JP4576314B2 - Disposable absorbent article - Google Patents

Description

  The present invention relates to a disposable absorbent article for children, adults or incontinence.

  Conventionally, generally, a disposable absorbent article has a substantially square absorbent article body having a liquid-permeable top sheet, a liquid-impervious back sheet, and an absorbent body sealed between the two sheets. It is formed into a shape.

  Then, as a configuration for preventing the leakage of excrement from both side edges and the respective end edges in the longitudinal direction of the absorbent article main body, in the vicinity of the front edge in the longitudinal direction of the absorbent article main body or both side edges of the rear part. The inner surface sheets are stacked on top of each other, and the inner sides of both sides of the absorbent article main body are folded in the width direction with a pair of folding lines extending in the longitudinal direction and fixed along the folding lines. A male who stands up with one end of the absorbent article body or the other end of the absorbent article body in the stretched state, with one end in the longitudinal direction of the absorbent article body or both sides of the other end of the absorbent article body. What forms an organ accommodation space or excrement accommodation space is known (for example, refer patent document 1).

  However, the disposable absorbent article described in Patent Document 1 is formed on the left and right of the central portion by the left and right absorbent article main bodies forming the male organ housing space or the excrement housing space and the elastic force of the elastic body. Although the leakage barrier prevents leakage of excrement in the width direction of the absorbent article body, the end in the longitudinal direction is open, so if excrement is excreted vigorously, There is a risk of excretion leaking from the opening.

Therefore, for example, in Japanese Patent Application No. 2004-229599, etc., 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. Folding the absorbent article main body with the liquid-permeable surface sheet as the inner side along the direction center line, and joining the portions including at least the center line in the width direction of either one of the flap parts, The structure which prevents the leak from the edge part of the longitudinal direction of a disposable absorbent article is proposed.
JP 2002-345882 (page 3-4, FIG. 1)

  In the above-mentioned disposable absorbent article, the disposable absorbent article is formed into a three-dimensional shape by forming the joint portion, leakage from the end portion is prevented, and the joint portion can be easily picked up and attached to the wearer. .

  However, since the joined portion is folded so that the liquid-permeable surface sheet is on the inner side and the flap portion is joined, the outer side of the absorbent article main body is changed from the folded state to the used state. For example, when the absorbent article main body is pulled toward the side, a force acts in the peeling direction with respect to the joint portion, and there is a problem that the joint portion may be peeled off.

  Further, even if the joint portion does not completely peel off, a part of the peeled joint portion appears on the liquid-permeable surface sheet side, so that the peeled joint portion may hit the skin and cause a sense of incongruity.

  The present invention has been made in view of the above points, and provides a disposable absorbent article that facilitates mounting and can reliably form a knob for forming a three-dimensional shape and has a good mounting feeling. For the purpose.

The disposable absorbent article according to claim 1 is a liquid-permeable top sheet, a liquid-impervious back sheet, and an absorber disposed between the liquid-permeable top sheet and the liquid-impervious back sheet. An absorbent article body in which both sides in the width direction and both ends in the longitudinal direction are formed, and a front part, a center part, and a rear part are sequentially formed in the longitudinal direction, and the longitudinal direction of the absorbent article body At both ends, the absorption is performed at the flap portion extending outwardly from at least both longitudinal edges of the absorbent body, and at the flap portion located at either the front portion or the rear portion. One side part is joined to each of the knob part formed along substantially the center in the width direction of the absorbent article main body and the width direction both side parts of the absorbent article main body, and the elastic member is arranged on each other side part. a pair of cuff to be set by free end shaped, the absorbent The knob part is formed by joining at least part of both sides in the width direction to the flap part in a state where the article body is folded back in the vicinity of the center in the width direction so as to protrude toward the liquid-impermeable back sheet side. The flap sheet is joined to the flap part and the pair of cuff parts .

The disposable absorbent article according to claim 2 is the disposable absorbent article according to claim 1, wherein the flap sheet has one end in the longitudinal direction located in the vicinity of one end in the longitudinal direction of the absorbent article main body and extends in the width direction. The other end in the longitudinal direction is extended to the portion where the absorbent body is located and is not joined to the absorbent article main body, and both sides in the width direction are transparent to the flap. It is joined to at least one of the liquid surface sheet .

Disposable absorbent article according to claim 3, wherein, in the disposable absorbent article according to claim 1 or 2, wherein the flap sheet is formed by extendable resilient members in the width direction, both side portions each in a stretched state flaps The intermediate part between the two side parts is not joined to the flap part, and the knob part is formed by the intermediate part as the flap sheet contracts.

