WO2021125234A1 - Auxiliary napkin and napkin set - Google Patents

Abstract

An auxiliary napkin (1) is attached to the skin-side surface of a sanitary napkin (2) before use and has an attachment section (31) on the non-skin-side surface of the auxiliary napkin (1). The sanitary napkin (2) has an adhesive section (41) on the non-skin-side surface. The average magnitude of force required to remove the auxiliary napkin (1) from a second auxiliary napkin (1B) in the longitudinal direction after attaching the entire area of the unused attachment section (31) to the skin-side surface of the second auxiliary napkin (1B) is smaller than the average magnitude of force required to remove the sanitary napkin (2) from the second auxiliary napkin (1B) in the longitudinal direction after attaching an area extending the entire width and 50 mm in the longitudinal direction in the unused adhesive section (41) to the skin-side surface of the second auxiliary napkin (1B).

Description

Auxiliary napkin and napkin set

The present invention relates to an auxiliary napkin and a napkin set.

Conventionally, sanitary napkins containing an absorber have been widely used as hygiene products for women that absorb body fluids. Then, a method has been proposed in which an auxiliary napkin is superposed on the skin side surface of the sanitary napkin to improve the absorption performance of body fluids and the like, and the sanitary napkin can be used efficiently. For example, Patent Document 1 discloses an absorbent article for attaching an auxiliary pad capable of attaching the auxiliary pad 2 in close contact with the labia majora to the body side (skin side) surface of the sanitary napkin 1 for attaching the auxiliary pad. ing.

Japanese Unexamined Patent Publication No. 2003-38564

The problem to be solved by the present invention is at least one of the following first and second problems.

The first issue is that when using such an auxiliary napkin in recent years, it is desired to prolong the life of the sanitary napkin by exchanging only the auxiliary napkin that has absorbed the body fluid and reducing the frequency of exchanging the sanitary napkin itself. Is increasing. At that time, it is desirable that the auxiliary napkin can be easily attached to and detached from the sanitary napkin. For example, when a wearer replaces an auxiliary napkin in a small space such as a private room in a toilet, the auxiliary napkin can be attached to or removed from the sanitary napkin fixed to the underwear with only one hand. desirable.

However, although the absorbent article of Patent Document 1 is disclosed to be provided with a guide element for guiding the attachment position when attaching the auxiliary pad (auxiliary napkin), the convenience when removing the auxiliary napkin and the convenience Operability is not considered. In this case, it is difficult for the user to easily remove and replace only the auxiliary napkin from the sanitary napkin.

The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide an auxiliary napkin that can be easily attached to and detached from a sanitary napkin.

The second issue is the desire to prolong the life of sanitary napkins by replacing only the auxiliary napkins that have absorbed body fluids and reducing the frequency of replacement of the sanitary napkins themselves when using such auxiliary napkins. Is increasing. In such a usage method, the ease of replacement work when replacing the auxiliary napkin becomes important. For example, whether you want to replace only the auxiliary napkin without replacing the sanitary napkin, or when you want to replace the sanitary napkin and the auxiliary napkin together, the user can easily replace the sanitary napkin without stress. It is desirable to be able to do. However, although the absorbent article of Patent Document 1 is disclosed to be provided with a guide element for guiding the attachment position when attaching the auxiliary pad (auxiliary napkin), the work of replacing the auxiliary napkin or the sanitary napkin is performed. No consideration is given to the ease of use.

The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide a sanitary napkin and an auxiliary napkin in which the auxiliary napkin can be easily replaced.

The main invention for achieving the first object is an auxiliary napkin that has a longitudinal direction and a width direction that intersect each other and is used by being attached to the skin side surface of a sanitary napkin, and is a non-auxiliary napkin. An attachment portion for attaching the auxiliary napkin to the skin side surface of the sanitary napkin is provided on the skin side surface, and the sanitary napkin is fixed to the user's underwear on the non-skin side surface of the sanitary napkin. An adhesive portion is provided to attach the entire area of the attachment portion in an unused state to the skin side surface of the second auxiliary napkin having the same configuration as the auxiliary napkin, and then along the longitudinal direction. The average value of the magnitude of the force applied when the auxiliary napkin is peeled off from the second auxiliary napkin is the entire 50 mm region in the width direction and the longitudinal direction of the unused adhesive portion of the second auxiliary napkin. It is characterized in that it is smaller than the average value of the magnitude of the force applied when the sanitary napkin is peeled from the second auxiliary napkin along the longitudinal direction of the sanitary napkin after being attached to the skin side surface of the napkin. It is an auxiliary napkin.

The main invention for achieving the second object is an auxiliary napkin that has a longitudinal direction and a width direction that intersect each other and is used by being attached to the skin side surface of a sanitary napkin, and is a non-auxiliary napkin. An attachment portion for attaching the auxiliary napkin to the skin side surface of the sanitary napkin is provided on the skin side surface, and the sanitary napkin is fixed to the user's underwear on the non-skin side surface of the sanitary napkin. An adhesive portion is provided to attach the entire area of the attachment portion in an unused state to the skin side surface of the second auxiliary napkin having the same configuration as the auxiliary napkin, and then along the longitudinal direction. The average value of the magnitude of the force applied when the auxiliary napkin is peeled off from the second auxiliary napkin is the entire 50 mm region in the width direction and the longitudinal direction of the unused adhesive portion of the second auxiliary napkin. It is characterized in that it is equal to or greater than the average value of the magnitude of the force applied when the sanitary napkin is peeled from the second auxiliary napkin along the longitudinal direction of the sanitary napkin after being attached to the skin side surface of the napkin. It is an auxiliary napkin.
Other features of the present invention will be clarified by the description in the present specification and the accompanying drawings.

