JP2014008179A - Absorbent article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify wearing by making it hard for winkles or twists to form when folding wing-like flaps back and to prevent the body from feeling discomfort by firmly fixing the wing-like flaps to an underwear and preventing leakage.SOLUTION: Wing-like flaps W have front side outlines 10 for demarcating front sides of the wing-like flaps W and back side outlines 11 for demarcating back sides of the wing-like flaps W. Base end parts 14 of the back side outlines 11, a back side base end width B to be a separation width between 14 are formed wider than base end parts 13 of the front side outlines 10, a front base end width A to be a separating width between 13. Thus, lines (wing base end lines WL) connecting the base end parts 13 of the front side outlines 10 and the base end parts 14 of the back side outlines 11 almost match folding lines RL when folding the wing-like flaps W back, so that wrinkles or twists are unlikely to form.

Description

  The present invention relates to absorbent articles such as sanitary napkins, panty liners, and incontinence pads for absorbing menstrual blood and vaginal discharge, and more specifically, used to wrap around the crotch portion of underwear when fixed to underwear. The present invention relates to an absorbent article provided with a wing-shaped flap.

  Conventionally, as an absorbent article N such as a sanitary napkin, a panty liner, a cage sheet, an incontinence pad, for example, as shown in FIG. 10, a liquid-impermeable back sheet 50 made of a polyethylene sheet or a polyethylene laminated nonwoven fabric, for example. And an absorbent body 52 made of cotton-like pulp or the like is known between a non-woven fabric or a liquid-permeable surface sheet 51 made of a porous plastic sheet.

  As this type of absorbent article N, in order to prevent misalignment in the mounted state, for example, one or a plurality of adhesive layers 53, 53 are formed on the non-skin contact surface side (outer surface), and the napkin body The wing-shaped flaps W, W extending outward are integrally formed on both sides in the longitudinal direction of the wing, and the wing-shaped flaps W, W are adhered to a surface (outer surface) on the liquid-impervious back sheet 50 side. There is one in which the agent layers 54 are provided.

  In order to fix the absorbent article N to the undergarment, as shown in FIG. 11, the absorbent article N is applied to a locally corresponding portion of the undergarment, and the wing-shaped flaps W, W protruding laterally are removed from the undergarment. The two wing-shaped flaps W, W are folded back at the base end and adhered to the outer surface of the crotch portion of the underwear while the crotch portion of the underwear is wound around, and then the underwear is worn on the body.

  In the absorbent article N, the wing flap W has a front outline 55 that defines the front side of the wing flap W and a rear outline 56 that defines the rear side of the wing flap W. The separation width A between the base end portions 57 and 57 of the front outer shape line 55 and the separation width B between the base end portions 58 and 58 of the rear outer shape line 56 are formed substantially equal. In such a wing-shaped flap W, the fold line RL is originally folded so that the fold line RL is formed at a line connecting the base end portion 57 of the front outer shape line 55 and the base end portion 58 of the rear outer shape line 56. The flaps are less likely to wrinkle or twist and can be firmly fixed to the underwear.

  In recent years, it has been proposed that the flap portion is less likely to be wrinkled or twisted. For example, in Patent Document 1 below, the rear flap portion has a maximum half-width dimension from the center in the longitudinal direction in front of the midpoint of the length in the longitudinal direction from the projecting start point projecting on both sides in the lateral direction to the rear edge. A sanitary napkin is disclosed. Moreover, in the following patent document 2, the sheet | seat which comprises a back flap part repeats a collar part and a trough part alternately toward the vertical direction, and the top part of a collar part and the bottom part of a trough part extend in a horizontal direction. A sanitary napkin provided with a wave-like deformed portion and a strip-like or linear non-deformed portion extending in the longitudinal direction across the ridge and valley is disclosed.

JP 2009-559 A JP 2006-20893 A

  However, in both of Patent Documents 1 and 2 described above, wrinkles and creases are less likely to occur by making the rear flap part follow the movement of the body in a worn state. Wrinkles and twists that occur when folding back the wing-shaped flap of the time are not taken into consideration.

