JP3166677U - Absorbent article and absorbent main body holding cover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an absorbent article having good elasticity, excellent fit to the skin, and high strength against peeling or breakage between members, and an absorbent main body holding cover. SOLUTION: The exterior body 6 is composed of an outer layer sheet 2 on the non-skin surface side and an inner layer sheet 1 on the skin surface side, and the absorbent body 8 is provided on the skin surface side of the exterior body. Make up the article. The exterior body is provided with a dorsal portion arranged on the dorsal side of the wearer, a ventral portion arranged on the ventral side, and a crotch portion 15 located between the dorsal portion and the ventral side when worn. Eh. In the exterior body, the flap portion 6u extending ventral or dorsally outward from the height-direction end of the absorber is an elastic member interposed between the inner layer sheet and the outer layer sheet at predetermined intervals. 3 and an exterior body joint portion 11 to which the two sheets are joined while avoiding the position of the elastic member, and the flap portion substantially has a portion corresponding to the elastic member on the outer surface thereof. It has a reinforcing material 5 arranged so as to avoid it. [Selection diagram] Fig. 1

Description

  The present invention relates to an absorbent article and an absorbent main body holding cover.

  In a diaper cover in which an absorbent article such as a disposable diaper or an absorbent pad is used on the skin surface side, gathers are widely formed to impart stretchability. This gather is composed of a large number of irregularly formed ridges formed by the sheet material refracted at the expansion and contraction part. Usually, the entire rubber thread is bonded to the sheet material in an expanded state, and the elastic member contracts to a natural shape. Is formed. The above-mentioned gathers are short and irregular in length perpendicular to the direction of expansion and contraction of the wrinkles, and are not very beautiful. Further, since the elastic member is fixed as a whole, the stretchability may not be sufficiently exhibited.

  In contrast, recently, an elastic composite sheet member has been developed that is configured such that an elastic body can expand and contract independently between the two sheets (see Patent Document 1, etc.). This creates a gather that is soft to the touch and beautiful to the eye.

  By the way, in a pants-type disposable diaper in which a body fit gather is formed around the wearer's lower abdomen, a laminate is disclosed in which the end of the absorbent body smaller than usual is covered with a nonwoven fabric or an apertured film. (See Patent Document 2). Thereby, it can hold down, without exposing an absorber edge part.

Japanese Patent Laid-Open No. 2005-080859 JP-A-8-280739

  Although the said patent document 1 is disclosing the tape fastening type | mold diaper using the elastic composite sheet member, it is specifically disclosed how the elastic composite sheet is arrange | positioned and fixed as a diaper member. Absent. According to the study of the present inventor, it has been found that a relatively strong force acts on the diaper when the diaper is operated or pulled up while wearing. This is particularly remarkable when the caregiver puts care pants on the care recipient who cannot move his body sufficiently, or when the guardian urges the infant to rush the pants-type diaper.

  In view of the above, an object of the present invention is to provide an absorbent article and an absorbent main body holding cover that have excellent stretchability, excellent fit to the skin, and high strength against peeling or breakage between members. .

  The above-described problem is an absorbent article that includes an exterior body that includes an outer layer sheet on the non-skin surface side and an inner layer sheet on the skin surface side, and has an absorbent body on the skin surface side of the exterior body. The exterior body includes a back side portion disposed on the wearer's back side when worn, an abdominal side portion disposed on the abdominal side, and a crotch portion positioned between the back side portion and the abdominal side portion. And a flap portion extending outward from the lengthwise end of the absorbent body on the abdomen side or the back side in the exterior body is interposed between the inner layer sheet and the outer layer sheet in parallel at a predetermined interval. And an outer body joint portion where the two sheets are joined to avoid the position of the elastic member, and the flap portion substantially includes a portion corresponding to the elastic member on the outer surface thereof. This has been solved by an absorbent article having a stiffener placed in an evasive manner.

  The absorbent article and the absorbent main body holding cover according to the present invention have excellent operational effects such as excellent stretchability, excellent fit to the skin, and high strength against peeling or breakage between members.

It is a perspective view showing a pants type disposable diaper as one embodiment (this embodiment 1) of an absorptive article of the present invention partially notching. It is the top view which expanded the diaper shown in FIG. 1, expanded the front body part, and was seen from the skin surface side. It is sectional drawing which expands and shows the III-III line cross section shown in FIG. It is the partial top view which looked at the diaper as another embodiment (Embodiment 2) of this invention from the skin surface side in the expansion | deployment state. It is the partial top view which looked at the diaper as another embodiment (Embodiment 3) of this invention from the skin surface side in the expansion | deployment state. It is the partial top view which looked at the diaper as another embodiment (Embodiment 4) of this invention from the skin surface side in the expansion | deployment state. It is the partial top view which looked at the diaper as another embodiment (Embodiment 5) of this invention from the skin surface side in the expansion | deployment state.

