TWI648037B - Absorbent article, and method of manufacturing same - Google Patents

Abstract

An absorbent article (1) having a longitudinal direction, a wide direction, and a thickness direction orthogonal to each other. a liquid permeable top sheet (20) that is in contact with the skin of the person to be attached, and a liquid permeable sheet that is placed in contact with the non-skin side surface of the top sheet (20) in the thickness direction ( 11). The aforementioned top sheet (20) contains an antibacterial agent. The liquid permeable sheet (11) also contains an antibacterial agent.

Description

Absorbent article, and method of manufacturing same

The present invention relates to an absorbent article such as a sanitary napkin or the like, and a method of producing the same.

Physiological sanitary napkins are known for absorbent articles that absorb excretion fluids such as menstrual blood, urine, and the like. The sanitary napkin has a long direction, a wide direction, and a thickness direction orthogonal to each other. In addition, the sanitary napkin has a liquid-permeable top sheet, a liquid-permeable intermediate sheet, an absorbent core, and a liquid-impermeable back sheet which are superposed in the thickness direction in this order. Further, Patent Document 1 discloses a space intercalating freshener between a top sheet and the intermediate sheet that abuts against the non-skin side of the top sheet.

[Previous Technical Literature] [Patent Document]

[Patent Document 1] Japanese Special Open 2010-234031

On the other hand, sanitary napkins also have the need for antibacterial functionality. Further, in this case, a configuration in which the antibacterial agent is placed in the space to obtain the cooling agent is considered as a reference example.

However, in the sanitary napkin of such a reference example, the above-mentioned top sheet which is in contact with the skin of the subject is free of an antibacterial agent. Therefore, the antibacterial action (inhibition of bacterial growth, etc.) is not effective for the excretion liquid remaining on the top sheet.

Moreover, the intermediate sheet that abuts against the non-skin side of the top sheet (for example, in the so-called second sheet or in the absence of the second sheet, the so-called core-clad sheet) may also have the possibility of residual excretion, but Such intermediate sheets also do not contain an antibacterial agent. Therefore, the antibacterial action is not effective for the excretion liquid remaining in the intermediate sheet.

That is, the sanitary napkin described above is not effective in achieving an antibacterial action in a wide range in the thickness direction thereof, and as a result, it is difficult to improve the antibacterial action of the sanitary napkin as a whole.

The present invention has been made in view of the above problems, and an object thereof is to achieve an antibacterial action in a wide range in the thickness direction of an absorbent article.

The main invention for achieving the above object is an absorbent article comprising: an absorbent article having a longitudinal direction, a wide width direction, and a thickness direction orthogonal to each other, wherein: a liquid-permeable top sheet that is in contact with the skin of the person to be attached, and a liquid-permeable sheet that is placed in contact with the non-skin side surface of the top sheet in the thickness direction, and the top The top sheet contains an antibacterial agent, and the liquid permeable sheet also contains an antibacterial agent.

Moreover, the method for producing an absorbent article has a liquid-permeable top sheet which has a long direction, a wide direction, and a thickness direction which are orthogonal to each other, and which has a liquid permeability which is in contact with the skin of the wearer. A method for producing an absorbent article comprising a liquid permeable sheet disposed in contact with a non-skin side surface of the top sheet in the thickness direction, wherein the base sheet of the top sheet is coated with an antibacterial agent; a substrate sheet of the liquid permeable sheet is brought into contact with a non-skin side surface of the base sheet coated with the top surface sheet of the antibacterial agent in the thickness direction; and a part of the antibacterial agent is removed from the top sheet The substrate sheet is transferred to the substrate sheet of the liquid permeable sheet.

Other features of the present invention will become apparent from the description of the specification and appended drawings.

According to the present invention, the antibacterial action can be achieved in a wide range in the thickness direction of the absorbent article.

1‧‧‧Physical sanitary napkins (absorbent articles)

1a‧‧ ‧ continuum of sanitary napkins

1w‧‧‧wing

10‧‧‧ absorber

10c‧‧‧Absorbent core

11‧‧‧First coated sheet (liquid-permeable sheet, base sheet of liquid-permeable sheet)

12‧‧‧2nd cover sheet (2nd sheet)

20‧‧‧ top sheet

20a‧‧‧Continuous sheet of top sheet (substrate sheet of top sheet)

20ar‧‧‧Sheet roll

20cw‧‧‧Central Department

20cw1‧‧‧Central Department

20e‧‧‧The outer periphery

20ew1‧‧‧ end

20w‧‧‧section

25‧‧‧ side flakes

25p‧‧‧section

30‧‧‧Back sheet

30a‧‧‧Continuous sheets of back sheets

Section 30c‧‧‧

30ew‧‧‧ end

30w‧‧‧section

40c‧‧‧Adhesive

40w‧‧‧Adhesive

50‧‧‧feeding device

53‧‧‧Antibacterial agent coating device

55‧‧‧Binder coating device

60‧‧‧embossing processing device

60d‧‧‧Upper roll

60u‧‧‧lower roller

65‧‧‧Circular seals

65d‧‧‧Upper roll

65u‧‧‧lower roller

70‧‧‧Mold cutter device

70d‧‧‧Upper roll

70u‧‧‧lower roller

72‧‧‧Chongdao

AR‧‧‧existing area (antibacterial agent coating area, coated area)

ARc‧‧‧Central Department

ARe‧‧‧ end

ARN‧‧‧ no area

AEML‧‧‧Area

EM‧‧·Squeeze Department

EMD‧‧‧ point press section

EML‧‧‧Linear press section

ED10‧‧·Squeeze Department

E25‧‧‧Crimping part (the part to be crimped)

HMA‧‧‧Binder

PHMA‧‧‧There is a part of the adhesive

PHMAN‧‧‧ adhesive does not exist in part

LM‧‧‧ Manufacturing line

CV‧‧‧belt conveyor

CVa‧‧‧belt conveyor

CVB‧‧‧Ring belt

P20ar‧‧‧ Feeding location

Pj20a‧‧ ‧ confluence location

P53‧‧‧ Coating location

P55‧‧‧ Coating location

Pj30a‧‧‧ confluence location

[Fig. 1] A schematic plan view of a sanitary napkin 1 as an example of the absorbent article of the present embodiment as seen from the skin side in the thickness direction.

Fig. 2 is a schematic plan view of the sanitary napkin 1 as seen from the non-skin side in the thickness direction.

Fig. 3 is a schematic exploded view showing the arrow III-III in Fig. 1 .

Fig. 4 is a schematic plan view of the absorbent body 10 as seen from the non-skin side in the thickness direction.

Fig. 5 is a schematic plan view of the sanitary napkin 1 showing the plane position of the presence region AR of the antibacterial agent in a dot pattern.

Fig. 6 is a schematic side view showing a manufacturing line LM of the sanitary napkin 1 of the present embodiment.

Fig. 7 is an explanatory view showing a portion where PHMA is present in the adhesive and a portion where PHMA is absent.

[ Fig. 8A] Fig. 8A is a schematic plan view of the sanitary napkin 1 according to the first modification of the embodiment as seen from the skin side in the thickness direction.

Fig. 8B is a schematic exploded view as seen from the arrow B-B in Fig. 8A.

[Fig. 9] A schematic plan view of the sanitary napkin 1 according to the second modification of the embodiment as seen from the skin side in the thickness direction.

According to the description of this specification and the accompanying drawings, at least The following matters are white.

An absorbent article comprising: an absorbent article in a longitudinal direction, a wide direction, and a thickness direction orthogonal to each other, characterized by having a liquid-permeable top sheet which is in contact with the skin of the subject And a liquid permeable sheet which is disposed in contact with the non-skin side surface of the top sheet in the thickness direction, wherein the top sheet contains an antibacterial agent, and the liquid permeable sheet also contains an antibacterial agent.