  That is, when the wing-shaped flap is folded from the state in which the absorbent article is fixed to the undergarment while the crotch portion of the undergarment is rolled up, the front portion of the tip of the wing-shaped flap is handled by hand because the folding work is performed in front of the body. However, at this time, in the conventional absorbent article in which the front base end width A and the rear base end width B are formed substantially equal, regular folding is performed. The folding line RL is not easily formed at the position (on the line connecting the base end portion 57 of the front side outline 55 and the base end portion 58 of the rear side outline 56), and the wing-shaped flap W or the flap portion of the main body portion is wrinkled or twisted. It was easy to occur.

  Specifically, from the state in which the wing-shaped flap W protrudes outward, the front side portion of the wing-shaped flap W is picked by hand and folded while pulling diagonally forward on the outer side in the width direction. Rotate the wing-shaped flap W to the other side, but at this time, due to the structure of the human body, if you twist your wrist while picking something at your hand, your hand will move to the back (your body side) To come. Therefore, in a state where the wing-shaped flap W is folded, the front side portion of the wing-shaped flap W moves to the rear side of the absorbent article in conjunction with the movement of the hand. For this reason, the folding line RL gradually progressing from the base end portion 57 of the front side outline 55 comes to incline outward from the normal folding position (see FIG. 3A), particularly the rear side. Wrinkles and twists were likely to occur in the area. As a result, problems such as difficulty in wearing work, inadequate fixation to the underwear, slippage and leakage, and a sense of incongruity due to wrinkles and twists occurred.

  Therefore, the main problem of the present invention is that when the wing-shaped flap is folded back, wrinkles and creases are less likely to occur, the wearing work can be easily performed, and it can be firmly fixed to the underwear, preventing leakage and not causing the body to feel uncomfortable. It is to provide an absorbent article.

In order to solve the above-mentioned problem, as the present invention according to claim 1, an absorber is interposed between the liquid-permeable top sheet and the back sheet, and the crotch portions of the underwear are respectively wound on both sides when being mounted. In an absorbent article formed with a wing-shaped flap that is fixed by
The wing-shaped flap has a front outline defining the front side of the wing-shaped flap and a rear outline defining the rear side of the wing-shaped flap, and the base ends of the rear outline are An absorptive article characterized in that a rear base end width, which is a separation width, is formed wider than a front base end width, which is a separation width between base end portions of the front outline, is provided.

  In the first aspect of the present invention, the rear base end width, which is the separation width between the rear end contours of the wing-shaped flap, is the separation width between the base ends of the front outer contour line of the wing-shaped flap. It is formed wider than a certain front base end width. That is, a line connecting the base end portion of the front outer shape line and the base end portion of the rear outer shape line is formed to be inclined outward from the front side toward the rear side. Since the direction of the line connecting the front and rear base ends is almost the same as the direction of the fold line when the front part of the wing-shaped flap tip is picked by hand and folded while twisting the wrist, Folding lines are easily formed on the line connecting the base ends of the wings (see Fig. 3 (B)), and wing-like flaps and surrounding flaps are less likely to be wrinkled or twisted. It can be firmly fixed to the body, leakage can be prevented, and the body does not feel strange.

  As this invention which concerns on Claim 2, the longitudinal direction line | wire of the absorbent article which passes along the base end part of the said front side outline, The line which passes along the base end part of the said front side outline, and the base end part of the said back side outline, The absorbent article according to claim 1, wherein the angle formed by is 5 ° to 30 °.

  The invention according to claim 2 is defined from a different point of view that the fold line of the wing-shaped flap is formed to be inclined outward from the front side toward the rear side. The angle formed by the longitudinal line of the absorbent article passing through and the line (fold line) passing through the base end of the front outline and the base end of the rear outline is defined as 5 ° to 30 °. It is.

  The present invention according to claim 3 provides the absorbent article according to any one of claims 1 and 2, wherein the difference between the rear base end width and the front base end width is 5 mm to 55 mm.

  The invention described in claim 3 further defines the point that the fold line of the wing-shaped flap is formed to be inclined outward from the front side toward the rear side. The rear base end and the front side are defined. The difference from the base end width is defined as 5 mm to 55 mm.

  According to a fourth aspect of the present invention, any one of the first to third aspects, wherein embossing along the line is provided on the outer side of the line passing through the base end portion of the front side outline and the base end portion of the rear side outline. An absorbent article as described above is provided.

  In the invention described in claim 4, the wing-shaped flap is provided by providing embossing along the line outside the line (folding line) passing through the base end of the front outline and the base end of the rear outline. Is easy to bend along the inside of the emboss, so that wrinkles and twists are less likely to occur when folded.

