JP2017006505A - Absorptive article and method for manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide antibacterial effect over a wide range in a thickness direction of an absorptive article.SOLUTION: An absorptive article has a longitudinal direction, a widthwise direction, and a thickness direction, which are perpendicular to each other. The absorptive article comprises a liquid-permeable top sheet coming into contact with a wearer's skin; and a liquid-permeable sheet disposed in contact with the non-skin contact side of the top sheet in the thickness direction. The top sheet contains an antibacterial agent. The liquid-permeable sheet also contains an antibacterial agent.SELECTED DRAWING: Figure 5

Description

  The present invention relates to an absorbent article such as a sanitary napkin and a method for producing the same.

  A sanitary napkin is known as an absorbent article that absorbs excreted fluid such as menstrual blood and urine. The napkin has a longitudinal direction, a width direction, and a thickness direction orthogonal to each other. The napkin has a liquid-permeable top sheet, a liquid-permeable intermediate sheet, an absorbent core, and a liquid-impermeable back sheet that are stacked in this order in the thickness direction. Patent Document 1 discloses that a cooling agent is inserted in a space between the top sheet and the intermediate sheet that contacts the non-skin side surface of the top sheet.

JP 2010-234031 A

  On the other hand, antibacterial performance may be required for napkins. In that case, a configuration in which an antibacterial agent is placed in the space instead of the refreshing agent is considered as a reference example.

However, in the napkin of the reference example, the above-described top sheet that comes into contact with the skin of the wearer does not contain an antibacterial agent. Therefore, an antibacterial action (such as a function of inhibiting bacterial growth) cannot be effectively exerted on the excretory liquid remaining on the top sheet.
Further, although there is a possibility that excretion fluid may remain on the intermediate sheet (for example, a so-called second sheet or a so-called core wrap sheet when there is no second sheet) that contacts the non-skin side surface of the top sheet. Does not contain antibacterial agents. Therefore, the antibacterial action cannot be effectively exerted on the excretory liquid remaining in the intermediate sheet.

  That is, the above-described napkin cannot effectively exert an antibacterial action over a wide range in the thickness direction, and as a result, it is difficult to enhance the antibacterial action of the napkin as a whole.

  This invention is made | formed in view of the said subject, The objective is to make an antibacterial effect reach over the wide range of the thickness direction of an absorbent article.

The main invention for achieving the above object is:
An absorbent article having a longitudinal direction, a width direction, and a thickness direction orthogonal to each other,
A liquid-permeable top sheet that contacts the skin of the person to be worn;
A liquid permeable sheet disposed in contact with the non-skin side surface in the thickness direction of the top sheet,
The top sheet contains an antibacterial agent,
The liquid permeable sheet also contains an antibacterial agent.
Also,
A liquid-permeable top sheet that has a longitudinal direction, a width direction, and a thickness direction that are orthogonal to each other, and that is in contact with the non-skin side surface of the top sheet in the thickness direction. A liquid permeable sheet, and a method for producing an absorbent article comprising:
Applying an antibacterial agent to the base sheet of the top sheet;
Bringing the base sheet of the liquid-permeable sheet into contact with the non-skin side surface in the thickness direction of the base sheet of the top sheet coated with the antibacterial agent;
A part of the antibacterial agent is transferred from the base sheet of the top sheet to the base sheet of the liquid permeable sheet.
Other features of the present invention will become apparent from the description of the present specification and the accompanying drawings.

  ADVANTAGE OF THE INVENTION According to this invention, an antimicrobial effect can be extended over the wide range of the thickness direction of an absorbent article.

It is the schematic plan view which looked at the sanitary napkin 1 as an example of the absorbent article of this embodiment from the skin side of the thickness direction. It is the schematic plan view which looked at the napkin 1 from the non-skin side of the thickness direction. It is a schematic exploded view shown by the III-III arrow in FIG. It is the schematic plan view which looked at the absorber 10 from the non-skin side of the thickness direction. It is the schematic plan view of the napkin 1 which showed the planar position of the presence area | region AR of an antibacterial agent with the dot pattern. It is a schematic side view of the production line LM of the napkin 1 of this embodiment. It is explanatory drawing of the adhesive presence part PHMA and the adhesive non-existence part PHMAN. It is the schematic plan view which looked at the napkin 1 of the 1st modification of this embodiment from the skin side of the thickness direction. It is a schematic exploded view shown by the BB arrow in FIG. 8A. It is the schematic plan view which looked at the napkin 1 of the 2nd modification of this embodiment from the skin side of the thickness direction.

At least the following matters will become apparent from the description of the present specification and the accompanying drawings.
An absorbent article having a longitudinal direction, a width direction, and a thickness direction orthogonal to each other,
A liquid-permeable top sheet that contacts the skin of the person to be worn;
A liquid permeable sheet disposed in contact with the non-skin side surface in the thickness direction of the top sheet,
The top sheet contains an antibacterial agent,
The liquid permeable sheet also contains an antibacterial agent.

  According to such an absorbent article, the antibacterial agent is also contained in the top sheet, and the antibacterial agent is also contained in the liquid-permeable sheet that contacts the non-skin side surface of the top sheet. Therefore, the antibacterial action can be effectively exerted on each of the excretory liquid remaining on the top sheet and the excretory liquid remaining on the liquid permeable sheet. As a result, the antibacterial action can be extended over a wide range in the thickness direction of the absorbent article.

Such an absorbent article,
The amount of the antibacterial agent contained in the top sheet is preferably larger than the amount of the antibacterial agent contained in the liquid permeable sheet.

  According to such an absorbent article, the antibacterial action in the top sheet can be increased, and thereby, a large antibacterial action can be exerted on the excretory fluid discharged to the absorbent article from an early stage.

Such an absorbent article,
The antibacterial agent contained in the top sheet and the antibacterial agent contained in the liquid-permeable sheet are preferably the same type of antibacterial agent.

  According to such an absorbent article, when the types of the antibacterial agents are different from each other, it is possible to prevent problems such as a decrease in the antibacterial action that may occur when these antibacterial agents come into contact with each other and react with each other. .

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,
It is desirable that the absorbent core also contains an antibacterial agent.

  According to such an absorbent article, the antibacterial agent is also contained in the absorbent core disposed on the non-skin side of the liquid permeable sheet. Therefore, the antibacterial action can be effectively exerted on the excretory liquid absorbed and retained by the absorbent core. As a result, the antibacterial effect can be extended over a wider range in the thickness direction of the absorbent article.

Such an absorbent article,
It is desirable that a non-existing region where the antibacterial agent does not exist is formed at each end in the width direction of the top sheet.

  According to such an absorptive article, it becomes possible to suppress hurting the skin of a wear subject's crotch. That is, each end portion in the width direction of the top sheet is a portion that can hit the base of the leg in the crotch of the wear target person, so that the skin is particularly damaged by rubbing the skin of the wear target person at the end portion. easy. And when an antibacterial agent exists in the said edge part, there exists a possibility of promoting this situation to hurt. Here, according to the above configuration, a non-existing region where no antibacterial agent is present is formed at this end. Therefore, the promotion of the above-mentioned painful situation can be suppressed.

