JP6245555B2 - Absorbent articles - Google Patents

Description

  The present invention relates to an absorbent article that is used supplementarily with basic absorbent articles such as a pad type, a tape type, and a pants type.

  In addition to basic absorbent articles (also called outer) such as pad type, tape type, and pants type, excrement absorbent articles (diapers) for adults are expected to be used in combination with these. Auxiliary absorbent articles called types (also called inners) are provided, and combinations of these are widely used, particularly in care settings such as care facilities.

  In particular, when the wearer is a male, the urination position changes depending on the position of the penis, so there is a problem that leakage from around the leg is likely to occur, and in order to solve this problem at the nursing care site, a flat type auxiliary absorbent Using an article, make both sides in the width direction bellows, and arrange the penis between the bellows-like parts, so that the gap generated in the root groove of both legs from the groin to the crotch is filled, or conical In such a case, it is rolled up into a penis and wound around the penis (hereinafter also referred to as male winding) (see, for example, Patent Documents 1 and 2).

  In such a mounting form, it is necessary to fold or round the absorbent article, but the absorbent article has a certain degree of rigidity because it has a built-in absorber, and has a desired shape. It is not easy to deform and maintain the shape. In order to solve this problem, as described in Patent Documents 3 and 4, it has been proposed to form linear easy-bending portions at intervals in the longitudinal direction by embossing or the like.

Japanese Patent Laid-Open No. 2006-212453 JP 2001-129002 A JP 2009-178235 A JP 2012-205792 A

  However, the conventional easy-bending portion is for making the absorbent article into a bellows shape or a roll shape, and has not been proposed for facilitating male winding.

  Then, the main subject of this invention is providing the absorbent article which can be easily deform | transformed into a male roll and is excellent in the shape maintenance property.

The present invention that has solved the above problems is as follows.
<Invention of Claim 1>
In an absorbent article comprising an absorber, a liquid-permeable top sheet covering the front side of the absorber, and a back sheet covering the back side of the absorber,
It has a rectangular shape in the unfolded state,
Three or more linear easy-bending portions extend at least on one side in the longitudinal direction along a radial direction having a center at the longitudinal center portion of the edge portion along the longitudinal direction, and adjacent easy-to-advance portions in these easy-folding portions. The smaller the acute angle crossing angle formed by the bent portion, the smaller the acute angle crossing angle formed by the bisector of the angle and the longitudinal direction ,
An absorbent article characterized by the above.

(Function and effect)
In the absorbent article according to the present invention, a bottomless pyramid having a side ridge as a side ridge is obtained by winding (rounding) a cone with the radiation center of the easily bent portion as the center (vertex). It can be easily transformed into a male-shaped male winding, and the low-restorability of the easy-folding part makes it excellent in the shape maintenance of the male winding.
The “easy-folding part” means a part that is easier to bend than the other part with the part as a folding position, and has a lower restoration property than the other part. Further, “the linear easy-bending portion extends along the radial direction” not only extends in all directions (center angle range of 0 to 360 degrees) based on the center, but also in a predetermined center angle range. It also means extending to.

Moreover, by setting it as such a form, not only can winding length be ensured enough, but when deform | transforming into a male winding shape by hand, a deformation | transformation operation | work is easy to do.
In addition, "the acute angle crossing angle formed by the adjacent easy bending portions in the easy bending portion is smaller as the acute angle crossing angle formed by the bisector of the corner and the longitudinal direction is smaller", if necessary. It is to narrow the space | interval of an easily bend | folding part, so that it will be located outside when it is made male. When a rectangular absorbent article is wound in a conical shape with the center in the longitudinal direction of the edge along the longitudinal direction as the center (vertex), the inner part is pressed by the outer side in the overlapping part, but the outer side is wound. However, if the interval between the easy-bending parts is narrowed as the part located on the outside in this manner, the restoring force of the part located on the outside is weakened, so that it is difficult to cause collapse.

<Invention of Claim 2 >
As the linear easily bendable portion, a first group along a radial direction having a center at an edge portion along one longitudinal direction, and a second group along a radial direction having a center at an edge portion along the other longitudinal direction. and a group, the absorbent article of claim 1, wherein.

(Function and effect)
If a group of easy-bending parts along the radial direction is provided on the opposite edge parts, it can be transformed into a male roll using the easy-bending part of either group without changing the direction of the absorbent article. Good workability.

