JP4912810B2 - Sanitary shorts - Google Patents

Description

  The present invention relates to a sanitary short having a function of fixing a rear part of a napkin having a long rear part such as a nighttime napkin or a nighttime napkin.

  Conventionally, sanitary shorts that are worn with absorbent articles such as sanitary napkins and panty liners are on the market. This sanitary short is different from ordinary shorts in that a waterproof cloth is provided from the crotch on the inner surface side to the hip side so that the attached body fluid can be easily removed.

  Currently, there are various types of sanitary napkins that are commercially available, such as daytime napkins, nighttime napkins, high-time napkins, and low-time napkins. In addition, in order to ensure the fixing to the shorts, many napkins are provided which are provided with wings on both sides, folded back so as to wrap around the crotch portion, and stuck on the outer surface side to suppress twisting and shifting.

  Various types of sanitary shorts have been proposed in which a winged napkin is stably mounted without causing lateral displacement.

  For example, in the following Patent Document 1, in a garment having a crotch part that is worn in contact with the skin, a second part for holding an absorbent article on the inner side surface of the elastic crotch part piece of the garment body. A crotch piece is provided, and the second crotch piece is attached to the clothing main body at the front and rear end edges thereof, and attached to the crotch piece of the clothing main body at least at a part of the central line portion. In addition, shorts having a crotch structure in which the left and right edges of the second crotch piece are in a free state in which the second crotch piece is not coupled to the clothing body have been proposed.

Further, in Patent Document 2 below, a crotch for attaching a napkin is provided inside a crotch part of a shorts, and the crotch cloth for attaching a napkin is narrower in width than a crotch part of a shorts. A pair of elastic cords, the pair of elastic cords being fixed along the longitudinal side edges of the crotch piece and extending from the rear end of the crotch piece, respectively. The front end of the crotch piece is fixed to the waist portion of the front body of the shorts together with the front ends of the pair of elastic cords, and the rear ends of the pair of elastic cords are There has been proposed a sanitary short which is fixed in the vicinity of both side edges of the waist.
JP 2001-55602 A JP-A-7-136214

  However, a napkin with a wing can be turned off by turning the wing around the crotch part and fastened to the outer surface, but the rear part, especially the night napkin and the napkin for many occasions, can be eliminated. In the case of a napkin with a long side, the position of the rear side is fixed only by adhesion with the main body displacement prevention adhesive. It was.

  Therefore, the main object of the present invention is to attach a sanitary short that can be fixed firmly without shifting or twisting the rear side when attaching a napkin having a long rear side such as a night napkin or a napkin for many times. It is to provide.

In order to solve the above-mentioned problem, the present invention according to claim 1, comprising a front body, a back body, and a crotch part connecting both of them, and a sanitary shorts worn in a state where an absorbent article is mounted,
Provided with a rear fixing means for fixing the rear side of the absorbent article, it said rear portion fastening means a shall provided to fix retaining the rear side of the absorbent article, one end of the sanitary panty leg is fixed to the opening edge, the other end Yes to a pair of left and right elastic string member fixed to the rear waist opening edge portion of the sanitary panty,
The elastic string member is provided with a male / female side fastener at the waist end, and is detachable from the female / male side fastener disposed along the waistline direction at the rear waist opening edge of the sanitary shorts. A sanitary short characterized by the above is provided.

  As described above in detail, according to the present invention, when mounting a napkin having a long rear side such as a night napkin or a long time napkin, the rear side can be fixed firmly without being displaced or twisted. As a result, it is possible to prevent body fluid leakage, improve the feeling of wearing because there is no misalignment or twist, and the rear part of the absorbent article can be firmly fixed, so that it is easy to wear when wearing shorts. Will come.

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

[Example structure of reference sanitary napkin 1]
1 is a development view of the sanitary napkin 1, FIG. 2 is a view taken along the line II-II in FIG. 1, and FIG. 3 is a view taken along the line III-III in FIG.

