JP2005329218A - Disposable absorbent article and method of manufacturing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disposable absorbent article capable of preventing leakage of excrement from ends in the longitudinal direction of an absorbent article body. <P>SOLUTION: Flap parts 5 and 5 are formed on outer sides in the longitudinal direction of an absorbent body 4 of the absorbent article body 1, and side flap parts 6 and 6 are formed on outer sides in the cross direction of the absorbent body 4. The absorbent article body is folded back along the center line in the cross direction with a liquid-permeable surface sheet 2 inside, and parts of the flap parts 5 on the front side including the center lines in the cross direction are jointed to each other to form a joint part 11. The leakage of excrement from ends in the longitudinal direction of the absorbent article body 1 can be securely prevented by leakage preventive walls 12 of the joint part 11 which is three-dimensionally formed. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a disposable absorbent article for adults or for incontinence and a method for producing the same.

  In general, pad-type disposable absorbent articles used together with disposable diapers or attached to underwear are provided with an absorbent body having liquid retention between a liquid-permeable top sheet and a liquid-impervious back sheet. A pair of left and right three-dimensional flaps are provided in the vicinity of both side edges in the longitudinal direction of the absorber.

  In this disposable absorbent article, when used together with a disposable diaper or attached to underwear, excrement does not leak from the side in the width direction due to the effect of the three-dimensional flap, but from both ends in the longitudinal direction There is a risk of excretion leaking.

Therefore, in the vicinity of both side edges of the front or rear of the absorbent article main body, a pair of layers that overlap each other with the liquid-permeable surface sheets inside, and that extend in the longitudinal direction inside the both side edges of the absorbent article main body Folded outward in the width direction at the folding line and fixed along the folding line, and an elastic body is disposed in an extended state on one end of the absorbent article body in the longitudinal direction or on both sides of the other end. Forming a male organ housing space or an excrement housing space that stands on one end of the absorbent article main body or the other end of the absorbent article main body, or both side edges and longitudinal ends of the absorbent article main body. The structure which prevents the leakage of excrement from an edge is known (for example, refer to patent documents 1).
JP 2002-345882 (page 3-4, FIG. 1)

  However, in the above-mentioned disposable absorbent article, the leakage prevention walls formed on the left and right of the central part by the left and right absorbent article main bodies forming the male organ accommodation space or the excrement accommodation space and the elastic force of the elastic body, Although leakage of excrement in the width direction of the absorbent article body can be prevented, the end in the longitudinal direction is open, so excrement leaks from this opening when excretion is vigorously excreted. There is a problem of fear.

  This invention is made | formed in view of such a point, and it aims at providing the disposable absorbent article which can prevent the leakage of excrement from the edge part of the longitudinal direction of an absorbent article main body, and its manufacturing method. .

  Moreover, an object of this invention is to provide the manufacturing method of the disposable absorbent article which improved productivity.

  The disposable absorbent article according to claim 1 is a liquid-permeable top sheet, a liquid-impervious back sheet, an absorbent body disposed between the liquid-permeable top sheet and the liquid-impervious back sheet, The absorbent article body has a longitudinal direction and a width direction, and the absorbent article body has flap portions formed on both outer sides in the longitudinal direction of the absorbent body, and the width of the absorbent body. Side flap portions are formed on both outer sides in the direction, and the absorbent article body is folded back along the center line in the width direction with the liquid-permeable surface sheet as the inner side, and at least the width of any one of the flap portions The parts including the center line in the direction are joined together to form a joined part.

  Then, flap portions are formed on both outer sides in the longitudinal direction of the absorbent body of the absorbent article main body having a longitudinal direction and a width direction, side flap portions are respectively formed on both outer sides in the width direction of the absorbent body, The liquid-permeable surface sheet is folded back along the center line, and at least one of the flap parts including the center line in the width direction is joined to each other to form a joint part. Leakage of excrement from the end portion in the longitudinal direction is prevented by the joint portion formed in three dimensions.

  The disposable absorbent article according to claim 2 is the disposable absorbent article according to claim 1, wherein the absorbent article main body includes three-dimensional flaps respectively formed along the longitudinal direction at both side edges in the width direction. The three-dimensional flap has a base end joined to the absorbent article main body, a distal end protruding in a free end shape, and an elastic body disposed on the distal end, and the absorbent article main body at both longitudinal ends. Are respectively joined to the absorbent article main body by being tilted to the center in the width direction, and are joined to each other together with the joint at the end on the joint side.

