 2A.

  The basic configuration of the absorbent article 200 is the same as that of the above-described absorbent article 100 (FIGS. 1A to 1C), but the identification body 280 is not formed of a bag-like body, but the outer sheet 21. And the absorbent article 100 in that the bag-shaped half piece 284 is configured. In the identification body 280, a gas 86 is sealed in a space formed by the outer sheet 21 and the bag-shaped half piece 284. In this embodiment, since the outer sheet 21 can be used as a component of the identification body 280, the material for configuring the identification body 280 can be reduced.

  2A and 2B show a bulging state in which the gas 86 is sealed in the identification body 280. FIG. 2A and 2B, the bag-shaped half piece 284 is bonded to the outer sheet 21 at the periphery thereof. That is, the adhesive surface 284a (shown by hatching in FIG. 2A) between the bag-shaped half piece 284 and the outer sheet 21 is formed in an annular shape in plan view. The shape in plan view of the ring of the bonding surface 284a is not particularly limited, and may be the same as or different from the shape in plan view of the bag-shaped half piece 284. In order to make the pressure received from the sealed gas 86 uniform, the shape of the bonding surface 284a in plan view is preferably a shape without corners, more preferably a circle.

  The type of adhesion between the bag-shaped half piece 284 and the outer sheet 21 is not particularly limited as long as gas is not released in the bulging state of the identification body 280, and preferably airtightness is maintained between the two. Not. A format similar to the bonding format between the bag-like body 82 and the outer sheet 21 described for the absorbent article 100 can be used.

  In order to form the identification body 280 in the absorbent article 200, gas is sealed in the bag-shaped half piece 284 that is shaped or deformed so as to have a bulge and a margin for the bonding surface 284a at the periphery. Thus, it can be bonded to the outer sheet 21 with the bonding surface 284a. Alternatively, the bag-shaped half piece 284 and the outer sheet 21 may be bonded together with the bonding surface 284a, and then the needle may be inserted into the outer sheet 21 or the bag-shaped half piece 284 to inject the gas. However, in the latter case, after the needle is pulled out, the hole formed in the outer sheet 21 or the bag-shaped half piece 284 is closed by the needle so that airtightness is maintained, or in the bulging state of the identification body 280, It is preferable to use a check valve so that the enclosed gas is not released to the outside.

  The identification body 280 in the bulging state in FIGS. 2A and 2B evacuates the internal gas 86 by breaking the bag-shaped half 284 or by breaking the bond between the bag-shaped half 284 and the outer sheet 21. It can be released and brought into a contracted state. For example, as described in the identification body 80 (FIGS. 1A to 1C), the identification body 280 can be crushed by placing a finger or palm on the identification body 280 and applying a force.

  Whether the change from the swollen state to the contracted state is due to the breakage of the bag-shaped half piece 284 or the bond breakage between the bag-shaped half piece 284 and the outer sheet 21, and at which position the breakage or the bond breakage occurs. This depends on the material and thickness of the bag-shaped half piece 284, the type of bonding between the bag-shaped half piece 284 and the outer sheet 21, the manner of crushing, and the like.

  The material and thickness of the bag-shaped half piece 284 may be the same as those described above for the bag-shaped body 82 (FIGS. 1A to 1C). In addition, other configurations, that is, the type of gas 86, the bonding means of the bag-shaped half piece 284, the shape of the bulging portion of the identification body 280 (in the form of FIG. 2A, the portion from which the bag-shaped half piece 284 protrudes), the identification body 280 itself The arrangement and the like can also be the same as those described in the absorbent article 100 (FIGS. 1A to 1C).

  2A and 2B, in the form in which the outer sheet 21 and the bag-shaped half piece 284 form the identification body 280, the outer sheet 21 is airtight at least in a portion where the identification body 280 is formed. Is preferably high, and preferably has no moisture permeability.

  FIG. 3A shows a plan view of an absorbent article 300 according to another embodiment of the present invention as seen from the outer surface. FIG. 3A partially shows only the front end region F and the region in the vicinity thereof. FIG. 3B shows a cross-sectional view taken along line III-III in FIG. 3A. FIG. 3B is a cross-sectional view at a position where the identification body 380 is not included. That is, FIG. 3B does not include a cross-sectional view of the identification body 380. 3A and 3B show the bulging state of the identification body 380. FIG.