The effect of the present invention on the first problem is to provide an auxiliary napkin that can be easily attached to and detached from a sanitary napkin.

The effect of the present invention on the second problem is that it is possible to provide an auxiliary napkin in which the sanitary napkin and the auxiliary napkin can be easily replaced.

It is a schematic plan view which shows the state which the auxiliary napkin 1 was seen from the skin side and the non-skin side. It is sectional drawing which shows the line AA shown in FIG. FIG. 5 is a schematic plan view showing a state in which the sanitary napkin 2 is viewed from the skin side and the non-skin side. FIG. 3 is a schematic cross-sectional view taken along the line BB shown in FIG. It is a schematic plan view which shows the state which attached the auxiliary napkin 1 to the skin side of the sanitary napkin 2. 6A and 6B are perspective views illustrating attachment / detachment of the auxiliary napkin 1. It is a figure explaining the evaluation method of the peel strength of the attachment part 31 of the auxiliary napkin 1. It is a table which shows the data which measured the peel strength of the 1st auxiliary napkin 1A with respect to the 2nd auxiliary napkin 1B. It is a figure explaining the evaluation method of the peel strength of the adhesive part 41 of the sanitary napkin 2 with respect to the 2nd auxiliary napkin 1B. It is a table which shows the data which measured the peel strength of the sanitary napkin 2 with respect to the 2nd auxiliary napkin 1B. It is a table which shows the result of having verified about the change of the peeling strength when the attachment part 31 of the auxiliary napkin 1 was repeatedly attached and detached. It is a figure explaining the evaluation method of the peel strength of the adhesive part 41 of a sanitary napkin 2. It is a table which shows the result of having measured the peel strength of the adhesive part 41 about a plurality of kinds of sanitary napkins 2. 14A to 14C are perspective views illustrating attachment / detachment of the auxiliary napkin 1. It is a table which shows the data which measured the peel strength of the 1st auxiliary napkin 1A with respect to the 2nd auxiliary napkin 1B. It is a table which shows the data which measured the peel strength of the sanitary napkin 2 with respect to the 2nd auxiliary napkin 1B. It is a table which shows the result of having verified about the change of the peeling strength when the attachment part 31 of the auxiliary napkin 1 was repeatedly attached and detached. It is a table which shows the result of having measured the peel strength of the adhesive part 41 about a plurality of kinds of sanitary napkins 2.

The description of this specification and the accompanying drawings will clarify at least the following matters.
An auxiliary napkin that has a longitudinal direction and a width direction that intersect each other and is used by being attached to the skin side surface of the sanitary napkin. An attachment portion for attaching the auxiliary napkin is provided, and an adhesive portion for fixing the sanitary napkin to the user's underwear is provided on the non-skin side surface of the sanitary napkin, and is in an unused state. It is applied when the entire area of the attachment portion is attached to the skin side surface of the second auxiliary napkin having the same configuration as the auxiliary napkin, and then the auxiliary napkin is peeled off from the second auxiliary napkin along the longitudinal direction. The average value of the magnitude of the force is obtained after a region of 50 mm in the entire width direction and 50 mm in the longitudinal direction of the unused adhesive portion is attached to the skin side surface of the second auxiliary napkin, and then the sanitary napkin is used. An auxiliary napkin characterized in that it is smaller than the average value of the magnitude of the force applied when the sanitary napkin is peeled from the second auxiliary napkin along the longitudinal direction of the napkin.

According to such an auxiliary napkin, the attachment part of the auxiliary napkin can be easily peeled off from the sanitary napkin along the longitudinal direction without peeling the adhesive part of the sanitary napkin from the user's underwear. Therefore, the auxiliary napkin can be easily attached to and detached from the sanitary napkin.

When the entire area of the mounting portion of the auxiliary napkin in an unused state is attached to the skin side surface of the second auxiliary napkin, and then the auxiliary napkin is peeled off from the second auxiliary napkin along the width direction. The average value of the magnitude of the force applied to the force is obtained after a region of 50 mm in the entire width direction and 50 mm in the longitudinal direction of the unused adhesive portion is attached to the skin side surface of the second auxiliary napkin. It is desirable that it is smaller than the average value of the magnitude of the force applied when peeling the sanitary napkin from the second auxiliary napkin along the width direction of the sanitary napkin.

According to such an auxiliary napkin, the attachment portion of the auxiliary napkin can be easily peeled off from the sanitary napkin along the width direction without peeling the adhesive portion of the sanitary napkin from the user's underwear. Therefore, the auxiliary napkin can be easily attached to and detached from the sanitary napkin.

It is desirable that the length of the auxiliary napkin in the longitudinal direction is shorter than the length of the sanitary napkin in the longitudinal direction.

According to such an auxiliary napkin, even if a liquid leak occurs outside the auxiliary napkin, it is absorbed by the absorber of the sanitary napkin, so that it is difficult to stain the underwear of the user (wearer). Further, when attaching the auxiliary napkin, strict position adjustment in the longitudinal direction is not required, and when removing the auxiliary napkin, it is difficult for the auxiliary napkin that has absorbed menstrual blood to come into contact with the wearer's underwear. Therefore, the auxiliary napkin can be easily attached and detached.

In such an auxiliary napkin, the sanitary napkin is provided with first folds and second folds, which are folds for packing the sanitary napkin, at different positions in the longitudinal direction of the sanitary napkin, respectively. Therefore, it is desirable that the length of the auxiliary napkin in the longitudinal direction is longer than the distance between the first fold and the second fold in the longitudinal direction of the sanitary napkin.