  In addition, when a rectangular absorbent article is wound in a conical shape with the center in the longitudinal direction of the edge along the longitudinal direction as the center (vertex), both corners of the edge opposite to the vertex side protrude, but the weight It is possible to reduce or eliminate protrusions by bending the corners at the easy-bending portions of the group that is not used for winding. Moreover, at this time, the corners are folded inward or outward to sandwich the portion to be wound, so that protrusion of the corners can be reduced or eliminated and collapse can be prevented.

<Invention of Claim 3 >
Has a flap portion having no absorbent member around the absorbent body, the radial center of the easy bending portion is positioned at the peripheral edge at the same position or inside thereof of the absorbent body, according to claim 1 or 2, wherein Absorbent articles.

(Function and effect)
In this type of absorbent article, a structure having a flap portion without an absorber around the absorber is common, and there are advantages such as easy manufacture. When the center in the radial direction is located outside the peripheral edge of the absorber, the tip (top) becomes a portion without the absorber when a conical male winding is used. Therefore, when it has a flap part, the radial center of the easy-bend part is located at the same position as or inside the periphery of the absorber, and even in a state of being wound around a man, it is close to the tip part or completely to the tip part. It is desirable to exist.

  As described above, according to the present invention, advantages such as being easily deformed into a male roll and being excellent in its shape maintainability are brought about.

It is a top view which shows the surface side of the expansion | deployment state of an absorbent article. It is a top view which shows the back surface side of the expansion | deployment state of an absorbent article. It is XX sectional drawing of FIG. It is a top view which shows a product state roughly. It is the schematic which shows the deformation | transformation step to elastic winding. It is the schematic which shows the deformation | transformation step to elastic winding. It is the schematic which shows the deformation | transformation step to elastic winding. It is the schematic which shows the deformation | transformation step to elastic winding. It is the schematic which shows the deformation | transformation step to elastic winding. It is the schematic which shows the deformation completion state of an elastic winding. It is the schematic which shows the deformation completion state of an elastic winding. It is a top view which shows the surface side of the expansion | deployment state of the absorbent article of another form. It is a top view which shows the surface side of the expansion | deployment state of the absorbent article of another form. It is a top view which shows the surface side of the expansion | deployment state of the absorbent article of another form. It is a top view which shows the surface side of the expansion | deployment state of the absorbent article of another form. It is a top view which shows the surface side of the expansion | deployment state of the absorbent article of another form.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
1-3 have shown the absorbent article 10 used auxiliary with basic absorbent articles, such as a tape type and a pants type. The absorbent article 10 includes an integral absorbent body 3, a liquid-permeable top sheet 2 that covers the surface of the absorbent body 3, and a liquid-permeable back sheet 1 that covers the back surface of the absorbent body 3. It is substantially flat in the unfolded state, and is absorbed from both the front and back surfaces of the absorbent article. In addition, the dot pattern part in a figure has shown the junction part by joining means, such as a hot-melt-adhesive.

  As the top sheet 2 and the back sheet 1, a perforated or non-porous nonwoven fabric or a perforated plastic sheet is used. When using a nonwoven fabric, the fiber is not particularly limited. In addition to synthetic fibers such as polyethylene or polypropylene such as olefins, polyesters, and amides, recycled fibers such as rayon and cupra, and natural fibers such as cotton can be used. The manufacturing method is not particularly limited, and a nonwoven fabric obtained by an appropriate processing method such as a spunlace method, a spunbond method, a thermal bond method, a melt blown method, a needle punch method, or the like can be used. Among these processing methods, the spunlace method is excellent in terms of flexibility and drapeability, and the thermal bond method is excellent in terms of being bulky and soft. When a plastic sheet in which a large number of through holes are formed in the top sheet 2 and the back sheet 1 is used, urine and the like are quickly absorbed, and the dry touch property is excellent. A liquid-impermeable sheet can also be used as the back sheet. In that case, absorption is performed only from the surface of the absorber, and absorption from the back side and transmission of the liquid to the back side do not occur.

  In the illustrated example, the top sheet 2 and the back sheet 1 are joined to a portion protruding from the periphery of the absorbent body 3, so that the flap portion 4 not having the absorbent body 3 is formed, but either one of the sheets is absorbed. It can also be set as the structure which does not have the flap part 4 in a part or all of circumference | surroundings by extending so that the peripheral part of the body 3 may be wound.

As the absorbent body 3, it is possible to use a laminate of pulp fibers, an aggregate of filaments such as cellulose acetate, or a nonwoven fabric, and a mixture obtained by mixing and fixing a superabsorbent polymer as necessary. . The absorbent body 3 can be packaged with a packaging sheet (not shown) having liquid permeability and liquid retention, such as crepe paper, if necessary, for holding the shape and polymer. The shape of the absorber 3 can be an appropriate shape in addition to a rectangular shape as illustrated. The fiber basis weight and the basis weight of the absorbent polymer in the absorbent body 3 can be appropriately determined. The fiber basis weight is preferably about 250 to 500 g / m ^2, and the basis weight of the absorbent polymer is about 50 to 250 g / m ^2. Is preferable.