According to such an absorbent article, the top sheet also contains an antibacterial agent, and the liquid permeable sheet that abuts against the non-skin side surface of the top sheet also contains an antibacterial agent. Therefore, the antibacterial action can be effectively achieved by the excretion liquid remaining in the top sheet and the excretion liquid remaining in the excretion liquid of the liquid permeable sheet. Further, as a result, the antibacterial action can be achieved in a wide range in the thickness direction of the absorbent article.

In such an absorbent article, the amount of the antibacterial agent contained in the top sheet is more desirable than the amount of the antibacterial agent contained in the liquid permeable sheet.

According to such an absorbent article, it is possible to increase the antibacterial action on the top sheet, whereby the excretory liquid discharged to the absorbent article can achieve a strong antibacterial action at an early stage.

In such an absorbent article, it is desirable that the antibacterial agent contained in the top sheet and the antibacterial agent contained in the liquid permeable sheet are the same type of antibacterial agent.

According to such an absorbent article, when the types of the above-mentioned antibacterial agents are different from each other, the antibacterial agents may be in contact with each other to cause a reaction, and an antibacterial effect may be lowered.

In such an absorbent article, an absorbent core that absorbs liquid is disposed on the non-skin side in the thickness direction of the liquid permeable sheet, and the absorbent core also contains an antibacterial agent.

According to such an absorbent article, the absorbent core which is disposed on the non-skin side more than the liquid permeable sheet described above also contains an antibacterial agent. Therefore, the antibacterial action can be effectively achieved with respect to the excretion liquid held by the absorption of the absorbent core. Further, as a result, the antibacterial action can be achieved in a wider range in the thickness direction of the absorbent article.

In such an absorbent article, it is preferable that each of the end portions in the wide direction of the top sheet is formed with a non-existing region in which the antibacterial agent does not exist.

According to such an absorbent article, it is possible to suppress the skin of the wearer who is injured. In other words, since each end portion of the top sheet in the width direction is a portion that can touch the root portion of the leg in the crotch of the wearer, the skin of the wearer is particularly worn at the end portion. It is easy to hurt the skin. Further, if an antibacterial agent is present at the end portion, there is a case where the pain is promoted. In this regard, according to the above configuration, the non-existent region where the antibacterial agent does not exist is formed at the end portion. Therefore, the above-mentioned damage situation can be suppressed.

In such an absorbent article, wherein The end portion of the top sheet has a side sheet which is overlapped from the skin side in the thickness direction and protrudes outward from the end portion in the width direction, and the top sheet and the side sheet are formed of fibers. Further, it is desirable that the side sheet has a portion to be crimped at the end portion of the top sheet.

According to such an absorbent article, the pressure-bonded portion of the side sheet is made to have a higher fiber density depending on the pressure bonding. Therefore, in the manufacturing process, although the liquid antibacterial agent is easily accumulated in the pressed portion by the capillary phenomenon, in this case, the end portion of the top sheet at the pressed portion is formed with an antibacterial agent. A non-existent area where the agent does not exist. Therefore, it is possible to quickly avoid the situation in which the antibacterial agent is collected in the above-mentioned pressure-bonded portion of the side sheet provided on the skin side of the top sheet, and as a result, it is possible to effectively avoid the injury of the object to be used due to the cause of the antibacterial agent. The state of the skin.

In the absorbent article, the liquid permeable sheet has a colored portion colored in a color different from a color of the material of the liquid permeable sheet, and the colored portion is provided from the top sheet side in the thickness direction. It is considered to be ideal through the aforementioned top sheet.

According to such an absorbent article, the colored portion of the liquid permeable sheet can be visually recognized from the top sheet side through the top sheet. Therefore, it is possible to make the impression that the absorbent article is an antibacterial specification when the colored portion is seen.

In such an absorbent article, wherein An absorbent core that abuts against a non-skin side surface of the liquid permeable sheet in the thickness direction to absorb a liquid, and a second sheet that abuts against a non-skin side surface of the absorbent core in the thickness direction; In the press section, the top sheet is pressed together with the liquid permeable sheet, the absorbent core, and the second sheet from the skin side in the thickness direction, and an antibacterial agent is preferably present in the press portion.

According to such an absorbent article, the press portion is formed by pressing from the skin side in the thickness direction. Therefore, the excretion liquid in the press section is easily accumulated. However, in this regard, an antibacterial agent is present in the press section. Therefore, the antibacterial action can be effected even for the excretion liquid accumulated in the press section.

In the absorbent article, the liquid permeable sheet and the second sheet are each formed of fibers, and the fiber density (g/cm ³ ) of the liquid permeable sheet and the second sheet are compared in the press portion. When the fiber density (g/cm ³ ), the fiber density of the second sheet is large as desired.

According to such an absorbent article, in the above-described press section, the fiber density of the second sheet is large. Therefore, in the manufacturing process, the antibacterial agent of the liquid permeable sheet is likely to migrate to the second sheet by capillary action, and as a result, the antibacterial agent is present in a wide range in the thickness direction of the press portion. Therefore, for the drainage liquid accumulated in the press section The antibacterial effect is achieved more effectively.

Moreover, the method for producing an absorbent article has a liquid-permeable top sheet which has a long direction, a wide direction, and a thickness direction which are orthogonal to each other, and which has a liquid permeability which is in contact with the skin of the wearer. A method for producing an absorbent article comprising a liquid permeable sheet disposed in contact with a non-skin side surface of the top sheet in the thickness direction, wherein the base sheet of the top sheet is coated with an antibacterial agent; a substrate sheet of the liquid permeable sheet is brought into contact with a non-skin side surface of the base sheet coated with the top surface sheet of the antibacterial agent in the thickness direction; and a part of the antibacterial agent is removed from the top sheet The substrate sheet is transferred to the substrate sheet of the liquid permeable sheet.

According to such a method for producing an absorbent article, it is possible to produce an absorbent article having a size of an antibacterial agent in each of the top sheet and the liquid permeable sheet that abuts on the non-skin side surface of the sheet. Therefore, the same effects as those of the aforementioned absorbent article can be obtained.

In the method for producing an absorbent article, the coating is preferably applied to the non-skin side surface of the base sheet of the top sheet.

According to the method for producing an absorbent article, since the antibacterial agent is applied to the non-skin side surface of the base sheet of the top sheet, a part of the antibacterial agent can be quickly moved to the above-mentioned liquid which is in contact with the non-skin side surface. Transmissive sheet.

In the method for producing an absorbent article, the coating and the abutting contact are performed by applying an adhesive to the non-skin side surface, and the abutting is a base sheet of the liquid permeable sheet. The non-skin side surface of the base sheet of the top sheet is fixed to the non-skin side surface of the top sheet, and the anti-bacterial agent is applied to the non-skin side surface, and the adhesive present portion and the adhesive are present in the adhesive layer. The absence of an adhesive that is not present is partially desirable.

According to the method for producing an absorbent article, in the above-mentioned adhesive present portion, the migration of the antibacterial agent to the base sheet of the liquid permeable sheet is suppressed, and the antibacterial agent is not inhibited in the absence of the above-mentioned adhesive. The migration of the substrate sheet of the liquid permeable sheet allows the migration to proceed rapidly. Therefore, the antibacterial agent can be contained in both the base sheet of the top sheet and the base sheet of the liquid permeable sheet.

In the method for producing an absorbent article, it is desirable that the ratio of the portion in which the above-mentioned adhesive is not present in the region where the antibacterial agent is applied is larger than the ratio of the portion in which the adhesive is present in the region.

According to such a method for producing an absorbent article, since the proportion of the portion where the adhesive is not present is large, the migration of the antimicrobial agent to the base sheet of the liquid-permeable sheet can be more reliably performed. As a result, it is possible to more reliably produce an absorbent article having a size in which the top sheet and the liquid permeable sheet contain an antibacterial agent.

In the method for producing an absorbent article, the antibacterial agent is a liquid, and the abutting is performed before the antibacterial agent applied to the base sheet of the top sheet is dried.

According to such a method for producing an absorbent article, a part of the antimicrobial agent of the base sheet of the top sheet can be reliably transferred to the base sheet of the liquid permeable sheet.

