JP2009082477A - Absorbent article - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an absorbent article improving wearing property on the male genital organ. <P>SOLUTION: This absorbent article is provided with an absorbent sheet 1 formed by interposing an absorber 13 between a liquid permeable top sheet 11 and a liquid impermeable back sheet 12, and a liquid impermeable cover sheet 2 stuck to the liquid permeable top sheet 11 in a circumferential edge and forming a bag structure along with the absorbent sheet 1, wherein the cover sheet 2 has substantially Y-shaped splitting perforation lines. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an absorbent article for absorbing bodily fluids discharged from the body such as urine, sweat, feces, menstrual blood and the like.

Absorbent articles for body fluids that are considered to be worn on male genitals are well known.
This kind of absorbent article for men is well known in the form of a cylinder that covers a male genitalia and a sheet that is wound around the male genitals. (For example, patent documents 1-2).
The cylindrical one is used by inserting a male genitalia and has a high leakage prevention property. However, there is a disadvantage that it cannot be used for other than this use mode and is not versatile.
On the other hand, the sheet-like material can be used in the form of a sheet-like material because of its shape and is excellent in versatility, but is inferior in terms of occurrence of deviation and prevention of leakage as compared with the tubular material.
Furthermore, these conventional products all need to be worn with male genitals, and are particularly difficult to be worn by a third party such as a caregiver. In addition, the wearer may feel resistance to the caregiver holding male genitals, which is one of the problems of absorbent articles for men.
JP 2005-58272 A JP 2006-212453 A

  Thus, the main object of the present invention is to provide an absorbent article that can be easily worn on a male genitalia, and at the same time, it is necessary to achieve both versatility and prevention of urine leakage.

<Invention of Claim 1>
An absorbent sheet in which an absorber is interposed between the liquid-permeable top sheet and the liquid-impermeable back sheet;
A liquid-impervious cover sheet that is bonded to the liquid-permeable top sheet at a peripheral edge and forms a bag structure with the absorbent sheet;
The cover sheet has a perforation line for cleavage;
The tearing perforation line has a straight line portion arranged in a straight line at the sheet center portion of the cover sheet, and a bifurcated portion extending in a bifurcated manner from the end of the straight line portion toward the sheet edge. Absorbent article characterized.

(Function and effect)
In the present invention, an insertion port of a male genital is formed by the cleavage of the perforation line for cleavage, and the male genital can be inserted into a pocket between the liquid-permeable top sheet and the cover sheet.
And since the shape of the perforation line for tearing is a shape having a Y-shaped part formed by a straight part and a bifurcated part, it becomes a cylindrical bag shape by tearing only the bifurcated part. The shape can be easily inserted and the effect of preventing urine leakage is high.
Further, in such a cleavage form, one hand is placed on the side of the liquid-impervious backsheet of the absorbent sheet, and the liquid-permeable sheet surface is bent into a substantially V shape so that the imaginary line along the straight line is the bottom. In addition, the tongue portion formed by the cleavage of the bifurcated portion is picked with the other hand, the tip of the male genitalia is positioned at the insertion port formed by the cleavage of the bifurcated portion, and further inserted into the inside. By doing so, the male genital can be inserted into the bag without touching the male genital.
Further, when the straight part is also cleaved together with the crotch part, the liquid-permeable sheet surface of the absorbent sheet can be exposed and can be used as an absorbent pad.

<Invention of Claim 2>
The absorbent article according to claim 1, wherein the cover sheet is provided with an elastic elastic member along a perforation line for tearing.

(Function and effect)
Due to the contraction of the elastic elastic member, a three-dimensional space is easily formed between the cover sheet and the absorbent sheet, so that the male genital can be inserted more easily.

<Invention of Claim 3>
The absorbent article according to claim 2, wherein a stop hole having a width wider than a cut portion constituting the perforation line is formed at a predetermined position of the perforation line.

(Function and effect)
When the perforation perforation line is cleaved at a predetermined position of the perforation perforation line, it becomes difficult to continuously cleave beyond the stop hole at the predetermined position, and it is easy to obtain a desired cleaving shape and cleaving length. Become.

