JP7190854B2 - absorbent articles for men - Google Patents

Description

TECHNICAL FIELD The present invention relates to an absorbent article for men particularly suitable for light incontinence of men, and more particularly to an absorbent article for men that stretches along underwear and is easily fitted to the male genitalia.

2. Description of the Related Art Conventionally, there have been known absorbent articles for men that absorb light urine leakage (about 5 to 15 cc) such as residual urine. For example, in Patent Document 1 below, a fold line extending in the first direction is folded back with the top sheet facing inward, and the outer surface of the absorbent body is provided with the fold line at both ends in the first direction. A male incontinence pad is disclosed having cross-extending elastic members attached thereto.

Further, in the following patent document 2, a pair of barrier cuffs (three-dimensional cuffs) are formed to be separated from each other by the contraction action of the cuff elastic elements provided on the barrier cuff sheet and to prevent side leakage of urine. An absorbent pad for men is disclosed.

JP 2016-116722 A Japanese Patent No. 5514359

According to Patent Document 1, when the male incontinence pad is unfolded, the length of the peripheral edge of the absorbent body is reduced by the contractile force of the elastic member, thereby facilitating the formation of the male incontinence pad in an outwardly bulging shape. Although the effect of making it possible to apply the male incontinence pad to the male genitalia is described, it does not have a structure that can expand and contract according to the expansion and contraction of underwear. There was a problem that the pad did not follow the underwear even if the underwear was stretched due to the protruding part of the body such as the sac, and it was difficult to fit the male genitalia.

In addition, in the male absorbent pad described in Patent Document 2, the male genitalia are accommodated in the space formed by the pair of barrier cuffs. It was easy to feel. In addition, due to the expansion and contraction of the three-dimensional barrier cuff, there are cases where it is easy for a space to form between the male genitalia and the male absorbent pad itself. was there.

SUMMARY OF THE INVENTION Accordingly, the main object of the present invention is to provide an absorbent article for men which is improved in fit to the male genitalia, prevents bodily fluids from leaking, and reduces discomfort when worn.

In order to solve the above problems, the present invention according to claim 1 is a men's absorbent article comprising an absorbent body and having a vertical direction and a width direction orthogonal thereto,
The absorbent body has a portion in which a high basis weight portion having a relatively high basis weight and a low basis weight portion having a relatively low basis weight are alternately arranged in the width direction while extending in the vertical direction. An elastic member having elasticity along the width direction is arranged in a stretched state over the entire surface of the absorbent article for men ,
The absorbent body is arranged in the middle part in the vertical direction of the absorbent article for men, and the upper side and the lower side of the absorbent body are provided with portions where the absorbent body is not arranged,
The stretchable member is characterized in that the stretching force of the vertical section where the absorbent body is arranged is relatively higher than the stretching force of the vertical section where the absorbent body is not arranged . Goods are provided.

In the first aspect of the invention, the absorbent body is provided with a portion in which vertically extending high basis weight portions and low basis weight portions are alternately arranged in the width direction. A stretchable member having stretchability along the width direction is arranged in a stretched state over the entire surface of the absorbent article for men in plan view. By arranging the stretchable member on the entire surface of the absorbent article for men, it is possible to further improve the ability to follow underwear and to further improve the fit to the body, thereby more reliably preventing leakage of bodily fluids. The discomfort of time can be further reduced.
When the male genitalia (penis or scrotum) is pressed against the side of the skin of the absorbent body when the absorbent article for men is worn, the width of the low weight area is stretched and deformed by the stretching force of the stretchable member. , the low basis weight portion expands and contracts in the width direction in accordance with the expansion and contraction of the undergarment along the projecting shape. As a result, the fit to the male genitalia is improved, and discomfort during wearing can be reduced. In addition, since the male absorbent article deforms along the protruding shape of the male genitalia, the gap between the male absorbent article and the male genitalia is reduced, making it difficult for bodily fluids to leak.

Further, in the present invention, the absorbent body is arranged in the vertical middle portion of the absorbent article for men, and portions where the absorbent body is not arranged are provided respectively on the upper side and the lower side of the absorbent article, and the stretchable member In the above, the stretching force of the vertical section in which the absorbent body is arranged is relatively higher than the stretching force of the vertical section in which the absorbent body is not arranged.

In the elastic member, the elastic force of the vertical section where the absorbent body is arranged is higher than the elastic force of the vertical section where the upper and lower absorbent bodies are not arranged, so that the absorbent body is arranged. The provided vertical section is easily deformed into a cup shape that shrinks significantly in the width direction, and the projecting shape of the male genitalia makes it easier to reliably fit.

As the present invention according to claim 2, there is provided the male absorbent article according to claim 1, wherein the low basis weight part comprises a penetrating part penetrating through the absorbent body or a recessed part with a bottom.

In the second aspect of the present invention, when the low basis weight portion is formed by the penetrating portion, the width of expansion and contraction of the low basis weight portion is increased, making it easier to fit the absorbent body along the projecting shape of the male genitalia. On the other hand, when the low basis weight portion is formed by the bottomed recess portion, body fluid can be absorbed even in the low basis weight portion, and deterioration of the absorption performance of the absorbent due to the provision of the low basis weight portion can be suppressed.

As the present invention according to claim 3, the elastic member is formed of an elastic sheet whose material itself has elasticity, or a plurality of thread-like elastic elastic members are arranged along the width direction and at intervals in the vertical direction. The male absorbent article according to any one of claims 1 and 2 is provided, which is formed by the arranged sheet members.

In the third aspect of the invention, examples of the form of the stretchable member include a stretchable sheet whose material itself is stretchable or a sheet member in which a plurality of thread-like elastic stretchable members are arranged. In the case of imparting continuous stretchability, it is preferable to use the above-mentioned stretchable sheet, and in order to easily impart stretchability at low cost, it is preferable to use a sheet member in which a plurality of thread-like elastic stretchable members are arranged. .