In the method for producing an absorbent article, after the abutting, the base sheet of the top sheet and the base sheet of the liquid-permeable sheet are pressed together in the thickness direction as desired.

According to such a method for producing an absorbent article, a part of the antimicrobial agent of the base sheet of the top sheet can be more reliably transferred to the base sheet of the liquid permeable sheet.

In the method for producing an absorbent article, the base sheet of the top sheet and the base sheet of the liquid permeable sheet are each formed of fibers, and the abutting is a base sheet of the liquid permeable sheet. fiber density (g / cm ³⁾ density of the fiber sheet than the top surface of the base sheet (g / cm ³⁾ is more desirable.

According to the method for producing an absorbent article, the fiber density of the base sheet of the liquid permeable sheet is larger than the fiber density of the base sheet of the top sheet. Therefore, the antibacterial agent applied to the substrate sheet of the top sheet can be quickly moved up according to the capillary phenomenon. The migration of the substrate sheet of the liquid permeable sheet is described. Further, according to this, it is possible to more reliably produce an absorbent article having a size in which the top sheet and the liquid permeable sheet contain an antibacterial agent.

In the method for producing an absorbent article, the absorbent core having a liquid absorbing property is provided on the non-skin side in the thickness direction of the base sheet of the liquid permeable sheet, and the coating is absorbed as described above. The core further applies the antibacterial agent to the base sheet of the top sheet in the width direction and the longitudinal direction, and the migration is performed by moving a part of the antibacterial agent through the substrate sheet of the liquid permeable sheet. It is desirable to the aforementioned absorbent core.

According to such a method for producing an absorbent article, the antibacterial agent is applied to the base sheet of the top sheet in a direction in which the absorbent core protrudes in the width direction and the longitudinal direction. Therefore, if a part of such an antibacterial agent migrates to the absorptive core, it is a state in which the whole-domain antibacterial agent exists in the wide direction and the longitudinal direction in the absorptive core. Therefore, even if the excretion liquid is absorbed at any position of the absorbent core, the antibacterial action can be achieved for the absorbed excretion liquid.

In the method for producing an absorbent article, the absorbent core having a liquid absorbing property is provided on the non-skin side in the thickness direction of the base sheet of the liquid permeable sheet, and the coating is absorbed as described above. The core is further coated with the antibacterial agent on the base sheet of the top sheet, and the migration is performed by allowing a part of the antibacterial agent to pass through the liquid. It is desirable that the substrate sheet of the sheet is transferred to the aforementioned absorbent core.

According to the method for producing an absorbent article, the region in which the antibacterial agent is applied to the base sheet of the top sheet does not protrude from the non-skin side with the core so as not to protrude more than the absorbent core in the wide direction. The area of the cloth. Therefore, in various devices on the non-skin side of the base sheet of the top sheet, the non-skin side of the same sheet can be effectively replaced by the core contacting the above-mentioned device, and the non-skin side contact with the sheet after the application of the antibacterial agent can be effectively avoided. A problem such as corrosion causing the cause of the antibacterial agent.

In the method of producing an absorbent article, the abutting is performed at a joining position where the conveying path of the base sheet of the top sheet and the conveying path of the base sheet of the liquid permeable sheet merge. The feeding position of the base sheet of the top sheet is set at a position on the upstream side of the coating direction at a position where the coating position of the antibacterial agent is applied, and the feeding position of the base sheet from which the top sheet is fed from the sheet roll is set. It is desirable that the aforementioned coating position in the substrate sheet conveying path of the face sheet is closer to the above-described joining position than the feeding position.

According to such a method for producing an absorbent article, the transport length of the base sheet of the top sheet after the application of the antibacterial agent can be shortened. Therefore, it is possible to effectively prevent the various devices of the manufacturing line from being contaminated by contact with the antibacterial agent applied to the base sheet of the top sheet.

===This embodiment ===

Fig. 1 to Fig. 4 show an example of the absorbent article of the embodiment. An illustration of the physiological cotton 1 for physiology. FIG. 1 is a schematic plan view of the sanitary napkin 1 seen from the skin side in the thickness direction, and FIG. 2 is a schematic plan view of the sanitary napkin 1 seen from the non-skin side in the thickness direction. 3 is a schematic exploded view of the arrow III-III in FIG. 1 . In addition, FIG. 4 is a schematic plan view of the absorber 10 seen from the non-skin side in the thickness direction.

As shown in FIGS. 1 and 3, the sanitary napkin 1 is a sheet-like member having a vertically long shape in plan view in the longitudinal direction, the wide direction, and the thickness direction. In addition, the sanitary napkin 1 is a top sheet 20 in which a liquid permeability is laminated from the skin side to the non-skin side in the thickness direction, a liquid-absorbent absorbent body 10, and a liquid-impermeable back sheet 30. . Further, each of the members 20, 10, and 30 is joined to a member adjacent to the thickness direction by an adhesive HMA such as a hot-melt adhesive. Further, as for the application pattern of the adhesive HMA, an Ω pattern, a spiral pattern, a stripe pattern, or the like can be exemplified, and the other adhesive HMA which appears later is also the same.

As shown in Fig. 1, the planar dimensions of the top sheet 20 and the back sheet 30 are set to be larger than the plane size of the absorbent body 10. Therefore, the outer peripheral edge portions 20e and 30e (portions of the dot patterns in FIG. 1) of the two sheets 20 and 30 protrude outward from the absorber 10 in the outer direction in the longitudinal direction and in the wide direction. Then, the outer peripheral edge portions 20e, 30e are bonded to each other by pressure bonding or the like, whereby the absorbent body 10 is held between the two sheets 20, 30.

Further, in this example, the planar shapes of the two sheets 20, 30 are set to be identical to each other. Further, the two sheets 20, 30 are formed in a shape in which substantially the central portion in the longitudinal direction protrudes toward both sides in the width direction, such a protruding shape The portions 20w and 30w function as the so-called wing portions 1w and 1w when the napkin 1 is placed on the undergarment (not shown). That is, as shown in Fig. 2 and Fig. 3, the back sheet 30 is fixed to the non-skin side surface of the portion 30w of each wing portion 1w, and the sanitary napkin 1 is fixed to the adhesive portion 40w for the undergarment to form a substantially rectangular shape with a suitable adhesive. . Further, the adhesive portion 40c of the same purpose is formed in a plurality of strips along the longitudinal direction by a suitable adhesive in the portion 30c between the wing portions 1w and 1w in the non-skin side surface of the back sheet 30. However, the arrangement pattern of the adhesive portions 40w and 40c is not limited to this.

As an example of the material of the top sheet 20, a suitable non-woven fabric such as a hot air non-woven fabric may be used. In this example, a hot air non-woven fabric is used. But it is not limited to this. In other words, a sheet other than the above may be used as long as it is a liquid permeable flexible sheet. Further, as an example of the material of the back sheet 30, a suitable resin film such as polyethylene (PE) may be used. In this example, a PE film is used. But it is not limited to this. In other words, a sheet other than the above may be used as long as it is a liquid-impermeable soft sheet.

Further, as shown in Fig. 1, a plurality of press portions EM, EM, ... are formed on the skin side of the top sheet 20 from the skin side, whereby the top sheet 20 and the absorbent body 10 are pressed together in the thickness direction. And increase the degree of bonding. Further, in this example, two types of press portions EML and EMD are formed as such press portions EM. One of the press portions EM is a linear press portion EML. Further, the linear press portions EML, EML, . . . are formed continuously along the outer peripheral edge portion of the absorber 10, thereby forming a substantially annular shape that is long in the longitudinal direction as a whole. On the other hand, the other side of the pressure The press section EM is a point-shaped press section EMD. Further, the dot-shaped press portions EMD, EMD, ... are formed by being dispersed in the slightly closed region AEML in which the plurality of linear press portions EML, EML, ... are partitioned on the top sheet 20. Further, in this example, the planar shape of each of the dot-shaped press portions EMD is set to a circular shape having a diameter of 1 mm, and the arrangement pattern of the press portions EMD, EMD, ... is arranged in a staggered arrangement pattern, but it is not Limited to this. In other words, the dot-shaped press section EMD and the linear press section EML are not possible.