  Hereinafter, the absorbent article of this invention is demonstrated in detail, referring drawings for the preferable embodiment. FIG. 1 is a perspective view schematically showing a pant-type diaper as an embodiment (embodiment 1) of the absorbent article of the present invention with a part cut away in a state when a care recipient wears it. The diaper of Embodiment 1 has an exterior body 6 including an outer layer sheet 2 on the non-skin surface side and an inner layer sheet 1 on the skin surface side, along the diaper body height direction on the skin surface side of the exterior body. An absorbent body 8 having a longitudinal direction is arranged. A front / rear flap portion 6u is formed on a part of the exterior body on the outer side in the longitudinal direction of the absorbent body (hereinafter also simply referred to as “front and rear of the absorbent body”). In the present invention, the “absorber” refers to an absorptive structure that may be continuous with or independent from the front and rear flaps and can be at least divided into regions from the front and rear flaps. For example, it refers to an absorbent core itself containing a water-absorbing material such as an aggregate of hydrophilic fibers or a highly water-absorbing polymer, or a structure in which this is covered with hydrophilic fibers such as pulp, and at this time the liquid permeability constituting the flap portion This part is not included even if it is joined to the surface sheet or the liquid-impervious leak-proof sheet.

  In the diaper of Embodiment 1, a plurality of trunk elastic members 3 are arranged in the front and rear flaps 6u between the outer layer sheet 2 and the inner layer sheet 1 so as to extend in the waistline direction. The outer layer sheet 2 and the inner layer sheet 1 are joined by an exterior body joint portion 11 so as to avoid a position where the elastic member 3 is interposed, and the exterior body joint portion 11 is intermittently or continuously in the waistline direction. A plurality of joint rows 21 (see FIG. 2) are formed. As described above, in the diaper of the first embodiment, the two-layer sheet material is intermittently joined, and the elastic member is disposed so as to avoid the joint, and the elastic member can be expanded and contracted independently of the sheet material. A gathered structure having a cylindrical hole structure (hereinafter, this structure is referred to as an air gather structure, and a portion where the structure is disposed is referred to as an air gather structure section). Further, the leg portion 15 of the exterior body 6 has a leg opening portion s, and a leg elastic member 9 is arranged on this portion so that the wearer's thigh is properly tightened and fitted. The composite sheet having an air gather structure composed of the two-layer sheet material and the elastic member as described above is described in detail in Japanese Patent Application Laid-Open No. 2005-80859, and a pants-type diaper using this is particularly characterized. This is described in Japanese Patent Application No. 2006-338242 and Japanese Patent Application No. 2006-35555.

FIG. 2 is a plan view of the diaper shown in FIG. 1 expanded to enlarge a part of the abdominal side portion 14f and the crotch portion 15 and seen from the skin surface side. In other words, what is shown in the figure shows a diaper material. Although not shown in FIG. 2, in this embodiment, there is a dorsal side portion 14r having the same form as the ventral side portion 14 on the opposite side to the longitudinal direction (Y direction) of the ventral side portion 14f. A crotch portion 15 is disposed between the portion 14f and the back side portion 14r. The abdominal side portion 14f and the back side portion 14r extend outward in the width direction from the left and right end positions in the minimum width portion of the crotch 15, and have an hourglass shape as a whole of the exterior body 6. When this is assembled into the diaper shown in FIG. 1 (when the back side and the abdomen side are joined with a fastening tape in the case of a tape-type diaper), the abdomen side portion 14f and the back side portion 14r are integrated into the torso. The crotch part (leg part) 15 is arranged below the height direction of the part 14 (refer FIG. 1).
The body elastic member 3 and the leg elastic member 9 described above are arranged in an extended state on the outer body 6 having a substantially hourglass shape. At this time, in the first embodiment, the body elastic member 3 is fixed by the side seal portion 13 or the fixing portion 18. Except for these portions, the body elastic member 3 is not fixed to the inner layer sheet 1 and the outer layer sheet 2 and is disposed in the gap between the exterior body joint portions 11 so as to be stretchable. Although such a joining form is ideal, it is allowed that a part of the trunk elastic member 3 is fixed at a place other than the inner layer sheet 1 or the outer layer sheet 2 and the side seal part or the fixing part 18. The exterior body joint portion 11 that joins the inner layer sheet 1 and the outer layer sheet 2 can be formed by, for example, heat embossing. On the other hand, the entire leg elastic member 9 is sandwiched and fixed between the inner layer sheet 1 and the outer layer sheet 2. This diaper material is joined at the side seal part 13 and assembled into a pants-type diaper. At this time, the stretched body elastic member 3 and leg elastic member 9 are contracted into a natural shape, thereby forming a three-dimensional pant-type diaper 10 that is soft and rounded as a whole. And as a disposable diaper which has the waist opening part t and the leg opening part s shown in FIG. 1, it fits so that a wearer's torso and thigh may be tightened moderately at the time of wear.

  In the diaper 10 of the first embodiment, the inner layer sheet 1, the outer layer sheet 2, and the body elastic member 3 are configured to have the above-described specific structure, and thus the cylindrical hole structure portion 4 described above is many in the body portion 14. Further, a substantially circular opening end 17 is arranged on the periphery of the waist opening t (in the present invention, “substantially circular” is not only a perfect circle or an ellipse, but also a shape closed by a gentle curve). If there is a rectangle or rhombus, it will be used to mean. The cylindrical hole structure portion 4 is formed by generating a large number of wrinkles in the superimposed inner layer sheet 1 and outer layer sheet 2 when the elastic member 3 contracts. More specifically, the outer body joint portion 11 of the inner layer sheet and the outer layer sheet has a seal line (base) 22 extending in the height direction, and the inner layer sheet 1 is on the skin surface side and the outer layer sheet 2 is non-skin between the adjacent seal lines 22. A pair of ridges are formed so as to protrude to the surface side. A pair of ridges formed so as to project linearly in the opposite direction form the cylindrical hole structure portion 4 extending in the height direction. At this time, each bag can hold a cylindrical hole between the skin and the clothes. Then, since the bag moves freely without being constrained by the elastic member and the air enters and exits, it can be ventilated as if breathing from the opening end 17 or from the gap between the opening end 17 and the wearer or outer garment. The opening end 17 may be disposed on at least a part of the waist opening or the leg opening, but is preferably disposed on a part or all of the waist opening.