According to such an auxiliary napkin, when arranging the auxiliary napkin on the skin side surface of the sanitary napkin, the position of the auxiliary napkin can be adjusted with reference to the creases F1 and F2. Therefore, the work of attaching the auxiliary napkin 1 becomes easier.

It is desirable that the color of the sanitary napkin and the color of the auxiliary napkin are different from each other.

According to such an auxiliary napkin, the outline of the auxiliary napkin can be easily visually recognized even when it is overlapped with the sanitary napkin. Therefore, the user can easily recognize whether or not the mounting position of the auxiliary napkin is appropriate for the sanitary napkin. Also, when removing the auxiliary napkin, it becomes easier to recognize where to hold the auxiliary napkin.

It is desirable that the color of the auxiliary napkin is a color included in the range of 4 to 9 in the hue number of the Ostwald hue circle.

According to such an auxiliary napkin, the color of the absorber is red, so that the effect of concealing the absorbed menstrual blood can be obtained. As a result, when replacing a used auxiliary napkin, the user can dispose of the used auxiliary napkin without worrying about the eyes of others, and it is easy to replace the auxiliary napkin. It will be easier to do.

It is desirable that the auxiliary napkin is detachable from the skin side surface of the sanitary napkin.

According to such an auxiliary napkin, the auxiliary napkin can be repeatedly attached and detached to and from the skin side surface of the sanitary napkin a plurality of times. Therefore, the position can be easily changed and adjusted after the auxiliary napkin is attached, and the auxiliary napkin attachment work becomes easier.

It is desirable that the auxiliary napkin is such that the mounting portion is composed of a hook-and-loop fastener.

According to such an auxiliary napkin, even when the attachment portion is engaged with the skin side surface of the sanitary napkin and then peeled off, the engagement force of the attachment portion is unlikely to decrease. Therefore, the attachment portion can be repeatedly attached to and detached from the sanitary napkin, and the attachment work of the auxiliary napkin becomes easier.

It is desirable that such an auxiliary napkin is provided with a predetermined gap between one end of the mounting portion and the one end of the auxiliary napkin in the longitudinal direction.

According to such an auxiliary napkin, when the auxiliary napkin is removed from the skin side surface of the sanitary napkin, the user can easily grasp the gap and pull the auxiliary napkin. As a result, the auxiliary napkin can be easily attached and detached.

It is desirable that the auxiliary napkin is not provided with a gap between one end of the mounting portion and the one end of the auxiliary napkin in the longitudinal direction.

According to such an auxiliary napkin, the engaging force of the attachment portion becomes larger, so that the auxiliary napkin can be more firmly fixed to the skin side surface of the sanitary napkin. Therefore, even when the user walks or exercises while wearing the auxiliary napkin and the sanitary napkin, it is possible to prevent the auxiliary napkin from being displaced.

It is desirable that the auxiliary napkin is not provided with the mounting portion at the central portion in the width direction.

According to such an auxiliary napkin, the rigidity in the central portion in the width direction is lower than the rigidity in the both side portions. Therefore, when mounted, the auxiliary napkin is easily bent and deformed at the central portion in the width direction, and is easily deformed into a substantially mountain-shaped shape in which the central portion in the width direction is convex in the thickness direction. As a result, the auxiliary napkin is likely to come into contact with the wearer's body, the fit is improved, and excrement fluid such as menstrual blood is easily absorbed.

It is desirable that the auxiliary napkin is provided with a bending guide line extending in the longitudinal direction at the central portion in the width direction.

According to such an auxiliary napkin, since the auxiliary napkin is bent by the bending guide wire, convex deformation is more likely to occur at the time of mounting, and the auxiliary napkin is compactly packaged in a state of being folded in half in the width direction. can do.

Such an auxiliary napkin, a liquid-absorbing absorber, a liquid-impermeable back sheet provided on the non-skin side of the absorbent body, and the like.
It is desirable to have.

According to such an auxiliary napkin, when the auxiliary napkin is used on the skin side of the sanitary napkin, the menstrual blood absorbed by the absorber of the auxiliary napkin can be transferred to the absorber of the sanitary napkin. It is suppressed. Therefore, the absorber of the sanitary napkin is less likely to get dirty, and the sanitary napkin can be made to last longer.

Of the unused adhesive portion of the auxiliary napkin, the entire area of the sanitary napkin in the width direction and the region of 50 mm in the longitudinal direction of the sanitary napkin are covered with a white cloth for testing in accordance with JIS L0803. The average value of the magnitude of the force applied when the sanitary napkin is peeled off from the cotton of the test attachment white cloth along the longitudinal direction of the sanitary napkin after being attached to the cotton of the test is 2.87N or more, 13. It is desirable that the sanitary napkin of 12 N or less is used by being attached to the skin side surface.

According to such an auxiliary napkin, it is possible to realize an auxiliary napkin that is easy to put on and take off from a plurality of types of commercially available sanitary napkins.

Further, it is a napkin set having a sanitary napkin and an auxiliary napkin attached to the skin side surface of the sanitary napkin, and the non-skin side surface of the auxiliary napkin is the skin side surface of the sanitary napkin. Is provided with an attachment portion for attaching the auxiliary napkin, and an adhesive portion for fixing the sanitary napkin to the user's underwear is provided on the non-skin side surface of the sanitary napkin and is unused. The entire area of the attachment portion in the state is attached to the skin side surface of the second auxiliary napkin having the same configuration as the auxiliary napkin, and then the auxiliary napkin is attached from the second auxiliary napkin along the longitudinal direction of the auxiliary napkin. The average value of the magnitude of the force applied at the time of peeling is obtained after a region of 50 mm in the entire width direction and 50 mm in the longitudinal direction of the unused adhesive portion is attached to the skin side surface of the second auxiliary napkin. , A napkin set characterized in that it is smaller than the average value of the magnitude of the force applied when peeling the sanitary napkin from the second auxiliary napkin along the longitudinal direction of the sanitary napkin becomes clear.