As shown in FIG. 3 and FIG. 4, the absorber 10 has an absorptive core 10c, a first covering sheet (corresponding to a liquid permeable sheet) 11, and a second covering sheet (corresponding to a second sheet) 12, and the absorbent The core is an example in which a liquid absorbing fiber or the like is formed in a plan view and a vertically long shape which is long in the longitudinal direction, and the first cover sheet is in contact with the skin side surface of the core 10c and must be covered. The core 10c has a substantially planar shape, and the second cover sheet is in contact with the non-skin side surface of the core 10c and must be covered so as to have a substantially planar shape with the core 10c. Further, as shown in FIG. 3, each of the sheets 11 and 12 is joined to the absorbent core 10c by an adhesive HMA such as a hot-melt adhesive, and is integrated, whereby each of the sheets 11 and 12 prevents the absorbent core 10c. Unnecessary deformation such as distortion, aliasing, etc.

The absorbent core 10c is, for example, a cellulose-based water absorbent fiber as a liquid absorbent fiber, and has a basis weight in the range of 100 (g/m ² ) to 400 (g/m ² ). In this example, although pulp fibers are used as an example of the water-absorbent fiber, it is not limited thereto. For example, rayon fibers may be used, and liquid absorbent fibers other than the above may also be used.

Further, in this example, the core 10c is, in addition to the liquid absorbing fiber, a highly absorbent polymer (so-called SAP) as an example of the liquid absorbing granular material, for example, at a basis amount of 5 (g/m ² ). The range of 50 (g/m ² ) may be omitted.

In this example, for example, a hot air non-woven fabric having a basis weight of 10 (g/m ² ) to 70 (g/m ² ) is used as the first covering sheet 11, but it is liquid-permeable and flexible. The sheet is not limited to this. That is, other types of non-woven fabrics may be used, or thin paper or the like may be used. Further, in the second covering sheet 12, for example, an SMS (spunbond/meltblown/spunbond) nonwoven fabric is used, but any soft sheet is not limited thereto, that is, other types may be used. Non-woven fabric or thin paper or the like may be used, in other words, the second cover sheet 12 may be omitted.

As shown in FIG. 4, such an absorbent body 10 is also pressed to form a somewhat pressurizing portion ED10 from the non-skin side. In other words, in this example, since the absorber 10 has the first covering sheet 11 and the absorbent core 10c and the second covering sheet 12, the above-described press is formed by pressing the three together in the thickness direction. Department ED10. Further, the rigidity is increased by this, and as a result, unnecessary deformation such as distortion can be suppressed. Further, in this example, the planar shape of the press portion ED10 is set to a circular shape having a diameter of 1.2 mm, and the arrangement pattern of the press portions ED10, ED10, . . . is set to a staggered pattern, but is not limited thereto. Further, the maximum value of the thickness of the absorber 10 in which the press portion ED10 and the press portions EML and EMD are formed is, for example, It can be controlled in the range of 0.5mm~5mm, but it is not limited to this. In the present embodiment, the top sheet 20 of FIG. 3 and the first covering sheet 11 as an example of a liquid permeable sheet that abuts against the non-skin side surface of the top sheet 20, the absorbent core 10c, and The second covering sheet 12 as an example of the second sheet that is in contact with the non-skin side surface of the core 10c contains an antibacterial agent.

Therefore, the excretion liquid remaining in the top sheet 20, the excretion liquid remaining in the first covering sheet 11, the excretion liquid held by the absorbent core 10c, and the excretion liquid remaining in the second coating sheet 12 are discharged. The liquid can effectively achieve the antibacterial effect. Further, as a result, the antibacterial action can be achieved in a wide range in the thickness direction of the sanitary napkin 1.

Further, in this example, the same type of antibacterial agent can be used for any of the sheets 20, 11, 12 and the absorbent core 10c. Therefore, it is possible to prevent a problem that may occur due to the difference in the type of the antibacterial agent among the members 20, 11, 12, and 10c. For example, it is possible to prevent the antibacterial agents of different types from coming into contact with each other to cause a reaction, etc., thereby reducing the antibacterial effect. Case. But it is not limited to this. In other words, the type of the antibacterial agent can be made different for each of the members 20, 11, 12, and 10c, as long as the plurality of antibacterial agents are selected without causing a decrease in the antibacterial action even if they are not in contact with each other.

For such an antibacterial agent, for example, an antibacterial liquid produced by dilute a chlorodimethylammonium chloride solution can be diluted with a suitable solvent such as water. Specifically, the aqueous solution of the dimethyl dimethylammonium chloride is diluted to 5%, and the ethanol and water are mixed at a ratio of 0.25%, 10%, and 89.75%, respectively, whereby the above-mentioned antibacterial liquid can be produced, in this case, Use this antibacterial liquid. And, the guard When the raw cotton 1 is supplied to the market, the solvent such as water evaporates, whereby the residual antibacterial components such as ammonium chlorocarbonate are formed in the inside of the sheets 20, 11, 12 and the absorbent core 10c. The state underneath. It is to be noted that the above-mentioned blending ratio and blending composition are an example and are not limited thereto. In other words, the antibacterial liquid can be produced by blending ratios and blending components other than the above. Further, in addition to the above-described antibacterial liquid, cetylpyridinium chloride, bensinin, polyaminopropyl biguanide, p-hydroxybenzoic acid ester or the like may be used as an antibacterial agent.

Here, the magnitude relationship between the amount of the antibacterial agent (the amount (g) remaining after the solvent evaporates) of each of the sheets 20, 11, 12 and the absorbent core 10c is, in this case, the top sheet 20 is formed at the most. Then, the number of the first covering sheets 11 is large, and the number of the absorbent cores 10c is large, and the second covering sheets 12 are the smallest.

Moreover, as long as the amount (g) of the antibacterial agent contained in the top sheet 20 is set to the maximum, the antibacterial action on the top sheet 20 can be improved. Moreover, it is possible to achieve a large antibacterial action on the excretion liquid discharged to the sanitary napkin 1 at an early stage, and as a result, the sanitary napkin 1 as a whole can achieve high antibacterial properties.

But it is not limited to this. For example, the absorbent core 10c may also contain the most antibacterial agent. Moreover, in the end, the absorbent core 10c which is retained for most of the longest period of the excretion liquid can achieve a high antibacterial action on the excretory liquid. Therefore, at this time, the sanitary napkin 1 as a whole can also achieve high antibacterial properties.

By the way, using the chlorinated dimethylammonium chloride solution When the antibacterial liquid is used as an antibacterial agent, the determination of whether or not each of the sheets 20, 11, 12 and the absorbent core 10c contains an antibacterial agent can be carried out in the following manner. First, after the sanitary napkin 1 is decomposed into units of the respective sheets 20, 11, 12 and the absorbent core 10c, bromophenol blue is used as an agent for inspection for each of the sheets 20, 11, 12 and the absorbent core 10c. The solution (mixed with 0.1 mol/L sodium hydroxide reagent 50 mL and 0.05% bromophenol blue aqueous solution 20 mL) was sprayed to each member 20, 11, 12, 10c to be inspected, respectively. Further, when the color of the reagent changes from purple to blue, it can be judged that the members 20, 11, 12, and 10c contain an antibacterial agent. Alternatively, a bromophenol blue acidic solution (mixing 0.2 mol/L sodium acetate 7.5 mL, 0.2 mol/L acetic acid 92.5 mL, and 0.1% bromophenol blue ethanol solution 2 mL) may be used instead of the above reagent. When the color of the reagent changes from yellow to blue, it can be determined that the above-mentioned antibacterial agent is contained. Further, depending on the case, the magnitude relationship of the amount of the antibacterial agent may be determined based on the concentration of the changed color.