Such an absorbent article,
A side sheet provided on the end portion of the top sheet so as to protrude outward in the width direction from the end portion while being overlapped from the skin side in the thickness direction;
Both the top sheet and the side sheet are preferably formed of fibers, and the side sheet preferably has a portion crimped to the end of the top sheet.

  According to such an absorbent article, the above-mentioned crimped portion of the side sheet has a high fiber density based on the crimping. Therefore, in the manufacturing process, the liquid antibacterial agent is likely to gather at the crimped portion by capillary action, but there is no antibacterial agent at the end of the top sheet where the crimped portion is located. A non-existing region is formed. Therefore, it is possible to quickly avoid the situation where the antibacterial agent gathers in the above-mentioned crimped portion of the side sheet provided on the skin side of the top sheet, and as a result, the wearable person due to the antibacterial agent. The situation of damaging the skin can be effectively avoided.

Such an absorbent article,
The liquid permeable sheet has a colored portion colored differently from the material color of the liquid permeable sheet,
The colored portion is preferably provided so as to be visible from the top sheet side in the thickness direction through the top sheet.

  According to such an absorbent article, the colored portion in the liquid permeable sheet is visible from the top sheet side in a form that allows the top sheet to pass through. Therefore, it can be made to image that the said absorbent article is antibacterial specification to the person who looked at the said colored part.

Such an absorbent article,
An absorptive core that is in contact with the non-skin side surface in the thickness direction of the liquid permeable sheet and absorbs the liquid;
A second sheet that contacts the non-skin side surface of the absorbent core in the thickness direction;
The top sheet, the liquid-permeable sheet, the absorbent core, and the second sheet are squeezed together from the skin side in the thickness direction, and
It is desirable that an antibacterial agent is present in the pressing portion.

  According to such an absorbent article, said pressing part is formed by pressing from the skin side in the thickness direction. Therefore, the excretion fluid tends to accumulate in the compressed portion. However, in this regard, an antibacterial agent is present in the compressed portion. Therefore, an antibacterial action can be effectively exerted also on the excretion liquid accumulated in the same pressing part.

Such an absorbent article,
The liquid permeable sheet and the second sheet are each formed of fibers,
When compared with the fiber density of the liquid permeable sheet (g / cm ³⁾ and the fiber density of the second sheet (g / cm ³⁾ in the pressing section, the larger fiber density of the second sheet Is desirable.

  According to such an absorbent article, the fiber density of the second sheet is higher in the above-described compressed portion. Therefore, in the manufacturing process, the antibacterial agent of the liquid permeable sheet is likely to move toward the second sheet by capillary action, and as a result, the antibacterial agent is present over a wide range in the thickness direction in the compressed portion. Can be. Therefore, an antibacterial action can be more effectively exerted on the excretory liquid accumulated in the compressed portion.

Also,
A liquid-permeable top sheet that has a longitudinal direction, a width direction, and a thickness direction that are orthogonal to each other, and that is in contact with the non-skin side surface of the top sheet in the thickness direction. A liquid permeable sheet, and a method for producing an absorbent article comprising:
Applying an antibacterial agent to the base sheet of the top sheet;
Bringing the base sheet of the liquid-permeable sheet into contact with the non-skin side surface in the thickness direction of the base sheet of the top sheet coated with the antibacterial agent;
A part of the antibacterial agent is transferred from the base sheet of the top sheet to the base sheet of the liquid permeable sheet.

  According to such a method for manufacturing an absorbent article, it is possible to manufacture an absorbent article having specifications including an antibacterial agent in each of the top sheet and the liquid-permeable sheet that contacts the non-skin side surface of the sheet. Therefore, the same operation effect as the operation effect of an absorptive article mentioned above can be produced.

A method of manufacturing such an absorbent article,
In the application, it is desirable to apply the antibacterial agent to the non-skin side surface of the base sheet of the top sheet.

  According to such a method for manufacturing an absorbent article, since the antibacterial agent is applied to the non-skin side surface of the base sheet of the top sheet, the antibacterial agent is applied to the liquid-permeable sheet that contacts the non-skin side surface. A part can be transferred quickly.

A method of manufacturing such an absorbent article,
Between applying and applying the adhesive, an adhesive is applied to the non-skin side surface,
In the contacting, the base sheet of the liquid permeable sheet is fixed with the adhesive to the non-skin side surface of the base sheet of the top sheet,
It is desirable that the region where the antibacterial agent is applied on the non-skin side surface has an adhesive existing portion where the adhesive is present and an adhesive non-existing portion where the adhesive is not present.

  According to such a method for manufacturing an absorbent article, in the above-described adhesive-existing portion, the antibacterial agent is inhibited from transferring to the base sheet of the liquid-permeable sheet, while in the above-described adhesive-free portion. Can perform the transition promptly without substantially inhibiting the transition of the liquid-permeable sheet of the antibacterial agent to the base sheet. Therefore, an antibacterial agent can be included in both the base sheet of the top sheet and the base sheet of the liquid permeable sheet.

A method of manufacturing such an absorbent article,
It is desirable that the proportion of the adhesive non-existing portion in the region where the antibacterial agent is applied is larger than the proportion of the adhesive existing portion in the region.

  According to such a method for manufacturing an absorbent article, since the proportion of the adhesive non-existing portion is larger, the transfer of the antibacterial agent to the base sheet of the liquid permeable sheet can be performed more reliably. As a result, it is possible to more reliably manufacture an absorbent article having specifications including an antibacterial agent in the top sheet and the liquid permeable sheet.

A method of manufacturing such an absorbent article,
The antimicrobial agent is a liquid;
It is desirable that the contact is made before the antibacterial agent applied to the base sheet of the top sheet is dried.

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

A method of manufacturing such an absorbent article,
After the contact, it is desirable to press the base sheet of the top sheet and the base sheet of the liquid permeable sheet together in the thickness direction.

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

A method of manufacturing such an absorbent article,
The base sheet of the top sheet and the base sheet of the liquid permeable sheet are each formed of fibers,
In the contacting, the fiber density (g / cm ³ ) of the base sheet of the liquid-permeable sheet is larger than the fiber density (g / cm ³ ) of the base sheet of the top sheet. desirable.

  According to such a method for manufacturing an absorbent article, in the contacting, 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. ing. Therefore, the transition of the antibacterial agent applied to the base sheet of the top sheet to the base sheet of the liquid-permeable sheet can be quickly performed based on the capillary phenomenon. This makes it possible to more reliably manufacture an absorbent article having specifications that include an antibacterial agent in the top sheet and the liquid-permeable sheet.

A method of manufacturing such an absorbent article,
On the non-skin side in the thickness direction than the base sheet of the liquid permeable sheet, an absorbent core that absorbs liquid is provided,
In applying, the antibacterial agent is applied to the base sheet of the top sheet so as to protrude in the width direction and the longitudinal direction from the absorbent core,
In the transfer, it is desirable to transfer a part of the antibacterial agent to the absorbent core via the base sheet of the liquid permeable sheet.

  According to such a method for manufacturing an absorbent article, the antibacterial agent is applied to the base sheet of the top sheet so as to protrude in the width direction and the longitudinal direction from the absorbent core. Therefore, when a part of the antibacterial agent is transferred to the absorbent core, the antibacterial agent is present over almost the entire region in the width direction and the longitudinal direction of the absorbent core. Therefore, even if the excretory fluid is absorbed in any position of the absorbent core, the antibacterial effect can be exerted on the absorbed excretory fluid.