As the present invention according to claim 4 , the elastic member is formed by arranging a plurality of thread-like elastic elastic members between the skin side sheet and the non-skin side sheet, and the skin side sheet and the non-skin side sheet are arranged. 4. The absorbent article for men according to any one of claims 1 to 3 , wherein the sheet is formed by separate sheets or by folding one sheet.

In the invention according to claim 4 , in the case where the stretchable member is formed by arranging a plurality of thread-like elastic stretchable members between the skin-side sheet and the non-skin-side sheet, the skin-side sheet and the non-skin-side sheet. A specific arrangement form example is given. In the first embodiment, the skin-side sheet and the non-skin-side sheet are formed of separate sheets. In this case, a skin-side sheet and a non-skin-side sheet having substantially the same shape may be joined together, or both vertical ends of the non-skin-side sheet may extend outward from the vertical ends of the skin-side sheet. By folding this extended portion toward the skin side of the skin side sheet so as to involve the vertical edges of the skin side sheet, the vertical edges of the skin side sheet are folded back of the non-skin side sheet. It may be covered by the part. In the latter case, both edges in the vertical direction of the skin-side sheet are covered with the folded-back portions of the non-skin-side sheet, so that it feels soft against the skin and can reduce uncomfortable feeling when worn.

As the present invention according to Claim 5 , Claims 1 to 3 , wherein non-stretching means for deactivating the stretching force is applied to the stretchable member disposed in a region other than the region overlapping the low basis weight portion. An absorbent article for men according to any one of the above is provided.

In the invention according to claim 5 , the stretchable member arranged in the region other than the region overlapping the low basis weight portion is subjected to a reduction treatment for reducing the stretching force by ultrasonic compression bonding, thermocompression bonding, or the like. It is possible to prevent the absorber and its surroundings from strangely shrinking and the fit to the protruding shape of the male genitalia from deteriorating. In addition, since the non-stretching means increases elasticity, the anti-slip layer provided on the non-skin side of the men's absorbent article makes it easier to fix the men's absorbent article to underwear.

As the present invention according to claim 6 , the non-skin side of the absorbent article for men is provided with a non-slip layer for fixing with underwear, and the non-slip layer is a region that does not overlap the absorbent body in plan view. There is provided an absorbent article for men according to any one of claims 1 to 5 provided in .

In the invention according to claim 6 , since the region where the absorbent body is arranged is not fixed to the underwear by providing the anti-slip layer in the region that does not overlap with the absorbent body, the low basis weight part expands and contracts and the absorbent body becomes easier to deform along the protruding shape of the male genitalia.

As the present invention according to claim 7 , the low basis weight part is formed in a shape that gradually narrows from the skin side toward the non-skin side in a cross-sectional view along the width direction of the absorbent body. A male absorbent article according to any one of 1 to 6 is provided.

In the invention according to claim 7 , the low basis weight portion is formed in a shape that gradually narrows from the skin side toward the non-skin side in a cross-sectional view along the width direction of the absorbent body, thereby achieving the low weight. Since the high basis weight portion adjacent to the basis weight portion is formed in a cross-sectional shape that gradually widens from the skin side toward the non-skin side, when the low basis weight portion is formed to have a substantially equal width in the thickness direction of the absorbent body, In comparison, since the area of the high basis weight portion facing the skin surface is increased, the body fluid can be quickly absorbed by the absorbent body.

According to an eighth aspect of the present invention, the low basis weight portion is inclined to one side in the width direction from the skin side toward the non-skin side in a cross-sectional view along the width direction of the absorbent body. There is provided an absorbent article for men according to any one of items 1-6 .

In the invention according to claim 8 , the low basis weight portion is formed in a shape that is inclined in one direction in the width direction from the skin side toward the non-skin side in a cross-sectional view along the width direction of the absorbent body. ing. As a result, it is possible to increase the area of the high basis weight portion facing the side surface of the skin while ensuring a sufficient amount of elastic deformation in the low basis weight portion, so that the body fluid can be quickly absorbed by the absorbent body.

As the present invention according to claim 9 , the absorbent body is composed of a laminated body in which a plurality of absorbent bodies are laminated, and the low basis weight portion and the high basis weight portion are formed in each absorbent body, and the absorbent body is adjacent in the thickness direction. There is provided the male absorbent article according to any one of claims 1 to 6 , wherein the low basis weight parts are formed so as not to overlap each other.

In the invention according to claim 9 , the absorbent body is composed of a laminate in which a plurality of absorbent bodies are laminated, and the low basis weight part and the high basis weight part are formed in each layer of the absorbent body, and are adjacent to each other in the thickness direction. The absorbent bodies are formed so that the low basis weight parts do not overlap each other. As a result, the low basis weight portion is covered with the high basis weight portion of the adjacent layer of the absorbent body, so that body fluid can be more reliably absorbed by the absorbent body.

As described in detail above, according to the present invention, in the absorbent article for men, it is possible to improve fit to the male genitalia, prevent bodily fluids from leaking along, and reduce uncomfortable feeling when worn.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a partially broken development view of the male absorbent article 1 according to the present invention; FIG. 2 is a view taken along line II-II of FIG. 1; Fig. 2 is a plan view of the male absorbent article 1 in a natural state on which the contractile force of the elastic member 6 acts. Fig. 2 is a side view showing a wearing state of the absorbent article 1 for men; Fig. 10 is a plan view of a men's absorbent article 1 according to a modification; FIG. 6 is a view taken along line VI-VI in FIG. 5; Fig. 10 is a vertical cross-sectional view of a men's absorbent article 1 according to a modified example. It is a top view of the absorber 4 which concerns on a modification. Fig. 10 is a plan view of a men's absorbent article 1 according to a modification; It is a cross-sectional view of the absorber 4 which concerns on a modification. Fig. 10 is a cross-sectional view of a male absorbent article 1 according to another embodiment.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