Fig. 5 shows the existence region AR of the antibacterial agent in the plane position defined by the broad side direction and the long side direction in a dot pattern. In this case, basically, the existing region AR is almost the same across the sheets 20, 11, 12 and the absorbent core 10c. Therefore, this represents the description of the existence area AR of the antibacterial agent in the top sheet 20.

In this case, the existence region AR of the antibacterial agent is the entire length in the longitudinal direction of the top sheet 20. However, the width direction is not set to the full length, that is, the center portion 20cw in the width direction is set, but the end portions 20ew and 20ew in the width direction are not set. Moreover, it is possible to effectively suppress the skin that hurts the wearer's skin during the day. condition. The details are as follows.

First, since each end portion 20ew of the top sheet 20 in the wide direction is a portion that can hit the root of the leg in the nip of the wearer, the end portion 20ew particularly sharpens the user. The skin is easily damaged by the skin. Therefore, if the antibacterial agent is present at the end portion 20ew, the damage may be promoted. However, in this case, the end portion 20ew is provided as a non-existing region ARN in which the antibacterial agent does not exist. Therefore, the above-described damage can be suppressed.

But it is not limited to this. That is, the existence region AR of the antibacterial agent may be set to the entire length of the top sheet 20 in the width direction.

Moreover, in the example of FIG. 5, this presence area AR is set in the range which protrudes toward the width direction and the longitudinal direction more than the absorptive core 10c. Therefore, when the absorbent core 10c is absorbed, even if it is absorbed at any position in the wide direction and the long direction, the excretion liquid can also achieve an antibacterial action against the excretion liquid. Moreover, the sanitary napkin 1 as a whole can achieve high antibacterial properties.

Further, in this example, in the presence region AR, the antibacterial agent is present in an approximately equal distribution, but is not limited thereto. In other words, the central portion ARc in the wide direction in the presence region AR may have more antibacterial agents in the wider end portions ARe and ARe. Moreover, in this case, the antibacterial action can be more effectively achieved with respect to the excretion liquid having a large discharge amount in the central portion ARc in the wide direction.

On the other hand, in this case, such an antibacterial agent does not uniformly exist in the thickness direction of the top sheet 20. That is, as shown in Figure 3. The thickness direction of the top sheet 20 is such that the non-skin side portion has more antibacterial agent bias than the skin side portion. Moreover, such a situation can also contribute to the prevention of the skin of the person who is wearing the object. But it is not limited to this. In other words, when an antibacterial agent of a type which does not adversely affect the skin is used, the antibacterial agent may be present almost uniformly over the entire length of the top sheet 20 in the thickness direction, or may be in the top sheet 20 In the thickness direction, the amount of the antibacterial agent is set to be larger on the skin side than on the non-skin side.

Further, in this example, as described above with reference to Fig. 1, the top sheet 20 and the absorbent body 10 are pressed together from the skin side in the thickness direction, whereby a dot-shaped press portion EMD having a concave shape and a linear shape are formed. The press section EML may have an antibacterial agent in the press sections EMD and EML. Therefore, when the excretion liquid is discharged on the skin side surface of the top sheet 20, the excretion liquid which is likely to remain in the press portions EMD and EML due to the shape of the depression can quickly and effectively achieve the antibacterial action. Moreover, such a situation is also effective in contributing to the high antibacterial property of the sanitary napkin 1 as a whole.

In addition, it is desirable to compare the distribution density (g/cm ³ ) of the fibers (hereinafter referred to as fiber density (g/cm ³ )) of the first covering sheet 11 in the press portions EMD and EML with the second coated sheet. When the fiber density (g/cm ³ ) is 12, the fiber density of the second covering sheet 11 may be increased. In addition, as a result, in the manufacturing line LM of the sanitary napkin 1 to be described later, the liquid antibacterial agent can be easily moved to the second covering sheet 12 by capillary action, and as a result, the antibacterial agent can be formed in the press portions EMD and EML. The existence of a wide range of thickness directions. Further, by this, the antibacterial action can be more effectively achieved for the excretion liquid accumulated in the press portions EMD and EML.

Further, the respective values of the fiber densities (g/cm ³ ) of the respective sheets 20, 11 and 12 and the absorbent core 10c of the press portions EMD and EML are, for example, the respective members 20, 11, and 12 to be calculated. The basis weight (g/m ² ) of the press portions EMD and EML of 10c is divided by the thickness of each of the members 20, 11, 12, and 10c of the press portions EMD and EML, and is obtained as a divided value.

Further, it is preferable that the first cover sheet 11 has a colored portion (not shown) colored in a color different from the color of the material. In this example, the first cover sheet 11 is a non-woven fabric, and since the material color is a white color, the green colored portion has a color different from that of the white color. Moreover, in this example, for the purpose of improving the visibility of the colored portion, the colored portion is formed over the entire skin side surface of the first covering sheet 11. Moreover, by this, it is possible to make the impression that the sanitary napkin 1 has an antibacterial specification when the green colored portion is seen. However, the color of the colored portion is not limited to green at all. In other words, as long as the color of the colored portion can be produced as an image having an antibacterial specification, the color other than the color can be colored. For example, other green colors such as yellowish green and dark green can be used. It can also be a blue color. Moreover, the formation target region of the colored portion is not limited to the entire skin side surface of the first cover sheet 11 as described above. For example, a part of the side surface of the skin may be formed as a colored portion.

Figure 6 is a manufacturing line LM of the sanitary napkin 1 of the present embodiment. Sketchy side view.

In the manufacturing line LM, first, a plurality of absorbers 10, 10, ... which are formed in the lower direction of the conveyance direction at a predetermined pitch P1 are conveyed on the conveyance path of the belt conveyor CV or the like. In other words, at the time of the formation of the absorbent body 10, the first covering sheet 11 formed on the skin side surface of the absorbent core 10c is joined by the hot-melt adhesive HMA or the like, and the non-skin side is formed. 2 The coated sheet 12 has been joined by a hot-melt adhesive HMA or the like.

Further, at a predetermined merging position Pj20a in the conveyance path, a plurality of top sheets 20, 20, ... a continuous sheet 20a of a top sheet continuous in the longitudinal direction (corresponding to a "substrate sheet of the top sheet") In this case, the continuous sheet 20a and the first covering sheet 11 (corresponding to the base sheet of the liquid permeable sheet) of the absorbent body 10 are superposed and fixed. Then, it is integrated and transported in the transport direction.

Further, such a continuous sheet 20a of the top sheet is carried into the manufacturing line LM in the form of, for example, a sheet roll 20ar wound in the continuous direction, but the line LM sheet roll 20ar is supported by the feeding device 50. . Further, the continuous sheet 20a of the top sheet fed from the sheet feeding position P20ar is conveyed to the above-described merging position Pj20a in the continuous direction as a conveying direction on an appropriate conveying path, but the setting is When the application position P53 of the antibacterial agent of the transport path is applied, the antibacterial agent is applied to the continuous sheet 20a. That is, the antibacterial agent applying device 53 is disposed in the vicinity of the application position P53, and from the position 53 to the non-skin side of the sheet 20a from the device 53 The above-mentioned antibacterial liquid was sprayed as an antibacterial agent in a spray form.

Moreover, the antibacterial agent at the time of application is liquid as mentioned above. Therefore, the coated antibacterial agent is diffused into the thickness direction of the sheet 20a by the fibers which are transmitted to the continuous sheet 20a, whereby not only the non-skin side of the sheet 20a but also the center position in the thickness direction or the span There is a state in which the antibacterial agent is present at a position closer to the muscle side than this.

As can be seen from Fig. 6, the application position P53 of the antibacterial agent in the conveyance path of the continuous sheet 20a of the top sheet is closer to the above-described joining position Pj20a than the feeding position P20ar of the sheet roll 20ar. Therefore, the transport length of the continuous sheet 20a to the joining position Pj20a after the application of the antibacterial agent can be shortened, and as a result, it is possible to effectively prevent the contact with the antibacterial agent applied to the continuous sheet 20a of the top sheet and to cause staining. The case of various devices (not shown) of the line LM.