A method of manufacturing such an absorbent article,
On the non-skin side in the thickness direction than the base sheet of the liquid permeable sheet, an absorbent core that absorbs liquid is provided,
In applying, the antibacterial agent is applied to the base sheet of the top sheet so as not to protrude in the width direction than the absorbent core,
In the transfer, it is desirable to transfer a part of the antibacterial agent to the absorbent core via the base sheet of the liquid permeable sheet.

  According to such a method for manufacturing an absorbent article, the coated region is formed with the same core so that the region coated with the antibacterial agent on the base sheet of the top sheet does not protrude in the width direction as compared with the absorbent core. Can be covered from the non-skin side. Therefore, the non-skin side of the top sheet base sheet is not affected by the antibacterial agent-induced corrosion that may occur when the non-skin side surface of the sheet comes into contact with the antibacterial agent. The core can be effectively avoided by contacting the device instead of the skin side.

A method of manufacturing such an absorbent article,
The abutting is performed at a joining position where the transport path of the base sheet of the top sheet joins the transport path of the base sheet of the liquid permeable sheet,
A feeding position for feeding the base sheet of the top sheet from a sheet roll is set at a position upstream of the application position for applying the antibacterial agent in the conveyance path of the base sheet of the top sheet. ,
It is desirable that the application position in the conveyance path of the base sheet of the top sheet is closer to the joining position than the feeding position.

  According to such a method for manufacturing an absorbent article, the transport length of the base sheet of the top sheet after application of the antibacterial agent can be shortened. Therefore, it can prevent effectively that the various apparatuses of a manufacturing line are soiled by the contact with the antibacterial agent apply | coated to the base material sheet of a top sheet.

=== This Embodiment ===
1 to 4 are explanatory views of a sanitary napkin 1 as an example of the absorbent article of the present embodiment. FIG. 1 is a schematic plan view of the napkin 1 viewed from the skin side in the thickness direction, and FIG. 2 is a schematic plan view of the napkin 1 viewed from the non-skin side in the thickness direction. FIG. 3 is a schematic exploded view taken along arrows III-III in FIG. FIG. 4 is a schematic plan view of the absorbent body 10 as seen from the non-skin side in the thickness direction.

  As shown in FIGS. 1 and 3, the napkin 1 is a sheet-like member that has a longitudinal direction, a width direction, and a thickness direction and has a vertically long shape in plan view. Moreover, in the napkin 1, the liquid-permeable top sheet 20, the liquid-absorbent absorber 10, and the liquid-impermeable back sheet 30 are sequentially formed from the skin side in the thickness direction to the non-skin side. And are stacked. Each of these members 20, 10, and 30 is joined to a member adjacent in the thickness direction with an adhesive HMA such as a hot melt adhesive. Examples of the application pattern of the adhesive HMA include an Ω pattern, a spiral pattern, a stripe pattern, and the like, and the same applies to other adhesives HMA that appear later.

  As shown in FIG. 1, the planar size of the top sheet 20 and the back sheet 30 is larger than the planar size of the absorbent body 10. Therefore, the outer peripheral edge portions 20e and 30e (see the dot pattern portion in FIG. 1) of both the sheets 20 and 30 protrude from the absorber 10 outward in the longitudinal direction and outward in the width direction, respectively. And the absorber 10 is hold | maintained between these both sheets 20 and 30 by joining the said outer peripheral edge parts 20e and 30e by crimping | compression-bonding or adhesion | attachment, such as welding.

  In this example, the planar shapes of both sheets 20 and 30 are the same. The sheets 20 and 30 have a shape in which a substantially central portion in the longitudinal direction protrudes on both sides in the width direction, and the protruding portions 20w and 30w mount the napkin 1 on an undergarment (not shown). It functions as so-called wing portions 1w and 1w provided when the device is fixed. That is, as shown in FIG.2 and FIG.3, on the non-skin side surface of the portion 30w corresponding to each wing portion 1w in the backsheet 30, an adhesive portion 40w for fixing the napkin 1 to the underwear is an appropriate adhesive. It is formed in a substantially rectangular shape. In addition, a plurality of adhesive portions 40c having the same purpose are also formed in a strip shape along the longitudinal direction with an appropriate adhesive in a portion 30c between the wing portions 1w and 1w on 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, an appropriate non-woven fabric such as an air-through non-woven fabric can be mentioned. In this example, an air-through non-woven fabric is used. However, it is not limited to this. That is, any other sheet may be used as long as it is a liquid-permeable flexible sheet. Moreover, as an example of the raw material of the back sheet 30, an appropriate resin film such as polyethylene (PE) can be cited. In this example, a PE film is used. However, it is not limited to this. That is, other sheets may be used as long as they are flexible liquid-impermeable sheets.

  Further, as shown in FIG. 1, a plurality of pressing parts EM, EM... Are formed on the skin side surface of the top sheet 20 from the skin side, whereby the top sheet 20 and the absorbent body 10 are thick together. It is squeezed in the vertical direction to increase the degree of joining. And in this example, two types of pressing parts EML and EMD are formed as this pressing part EM. One pressing part EM is a linear pressing part EML. And the said linear pressing part EML, EML ... is formed in multiple numbers along the outer periphery part of the absorber 10, and has comprised the substantially cyclic | annular form long in the longitudinal direction as a whole by this. On the other hand, the other pressing part EM is a dot-like pressing part EMD. And the said dotted | punctate pressing parts EMD, EMD ... are discretely formed in the substantially closed area | region AEML which the above-mentioned several linear pressing parts EML, EML ... partition on the top sheet 20. FIG. In this example, the planar shape of each squeezed compressed part EMD is a circle having a diameter of 1 mm, and the arrangement pattern of the compressed parts EMD, EMD... Is a staggered arrangement pattern. Not limited to. Furthermore, these point-like pressing parts EMD and linear pressing parts EML may be omitted.

  As shown in FIGS. 3 and 4, the absorbent body 10 has an absorbent core 10 c formed of a liquid absorbent fiber or the like in a longitudinally long shape in a longitudinal direction as an example of a predetermined shape, and a skin side surface of the core 10 c. A first covering sheet (corresponding to a liquid permeable sheet) 11 having substantially the same shape as the core 10c to contact and cover the same, and a non-skin side surface of the core 10c to contact and cover the same. It has a core 10c and a second covering sheet (corresponding to a second sheet) 12 having substantially the same planar shape. And as shown in FIG. 3, each sheet | seat 11 and 12 is each joined and integrated by the adhesive HMA, such as a hot-melt-adhesive, to the absorptive core 10c, respectively, Thereby, each sheet | seat 11 and 12 is Unnecessary deformation such as so-called kinking or collapse of the absorbent core 10c is prevented.