  And by forming a solid flap along the longitudinal direction at both side edges in the width direction of the absorbent article main body, the solid flap prevents leakage of excrement in the width direction and absorbs the proximal end portion of the solid flap. Bonded to the main body of the absorbent article, the tip is projected in the form of a free end, and an elastic body is provided at the tip, and the two ends of the longitudinal direction are tilted toward the center of the absorbent article body in the width direction to absorb each. By joining to the absorbent article main body and joining each other together with the joint at the end on the joint part side, there is no gap on the joint part side between the absorbent article main body and the three-dimensional flap.

  The disposable absorbent article according to claim 3 is the disposable absorbent article according to claim 1 or 2, wherein the joining portion is a flap portion on one end side in the longitudinal direction of the absorbent article body, and the longitudinal direction of the absorbent article body. From one end side in the direction toward the center in the longitudinal direction of the absorbent article main body, the absorbent article main body is formed so as to be inclined and joined to the center line in the width direction of the absorbent article main body.

  Then, the flap portion on one end side in the longitudinal direction of the absorbent article main body is directed from one end side in the longitudinal direction of the absorbent article main body toward the center side in the longitudinal direction of the absorbent article main body in the width direction of the absorbent article main body. By joining the center line in an inclined manner to form a joint, for example, the corner that protrudes toward the absorber side is not formed at the joint, so the part that touches the skin at the time of wearing does not become hard, and the touch is improves.

  The disposable absorbent article according to claim 4 is the disposable absorbent article according to claim 3, wherein the absorbent body has a notch part into which the joint part is fitted in a part facing the joint part. is there.

  And by forming the notch part which this junction part fits in the part facing the junction part of an absorber, even if it does not lengthen a flap part more than necessary in the longitudinal direction of an absorptive article main part, a junction part is formed. It becomes possible to ensure sufficiently in the longitudinal direction of the absorbent article main body.

  The disposable absorbent article according to claim 5 is the disposable absorbent article according to any one of claims 1 to 4, wherein the joining portion is formed by joining the flap portions in a lattice shape.

  And by joining a flap part in a grid | lattice form and forming a junction part, compared with the case where the whole surface of a junction part is joined, a junction part becomes soft and the touch at the time of mounting | wearing improves.

  The disposable absorbent article according to claim 6 is the disposable absorbent article according to any one of claims 1 to 4, wherein the joint portion is formed by joining the flap portions in a dot shape.

  And by joining a flap part in the shape of a point and forming a joined part, compared with the case where the whole surface of a joined part is joined, a joined part becomes soft and the touch at the time of wearing improves.

  The disposable absorbent article according to claim 7 is the disposable absorbent article according to any one of claims 1 to 6, wherein the joint portion is formed by heat-sealing the flap portion with a peelable strength. .

  And by heat-sealing the flap part and forming the joint part, members such as adhesives are unnecessary, so manufacturing costs are suppressed, and it is necessary by joining the flap part with peelable strength. Accordingly, the joint can be peeled off, and can be used in accordance with various usage situations.

  The disposable absorbent article according to claim 8 is the disposable absorbent article according to any one of claims 1 to 7, wherein the absorbent article main body protrudes from a central portion of the absorbent body at a central portion in a longitudinal direction and a width direction. It is what.

  And by projecting the central part of the absorbent body at the central part in the longitudinal direction and the width direction of the absorbent article main body, the projecting part adheres closely to the wearer's crotch when worn, so excrement Can be absorbed by the absorber without leakage.

  The disposable absorbent article according to claim 9 is the disposable absorbent article according to any one of claims 1 to 8, wherein the absorbent article main body is a nonwoven fabric at least in the longitudinal direction of the outer surface of the liquid-impermeable back sheet. It is covered with.

  And the outer surface of the liquid-impermeable back sheet located on the outer side of the joint portion is covered with the nonwoven fabric by covering at least the joint portion side in the longitudinal direction of the outer surface of the liquid-impervious back sheet of the absorbent article body with the nonwoven fabric. It is possible to improve the touch when hitting the skin.