<Invention of Claim 4>
The absorbent article according to any one of claims 1 to 3, wherein elastic elastic members extending in a direction along the straight part are arranged on both side edges of the absorbent article.

(Function and effect)
Due to the contraction of the elastic elastic members at both side edges, the entire article becomes a boat shape, and the male genitalia is deformed into a shape that is easier to insert.

<Invention of Claim 5>
The absorbent article according to any one of claims 1 to 4, wherein a bifurcated portion is formed at both ends of the linear portion.

(Function and effect)
When all the perforation lines for cleavage are cleaved, the liquid-permeable sheet is exposed as a wide plane, and can be used in a highly versatile state of the sheet state.

<Invention of Claim 6>
The absorptive article according to claim 5 in which the angle formed by the two perforation lines for cleavage which constitute the forked part is different in the forked part at both ends of the straight part.

(Function and effect)
A bifurcated portion suitable for each of a bifurcated portion for forming a male instrument insertion opening and a bifurcated portion for forming a sheet is formed.

  As described above, according to the present invention, there is provided an absorbent article that can be easily attached to a male genitalia and has both versatility and prevention of urine leakage.

Next, embodiments of the present invention will be described in detail below with reference to the drawings.
The absorbent article X1 of the present invention has a four-sided closed bag structure in which a cover sheet 2 is bonded to the absorbent sheet 1 at its peripheral edge. As the overall shape, the illustrated rectangle is suitable because it is easy to manufacture, but is not limited thereto. However, at least the length in the longitudinal direction is preferably 300 mm or more in order to exhibit the function of inserting a male genital unit described later.
The absorbent sheet X1 of this embodiment has a layer structure in which an absorbent body 13 and a second sheet 14 are interposed between a liquid-permeable sheet 11 and a liquid-impermeable back sheet 12, and the liquid-permeable sheet 11 And the front and rear end portions and both side portions of the liquid-impervious sheet 12 extend outward from the absorbent body 13 and the second sheet 14, and the liquid-permeable sheet 11 further includes side edges of the liquid-impervious back sheet 12. It winds and is joined with respect to the liquid-impermeable back sheet 12 in the rolled part. The joining method is not particularly limited. According to known methods. For example, hot melt bonding, ultrasonic sealing, heat sealing (thermal fusion), heat pressing (thermocompression bonding), or a combination thereof can be used.

The liquid-permeable sheet 11 is, for example, a net-like sheet material obtained by plain weaving of a thread such as nylon or polyethylene terephthalate, a film sheet material having a large number of through holes, a film sheet material such as polyethylene or polypropylene, and a liquid-permeable material. Suitable are woven fabrics and non-woven fabrics, particularly non-woven fabrics. Nonwoven fabrics can be made from synthetic fibers such as polyethylene or polypropylene, synthetic fibers such as polyester and polyamide, regenerated fibers such as rayon and cupra, and natural fibers such as cotton. Spunlace method, spunbond method, thermal bond Processed by an appropriate processing method such as a method, a melt blown method, or a needle punch method can be used.
A layered nonwoven fabric such as an SMS nonwoven fabric, a point bond nonwoven fabric, a plastic film such as a polyethylene film, or a laminated nonwoven fabric obtained by laminating a plastic film and a nonwoven fabric may also be used.
The liquid-impermeable back sheet 12 is a known resin sheet such as polyethylene or polypropylene, in particular, a sheet is formed by kneading an inorganic filler in a resin such as polyethylene or polypropylene, and then stretched in a uniaxial or biaxial direction. A microporous resin sheet obtained by doing so is preferably used. The liquid-impermeable back sheet 12 is particularly preferably a laminate in which an exterior sheet made of a nonwoven fabric or the like is laminated on the outer surface of the resin sheet in order to improve the touch. The nonwoven fabric sheet that can be used for the exterior sheet is the same as that used for the liquid-permeable surface sheet 11.