  As a fifth aspect of the present invention, a sheet material is laminated on the wing-shaped flap extending outward from a line passing through a base end portion of the front side outline and a base end portion of the rear side outline. Item 5. An absorbent article according to any one of Items 1 to 4 is provided.

  In the invention of claim 5, the sheet material is laminated on a wing-shaped flap that extends outward from a line (fold line) passing through the base end portion of the front side outline and the base end portion of the rear side outline. The wing-shaped flap is easily folded back along the inner edge of the reinforcing sheet material, and the wing-shaped flap itself is less likely to be wrinkled or twisted because it is reinforced by the sheet material. In addition, as said sheet | seat material, a nonwoven fabric, a film, etc. can be used, for example.

  According to a sixth aspect of the present invention, the absorbent body is substantially aligned with a line passing through a base end portion of the front outer shape line and a base end portion of the rear outer shape line at least in a region overlapping with the wing-shaped flap. The absorbent article according to any one of claims 1 to 5, wherein the rear width dimension is formed wider than the front width dimension so as to be parallel to each other.

  In the invention according to claim 6, the width of the absorber is formed so that the rear side is wider than the front side in accordance with the inclined folding line. Thereby, the flap part of the rear side base end part of a wing-like flap can be narrowed, and it becomes difficult to produce a wrinkle and a twist.

  As the present invention according to claim 7, there is provided the absorbent article according to any one of claims 1 to 6, wherein the wing-shaped flap is provided with an emboss over substantially the entire area of the rear half or less.

  In the seventh aspect of the present invention, embossing is provided over almost the entire area of the rear half of the wing-shaped flap, so that this region is firm, and wrinkles and twists are less likely to occur.

  As the present invention according to claim 8, there is provided the absorbent article according to any one of claims 1 to 7, wherein embossing is provided on both side portions on the rear side of the wing-shaped flap.

  In the invention according to claim 8, by embossing each of the both side portions on the rear side of the wing-shaped flap, the flap portion not including the absorber is particularly stiff so that wrinkles and twists are less likely to occur. .

  As described above in detail, according to the present invention, there is provided an absorbent article that is less likely to be wrinkled or twisted when folded back as a wing-shaped flap, can be easily attached, and can be firmly fixed to underwear, and does not feel uncomfortable to the body. Can be provided.

It is a partial fracture development view of sanitary napkin 1 concerning the present invention. It is the II-II arrow directional view. It is the figure which showed the return | turnback point of the wing-shaped flap W. FIG. It is an expanded view of the sanitary napkin 1 which concerns on a 2nd form example. It is an expanded view of the sanitary napkin 1 which concerns on a 3rd form example. It is the VI-VI line arrow directional view of FIG. It is an expanded view of the sanitary napkin 1 which concerns on a 4th form example. It is an expanded view of the sanitary napkin 1 which concerns on a 5th form example. It is an expanded view of the sanitary napkin 1 which concerns on a 6th form example. It is an expanded view of the conventional sanitary napkin N. FIG.

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

[First embodiment]
As shown in FIGS. 1 and 2, the sanitary napkin 1 according to the present invention has a liquid-impervious back sheet 2 made of a polyethylene sheet, a polypropylene sheet, or the like, and a permeate that quickly permeates menstrual blood or a cage. The liquid surface sheet 3, the absorbent body 4 made of cotton-like pulp or synthetic pulp interposed between the two sheets 2 and 3, and the absorbent body 4 for maintaining the shape of the absorbent body 4 and improving the diffusibility. Crepe paper 5 and side nonwoven fabrics 7 and 7 disposed on both sides of the surface along the longitudinal direction. Around the absorbent body 4, at the front and rear edge portions in the napkin longitudinal direction, the outer edge portion of the liquid-impermeable back sheet 2 and the liquid-permeable surface sheet 3 is formed of an adhesive such as hot melt, heat seal, or the like. The liquid-impervious back sheet 2 and the side nonwoven fabric 7 which are joined by an adhesive means and extend laterally from the edge of the absorbent body 4 at both side edges thereof are adhesives such as hot melt or heat. The outer periphery flap part which the absorber 4 does not exist is formed on the outer periphery by bonding means such as a seal, and the sheet material on the front side and the back side is bonded at an appropriate position of the peripheral part.