According to such a napkin set, the attachment part of the auxiliary napkin can be easily peeled off from the sanitary napkin along the longitudinal direction without peeling off the adhesive part of the sanitary napkin from the user's underwear. Therefore, the auxiliary napkin can be easily attached to and detached from the sanitary napkin.

Further, it is an auxiliary napkin that has a longitudinal direction and a width direction that intersect each other and is used by being attached to the skin side surface of the sanitary napkin, and the non-skin side surface of the auxiliary napkin is the skin of the sanitary napkin. A mounting portion for attaching the auxiliary napkin is provided on the side surface, and an adhesive portion for fixing the sanitary napkin to the user's underwear is provided on the non-skin side surface of the sanitary napkin. When the entire area of the attachment portion in use is attached to the skin side surface of the second auxiliary napkin having the same configuration as the auxiliary napkin, and then the auxiliary napkin is peeled off from the second auxiliary napkin along the longitudinal direction. The average value of the magnitude of the force applied to the force is obtained after a region of 50 mm in the entire width direction and 50 mm in the longitudinal direction of the unused adhesive portion is attached to the skin side surface of the second auxiliary napkin. An auxiliary napkin characterized in that it is equal to or greater than the average value of the magnitude of the force applied when the sanitary napkin is peeled from the second auxiliary napkin along the longitudinal direction of the sanitary napkin becomes clear.

According to such an auxiliary napkin, by pulling the auxiliary napkin in the longitudinal direction while holding the sanitary napkin, it is possible to remove only the auxiliary napkin from the sanitary napkin. On the other hand, by pulling the auxiliary napkin in the longitudinal direction without pressing the sanitary napkin, the sanitary napkin can be removed together with the auxiliary napkin. Therefore, the user can easily replace the auxiliary napkin and the sanitary napkin.

When the entire area of the mounting portion of the auxiliary napkin in an unused state is attached to the skin side surface of the second auxiliary napkin, and then the auxiliary napkin is peeled off from the second auxiliary napkin along the width direction. The average value of the magnitude of the force applied to the force is obtained after a region of 50 mm in the entire width direction and 50 mm in the longitudinal direction of the unused adhesive portion is attached to the skin side surface of the second auxiliary napkin. It is desirable that the value is equal to or greater than the average value of the magnitude of the force applied when the sanitary napkin is peeled from the second auxiliary napkin along the width direction of the sanitary napkin.

According to such an auxiliary napkin, by pulling the auxiliary napkin in the width direction while holding the sanitary napkin, it is possible to remove only the auxiliary napkin from the sanitary napkin. On the other hand, by pulling the auxiliary napkin in the width direction without pressing the sanitary napkin, the sanitary napkin can be removed together with the auxiliary napkin. Therefore, the user can easily replace the auxiliary napkin and the sanitary napkin.

It is desirable that the length of the auxiliary napkin in the longitudinal direction is shorter than the length of the sanitary napkin in the longitudinal direction.

According to such an auxiliary napkin, even if a liquid leak occurs outside the auxiliary napkin, it is absorbed by the absorber of the sanitary napkin, so that it is difficult to stain the underwear of the user (wearer). Further, when attaching the auxiliary napkin, strict position adjustment in the longitudinal direction is not required, and when removing the auxiliary napkin, it is difficult for the auxiliary napkin that has absorbed menstrual blood to come into contact with the wearer's underwear. Therefore, the auxiliary napkin can be easily attached and detached.

In such an auxiliary napkin, the sanitary napkin is provided with first folds and second folds, which are folds for packing the sanitary napkin, at different positions in the longitudinal direction of the sanitary napkin, respectively. Therefore, it is desirable that the length of the auxiliary napkin in the longitudinal direction is longer than the distance between the first fold and the second fold in the longitudinal direction of the sanitary napkin.

According to such an auxiliary napkin, when arranging the auxiliary napkin on the skin side surface of the sanitary napkin, the position of the auxiliary napkin can be adjusted with reference to the creases F1 and F2. Therefore, the work of attaching the auxiliary napkin 1 becomes easier.

It is desirable that the color of the sanitary napkin and the color of the auxiliary napkin are different from each other.

According to such an auxiliary napkin, the outline of the auxiliary napkin can be easily visually recognized even when it is overlapped with the sanitary napkin. Therefore, the user can easily recognize whether or not the mounting position of the auxiliary napkin is appropriate for the sanitary napkin. Also, when removing the auxiliary napkin, it becomes easier to recognize where to hold the auxiliary napkin.

It is desirable that the color of the auxiliary napkin is a color included in the range of 4 to 9 in the hue number of the Ostwald hue circle.

According to such an auxiliary napkin, the color of the absorber is red, so that the effect of concealing the absorbed menstrual blood can be obtained. As a result, when replacing a used auxiliary napkin, the user can dispose of the used auxiliary napkin without worrying about the eyes of others, and it is easy to replace the auxiliary napkin. It will be easier to do.

It is desirable that the auxiliary napkin is detachable from the skin side surface of the sanitary napkin.

According to such an auxiliary napkin, the auxiliary napkin can be repeatedly attached and detached to and from the skin side surface of the sanitary napkin a plurality of times. Therefore, the position can be easily changed and adjusted after the auxiliary napkin is attached, and the auxiliary napkin attachment work becomes easier.