As shown in FIGS. 1 and 2, the absorbent article 1 for men according to the present invention comprises a leak-proof sheet 2 made of a polyethylene sheet, a polypropylene sheet, or the like, and a liquid-permeable surface through which body fluids such as urine can quickly permeate. A sheet 3, an absorbent body 4 made of cotton pulp or synthetic pulp interposed between the sheets 2, 3, an outer sheet 5 covering the outermost surface (non-skin side) of the absorbent article 1 for men, It is composed of a stretchable member 6 that imparts stretchability to a predetermined area. In addition, around the absorber 4, the outer edges of the leak-proof sheet 2 and the liquid-permeable surface sheet 3 are joined by a joining means such as hot-melt adhesive, heat sealing, or ultrasonic sealing. A flap portion F is formed by joining the leak-proof sheet 2 without the absorber 4 and the liquid-permeable surface sheet 3 . Further, although not shown, at least the skin side and the non-skin side of the absorbent body 4 may be covered with a wrapping sheet made of crepe paper or non-woven fabric in order to maintain the shape of the absorbent body 4 and improve diffusion. . As shown in FIG. 1, the absorbent article 1 for men has a vertical direction corresponding to the vertical direction of the wearer when worn, and a width direction orthogonal thereto.

The structure of the men's absorbent article 1 will be further detailed below.
As the leak-proof sheet 2, a sheet material having at least water impermeability, such as an olefin-based resin sheet such as polyethylene or polypropylene, is used. A non-woven fabric sheet (in this case, the waterproof film and the non-woven fabric form a leak-proof sheet) or the like can be used after ensuring substantial liquid impermeability. In recent years, there is a tendency to use moisture-permeable materials from the viewpoint of preventing stuffiness. This water-impervious/moisture-permeable sheet material is a microporous sheet obtained by melting and kneading an inorganic filler into an olefin resin such as polyethylene or polypropylene to form a sheet, and then stretching the sheet in a uniaxial or biaxial direction. is. The leak-proof sheet 2 is provided in a region overlapping at least the absorbent body 4 in plan view of the absorbent article 1 for men, and in the embodiment shown in FIGS. It is provided so as to extend slightly outward from the body 4 .

Next, for the liquid-permeable surface sheet 3, a perforated or non-perforated nonwoven fabric, a porous plastic sheet, or the like is preferably used. Examples of the material fibers that make up the nonwoven fabric include synthetic fibers such as olefin-based, polyester-based, and polyamide-based fibers such as polyethylene or polypropylene, recycled fibers such as rayon and cupra, and natural fibers such as cotton. A nonwoven fabric obtained by an appropriate processing method such as a lace method, a spunbond 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 flexibility, the spunbond method is superior in drapeability, and the thermal bonding method and the air-through method are superior in bulkiness and compression recovery. The fibers of the non-woven fabric may be either long fibers or short fibers, but preferably short fibers are used in order to produce the feel of a terry cloth. Also, in order to facilitate embossing, it is preferable to use olefin fibers such as polyethylene or polypropylene having a relatively low melting point. In addition, composite fibers such as core-sheath type fibers, side-by-side type fibers, and split type fibers having a high melting point fiber as a core and a low melting point fiber as a sheath can also be preferably used. The liquid-permeable surface sheet 3 is provided in a region overlapping at least the absorbent body 4 in a plan view of the absorbent article 1 for men, and in the embodiment shown in FIGS. , and in the portion extending outward from the absorbent body 4, the leak-proof sheet 2 also extending outward from the absorbent body 4 and a hot melt adhesive or heat It is joined by joining means such as a seal.

The material fibers constituting the exterior sheet 5 may be synthetic fibers such as olefin-based, polyester-based, and polyamide-based fibers such as polyethylene or polypropylene, regenerated fibers such as rayon and cupra, and natural fibers such as cotton. , a spunbond method, an SMS method, a meltblown method, a thermal bond method, an air-through method, a point bond method, a needle punch method, and the like. Specifically, as the nonwoven fabric processing method, the spunbond method and the SMS method are preferable because they are excellent in balance between thinness and strength. The planar shape is not particularly limited as long as it is larger than the absorber 4, but in the illustrated example, it has a horizontally long rectangular shape whose width dimension is longer than its vertical dimension.

The absorber 4 interposed between the leak-proof sheet 2 and the liquid-permeable surface sheet 3 is made of, for example, pulp mixed with highly water-absorbing resin, or pulp mixed with chemical fiber and having high water absorption. A material mixed with a curable resin is used. Although not shown, the absorbent body 4 is desirably covered with an enveloping sheet in order to retain its shape, quickly diffuse bodily fluids, and prevent backflow of once absorbed bodily fluids. Examples of the pulp include chemical pulp obtained from wood, cellulose fibers such as melted pulp, and artificial cellulose fibers such as rayon and acetate. Softwood pulp with a longer fiber length is more functional and functional than hardwood pulp. It is preferably used in terms of price. Moreover, as the absorbent body 4, an air-laid absorbent body capable of reducing bulk, or a polymer sheet in which a superabsorbent resin is arranged between two layers of non-woven fabric may be used.

Synthetic fibers may also be mixed in the absorber 4 . For the synthetic fibers, 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. A mixture may also be used. In addition, composite fibers such as core-sheath type fibers, side-by-side type fibers, and split type fibers having a high-melting-point fiber as a core and a low-melting-point fiber as a sheath can also be used. In the case of hydrophobic fibers, the synthetic fibers are preferably surface-treated with a hydrophilizing agent so as to have affinity for body fluids.