  The basic configuration of the absorbent article 300 is the same as that of the absorbent article 100 (FIGS. 1A to 1C). That is, the identification body 380 is a sealed bag-like body 382, and the bag-like body 382 is bonded to the outer sheet 21 with the bonding surface 382a. However, it differs from the absorbent article 100 in that the weakened portion 388 is formed on the identification body 380 (bag-like body 382).

  Similar to the identification body 80 (FIGS. 1A to 1C) in the absorbent article 100 and the identification body 280 (FIGS. 2A and 2B) in the absorbent article 200, a part of the identification body 380 is broken by an external force or the like. And it can change from a bulging state to a contraction state by discharge | releasing internal gas from this fracture | rupture site | part. At this time, since the weakened portion 388 is provided in the identification body 380, the weakened portion 388 can be used as a broken portion. When the weakened portion 388 is not provided and the stress generated in the identification body is relatively uniform, it is necessary to apply a relatively large force when the identification body 380 is crushed. Further, depending on the configuration of the discriminating body, a loud sound may be generated by crushing and bursting the discriminating body with a strong force. On the other hand, in the identification body 380 in the absorbent article 300, since the bag-like body 382 is broken at the weakened portion 388 formed in advance, the bag can be broken with a relatively small force. It can be easily changed from a state to a contracted state.

  For example, the fragile portion 388 may be a portion whose thickness is smaller than other portions. For example, when the bag-like body 382 is formed, a groove that is recessed from the outer surface to the inner surface or from the inner surface to the outer surface can be formed by pressing a press die having an inverted shape of the groove. Further, it can be formed by making a shallow cut on one side of the bag-like body 382 with a blade-like member. Or the weak part 388 can also be formed by squeezing the predetermined part of the bag-like body 382 by heat sealing or the like to increase the rigidity so that stress is easily collected at the edge of the compressed part. . Further, the size and shape of the fragile portion 388 are not particularly limited, and depending on the size of the identifier 380, when the fragile portion 388 is formed in a linear shape, the length and the length of about 1 to 20 mm and 0.3 It can have a width of about ~ 1.5 mm.

  3A and 3B, the fragile portion 388 is formed at a position close to the bonding surface 382a, but the position at which the fragile portion 388 is formed is not particularly limited. However, when the identification body is to be crushed, a force is applied to the outer sheet 21 usually with a finger or palm placed on the identification body, so that the fragile portion 388 is identified by the identification body 380 (bag-like body 382). By being formed not on the upper part but on the side part, it is possible to avoid the broken part from being blocked by a finger, a palm or the like.

  In addition, the above-mentioned weak part 388 is not only the structure (FIGS. 3A and 3B) provided with the bag-like body 382 described in this embodiment, but also the outer sheet and the bag-like shape as described in FIGS. 2A and 2B. The present invention can be applied to a configuration including a half piece, and the same effect can be obtained.

  FIG. 4A shows an absorbent article 400 according to another aspect of the present invention. In FIG. 4A, the top view seen from the skin opposing surface side (side in which the inner sheet | seat 22 is provided) of the absorbent article 400 is partially shown only the front edge part area | region F and the area | region of the vicinity. 4B shows a cross-sectional view taken along the line II-II in FIG. 4A. 4A and 4B show the bulging state of the identification body 480. FIG.

  The basic configuration of the absorbent article 400 is the same as that of the absorbent article 200 (FIGS. 2A and 2B). That is, the gas 86 is sealed in the space formed by the outer sheet 21 and the bag-like half 484 bonded to the outer sheet 21 with the bonding surface 484a, and the identification body 480 is formed. However, it differs from the absorbent article 200 in that a cleavable line 489 is formed from the front end of the absorbent article 400 toward the identification body 280. Moreover, it differs from the absorbent article 200 also in the point which the identification body 480 is extended on the area | region where the absorber 30 is not arrange | positioned. Note that the identification body 480 is disposed across the region where the absorber 30 is disposed and the region where the absorber 30 is not disposed, but does not extend to the region where the absorber 30 is disposed, It is preferable to arrange in an area where the absorber 30 is not arranged.