According to the first aspect of the present invention, at least a part of both sides in the width direction of the flap sheet is joined to the flap portion in a state of being folded back in the vicinity of the center in the width direction so as to protrude toward the liquid-impermeable back sheet side. By providing the knob part along the substantially center of the absorbent article body in the width direction, when the wearer wears the knob part, the knob part can be easily attached and the knob part is attached. The center of the absorbent article main body and the wearer's body can be easily attached to the wearer at an appropriate position, and the knob can be attached to the front part or the rear part. By providing either of these, the absorption area at the central portion located near the urination portion is not narrowed when worn, and the knob is reliably formed by the flap sheet, and the knob is formed by the flap sheet. Dress Since there is no to hit directly to the person, wearing feeling is good. Moreover, while joining each one side part of a pair of cuff parts to each of the width direction both sides of an absorbent article main body, each other side part is made into the free end shape by which the elastic member was arrange | positioned, Leakage can be prevented by the cuff part, and since each cuff part is not joined to the absorbent article main body at a part other than the flap part, the cuff part is joined by the flap sheet joined to each cuff part at the flap part. Easier to get up.

According to invention of Claim 2, the longitudinal direction one end part side of a flap sheet | seat is joined to a flap part over the width direction in the longitudinal direction one end part vicinity of an absorbent article main body, and a longitudinal direction other end part side is joined. The flap extends to the portion where the absorbent body is located and is not joined to the absorbent article main body, and the both sides in the width direction are joined to at least one of the flap portion and the liquid-permeable surface sheet. A space is formed between the other end of the sheet in the longitudinal direction and the absorbent article main body, and excrement from the wearer can be accommodated in this space .

According to the third aspect of the present invention, the flap sheet is formed of an elastic member that can be expanded and contracted in the width direction, and in the state in which the flap sheet is stretched, both side portions are joined to the flap portion and an intermediate portion between the both side portions. By not joining the part to the flap part, the knob sheet 15 is formed by the intermediate part by contraction of the flap sheet, so that the knob part can be easily formed without folding the flap part.

Hereinafter, the configuration of the disposable absorbent article according to the first reference technique of the present invention will be described with reference to FIGS. 1 and 2.

  1 and 2 show a disposable absorbent article, and this disposable absorbent article includes a substantially rectangular absorbent article body 1 having a longitudinal direction and a width direction. Further, the absorbent article 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, In the unfolded state shown in FIG. 1, it is formed in a line-symmetric left-right symmetry with the center in the width direction as the center, and has an elongated substantially rectangular shape. Further, around the absorbent body 4 of the absorbent article main body 1, a flap portion 5 in which the liquid-permeable top sheet 2 and the liquid-impervious back sheet 3 are joined extends.

  Further, the absorbent article main body 1 has a front portion 11 on the abdomen side of the wearer and a notch recess 12 located around the legs on both sides along the longitudinal direction, and a center located at the crotch portion of the wearer. A portion 13 and a rear portion 14 on the back side of the wearer are sequentially formed. The absorbent article main body 1 is provided with a knob portion 15 in the flap portion 5 along the center line CL in the width direction.

  Hereinafter, the front portion 11 side will be described as the front side of the disposable absorbent article, and the rear portion 14 side will be described as the rear side of the disposable absorbent article.

  The liquid-permeable surface sheet 2 is formed of, for example, a woven fabric, a nonwoven fabric, a porous film, a synthetic fiber, or the like, and has liquid permeability so that excrement such as urine can pass through the absorber 4.

  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. The liquid-impermeable back sheet 3 is liquid-impermeable so that urine cannot permeate, and is formed of a film-like sheet of synthetic resin 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 and is disposed at a position including at least the central region in the longitudinal direction of the absorbent article body 1. 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. The absorbent body 4 has a longitudinal dimension and a width dimension smaller than those of the absorbent article main body 1 and is formed substantially along the outer shape of the absorbent article main body 1. Therefore, the longitudinal ends and the widthwise both sides of the absorbent body 4 are surrounded by the flap portions 5.

  The flap portion 5 is formed in a frame shape around the entire absorber 4.

The knob portion 15 serves as a knob and marks during mounting of the disposable absorbent article, it may be provided in any of the front portion 11 and rear portion 14 shown in FIG. 1, the reference technology For convenience, the following description will be made assuming that the front portion 11 is provided. That is, the knob 15 protrudes toward the liquid-impervious back sheet 3 with the liquid-permeable front sheet 2 inward so that the absorbent article body 1 protrudes toward the liquid-impervious back sheet 3. Both sides in the width direction of the flap sheet 16 are joined at the flap portion 5 of the front portion 11 in a state of being folded in the vicinity of the center line CL in the width direction so as to have a shape (substantially V-shaped cross section). Thus, the space 18 surrounded by the flap 5 is formed so as to be partitioned inside.