The absorptive core 10c has a cellulosic water-absorbing fiber as a liquid absorptive fiber in the range of basis weight 100 (g / m < ² >)-400 (g / m < ² >), for example. In this example, pulp fibers are used as an example of the water-absorbing fibers, but the present invention is not limited thereto. For example, rayon fibers may be used, or other liquid absorbent fibers may be used.
Further, in this example, the core 10c is made of, for example, a superabsorbent polymer (so-called SAP) as an example of a liquid absorbent granular material in addition to the liquid absorbent fiber, for example, a basis weight of 5 (g / m ² ) to 50 (g / m ² ), but this SAP can also be omitted.
Furthermore, in this example, an air-through nonwoven fabric having a basis weight in the range of 10 (g / m ² ) to 70 (g / m ² ), for example, is used as the first covering sheet 11. If so, it is not limited to this. That is, other types of non-woven fabrics may be used, or tissue paper or the like may be used. Further, as the second covering sheet 12, for example, an SMS (spunbond / meltblown / spunbond) non-woven fabric is used, but any other flexible non-woven fabric is used as long as it is a flexible sheet. Alternatively, tissue paper or the like may be used. More specifically, the second covering sheet 12 can be omitted.

  As shown in FIG. 4, the absorbent body 10 is formed with a squeezed squeezed portion ED10 from the non-skin side. That is, in this example, since the absorber 10 has the 1st coating sheet 11, the absorptive core 10c, and the 2nd coating sheet 12, when these three are squeezed together in the thickness direction, The pressing part ED10 is formed. As a result, the rigidity is enhanced, and as a result, unnecessary deformation such as twisting can be suppressed. In this example, the planar shape of the pressing part ED10 is a circle having a diameter of 1.2 mm, and the arrangement pattern of the pressing parts ED10, ED10... Is a staggered pattern, but is not limited to this. Moreover, although the maximum value of the thickness of the absorber 10 in which the pressing part ED10 and pressing part EML, EMD were formed is stored, for example in the range of 0.5 mm-5 mm, it is not restricted to this at all.

  By the way, in this embodiment, the above-mentioned 1st coating sheet 11 as an example of the liquid-permeable sheet which contact | abuts the non-skin side surface of the top sheet 20 of FIG. 3, the absorptive core 10c, and the core The above-mentioned second covering sheet 12 as an example of the second sheet that contacts the non-skin side surface of 10c includes an antibacterial agent.

Therefore, each of the excretion liquid remaining on the top sheet 20, the excretion liquid remaining on the first cover sheet 11, the excretion liquid absorbed and held by the absorbent core 10c, and the excretion liquid remaining on the second cover sheet 12 Antibacterial action can be effectively exerted against. As a result, the antibacterial effect can be exerted over a wide range in the thickness direction of the napkin 1.
In this example, the same kind of antibacterial agent is used for each member of each of the sheets 20, 11, 12 and the absorbent core 10c. Therefore, problems that may occur when the types of antibacterial agents are different for each of the members 20, 11, 12, 10c, for example, antibacterial agents of different types come into contact with each other and react to reduce the antibacterial action. Can be prevented in advance. However, it is not limited to this. That is, if a plurality of antibacterial agents are selected and used so that the antibacterial action does not decrease without reacting even if they are in contact with each other, the type of antibacterial agent is made different for each member 20, 11, 12, 10c. May be.

  As such an antibacterial agent, for example, an antibacterial solution produced by diluting a benzalkonium chloride solution with an appropriate solvent such as water can be used. Specifically, the above antibacterial solution is produced by blending an aqueous solution obtained by diluting a benzalkonium chloride solution to 5%, ethanol, and water at a ratio of 0.25%, 10%, and 89.75%, respectively. In this example, this antibacterial liquid is used. At the time when the napkin 1 is supplied to the market, the solvent such as water has already evaporated, so that each of the sheets 20, 11, 12 and the absorbent core 10c has benzalkonium chloride. Remains as the main antibacterial component. Incidentally, the above-mentioned blending ratio and blending components are examples, and the present invention is not limited thereto. That is, you may produce | generate an antibacterial liquid with a compounding ratio and compounding component other than this. Furthermore, in addition to the above antibacterial solution, cetylpyridinium chloride, benzethonium chloride, polyaminopropyl biguanide, paraben, and the like may be used as an antibacterial agent.

  Here, regarding the magnitude relationship of the amount of the antibacterial agent contained in each of the sheets 20, 11, 12 and the absorbent core 10c (amount (g) remaining after solvent evaporation), in this example, the top sheet 20 is the most, Next, the first covering sheet 11 is the largest, the absorbent core 10c is the next largest, and the second covering sheet 12 is the smallest.

  And if the amount (g) of the antibacterial agent contained in the top sheet 20 is maximized in this way, the antibacterial action in the top sheet 20 can be increased. And thereby, a big antibacterial action can be exerted from the early stage with respect to the excretion liquid discharged | emitted by the napkin 1, As a result, the napkin 1 can show high antibacterial property as a whole.

  However, it is not limited to this. For example, the absorbent core 10c may contain the most antibacterial agent. And if it does in this way, in the absorptive core 10c from which most excretion liquids stay for the longest time finally, a high antimicrobial effect can be exerted on excretion liquids. Therefore, also in this case, the napkin 1 can exhibit high antibacterial properties as a whole.

  By the way, when the antibacterial liquid derived from benzalkonium chloride liquid is used as an antibacterial agent, whether or not each of the sheets 20, 11, 12 and the absorbent core 10c contains the antibacterial agent is determined as follows. Can be done. First, after decomposing the napkin 1 into units of the sheets 20, 11, 12 and the absorbent core 10c, the bromophenol blue base is used as a test reagent for the sheets 20, 11, 12 and the absorbent core 10c. Solution (a mixture of 50 mL of 0.1 mol / L sodium hydroxide reagent and 20 mL of 0.05% bromophenol blue aqueous solution) is sprayed onto each member 20, 11, 12, 10c to be inspected. When the color of the reagent changes from purple to blue, it can be determined that the antibacterial agent is contained in the members 20, 11, 12, and 10c. In place of the above reagent, bromophenol blue acidic solution (0.2 mol / L sodium acetate 7.5 mL, 0.2 mol / L acetic acid 92.5 mL, 0.1% bromophenol blue ethyl alcohol) In this case, when the reagent color changes from yellow to blue, it can be determined that the antibacterial agent is contained. In some cases, the magnitude relationship of the amount of the antibacterial agent may be determined based on the color intensity after the change.

  In FIG. 5, the antibacterial agent existing area AR at the plane position defined by the width direction and the longitudinal direction is shown by a dot pattern. In this example, basically, the existence area AR is substantially the same across the sheets 20, 11, 12 and the absorbent core 10c. Therefore, here, the presence region AR of the antibacterial agent in the top sheet 20 will be described on behalf of these.

In this example, the antibacterial agent existence area AR is set over the entire length of the top sheet 20 in the longitudinal direction. However, the width direction does not extend over the entire length, that is, it is set at the central portion 20cw in the width direction, but is not set at each end portion 20ew, 20ew in the width direction. And this has suppressed effectively damaging the skin of a wear subject's crotch. Details are as follows.
First, since each end portion 20ew in the width direction of the top sheet 20 is a portion that can hit the base of the leg in the crotch of the wear target person, the end portion 20ew particularly rubs the skin of the wear target person. Easy to hurt skin. Therefore, if an antibacterial agent is present at the end 20ew, there is a risk of promoting this pain. In this respect, in this example, the end 20ew is not present in the non-existing region ARN where the antibacterial agent is not present. It is said that. Therefore, the promotion of the above-mentioned pain can be suppressed.
However, it is not limited to this. That is, the antibacterial agent existence area AR may be set over the entire length of the top sheet 20 in the width direction.