  The cleavable line 489 is a line that can be cleaved by a normal human force, for example, by grasping and pulling both sides of the cleavable line 489 with both hands. The tearable line 489 is formed at least on the outer sheet 21. As shown in FIGS. 4A and 4B, the cleavable line 489 may extend from the end of the absorbent article 400 to the front of the bag-shaped half piece 489 or to a position reaching the bag-shaped half piece 489.

  The identification body 480 in the bulging state shown in FIGS. 4A and 4B can be broken by cleaving the cleavable line 489. Due to the breakage, the internal gas 86 is released, and the identification body 480 enters a contracted state.

  FIG. 4C shows an absorbent article 400 having an identification body 480 in which the cleavable line 489 shown in FIG. 4D shows a cross-sectional view taken along line VV in FIG. 4C. As shown in FIGS. 4C and 4D, the outer sheet 21 and the inner sheet 22 are both cleaved by the cleavage of the cleavable line 489. Further, since the cleavable line 489 is formed up to a position close to or reaching the bag-shaped half piece 484, not only the portion where the cleavable line 489 is formed but also the extension of the cleavable line 489. It can be cleaved to a portion on the line, that is, a position beyond the bonding surface 484a of the bag-like half 484. As a result, the outer sheet 21 forming a part of the identification body 480 is broken, so that the gas 86 enclosed inside is released, and the identification body 480 is contracted.

  In the form shown in FIGS. 4A and 4B, the cleavable line 489 is formed as a perforation. In this embodiment, the perforation is an assembly of holes or slits that are intermittently formed on the line and penetrate the outer sheet 21 and the inner sheet 22. However, this perforation does not have to be a perforation provided in the outer sheet 21 and the inner sheet 22, and may be provided in at least the outer sheet 21. Further, the cleavable line 489 may be a groove that is not penetrated by the outer sheet 21, for example, a groove that is recessed from the outer surface side or the skin facing surface side of the outer sheet 21. Alternatively, the outer sheet 21 or both the outer sheet 21 and the inner sheet 22 are cut at a position where the cleavable line 489 is to be formed, and both edges formed by the cutting are bonded with a normal human force. It can also be bonded with a releasable bonding means.

  The cleavable line 489 may extend from the end of the absorbent article 400 to within the range of the adhesive surface 484a. However, when the cleavable line 489 is a perforation (at least when the outer sheet 21 penetrates), it is preferable not to extend beyond the adhesive surface 484a. In the case of this embodiment in which the identification body 480 is composed of the outer sheet 21 and the bag-like half 484, the encapsulated gas 86 may be released from the perforation before the tearable line 489 is cleaved. Because there is.

  A plurality of cleavable lines 489 may be provided. If any one of the plurality of cleavable lines 489 is cleaved, the gas in the identification body 480 can be released, so that the complexity of searching for the cleavable lines 489 in a dark environment can be reduced. Moreover, it can also be made cleavable from the arbitrary positions of the edge of the absorbent article 400. For example, the same effect can be obtained by providing a configuration such as Magic Cut (registered trademark). Furthermore, if it is the structure which can discharge | release the gas 86 in the identification body 480 by fracture | rupturing at least the outer side sheet | seat 21, it is not necessarily necessary to form the line of the tearable line 489. For example, a portion having a predetermined area that can be broken by pulling with a normal force of a person can be formed in the outer sheet 21.

  The configuration in which the discriminating body is in a contracted state by crushing as described in the form of FIGS. 1 to 3 is relatively simple in the operation to make the discriminating state. It is preferable at the point which can do. However, since the crushing is a simple operation, there is a possibility that the identification body is unintentionally contracted when the hand is accidentally put on the absorbent article. On the other hand, the absorbent article 400 shown in FIGS. 4A to 4D is configured so that the gas of the identification body 480 is released by the cleavage of the cleavable line 489 and is configured to be hard to be crushed. The possibility of releasing the gas in the identification body 480 can be reduced.