  As a result, the knob portion 15 includes side walls 15a and 15b facing each other, and is formed in a widened shape in the width direction from the central portion 13 side to the flap portion 5 side. Compared with the longitudinal end portion on the rear portion 14 side, the longitudinal end portion on the 11 side is narrowed toward the center line CL side in the width direction, and the width dimension is made smaller.

  Here, the opposite side walls 15a and 15b of the knob portion 15 may or may not be joined. However, in order to prevent the knob portion 15 from becoming harder and ensure a good wearing feeling, the both side walls It is preferable not to join 15a and 15b.

  Furthermore, the larger the protruding amount of the knob portion 15 is, the easier it is to pick and it is easy to confirm as a mark. On the other hand, if it is too large, a feeling of strangeness is caused at the time of wearing, and the absorption area by the absorber 4 becomes small. For this reason, it is preferable that the knob 15 has a small protruding amount in order to secure a function as a knob and a mark, without feeling uncomfortable at the time of wearing, and to further increase the absorption area by the absorber 4. Therefore, it is desirable that the absorber 4 positioned at least in the central portion 13 has a protruding amount that is not affected by the folding that forms the knob 15. For example, the protrusion amount of the apex portion of the knob 15 is 1/10 to 1/4 with respect to the longitudinal dimension of the absorber 4 of the front portion 11 or the rear portion 14 where the knob 15 is provided, A range of 1/20 to 1/5 with respect to the width direction dimension is preferable.

  Further, the flap sheet 16 is formed, for example, in the longitudinal direction in the width direction, and the side end flap portions 19, 19 are joined by joining both sides to the flap portion 5 across the center line CL in the width direction of the absorbent article body 1. At the same time, the intermediate portion between the two side portions is not joined to the flap portion 5. That is, the flap sheet 16 is joined to the flap portion 5 across the knob portion 15.

  Here, as a method for joining the both sides of the flap sheet 16 and the flap portion 5, any method such as heat sealing, hot melt bonding, or ultrasonic bonding may be used.

Next, the function and effect of the first reference technique will be described.

  When manufacturing the disposable absorbent article, the width is set so that the flap portion 5 located on the front portion 11 of the absorbent article body 1 protrudes toward the liquid-impervious back sheet 3 from the unfolded state shown in FIG. Folding is performed in the vicinity of the center line CL in the direction, and the flap sheet 16 is fixed to the flap part 5 so as to straddle the folded part, thereby forming the knob 15 along the center line CL in the width direction of the absorbent article body 1. To do.

  The formation of the knob 15 allows the wearer to easily wear the knob 15 while wearing it, and the knob 15 serves as a mark when wearing the absorbent article. By aligning the centers of the main body 1 and the wearer's body, positional displacement in the wearing state can be prevented, and the wearer can be easily worn at an appropriate position.

  As a result, it is possible to reliably prevent leakage and the like due to the displacement in the wearing state of the disposable absorbent article.

  Further, by providing the knob portion 15 on the front side portion 11, the absorption area at the central portion 13 located near the urination portion of the wearer at the time of wearing is not reduced.

  Further, by joining the flap sheet 16 to the flap portion 5, the knob portion 15 is reliably formed by the flap sheet 16, and the flap sheet 16 is positioned on the body side of the wearer when worn with respect to the knob portion 15. Therefore, the knob portion 15 does not directly contact the wearer by the flap sheet 16, and the wearing feeling is improved.

In the first reference technique , as in the second reference technique shown in FIGS. 3 (a) and 3 (b), the flap sheet 16 is formed of an elastic member that can be expanded and contracted in the width direction. While the flap sheet 16 is stretched in the width direction, both side portions are joined to the flap portion 5 to form side end flap portions 19 and 19, and an intermediate portion between both sides is not joined to the flap portion 5. It is also possible to do. In this case, the flap portion 5 which is an intermediate portion between the side end flap portions 19 and 19 and to which the flap sheet 16 is not joined is contracted in the width direction of the flap sheet 16 to the liquid-impermeable back sheet 3 side. Since the knob portion 15 is formed by folding back, the knob portion 15 can be easily formed by simply joining both side portions of the flap sheet 16 to the flap portion 5 without previously folding the flap portion 5.

Moreover, you may join the flap sheet | seat 16 to the flap part 5 over the whole width direction like the 3rd reference technique shown in FIG. 4 and FIG. In this case, since both side walls 15a and 15b of the knob 15 protrude so as to be adjacent to each other, the knob 15 can be more easily picked.