  In the diaper of the first embodiment, as described above, the inner layer sheet 1 and the outer layer sheet 2 are joined by the exterior body joining portion 11 so as to avoid the elastic member interposed between both sheets. More specifically, the body elastic member 3 is elongated, and a plurality of the body elastic members 3 are arranged in the body portion 14 in parallel with each other in the waistline direction. In the present invention, the “circumference direction” refers to the circumferential direction formed by the edge of the waist opening t when the diaper is worn (see FIG. 1). In terms of the diaper material that has been developed (see FIG. 2), the above-mentioned “trunk circumference direction” corresponds to the width direction (X direction).

  The form of the trunk | drum elastic member 3 is not specifically limited, In addition to making it a long elastic member like what was illustrated, the short elastic member is intermittently connected continuously etc. are mentioned. When a short elastic member is intermittently provided, the elastic part is joined to the outer layer sheet or the inner layer sheet at a part (for example, an end part), but it is preferable that most of the elastic parts are not joined to any sheet. . And in this Embodiment 1, the inner layer sheet 1 and the outer layer sheet 2 are joined by the exterior body joint part 11 arrange | positioned intermittently in the part in which the trunk | drum elastic member 3 is not arrange | positioned, for example, this exterior body joint It is preferable to arrange the portions 11 in an orthogonal lattice pattern or a staggered lattice pattern. In the present invention, an orthogonal lattice-like arrangement means that the exterior body joint portions 11 include a plurality of joint portion rows 21 parallel to each other, and the pitches of the exterior body joint portions 11 in the joint portion rows 21 substantially coincide with each other. Say. In other words, the substantially coincidence of the joint portion pitches means that when the exterior body joint portion 11 of each joint portion row 21 is projected in a direction orthogonal to the joint portion row 21, the projected image of each exterior body joint portion 11 is substantially the same. It means that there is an overlapping relationship at the same position. On the other hand, the staggered arrangement means an arrangement in which the exterior body joint portions 11 have a plurality of joint portion rows 21 parallel to each other, and the joint portions of each row are shifted in pitch. Here, the arrangement in which the pitches of the joint portions are shifted is, in other words, the projection images of the exterior body joint portions 11 when the exterior body joint portions 11 of each row are projected in a direction orthogonal to the joint portions 21. It is preferable that the projection images are arranged so that every other row of the joint rows 21 substantially coincides, and it is more preferable that the adjacent joint rows 21 are shifted by approximately a half pitch. In the arrangement of the orthogonal lattice and the staggered lattice described above, there may be a portion where the exterior body joint portion 11 is not appropriately provided in consideration of the function of the absorbent article.

  In the diaper 10 of the first embodiment, as described above, the body elastic member 3 is disposed in a non-joined portion where the exterior body joint portion 11 is not disposed, and the inner layer sheet 1 and the outer layer sheet 2 are different from each other. It can be expanded and contracted independently. Therefore, an excessive increase in rigidity can be prevented with respect to a normal gather obtained by integrally joining the sheet material and the elastic member, and flexible deformation of the heel is promoted with respect to an external force. Further, the volume is increased in the thickness direction of the sheet material, and the touch when touching the heel is soft and the touch is good.

  In the diaper 10 of the first embodiment, the body elastic member 3 is not disposed in the region where the absorbent body 8 is provided, and the front and rear flap sections 6u on the front and rear outer sides of the body length direction end 8a of the absorbent body 8. The body elastic member 3 is disposed on the body. Thus, in the diaper of the first embodiment, the air gather structure portion is disposed on the entire front and rear flap portions 6u avoiding the portion where the absorber 8 is located, but is disposed on a part of the front and rear flap portions 6u. It is preferable that the air gather structure part is disposed at least in the ventral trunk part central part and / or the dorsal trunk part central part which will be described later.

  A part of the body elastic member 3 may be disposed on left and right flap portions (not shown as regions) extending outward from the widthwise end 8b of the absorber. In the first embodiment, this portion of the body elastic member 3 is fixed by the fixing portion 18 and the side seal portion 13 so as not to overlap the absorber 8. Such a fixing portion 18 at the end of the elastic member can be formed, for example, by a method in which only the vicinity of the end of a short elastic member that does not cross the absorber is bonded with an adhesive such as hot melt. Alternatively, a treatment in which the elastic member does not substantially exhibit stretching stress in the region of the absorber 8, such as fixing the body elastic member 3 including the region where the absorber 8 is provided and then cutting the elastic member. You may give it. At that time, it is preferable that the body elastic member 3 is not fixed to the inner layer sheet 1 and the outer layer sheet 2 except for the side seal portion 13 and the fixing portion 18. As a result, the expansion and contraction inhibition caused by the body elastic member 3 being fixed to the two sheets is prevented, the fitting property and the slip-off preventing property are improved, and the absorbent body 8 exhibits good absorption performance regardless of wrinkles. it can.

  Although FIG. 2 shows the structure of the front and rear flap portions 6u of the diaper belly side portion 14f, it may be a structure in which the air gather structure portion illustrated in either or both of the belly side portion 14f and the back side portion 14r is reinforced. Good. Further, the structure of the ventral side portion 14f and the back side portion 14r may be different or the same. The reinforced air gather structure shown in FIG. 2 is applied not only to the ventral side portion 14f but also to the back side portion 14r so that the outer body 6, the elastic member 4, and the reinforcing member 5 can exert the entire circumference. Is preferred.