Examples of the superabsorbent resin include a crosslinked polyacrylate, a self-crosslinked polyacrylate, a saponified product of a crosslinked acrylic acid ester-vinyl acetate copolymer, a crosslinked isobutylene/maleic anhydride copolymer, Polysulfonate cross-linked products, and products obtained by partially cross-linking water-swellable polymers such as polyethylene oxide and polyacrylamide are exemplified. Of these, acrylic acid or acrylate-based agents are preferred because of their excellent water absorption and water absorption rate. It is possible to adjust the water absorbing power and the water absorbing rate by adjusting the crosslink density and the crosslink density gradient in the production process of the superabsorbent resin having the water absorbing performance.

When a wrapping sheet covering the absorbent body 4 is provided, the wrapping sheet is interposed between the liquid-permeable surface sheet 3 and the absorbent body 4 as a result. When the enveloping sheet is made of crepe paper, the enveloping sheet, which has excellent absorbency, quickly diffuses the urine and prevents the backflow of the urine.

Either or both of the absorbent body 4 and the enveloping sheet preferably have a color other than white, preferably a relatively dark, low light color such as black or gray. Since the present invention relates to an absorbent article for men, the use of a relatively dark color gives a calm impression for men, makes it less noticeable when worn with dark-colored underwear, and makes urination marks less noticeable. Become. The coloring method is not particularly limited, and an appropriate dyeing method or coloring raw material can be used. Also, one or both of the absorbent body 4 and the enveloping sheet may be colored by containing activated carbon. This makes it possible to add the deodorizing effect of activated carbon.

The planar shape of the absorbent body 4 is not particularly limited as long as it is a shape that easily fits a male crotch. In the illustrated example, it is formed in a substantially square shape, but it may be rectangular, circular, elliptical, trapezoidal, triangular, or the like.

The absorbent body 4 has a portion in which a high basis weight portion 10 having a relatively high basis weight and a low basis weight portion 11 having a relatively low basis weight are arranged alternately in the width direction while extending in the vertical direction. . A plurality of the low basis weight portions 11 are arranged at intervals in the width direction in the middle portion in the width direction of the absorber 4 having a substantially rectangular planar shape. As a result, in the vertical section where the low basis weight parts 11 are arranged, the absorbent body 4 has a plurality of high basis weight parts 10 and low basis weight parts 11 extending in the vertical direction alternately arranged in the width direction. It is formed in the shape of a visual fence. In the illustrated example, the high basis weight portions 10 are arranged over the entire length in the width direction above and below the vertical section where the low basis weight portion 11 is arranged. In order to prevent leakage of bodily fluids that diffuse downward due to gravity, the basis weight portion 10 may be arranged at least below the vertical section in which the low basis weight portion 11 is arranged, and the absorber is present on the upper side. You can choose not to.

The planar shape of the low basis weight portion 11 is elongated in the vertical direction of the male absorbent article 1 . In the illustrated example, it is formed in a rectangular shape (strip shape) with a substantially equal width, but it may be formed in an arc shape in which both ends in the longitudinal direction bulge outward, or the contour lines on both sides bulge outward. It may be formed in a substantially elliptical shape or the like.

The width of the low basis weight portion 11 (length in the width direction of the male absorbent article 1) is substantially equal to or smaller than the width of the high basis weight portion 10 disposed between the adjacent low basis weight portions 11, 11. preferably formed. Since the low basis weight portion 11 has a low basis weight of the absorbent body and is inferior in the ability to absorb body fluids, it is preferable to form the low basis weight portion 11 with a width as small as possible as long as the deformation of the low basis weight portion 11 at the time of wearing, which will be described later, appropriately occurs. . Specifically, the width W ₁₁ of the low basis weight portion 11 is preferably 3 to 10 mm, and the width W ₁₀ of the high basis weight portion 10 is preferably 10 to 20 mm. Also, the length L of the low eye weight portion 11 should be long enough to wrap the wearer's penis and scrotum. It is preferable that the dimensions of the low basis weight portion 11 and the high basis weight portion 10 are substantially the same over the entire male absorbent article 1, but may differ depending on the part. As an example of a different form, the length L of the low basis weight portion 11 is set to It can be formed so that it is longest in the central portion and gradually becomes shorter toward both ends in the width direction. In addition, in order to prevent leakage from both ends in the width direction of the absorbent body 4, the high basis weight parts 10 at both width direction ends of the absorbent body 4 are arranged between the adjacent low basis weight parts 11, 11. is preferably formed with a width greater than the width W ₁₀ of .

The low basis weight part 11 preferably comprises a penetrating part penetrating the absorbent body 4 or a recessed part with a bottom opening on the skin side and/or the non-skin side of the absorbent body 4 . The penetrating portion is a portion where the basis weight of the absorbent body is zero, and is an opening penetrating the skin side surface and the non-skin side surface of the absorbent body 4 . The recessed portion is a portion where an absorbent having a lower basis weight than the high basis weight portion 10 exists at the bottom.

When the absorbent body 4 is made of the polymer sheet, the low basis weight portion 11 is preferably formed by the penetrating portion. Further, the low basis weight portion 11 in this case is formed in the middle portion in the vertical direction of the absorber 4, so that the high basis weight portion 10 continuous over the entire width in the width direction is formed on the upper side and the lower side of the low basis weight portion 11. Alternatively, by providing the low basis weight portion 11 over the entire length of the absorbent body 4 in the vertical direction, the high basis weight portion 10 of the absorbent body 4 is divided into a plurality of parts in the width direction by the low basis weight portion 11. It may be formed in a shaped shape.

As shown in FIGS. 1 and 2, a stretchable member 6 having stretchability along the width direction is arranged in a stretched state in a region overlapping at least the low basis weight portion 11 in a plan view of the absorbent article 1 for men. is set. In the natural state where the elastic force of the elastic member 6 acts, as shown in FIG.