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

In the disposable absorbent article according to the fourth reference technique , the front end portion of the flap sheet 16 is located at the front end portion of the absorbent article main body 1 and joined to the flap portion 5 across the width direction. The end portions are not extended to the portion where the absorbent body 4 is located and are not joined to the absorbent article main body 1, and both side portions in the width direction of the flap sheet 16 are the flap portion 5 and the liquid-permeable surface sheet 2. It is joined to both.

  That is, the flap sheet 16 is formed with a side-end flap portion 19 having a reverse concave shape in plan view continuous from the front end portion located on the flap portion 5 to both sides, and other than the side end flap portion 19 of the flap sheet 16. This part is a non-joined part that is not joined to the absorbent article body 1.

  For this reason, the knob | pick part 15 protrudes so that both side wall 15a, 15b may adjoin, and the space part 21 is formed between the rear-end part of the flap sheet 16, and the absorbent article main body 1, as shown in FIG. Is done.

And the both sides of the width direction of the flap sheet 16 are joined to the flap part 5 in a state of being folded back in the vicinity of the center in the width direction so as to protrude toward the liquid-impermeable back sheet 3 side, and the knob part 15 is attached to the absorbent article main body. By forming along substantially the center in the width direction of 1, it is possible to achieve the same effects as the first reference technique .

  Moreover, since the space part 21 is formed between the rear-end part of the flap sheet 16, and the absorbent article main body 1, the excretion etc. from a wearer can be accommodated in this space part 21. FIG.

In the fourth reference technique , an elastic member may be disposed along the width direction at the rear end of the flap sheet 16. In this case, due to the contraction of the elastic member, the space portion 21 is easily formed in the portion of the flap sheet 16 that is not joined to the absorbent article body 1 and the three-dimensional shape around the space portion 21 is maintained. , Improve usability.

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

Disposable absorbent articles of this one embodiment, the disposable absorbent article of the fourth reference technology, both widthwise side portions of the absorbent article main body 1, a pair of barrier cuffs 23, 24 as the cuff respectively It is what is joined.

  The barrier cuffs 23 and 24 are each formed in a longitudinal shape along the longitudinal direction of the absorbent article body 1. The barrier cuff 23 is formed in a free end shape in which the left side portion shown in FIG. 8 is joined to the left side portion of the absorbent article main body 1, the right side portion is folded back, and the elastic member 25 is disposed inside. Similarly, the barrier cuff 24 is formed in a free end shape in which the right side portion shown in FIG. 8 is joined to the right side portion of the absorbent article body 1 and the left side portion is provided with the elastic member 26. The barrier cuffs 23 and 24 are separated from each other in the width direction of the absorbent article body 1 at the free ends. Further, both end portions in the longitudinal direction of the barrier cuffs 23 and 24 are respectively joined to both end portions in the longitudinal direction of the liquid-permeable surface sheet 2.

  The elastic members 25 and 26 are elastic members such as rubber thread, for example. The elastic members 25 and 26 are arranged in a state where they are continuous between both ends in the longitudinal direction of the absorber 4 and extended in the longitudinal direction. For this reason, the contraction force of the elastic members 25 and 26 acts on the joint portions at both ends in the longitudinal direction of the barrier cuffs 23 and 24 so that each barrier cuff 23 and 24 rises in a three-dimensional shape, particularly at the central portion 13. It is configured.

  Further, as shown in FIGS. 9 and 10, the flap sheet 16 is joined at the front end side to the flap portion 5 and the barrier cuffs 23 and 24, respectively, and as shown in FIG. The side is bonded to the barrier cuffs 23 and 24 and is not bonded to the absorbent article body 1. Therefore, the flap sheet 16 and the barrier cuffs 23 and 24 are not joined to the absorbent article main body 1 at the rear end portion of the flap sheet 16.

And the both sides of the width direction of the flap sheet 16 are joined to the flap part 5 in a state of being folded back in the vicinity of the center in the width direction so as to protrude toward the liquid-impermeable back sheet 3 side, and the knob part 15 is attached to the absorbent article main body. By forming along substantially the center of 1 width direction, the effect similar to each said reference technique can be show | played.

  Moreover, each side part of the barrier cuffs 23 and 24 is joined to each of the width direction both side parts of the absorbent article main body 1, and each other side part in which the elastic members 25 and 26 are disposed is a free end. Thus, not only can excrement etc. be accommodated in the space portion 21, but also the barrier cuffs 23, 24 can prevent leakage in both directions, and the contraction force of the elastic members 25, 26 can cause both ends of the barrier cuffs 23, 24 in the longitudinal direction. By acting on the joint portion, the front portion 11 that is the knob portion 15 side in particular has a three-dimensional shape, and adhesion to the wearer can be improved.