  The method for producing a disposable absorbent article according to claim 10 comprises disposing an absorbent body between a liquid-impervious back sheet continuous in the longitudinal direction and a liquid-permeable top sheet continuous in the longitudinal direction. Joining the liquid-permeable back sheet and the liquid-permeable surface sheet to form a flap part and a side flap part on the outside of each absorbent body to form a continuous absorbent article body; Folding the absorbent article main body along the center line in the width direction, joining every other flap part to alternately form joined parts and non-joined parts in the longitudinal direction, and joining And a step of cutting the non-joining portion in the width direction in the vicinity of the center portion in the longitudinal direction.

  And an absorber is arrange | positioned between the liquid-impermeable back sheet continuous in a longitudinal direction and the liquid-permeable surface sheet continuous in a longitudinal direction, respectively, and a liquid-impermeable back sheet and a liquid-permeable surface sheet are provided. Joining and forming a flap part and a side flap part on the outside of each absorbent body to form a continuous absorbent article body, folding the continuous absorbent article body along the center line in the width direction, By joining every other part, forming joined parts and non-joined parts alternately in the longitudinal direction, and cutting the joined parts and non-joined parts in the width direction in the vicinity of the central part in the longitudinal direction, respectively. And it becomes possible to improve the manufacturability of the absorbent article body that can prevent the leakage of excrement from the longitudinal end of the absorbent article body at the joint.

  According to the first aspect of the present invention, the flap portions are formed on both outer sides in the longitudinal direction of the absorbent body of the absorbent article main body having the longitudinal direction and the width direction, and the side flaps are respectively formed on both outer sides in the width direction of the absorbent body. Forming a portion, folding back the liquid-permeable surface sheet along the center line in the width direction, and joining at least one of the flap portions including the center line in the width direction to each other to form a joint portion Thereby, the leakage of excrement from the end portion in the longitudinal direction of the absorbent article main body can be prevented by the joint portion formed three-dimensionally.

  According to invention of Claim 2, while forming a solid flap along a longitudinal direction in a width direction both-sides edge part of an absorptive article main part, while a solid flap can prevent leakage of excrement in the width direction, The base end portion of the three-dimensional flap is joined to the absorbent article main body, the distal end portion protrudes in a free end shape, and an elastic body is disposed at the distal end portion, and the width direction of the absorbent article main body at both longitudinal ends. The gap is formed between the absorbent article body and the three-dimensional flap between the absorbent article body and the three-dimensional flap. Will not occur.

  According to the invention of claim 3, the flap portion on one end side in the longitudinal direction of the absorbent article body is directed from one end side in the longitudinal direction of the absorbent article body toward the center side in the longitudinal direction of the absorbent article body. By forming the joint portion by incliningly joining to the center line in the width direction of the absorbent article main body, for example, a corner portion or the like that protrudes toward the absorber side is not formed at the joint portion, so that the portion that hits the skin when worn is It does not become hard and can improve the touch.

  According to invention of Claim 4, by forming the notch part which this junction part fits in the part facing the junction part of an absorber, a flap part is more than necessary in the longitudinal direction of an absorbent article main body. Even if it is not lengthened, the joining portion can be sufficiently secured in the longitudinal direction of the absorbent article main body.

  According to the invention described in claim 5, by joining the flap portions in a lattice shape to form the joint portion, the joint portion becomes softer than the case where the entire surface of the joint portion is joined, and the touch at the time of wearing is reduced. It can be improved.

  According to the invention described in claim 6, by joining the flap portions in a dot shape to form the joint portion, the joint portion becomes softer than the case where the entire surface of the joint portion is joined, and the touch at the time of wearing is reduced. It can be improved.

  According to the invention described in claim 7, by forming the joint portion by heat-sealing the flap portion, a member such as an adhesive is not required, so that the manufacturing cost can be suppressed and the flap portion can be peeled off. By joining, if necessary, the joint can be peeled off and used in various usage situations.

  According to the invention of claim 8, by projecting the central part of the absorbent body at the central part in the longitudinal direction and the width direction of the absorbent article main body, when the projected part is worn, Since it adheres between the crotch, excretion can be absorbed by the absorbent body without leakage.

  According to the ninth aspect of the present invention, the liquid-impervious material positioned outside the joint portion is coated with the nonwoven fabric at least the joint portion side in the longitudinal direction of the outer surface of the liquid-impervious back sheet of the absorbent article main body. The touch when the outer surface of the back sheet hits the wearer's skin can be improved.