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

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

  The absorbent body 4 interposed between the liquid-impermeable back sheet 2 and the top sheet 3 is, for example, a mixture of a highly water-absorbent resin in pulp, or a mixture of chemical fibers in the pulp and a high water absorption. A material mixed with a conductive resin is used. As shown in the figure, it is desirable that the absorbent body 4 is surrounded by crepe paper 5 in order to maintain its shape and quickly diffuse menstrual blood and prevent reverse return of menstrual blood once absorbed. Examples of the pulp include chemical fibers obtained from wood, cellulose fibers such as molten pulp, and artificial cellulose fibers such as rayon and acetate. Softwood pulp having a longer fiber length than hardwood pulp functions and It is preferably used in terms of price.

  The absorbent body 4 may be mixed with synthetic fibers. As the synthetic fiber, for example, polyolefins such as polyethylene or polypropylene, polyesters such as polyethylene terephthalate and polybutylene terephthalate, polyamides such as nylon, and copolymers thereof can be used. It may be a mixture. In addition, a composite fiber such as a core-sheath fiber, a side-by-side fiber, or a split fiber having a fiber having a high melting point as a core and a fiber having a low melting point as a sheath can also be used. In the case of a hydrophobic fiber, it is desirable to use a synthetic fiber that has been surface-treated with a hydrophilizing agent so as to have an affinity for body fluids.

  Examples of the superabsorbent resin include cross-linked polyacrylate, self-crosslinked polyacrylate, saponified acrylate-vinyl acetate copolymer cross-linked, isobutylene / maleic anhydride copolymer cross-linked, Examples include cross-linked polysulfonates, and partially cross-linked water-swellable polymers such as polyethylene oxide and polyacrylamide. Among these, those based on acrylic acid or acrylate that are excellent in water absorption and water absorption speed are preferred. In the production process of the highly water-absorbent resin having the water absorption performance, the water absorption force and the water absorption speed can be adjusted by adjusting the crosslinking density and the crosslinking density gradient. The content of the highly water-absorbent resin is desirably 10 to 60% of the weight of the absorber. When the content of the superabsorbent resin is less than 10%, sufficient absorbability cannot be provided, and when it exceeds 60%, the entanglement between the pulp fibers disappears, the sheet strength decreases, and tears, cracks, etc. Is likely to occur.

The absorbent body 4 may be an absorbent layer mainly composed of a defibrated pulp obtained by defibrating a pulp raw material by a drum stacking machine or the like. However, in order to improve the feeling of wearing due to the thinness and to give a firmness Further, a thin laminated pulp obtained by compressing the piled pulp may be used, or a so-called air laid pulp in which pulp fibers are processed into a sheet shape by an air laid method in advance in order to improve the feeling of wearing due to the thinness. The thin laminated fiber or air laid pulp is preferably processed into a sheet having a thickness of 0.8 to 3 mm. Moreover, it is also possible to mix a superabsorbent resin into a pulp fiber, and the blend ratio is preferably 10 to ²⁰⁰ g / m ² of pulp fiber and 0 to 100 g / m ² of superabsorbent resin.

  When the crepe paper 5 surrounding the absorbent body 4 is provided as in this example, the crepe paper 5 is interposed between the liquid-permeable surface sheet 3 and the absorbent body 4 as a result. The crepe paper 5 which is excellent in diffusing body fluids quickly prevents reversal of menstrual blood and the like.

  On the other hand, side non-woven fabrics 7 and 7 are provided on both sides of the sanitary napkin 1 along the longitudinal direction and almost the entire length of the napkin 1, respectively. Wing-like flaps W and W are formed by a part of the liquid-impervious back sheet 2 that extends laterally and also laterally.

  As the side nonwoven fabric 7, a water-repellent treated nonwoven fabric or a hydrophilic treated nonwoven fabric can be used from the viewpoint of an important function. For example, if importance is placed on functions such as preventing permeation of menstrual blood or vaginal discharge, or enhancing the touch feeling, water repellent treatment coated with silicon, paraffin or alkylchromic chloride water repellent It is desirable to use a nonwoven fabric. Further, if importance is attached to the absorption of menstrual blood and the like in the wing-shaped flaps W, W, a method of polymerizing a compound having a hydrophilic group, for example, an oxidation product of polyethylene glycol, in the process of producing a synthetic fiber, , By treating with a metal salt such as stannic chloride, partially dissolving the surface to make it porous, and depositing metal hydroxides to swell or make the synthetic fiber porous, applying capillary action to make it hydrophilic It is desirable to use a hydrophilic treated non-woven fabric provided with.