The sanitary napkin 1 is a so-called night napkin, which is a liquid-impervious back sheet 2 made of a polyethylene sheet or the like, a liquid-permeable top sheet 3 that quickly permeates menstrual blood, or the like, and both of these. Absorbent bodies 4 and 6 made of cotton-like pulp or synthetic pulp interposed between sheets 2 and 3, and crepe paper 5 surrounding the absorbent body 4 in order to maintain the shape of the absorbent body 4 and improve diffusibility. A pair of left and right three-dimensional gathers BS, BS provided with a substantially side edge portion of the absorbent body 4 as a standing base end and protruding at the surface side in a predetermined section in the front-rear direction so as to include at least a body fluid discharge portion In the periphery of the absorbent body 4, the outer edge portions of the liquid-impermeable back sheet 2 and the liquid-permeable top sheet 3 are formed by adhesives such as hot melt at the upper and lower end edges. heat The liquid impervious backsheet 2 that is bonded by an adhesive means such as a roll and extends laterally from the absorbent body 4 at both side edges, and the side nonwoven fabric 7 that forms the three-dimensional gather BS Are bonded by an adhesive such as hot melt or an adhesive means such as heat seal, and wing-like flaps W and W projecting sideways are formed by the laminated sheet portion of the liquid-impermeable back sheet 2 and the side nonwoven fabric 7. together are, this second wing-shaped flaps portion located buttocks side from W _B, is W _B are formed.

Hereinafter, the structure of the sanitary napkin 1 will be described in detail.
As the liquid-impervious backsheet 2, a sheet material having at least water shielding properties such as polyethylene is used, but in recent years, a material having moisture permeability tends to be used from the viewpoint of preventing stuffiness. The water- and moisture-permeable sheet material is a microporous material obtained by melting and kneading an inorganic filler in an olefin-based resin such as polyethylene or polypropylene to form a sheet, and then stretching in a uniaxial or biaxial direction. A sheet is preferably used. One or a plurality of main body displacement prevention adhesive layers (not shown) are formed on the non-use surface side (outer surface) of the liquid-impermeable back sheet 2, and the sanitary napkin 1 is used as an underwear when worn on the body. It is designed to be fixed. As the liquid-impermeable back sheet 2, a polylaminated nonwoven fabric in which a plastic film and a nonwoven fabric are laminated may be used.

  Next, the liquid-permeable top sheet 3 is preferably a porous or non-porous nonwoven fabric or a porous plastic sheet. As the material fibers constituting the nonwoven fabric, in addition to olefins such as polyethylene or polypropylene, polyesters, polyamides, and other synthetic fibers, regenerated fibers such as rayon and cupra, and natural fibers such as cotton can be used. A nonwoven fabric obtained by an appropriate processing method such as a method, a spun bond method, a thermal bond method, a melt blown method, or a needle punch method can be used. Among these processing methods, the spunlace method is excellent in terms of flexibility and the spunbond method is excellent in drapeability, and the thermal bond method and the air-through method are excellent in terms of being bulky and soft. When a large number of through holes are formed in the liquid permeable top sheet 3, menstrual blood, venom, etc. (hereinafter collectively referred to as body fluid) are quickly absorbed, and the dry touch property is excellent. It will be a thing.

  The absorber 4 has a structure in which an upper layer absorber 4A and a lower layer absorber 4B are laminated. The lower layer absorber 4B has a planar shape that defines the outer edge of the absorber arrangement region, and the upper layer absorber 4A is formed in a region that is elongated in the napkin longitudinal direction at the center portion in the width direction, on the use surface side. Arranged to form the mid-high section 6 of the high absorber. The thickness of the middle-high portion 6 is preferably 3 to 25 mm, preferably 5 to 18 mm, because if the thickness is too large, the rigidity of the absorbent body 4 increases and the adhesion to the body decreases. Embosses 8 that are closed in the circumferential direction are provided along the peripheral edge of the upper layer absorbent body 4 </ b> A, and embosses 9, 10, and 11 are formed respectively. The embossing 8 is an embossing provided to prevent the positional deviation of the upper layer absorbent body 4A and to precisely define the middle and high portions 6.

  The upper absorbent body 4A includes at least pulp fibers and synthetic fibers, and the ratio of the pulp fibers: synthetic fibers is 80 to 20:20 to 80, preferably 40 to 60:60 to 40 in terms of weight. Is desirable.