  According to invention of Claim 10, an absorber is arrange | positioned between the liquid-impermeable back sheet continuous in a longitudinal direction, and the liquid-permeable surface sheet continuous in a longitudinal direction, respectively, and a liquid-impermeable back sheet And the liquid-permeable surface sheet are joined to form a flap portion and a side flap portion on the outer side of each absorbent body to form a continuous absorbent article body, and the continuous absorbent article body in the width direction. Folds along the center line, and every other flap is joined to form joints and non-joins alternately in the longitudinal direction, and the joints and non-joins are in the vicinity of the center in the longitudinal direction. By cutting in the width direction, it is possible to improve the manufacturability of the absorbent article body that can prevent the leakage of excrement from the longitudinal end of the absorbent article body at the joint.

  Hereinafter, the structure of the disposable absorbent article of the 1st Embodiment of this invention is demonstrated with reference to drawings.

  1 and 2 show a disposable absorbent article, and this disposable absorbent article includes a rectangular absorbent article body 1 having a longitudinal direction and a width direction. Further, the absorbent article main body 1 includes a liquid-permeable top sheet 2, a liquid-impervious back sheet 3, and an absorbent body 4 having liquid retention disposed between these sheets 2 and 3, Flaps 5 and 5 formed by joining the sheets 2 and 3 are formed on both outer sides in the longitudinal direction of the absorbent body 4, that is, both ends in the longitudinal direction, and both outer sides in the width direction of the absorbent body 4, That is, side flap portions 6 and 6 formed by joining the sheets 2 and 3 are formed on both sides in the width direction, and the flap portions 5 and 6 are integrated. And this absorptive article main part 1 is formed in the expansion | swelling state shown in FIG. 2 at the center part of the width direction at the center of the line symmetry, and is formed in the shape of an elongate square.

  The liquid-permeable surface sheet 2 has liquid permeability so that excrement such as urine can permeate the absorbent body 4. For example, the absorbent article main body 1 is made of woven fabric, non-woven fabric, porous film, synthetic fiber or the like. It is molded into a shape that covers the entire surface.

  The liquid-impervious back sheet 3 has an upper surface peripheral portion bonded to the lower surface peripheral portion of the liquid-permeable surface sheet 2 with an adhesive or the like. Moreover, this liquid-impermeable back sheet 3 has liquid impermeability through which urine cannot permeate, and is formed of a synthetic resin film such as polyolefin such as polyethylene resin.

  The absorber 4 is arranged line-symmetrically with the central portion in the longitudinal direction as the center, and is formed in an elongated rectangular shape with a line-symmetric shape with the central portion in the width direction as the center. Moreover, the absorber 4 is flat between the lower surface center part of the liquid-permeable surface sheet 2 and the upper surface center part of the liquid-impermeable back sheet 3, and includes at least the longitudinal center region of the absorbent article main body 1. Arranged in position. Further, the absorbent body 4 is formed of a material that can absorb excrement such as urine, for example, pulp as a main material and partially containing a substance such as a polymer absorbent body.

  Each flap 5 is extended from both outer edges in the longitudinal direction of the absorbent body 4 by joining the longitudinal ends of the absorbent body 4 of the liquid-permeable top sheet 2 and the liquid-impermeable back sheet 3. ing. Moreover, each of these flap parts 5 is formed along the width direction of the absorbent article main body 1. Furthermore, the flap part 5 located in the front end part which is the one end part of the longitudinal direction of the absorbent article main body 1 is folded along the center line C in the width direction with the liquid-permeable surface sheet 2 as the inner side, and is superposed. The joining portion 11 is formed by joining with a seal.

  Here, as shown in FIG. 1, the joining part 11 joins the flap part 5 located in the front side of the absorbent article main body 1 between the parts containing the center line C of the width direction over the whole width direction. Is formed. As a result, the joint portion 11 rises along a direction substantially perpendicular to the absorbent article body 1, and three-dimensional leakage barriers 12 are formed on both sides in the width direction on the front side of the absorbent article body 1. Inside the leak-proof wall 12, a sac-like space 13 is formed. In the space portion 13, the front side of the absorbent article body 1 is closed by the joint portion 11.