In order to wear the absorbent article 1 for men, an undergarment attached with the absorbent article 1 for men is normally worn on the part that the male genitalia abuts when worn, so that the absorbent article 1 for men is attached to the male genitalia. The side of the skin is pressed against it. When the male absorbent article 1 is worn, as shown in FIG. 4, the male genitalia (penis and scrotum) protruding to the side of the skin of the male absorbent article 1 are pressed against the undergarment. In accordance with the expansion and contraction along the protruding shape of the male genitalia, the low basis weight portion 11 in which the elastic member 6 is arranged expands and contracts in the width direction, and the male absorbent article 1 conforms to the protruding shape of the male genitalia. and fit. In this way, since the absorbent article 1 for men is stretched and deformed integrally with the underwear, the absorbent article 1 for men fits so as to envelop the male genitalia, and the fit to the male genitalia is improved. discomfort can be reduced. In addition, since the male absorbent article 1 deforms along the protruding shape of the male genitalia, the gap between the male absorbent article 1 and the male genitalia is reduced, making it difficult for bodily fluids to leak.

The stretchability of the stretchable member 6 may be imparted to the entire absorbent body 4 or the entire men's absorbent article 1 , but the region overlapping the high basis weight portion 10 of the absorbent body 4 in plan view has stretchability. It is preferred not to give If stretchability is imparted to the region overlapping with the high basis weight portion 10, the absorber 4 may shrink and the fit to the penis may deteriorate. Also, the area outside the absorber 4 may not be stretchable. In order not to impart stretchability to the region other than the region overlapping with the low basis weight portion 11 in this way, the stretchable member 6 is not arranged, or the member that exhibits the stretchability of the stretchable member 6 is given a predetermined non-stretchability. It can be done by deactivating the stretchability by applying a means. The state in which stretchability is not imparted is a concept that includes not only the state in which the stretchability of the stretchable member 6 is zero, but also the state in which the stretchability is extremely small compared to the region overlapping the low basis weight portion 11 . It is preferable that the elongation rate of the portion to which stretchability is not imparted is 1/10 or less, particularly 1/20 or less of the elongation rate of the low basis weight portion 11 .

As shown in FIGS. 1 and 2, the elastic member 6 is formed of an elastic sheet whose material itself is elastic, or as shown in FIGS. It is preferably formed by a sheet member on which a plurality of thread-like elastic stretchable members are arranged with a space therebetween. As the former sheet material whose material itself is stretchable, for example, a stretchable film, nonwoven fabric, urethane foam, or the like processed into a sheet can be used. As for the direction of expansion and contraction of the elastic member 6, it is preferable to use a member that is mainly elastic in the width direction of the absorbent article 1 for men, but hardly expands and contracts in the vertical direction. You may use what is free.

The elastic member 6 preferably has an elongation rate of 20% to 40% according to JIS L1096 elongation rate B method (constant load method for fabrics) relating to the stretchability of stretchable woven fabrics and knitted fabrics. The elongation rate of underwear varies depending on the type, but since many of them generally have an elongation rate of about 20% to 40%, it is possible to use underwear with an elongation rate that is almost the same as that of general underwear. , Stretches like underwear to improve fit and reduce slippage.

When a stretchable sheet whose material itself is stretchable is used as the stretchable member 6, it is arranged in a region other than the region overlapping the low basis weight portion 11, such as the region overlapping the high basis weight portion 10 and the region outside the absorbent body 4. In order to deactivate the stretchable force of the stretchable member 6, it is preferable to provide a non-stretchable means for crimping the stretchable sheet while applying ultrasonic waves or heat in an arbitrary pattern.

When a sheet member on which a plurality of thread-like elastic stretchable members are arranged is used as the stretchable member 6, the sheet member is, as shown in FIGS. Between the non-skin side sheet 14 arranged on the skin side, along the width direction of the male absorbent article 1 and at intervals in the vertical direction perpendicular thereto, a plurality of thread-like elastic elastic members 15, 15 are provided. It is formed by arranging .

A non-woven fabric may be used as the skin-side sheet 13 , and the leak-proof sheet 2 may also serve as the skin-side sheet 13 . When a non-woven fabric is used as the skin-side sheet 13, as shown in FIG. 6, it is necessary to separately provide a leak-proof sheet 2 that covers at least the non-skin side of the absorbent body 4, but the leak-proof sheet 2 is placed on the skin side. When the sheet 13 is also used, the number of materials can be reduced as shown in FIGS. 7(A) and 7(B).

On the other hand, it is preferable to use the exterior sheet 5 as the non-skin side sheet 14 .

To explain the manufacturing method of the sheet member in more detail, as shown in FIGS. Elastic stretchable members 15, 15, . . . are arranged. Among these filamentous elastic stretchable members 15, filaments are arranged in regions other than the region overlapping the low basis weight portion 11, such as the region overlapping the high basis weight portion 10 of the absorber 4 in the thickness direction and the region outside the absorber 4. By deactivating the stretchability of the elastic stretchable members 15 using a predetermined deactivating means, it is possible to obtain the stretchable member 6 in which the stretchability is activated in the region overlapping the low basis weight portion 11 . As non-stretchable means for deactivating the stretchability of the thread-like elastic stretchable members 15, the thread-like elastic stretchable members 15 may be finely cut at predetermined intervals by a discontinuing means described later, or the thread-like elastic stretchable members may be cut at predetermined intervals. By continuously adhering to the skin side sheet 13 and the non-skin side sheet 14 over the section, the elastic force of the thread-like elastic elastic member 15 does not function or the function is greatly reduced. is preferably used. In order to finely cut the thread-like elastic stretchable member 15, for example, the thread-like elastic stretchable member 15 is cut at intervals of 1 to 10 mm, preferably at intervals of 1 to 5 mm, according to a predetermined cut pattern.