  As described above, the diaper of the present embodiment is provided with the breathable cylindrical hole structure portion 4 so as to comprehensively improve the function of the diaper. Specifically, there is no cylindrical hole structure portion 4 at the location where the liquid is concentrated and excreted, and the liquid absorbability of the absorber is not hindered. In addition, it is provided with a heel that becomes a soft flute shape that extends to the waist and hips where the touch and appearance are more important, and the elasticity of the entire article is improved by appropriate arrangement of elastic members. Excellent fit can be achieved. In addition, air enters and exits the cylindrical hole structure portion 4 through the open end 17, and good air permeability is obtained. As a result, the skin of the care recipient can be protected from being touched without being excessively tightened locally.

  In the diaper 10 of the first embodiment, the exterior body 6 has a reinforcing member 5 made of reinforcing strips 5a, 5b, 5c, 5d, and 5e arranged on the skin surface side. In the front and rear flap portions 6u of the exterior body 6, a portion corresponding to the trunk elastic member 3 is substantially disposed in a gap between at least one of the adjacent reinforcing members 5, whereby the reinforcing member 5 is Stretching inhibition due to the arrangement can be reduced, and good fit can be obtained. As a preferred embodiment, the reinforcing member 5 is not substantially disposed in a portion corresponding to the body elastic member 3 in the front-rear flap portion 6u of the exterior body 6, and is disposed in a portion corresponding to the joint row. Has been.

  This will be described in more detail with reference to FIG. 3 is an enlarged cross-sectional view taken along the line III-III shown in FIG. The cross section shown in FIG. 3 is shown as a cross section that crosses the exterior body joint portion 11 in the body height direction (sometimes referred to as the Y direction or the longitudinal direction). ) 22. In this cross-sectional position, the body elastic member 3 is not fixed to the inner layer sheet 1 and the outer layer sheet 2, but is capable of expanding and contracting independently of both sheets. In the outer front and rear flap portions 6u on the front and rear sides of the absorbent body 8, the body elastic members 3 and the exterior body joint portions 11 (joint portion rows 21) are alternately arranged, and portions corresponding to the body elastic members 3 respectively. It is divided into α and a portion β corresponding to the exterior body joint portion 11 (joint portion row 21). This section may be functional, and may be sectioned at or near the boundary line between the body elastic member 3 and the exterior body joint portion 11 (joint row 21). For example, the part α can be determined in consideration of the function of maintaining the stretchability of the body elastic member 3, while the part β does not substantially affect the expansion and contraction of the body elastic member 3 and increases the strength of the exterior body. It can be determined in consideration of the function to be maintained.

  In the first embodiment, the reinforcing strips 5a to 5e are not arranged in all or part of the part α, but are arranged in all or part of the part β, and these are functionally integrated. Thus, the reinforcing material 5 is formed. As a result, good elasticity of the elastic member 3 is maintained, and the front and rear flaps 6u exhibit high strength. In particular, the strength is preferably strong enough to resist the strong tensile force and piercing force applied to the flap portion when the caregiver puts the care pants on the care recipient who cannot move his / her body sufficiently. The reinforcing strips 5a to 5e are arranged in all the parts α, and particularly when joined to the exterior body 6, expansion / contraction inhibition may occur, and fit and slip-off prevention may be deteriorated. In such a case, for example, it is preferable to perform a hole opening treatment in which the hole area ratio of the reinforcing band members 5a to 5e is 3% or more in the portion α or in the vicinity thereof.

  A method for joining the reinforcing member 5 to the exterior body 6 is not particularly limited, but from the viewpoint of air permeability, the reinforcing member 5 can be joined by, for example, coating with an adhesive (hot melt) such as spiral spray or fiber spray. The distance between the reinforcing band members 5a to 5e in the first embodiment (distance in the Y direction of the part α, see FIG. 3) is not particularly limited, but is preferably less than 10 mm in consideration of damage due to finger insertion.

  Furthermore, in this Embodiment 1, since it is elastic without being restrained by the exterior body 6 except the both ends of the trunk | drum elastic member 3, the stretchability is maintained without impairing, and the good fit of a diaper Sex is realized. Further, the hole structure part 4 is closed or opened by a wearer's movement or the like, or a movement of deforming the heel of the exterior body 6 occurs, and the exterior body 6 exerts a ventilation action to stuffy the skin surface. Suppressed and smooth texture is realized. Moreover, in the diaper 10 of this Embodiment 1, since the reinforcement material 5 has been arrange | positioned to the skin surface side of the exterior body 6, the reinforcement material 5 does not affect the appearance at the time of wearing of a diaper, and in particular, it is many in the length direction. It is preferable in that the elegant and beautiful appearance peculiar to cocoons is maintained.

  In the present embodiment 1, the reinforcing material 5 (reinforcing band members 5a to 5e) is joined to the inner layer sheet 1 of the exterior body 6 at the reinforcing material joining portion 12 formed from the entire back surface of the sheet. In addition to the first embodiment, the width in the height direction (Y direction) of the reinforcing material joint 12 may be narrower than the width of each of the reinforcing band members 5a to 5e. Thus, by making the reinforcing material joint portion 12 narrower than each reinforcing band material, it is possible to more effectively maintain the favorable contractibility of the elastic member, for example, the air permeability of the exterior body is increased. Can be.