  The size and shape of the absorbent article 10 can be determined as appropriate, but in the normal case, the width W (length in the longitudinal direction) in the deployed state is preferably about 350 to 550 mm, and the length in the front-rear direction in the deployed state. L is preferably about 135 to 240 mm, and is preferably a horizontally long shape having a width W longer than the length L in the front-rear direction.

  Characteristically, linear easy-bending parts 5 and 6 extend along the radial direction having the centers 5c and 6c at the peripheral part of the absorbent article 10, and are indicated by two-dot chain arrows in order in FIGS. As shown in the figure, when the easy folding part 5 is wound (rounded) in the shape of a cone with the radial center 5c as the center (vertex), the easy folding part 5 has no side ridges due to the stepwise bending in the easy folding part 5. It can be easily transformed into a base pyramid-shaped male winding. At this time, the workability and the shape maintaining property after the deformation are also excellent due to the low recoverability of the easily bent portion 5. In FIGS. 4 to 11, one easy-bend portion 5, 6 is simply indicated by one thick line, but the width of the easy-fold portion 5, 6 can be seen in other plan views. One easy-bend portion 5, 6 is shown by two dotted lines.

  As described above, the easy-bending parts 5 and 6 are easy to bend with the part being the folding position as compared with the other parts, and the restorability after the folding is lower than the other parts. In addition to the recesses formed by embossing as described above, slits (extracted) formed in the absorber 3 can be used, or folds (not shown) that are bent in advance can be used. In the case of forming the easily bent portions 5 and 6 by embossing as in the illustrated embodiment, as shown in FIG. 3A, on the front surface (top sheet 2 in the illustrated embodiment) and on the back surface (in the illustrated embodiment, the back surface). In addition to embossing so as to be recessed from the sheet 1) to the absorbent body 3, as shown in FIG. 3B, the absorbent body 3 may be embossed in a state of being wrapped with a packaging sheet. Moreover, as shown in FIG.3 (c), embossing can also be given so that a recessed part may be formed only in any one side of a front side and a back side.

  The shape of the absorbent article 10 is a rectangular shape in the unfolded state as shown in the figure, and the linear easy-bend parts 5 and 6 have a center in the longitudinal center part of the edge part along the longitudinal direction. When extending along the radial direction, not only can the winding length be secured sufficiently, but also the advantage that it is easy to carry out deformation work when deformed into a male winding shape by hand, and that it is difficult to produce waste materials during production. It is.

  Although the distance from the periphery of the radial direction center 5c, 6c of the easy bending parts 5 and 6 extending in the radial direction is not particularly limited, considering the ease of winding, as shown in FIG. 2 and FIG. It is preferable to be located at the periphery (distance zero). However, when it has the flap part 4 which does not have the absorber 3 around the absorber 3 like the form of illustration, the radial direction centers 5c and 6c of the easily bendable parts 5 and 6 are outside the periphery of the absorber 3. If it is located, the tip (top) becomes a portion without the absorber 3 when it is a conical male winding. Therefore, as shown in FIGS. 13 and 14, when the flap portion 4 is provided, the radial centers 5 c and 6 c of the easily bendable portions 5 and 6 are located at the same position as the peripheral edge of the absorber 3 (or inside thereof). It is also a preferable form that the absorbent body 3 is present to the vicinity of the distal end portion or completely to the distal end portion even in the state of being positioned and male-wound.

  Since the easy-bending portions 5 and 6 extend along the radial direction, a predetermined central angle range θ (for example, 90 to 180 degrees in the case of a rectangle) as shown in FIGS. 2, 12, and 13. 14, and a configuration (not shown) extending in all directions (in the range of the central angle θ = 0 to 360 degrees) with respect to the centers 5c and 6c as shown in FIG.

  Although the easy bending parts 5 and 6 may be extended to the peripheral part of the absorbent article 10 as shown in FIG. 12, since diffusion of excrement is promoted along the easy bending parts 5 and 6, As shown in FIG. 2 and FIG. 13, it is desirable to be within a range overlapping the absorber 3.