In order to cut and discontinue the thread-like elastic stretchable members 15, after manufacturing a sheet in which the thread-like elastic stretchable members 15 are arranged between the skin-side sheet 13 and the non-skin-side sheet 14, convex portions are formed on the surface. The sheet is passed between a cutter roll formed with a plurality of cutters arranged on the convex portion and an opposing roll opposed to the cutter roll, and the filamentous elastic members 15 at predetermined portions of the sheet are passed through the cutter roll. Cutting is performed by at least one of pressurization and heating between the convex portion and the opposing roll. It is preferable that the facing roll is separated from the cutter roll so that the cutter portion is lowered by the rotation of both rolls and comes into contact only with the cutter portion of the cutter roll.

The thread-like elastic stretchable member 15 may be adhered continuously or intermittently to the skin-side sheet 13 and the non-skin-side sheet 14 . When the adhesive is applied at approximately equal intervals along the thread-like elastic stretchable members 15 and adhered intermittently, the skin-side sheet 13 and the non-skin-side sheet 14 are bonded at the portions to which the thread-like elastic stretchable members 15 are adhered. Since it is formed in a pleated shape in which recesses and non-adhesive portions protrude, the appearance is improved, which is preferable.

As shown in FIG. 5, when the absorbent body 4 is arranged in the vertical middle part of the absorbent article 1 for men, and the upper and lower sides of the absorbent body 4 are respectively provided with no absorbent body. In the elastic member 6, the elastic force of the vertical section (section A in the figure) in which the absorbent body 4 is arranged is equal to the vertical section (section B in the figure) in which the absorbent body 4 is not arranged. is preferably relatively high compared to the elastic force of the As for the ratio of the stretching force of the A section to the stretching force of the B section, the stretching force of the A section: the stretching force of the B section is preferably about 1.5 to 10:1. In order to change the stretching force between the A section and the B section, in the form shown in FIG. Alternatively, it can be achieved by arranging separate thread-like elastic elastic members 15 having different elastic forces between the A section and the B section. In FIG. 5, the stretchable member 6 is composed of the thread-like elastic stretchable members 15, but it can be formed in the same way when a stretchable sheet whose material itself is stretchable is used.

By setting the stretching force of the A section to be greater than the stretching force of the B section, the vertical section in which the absorbent body 4 is arranged contracts more greatly, making it easier for the absorbent body 4 to adhere to the male genitalia. The vertical section in which the absorbent body 4 is disposed is easily deformed into a cup shape that shrinks greatly in the width direction, and the male genitalia is accommodated in this cup-shaped space, so that the protruding shape of the male genitalia allows for a more reliable fit. easier to do.

When the stretchable member 6 is formed by arranging a plurality of thread-like elastic stretchable members 15 between the skin-side sheet 13 and the non-skin-side sheet 14, see FIGS. , the skin-side sheet 13 and the non-skin-side sheet 14 may be formed by separate sheets, or as shown in FIG. may

When forming the former skin-side sheet 13 and non-skin-side sheet 14 with separate sheets, as shown in FIG. It can be stacked with aligned edges. In this embodiment, since the skin-side sheet 13 and the non-skin-side sheet 14 can have the same planar shape, manufacturing can be simplified and material costs can be reduced.

As a modification, as shown in FIG. 7(B), the skin side of the skin side sheet 13 is folded so that both ends of the non-skin side sheet 14 in the vertical direction involve the edges of the skin side sheet 13 in the vertical direction. can be extended to As a result, the vertical edge of the skin-side sheet 13 is covered with the folded part of the non-skin-side sheet 14, so that the vertical edge of the skin-side sheet 13 does not come into direct contact with the skin surface, reducing discomfort during wearing. can. The folded portion of the non-skin side sheet 14 folded back to the skin side is arranged between the absorbent body 4 and the skin side sheet 13 in the illustrated example, but the skin side or the liquid permeable surface of the liquid permeable surface sheet 3 is arranged. It may be arranged between the sheet 3 and the absorbent body 4 .

FIG. 7C shows a case where the skin-side sheet 13 and the non-skin-side sheet 14 are formed by folding one sheet. In this embodiment, the skin-side sheet 13 and the non-skin-side sheet 14 can be made up of one sheet, so that manufacturing can be simplified and material costs can be reduced. The folded portion of the single sheet may be either the upper end or the lower end of the absorbent article 1 for men.

Next, a modified example of the low basis weight portion 11 will be described. can do. In FIG. 8(A), when the absorber 4 is divided into three equal parts in the vertical direction, the low basis weight part 11 is arranged only in the central part in the vertical direction, and the upper and lower parts are divided into It is an example of a form in which the low basis weight part 11 is not arranged. In this embodiment, stretchability is imparted to the central portion of the absorbent body 4 in the vertical direction, so that it is easy to fit to the male genitalia. is formed, which improves the ability to absorb body fluids.

In addition, FIG. 8(B) shows that when the absorber 4 is divided into almost half in the vertical direction, the low basis weight portion 11 is arranged only in the upper division, and the low basis weight portion 11 is arranged in the lower division. This is an example of a form that does not. In this form, since the upper part of the absorbent body is provided with elasticity, the fit to the upper part of the male genitalia is improved when worn, and when the penis is placed facing upward, the body fluid discharge part at the tip of the penis is wrapped. In addition, even when discharged body fluids flow downward due to gravity, the lower section in which the low basis weight portion 11 is not arranged provides excellent body fluid absorption capacity.

FIG. 8(C) shows, on the contrary, when the absorbent body 4 is divided into almost half in the vertical direction, the low basis weight portion 11 is arranged only in the lower division, and the low basis weight is arranged in the upper division. It is a form example in which the unit 11 is not arranged. In this embodiment, since the lower part of the absorbent body 4 is provided with elasticity, the fit to the scrotum is particularly good, and body fluid flowing downward along the skin surface of the male genitalia can be more reliably absorbed. become.