  It should be noted that a weak portion similar to the weak portion 388 described in the absorbent article 300 (FIGS. 3A and 3B) may be formed on the identification body 480 in the absorbent article 400 shown in FIGS. 4A to 4D. . For example, a fragile portion can be formed in the bag-shaped half 484 of the identification body 480. When the fragile portion formed in the bag-shaped half piece 484 is a linear fragile portion extending in the front-rear direction D1 in plan view, the bag-shaped half piece 484 is cut along the cleavable line 489 along with the cleavable line 489. It can be broken along the extending direction. Thereby, the identification body 480 is further easily broken, and the identification body 480 can be changed to the contracted state with a smaller force.

  FIG. 5A shows a partial plan view of an absorbent article 500 according to another embodiment of the present invention as seen from the outer surface. 5B shows a cross-sectional view taken along the line VI-VI in FIG. 5A.

  The basic configuration of the absorbent article 500 is the same as that of the absorbent article 200 (FIGS. 2A and 2B). That is, the gas 86 is sealed in the space formed by the outer sheet 21 and the bag-shaped half piece 584 bonded to the outer sheet 21 at the bonding surface 584a. However, the absorbent article 500 differs from the absorbent article 200 in that an inverted box pleat 585 is formed on the outer sheet 21. The inverted box cage 585 refers to a cage structure in which two cages are abutted on the outer surface side (outer sheet 21 side). When viewed from the skin facing surface side, it corresponds to a box bowl, and in this specification, the inverted box bowl 585 may be simply referred to as a box bowl.

  5A and 5B show the bulging state of the identification body 580. FIG. In this state, the bag-shaped half piece 585 is adhered to the inverted box bag 585 formed on the outer sheet 21 by the bonding surface 584a at the periphery thereof, and the gas 86 is formed in the space formed by the outer sheet 21 and the sheet 585. Is enclosed. In order to make the identification body 580 have a hermetically sealed structure, it is preferable that the edges of two butted ridges in the inverted box ridge 585 are bonded to be airtight. In this case, it is preferable that the edge of the heel can be released with a normal human force.

  Note that it is preferable that the identification body 680 is made of a sealed bag-like body as shown in FIGS. 1A to 1C, because the airtightness of the identification body 680 can be kept good. In that case, since it is not necessary to adhere | attach the edge part of the butt | matching face | butt of the reverse box heel 585 formed in the outer side sheet | seat 21, a manufacturing process can be reduced.

  The bulging state of the identification body 580 shown in FIGS. 5A and 5B can be changed to a contracted state by unfolding the reverse box ridge 585 formed on the outer sheet 21. The reverse box basket 585 can be developed by, for example, pulling both sides of the front end of the absorbent article 500 outward in the width direction D2. At this time, the direction of pulling both side portions may be a direction along the width direction D2 as indicated by an arrow P, or may be obliquely rearward. As will be described later, the reverse box cage 585 is configured to open in a fan shape, so that the reverse box cage 585 is easy to unfold when pulled diagonally backward.

  FIG. 5C shows a partial plan view of the absorbent article 500 in a state (shrinked state) after the reverse box basket 585 is opened, as viewed from the outer surface. 5D shows a cross-sectional view taken along the line VI-VI in FIG. 5C. In the contracted state, the bonding between the edges of the two ridges is released, and the identification body 480 is broken. As a result, the sealed gas 86 is released from the furrow. In addition, when the reverse box basket 585 is opened and the two baskets move to the outside in the width direction D2, the bag-shaped half piece 584 adhered to the outer sheet 21 is also moved to the outside in the width direction D2. Moving. At that time, the bag-shaped half piece 584 can be broken along the front-rear direction D1, as shown in FIG. 5C.

  As shown in FIG. 5C, the reverse box 585 is opened in a fan shape. That is, the box box 585 is open in the area where the identification body 580 is formed, and the reverse box box 585 is not open in the area adjacent to the identification body 580 rearward. This configuration can be obtained by adhering the butted ridges of the reverse box ridge 585 behind the identification body 580 so that it cannot be unbonded by a normal human force. Thereby, when the reverse box basket 585 is opened, it can prevent that the center area | region M of the absorbent article 500 is distorted or damaged. The region where the reverse box basket 585 is adhered so that it cannot be unfolded is the rear region from the rear end of the bag-shaped half piece 584, or the rear region from a position about 1 to 10 mm away from the rear end of the bag-shaped half piece 584. Is preferred.