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

  The upper layer absorbent body 4A can contain a highly water absorbent resin. Examples of the superabsorbent resin include cross-linked polyacrylate, self-crosslinked polyacrylate, saponified acrylate-vinyl acetate copolymer cross-linked, isobutylene / maleic anhydride copolymer cross-linked, Examples include cross-linked polysulfonates, and partially cross-linked water-swellable polymers such as polyethylene oxide and polyacrylamide. Among these, those based on acrylic acid or acrylate that are excellent in water absorption and water absorption speed are preferred. In the production process of the highly water-absorbent resin having the water absorption performance, the water absorption force and the water absorption speed can be adjusted by adjusting the crosslinking density and the crosslinking density gradient. The blending amount is required to promote penetration of the upper absorbent body 4A into the lower absorbent body 4B, and so-called gel blocking phenomenon occurs when the blending amount is increased. Therefore, the blending amount is 1 in terms of weight with respect to the total weight of pulp fibers and synthetic fibers. It is desirable to blend at a ratio of -10%. In addition, when the high water-absorbing resin content exceeds 50%, the entanglement between the pulp fibers is lost, the sheet strength is lowered, and tearing, cracking, and the like are likely to occur.

  Examples of the pulp fiber include chemical fibers obtained from wood, cellulose fibers such as molten pulp, and artificial cellulose fibers such as rayon and acetate. Softwood pulp having a longer fiber length than hardwood pulp functions and It is preferably used in terms of price.

  On the other hand, the lower layer absorbent body 4B does not contain a synthetic fiber and can be a pulp fiber alone or a mixture of a pulp fiber and a superabsorbent resin. In the lower layer absorbent body 4B, permeability is not considered important, and it is desirable that the body fluid that has permeated from the upper layer absorbent body 4A is retained inside and retained so as not to bleed out. . Further, the content of the superabsorbent resin is desirably blended at a ratio of 1 to 20% by weight with respect to the total weight of the fibers constituting the lower layer absorbent body 4B in order to absorb the body fluid and retain the water.

On the other hand, the width dimension of the liquid-permeable top sheet 3 is slightly longer than the width of the absorbent body 4 and covers the absorbent body 4 as shown in the cross-sectional views of FIGS. The purpose of the three-dimensional gathered BS is to prevent the permeation of menstrual blood, or the like from the side non-woven fabric 7 different from the liquid-permeable top sheet 3, specifically to increase the feeling of touch. Depending on the case, it is configured using a non-woven fabric material subjected to appropriate water repellent treatment or hydrophilic treatment. The side nonwoven fabric 7 can be made of natural fiber, synthetic fiber, regenerated fiber, or the like and formed by an appropriate processing method. Preferably, the side nonwoven fabric 7 eliminates the feeling of stickiness and prevents stuffiness. For this reason, it is preferable to use a non-woven fabric with reduced basis weight and air permeability. Specifically, it is desirable to use a nonwoven fabric prepared with a basis weight of 15 to 23 g / m ² , and silicon-based, paraffin-based, alkylchromic chloride-based water repellents, etc. to reliably prevent the passage of body fluids. A water repellent nonwoven fabric coated with is preferably used.

As shown in FIGS. 2 and 3, the side nonwoven fabric 7 has an outer portion from the intermediate portion in the width direction from the inner position of the absorbent body 4 to slightly beyond the absorbent side edge to the outer edge of the liquid-impermeable backsheet 2. A pair of left and right wings are bonded to the absorbent body side portion substantially corresponding to the body fluid discharge portion by the laminated sheet portion of the side nonwoven fabric 7 and the liquid-impervious back sheet 2. flaps W, to form a W, a second wing-shaped flaps W _B now to the buttocks side _position, to form a W _B. These wing-shaped flaps W, W and second wing-shaped flaps W _B, W, respectively on the outer surface side adhesive layer 12 of the _B ..., 13 ... comprises a, when worn for shorts, as shown in FIG. 4, the wings The flaps W, W are folded back to the opposite side in the vicinity of the folding line RL, and are wound around the crotch portion of the shorts and fastened.