It is desirable that the auxiliary napkin is such that the mounting portion includes a hook-and-loop fastener.

According to such an auxiliary napkin, even when the attachment portion is engaged with the skin side surface of the sanitary napkin and then peeled off, the engaging force of the hook-and-loop fastener portion is unlikely to decrease. Therefore, the attachment portion can be repeatedly attached to and detached from the sanitary napkin, and the attachment work of the auxiliary napkin becomes easier.

It is desirable that such an auxiliary napkin is provided with a predetermined gap between one end of the mounting portion and the one end of the auxiliary napkin in the longitudinal direction.

According to such an auxiliary napkin, when the auxiliary napkin is removed from the skin side surface of the sanitary napkin, the user can easily grasp the gap and pull the auxiliary napkin. As a result, the auxiliary napkin can be easily attached and detached.

It is desirable that the auxiliary napkin is not provided with a gap between one end of the mounting portion and the one end of the auxiliary napkin in the longitudinal direction.

According to such an auxiliary napkin, the engaging force of the attachment portion becomes larger, so that the auxiliary napkin can be more firmly fixed to the skin side surface of the sanitary napkin. Therefore, even when the user walks or exercises while wearing the auxiliary napkin and the sanitary napkin, it is possible to prevent the auxiliary napkin from being displaced.

It is desirable that the auxiliary napkin is not provided with the mounting portion at the central portion in the width direction.

According to such an auxiliary napkin, the rigidity in the central portion in the width direction is lower than the rigidity in the both side portions. Therefore, when mounted, the auxiliary napkin is easily bent and deformed at the central portion in the width direction, and is easily deformed into a substantially mountain-shaped shape in which the central portion in the width direction is convex in the thickness direction. As a result, the auxiliary napkin is likely to come into contact with the wearer's body, the fit is improved, and excrement fluid such as menstrual blood is easily absorbed.

It is desirable that the auxiliary napkin is provided with a bending guide line extending in the longitudinal direction at the central portion in the width direction.

According to such an auxiliary napkin, since the auxiliary napkin is bent by the bending guide wire, convex deformation is more likely to occur at the time of mounting, and the auxiliary napkin is compactly packaged in a state of being folded in half in the width direction. can do.

Such an auxiliary napkin, a liquid-absorbing absorber, a liquid-impermeable back sheet provided on the non-skin side of the absorbent body, and the like.
It is desirable to have.

According to such an auxiliary napkin, when the auxiliary napkin is used on the skin side of the sanitary napkin, the menstrual blood absorbed by the absorber of the auxiliary napkin can be transferred to the absorber of the sanitary napkin. It is suppressed. Therefore, the absorber of the sanitary napkin is less likely to get dirty, and the sanitary napkin can be made to last longer.

Of the unused adhesive portion of the auxiliary napkin, the entire area of the sanitary napkin in the width direction and the region of 50 mm in the longitudinal direction of the sanitary napkin are covered with a white cloth for testing in accordance with JIS L0803. 3. The average value of the magnitude of the force applied when peeling the sanitary napkin from the cotton of the white cloth attached to the test along the longitudinal direction of the sanitary napkin after being attached to the cotton of the test is 2.02 N or more. It is desirable that the sanitary napkin of 53 N or less is used by being attached to the skin side surface.

According to such an auxiliary napkin, it is possible to realize an auxiliary napkin that is easy to put on and take off from a plurality of types of commercially available sanitary napkins.

Further, it is a napkin set having a sanitary napkin and an auxiliary napkin attached to the skin side surface of the sanitary napkin, and the non-skin side surface of the auxiliary napkin is the skin side surface of the sanitary napkin. Is provided with an attachment portion for attaching the auxiliary napkin, and an adhesive portion for fixing the sanitary napkin to the user's underwear is provided on the non-skin side surface of the sanitary napkin and is unused. The entire area of the attachment portion in the state is attached to the skin side surface of the second auxiliary napkin having the same configuration as the auxiliary napkin, and then the auxiliary napkin is attached from the second auxiliary napkin along the longitudinal direction of the auxiliary napkin. The average value of the magnitude of the force applied at the time of peeling is obtained after a region of 50 mm in the entire width direction and 50 mm in the longitudinal direction of the unused adhesive portion is attached to the skin side surface of the second auxiliary napkin. , A napkin set characterized in that the magnitude of the force applied when the sanitary napkin is peeled from the second auxiliary napkin along the longitudinal direction of the sanitary napkin is equal to or greater than the average value.

According to such a napkin set, by pulling the auxiliary napkin while holding the sanitary napkin, it is possible to remove only the auxiliary napkin from the sanitary napkin. On the other hand, by pulling the auxiliary napkin without pressing the sanitary napkin, it is possible to remove the sanitary napkin together with the auxiliary napkin. Therefore, the user can easily replace the auxiliary napkin and the sanitary napkin.

=== 1st Embodiment ===
<Basic configuration of auxiliary napkin 1>
An auxiliary napkin 1 to be used on top of a sanitary napkin as a hygiene product for women will be described. FIG. 1 is a schematic plan view showing a state in which the auxiliary napkin 1 is viewed from the skin side and the non-skin side. FIG. 2 is a schematic cross-sectional view taken along the line AA shown in FIG.

The auxiliary napkin 1 is a so-called flat type napkin, which has a substantially oval shape in a plan view and has a longitudinal direction, a width direction, and a thickness direction orthogonal to each other. The longitudinal direction is the direction along the product longitudinal direction of the auxiliary napkin 1, and the width direction is the direction along the product lateral direction of the auxiliary napkin 1. Further, in the thickness direction, the side in contact with the wearer's body is referred to as the skin side, and the opposite side is referred to as the non-skin side.