The absorbent body 13 can be configured by enveloping an absorbent core in which absorbent polymer is dispersed in fibers such as piled pulp and nonwoven fabric with a permeable sheet such as crepe paper, nonwoven fabric sheet, and perforated sheet. .
Examples of the superabsorbent polymer include carboxymethyl cellulose, polyacrylic acid and salts thereof, acrylate polymer cross-linked product, starch-acrylic acid graft copolymer, starch-acrylonitrile graft copolymer hydrolyzate, polyoxyethylene cross-linked product Products, crosslinked products of carboxymethyl cellulose, polyethylene oxide, polyacrylamide and other partially crosslinked polymers, or a copolymer of isobutylene and maleic acid are preferably used. What added the blocking inhibitor in order to suppress the blocking property by moisture absorption of a product can also be used. In addition, the superabsorbent polymer has various forms such as powder, particles, granules, pellets, sol, suspension, gel, film, and nonwoven fabric. Any of them can be used in the present invention, and a particulate material is particularly preferably used.

The second sheet 14 is interposed between the absorbent body 13 and the liquid permeable sheet 11, and disperses the body fluid or the like taken in via the liquid permeable sheet 11 and moves to the absorbent body 13. This is to prevent the reverse return of the body fluid absorbed in the water. This second sheet is not always necessary. For example, crepe paper is preferably used as the second sheet 14.
On the other hand, the cover sheet 2 is formed to have the same size as or slightly smaller than the absorbent sheet 1 and is joined to the surface of the absorbent sheet 1 on the surface of the liquid-permeable sheet 11. The joining method is not particularly limited, and is a known method. For example, hot melt bonding, ultrasonic sealing, heat sealing (thermal fusion), heat pressing (thermocompression bonding), or a combination thereof can be used.

In this embodiment, the cover sheet 2 has a structure in which a hydrophilic nonwoven fabric sheet 21 and a water-repellent nonwoven fabric sheet 22 are laminated, and is liquid-impervious as a whole. The water repellent nonwoven fabric sheet 22 is positioned so as to face the liquid permeable sheet 11 of the absorbent sheet 1. In addition, it can change to the water-repellent nonwoven fabric sheet 22, and can also use sheet materials other than a nonwoven fabric similar to a film sheet or the said liquid-impermeable sheet.
Here, the hydrophilic nonwoven fabric sheet 21 is preferably a nonwoven fabric sheet such as air-through or spunbond, and the water-repellent nonwoven fabric sheet 22 is preferably a laminated nonwoven fabric such as SMMS.
Further, the cover sheet 2 is provided with appropriate elastic elastic members 25 and 26 described later between the sheets, and is configured to have elasticity at appropriate positions.

On the other hand, the cover sheet 2 is characteristically formed with a perforation line 30 for cleavage, and the absorbent article X1 of this embodiment is formed by the cleavage of the perforation line 30 for cleavage. It is comprised so that the contact to the liquid-permeable sheet 11 surface is attained.
In this embodiment, the perforation line 30 for tearing is formed by a substantially straight line portion 30A extending in the longitudinal direction at the center portion of the cover sheet 2, and a sheet edge from the end of the straight line portion 30A. And has a bifurcated portion 30B that extends in a bifurcated manner toward the top, and is substantially Y-shaped.
Accordingly, when only the bifurcated portion 30 </ b> B is cleaved, a substantially triangular insertion opening that allows male genitals to be inserted is formed in the space between the liquid-permeable sheet 11 and the cover sheet 2.
Furthermore, if the free piece formed by tearing the straight portion 30A is rolled up, the surface of the liquid-permeable sheet 11 is exposed and can be used as a flat absorbent pad. When used as a pad in this way, the free piece can achieve the same effect as a so-called barrier cuff for preventing side leakage by setting the extending direction of the straight portion to the front-rear direction during use.

Here, the straight portion 30A may have a slight meandering or zigzag shape, but it only has to extend in a certain direction to such an extent that it can be regarded as a straight line in relation to the ratio with the overall length. . The length L1 of the straight portion 30A is preferably about 160 to 420 mm.
The length of the bifurcated portion 30B is preferably about 30 to 210 mm, and the angle ∠α between the bifurcated portions may be less than 180 °, but is preferably in the range of 30 to 150 °. Particularly preferably, the angle is 90 to 120 °. If the angle ∠α formed by the fork is less than 30 ° or exceeds 150 °, an accident in which the perforated line is unintentionally broken or extended to an unintended portion is likely to occur.
The distance L2 between the end position of the bifurcated portion 30B and the longitudinal edge of the absorbent article is preferably about 20 to 150 mm. If the diameter is less than 10 mm, it is impossible to secure a hole diameter sufficient for male insertion. Moreover, if it exceeds 150 mm, a hole will become large too much and a fitting property will fall, and it will become easy to remove a male genitalia after mounting | wearing.