  On the other hand, while the inner side part of the said side nonwoven fabric 7 is folded back substantially double, the thread-like elastic elastic member by which the appropriate position of the both ends or the longitudinal direction was fixed to the height direction intermediate part inside this double sheet | seat 19, and a plurality of, in the illustrated example, two thread-like elastic stretch members 20, 20 are fixed at both ends or at appropriate positions in the longitudinal direction at the upper portion of the thread-like elastic stretch member 19. It is arranged. As shown in FIG. 3, the double sheet portion is folded and laminated in a Z-shaped cross section at the front and rear end portions, and is bonded to the absorbent body 4 side, whereby the thread elastic elastic member 19 is disposed. As the bending points, three-dimensional gathers BS and BS standing on the surface side are formed while forming pockets P and P having openings inward in a cross-sectional shape.

[Structure of sanitary shorts 14]
[Basic structure]
The sanitary shorts 14 is worn with an absorbent article such as a sanitary napkin or a panty liner, and as shown in FIG. 5, connects the front body 15, the back body 16, and both. The crotch part 17 is comprised. The front body 15, the back body 16 and the crotch part 17 are made of a material having good feel and breathability, including elastomer fibers, and having a certain degree of stretchability in the vertical and horizontal directions, such as cotton cloth. Is desirable.

  The crotch portion 17 is sewn with a waterproof cloth 18 overlapped on the inner surface side of an outer cloth made of the same material as the front body 15 and the back body 16. This waterproof cloth 18 has the same shape as the crotch portion, is sewn at each of the side edge portion and the front and rear portions, and is waterproofed on the non-skin surface side (hidden inner surface side), for example, silicon-based or fluorine-based Waterproofing is performed by applying a water repellent or by laminating water-repellent sheets such as polyfluorinated ethylene, polyurethane, and polyethylene. In recent years, moisture permeable waterproof cloths in which a polyethylene amino acid urethane polymer, a polyurethane polymer, a polytetrafluoroethylene polymer is coated or laminated on a cloth are also provided. As the waterproof cloth 18 of the sanitary shorts 14, a cloth having moisture permeability is preferably used from the viewpoint of eliminating stuffiness as much as possible. In addition, elastic elastic members are disposed on the waist opening edge and the leg opening edge, respectively.

The shorts 14 are commercialized by overlapping the front body 15 and the back body 16 at the center of the crotch and joining the two side portions to each other.
[Rear fixing means of napkin 1]
The sanitary shorts 14 is provided with a rear fixing means 30 for fixing the rear side of the sanitary napkin 1.

  Hereinafter, each example of the rear fixing means 30 will be described in detail.

<< First Reference Embodiment >>
The rear fixing means 30 according to the first reference embodiment shown in FIG. 5 has a rear fixing cloth 31 on the napkin 1 so as to form a pocket (hatched area) that opens toward the crotch side on the inner surface side of the back body 16. It is intended to be provided.

  The rear fixed fabric 31 is formed by stitching the side edge and both side edges of the waist side to the fabric forming the back body 16 and forming only the crotch side as an opening. As the material, the same fabric as the shorts 14 is used. Although it can be constituted, it is preferably constituted by a fabric exhibiting higher stretchability than a shorts fabric. In the embodiment, the rear fixing cloth 31 is provided over almost the entire width of the back body 16. However, the rear fixing cloth 31 may be provided with a width that can easily accommodate the rear part of the napkin 1.

In order to attach the napkin 1 to the sanitary shorts 14, as shown in FIG. 6, the napkin 1 is applied to the shorts 14 while positioning the wing-shaped flaps W, W in the crotch portion, and the wing-shaped flaps W, W is folded back to the opposite side at the position near the folding line RL, wrapped around the crotch portion of the shorts and fixed, and the rear part of the napkin is inserted into the pocket between the rear fixing cloth 31 and the rear body 16, the second wing-shaped flaps _W B, is fixed to the rear body of the pressure-sensitive adhesive layer 13 of _{W B.}

  In the mounted state, the rear fixing cloth 31 that has received pressure from the buttocks firmly presses and holds the rear part of the napkin, so that it is possible to prevent displacement and twisting of the rear part of the napkin.