As shown in FIG. 2, the auxiliary napkin 1 includes an absorber 10, a top sheet 11 arranged on the skin side of the absorber 10, and an intermediate sheet 12 arranged between the absorber 10 and the top sheet 11. On the non-skin side of the absorber 10, the side sheet 13 is arranged so as to extend to both outer sides in the width direction, and the back sheet 14 is arranged on the non-skin side of the absorber 10 and the side sheet 13. .. The materials adjacent to each other in the thickness direction are bonded to each other by an adhesive such as a hot melt adhesive.

The absorber 10 has a superabsorbent polymer (also referred to as “SAP”) and a liquid absorbent fiber such as pulp fiber, and is shown by the broken line in FIG. 1 in the present embodiment. It is formed in a substantially oval shape that is long in the longitudinal direction. The liquid absorbent fiber (absorbent core) containing SAP may be covered with a liquid permeable core wrap sheet (not shown). Further, the configuration of the absorber 10 is not limited to the above, and examples thereof include a SAP sheet in which a SAP layer is attached to a hydrophilic sheet, an air-laid sheet in which liquid absorbent fibers are formed into a sheet by an air-laid method, and the like. ..

The top sheet 11 is a liquid-permeable sheet member arranged on the skin side most in the thickness direction of the auxiliary napkin 1, and is a member that comes into direct contact with the wearer's skin when the auxiliary napkin 1 is used. Therefore, it is desirable that the top sheet 11 is a sheet member that is as flexible as possible and soft to the touch. Examples of the sheet member constituting the top sheet 11 of the present embodiment include an air-through non-woven fabric and the like. Further, as shown in FIG. 2, the top sheet 11 of the present embodiment is arranged so as to cover the absorber 10 from the skin side, and both end portions in the width direction are folded into the non-skin side of the absorber 10. ing,

The intermediate sheet 12 is a liquid-permeable sheet member arranged between the absorber 10 and the top sheet 11 in the thickness direction of the auxiliary napkin 1. Examples of the sheet member constituting the intermediate sheet 12 include spunbonded non-woven fabrics, air-laid non-woven fabrics, tissues, and air-through non-woven fabrics. The intermediate sheet 12 does not necessarily have to be provided.

The side seat 13 is a member that constitutes both ends in the width direction on the skin side surface of the auxiliary napkin 1. When the auxiliary napkin 1 is attached, the side seat 13 is likely to come into direct contact with the wearer's skin, so it is desirable that the seat member be as flexible as possible, like the top sheet 11. Examples of the seat member constituting the side seat 13 of the present embodiment include an air-through non-woven fabric and the like.

The back sheet 14 is a liquid-impermeable and breathable sheet member arranged on the non-skin side of the absorber 10 in the thickness direction of the auxiliary napkin 1. By providing the back sheet 14, it is possible to prevent the liquid such as menstrual blood absorbed by the absorber 10 from permeating from the skin side to the non-skin side. Therefore, when the auxiliary napkin 1 is used in an overlapping manner on the skin side of the sanitary napkin, it is possible to prevent menstrual blood or the like absorbed by the auxiliary napkin 1 from penetrating into the sanitary napkin on the non-skin side. Examples of the sheet member constituting the back sheet 14 of the present embodiment include a polyethylene or polypropylene resin film.

Further, on the non-skin side surface of the back sheet 14, an attachment portion 31 for attaching the auxiliary napkin 1 to the skin side surface of the sanitary napkin is provided. In the present embodiment, as shown in FIG. 1, the attachment portion 31 is provided with a pair of strip-shaped regions along the longitudinal direction with the central position CI in the width direction interposed therebetween, and the attachment portion 31 is provided side by side. The non-skin side surface of the auxiliary napkin 1 is detachably fixed to the skin side surface of the sanitary napkin. Details of the configuration and functions of the mounting portion 31 will be described later.

<Basic configuration of sanitary napkin 2>
Subsequently, the sanitary napkin 2 will be described as an example of the sanitary napkin to which the auxiliary napkin 1 is attached. The auxiliary napkin 1 of the present embodiment can be used by being attached to a commercially available sanitary napkin (including a sanitary napkin 2) that satisfies the predetermined conditions described in the present specification.

FIG. 3 is a schematic plan view showing a state in which the sanitary napkin 2 is viewed from the skin side and the non-skin side. FIG. 4 is a schematic cross-sectional view taken along the line BB shown in FIG. In FIG. 3, the sanitary napkin 2 has a longitudinal direction, a width direction, and a thickness direction orthogonal to each other. The longitudinal direction is the direction along the product longitudinal direction of the sanitary napkin 2, and the width direction is the direction along the product lateral direction of the sanitary napkin 2. In the present embodiment, the longitudinal direction of the sanitary napkin 2 (see FIG. 3) and the longitudinal direction of the auxiliary napkin 1 (see FIG. 1) correspond to each other. Therefore, in the following, both are simply referred to as "longitudinal direction", and if necessary, they are separately referred to as "longitudinal direction of sanitary napkin 2". The same applies to the "thickness direction" and the "width direction".

The sanitary napkin 2 absorbs the absorber 20, the top sheet 21, the top sheet 21 arranged on the skin side of the absorber 20, and the second sheet 22 arranged between the absorber 20 and the top sheet 21. On the skin side of the body 20, it has a side flap 23 arranged so as to extend outward in the width direction, and a back sheet 24 arranged on the non-skin side of the absorber 20 and the side flap 23. The materials adjacent to each other in the thickness direction are bonded to each other by an adhesive such as a hot melt adhesive. Further, the sanitary napkin 2 has a napkin main body 2C provided with the absorber 20 and a pair of wing portions 2W extending outward from the central region in the longitudinal direction of the napkin main body 2C in the width direction (FIG. FIG. 3). However, the sanitary napkin 2 does not necessarily have to have a wing portion 2W.