  Next, the wing-shaped flap W will be described in detail. The wing-shaped flap W defines a front side of the wing-shaped flap W, defines a front outline 10 extending outward from the main body portion, and a rear side of the wing-shaped flap W, and extends outward from the main body portion. And an outer shape composed of a front outer shape line 12 connecting the front outer shape line 10 and the rear outer shape line 11. In the sanitary napkin 1, the rear base width B, which is the separation width between the base ends 14, 14 of the rear outline 11, is the separation width between the base ends 13, 13 of the front outline 10. Is wider than the front base end width A (that is, A <B). That is, a line connecting the base end portion 13 of the front side outline 10 and the base end portion 14 of the back side outline 11 (hereinafter also referred to as a wing base end line WL) is inclined outward from the front side toward the rear side. It is formed as follows.

  Here, the “proximal end portion 13 of the front outline 10” and the “proximal end portion 14 of the rear outline 11” are the base end portions where the wing-shaped flaps W start to extend outward from the main body portion, respectively. In general, this is a portion where the width dimension of the main body portion extending forward and rearward from the base portion of the wing-shaped flap W is minimized. The sanitary napkin 1 is configured such that the wing base end line WL substantially coincides with a fold line RL when the wing-shaped flap W is folded back.

  By forming the product width of the base end portion of the wing-shaped flap W with the above-described relationship (A <B), the wing-shaped flap W can be easily and properly folded without causing wrinkles or twists. Advantages such as being able to be folded can be brought about. This point will be further described in detail by comparison with a conventional wing-shaped flap W (see FIG. 10) having substantially the same front base end width A and rear base end width B.

  First, when the sanitary napkin 1 is attached to the shorts while the woman is sitting on a toilet bowl or the like, the operation is performed in a state where the shorts are lowered and the napkin 1 is attached in front of the body. For this reason, in the folding operation, as shown in FIG. 3, the front side portion T at the tip of the wing-shaped flap W is picked and pulled toward the diagonally forward side in the width direction. At this time, with the front side portion T of the wing-shaped flap being picked, if the wrist is twisted (rotated) and the wing-shaped flap is folded back, the wrist will be twisted while picking at the fingertip due to the structure of the human body. The movement that the hand moves to the back side of the napkin (your body side) is added. By such an action of the hand moving to the rear side of the napkin, a fold line RL gradually progressing from the base end portion of the front outline is easily formed in a direction in which the rear side is inclined outward.

  Here, in the case of the conventional wing-shaped flap W, as shown in FIG. 3 (A), the front base end width A and the rear base end width B of the wing-shaped flap W are substantially equal. A line connecting the front side and the rear side of the base end portion of the shaped flap W (wing base end line WL) is formed substantially along the longitudinal direction of the sanitary napkin. However, as described above, the fold line RL of the wing-shaped flap W is formed in a direction tilting outward toward the rear side, so that the wing base line WL and the fold line RL do not coincide with each other. Wrinkles and twists were likely to occur on the side. Further, since the crotch portion of the shorts is formed so that the curve toward the rear side is relatively wider than the curve toward the front side, the folding line RL of the wing-shaped flap W is the same as that of the wing-shaped flap W. In many cases, the rear side is located closer to the outer side than the front side, and the folding line RL is generally formed to be inclined outward toward the rear side as a whole.

  Therefore, in the present invention, as described above, by forming the base end portion of the wing-shaped flap W in the relationship of the front base end width A <the rear base end width B, as shown in FIG. Even when the front side portion T of the wing-shaped flap W is picked and folded back while pulling diagonally forward on the outer side in the width direction, the wing base line WL and the fold line RL are substantially coincident with each other. In addition, wrinkles and twists are less likely to occur on the outer peripheral flap of the main body.

  Also, as shown in FIG. 1, when the sanitary napkin 1 is attached, the vicinity of the front base end width A is located at the inner portion of the base of the leg. In conventional sanitary napkins, the front base width and the rear base width are almost the same, so both sides of the front base width are in contact with the inside of the base of the leg, making it feel strange when worn. However, since the sanitary napkin 1 is formed so that the front base end width A <the rear base end width B, both side edges near the front base end width A are in contact with the inside of the base of the leg. This will reduce the sense of discomfort.