  In the example of FIG. 5, the existence area AR is set to a range that protrudes in the width direction and the longitudinal direction from the absorbent core 10 c. Therefore, when the excretory liquid is finally absorbed by the absorbent core 10c, it can have an antibacterial effect on the excreted liquid regardless of whether it is absorbed in the position in the width direction or the longitudinal direction. Thereby, the napkin 1 can exhibit high antibacterial properties as a whole.

  Further, in this example, the antibacterial agent is present in a substantially uniform distribution in the existence area AR, but the present invention is not limited to this. That is, more antibacterial agents may be present in the center ARc in the width direction in the presence region AR than in the ends ARe and ARe in the width direction. And if it does in this way, an antibacterial effect can be exerted more effectively with respect to the excretion liquid with many discharge | emission amounts in the center part ARc of the width direction.

  On the other hand, in this example, such an antibacterial agent is not evenly present in the thickness direction of the top sheet 20. That is, in the thickness direction of the top sheet 20 shown in FIG. 3, more antibacterial agents are present in the non-skin side than in the skin side. And this can also contribute to prevention of hurting a wearer's skin effectively. However, it is not limited to this. That is, when an antibacterial agent of a kind that 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 antibacterial The amount of the agent may be greater in the skin side portion than in the non-skin side portion in the thickness direction of the top sheet 20.

  In this example, as described above with reference to FIG. 1, the top sheet 20 and the absorbent body 10 (11, 10c, 12) are squeezed together from the skin side in the thickness direction. Although the point-shaped pressing part EMD and the linear pressing part EML are formed, an antibacterial agent exists also in these pressing parts EMD and EML. Therefore, when the excretory fluid is discharged to the skin side surface of the top sheet 20, the antibacterial action can be quickly and effectively exerted on the excretory fluid that easily accumulates in the compressed parts EMD and EML due to the dent shape. . This also contributes effectively to the fact that the napkin 1 exhibits high antibacterial properties as a whole.

Here, desirably, the fiber distribution density (g / cm ³ ) (hereinafter referred to as fiber density (g / cm ³ )) of the first covering sheet 11 in the compressed parts EMD and EML and the second covering sheet 12 are used. When the fiber density (g / cm ³ ) is compared, the fiber density of the second cover sheet 11 is preferably larger. And if it becomes like this, in the manufacturing line LM of the napkin 1 mentioned later, a liquid antibacterial agent will move easily to the 2nd coating sheet 12 by a capillary phenomenon, As a result, in the pressing parts EMD and EML An antibacterial agent can be present over a wide range in the thickness direction. And thereby, an antibacterial action can be more effectively exerted on the excretory fluid accumulated in the compressed parts EMD and EML.
Incidentally, for each value of the fiber density (g / cm ³ ) of the sheets 20, 11, 12 and the absorbent core 10c in the compressed parts EMD, EML, for example, each member 20, 11, 12, 10c to be calculated The basis weight (g / m ² ) at the compressed parts EMD, EML can be obtained as a divided value obtained by dividing the basis weight (g / m ² ) by the thickness of each member 20, 11, 12, 10c at the compressed parts EMD, EML, respectively.

  Desirably, the first cover sheet 11 has a colored portion (not shown) colored differently from the material color. In this example, since the 1st coating sheet 11 is a nonwoven fabric and the raw material color is a white color, it has a green coloring part as a color difference of a white color. In this example, the colored portion is formed over the entire skin side surface of the first covering sheet 11 for the purpose of improving the visibility of the colored portion. And it can be made to image that the said napkin 1 is antibacterial specification to the person who looked at this green coloring part by this. However, the color of the colored portion is not limited to green. That is, as long as it is a color that makes an image of antibacterial specifications for those who have seen the colored portion, it may be colored in other colors, for example, other green colors such as yellowish green and dark green may be used. However, a blue color may be used. Moreover, the formation target region of the colored portion is not limited to the entire skin side surface of the first covering sheet 11 as described above. For example, a part of the skin side surface may be a formation target of a colored portion.

FIG. 6 is a schematic side view of the production line LM for the napkin 1 of the present embodiment.
In this production line LM, first, a plurality of absorbers 10, 10... Generated in the lower process are transported along a transport path such as a belt conveyor CV in the transport direction with a predetermined pitch P1. That is, since it is already in the form of the absorbent body 10 at this time, the first covering sheet 11 has been bonded to the skin side surface of the absorbent core 10c with a hot melt adhesive HMA or the like, and non-skin On the side surface, the second covering sheet 12 has been joined with a hot melt adhesive HMA or the like.

  Then, at a predetermined merging position Pj20a in the conveyance path, a continuous sheet 20a (corresponding to “top sheet base material sheet”) in which a plurality of top sheets 20, 20. Thus, the continuous sheet 20a is overlaid and fixed on the first covering sheet 11 of the absorbent body 10 (corresponding to “base sheet of liquid permeable sheet”). Thereafter, it is integrally transported along the transport direction.

  The continuous sheet 20a of the top sheet is carried into the production line LM, for example, in the form of a sheet roll 20ar wound in the continuous direction. In the same line LM, the sheet roll 20ar is fed to the feeding device 50. Supported as possible. Then, the continuous sheet 20a of the top sheet fed from the feeding position P20ar of the sheet roll 20ar is conveyed through an appropriate conveyance path with the continuous direction as the conveying direction toward the above-described merging position Pj20a. When passing through the application position P53 of the antibacterial agent set in the conveyance path, the antibacterial agent is applied to the continuous sheet 20a. That is, an antibacterial agent application device 53 is disposed in the vicinity of the application position P53, and when passing through the position P53, the antibacterial agent described above is used as an antibacterial agent from the device 53 toward the non-skin side of the sheet 20a. Antibacterial liquid is sprayed.

  Further, the antibacterial agent at the time of application is liquid as described above. Therefore, the applied antibacterial agent diffuses in the thickness direction of the sheet 20a by, for example, passing through the fibers of the continuous sheet 20a, whereby not only the non-skin side surface of the sheet 20a but also the center position in the thickness direction. Or it will be in the state in which the antibacterial agent existed to the position of the skin side rather than it.

  Further, as can be seen with reference to 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-mentioned merging position Pj20a than the feeding position P20ar of the sheet roll 20ar. Yes. Therefore, the conveyance length to the joining position Pj20a of the continuous sheet 20a after application of the antibacterial agent can be shortened, and as a result, it is manufactured due to contact with the antibacterial agent applied to the continuous sheet 20a of the top sheet. It is possible to effectively prevent various devices (not shown) in the line LM from being contaminated.