  In the diaper 10 of the first embodiment, one end portion of the reinforcing member 5 (specifically, a part of the reinforcing band member 5a) is not only on the front and rear flap portions 6u but also on the skin surface side of the front and rear end portions of the absorber 8. , And a portion thereof is disposed. By doing in this way, when the absorber 8 absorbs and holds a liquid etc., it is preferable at the point which can suppress effectively the leakage to the front-back direction (Y direction) of this liquid. Moreover, in the exterior body 6 of the part where the absorbent body 8 according to the first embodiment is arranged, a surface joint portion 19 is formed in which the inner layer sheet 1 and the outer layer sheet 2 are bonded by spiral spray, fiber spray, or the like. .

In the diaper 10 of the first embodiment, the reinforcing member 5 is approximately 3/4 line (auxiliary line H _3/4 ) obtained by dividing the front / rear flap portion 6u, specifically, the body portion 14 into four parts in the body height direction (Y direction). ) Is provided on the edge 6t side of the waist opening part from the slightly lower part, but it is preferable that the reinforcing material 5 is disposed at least at the center part of the abdomen side trunk part or the center part of the back side trunk part (see FIG. 2). . In the present invention, the “abdominal trunk central part” or the “back trunk central part” means the substantially central part of the trunk 14 in the ventral part 14f or the dorsal part 14r in the diaper 10 of the first embodiment. Specifically, in a developed diaper material (or a developed tape-type diaper), a region from a 1/4 line to a 3/4 line obtained by dividing the body portion 14 into the waistline direction (X direction), and the body A rectangular region (in other words, auxiliary lines W1 _{/ 4 to} W3 _{/ 4 in} FIG. 2) divided by a region from a 1/4 line to a 3/4 line obtained by dividing the portion 14 into four parts in the body height direction (Y direction). And a substantially rectangular region in the body portion 14 surrounded by H _{1/4 to} H _3/4 . However, in consideration of the function of the reinforcing material, it may not be somewhat rectangular or may deviate from the auxiliary line. In FIG. 2, the front body (abdominal side) 14f is shown, but the ratio of the dimensions (area distribution) is the same for the back body (back side) 14r.

  Nonwoven fabrics that are used as the material for the inner layer sheet 1 and the outer layer sheet 2 are nonwoven fabrics, woven fabrics, knitted fabrics, resins, and the like produced by various manufacturing methods such as air-through nonwoven fabric, heat roll nonwoven fabric, spunlace nonwoven fabric, spunbond nonwoven fabric, and meltblown nonwoven fabric, respectively. A film etc. are mentioned, The sheet | seat material etc. which these are laminated and integrated can be used. From the viewpoint of regularly arranging flexible ridges with good feel and giving a decorative aesthetic appearance, both sheet materials or one sheet material (especially skin when used for the purpose of bringing a composite elastic member into contact with the skin) The forming material of the sheet material forming the side surface is preferably an air-through nonwoven fabric, a heat roll nonwoven fabric, a spunlace nonwoven fabric, a spunbond nonwoven fabric, a melt blown nonwoven fabric, or the like.

  The exterior body joint portion 11 that joins the outer layer sheet 1 and the inner layer sheet 2 can be formed by heat embossing as described above. In this Embodiment 1, since the exterior body junction part 11 is provided intermittently, the adhesive agent usage-amount can be suppressed significantly. Moreover, since the number of materials can be reduced in the manufacturing process and the number of processing steps can be reduced, the manufacturing process can be made more efficient. Furthermore, since there are few hot melt parts, when it is set as a product, it can be excellent in air permeability and moisture permeability.

  The nonwoven fabric used as the material of the reinforcing material 5 is a core-sheath type made of a resin such as polyethylene or polypropylene, or the surface of which is made of the resin, from the viewpoint of strength, heat-fusibility, and leak-proof (hydrophobic) properties. A spunbond nonwoven is preferred. From the viewpoint of heat-fusibility, the reinforcing material 5 and the inner layer sheet 1 are preferably made of a non-woven fabric having the same composition (for example, both the sheets are spunbonded non-woven fabrics made of PET / PE composite fibers). More preferably, all of the outer layer sheets 2 are made of a nonwoven fabric having the same composition (for example, the three sheets are spunbond nonwoven fabrics made of PET / PE composite fibers, or only the outer layer sheet 2 is an air-through nonwoven fabric). The reinforcing material 5 may be formed by folding back the inner layer sheet 1 or the outer layer sheet 2 that has been subjected to slit processing or hole opening processing.

As a material of the elastic member, a normal elastic material used for an absorbent article can be used. For example, as a material, synthetic rubber such as styrene-butadiene, butadiene, isoprene, neoprene, natural rubber, EVA, stretchable polyolefin Polyurethane and the like can be mentioned, and the form thereof is such that the cross-section is rectangular, square, circular, polygonal or other thread-like or string-like (flat rubber etc.) or multifilament type thread-like it can.
It is.

  The inner layer sheet 1 and the outer layer sheet 2 that form the outer package 6 are not limited to those constituted by two separate sheets as in the first embodiment, but are formed by folding one sheet material and facing each other 2 It is also possible to form a surface, and configure a portion constituting one surface as an outer layer sheet and a portion constituting the other surface as an inner layer sheet. Moreover, you may provide a functional member and a structure part suitably between the inner layer sheet | seat 1 and the outer layer sheet | seat 2, and / or between both.