  In the above-described relationship of A <B, the longitudinal direction line S of the sanitary napkin 1 passing through the proximal end portion 13 of the front outline 10, the proximal end portion 13 of the front outline 10, and the rear outline 11 The angle α formed with the line WL (folding line RL) passing through the base end portion 14 is 5 ° to 30 °, preferably 5 ° to 10 °. This angle range corresponds to the angle of the curve of the crotch part of a general shorts, and by forming in this angle range, it becomes possible to fold the wing-shaped flap W along the outer shape of the crotch part of the shorts, Wrinkles and twists are less likely to occur at the base of the wing-shaped flap W.

  The front base end width A is 70 ≦ A ≦ 85 mm, preferably about 80 ≦ A ≦ 85 mm, and the rear base end width B is 90 ≦ B ≦ 125 mm, preferably 95 ≦ B ≦ 125 mm. That is, the difference between the rear base end width B and the front base end width A is preferably about 5 mm to 55 mm.

  As shown in FIG. 1, the outline of the main body portion on the front side of the base end portion 13 of the front side outline 10 of the wing-shaped flap W has an angle θ with respect to a width direction line drawn from the base end portion 13 of 60 ≦ θ ≦ 90 °, preferably 75 ≦ θ ≦ 90 °. Thereby, the front side portion of the wing-shaped flap W can be easily folded back at the base end portion 13 of the front side outline 10 without deteriorating the uncomfortable feeling at the base portion of the leg.

  The planar shape of the wing-shaped flap W is a trapezoidal shape in the illustrated example, but the front-side outline 10 and the rear-end outline 11 are connected in a curved line with almost no tip-side outline 12. It is good also as a shape. In the illustrated example, the front end side outline 12 is formed so as to be substantially along the longitudinal direction of the napkin, and the length of the rear side outline 11 is made shorter than the length of the front side outline 10. It may be formed substantially parallel to the wing base line WL, and the lengths of the front outline 10 and the rear outline 11 may be substantially equal.

[Second embodiment]
In the sanitary napkin 1 according to the second embodiment, as shown in FIG. 4, on the outside of the line passing through the proximal end portion 13 of the front outer contour line 10 and the proximal end portion 14 of the rear outer contour line 11, The embossing 20 along is provided. Thus, the wing-shaped flap W is easily folded back with the inside of the emboss 20 as the fold line RL, and the fold line RL is easily formed at a normal position. Therefore, wrinkles and twists are less likely to occur, and the mounting operation is facilitated.

  Although the emboss 20 is formed in a continuous line shape in the illustrated example, it may be formed in an intermittent line shape such as a dotted line shape or a dot shape, or by arranging figures or symbols discretely or continuously. It may be formed. The emboss 20 is preferably formed so that the inner edge of the emboss groove in the napkin width direction substantially coincides with a line passing through the base end portion 13 of the front outer shape line 10 and the base end portion 14 of the rear outer shape line 11.

[Third embodiment]
In the sanitary napkin 1 according to the third embodiment, as shown in FIGS. 5 and 6, a line (a wing base end) passing through the base end portion 13 of the front side outline 10 and the base end portion 14 of the rear side outline 11. A separate sheet material 21 is laminated on a wing-shaped flap W extending outward from the line WL). The wing-shaped flap W is reinforced by the sheet material 21, and the wing-shaped flap W can be easily folded at the regular folding position along the inner edge of the sheet material 21.

  The sheet material 21 is configured such that when the wing-shaped flap W is folded back to the back sheet 2 side, the constituent members are easily bent with the inner edge of the sheet material 21 as a base point. Therefore, as shown in FIG. And the liquid-impervious back sheet 2 are bonded to the side non-woven fabric 7 and the liquid-impervious back sheet 2 respectively. It is preferable to use either one of the adhesive back sheet 2 and the adhesive back sheet 2.

  As the sheet material 21, various materials such as a nonwoven fabric, a film, and paper can be used, but in order to exert an effect for reinforcing the wing-shaped flap W, it is preferable to use a strong material such as a film. .

  The sheet material 21 is disposed so that the inner edge is positioned in the vicinity of the outer side in the napkin width direction of the line passing through the proximal end portion 13 of the front outer contour line 10 and the proximal end portion 14 of the rear outer contour line 11. On the other hand, the outer side is formed along the outline of the wing-shaped flap W in the illustrated example.