  Each side flap portion 6 extends from both outer edges in the width direction of the absorbent body 4 by joining both sides of the absorbent body 4 in the width direction of the liquid-permeable top sheet 2 and the liquid-impermeable back sheet 3. Yes. Each side flap portion 6 is formed along the longitudinal direction of the absorbent article main body 1, and both end portions in the longitudinal direction are integrally joined to both side portions in the width direction of the flap portion 5.

  Next, the manufacturing method of the disposable absorbent article of the first embodiment will be described with reference to FIG.

  First, as shown in FIG. 3 (a), an absorbent body 4 is disposed between a liquid-permeable top sheet 2 continuous in the longitudinal direction and a liquid-impervious back sheet 3 continuous in the longitudinal direction. The sheets 2 and 3 are joined together to form the flap portion 5 and the side flap portion 6 around the absorbent body 4 to form the unfolded absorbent article body 1 that is continuous in the longitudinal direction.

  Next, as shown in FIG. 3B, the unfolded absorbent article body 1 that is continuous in the longitudinal direction is folded back about the center line C in the width direction.

  Further, as shown in FIG. 3 (c), every other flap portion 5 between the absorbers 4 is joined by heat sealing to form a joined portion 11 and a non-joined portion 14. In addition, when joining the flap part 5, it heat-seals with a predetermined width.

  And as shown in FIG.3 (d), the continuous absorbent article main body 1 is cut | disconnected in the width direction in the approximate center part of each longitudinal direction of the junction part 11 and the non-joining part 14, and a disposable absorbent article. To complete.

  Next, the operation of the first embodiment will be described.

  Flap portions 5 and 5 are formed on both outer sides in the longitudinal direction of the absorbent body 4 of the absorbent article body 1, and side flap portions 6 and 6 are formed on both outer sides in the width direction of the absorbent body 4, respectively. The liquid-permeable surface sheet 2 is folded back along the center line C, and the portions including the center line C in the width direction of the flap portion 5 on the front side are joined to each other to form the joint portion 11, thereby absorbing Even when the vicinity of the center line C in the width direction in which the article body 1 is folded back is closed in the longitudinal direction, for example, when excrement is vigorously excreted, excretion from the front end in the longitudinal direction of the absorbent article body 1 Leakage of an object can be surely prevented by the joint portion 11 formed in three dimensions.

  In particular, when the wearer is a male, by inserting the male organ into the space portion 13, a comfortable wearing feeling and a sense of security without worrying about leakage can be obtained.

  Furthermore, since the absorbent article main body 1 becomes three-dimensional by joining the front side flap part 5, it becomes easy to fit a wearer's body.

  And a disposable diaper etc. are mounted | worn from the top in the state which mounted | wore with this absorbent article main body 1. FIG. As a result, it is possible to provide a disposable absorbent article that is easy to wear and excellent in excrement leakage prevention characteristics.

  Moreover, since the flap part 5 is heat-sealed and the joining part 11 is formed, a member such as an adhesive becomes unnecessary, so that the manufacturing cost can be suppressed, and there is no adhesive in a state where the joining part 11 is peeled off. Therefore, it is possible to prevent rash of the wearer's skin.

  Furthermore, by joining the flap portion 5 with a peelable strength, the joint portion 11 can be peeled off as necessary, and can be used in accordance with various usage situations. In particular, if the entire joint 11 can be peeled off, it can be used as a flat absorbent article body 1 as shown in FIG. 2 as required, and the usability is improved.

  And in the said embodiment, the absorber 4 is each arrange | positioned between the liquid-permeable surface sheet 2 continuous in a longitudinal direction, and the liquid-impermeable back sheet 3 continuous in a longitudinal direction, and each sheet | seat 2,3 To form the continuous absorbent article main body 1 by forming the flap portions 5 and 5 and the side flap portions 6 and 6 on the outside of each absorbent body 4, respectively. Folded along the center line C in the width direction, every other flap portion 5 is joined to form joined portions 11 and non-joined portions 14 alternately in the longitudinal direction, and the joined portions 11 and non-joined portions 14 Each was cut in the width direction in the vicinity of the center portion in the longitudinal direction, whereby the absorbent article main body 1 was manufactured.

  As a result, it is only necessary to add a step of folding the absorbent article main body 1 and a step of joining every other flap portion 5 to a manufacturing method for manufacturing a general absorbent article main body. It can be improved.