On the other hand, in the perforation line 30 for cleavage of this embodiment, stop holes 35 and 35 for appropriately stopping the chain of continuous cleavage at the time of cleavage and the cleavage to the perforation non-formation part at appropriate positions. Is provided.
The stop holes 35, 35 are holes that are wider than the cut portion that forms the tearing perforation line 30, and the perforation lines that are continuously split reach the stop holes 35, 35. By the way, it plays the role of a cushion to prevent the next tie part from being torn immediately.
In this embodiment, the stop holes 35, 35 are formed in the connecting portion between the straight portion 30A and the bifurcated portion 30B, the end portions of the bifurcated portion 30B and the straight portion 30A, and an appropriate intermediate portion of the straight portion 30A. By setting it to such a position, for example, when it is desired to cleave only the bifurcated portion 30B, the straight portion 30A is not intended to be cleaved unintentionally, and the cover sheet 2 is difficult to cleave beyond the end of the bifurcated portion 30B. Thus, only the forked portion 30B is easily cleaved. Further, when the linear portion 30A is cleaved, the adjustment that only the linear portion 30A having an appropriate length is cleaved, or the cleaving may be chained from the end of the linear portion 30A to the non-perforated portion. Will be prevented.
The specific tear strength at the perforation line 30 is adjusted by adjusting the tie length that is the connecting portion and the cut length that is the same dividing portion at the perforation line. This can be done by adjusting the tie cut ratio, which is the ratio between the length and the cut length.

On the other hand, since the cover sheet 2 of the present embodiment has a two-layer structure, the tearing perforation lines 30 of both sheets are arranged so as not to separate each other with the tearing of the perforation perforation lines 30. Are bonded by a hot melt adhesive (in the figure, the bonded portion by the hot melt adhesive is a knitted portion indicated by reference numeral 40).
On the other hand, the cover sheet 2 of the present embodiment is cleaved at the side edge portion of the first elastic elastic member 25 and the absorbent article X1 disposed in the vicinity of the perforation line for tearing and along the perforation line for tearing. The second elastic elastic member 26 arranged along the extending direction of the straight portion 30A of the perforation line 30 is fixed in an extended state.
When the bifurcated portion 30B of the tearing perforation line 30 is cleaved due to the presence of the first elastic elastic member 25, the insertion opening formed in the cover sheet 2 floats away from the absorbent sheet 1, The male genitalia is deformed to be more easily inserted between the cover sheet and the liquid-permeable sheet.

In the illustrated example, the first elastic elastic member 25 is arranged along the entire length of the perforation line 30 for cleavage, but it is not always necessary to be arranged over the entire length. In order to achieve such lifting, it may be provided in a range of 50 to 150 mm from the connecting portion of the forked portion 30B to the straight portion 30A toward the end of the forked portion 30B and the end of the straight portion 30A.
On the other hand, it is desirable to provide the second elastic elastic member 26 over the entire length of the absorbent article X1, and the second elastic elastic member 26 makes the entire absorbent article curved in the longitudinal direction and is easy to hold by hand. It is transformed into a shape that makes it easy to insert a container.
The first elastic elastic member 25 and the second elastic elastic member 26 do not need to have the same expansion / contraction force. Preferably, the first elastic expansion / contraction member 26 is more extended and fixed in a state having the expansion / contraction force. It is good to have. Thus, the three-dimensional insertion opening is more easily formed when the first elastic expansion / contraction member 25 expands / contracts more.