  Furthermore, since the barrier cuffs 23, 24 and the absorbent article body 1 are not joined at the portion where the flap sheet 16 and the barrier cuffs 23, 24 are joined, the barrier cuff 23, 24 becomes a three-dimensional shape, making it easier to stand up and improving the adhesion to the wearer.

Incidentally, in the embodiment described above, the flap sheets 16, like the flap sheet 16 of the first reference technology, the side portions located in the flap portion 5 is to such as joined to the flap portion 5 Is also possible.

Further, in the above you facilities, in the left-right width direction central portion of the flap sheets 16, it is also possible to provide the cutting line, such as for example perforations along the longitudinal direction. In this case, for example, the disposable absorbent article is used by forming the knobs 15 in advance at both ends in the longitudinal direction of the absorbent article body 1, that is, both the front part 11 and the rear part 14. In the case of the unused picking part 15, the flap sheet 16 can be cut from the cutting line to eliminate the picking part 15, that is, at least one of the picking parts 15 can be selected and used, and the usability is further improved. To do.

Furthermore, the disposable absorbent article includes, for example, a pants-type diaper used as an outer, a deployment-type diaper, or a pad-type diaper used as an inner when an outer or underwear is worn. Although not particularly, pad type diaper not determined that the mounting position as the outer, it is not easy to be mounted at the optimal position, because it may cause leakage by misalignment on you facilities It is effective to form the knob 15 or the like of the form.

It is an expansion | deployment top view which notches and shows the disposable absorbent article of the 1st reference technique of this invention. It is II sectional drawing of FIG. (a) is a development plan view showing the state before the formation of the knob part of the main part of the second reference technology of the disposable absorbent article same as above, (b) is the development showing the state after the formation of the knob part of the main part of the same It is a top view. It is an expansion | deployment top view which notches and shows the 3rd reference technique of a disposable absorbent article same as the above. It is II-II sectional drawing of FIG. It is an expansion | deployment top view which shows the principal part of the disposable absorbent article of the 4th reference technique of this invention. It is III-III sectional drawing of FIG. It is an expansion | deployment top view which shows the principal part of the disposable absorbent article of one embodiment of this invention. It is IV-IV sectional drawing of FIG. It is VV sectional drawing of FIG.

DESCRIPTION OF SYMBOLS 1 Absorbent article main body 2 Liquid-permeable surface sheet 3 Liquid-impermeable back sheet 4 Absorber 5 Flap part
11 Front part
13 Center part
14 Rear part
15 Pick section
16 flap sheet
23, 24 Barrier cuff as cuff part
25, 26 Elastic member

Claims (3)

It has a liquid-permeable surface sheet, a liquid-impervious back sheet, and an absorbent body disposed between the liquid-permeable surface sheet and the liquid-impervious back sheet, and has both sides in the width direction and both ends in the longitudinal direction. And an absorbent article body in which a front part, a central part and a rear part are sequentially formed in the longitudinal direction,
At the both ends in the longitudinal direction of the absorbent article main body, a flap portion extending outward from at least both longitudinal edges of the absorbent body;
In the flap part located in either one of the front part and the rear part, a knob formed along substantially the center in the width direction of the absorbent article main body,
A pair of cuff portions each having one end bonded to each of both sides in the width direction of the absorbent article main body and each other side having a free end in which an elastic member is disposed;
The knob is formed by joining at least a part of both side portions in the width direction in a state where the absorbent article main body is folded back in the vicinity of the center in the width direction so as to protrude toward the liquid-impervious back sheet side. A flap sheet forming a portion ,
The disposable absorbent article , wherein the flap sheet is joined to the flap portion and the pair of cuff portions . The flap sheet
One end part in the longitudinal direction is located in the vicinity of one end part in the longitudinal direction of the absorbent article main body and joined to the flap part over the width direction,
The other end side in the longitudinal direction is not joined to the absorbent article main body extending to the portion where the absorbent body is located,
The disposable absorbent article according to claim 1, wherein both side portions in the width direction are joined to at least one of the flap portion and the liquid-permeable surface sheet . The flap sheet is formed of an elastic member that can be expanded and contracted in the width direction, and in an expanded state, both side portions are joined to the flap portion and an intermediate portion between both sides is not joined to the flap portion,
The disposable absorbent article according to claim 1 or 2 , wherein the knob is formed by the intermediate portion by shrinking the flap sheet.

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