  In this Embodiment 1, it is preferable that the space | interval (distance of the part without a junction part) of the adjacent exterior body junction part 11 is 1-40 mm, and it is more preferable that it is 2-15 mm. The length in the body height direction of each exterior body joint portion 11 is preferably 0.5 to 20 mm, and more preferably 1 to 10 mm. The length (width) of each outer body joint portion 11 in the diaper waist direction is preferably 0.1 to 5 mm, and more preferably 0.2 to 1.5 mm.

  FIG. 4 is a partial plan view schematically showing a diaper 20 as another embodiment (Embodiment 2) of the present invention as viewed from the skin side in an unfolded state. That is, FIG. 4 is a diagram showing another embodiment of the upper right part of FIG. 2 corresponding to the first embodiment shown in FIG. Moreover, about the site | part enclosed with a part circle, it expands further and has shown typically the arrangement | positioning and shape of the pore 7 of a reinforcing material. In the diaper 20 of the second embodiment, in the unfolded diaper material, the reinforcing material 5 is in the form of one strip each of the abdomen side portion 14f and the back side portion 14r (however, when assembled into a diaper, the torso portion) It goes without saying that can be seen as the reinforcing material 5 that is integrated and continuously integrated).

  In the second embodiment, the reinforcing member 5 has an aperture region 5q having a large number of pores 7, and the aperture region 5q is located at a site where the body elastic member 3 of the flap portion 6u is disposed. ing. The reinforcing material 5 is configured to be divided into an aperture region 5q and a reinforcement region 5p having an aperture area ratio lower than the aperture region 5q or not having the pores 7. When the reinforcing region 5p does not have the pores 7 or has an aperture area ratio of 0.5% or less and does not substantially have the pores 7, the region is sometimes referred to as a non-open region. Here, the pore area ratio means a percentage obtained by introducing the total area of pores existing in a predetermined region in the pore region by the area of the predetermined region. The aperture region 5q is disposed without being joined to the exterior body 6 at a portion α (see FIG. 3) corresponding to the elastic member. On the other hand, the reinforcing region 5p is disposed so as to avoid the portion corresponding to the elastic member, in other words, bonded to the exterior body 6 at the portion β (see FIG. 3) corresponding to the bonding portion (row). By providing the reinforcing region 5p at the joint portion β between the inner layer sheet 1 and the outer layer sheet 2, the joint area between the reinforcing member 5 and the outer package 6 can be increased, and the joint strength can be improved. By improving the bonding strength between the reinforcing material 5 and the exterior body 6, it is possible to prevent the reinforcing material 5 from being peeled off from the exterior body 6 due to friction with the skin that is generated at the time of lifting.

  In the second embodiment, the hole region 5q of the reinforcing member 5 is disposed without being joined to the exterior body 6 at the portion α corresponding to the elastic member. It is included that the portion α is substantially avoided. That is, the opening region 5q means that the reinforcing material 5 is substantially the same as that in which the reinforcing material 5 is not disposed at the portion α corresponding to the elastic member, in view of the function of the reinforcing material 5 with respect to the exterior body 6. More specifically, since the aperture region 5q having a large number of pores 7 is arranged in a non-bonded state at the portion α corresponding to the elastic member, the aperture region 5q has a small reinforcing function as a reinforcing material, but is soft. Is maintained, and the deformation of the exterior body 6 is not constrained too much, so that it can be functionally equated with a material that is substantially not provided with a reinforcing material.

  The pores 7 in the open region 5q are not limited to a circular shape as illustrated, and may be a substantially elliptical shape, a star shape, or a rectangular basic pore shape. Moreover, the combination of a some shape may be sufficient. In the open region 5q, it is preferable that a large number of functionally close pores gather. Although the space | interval of each pore is not specifically limited, It is preferable that the distance of the center of each pore is less than 10 mm, and it is more preferable that it exists in the range of 2-8 mm. The boundary between the opening region 5q and the reinforcing region 5p may be a functional one. For example, the fact that it can be determined in consideration of the stretchability of the body elastic member 3 disposed on the exterior body, the strength of the exterior body, and the like is the same as in the case of the parts α and β described above. In FIG. 4, the boundary between the opening region 5q and the reinforcing region 5p is indicated by an auxiliary line (two-dotted line) extending in the waistline direction.

  As described above, in the second embodiment, in the region α corresponding to the position where the elastic member is interposed, the hole region 5p is arranged without being joined to the exterior body 6 in particular. The elasticity of 3 is maintained. Further, since the opening region and the reinforcing region of the reinforcing member 5 are in one band member in the front and rear flap portions 6u, and are continuous without being divided at each part (parts α and β) of the exterior body 6, While maintaining high strength, a good wearing feeling is realized by the above-described stretchability and ventilation action. In the opening region 5q, the plurality of pores 7 are arranged so that the body elastic member 3 and the pores 7 are surely overlapped even when the body elastic member 3 is displaced meandering back and forth in the height direction. It is preferable from the viewpoint of preventing stretch inhibition and improving fit and slip-off prevention.

Preferably but the area of the aperture 7 is not particularly limited is 1.0 to 7.0 mm ^2, more preferably 1.2~5.0mm ^2. The hole area ratio in the hole region 5q is not particularly limited, but it is 3% or more from the viewpoint of suppressing the function as the above-described reinforcing material and maintaining softness, and preventing breathing and tearing due to friction during lifting. Preferably, it is 5 to 25%. The hole area ratio of the reinforcing region 5p is not particularly limited, but from the viewpoint of increasing the bonding area between the reinforcing member 5 and the exterior body 6 and improving the bonding strength, the hole area ratio of the reinforcing region 5p is 2%. The following is preferable, and a non-open region is more preferable.