Here, as each of the first and second elastic elastic members 25 and 26, a rubber thread is typically used. As the thread rubber, those made of synthetic rubber or natural rubber and those mainly composed of natural rubber are suitable. In addition to the rubber thread, a material having rubber elasticity, which is formed (molded) into a thread shape, a string shape, a belt shape, a net shape, a foam shape, or the like, including a generally well-known elastomer resin can be used.
On the other hand, the hot-melt adhesive used for fixing these elastic elastic members 25 and 26, joining the hydrophilic nonwoven fabric sheet 21 and the water-repellent nonwoven fabric sheet 22 constituting the cover sheet, joining other sheets, and the like is of this kind. The known thing used for an absorbent article can be used. For example, styrene block copolymers, polyurethane block copolymers, polyester block copolymers, polyamide block copolymers, base polymers of copolymer blends, rosin resins, polyterpene resins, terpene phenols Resin, dicyclopentadiene-based petroleum resin, aliphatic petroleum resin, aromatic petroleum resin, copolymerized petroleum resin, alicyclic petroleum resin, xylene resin, elastomer, etc. Those containing at least a plasticizer component such as waxes and an antioxidant as constituent components are suitable.

<Second Embodiment>
In the present embodiment X2, the pattern of the perforation line 30 for cleavage is different from that of the first embodiment. Other configurations are the same as those in the first embodiment.
The tearing perforation line 30 in the first embodiment has a bifurcated portion 30B formed only from one end side of the straight portion 30A, but the tearing perforation line 30 in this embodiment is formed from both ends of the straight portion 30A. Bifurcated portions 30B and 30C extend respectively.
In this embodiment, the angles ∠α and ∠β do not have to be the same in each of the two forked portions 30B and 30C, and can be set to appropriate angles.
In this embodiment, when all the perforation lines are cleaved when used as a highly versatile absorbent pad, a wide range of liquid-permeable sheet surfaces can be exposed.
That is, the wide liquid-permeable sheet 11 is obtained by rolling up the free piece of the cover sheet 2 obtained by the cleavage of the straight portion 30A and the two forked portions 30B and 30C by tearing in a direction perpendicular to the straight portion 30A. The surface is exposed. Furthermore, the raised free piece exhibits a cuff-like effect and functions as a so-called side leakage prevention.
Of course, when it is used as an absorbent article for men to be used by inserting a male genitalia, only one of the two forks should be cleaved.

  The present invention can be used for a body fluid absorbent article.

It is a top view of the absorptive article of a 1st embodiment. It is the II-II sectional view. It is a top view of the absorptive article of a 2nd embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Absorbent sheet, 2 ... Cover sheet, 11 ... Liquid-permeable sheet, 12 ... Liquid-impermeable back sheet, 13 ... Absorber, 14 ... Second sheet, 21 ... Hydrophilic nonwoven sheet, 22 ... Water-repellent nonwoven sheet 25 ... 1st elastic elastic member, 26 ... 2nd elastic elastic member, 30 ... tearing-like perforation line, 30A ... straight part, 30B, 30C ... bifurcated part, 35 ... stop hole, L1 ... length of straight part, L2: Distance between the end of the bifurcated portion and the longitudinal edge of the absorbent article, 40: Adhesive portion with hot melt adhesive.

Claims (6)

An absorbent sheet in which an absorber is interposed between the liquid-permeable top sheet and the liquid-impermeable back sheet;
A liquid-impervious cover sheet that is bonded to the liquid-permeable top sheet at a peripheral edge and forms a bag structure with the absorbent sheet;
The cover sheet has a perforation line for cleavage;
The tearing perforation line has a straight line portion arranged in a straight line at the sheet center portion of the cover sheet, and a bifurcated portion extending in a bifurcated manner from the end of the straight line portion toward the sheet edge. Absorbent article characterized.   The absorbent article according to claim 1, wherein the cover sheet is provided with an elastic stretch member along a perforation line for cleavage.   The absorbent article according to claim 2, wherein a stop hole having a width wider than that of the cut portion constituting the perforation line is formed at a predetermined position of the perforation line.   The absorbent article according to any one of claims 1 to 3, wherein an elastic stretchable member extending in a direction along the straight line portion is disposed on both side edges of the absorbent article.   The absorbent article according to any one of claims 1 to 4, wherein a bifurcated portion is formed at both ends of the linear portion.   The absorptive article according to claim 5 in which the angle formed by the two perforation lines for tearing which constitutes a fork part is different in the fork part of both ends of a straight part.

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