  In addition, by joining every other flap portion 5, for example, both end portions in the longitudinal direction are formed without setting the cutting position of the joining portion 11 of the flap portion 5 or the non-joining portion 14 more precisely than necessary. The bonded absorbent article main body or the absorbent article main body in which both ends in the longitudinal direction are not bonded is not erroneously manufactured, and the productivity can be further improved.

  Further, since it is only necessary to form every other joining portion 11 in the longitudinal direction, the sheets 2 and 3 can be easily joined even if the production speed is improved, so that the production speed can be easily improved.

  And since the absorbent article body 1 is formed with the front side in three dimensions and the rear side in plane, both the method of using the space portion 13 as the ventral side and the method of using the back side as the back side. Is possible.

  Next, a second embodiment will be described with reference to FIG. In addition, about the structure and effect | action similar to the said 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  In the embodiment shown in FIG. 4, a pair of three-dimensional flaps 21 are formed on the absorbent article main body 1. Each of these three-dimensional flaps 21 has a base end joined to both side edges in the width direction of the liquid-permeable surface sheet 2 of the absorbent article main body 1, and a distal end directed toward the center in the width direction of the absorbent article main body 1. Projecting into a free end. An elastic body 22 is disposed along the longitudinal direction at the free end that is the protruding tip of each solid flap 21.

  In addition, each of these three-dimensional flaps 21 is tilted to the center side in the width direction of the absorbent article main body 1, and the inner surfaces facing each other, that is, the surfaces on the liquid-permeable surface sheet 2 side, are liquid-permeable at both ends in the longitudinal direction. The surface sheet 2 is bonded. Further, each of these three-dimensional flaps 21 is joined to the outer surface, that is, the surface opposite to the liquid-permeable surface sheet 2 together with the joint 11 at the end on the joint 11 side.

  And according to the said 2nd Embodiment, by forming the solid flap 21 along a longitudinal direction in the width direction both-sides edge part of the absorbent article main body 1, the solid flap 21 is the excretion of the excrement in the width direction. Leakage can be prevented.

  Further, the base end portion of the three-dimensional flap 21 is joined to the absorbent article main body 1, the elastic body 22 is disposed by projecting the distal end portion into a free end shape, and the absorbent article main body 1 is disposed at both ends in the longitudinal direction. By absorbing the inner surfaces of the three-dimensional flaps 21 together with the joint portions 11 at the end portions on the joint portion 11 side, the inner surfaces are joined to the absorbent article main body 1 by tilting toward the center in the width direction. There is no gap between the article main body 1 and the three-dimensional flap 21 on the joint 11 side, and the leakage of excrement from the longitudinal direction of the absorbent article main body 1 can be more reliably prevented.

  Next, a third embodiment will be described with reference to FIGS. In addition, about the structure and effect | action similar to said each embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  In the embodiment shown in FIG. 5 and FIG. 6, the absorbent article body 1 protrudes upward with respect to the absorbent article body 1 at the center part of the absorbent body 4 at the center part in the longitudinal direction and the width direction. Convex portions 25 are formed.

  For example, as shown in FIG. 6, the convex portion 25 is formed by pushing up the central portion of the absorbent body 4 and then fixing the left and right liquid-impermeable back sheets 3 with an adhesive or the like.

  As a result, when the absorbent article main body 1 is mounted, the convex portion 25 is closely attached to the wearer's crotch, so that excrement can be absorbed by the absorbent body 4 without leakage.

  In addition, the structure which applies the convex part 25 of the said 3rd Embodiment to the said 1st Embodiment is also possible.

  In addition, as a method of forming the convex portion 25, for example, various other methods such as a method in which an elastic body is attached in the width direction of the liquid-impermeable back sheet 3 in a stretched state and formed by expansion and contraction of the elastic body are possible. It is.

  Furthermore, in each said embodiment, if the part including the center line C of the width direction where the absorbent article main body 1 is folded back is joined, the junction part 11 is necessarily joined over the flap part 5 whole. You don't have to. For example, as shown in FIG. 7, if the peeling portion 26 that does not join the flap portion 5 is provided in the vicinity of the side flap portions 6 and 6 on both sides in the width direction of the absorbent article body 1, the peeling portion 26 is joined. Since it does not become harder, the touch when worn is improved.