On the other hand, the continuous sheet 20a to which the antibacterial agent is applied is set to the application position P55 of the hot-melt adhesive HMA which is set downstream of the conveyance direction than the above-described application position P53. Further, when it passes, the hot melt adhesive HMA is applied to the non-skin side of the sheet 20a from the adhesive application device 55 disposed near the position P55. Further, at this time, the adhesive HMA is applied in a predetermined pattern such as a stripe pattern. Therefore, as shown in Fig. 7, the antibacterial agent application region AR (the same as the above-described existence region AR) on the non-skin side as the region coated with the antibacterial agent is formed with the adhesive present portion PHMA in the presence of the adhesive HMA, and There is no part of PHMAN in the absence of the adhesive. Further, this is the first coated sheet of the antibacterial agent with the continuous sheet 20a of the top sheet 11 is related to mobility, and about this post-narration.

Further, the continuous sheet 20a to which the top sheet of the antibacterial agent and the adhesive HMA is applied is joined to the conveyance path of the absorbent body 10 at the joining position Pj20a as described above, whereby the continuous sheet 20a is fixed to the absorbent body 10 The first covered sheet 11 is.

Further, at this time, as shown in FIG. 6, the non-skin side surface of the continuous sheet 20a of the top sheet abuts on the skin side surface of the first covering sheet 11 of the absorbent body 10, but is formed on the non-skin side surface of the continuous sheet 20a. The antibacterial agent coating region AR, and as shown in Fig. 7, the coating region AR has an adhesive present portion PHMA and an adhesive non-existing portion PHMAN. Therefore, PHMA inhibits the migration of the antibacterial agent to the first covering sheet 11 in the presence of the adhesive agent. On the other hand, in the absence of the portion PHMAN of the adhesive agent, the migration of the antibacterial agent to the first covering sheet 11 is less likely to be hindered, and the rapid progress can be made. The move. Therefore, the antibacterial agent can be surely contained in both the continuous sheet 20a of the top sheet and the first covering sheet 11.

Further, part of the antibacterial agent that has migrated to the first covering sheet 11 is transferred to the absorbent core 10c, and a part of the antibacterial agent that has migrated to the core 10c is transferred from the core 10c to the second covering sheet 12, and as a result, As described above, the top sheet 20 (20a) and the first covering sheet 11 and the absorbent core 10c and the second covering sheet 12 each have an antibacterial agent.

Further, from the viewpoint of the transition property of the antibacterial agent from the continuous sheet 20a of the top sheet to the first covering sheet 11, the proportion of the adhesive-free portion PHMAN in the antimicrobial coating application region AR is set to be compared. The proportion of PHMA in the presence of the agent is more preferably in the region AR, as is the case in this case (Fig. 7).

Moreover, the magnitude relationship of the fiber density at the merging position Pj20a is such that the first covering sheet 11 is formed larger than the continuous sheet 20a of the top sheet, and the absorbent core 10c is larger than the first covering sheet 11. Therefore, the capillary phenomenon generated by the above-described size relationship can also effectively promote the above-described migration of the antibacterial agent, and as a result, it is possible to form a state in which the antibacterial agent is contained in a wide range in the thickness direction of the sanitary napkin 1.

On the other hand, the embossing processing device 60 is disposed on the downstream side in the conveyance direction of the merging position Pj20a. The embossing processing device 60 has a pair of upper and lower rollers 60u and 60d that rotate, and the outer peripheral surface of the lower roller 60d is provided with a shape corresponding to the above-described dot-shaped press portion EMD and linear press portion EML. Convex (not shown). Therefore, when the embossing processing apparatus 60 is used, the continuous sheet 20a of the top sheet and the absorbent body 10 are pressed together from the skin side in the thickness direction on the convex portion of the outer peripheral surface of the lower roll 60d, thereby forming the above-mentioned The press portion EMD and the press portion EML are integrated so that the continuous sheet 20a of the top sheet is more firmly joined to the absorber 10. Further, at this time, the portions other than the press portions EMD and EML are pressed on the outer circumferential surface of the upper roller 60u and the outer circumferential surface of the lower roller 60d, but the extrusion is performed (corresponding to "squeezing" ), it is also possible to promote the migration of the aforementioned antibacterial agent in the thickness direction.

On the downstream side of the embossing processing device 60 in the transport direction, a plurality of back sheets 30, 30, ... the joining position Pj30a of the continuous sheet 30a of the back sheet continuous in the longitudinal direction is set. Therefore, when When the continuous sheet 20a of the top sheet of the integrated absorbent body 10 passes through the joining position Pj30a, the continuous sheet 30a of the sheet on the back side of the sheet 20a merges. Further, at this time, the continuous sheet 30a of the back sheet is superposed on the non-skin side from the continuous sheet 20a of the top sheet, and is formed between the continuous sheet 20a of the top sheet and the continuous sheet 30a of the back sheet. The state of the absorbent body 10 is sent to the circular sealing device 65 downstream thereof in such a state.

The circular seal device 65 has a pair of upper and lower rollers 65u and 65d that rotate, and a convex portion (not shown) corresponding to the contour shape of the sanitary napkin 1 is provided on the outer peripheral surface of the lower roller 65d. Therefore, when the circular sealing device 65 is passed, both the continuous sheet 20a of the top sheet and the continuous sheet 30a of the back sheet are fused to each other at positions corresponding to the outer peripheral edge portions 20e and 30e which are contours of the sanitary napkin 1. Being joined. Then, the continuum 1a of the plurality of sanitary napkins 1, 1 ... which are continuously formed in the longitudinal direction is generated, and the continuous body 1a is sent to the die cutter device 70 downstream of the conveyance direction.

The die cutter device 70 has a pair of upper and lower rollers 70u and 70d that rotate, and one of the rollers 70d has a punching blade 72 that has a shape corresponding to the contour of the sanitary napkin 1. Therefore, when the continuum 1a of the sanitary napkin passes the position of the die cutter device 70, the sanitary napkin 1 is individually punched out from the continuous body 1a of the sanitary napkin by the punching blade 72, thereby producing a single-piece sanitary Cotton 1.

By the way, from the antibacterial agent applied to the continuous sheet 20a of the top sheet to the absorbent body 10 (that is, to the first covering sheet 11 and the absorbent From the viewpoint of the transition property of the core 10c and the second covering sheet 12), at least the above-mentioned merging position Pj20a of the top sheet continuous sheet 20a is in contact with the absorber 10, and the antibacterial agent of the sheet 20a is not dried. The example has become like this.

8A and 8B are explanatory views of the sanitary napkin 1 according to the first modification of the embodiment. Fig. 8A is a schematic plan view of the sanitary napkin 1 as seen from the skin side in the thickness direction, and Fig. 8B is a schematic exploded view of the arrow B-B in Fig. 8A.

In the above-described embodiment, as shown in FIGS. 1 and 3, the sanitary napkin 1 does not have the so-called side sheets 25 and 25 at the respective end portions in the wide direction. However, in the first modification, the side sheet 25 is provided. 25. Further, this point is mainly different from the above-described embodiment, and the points other than this are approximately the same. Therefore, the differences are mainly described below, and the same configurations as those of the above-described embodiments are denoted by the same reference numerals, and the description thereof will be omitted.

In the first modification, as shown in Figs. 8A and 8B, the size of the top sheet 20 in the width direction is smaller than that of the above embodiment. In other words, the top sheet 20 slightly protrudes outward in the width direction from the absorbent core 10c, but does not extend to the position of the outer contour of the sanitary napkin 1. In addition, each end portion 30ew, 30ew in the wide direction of the back sheet 30 which is the outline of the sanitary napkin 1 is in a state of being protruded outward in the width direction from the top sheet 20. On the other hand, in each of the end portions 20ew1, 20ew1 in the wide direction of the top sheet 20, the total length of the side sheets 25, 25 in the longitudinal direction is larger toward the width direction than the top sheet 20. The outer protrusions are set. Further, the end portions 30ew, 30ew in the wide direction of the side sheets 25, 25 and the back sheet 30 are joined by bonding, welding, or the like, whereby the ends of the side sheets 25 and the back sheet 30 are joined. The 30ew is the contour of the sanitary napkin 1 that is formed together.