  On the other hand, the continuous sheet 20a to which the antibacterial agent is applied passes through the application position P55 of the hot melt adhesive HMA set downstream of the application position P53 in the transport direction. Then, during the passage, the hot melt adhesive HMA is applied to the non-skin side surface of the sheet 20a from the adhesive application device 55 disposed in the vicinity of the same position P55. At this time, the adhesive HMA is applied in a predetermined pattern such as a stripe pattern. Therefore, as shown in FIG. 7, in the antibacterial agent application area AR (same as the above-described existence area AR), which is the area where the antibacterial agent is applied on the non-skin side surface, A non-existing adhesive non-existing portion PHMAN is formed. This relates to the transferability of the antibacterial agent of the continuous sheet 20a of the top sheet to the first cover sheet 11, which will be described later.

And the continuous sheet 20a of the top sheet | seat in which the antibacterial agent and adhesive HMA were applied in this way joins the conveyance path of the absorber 10 in the joining position Pj20a as described above, and thereby the same continuous sheet 20 a is fixed to the first covering sheet 11 of the absorbent body 10.
At this time, as shown in FIG. 6, the non-skin side surface of the continuous sheet 20a of the top sheet is brought into contact with the skin side surface of the first covering sheet 11 of the absorbent body 10, but the non-skin side surface of the continuous sheet 20a. In FIG. 7, an antibacterial agent application area AR is formed, and as shown in FIG. 7, the application area AR has an adhesive existing portion PHMA and an adhesive non-existing portion PHMAN. Therefore, in the adhesive-existing portion PHMA, the migration of the antibacterial agent to the first coating sheet 11 is suppressed, while in the adhesive-free portion PHMAN, the migration of the antibacterial agent to the first coating sheet 11 is generally inhibited. Instead, the transition is made promptly. Therefore, the antibacterial agent can be reliably contained in both the continuous sheet 20a of the top sheet and the first covering sheet 11.

  A part of the antibacterial agent transferred to the first cover sheet 11 moves to the absorbent core 10c, and a part of the antibacterial agent transferred to the core 10c further passes from the core 10c to the second cover sheet 12. As a result, the top sheet 20 (20a), the first cover sheet 11, the absorbent core 10c, and the second cover sheet 12 may each contain an antibacterial agent as described above. it can.

  Here, from the viewpoint of the transferability of the antibacterial agent from the continuous sheet 20a of the top sheet to the first cover sheet 11, the proportion of the adhesive-free portion PHMAN in the antibacterial agent application area AR is set to the same area. The ratio should be larger than the ratio of the adhesive-existing portion PHMA in AR, and in this example, this is done (FIG. 7).

  Moreover, the magnitude relationship of the fiber density at the joining position Pj20a is larger in the first covering sheet 11 than in the continuous sheet 20a of the top sheet, and larger in the absorbent core 10c than in the first covering sheet 11. Yes. Therefore, the capillary phenomenon generated based on this magnitude relationship can also effectively promote the above migration of the antibacterial agent, and as a result, the antibacterial agent is surely included over a wide range in the thickness direction of the napkin 1. Can be in a state.

  On the other hand, an embossing device 60 is disposed on the downstream side in the transport direction of the joining position Pj20a. The embossing device 60 has a pair of rotating upper and lower rolls 60u, 60d, and the outer peripheral surface of the lower roll 60d has a shape corresponding to the above-described dot-like pressing part EMD and linear pressing part EML. Protrusions (not shown) are provided. Therefore, when passing through the embossing device 60, the continuous sheet 20a of the top sheet and the absorbent body 10 are squeezed together from the skin side in the thickness direction at the convex portion of the outer peripheral surface of the lower roll 60d, thereby The above-mentioned pressing part EMD and pressing part EML are formed, and the continuous sheet 20a of the top sheet and the absorbent body 10 are joined and integrated more firmly. At this time, the parts other than the pressing parts EMD and EML are also pressed by the outer peripheral surface of the upper roll 60u and the outer peripheral surface of the lower roll 60d, but also by this pressing (corresponding to “pressing”), The migration of the antibacterial agent in the thickness direction is promoted.

  A merging position Pj30a of a backsheet continuous sheet 30a in which a plurality of backsheets 30, 30... Are continuous in the longitudinal direction is set downstream of the embossing device 60 in the conveying direction. Therefore, when the continuous sheet 20a of the top sheet in which the absorber 10 is integrated passes through the joining position Pj30a, the continuous sheet 30a of the back sheet joins the same sheet 20a. At this time, the continuous sheet 30a of the back sheet is superimposed on the continuous sheet 20a of the top sheet from the non-skin side, whereby the absorbent body 10 is interposed between the continuous sheet 20a of the top sheet and the continuous sheet 30a of the back sheet. Is inserted and sent to the downstream round seal device 65 in this state.

  The round seal device 65 has a pair of rotating upper and lower rolls 65u and 65d, and a convex portion (not shown) having a shape corresponding to the contour shape of the napkin 1 is provided on the outer peripheral surface of the lower roll 65d. Yes. Therefore, when passing through the round seal device 65, both the continuous sheet 20a of the top sheet and the continuous sheet 30a of the back sheet are welded to each other at positions corresponding to the outer peripheral edge portions 20e and 30e forming the outline of the napkin 1. Are joined together. As a result, a napkin continuous body 1a in which a plurality of napkins 1, 1... Are continuous in the longitudinal direction is generated, and the continuous body 1a is sent to the die cutter device 70 downstream in the transport direction.

  The die cutter device 70 has a pair of rotating rolls 70 u and 70 d, and an outer peripheral surface of one of the rolls 70 d has a punching blade 72 having a shape corresponding to the contour shape of the napkin 1. Therefore, when the napkin continuous body 1a passes through the position of the die cutter device 70, the napkin 1 is individually punched from the napkin continuous body 1a by the punching blade 72, thereby generating a single-cut napkin 1 Is done.

  Incidentally, from the viewpoint of migration to the absorbent 10 (that is, the first covering sheet 11, the absorbent core 10c, and the second covering sheet 12) of the antibacterial agent applied to the continuous sheet 20a of the top sheet, at least the above The antibacterial agent of the sheet 20a is preferably not dried until the continuous sheet 20a of the top sheet is brought into contact with the absorbent body 10 at the merging position Pj20a, and in this example, this is the case.

  8A and 8B are explanatory diagrams of a napkin 1 according to a first modification of the present embodiment. FIG. 8A is a schematic plan view of the napkin 1 viewed from the skin side in the thickness direction, and FIG. 8B is a schematic exploded view taken along line BB in FIG. 8A.

  In the above-described embodiment, as shown in FIGS. 1 and 3, the napkin 1 does not have so-called side seats 25 and 25 at each end in the width direction. Sheets 25 are provided. And this point is mainly different from the above-described embodiment, and other points are almost the same. Therefore, in the following, this difference will be mainly described, and the same components as those in the above-described embodiment will be denoted by the same reference numerals and description thereof will be omitted.