  By the way, as shown in FIG. 7, the rear fixed cloth 31 is formed so as to form pockets (shaded areas) that open to the center side on both side portions on the inner surface side from the crotch portion 17 to the back body 16, respectively. A pair of left and right rear fixing cloths 32A and 32B may be provided. In this case, both sides of the rear part of the napkin 1 are inserted into pockets between the rear fixing cloths 32A and 32B and the cloth of the back body 16, respectively. 7A shows an example in which the opening edges of the rear fixing cloths 32A and 32B are configured in parallel along the longitudinal direction, and FIG. 7B shows the opening edges of the rear fixing cloths 32A and 32B being inclined. This is a configured example.

<< Invention Example >>
Next, the rear fixing means 30 according to the embodiment of the present invention shown in FIG. 8 is provided with an elastic string member for fixing and holding the rear side of the napkin 1.

The first example shown in FIG. 8 is a pair of left and right elastic cord members 33A and 33B having one end fixed to the leg opening edge and the other end fixed to the rear waist opening edge. , 33B are arranged in a reverse C shape in plan view. In order to attach the napkin 1 to the sanitary shorts 14, as shown in the figure, the napkin 1 is applied to the shorts 14 while positioning the wing-shaped flaps W, W in the crotch portion, and the wing-shaped flaps W, folded on the opposite side by fold line RL vicinity W, fastened while fastened is wound around the crotch portion of the shorts, the second wing-shaped flaps W _B, the adhesive layer 13 of W _B to the back body 16 if the said elastic string member 33A, a second wing-shaped flaps _W B by 33B, is fixed to press the _{W B.}

The second example shown in FIG. 9 is one in which one end is fixed to one side part in the back body 16 and the other end is fixed to the other side part and an elastic string member 34 is arranged along the horizontal direction. The rear part of the napkin 1 is pressed and fixed along the horizontal direction. Further, the third example shown in FIG. 10 is similar to the first example in that a pair of left and right elastic cord members 35A, 35B having one end fixed to the leg opening edge and the other end fixed to the rear waist opening edge In this example, the elastic string members 35A and 35B are arranged in parallel in a plan view. Further, in the fourth example shown in FIG. 11, the end portion of the elastic string member is detachable from the shorts with a hook-and-loop fastener. Specifically, the male / female side fasteners 36 are connected to the waist end portions of the elastic cord members 35A, 35B, the female / male side fasteners 37 are disposed in the vicinity of the waist opening edges, and the elastic cord members 35A, 35B The waist side end can be fixed at an arbitrary position. The elastic string member 33A, 33B, 35A, for the 35B, as shown in FIG. 12, a second wing-shaped flaps _W B, can be fixed so as to wind the _{W B.}

<< Second Reference Example >>
The rear fixing means 30 according to the second reference embodiment shown in FIG. 13 fixes the rear part of the napkin 1 with a predetermined width along the longitudinal direction at the center of the shorts at least on the inner surface side from the crotch part to the back body. A rear fixing cloth 38 is provided.

  In the first example shown in FIG. 13, a rear fixing cloth 38 is arranged with a predetermined width in a range covering almost the entire length of the shorts from the waist opening edge of the front body to the waist opening edge of the rear body. It is stitched to the shorts 14 at the waist opening edge of the body. It is desirable that the width of the rear fixing cloth 38 is slightly narrower than the crotch width. The material can be constituted by using the same fabric as the shorts 14, but is preferably constituted by a fabric exhibiting higher stretchability than the shorts fabric. In the embodiment, the rear fixed cloth is provided over the entire length of the shorts 14, but it may be provided in a range from the crotch portion 17 to the back body 16.

In order to attach the napkin 1 to the sanitary shorts 14, as shown in FIG. 13, the napkin 1 is applied to the shorts 14 while positioning the wing-shaped flaps W, W in the crotch portion, and the wing-shaped flaps W, W folded on the opposite side at the folding line RL vicinity, as well as fastened wound around a back side or crotch portion of the panties of the rear fixed cloth 38, the napkin rear, second wing-shaped flaps W _B, on both sides of W _B The part is folded back to the opposite side, and the adhesive layers 13 and 13 are fixed to the back side of the rear fixing cloth 38.