Further, such a side sheet 25 is an example of a sheet formed of a non-woven fabric as a fiber, and as shown in FIG. 8B, covers the skin side of the end portion 20ew1 of the top sheet 20 and the side surface thereof. The skin is superimposed on the side. Further, the overlapped portion 25p is crimped to the end portion 20ew1 of the top sheet 20, whereby the side sheets 25 are joined to the top sheet 20 to be integrated. Further, in the overlapping portion 25p, a plurality of rectangular crimping portions E25, E25, ... (corresponding to "the portion to be crimped") are formed in the overlapping portion 25p (see Fig. 8A).

In the first modification, as in the above-described embodiment, the central portion 20cw1 in the wide direction of the top sheet 20 is provided with the existence region AR in which the antibacterial agent is present (see the dot pattern in FIG. 8A). However, the end portion 20ew1 of the top sheet 20 in the width direction is a non-existing region ARN in which the antibacterial agent does not exist. Therefore, it is possible to effectively suppress the skin that is damaged by the wearer. The details are as follows.

First, the above-mentioned crimped portions E25, E25, ... in the side sheet 25 are made high in fiber density (g/cm ³ ) in accordance with the pressure bonding. Therefore, after the above-described manufacturing line LM presses the continuous sheet (not shown) of the side sheet 25 against the continuous sheet 20a of the top sheet, the liquid side is applied to the non-skin side of the continuous sheet 20a of the top sheet. In the antibacterial agent, the liquid antibacterial agent applied to the continuous sheet 20a is easily aggregated by capillary action to the crimping portions E25, E25, ... in the continuous sheet of the side sheet 25. On the other hand, since the skin side surface of the side sheet 25 may hit the root portion of the leg in the crotch of the subject person, the side sheet 25 particularly sharpens the skin of the person to be attached. It is easy to hurt the skin. Further, if the side sheet 25 has an antibacterial agent, there is a concern that the pain is promoted.

In this regard, in the first modification, the end portion 20ew1 of the top sheet 20 at the position of the crimp portion E25 is a non-existing region ARN in which the antibacterial agent does not exist. Therefore, the migration of the antibacterial agent to the pressure-bonding portions E25, E25, ... of the side sheet 25 provided on the skin side of the end portion 20ew1 of the top sheet 20 is prevented, and as a result, the antibacterial agent can be effectively avoided. The cause of injury to the skin of the subject.

FIG. 9 is an explanatory view of the sanitary napkin 1 according to the second modification of the embodiment, that is, a schematic plan view of the sanitary napkin 1 as seen from the skin side in the thickness direction.

In the above-described embodiment, as shown in Fig. 5, the antibacterial agent application region (presence region) AR is formed so as to protrude outward in the width direction from the absorbent core 10c. However, the second modification is a specific absorption. The core 10c does not protrude outward in the width direction, that is, the antibacterial agent application region AR is formed inside the width direction of the core 10c.

Therefore, in the case of the second modification, the merging position Pj20a in the manufacturing line LM of Fig. 6 is such that the antibacterial agent application region AR of the non-skin side surface of the continuous sheet 20a of the top sheet is approximately the core. The state covered by 10c. In other words, the coating region AR is formed so as not to protrude outward in the width direction from the absorbent core 10c. Therefore, in the conveyance path on the downstream side of the merging position Pj20a, the core 10c can effectively prevent various devices on the non-skin side of the continuous sheet 20a of the top sheet by contacting the non-skin side surface of the sheet 20a with the roller 60u. For example, the upper roller 60u of the embossing processing device 60 may contact the non-skin side surface of the sheet 20a to cause a problem such as corrosion of the antibacterial agent.

Further, the second modification is mainly different from the above-described embodiment in the above points, and the points other than the above are approximately the same. Therefore, the same configurations as those of the above-described embodiments are denoted by the same reference numerals and will not be described.

Incidentally, from the viewpoint of preventing corrosion caused by the above-mentioned antibacterial agent, a so-called suction belt conveyor may be applied to the belt conveyor CVa located closest to the merging position Pj20a shown in Fig. 6 . In addition, by suction from a plurality of intake holes (not shown) of the endless belt CVB forming the conveyance path of the conveyance belt CVa, the top sheet can be suctioned and removed through the skin side surface of the sheet 20a. The residual antibacterial agent of the continuous sheet 20a. Therefore, in the subsequent conveyance path, various devices on the skin side of the continuous sheet 20a of the top sheet can be effectively prevented, for example, the lower side 60d of the embossing processing device 60 contacts the skin side of the sheet 20a, which may cause corrosion of the cause of the antimicrobial agent. Bad conditions such as.

===Other implementations ===

Although the embodiments of the present invention have been described above, the above may be The embodiments are intended to be illustrative of the present invention and are not intended to limit the scope of the invention. It is to be understood that the invention may be modified or modified without departing from the spirit and scope of the invention. For example, there may be variations of the type shown below.

In the above-described embodiment, the top sheet 20, the first covering sheet 11, the absorbent core 10c, and the second covering sheet 12 each contain an antibacterial agent as shown in Fig. 3, but are not limited thereto. For example, the absorbent core 10c and the second covering sheet 12 may not contain an antibacterial agent. However, the absorbent core 10c is a member that absorbs most of the excretion liquid for a long period of time to hold the liquid. Therefore, from the viewpoint of effectively achieving an antibacterial action against such an excretion liquid, it is desirable that the core 10c also contains an antibacterial agent.

In the above-described embodiment, as shown in FIG. 3, the first covering sheet 11 is exemplified as a liquid permeable sheet that abuts against the non-skin side surface of the top sheet 20. Further, such a sheet 11 is a core-clad sheet in which the skin side surface of the absorbent core 10c is covered, and is not limited thereto. For example, the liquid permeable sheet described above may also be disposed as a so-called second sheet between the top sheet 20 and the absorbent body 10. That is, the liquid permeable sheet may be disposed between the top sheet 20 and the core clad sheet (the first covering sheet 11).

In the above-described embodiment, the sanitary napkin 1 which is an example of the absorbent article has a pair of wing portions 1w and 1w, and is not limited thereto. That is, the wing portion 1w may not be provided.

In the above-described embodiment, the sanitary napkin 1 is exemplified as an absorbent article, and is not limited thereto. For example, absorption The sexual article may be a urine absorption pad, a sanitary pad, or the like that is fixed to the underwear of the shorts or the like to absorb excrement such as urine, and in other words, may be absorbed as a waist opening portion and a pair of leg openings. Disposable disposable diapers for sexual goods, so-called pet sheets.

In the above embodiment, a single layer sheet is exemplified as the top sheet 20, and a plurality of sheets may be used. In other words, a plurality of sheets formed by joining a sheet which is a skin side layer and a sheet which is a non-skin side layer may be used. Further, at this time, the sheet which becomes the non-skin side layer of the latter can also be interpreted as the aforementioned second sheet. That is, the sheet joined to the side layer of the skin and the sheet of the second sheet may be interpreted as the "top sheet" of the request. Further, the "liquid permeable sheet" of the request item at this time means, for example, the above-mentioned core-clad sheet.