  In the first modified example, as shown in FIGS. 8A and 8B, the dimension in the width direction of the top sheet 20 is smaller than that of the above-described embodiment. That is, the top sheet 20 slightly protrudes outward in the width direction from the absorbent core 10 c, but does not extend to the position of the outline of the napkin 1. Thus, the end portions 30ew and 30ew in the width direction of the back sheet 30 forming the outline of the napkin 1 are in a state of protruding outward in the width direction from the top sheet 20. On the other hand, side sheets 25 and 25 are provided on the respective end portions 20ew1 and 20ew1 in the width direction of the top sheet 20 so as to protrude outward in the width direction from the top sheet 20 over the entire length in the longitudinal direction. And thereby, these side sheets 25 and 25 overlap with each edge part 30ew and 30ew of the width direction of the back sheet 30, and are joined by adhesion | attachment, welding, etc., and, thereby, these side sheet 25 and the back sheet 30 of The end portions 30ew cooperate with each other to form the outer contour of the napkin 1.

  In addition, the side sheet 25 is formed of a nonwoven fabric as an example of a sheet formed of fibers, and on the skin side surface so as to cover the skin side surface of the end portion 20ew1 in the width direction of the top sheet 20 as illustrated in FIG. 8B. They are arranged in layers. The overlapping portion 25p and the end portion 20ew1 of the top sheet 20 are pressure-bonded, whereby the side sheet 25 and the top sheet 20 are joined and integrated. In addition, as a trace of this crimping, a plurality of rectangular crimping parts E25, E25... (Corresponding to “crimped part”) are formed in the overlapping portion 25p (see FIG. 8A). .

Here, also in this first modified example, the central portion 20cw1 in the width direction of the top sheet 20 is present in the presence area AR where the antibacterial agent is present (refer to the area indicated by the dot pattern in FIG. 8A). However, the end portion 20ew1 in the width direction of the top sheet 20 is a non-existing region ARN where no antibacterial agent is present. Therefore, it is suppressing effectively hurting the skin of the crotch of a wear subject. Details are as follows.
First, the crimping parts E25, E25... In the side sheet 25 have a high fiber density (g / cm ³ ) based on the crimping. Therefore, when the continuous sheet (not shown) of the side sheet 25 is pressure-bonded to the continuous sheet 20a of the top sheet in the production line LM, the liquid antibacterial agent is applied toward the non-skin side of the continuous sheet 20a of the top sheet. The liquid antibacterial agent applied to the continuous sheet 20a is likely to move to the crimping parts E25, E25,. On the other hand, since the skin side surface of the side sheet 25 is a portion that can hit the base of the leg in the crotch of the wear target person, the side sheet 25 easily hurts the skin particularly by rubbing the skin of the wear target person. And when this side sheet 25 has an antibacterial agent, there exists a possibility of promoting this aching.

  In this regard, in the first modification, the end portion 20ew1 of the topsheet 20 where the crimping portion E25 is located is a non-existing region ARN where no antibacterial agent is present. 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. It is possible to effectively avoid damaging the skin.

FIG. 9 is an explanatory diagram of a napkin 1 according to a second modification of the present embodiment, and is a schematic plan view of the napkin 1 viewed from the skin side in the thickness direction.
In the above-described embodiment, the antibacterial agent application region (existing region) AR is formed so as to protrude outward in the width direction from the absorbent core 10c as shown in FIG. The antibacterial agent application area AR is formed so as not to protrude outward in the width direction from the conductive core 10c, that is, to fit inside the width direction of the core 10c.

  Therefore, in the case of this second modification, the antibacterial agent application area AR on the non-skin side surface of the continuous sheet 20a of the top sheet is substantially covered with the same core 10c at the above-described merging position Pj20a in the production line LM of FIG. It becomes a broken state. That is, the application area AR does not 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, various devices located on the non-skin side of the continuous sheet 20a of the top sheet, for example, the upper roll 60u of the embossing device 60 are disposed on the non-skin side surface of the sheet 20a. Problems such as corrosion caused by the antibacterial agent that can be caused by contact can be effectively prevented by contacting the roll 60u with the core 10c instead of the non-skin side surface of the sheet 20a.

  And this 2nd modification differs from the above-mentioned embodiment mainly by the point mentioned above, and other points are substantially the same. For this reason, the same components as those in the above-described embodiment are denoted by the same reference numerals, and description thereof is omitted.

  Incidentally, from the viewpoint of preventing corrosion due to the above-described antibacterial agent, a so-called suction belt conveyor may be applied to the belt conveyor CVa located immediately downstream of the joining position Pj20a shown in FIG. In this way, the surplus antibacterial agent of the continuous sheet 20a of the top sheet is removed by suction from a plurality of suction holes (not shown) of the endless belt CVB that forms the transport path of the conveyor CVa. It can be removed by suction via the skin side. Therefore, in subsequent conveyance paths, various devices located on the skin side of the continuous sheet 20a of the top sheet, for example, the lower roll 60d of the embossing device 60 may be caused by contact with the skin side surface of the sheet 20a. It is possible to effectively prevent defects such as corrosion.

=== Other Embodiments ===
As mentioned above, although embodiment of this invention was described, said embodiment is for making an understanding of this invention easy, and is not for limiting and interpreting this invention. Further, the present invention can be changed or improved without departing from the gist thereof, and needless to say, the present invention includes equivalents thereof. For example, the following modifications are possible.

  In the above embodiment, as shown in FIG. 3, the top sheet 20, the first covering sheet 11, the absorbent core 10 c, and the second covering sheet 12 each contain an antibacterial agent. Not limited to this. For example, the absorbent core 10c and the second covering sheet 12 may not contain an antibacterial agent. However, the absorptive core 10c is a member that absorbs most of the excretory liquid and finally holds the liquid for a long period of time. Therefore, it is desirable that the core 10c also contains an antibacterial agent from the viewpoint of effectively exerting an antibacterial action on the excretory fluid.

In the above-described embodiment, as illustrated in FIG. 3, the first covering sheet 11 is illustrated as an example of the liquid-permeable sheet that contacts the non-skin side surface of the top sheet 20. And, the sheet 11 is a core wrap sheet that comes into contact with and covers the skin side surface of the so-called absorbent core 10c.
Not limited to this. For example, the liquid permeable sheet may be a so-called second sheet disposed between the top sheet 20 and the absorber 10. That is, the liquid permeable sheet may be a sheet disposed between the top sheet 20 and the core wrap sheet (first covering sheet 11).

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

  In the above-described embodiment, the sanitary napkin 1 is illustrated as an absorbent article, but the present invention is not limited thereto. For example, the absorbent article may be a urine-absorbing pad or panty liner that is also fixed to underwear such as shorts and absorbs excreted fluid such as urine, and more specifically, a waistline opening and a pair of legs. It may be a disposable diaper or a so-called pet sheet as an absorbent article having an opening.

  In the above-described embodiment, a single-layer sheet is exemplified as the top sheet 20, but a multi-layer sheet may be used. That is, a multilayer sheet formed by joining a sheet forming a skin side layer and a sheet forming a non-skin side layer may be used. In this case, the sheet forming the latter non-skin side layer may be interpreted as the second sheet described above. That is, a sheet in which the sheet forming the skin side layer and the second sheet are joined may be interpreted as a “top sheet” according to the claims. In this case, the “liquid permeable sheet” according to the claims refers to, for example, the aforementioned core wrap sheet.