  And in each said embodiment, as shown in FIG.8 and FIG.9, toward the center side of a longitudinal direction from the one end part of the absorbent article main body 1 folded back along the centerline C of the width direction Then, the flap portion 5 may be joined to the center line C in a linearly inclined manner, and the joined portion 11 may be formed in a triangular shape in a side view. In this case, since the joint portion 11 is located toward the absorber 4, the cutout portion 27 is formed in a circular arc shape at a position including the center line C of one end portion in the longitudinal direction of the absorber 4 facing the joint portion 11. By forming the notch, the joining portion 11 can be sufficiently secured in the longitudinal direction of the absorbent article main body 1 without making the flap portion 5 longer than necessary in the longitudinal direction of the absorbent article main body 1 and absorbable. The article body 1 does not become larger than necessary in the longitudinal direction. Further, with this configuration, the corners and the like protruding toward the absorber 4 are not formed in the joint 11, and when the absorbent article body 1 is opened in the width direction from the peeling part 26, the joint 11 Since the absorbent article main body 1 is opened along the boundary line L between the flap portion 5 and the flap portion 5, the portion that contacts the wearer's skin at the time of wearing does not become hard, and the touch can be improved.

  Furthermore, as shown in FIG. 10, the joining portion 11 extends from one end in the longitudinal direction of the absorbent article main body 1 folded along the center line C in the width direction to the center line C toward the center in the longitudinal direction. The flap portion 5 is joined in an arc shape, or as shown in FIG. 11, from the vicinity of one end portion in the longitudinal direction of the absorbent article main body 1 folded back along the center line C in the width direction to the center side in the longitudinal direction. Even if the flap portion 5 is joined in a parallelogram shape inclined toward the center line C toward the center line C, the same effects as those of the embodiment shown in FIGS. 8 and 9 can be obtained. Further, in each of the embodiments shown in FIGS. 8 to 11, it is possible to adopt a configuration in which the three-dimensional flap 21 is not joined to the joint portion 11, and in this case, the joint portion 11 becomes harder than necessary. It can improve the touch more.

  And in said each embodiment, the absorbent article main body 1 does not necessarily need to be square shape. For example, as shown in FIG. 12, by making the rear side of the absorbent article body 1 into a substantially convex shape or a substantially gourd shape that is formed wider in the width direction than the front side, excrement from the rear side Leakage can be prevented more reliably, and excrement leakage prevention characteristics can be further improved.

  Moreover, in each said embodiment, as shown in FIG. 13, the absorbent article main body 1 is the outer surface of the liquid-impermeable back sheet 3, ie, the joint 11 side of the surface opposite to the liquid-permeable surface sheet 2. A configuration in which a certain front side is covered with the nonwoven fabric 28 is also possible. In the absorbent article body 1, the liquid-impermeable back sheet 3 in the front portion may hit the wearer's skin when the absorbent article body 1 is used. Since the touch is not good, covering the outer surface with the nonwoven fabric 28 can improve the touch when the outer surface of the liquid-impermeable back sheet 3 hits the wearer's skin. In addition, the nonwoven fabric 28 should just cover the at least front part of the liquid-impermeable back sheet 3, for example, the structure etc. which cover the whole outer surface of the liquid-impermeable back sheet 3 are also possible.

  Furthermore, it is not necessary for the joint portion 11 to join the entire region. For example, as shown in FIG. 14, the flap portion 5 is joined in a lattice shape within the region of the joint portion 11, or as shown in FIG. The inside of the region may be partially joined, for example, the flap portion 5 may be joined at a large number of points in the region of the joined portion 11. In these cases, the joining portion 11 becomes softer than the case where the entire region of the joining portion 11 is joined, and the touch when worn can be improved.

  Furthermore, the joining part 11 can be joined by various methods other than heat sealing, such as joining with an adhesive.