Claims (16)

An absorbent article comprising: an absorbent article in a longitudinal direction, a wide direction, and a thickness direction orthogonal to each other, characterized by having a liquid-permeable top sheet which is in contact with the skin of the subject a liquid permeable sheet disposed in contact with the non-skin side surface of the top sheet in the thickness direction; and an absorbent core disposed in the non-skin direction in the thickness direction of the liquid permeable sheet The side absorbing liquid, the top sheet contains an antibacterial agent, and the liquid permeable sheet also contains an antibacterial agent, and a non-existent region where the antibacterial agent does not exist is formed in each end portion of the top sheet in the wide direction. The region where the antibacterial agent is present is in a range in which it protrudes in the longitudinal direction and the wide direction from the absorbent core. The absorbent article according to claim 1, wherein the amount of the antibacterial agent contained in the top sheet is larger than the amount of the antibacterial agent contained in the liquid permeable sheet. The absorbent article according to the first aspect of the invention, wherein the antibacterial agent contained in the top sheet and the antibacterial agent contained in the liquid permeable sheet are the same type of antibacterial agent. Such as the absorption of the first or second item of the patent application scope The above absorbent core also contains an antibacterial agent. The absorbent article according to the first aspect of the invention, wherein the end portion of the top sheet has a skin side overlapping from the thickness direction and protrudes outward from the end portion in the width direction. The side sheet is provided, and the top sheet and the side sheet are formed of fibers, and the side sheet has a portion that is crimped to the end portion of the top sheet. The absorbent article according to claim 1 or 2, wherein the liquid permeable sheet has a colored portion colored in a color different from a color of the material of the liquid permeable sheet, and the colored portion is set to be The top sheet is viewed from the side of the top sheet in the thickness direction. The absorbent article according to claim 1 or 2, further comprising: an absorbent core that abuts against the non-skin side surface of the liquid permeable sheet in the thickness direction to absorb the liquid; the second sheet Abutting against the non-skin side surface of the absorbent core in the thickness direction; and a press portion for separating the top sheet from the liquid permeable sheet and the absorbent core and the second sheet from the thickness Directional skin The side is formed by pressing, and an antibacterial agent is present in the press section. The absorbent article according to claim 7, wherein the liquid permeable sheet and the second sheet are each formed of fibers, and the fiber density (g/cm ³ ) of the liquid permeable sheet is compared in the press portion. When the fiber density (g/cm ³ ) of the second sheet is used, the fiber density of the second sheet is large. A method for producing an absorbent article, comprising: a liquid-permeable top sheet that is in contact with the skin of the wearer, and a top sheet that is perpendicular to each other in the longitudinal direction, the wide direction, and the thickness direction A method for producing an absorbent article in which the non-skin side surface of the top sheet in the thickness direction abuts against the liquid permeable sheet to be disposed, characterized in that the base sheet of the top sheet is coated with an antibacterial agent; The base sheet of the liquid permeable sheet abuts against the non-skin side surface of the base sheet coated with the top surface sheet of the antibacterial agent in the thickness direction; and a part of the antibacterial agent from the base sheet of the top sheet The sheet is transferred to the base sheet of the liquid permeable sheet, and the coating is performed by applying the antibacterial agent to the non-skin side surface of the base sheet of the top sheet, and between the coating and the abutting. Is applied to the aforementioned non-skin side coating adhesive, In the abutting, the base sheet of the liquid permeable sheet is fixed to the non-skin side surface of the base sheet of the top sheet by the adhesive, and the antibacterial agent is applied to the non-skin side surface. The adhesive present portion having the aforementioned adhesive agent is absent from the adhesive present in the absence of the aforementioned adhesive. The method for producing an absorbent article according to claim 9, wherein the ratio of the portion in which the adhesive is not present in the region where the antibacterial agent is applied is larger than the ratio of the portion in which the adhesive is present in the region . The method for producing an absorbent article according to claim 9 or claim 10, wherein the antibacterial agent is a liquid, and the antibacterial agent applied to the base sheet of the top sheet is dried before the drying of the antibacterial agent. Abut. The method for producing an absorbent article according to claim 11, wherein after the abutting, the base sheet of the top sheet and the base sheet of the liquid permeable sheet are pressed together in the thickness direction. . A method for producing an absorbent article, comprising: a liquid-permeable top sheet that is in contact with the skin of the wearer, and a top sheet that is perpendicular to each other in the longitudinal direction, the wide direction, and the thickness direction A method for producing an absorbent article in which the non-skin side surface of the top sheet in the thickness direction abuts against the liquid permeable sheet to be disposed, comprising: applying an antibacterial agent to a base sheet of the top sheet; The base sheet of the liquid permeable sheet abuts against the non-skin side surface of the base sheet coated with the top surface sheet of the antibacterial agent in the thickness direction; and a part of the antibacterial agent from the base sheet of the top sheet The sheet is transferred to the base sheet of the liquid permeable sheet, and the base sheet of the top sheet and the base sheet of the liquid permeable sheet are each formed of fibers, and the abutting is a substrate for the liquid permeable sheet. sheet of fiber density (g / cm ³⁾ density of the fiber sheet than the top surface of the base sheet (g / cm ³⁾ greater. A method for producing an absorbent article, comprising: a liquid-permeable top sheet that is in contact with the skin of the wearer, and a top sheet that is perpendicular to each other in the longitudinal direction, the wide direction, and the thickness direction A method for producing an absorbent article in which the non-skin side surface of the top sheet in the thickness direction abuts against the liquid permeable sheet to be disposed, characterized in that the base sheet of the top sheet is coated with an antibacterial agent; The base sheet of the liquid permeable sheet abuts against the non-skin side surface of the base sheet coated with the top surface sheet of the antibacterial agent in the thickness direction; and a part of the antibacterial agent from the base sheet of the top sheet The sheet is transferred to the base sheet of the liquid permeable sheet, and an absorbent core that absorbs liquid is provided on the non-skin side of the base sheet of the liquid permeable sheet in the thickness direction. In the coating, the antibacterial agent is applied to the base sheet of the top sheet in a direction in which the absorbent core protrudes in the width direction and the longitudinal direction, and the migration is performed by allowing a part of the antibacterial agent to pass through the The substrate sheet of the liquid permeable sheet migrates to the aforementioned absorbent core. A method for producing an absorbent article, comprising: a liquid-permeable top sheet that is in contact with the skin of the wearer, and a top sheet that is perpendicular to each other in the longitudinal direction, the wide direction, and the thickness direction A method for producing an absorbent article in which the non-skin side surface of the top sheet in the thickness direction abuts against the liquid permeable sheet to be disposed, characterized in that the base sheet of the top sheet is coated with an antibacterial agent; The base sheet of the liquid permeable sheet abuts against the non-skin side surface of the base sheet coated with the top surface sheet of the antibacterial agent in the thickness direction; and a part of the antibacterial agent from the base sheet of the top sheet The sheet is transferred to the base sheet of the liquid permeable sheet, and an absorbent core that absorbs the liquid is provided on the non-skin side of the base sheet of the liquid permeable sheet in the thickness direction, and the coating is performed as described above. The absorbent core further applies the antibacterial agent to the base sheet of the top sheet, and the migration is performed by allowing a part of the antibacterial agent to pass through. Said fluid migration into the absorbent core through the base sheet of the sheet. A method for producing an absorbent article, comprising: a long direction, a wide direction, and a thickness direction orthogonal to each other, and having: A liquid-permeable top sheet in contact with the skin of the subject, and a method for producing an absorbent article in which the liquid-permeable sheet is placed in contact with the non-skin side surface of the top sheet in the thickness direction, and is characterized in that: An antibacterial agent is applied to the base sheet of the top sheet; and the base sheet of the liquid permeable sheet is brought into contact with the non-thickness direction of the base sheet of the top sheet coated with the antibacterial agent. a side surface of the skin; and a base sheet that allows a part of the antibacterial agent to migrate from the base sheet of the top sheet to the liquid permeable sheet, wherein the abutting is a transfer path of the base sheet of the top sheet and the aforementioned In the merging position of the conveyance path of the base sheet of the liquid permeable sheet, the conveyance path of the base sheet of the top sheet is set at a position on the upstream side in the conveyance direction from the application position where the antibacterial agent is applied. The sheet roll feeds the feeding position of the substrate sheet of the top sheet, and the coating position in the substrate sheet conveying path of the top sheet is more than the feeding position Near the confluence of the preceding position.