Furthermore, the low basis weight portion 11 is not only arranged in one section in the vertical direction of the absorbent body 4, but also divided into a plurality of sections in the vertical direction as shown in FIG. 8(D). Arrangement is also possible. At this time, the shape, size, number, and the like of the low eye weight portions 11 arranged in each section may be the same, and for the purpose of making it easier to fit the shape of the male genitalia, the shape and size of the low eye weight portions 11 may be changed. , number, etc. may be different. In the example shown in FIG. 8(D), the low-basis-weight portions 11, which are fewer in number than the lower section, are arranged in the upper section.

Further, as shown in FIG. 8, when the low basis weight portion 11 is arranged in a specific section of the absorbent body 4 in the vertical direction, the elastic member 6 is arranged only in the vertical section where the low basis weight portion 11 is arranged, It is preferable not to arrange the elastic member 6 in the section where the low basis weight portion 11 is not arranged.

Next, a modification of the arrangement of the absorber 4 with respect to the exterior sheet 5 will be described. As shown in FIG. 9, the absorber 4 may be arranged over substantially the entire length of the exterior sheet 5 in the vertical direction. Thereby, the area of the absorbent body 4 can be increased, and the absorption capacity can be improved. Since the liquid-permeable surface sheet 3 extends outward from the upper and lower ends of the absorbent body 4 , the vertical dimension of the exterior sheet 5 is equal to the vertical dimension of the absorbent body 4 by the amount of the extended liquid-permeable surface sheet 3 . It is formed larger than the directional dimension.

A non-skin side of the exterior sheet 5 is provided with an anti-slip layer 7 for fixing the male absorbent article 1 to underwear when worn on the body. As the anti-slip layer 7, a mechanically bonded hook material may be used, or an adhesive may be used.

The anti-slipping layer 7 is preferably provided in a region that does not overlap the absorbent body 4 in a plan view of the male absorbent article 1 . As a result, since the area where the absorbent body 4 is arranged is not fixed to the underwear, the low-basis-weight portion 11 expands and contracts, and the absorbent body 4 easily deforms along the protruding shape of the male genitalia. As shown in FIGS. 1 and 2, it is preferable that the anti-slipping layer 7 is provided on both ends of the exterior sheet 5 in the width direction along the vertical direction and in strips that are continuous over substantially the entire length in the vertical direction. . It should be noted that it is not preferable to dispose the anti-slip layer 7 at both ends of the exterior sheet 5 in the vertical direction along the width direction. If it is arranged in this upper and lower portion, there is a possibility that the deformation of the absorbent body 4 in the width direction is hindered. Moreover, it is preferable not to impart the stretchability of the stretchable member 6 to the region where the anti-slip layer 7 is provided.

Next, as shown in FIG. 10, a preferred form of the shape of the low basis weight portion 11 in a cross-sectional view along the width direction of the absorbent body 4 will be described. FIG. 10 is a view taken along the line X-X shown in FIG. 1, and is a cross-sectional view of the absorbent body 4 taken along the width direction along the portion where the low-basis-weight portions 11 are arranged. In the illustrated example, the low basis weight portion 11 is formed by a penetrating portion, but it may be a recessed portion with a bottom.

In FIG. 10(A), the low basis weight portion 11 is formed substantially perpendicular to the plane of the absorbent body 4 and is formed to have substantially the same width over the entire length in the thickness direction. Since the absorbent article 1 for men according to the present invention is worn so as to be directly pressed against the body fluid discharge part, body fluids directly permeate the surface of the absorbent body 4 facing the skin surface, and the skin surface becomes a substantial absorption surface S. Therefore, in the form shown in FIG. 10(A), the absorbent surface S is only the skin side surface of the high basis weight portion 10, and the low basis weight portion 11 is in a state where a gap is left. etc. is a concern.

Therefore, as shown in FIG. 10B, the low basis weight portion 11 is formed in a shape that gradually narrows from the skin side toward the non-skin side in a cross-sectional view along the width direction of the absorbent body 4. preferably. As a result, the high basis weight portion 10 adjacent to the low basis weight portion 11 is formed in a cross-sectional shape that gradually widens from the skin side toward the non-skin side, and both side surfaces of the low basis weight portion 11 are inclined toward the skin side. Since it becomes a surface, both side surfaces (inclined surfaces) of the low basis weight portion 11 also constitute the absorption surface S, and the area of the absorption surface of the high basis weight portion 10 is increased, so that body fluid can be quickly absorbed.

Further, as shown in FIG. 10(C), the low basis weight portion 11 is inclined in one direction in the width direction from the skin side toward the non-skin side in a cross-sectional view along the width direction of the absorbent body 4. may be formed by As a result, since one side surface of the low basis weight portion 11 becomes an inclined surface facing the skin side, this inclined surface facing the skin side also constitutes the absorbent surface S, and the area of the absorbent surface of the high basis weight portion 10 is increased. so that fluids can be absorbed more quickly. In this embodiment, of the high basis weight portions 10, 10 adjacent to each other with the low basis weight portion 11 interposed therebetween, the skin-side edge protruding toward the low basis weight portion 11 and the non-skin-side edge of the absorber 4 It is preferable to form them so as to overlap each other in the thickness direction. That is, when a thickness direction line (chain line in the figure) is drawn from the edge of the skin side projecting to the low basis weight portion 11 side, the thickness direction line is inclined at an angle intersecting the adjacent high basis weight portion 10. It is preferable to form the low basis weight portion 11 . Thereby, when the absorbent body 4 is planarly viewed from the skin side, the absorbent surface S facing the skin side becomes substantially the full width of the absorbent body 4 without leaving a gap at the low basis weight portion 11, so that the absorbent body 4 can be more reliably absorbed. Absorb body fluids. In addition, in order to form the low basis weight portion 11 inclined in the width direction with respect to the thickness direction of the absorbent body 4, it may be formed by stacking fibers, or a flat absorbent body in which the low basis weight portion 11 is not formed may be used. After forming by stacking, the low basis weight portion 11 may be formed by punching, opening processing, or the like.