  Further, from the viewpoint of maintaining the stretchability of the body elastic member 3, it is preferable that the pores 7 overlap with the body elastic member 3 via the sheet in the opening region 5 q. In the present invention, a predetermined structural part or member overlaps with another structural part or member through “a sheet” means that each structural part is located on both sides of a predetermined sheet such as the inner layer sheet 1 or the outer layer sheet 2. It means that there is a member, and the structure portion or member has a portion overlapping when viewed in the thickness direction of the sheet. A part of each structure part or member may overlap, or all may overlap. “Overlapping” represents a positional relationship and does not represent the presence or absence of bonding.

[Pore area]
In the present invention, the “pore area” means a value measured by the following method unless otherwise specified.
A 3 cm × 3 cm square frame is drawn on a transparent plate (OHP sheet or the like) and placed on the scanning surface of a scanner (EPSON ES-9000H: trade name). A reinforcing material having pores 7 is stacked on the transparent plate so that the skin side faces the transparent plate, and a black mount is stacked on the non-skin side of the reinforcing material. Then, cover the scanner and record the image by color scan. The total pore area in the square is calculated from the recorded image data using image analysis software Image-Pro Plus (trade name) manufactured by Planetron Co., Ltd. At that time, it is configured to recognize a 1 mm ² or more as a pore (i.e. 1 mm ² below the opening is not the pores.). The area of the pores 7 is calculated by dividing the total aperture area by the number of pores contained in the square.

  FIG. 5 is a partial plan view schematically showing a diaper 30 as still another embodiment (Embodiment 3) of the present invention when viewed from the skin side in an unfolded state. FIG. 5 is a view showing the same diaper portion as FIG. 4 as another embodiment. Moreover, about the site | part enclosed with the circle, it further expands and has shown typically the arrangement | positioning relationship of the exterior body junction part 11 and the reinforcing material junction part 12. FIG. In this Embodiment 3, the said junction part row | line | column 21 which joins the outer layer sheet | seat 2 and the inner layer sheet | seat 1 consists of the some exterior body junction part 11 distribute | arranged intermittently. On the other hand, the reinforcing material 5 (reinforcing band members 5a to 5e) and the exterior body 6 are intermittently joined at a reinforcing material joining portion 12, and the reinforcing material joining portion 12 is connected to the exterior via a sheet. It exists in the position which overlaps with the body junction part 11. FIG. By adopting such a form, the stretchability of the body elastic member can be more effectively maintained, and the reinforcing action exhibited by the reinforcing material 5 can be exhibited. Is good. In Embodiment 3, since the reinforcing material is disposed on the skin surface side of the diaper and this portion is always in contact with the wearer's skin, it is particularly preferable to improve the touch.

  FIG. 6 is a partial plan view schematically showing a diaper 40 as still another embodiment (Embodiment 4) of the present invention when viewed from the skin side in the unfolded state. FIG. 6 is a diagram showing the same diaper portion as in FIGS. 4 and 5 as another embodiment. In the fourth embodiment, the exterior body joint portion 11 is formed continuously in the waistline direction to form a joint row 21. Even in such a form in which the outer layer sheet 1 and the inner layer sheet 2 are continuously joined, the waistline elastic member 3 is not fixed by the exterior body joint part 11 (joint part row 21) and can be stretched. ing. Thereby, the elasticity which the elastic member 3 has is maintained, and the favorable fitting property in the trunk | drum of a diaper is exhibited. On the other hand, the strength of the front and rear flap portions 6u of the exterior body 6 is increased by appropriately providing the reinforcing material 5 at a specific portion. As a result, the good feeling of wearing due to the good stretchability and the strength when pulling up the diaper are compatible.

  FIG. 7 is a partial plan view schematically showing a diaper 50 as still another embodiment (Embodiment 5) of the present invention when viewed from the skin side in the unfolded state. FIG. 7 is a diagram showing the same diaper portion as in FIGS. 4 to 6 as another embodiment. In the fifth embodiment, the reinforcing member 5 (reinforcing band members 5 a to 5 e) is joined and disposed on the outer side of the exterior body 6, that is, on the non-skin surface side of the outer layer sheet 2. Furthermore, in the fifth embodiment, it is preferable to apply a liquid leakage prevention sheet (not shown) to the end of the absorber 8 in order to suppress or prevent liquid leakage in the front-rear direction of the absorber 8. . In the fifth embodiment, since the reinforcing material 5 is arranged on the non-skin surface side of the exterior body 6 as described above, the strength can be increased without the reinforcing material 5 always touching the wearer's skin. A good wearing feeling can be realized more effectively.