  Next, the second example shown in FIG. 14 is an example in which a rear fixed cloth 39 having a predetermined width is provided along the lateral direction on the inner surface side of the back body 16. In this case, after the napkin 1 is placed on the shorts, the wing-shaped flaps W, W are folded back and fixed, and the rear end portion is folded back at the rear edge of the rear fixing cloth 39 at the flank side edge.

[Other examples]
(1) In the first reference embodiment and the second reference embodiment, the rear fixed fabrics 31 and 38 are made of the same fabric as the shorts 14 and a highly stretchable fabric. A formed net-like or mesh-like cloth sheet or elastic cloth sheet may be used. With hardly stuffiness easily through vapor in the case of the second reference embodiment, the body displacement preventing pressure-sensitive adhesive layer through the opening, since the displacement preventing pressure-sensitive adhesive layer of the second wing-shaped flaps W _B is adhered, tightly more deviation it can.
(2) In each of the above embodiments, the sanitary napkin provided with the wing-shaped flaps W, W has been described as an example, but the night napkin without the wing-shaped flaps W, W or the napkin for many times is used. Also good.

1 is a development view of a reference sanitary napkin 1. FIG. It is the II-II arrow directional view of FIG. It is the III-III arrow directional view of FIG. It is a shorts perspective view which shows the mounting state of the napkin 1. FIG. The rear part fixing means 30 (rear part fixing cloth 31) which concerns on a 1st reference form example is shown, (A) is a shorts expanded view, (B) is a BB line arrow directional view of (A). It is a short development drawing which shows the napkin fixing point by the rear part fixing means (rear part fixing cloth 30) concerning the example of the 1st reference form. (A) and (B) are both shorts development views showing composition of rear fixed cloth 32A and 32B concerning the 2nd example of the 1st reference form example. It is a short development view showing rear part fixing means 30 (elastic string members 33A and 33B) concerning the example of the present invention . It is a short development drawing which shows the rear part fixing means 30 (elastic string member 34) which concerns on the 2nd example of this invention example. It is a short development view showing rear part fixing means 30 (elastic string members 35A and 35B) concerning the 3rd example of the present invention example. It is a short development view showing rear part fixing means 30 (elastic string members 35A and 35B) concerning the 4th example of the example of the present invention . It is a shorts expansion view which shows the other napkin fixing point by the rear part fixing means 30 which concerns on the example of this invention . It is the shorts development view showing rear part fixing means 30 (rear part fixed cloth 38) concerning the example of the 2nd reference form. It is a short development view showing rear part fixing means 30 (rear part fixed cloth 39) concerning the 2nd example of the 2nd example of a reference form.

DESCRIPTION OF SYMBOLS 1 ... Sanitary napkin, 2 ... Impermeable back sheet, 3 ... Liquid permeable top sheet, 4 ... Absorber, 4A ... Upper layer absorber, 4B ... Lower layer absorber, 5 ... Crepe paper, 6 ... Middle high part, 7 ... side nonwoven, 8-11 ... embossed, BS ... standing gathers, W ... wing-shaped flaps, W B _... buttocks side wing-shaped flaps, 14 ... sanitary panty, 15 ... front body, 16 ... rear body, 17 ... crotch Part, 30 ... rear fixing means, 31 · 32A · 32B ... rear fixing cloth, 33A · 33B · 34 · 35A · 35B ... elastic string member, 38 · 39 ... rear fixing cloth

Claims (1)

In the sanitary shorts which consists of the front body, the back body and the crotch part connecting these both, and is worn with the absorbent article attached,
Provided with a rear fixing means for fixing the rear side of the absorbent article, it said rear portion fastening means a shall provided to fix retaining the rear side of the absorbent article, one end of the sanitary panty leg is fixed to the opening edge, the other end Yes to a pair of left and right elastic string member fixed to the rear waist opening edge portion of the sanitary panty,
The elastic string member is provided with a male / female side fastener at the waist end, and is detachable from the female / male side fastener disposed along the waistline direction at the rear waist opening edge of the sanitary shorts. Sanitary shorts characterized by.

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