Furthermore, as shown in FIG. 10(D), the absorber 4 is a laminated body in which a plurality of absorbers (two layers of absorbers 4a and 4b in the illustrated example) are laminated, and the absorber 4a of each layer , 11b and high basis weight portions 10a, 10b are formed in the absorbent bodies 4a, 4b, respectively. It may be formed so as not to That is, the high basis weight portion 10b of the other absorbent body 4b is arranged so as to overlap the low basis weight portion 11a of the one absorbent body 4a in the thickness direction, and the low basis weight portion 11b of the other absorbent body 4b is arranged to overlap with the low basis weight portion 11a of the other absorbent body 4b. The high basis weight portion 10a of the absorbent body 4a is arranged so as to overlap in the thickness direction. As a result, since the low basis weight portion 11 is covered with the high basis weight portion 10 of the absorbent of the adjacent layer, a gap is not formed by the low basis weight portion 11 when viewed from the skin side, and the entire surface of the absorbent body 4 is absorbed. It can be a surface, and the body fluid can be more reliably absorbed by the absorbent body 4. - 特許庁In this case, the stretchable member 6 may be arranged in each layer of the absorbers 4a and 4b, or two adjacent layers of absorbers may be paired and one stretchable member 6 may be arranged between these layers. Therefore, the low basis weight portion of the absorbent body joined on both sides by one stretchable member 6 may be made stretchable.

[Other form examples]
In the above embodiment, the liquid-permeable surface sheet 3 is arranged so as to straddle over the low basis weight portion 11. However, as shown in FIG. The liquid surface sheet 3 may be arranged in a concave shape. In order to form such a structure, the liquid-permeable surface sheet 3 is laminated on the skin side of the absorbent body 4 provided with the low basis weight portion 11 , and the surface of the liquid-permeable surface sheet 3 is applied to the low basis weight portion 11 . The liquid-permeable surface sheet 3 is depressed into the low basis weight portion 11 by applying pressure from the side, and heat is applied during this pressure to heat the liquid-permeable surface sheet 3 and the member interposed on the bottom surface of the low basis weight portion 11. The liquid-permeable surface sheet 3 is formed by fusing or bonding the liquid-permeable surface sheet 3 and a member interposed on the bottom surface of the low-basis area 11 by applying an adhesive to the bottom surface of the low-basis area 11 in advance. holds the shape of the depression of the low basis weight portion 11 . Thereby, the high basis weight part 10 can be made difficult to collapse.

DESCRIPTION OF SYMBOLS 1... Absorbent article for men, 2... Leak-proof sheet, 3... Liquid-permeable surface sheet, 4... Absorbent body, 5... Exterior sheet, 6... Elastic member, 7... Anti-slip layer, 10... High mesh area, 11 ... low basis weight portion, 13 ... skin side sheet, 14 ... non-skin side sheet, 15 ... filamentous elastic stretchable member

Claims (9)

A male absorbent article comprising an absorbent body and having a vertical direction and a width direction orthogonal thereto,
The absorbent body has a portion in which a high basis weight portion having a relatively high basis weight and a low basis weight portion having a relatively low basis weight are alternately arranged in the width direction while extending in the vertical direction. An elastic member having elasticity along the width direction is arranged in a stretched state over the entire surface of the absorbent article for men ,
The absorbent body is arranged in the middle part in the vertical direction of the absorbent article for men, and the upper side and the lower side of the absorbent body are provided with portions where the absorbent body is not arranged,
The stretchable member is characterized in that the stretching force of the vertical section where the absorbent body is arranged is relatively higher than the stretching force of the vertical section where the absorbent body is not arranged . Goods. 2. The absorbent article for men according to claim 1, wherein said low basis weight portion comprises a penetrating portion penetrating through said absorbent body or a recess portion with a bottom. The stretchable member is formed of a stretchable sheet whose material itself is stretchable, or formed of a sheet member in which a plurality of thread-like elastic stretchable members are arranged along the width direction and at intervals in the vertical direction. The absorbent article for men according to any one of claims 1 and 2. The stretchable member is formed by arranging a plurality of thread-like elastic stretchable members between a skin-side sheet and a non-skin-side sheet, and the skin-side sheet and the non-skin-side sheet are formed by separate sheets. 4. The absorbent article for men according to any one of claims 1 to 3 , wherein the absorbent article is formed by folding one sheet. 5. The absorbent article for men according to any one of claims 1 to 4 , wherein said stretchable member arranged in a region other than a region overlapping with said low basis weight portion is provided with non-stretchable means for deactivating stretchability. Goods. Claims 1 to 1, wherein a non-skin side of the absorbent article for men is provided with a non-slip layer for fixing with underwear, and the non-slip layer is provided in a region that does not overlap with the absorbent body in plan view. 5. The absorbent article for men according to any one of 5. The male according to any one of claims 1 to 6 , wherein the low basis weight portion is formed in a shape that gradually narrows from the skin side toward the non-skin side in a cross-sectional view along the width direction of the absorbent body. for absorbent articles. 7. The low-basis portion according to any one of claims 1 to 6 , wherein in a cross-sectional view along the width direction of the absorbent body, the low-basis-weight portion is inclined from the skin side toward the non-skin side in any one side of the width direction. Absorbent article for men. The absorbent body is composed of a laminate in which a plurality of absorbent bodies are laminated, and the low basis weight part and the high basis weight part are formed in each layer of the absorbent body, and the low basis weight part is formed between the absorbent bodies adjacent to each other in the thickness direction. 7. The absorbent article for men according to any one of claims 1 to 6 , which is formed so as not to overlap.

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