  As another embodiment of the present invention, there is an exterior body including an outer layer sheet on the non-skin surface side and an inner layer sheet on the skin surface side, and an absorbent main body is disposed on the skin surface side of the exterior body. The absorptive main body holding cover used, wherein the exterior body is disposed on the back side of the wearer when worn, the abdominal side portion disposed on the abdominal side, and the back side portion and the abdominal side portion. A flap portion extending from the end in the height direction of the absorbent main body toward the outer side of the abdomen or the back side of the absorbent main body, the inner layer sheet and the outer layer sheet. An elastic member interposed in parallel with each other at a predetermined interval, and an exterior body joint portion where the two sheets are joined to avoid the position of the elastic member, and the flap portion has an outer surface In addition, the absorbent main body holding cap having a reinforcing member disposed substantially avoiding the portion corresponding to the elastic member. Chromatography, and the like. As described above, the absorbent main body holding cover has a reinforcing material in the abdomen or back flap part, and preferably the parts have a reinforced air gather structure in the first to fifth embodiments. Share with your diaper. That is, the absorbent main body holding cover of the present embodiment can be described as a form in which the absorbent body is removed from the diaper of the first to fifth embodiments.

  The absorbent main body holding cover of the present embodiment is used with the absorbent main body arranged on the skin surface side. The absorbent main body is not particularly limited as long as it absorbs excreted urine and the like, and examples thereof include an absorbent pad such as a urine collecting pad. The absorbent pad includes, for example, a liquid-permeable surface sheet, a liquid-impermeable leak-proof sheet, and a liquid-holding absorber interposed between the two sheets, and is formed in a vertically long shape that is rectangular in plan view. Can be mentioned. Preferably, a pair of left and right solid guards are formed on both sides of the absorbent pad in the longitudinal direction, and each solid guard is for forming a solid guard having a solid guard elastic member on both sides of the absorbent pad in the longitudinal direction. It is preferable that the sheet material is disposed. This absorbent pad is placed so that the longitudinal direction of the absorbent pad extends from the wearer's back to the abdomen, the liquid-permeable sheet side of the pad is in contact with the wearer's skin, and this is covered. It is preferable to wear an absorbent main body holding cover of the form. At this time, the absorptive main body holding cover of the present embodiment may be a tape stop type or a pants type.

  The absorbent article and the absorbent main body holding cover of the present invention may be for infants or for adults. Among these, an adult diaper is preferable from the viewpoint of the strength of the diaper. In addition, the absorbent article and the absorbent main body holding cover of the present invention may be, for example, a shorts-type napkin, a pants-type disposable diaper, or a tape-type disposable diaper, or a sanitary short, an incontinence pant, a diaper cover, etc. Good.

DESCRIPTION OF SYMBOLS 1 Inner layer sheet 2 Outer layer sheet 3 Body elastic member 4 Cylindrical hole structure 5 Reinforcing material 5a, 5b, 5c, 5d, 5e Reinforcing strip 5p Reinforcement region 5q Opening region 6 Exterior body 6t Edge of waist opening 6u Front and rear flaps 7 Pore 8 Absorber 8a Absorber height direction end 8b Absorber width direction end 9 Leg elastic member 10, 20, 30, 40, 50 Pants-type disposable diaper 11 Exterior body joint 12 Reinforcement joint Part 13 side seal part 14 trunk part 14f ventral part 14r dorsal part 15 leg part (inseam)
17 Opening end 18 Fixing part 19 of elastic member end part Surface joint part 21 Joint part row 22

Claims (9)

It has an exterior body that includes an outer layer sheet on the non-skin surface side and an inner layer sheet on the skin surface side, and is an absorbent article that includes an absorber on the skin surface side of the exterior body,
The exterior body has a back side portion disposed on the wearer's back side when worn, a ventral side portion disposed on the abdomen side, and a crotch portion located between the back side portion and the abdominal side portion. And
In the exterior body, a flap portion extending outward from the end in the height direction of the absorbent body on the abdomen side or the back side is an elastic member interposed in parallel between the inner layer sheet and the outer layer sheet at a predetermined interval. And an exterior body joint portion where the two sheets are joined to avoid the position of the elastic member, and the flap portion substantially avoids a portion corresponding to the elastic member on the outer surface thereof. Absorbent article having a stiffener disposed.   The absorptive article according to claim 1 in which said reinforcing material consists of a plurality of strips in parallel.   The absorbent article according to claim 1 or 2, wherein the reinforcing member has an aperture region having a large number of pores, and the aperture region is located at a portion where the elastic member of the flap portion is disposed.   The absorbent article according to claim 3, wherein the pores in the open region are located at positions where the elastic members overlap with the sheet.   The absorptive article according to any one of claims 1 to 4, wherein the reinforcing material joint portion where the reinforcing material and the flap portion are joined is located at a position overlapping the exterior body joint portion via a sheet.   The absorbent article according to any one of claims 1 to 5, wherein the reinforcing material is disposed on a skin surface side of the flap portion.   The absorbent article according to any one of claims 1 to 6, wherein the elastic member is disposed so as to extend in a waistline direction.   The absorbent article according to claim 7, wherein the reinforcing material is disposed at least in the middle part of the belly side trunk part or the central part of the back side trunk part of the diaper. An absorptive main body holding cover having an exterior body including an outer layer sheet on the non-skin surface side and an inner layer sheet on the skin surface side and using the absorptive body disposed on the skin surface side of the exterior body. And
The exterior body has a back side portion disposed on the wearer's back side when worn, a ventral side portion disposed on the abdomen side, and a crotch portion located between the back side portion and the abdominal side portion. And
In the outer package, an elastic member is disposed between the inner layer sheet and the outer layer sheet in parallel at a predetermined interval, and a flap portion extending outward from the end in the height direction of the absorbent main body to the abdomen or back side. And an exterior body joint portion where the two sheets are joined to avoid the position of the elastic member, and the flap portion substantially avoids a portion corresponding to the elastic member on the outer surface thereof. Absorbent body holding cover with stiffeners arranged.

Images