  In the case of the rectangular absorbent article 10, as shown in the figure, at least three on one side in the longitudinal direction along the radial direction having the centers 5c and 6c at the longitudinal center of the edge along the longitudinal direction. The above linear easy-bending parts 5 and 6 are provided. Moreover, the center 5c, 6c is made common, and the angle interval (acute angle side crossing angle γ, see FIG. 2) between the adjacent easy-bending portions 5, 6 can be determined as appropriate, for example, about 5 to 45 degrees. Can do. Further, as shown in the illustrated embodiment, the acute angle side crossing angle γ is gradually decreased so that the interval between the easy-bending portions 5 and 6 becomes narrower in the portion that is positioned outside when the male winding is performed, as shown in the figure. ((The smaller the acute angle crossing angle formed by the bisector of the acute angle crossing angle and the longitudinal direction, the smaller the smaller). The rectangular absorbent article 10 is centered on the longitudinal center of the edge along the longitudinal direction. 5c, 6c (vertex), when wound in a conical shape, the inner part is pressed by the outside, but the outer part is not wound, so it is easy to bend by the restoring force. When the interval between the easy-bending parts 5 and 6 is narrowed as the part becomes, the restoring force of the part located on the outside becomes weak, so that it is difficult for the collapse to occur.

  In the illustrated embodiment, the linear easy-bend parts 5 and 6 are centered on the first group along the radial direction having the center 5c at the edge along one longitudinal direction and at the edge along the other longitudinal direction. And a second group along the radial direction having 6c. As described above, when the groups 5 and 6 of the easy-bending portions along the radial direction are provided on the opposing edges, the easy-bending portions 5 and 6 of either group are used without changing the direction of the absorbent article 10. Since it can be transformed into a male roll, workability is improved.

  Moreover, when the rectangular absorbent article 10 is wound in a conical shape with the longitudinal center portion of the edge portion along the longitudinal direction as the centers 5c and 6c (vertex), the edge portion opposite to the vertex side as shown in FIG. Both corners protrude. Since these corners may interfere with the wearing, one corner located inside is folded outwardly as shown in FIGS. 8 and 9, and the other corner located outside is shown in FIG. As shown, it is preferable to fold inward and pinch the overlapping portions to reduce or eliminate protrusions at the corners and prevent collapse. At this time, as shown in the figure, if not only the first group of easy bending portions 5 but also the second group of easy bending portions 6 are provided, the group that is not used when winding in a weight shape, that is, In the illustrated embodiment, there is an advantage that the second group of easy-folding portions 6 can be used when bending both corner portions protruding after being wound in a weight shape. Of course, as shown in FIG. 14, the group of the easy-bend portions 5 that share the radial center 5 c may be only one.

<Others>
As shown in FIG. 15, not only the easy bending portions 5 and 6 along the radial direction but also a plurality of easy bending portions 7 along the front-rear direction are provided at intervals in the longitudinal direction so that it can cope with bellows-like bending. As shown in FIG. 16, easy-to-bend portions 8 along the longitudinal direction are provided at intervals in the front-rear direction, and although not shown, both the easy-to-bend portions along the front-rear direction and the easy-to-bend portions along the longitudinal direction. It can also be set as the form which provided.

  The present invention is suitable for auxiliary absorbent articles used in combination with basic absorbent articles such as pad type, tape type, pants type, etc., but by using a liquid-impermeable sheet as a back sheet, It can also be used as an absorbent article.

  DESCRIPTION OF SYMBOLS 1 ... Back sheet, 2 ... Top sheet, 3 ... Absorber, 4 ... Flap part, 10 ... Absorbent article, 5, 6 ... Easy bending part, 5c, 6c ... Center.

Claims (3)

In an absorbent article comprising an absorber, a liquid-permeable top sheet covering the front side of the absorber, and a back sheet covering the back side of the absorber,
It has a rectangular shape in the unfolded state,
Three or more linear easy-bending portions extend at least on one side in the longitudinal direction along a radial direction having a center at the longitudinal center portion of the edge portion along the longitudinal direction, and adjacent easy-to-advance portions in these easy-folding portions. The smaller the acute angle crossing angle formed by the bent portion, the smaller the acute angle crossing angle formed by the bisector of the angle and the longitudinal direction ,
An absorbent article characterized by the above. As the linear easily bendable portion, a first group along a radial direction having a center at an edge portion along one longitudinal direction, and a second group along a radial direction having a center at an edge portion along the other longitudinal direction. and a group, the absorbent article of claim 1, wherein. Has a flap portion having no absorbent member around the absorbent body, the radial center of the easy bending portion is positioned at the peripheral edge at the same position or inside thereof of the absorbent body, according to claim 1 or 2, wherein Absorbent articles.

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