  Although the fragile portion may or may not be provided on the bag-shaped half piece 584 of the identification body 580, it is preferable to form the fragile portion 588 as shown in FIGS. 5A to 5D. As the weak part 588, the thing similar to the weak part 288 demonstrated in the absorbent article 300 (FIG. 3A and 3B) can be used. As shown in FIG. 5C, the edge portion of the reverse box rod 588 extends along the front-rear direction D1 and the outer sheet 21 of the identification body 580 breaks along the front-rear direction D1. It is preferable that it is linear extending along the front-rear direction D1, and it is more preferable that it is formed along the edge portion on the edge portion of the reed box reed 588 in a plan view. By adopting the configuration having the fragile portion 588, both the outer sheet 21 and the bag-shaped half piece 584 can be broken with a relatively small force when the inverted box cage 585 is opened (FIGS. 5C and 5D). That is, the gas 86 can be released from the identification body 580 with a relatively small force, and the identification body 580 can be changed from the bulged state to the contracted state.

  As described above, the direction in which both side portions are pulled when opening the inverted box cage 585 may be the direction along the width direction D2 (the direction of the arrow P), or may be obliquely rearward. In this case, it is only necessary that the force in the direction of pulling the side portion includes an outward component along the width direction D2. In the present specification, if the pulling force includes an outward component along the width direction D2, the pulling force may be generally pulled outward in the width direction D2 or in the width direction D2. In this way, the reverse box cage 585 is formed to be deployable by being pulled outward in the width direction D2.

  When the absorbent article is mounted, the wearer or the wearer usually performs an operation of stretching the wrinkles in the end region in order to reduce discomfort and leakage in the end region. Specifically, the both ends of the edge region in the width direction outside the edge region are held with both hands, respectively, and the operation of pulling outward in the width direction D2 is performed. As described above, the reverse box cage 585 is configured to be deployable by pulling outward in the width direction D2, so that the wearer or the wearer can remove the reverse box cage 585 by a natural operation during normal wearing. The identification body 580 can be in a contracted state. In addition, the reverse box cage | basket 585 can also be set as the structure expand | deployed by pulling in the front-back direction D1.

  As shown in FIG. 5B and FIG. 5D, in the absorbent article 500, at the front end, at least in the region where the bag-shaped half piece 584 is bonded or the region where the inverted box basket 585 is formed, the outer sheet It is preferable that 21 and the inner sheet | seat 22 are not bonded together. Moreover, it is preferable that the inner sheet 22 has a cut 522b in a direction along the edge of the reverse box ridge 585 at least in a region where the bag-shaped half piece 584 is bonded. As a result, both the outer sheet 21 and the inner sheet 22 can be pulled outward in the width direction D <b> 2 when both sides of the end are pulled to open the inverted box cage 585. Therefore, the identification body 580 can be changed from the expanded state to the contracted state without causing distortion in the absorbent article 500.

  5C and FIG. 5D can be returned to the original state after the gas sealed in the identification body 580 is released. In other words, after the identification body 580 is in the contracted state, the absorbent article 500 may be mounted in either the opened state or the closed state of the inverted box cage 585.

  FIG. 6A shows a partial plan view of an absorbent article 600 according to another embodiment of the present invention as seen from the outer surface. 6B shows a cross-sectional view taken along line VIII-VIII in FIG. 6A.

  The basic configuration of the absorbent article 600 is the same as that of the absorbent article 200 (FIGS. 2A and 2B). That is, the gas 86 is enclosed in the space formed by the outer sheet 21 and the bag-shaped half piece 684 bonded to the outer sheet 21 with the bonding surface 684a, and the identification body 680 is formed. However, as shown in FIGS. 6A and 6B, the identification body 680 in the absorbent article 600 has an easily peelable adhesive portion 684b. The identification body 680 is divided into a bulging portion 680A and a non-bulging portion 680B with the easily peelable bonding portion 684b as a boundary, and the gas 68 is mainly sealed in the bulging portion 680A. The easily peelable adhesive portion 684a is formed so as to maintain the sealing property of the bulging portion 680A and prevent the gas 68 from flowing into the non-bulging portion 680B in the bulging state.