It is a perspective view which shows the disposable absorbent article of the 1st Embodiment of this invention. It is a top view which shows the expansion | deployment state of a disposable absorbent article same as the above. It is an explanatory view showing a manufacturing method of the disposable absorbent article, (a) is an explanatory view showing the initial state of the disposable absorbent article, (b) is an explanatory view showing a folding process of the disposable absorbent article, (c) is explanatory drawing which shows the joining process of a disposable absorbent article same as the above, (d) is explanatory drawing which shows the cutting process of a disposable absorbent article same as the above. It is a top view which shows the disposable absorbent article of the 2nd Embodiment of this invention. It is a top view which shows the disposable absorbent article of the 3rd Embodiment of this invention. It is sectional drawing which shows a disposable absorbent article same as the above. It is a side view which shows other embodiment of the disposable absorbent article of this invention. It is a perspective view which shows other embodiment of the disposable absorbent article of this invention. It is a side view which shows a part of disposable absorbent article same as the above. It is a side view which shows a part of other embodiment of the disposable absorbent article of this invention. It is a side view which shows a part of other embodiment of the disposable absorbent article of this invention. It is a top view which shows the expansion | deployment state of other embodiment of the disposable absorbent article of this invention. It is a perspective view which shows other embodiment of the disposable absorbent article of this invention. It is a side view which shows a part of other embodiment of the disposable absorbent article of this invention. It is a side view which shows a part of disposable absorbent article of other embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Absorbent article main body 2 Liquid-permeable surface sheet 3 Liquid-impermeable back sheet 4 Absorber 5 Flap part 6 Side flap part
11 Joint
14 Non-joined part
21 3D flap
22 Elastic body
27 Notch
28 Nonwoven fabric C Center line

Claims (10)

An absorption having a longitudinal direction and a width direction, comprising a liquid-permeable top sheet, a liquid-impervious back sheet, and an absorbent body disposed between the liquid-permeable top sheet and the liquid-impervious back sheet. Equipped with a functional article body,
In the absorbent article main body, flap portions are formed on both outer sides in the longitudinal direction of the absorber, and side flap portions are formed on both outer sides in the width direction of the absorber,
The absorbent article main body is folded back along the center line in the width direction with the liquid-permeable surface sheet inside, and at least one of the flap portions including the center line in the width direction is joined to each other. A disposable absorbent article characterized by being a joint. The absorbent article body includes three-dimensional flaps formed along the longitudinal direction at both side edges in the width direction,
Each of the three-dimensional flaps has a base end portion joined to the absorbent article main body, a tip end portion protruding in a free end shape, and an elastic body disposed on the tip end portion. 2. The article body according to claim 1, wherein the article body is tilted to the center side in the width direction and joined to the absorbent article body, and is joined to each other together with the joining portion at an end portion on the joining portion side. Disposable absorbent article. The joining portion is configured so that a flap portion on one end side in the longitudinal direction of the absorbent article body is directed toward the center side in the longitudinal direction of the absorbent article body from one end side in the longitudinal direction of the absorbent article body. The disposable absorbent article according to claim 1 or 2, wherein the disposable absorbent article is formed by being joined to the center line in the width direction of the article body in an inclined manner. The disposable absorbent article according to claim 3, wherein the absorbent body has a notch portion into which the joint portion is fitted in a portion facing the joint portion. The disposable absorbent article according to any one of claims 1 to 4, wherein the joining portion is formed by joining the flap portions in a lattice shape. The disposable absorbent article according to any one of claims 1 to 4, wherein the joining portion is formed by joining the flap portions in a dot shape. The disposable absorbent article according to any one of claims 1 to 6, wherein the joint portion is formed by heat-sealing the flap portion with a peelable strength. The disposable absorbent article according to any one of claims 1 to 7, wherein the absorbent article main body has a central portion protruding from the central portion in the longitudinal direction and the width direction. The disposable absorbent article according to any one of claims 1 to 8, wherein the absorbent article main body is coated with a nonwoven fabric at least in the longitudinal direction of the outer surface of the liquid-impermeable back sheet. An absorbent body is disposed between the liquid-impervious back sheet continuous in the longitudinal direction and the liquid-permeable front sheet continuous in the longitudinal direction, and the liquid-impervious back sheet and the liquid-permeable front sheet are provided. Joining and forming a flap part and a side flap part on the outside of each absorber to form a continuous absorbent article body;
Folding the continuous absorbent article body along the center line in the width direction;
A step of alternately joining the flap portions and joining portions and non-joining portions in the longitudinal direction;
A method of manufacturing a disposable absorbent article, comprising: cutting the joining portion and the non-joining portion in the width direction in the vicinity of the center portion in the longitudinal direction.

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