The absorber 20, top sheet 21, second sheet 22, side flap 23, and back sheet 24 of the sanitary napkin 2 are the absorber 10, top sheet 11, intermediate sheet 12, side sheet 13, and back of the auxiliary napkin 1, respectively. Since it has substantially the same function and configuration as the sheet 14, detailed description thereof will be omitted here.

On the non-skin side surface (non-skin side surface of the back sheet 24) in the thickness direction of the napkin body 2C, an appropriate adhesive such as a hot melt adhesive is applied to a plurality of strip-shaped regions along the longitudinal direction. The formed adhesive portion 41 is provided. When the sanitary napkin 2 is used, the adhesive portion 41 is attached to the wearer's underwear or the like, whereby the sanitary napkin 2 is fixed to the underwear or the like.

Similarly, a wing adhesive portion 42 is provided on the non-skin side surface (non-skin side surface of the back sheet 24) in the thickness direction of the wing portion 2W. When the sanitary napkin 2 is attached, the wing portion 2W is bent toward the non-skin side, and the wing adhesive portion 42 is attached to the non-skin side surface at the inseam such as underwear, whereby misalignment of the sanitary napkin 2 is suppressed. To. The shapes, numbers, sizes, etc. of the adhesive portion 41 and the wing adhesive portion 42 are not limited to those shown in FIG.

Further, the sanitary napkin 2 is folded in three in the longitudinal direction at the first fold F1 and the second fold F2 set at predetermined positions in the longitudinal direction in the individually packaged state when the sanitary napkin 2 is distributed on the market as a product. As shown in FIG. 3, the first fold F1 is formed along the width direction on the front side in the longitudinal direction (front side of the wing portion 2W). Similarly, the second fold F2 is formed along the width direction on the rear side in the longitudinal direction (rear side of the wing portion 2W). The sanitary napkin 2 may have folds other than the first fold F1 and the second fold F2 (for example, the third fold).

<Usage of auxiliary napkin 1>
A specific usage mode when the auxiliary napkin 1 is attached to the sanitary napkin 2 and used will be described. FIG. 5 is a schematic plan view showing a state in which the auxiliary napkin 1 is attached to the skin side of the sanitary napkin 2. 6A and 6B are perspective views illustrating attachment / detachment of the auxiliary napkin 1. When actually using the auxiliary napkin 1, the auxiliary napkin 1 is often attached to and detached from the sanitary napkin 2 which is fixed to the wearer's underwear in advance. That is, the auxiliary napkin 1 is attached to and detached from the sanitary napkin 2 deformed into a curved surface according to the body shape of the wearer, but in FIGS. 5 and 6, for convenience of explanation, the sanitary napkin 2 in a flat state is attached. The auxiliary napkin 1 is attached and detached.

When using the auxiliary napkin 1, first, the non-skin side surface of the auxiliary napkin 1 is overlapped with the skin side surface of the sanitary napkin 2 so that the longitudinal direction of the auxiliary napkin 1 and the longitudinal direction of the sanitary napkin 2 are aligned with each other. And place it. Then, the attachment portion 31 provided on the non-skin side surface of the auxiliary napkin 1 is pressed against the top sheet 21 of the sanitary napkin 2 to pressurize from the skin side to the non-skin side to fix both. At this time, it is preferable to adjust the position of the auxiliary napkin 1 so that the central position CL in the longitudinal direction of the auxiliary napkin 1 is substantially the center in the longitudinal direction of the wing portion 2W of the sanitary napkin 2. Since the wing portion 2W of the sanitary napkin 2 is a portion located in the inseam of the wearer in the longitudinal direction, by arranging the auxiliary napkin 1 with reference to the position of the wing portion 2W, the auxiliary napkin at the time of wearing 1 is easy to come into contact with the excretion port of the wearer, and is easy to absorb menstrual blood and the like.

In the present embodiment, the mounting portion 31 is composed of a hook-and-loop fastener having a plurality of locking protrusions (hooks) on the non-skin side surface. Then, the locking protrusions provided on the non-skin side surface of the attachment portion 31 are hooked on the non-woven fabric fibers of the top sheet 21 provided on the skin side surface of the sanitary napkin 2 and bonded to the non-skin side of the auxiliary napkin 1. The side surface is fixed to the skin side surface of the sanitary napkin 2. By doing so, the auxiliary napkin 1 can be easily attached to and detached from the sanitary napkin 2. Further, since the coupling force of the hook-and-loop fastener is unlikely to decrease even if the attachment / detachment operation is repeated, the position of the auxiliary napkin 1 at the time of attachment can be easily adjusted. However, the elements constituting the mounting portion 31 are not limited to the hook-and-loop fastener. For example, the attachment portion 31 may be configured by an adhesive surface or the like using an adhesive.

In the sanitary napkin 2 with the auxiliary napkin 1 attached as shown in FIG. 6A, the sanitary napkin 2 is provided because the liquid such as menstrual blood excreted from the wearer's body is mainly absorbed by the auxiliary napkin 1. Hard to get dirty. Then, after the auxiliary napkin 1 has absorbed a predetermined amount of menstrual blood, the auxiliary napkin 1 is removed from the sanitary napkin 2 and replaced with a new auxiliary napkin 1.