  6A and 6B show the bulging state of the identification body 680. FIG. The identification body 680 can be brought into a contracted state by releasing the gas 68 sealed in the bulging portion 680A to the non-bulging portion B from the bulging state. For example, by placing a finger or palm on the bulging portion 680A and applying a force toward the outer sheet 21, the easily peelable adhesive portion 638a is peeled at least partially by the pressure of the gas 68. Then, the gas 68 is caused to flow into the non-bulged portion B. At this time, the gas 68 is not released to the outside of the absorbent article (for example, inside the room).

  FIG. 6C shows a diagram after the bulging state identification body 680 shown in FIG. 6B has changed to a contracted state. In this contracted state, the thickness of the bulging portion 680A and the non-bulging portion 680B is substantially uniform. The thickness of the bulging portion 680A and the non-bulging portion 680B in the contracted state is compressed during wearing by appropriately selecting the size of the bag-like half piece 684, the size of the bulging portion 680A and the non-bulging portion 680B, etc. Even if it is done, it can be set as small thickness as not to be worried about.

  In such a configuration, since the identification body 680 is not broken, it is possible to prevent the broken portion from being caught on a finger, a clothing part, or the like during or after wearing. In addition, since a small bulge is left even in the contracted state, the identifier 680 is used for identifying the orientation of the absorbent article 600 in a dark environment even after the identifier 680 is accidentally set in the contracted state. be able to.

  As mentioned above, although the pad type disposable diaper was demonstrated as an example about the form of this invention, this form can be used suitably also with disposable diapers, such as a tape type and a pants type, and a sanitary napkin.

21 Outer sheet 22 Inner sheet 30 Absorber 80, 280, 380, 480, 580, 680 Identification body 680A Inflated portion 680B Non-inflated portion 82, 382 Bag-like body 82a, 382a Adhesive surface 84, 184, 284, 484, 584, 684 Bag-shaped half pieces 84a, 184a, 484a, 584a, 684a Adhesive surface 684b Easy peel adhesive parts 100, 200, 300, 400, 500, 600 Absorbent articles 388, 588 Fragile parts 489 Cleavageable line 522b Notch 585 Reverse box襞 C Crotch area D1 Front-back direction (first direction)
D2 width direction (second direction)
F Front end region M Center region R Rear end region

Claims (8)

A substantially planar absorbent article comprising a liquid-permeable inner sheet, a liquid-impermeable outer sheet, and an absorbent body provided between the inner sheet and the outer sheet,
At least one of the front and rear end regions, on the outer sheet side, provided with an identification body that can be identified by tactile sense,
The said identification body is an absorptive article comprised so that it may become a contracted state by the said gas being discharge | released from the bulging state in which the gas was enclosed.   The absorptive article according to claim 1 in which said discernment object has a weak part.   The absorbent article according to claim 1 or 2, wherein the identification body is arranged on the outer sheet and is configured to be in the contracted state by breaking the outer sheet. The outer sheet has a tearable line;
The absorbent article according to claim 3, wherein the identification body is disposed on the cleavable line or an extension line of the cleavable line and is brought into the contracted state by the cleavage of the cleavable line. In the outer sheet, a reverse box ridge formed by a butt being abutted is formed,
The absorptive article according to claim 1 or 2 by which said discernment object is arranged on an edge of said ridge, and will be in said contraction state by opening said reverse box ridge.   The absorptive article according to claim 5 in which said discernment will be in said contraction state by pulling in the width direction orthogonal to the direction of order.   The absorbent article according to any one of claims 1 to 6, wherein the identification body is a sealed bag-like body bonded to the outer sheet.   The absorption according to any one of claims 1 to 6, wherein the identification body is formed by sealing the gas in a space formed by the outer sheet and a bag-shaped half piece bonded to the outer sheet. Sex goods.

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