[Fourth embodiment]
In the sanitary napkin 1 according to the fourth embodiment, as shown in FIG. 7, as the absorbent body 4, at least in the region overlapping the wing-shaped flap W and the napkin width direction, A rear side whose width dimension is formed wider than the width dimension of the front side so as to be substantially parallel to a line passing through the base end portion 14 of the rear side outline 11 is used. Thereby, the flap width in which the absorber 4 does not intervene in the front side and the rear side of the wing-shaped flap W becomes substantially equal, and wrinkles and twisting of the flap portion on the rear side are less likely to occur.

[Fifth embodiment]
In the sanitary napkin 1 according to the fifth embodiment, as shown in FIG. 8, the embossing region 22 is provided over almost the entire area of the rear half of the wing-shaped flap W. By providing the embossing area 22, the rear half of the wing-shaped flap W is firm, and wrinkles and twists are less likely to occur. The embossing region 22 has a pattern in which a plurality of linear embosses are arranged along the napkin width direction with an interval in the napkin longitudinal direction, or a plurality of linear embossments are arranged in the napkin width direction with an interval in the napkin width direction. And a pattern in which a plurality of figures and symbol embosses are arranged. In addition, the embossing is provided in the area | region except the perimeter seal embossing part given to the peripheral part of the wing-shaped flap W for joining the liquid-impermeable back sheet 2 and the side nonwoven fabric 7.

[Sixth embodiment]
In the sanitary napkin 1 according to the sixth embodiment, as shown in FIG. 9, embossing regions 23 are provided on both side portions of the main body portion behind the wing-shaped flap W, respectively. By providing the embossing region 23, the stiffness of this region increases, and it becomes difficult for wrinkles and twists in this region when the wing-shaped flap W is folded back. The embossing is desirably applied to at least the outer peripheral flap portion where the absorber 4 is not interposed. Thereby, a firmness can be given to an outer periphery flap part. In addition, the embossing is provided in a region excluding the all-round seal embossed portion provided on the peripheral edge portion of the outer peripheral flap portion for joining the liquid-impermeable back sheet 2 and the side nonwoven fabric 7.

  DESCRIPTION OF SYMBOLS 1 ... Sanitary napkin, 2 ... Liquid impervious back sheet, 3 ... Liquid permeable top sheet, 4 ... Absorber, 5 ... Crepe paper, 7 ... Side nonwoven fabric, 10 ... Front side outline, 11 ... Rear side outline , 12 ... distal end side outline, 13 · 14 ... proximal end, 20 ... embossing, 21 ... sheet material, 22 · 23 ... embossing area

Claims (8)

In the absorbent article in which an absorbent body is interposed between the liquid-permeable top sheet and the back sheet, and wing-like flaps are formed that are fixed to the both sides so that the crotch part of the underwear is wrapped around,
The wing-shaped flap has a front outline defining the front side of the wing-shaped flap and a rear outline defining the rear side of the wing-shaped flap, and the base ends of the rear outline are An absorptive article characterized in that a rear base end width which is a separation width of the front side is formed wider than a front base end width which is a separation width between the base end portions of the front outline.   The angle formed by the longitudinal line of the absorbent article passing through the proximal end portion of the front outline and the line passing through the proximal end portion of the front outline and the proximal end portion of the rear outline is 5 ° to 30 °. The absorptive article according to claim 1 which is °.   The absorbent article according to claim 1, wherein a difference between the rear base end width and the front base end width is 5 mm to 55 mm.   The absorptive article according to any one of claims 1 to 3 by which embossing along this line is given to the outside of the line which passes along the base end part of said front side outline, and the base end part of said back side outline.   The sheet material is laminated | stacked on the said wing-like flap extended outside the line | wire which passes along the base end part of the said front side outline, and the base end part of the said back side outline. Absorbent article.   The absorber has a rear width at least in a region overlapping with the wing-shaped flap in a width direction so as to be substantially parallel to a line passing through a proximal end portion of the front outer contour line and a proximal end portion of the rear outer contour line. The absorbent article in any one of Claims 1-5 currently formed in the dimension wider than the width dimension of the front side.   The absorbent article according to any one of claims 1 to 6, wherein the wing-shaped flap is provided with an emboss over substantially the entire area of the rear half or less.   The absorptive article according to any one of claims 1 to 7 by which embossing is given to both sides of the back side from said wing-like flap, respectively.

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