DESCRIPTION OF SYMBOLS 1 Sanitary napkin (absorbent article), 1a Continuous body of napkin, 1w wing part, 10 absorber, 10c absorbent core, 11 1st coating sheet (liquid permeable sheet, base sheet of liquid permeable sheet), 12 second covering sheet (second sheet), 20 top sheet, 20a continuous sheet of top sheet (base sheet of top sheet), 20ar sheet roll,
20 cw center part, 20 cw 1 center part, 20 e outer peripheral edge part, 20 ew 1 end part, 20 w part, 25 side sheet, 25 p part, 30 back sheet, 30 a back sheet continuous sheet, 30 c part, 30 ew end part, 30 w part, 40 c adhesive Part, 40w adhesive part, 50 feeding device, 53 antibacterial agent coating device, 55 adhesive coating device, 60 embossing device, 60d upper roll, 60u lower roll, 65 round seal device, 65d upper roll, 65u lower roll, 70 die Cutter device, 70d upper roll, 70u lower roll, 72 cutter blade, AR existence area (antibacterial agent application area, applied area), ARc center, ARe end, ARN non-existence area, AEML area, EM pressing part, EMD point-like pressing part, EML linear pressing part, ED10 pressing part, E25 Crimped part (crimped part), HMA adhesive, PHMA adhesive present part, PHMAN adhesive non-existing part, LM production line, CV belt conveyor, CVa belt conveyor, CVB endless belt, P20ar feeding position, Pj20a merged position, P53 application position, P55 application position, Pj30a merge position,

Claims (19)

An absorbent article having a longitudinal direction, a width direction, and a thickness direction orthogonal to each other,
A liquid-permeable top sheet that contacts the skin of the person to be worn;
A liquid permeable sheet disposed in contact with the non-skin side surface in the thickness direction of the top sheet,
The top sheet contains an antibacterial agent,
An absorbent article, wherein the liquid-permeable sheet also contains an antibacterial agent. The absorbent article according to claim 1,
An absorbent article, wherein the amount of the antibacterial agent contained in the top sheet is greater than the amount of the antibacterial agent contained in the liquid permeable sheet. The absorbent article according to claim 1 or 2,
The absorbent article, 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 agents. The absorbent article according to any one of claims 1 to 3,
An absorbent core that absorbs liquid is disposed on the non-skin side in the thickness direction of the liquid permeable sheet,
An absorbent article, wherein the absorbent core also contains an antibacterial agent. The absorbent article according to any one of claims 1 to 4,
Absorptive article in which the non-existence field where the antibacterial agent does not exist is formed in each end of the top sheet in the width direction. The absorbent article according to claim 5,
A side sheet provided on the end portion of the top sheet so as to protrude outward in the width direction from the end portion while being overlapped from the skin side in the thickness direction;
The top sheet and the side sheet are both formed of fibers, and the side sheet has a portion that is crimped to the end of the top sheet. The absorbent article according to any one of claims 1 to 6,
The liquid permeable sheet has a colored portion colored differently from the material color of the liquid permeable sheet,
The colored article is provided so as to be visible from the top sheet side in the thickness direction through the top sheet. The absorbent article according to any one of claims 1 to 7,
An absorptive core that is in contact with the non-skin side surface in the thickness direction of the liquid permeable sheet and absorbs the liquid;
A second sheet that contacts the non-skin side surface of the absorbent core in the thickness direction;
The top sheet, the liquid-permeable sheet, the absorbent core, and the second sheet are squeezed together from the skin side in the thickness direction, and
Absorbent article characterized in that an antibacterial agent is present in the pressing part The absorbent article according to claim 8, wherein
The liquid permeable sheet and the second sheet are each formed of fibers,
When compared with the fiber density of the liquid permeable sheet (g / cm ³⁾ and the fiber density of the second sheet (g / cm ³⁾ in the pressing section, the larger fiber density of the second sheet An absorbent article characterized by the above. A liquid-permeable top sheet that has a longitudinal direction, a width direction, and a thickness direction that are orthogonal to each other, and that is in contact with the non-skin side surface of the top sheet in the thickness direction. A liquid permeable sheet, and a method for producing an absorbent article comprising:
Applying an antibacterial agent to the base sheet of the top sheet;
Bringing the base sheet of the liquid-permeable sheet into contact with the non-skin side surface in the thickness direction of the base sheet of the top sheet coated with the antibacterial agent;
A part of the antibacterial agent is transferred from the base sheet of the top sheet to the base sheet of the liquid permeable sheet. It is a manufacturing method of an absorptive article according to claim 10,
In the said application | coating, the said antibacterial agent is apply | coated to the said non-skin side surface of the base material sheet of the said top sheet, The manufacturing method of the absorbent article characterized by the above-mentioned. It is a manufacturing method of the absorptive article according to claim 11,
Between applying and applying the adhesive, an adhesive is applied to the non-skin side surface,
In the contacting, the base sheet of the liquid permeable sheet is fixed with the adhesive to the non-skin side surface of the base sheet of the top sheet,
The region where the antibacterial agent is applied on the non-skin side has an adhesive-existing portion where the adhesive is present and an adhesive-existing portion where the adhesive is not present. Method. It is a manufacturing method of the absorptive article according to claim 12,
The method for producing an absorbent article, wherein a ratio of the adhesive non-existing portion in a region where the antibacterial agent is applied is larger than a ratio of the adhesive existing portion in the region. A method for manufacturing an absorbent article according to any one of claims 10 to 13,
The antimicrobial agent is a liquid;
The method for producing an absorbent article, wherein the abutment is performed before the antibacterial agent applied to the base sheet of the top sheet is dried. It is a manufacturing method of the absorptive article according to claim 14,
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 manufacturing an absorbent article according to any one of claims 10 to 15,
The base sheet of the top sheet and the base sheet of the liquid permeable sheet are each formed of fibers,
In the contacting, the fiber density (g / cm ³ ) of the base sheet of the liquid-permeable sheet is larger than the fiber density (g / cm ³ ) of the base sheet of the top sheet. A method for producing an absorbent article. A method for producing an absorbent article according to any one of claims 10 to 16,
On the non-skin side in the thickness direction than the base sheet of the liquid permeable sheet, an absorbent core that absorbs liquid is provided,
In applying, the antibacterial agent is applied to the base sheet of the top sheet so as to protrude in the width direction and the longitudinal direction from the absorbent core,
In the transfer, a part of the antibacterial agent is transferred to the absorbent core via the base sheet of the liquid permeable sheet. A method for producing an absorbent article according to any one of claims 10 to 16,
On the non-skin side in the thickness direction than the base sheet of the liquid permeable sheet, an absorbent core that absorbs liquid is provided,
In applying, the antibacterial agent is applied to the base sheet of the top sheet so as not to protrude in the width direction than the absorbent core,
In the transfer, a part of the antibacterial agent is transferred to the absorbent core via the base sheet of the liquid permeable sheet. A method for manufacturing an absorbent article according to any one of claims 10 to 18,
The abutting is performed at a joining position where the transport path of the base sheet of the top sheet joins the transport path of the base sheet of the liquid permeable sheet,
A feeding position for feeding the base sheet of the top sheet from a sheet roll is set at a position upstream of the application position for applying the antibacterial agent in the conveyance path of the base sheet of the top sheet. ,
The manufacturing method of an absorbent article, wherein the application position in the conveyance path of the base sheet of the top sheet is closer to the joining position than the feeding position.

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