When removing the auxiliary napkin 1 from the sanitary napkin 2, for example, one hand holds the front end of the sanitary napkin 2 in the longitudinal direction, and the other hand grasps the front end of the auxiliary napkin 1 in the longitudinal direction. , The mounting portion 31 is peeled from the top sheet 21 of the sanitary napkin 2 by pulling it to the rear side as shown in FIG. 6B. The auxiliary napkin 1 may be removed by pulling it from one side in the width direction to the other side. After removing the used auxiliary napkin 1, prepare a new auxiliary napkin 1 and attach it to the skin side surface of the sanitary napkin 2 again as shown in FIG. 6A. By doing so, by replacing only the auxiliary napkin 1 a plurality of times, the frequency of replacement of the sanitary napkin 2 itself can be reduced, and the sanitary napkin 2 can be made to last longer.

In the present embodiment, the removal operation of the auxiliary napkin 1 described with reference to FIG. 6B can be performed with only one hand. For example, even if the sanitary napkin 2 is not grasped and supported by one hand, the attachment portion 31 of the auxiliary napkin 1 can be peeled off from the skin side surface of the sanitary napkin 2. That is, when removing the auxiliary napkin 1 attached to the skin side surface of the sanitary napkin 2, the attachment portion 31 of the auxiliary napkin 1 is used for menstruation without peeling the adhesive portion 41 of the sanitary napkin 2 from the wearer's underwear. It can be peeled off from the napkin 2. Hereinafter, the features of the attachment portion 31 of the auxiliary napkin 1 for realizing such an operation will be described.

<About the peel strength of the mounting part 31>
In the present embodiment, the force required to attach the attachment portion 31 of the auxiliary napkin 1 to a predetermined cloth and then peel it off is required to attach the adhesive portion 41 of the sanitary napkin 2 to a predetermined cloth and then peel it off. The peel strength of the mounting portion 31 is adjusted so as to be smaller than the force. That is, the auxiliary napkin 1 can be easily removed from the sanitary napkin 2 by making the peel strength of the attachment portion 31 of the auxiliary napkin 1 weaker than the peel strength of the adhesive portion 41 of the sanitary napkin 2.

FIG. 7 is a diagram illustrating a method of evaluating the peel strength of the attachment portion 31 of the auxiliary napkin 1. The peel strength is evaluated using an airbag type pressurizing machine 70 and a tensile tester (not shown).

As an evaluation procedure, first, a common attachment member S is prepared in order to compare the magnitude of the peel strength between the attachment portion 31 of the auxiliary napkin 1 and the adhesive portion 41 of the sanitary napkin 2. Next, the magnitude of the force applied when the attachment portion 31 of the auxiliary napkin 1 is attached to the attached member S and then peeled off is measured and used as the peel strength of the attachment portion 31. Similarly, the magnitude of the force applied when the adhesive portion 41 of the sanitary napkin 2 is attached to the attached member S and then peeled off is measured and used as the peel strength of the adhesive portion 41. Then, the magnitude relationship between the peel strength of the attachment portion 31 and the peel strength of the adhesive portion 41 is compared.

As the attached member S, a napkin (auxiliary napkin 1) having the same configuration as the auxiliary napkin 1 is used. In the following description, the auxiliary napkin 1 serving as a sample for measuring the peel strength of the mounting portion 31 is referred to as a first auxiliary napkin 1A. Further, the auxiliary napkin 1 used as the attached member S is referred to as a second auxiliary napkin 1B.

When measuring the peel strength of the attachment portion 31 of the auxiliary napkin 1, as shown in FIG. 7, the surface on the side where the attachment portion 31 of the first auxiliary napkin 1A is provided (non-skin side surface in FIG. 2). Place it on a horizontal table with the face facing up so that there are no wrinkles on the surface. The attachment portion 31 of the first auxiliary napkin 1A is in an unused state, and the attachment portion 31 is not touched through the measurement. Next, the second auxiliary napkin 1B is placed on the upper side of the first auxiliary napkin 1A in the thickness direction so as to be overlapped with the side surface (non-skin side surface) on which the mounting portion 31 is provided facing upward. When both are overlapped, the longitudinal direction of the first auxiliary napkin 1A and the longitudinal direction of the second auxiliary napkin 1B are aligned. That is, the entire non-skin side surface of the first auxiliary napkin 1A is arranged so as to overlap the entire skin side surface of the second auxiliary napkin 1B. As a result, the entire area of the attachment portion 31 of the first auxiliary napkin 1A comes into contact with the top sheet 11 of the second auxiliary napkin 1B, and both are lightly engaged (attached).

Next, the airbag 72 is placed on the upper side of the second auxiliary napkin 1B in the thickness direction. At this time, it is preferable to arrange a spacer sheet P such as a release paper between the attachment portion 31 of the second auxiliary napkin 1B and the airbag 72. The spacer sheet P can prevent the attachment portion 31 of the second auxiliary napkin 1B and the airbag 72 from being engaged (attached). The airbag 72 is a rubber bag-shaped member having dimensions of 120 mm × 230 mm, and by supplying compressed air to the inside, it is possible to pressurize a sample by 20 mm to 300 mmHg.

Next, the fixing plate 71 is placed on the upper side of the airbag 72, and the fixing plate 71 is fixed at that position. In this state, compressed air is supplied to the airbag 72, and pressurization is performed at a pressure of 300 mmHg for 1 minute. As a result, a uniform compressive force is applied between the fixing plate 71 (and the airbag 72) and the base with respect to the first auxiliary napkin 1A and the second auxiliary napkin 1B in the thickness direction, and the first auxiliary napkin is applied. The entire area of the attachment portion 31 of 1A (sample) is firmly attached to the top sheet 11 of the second auxiliary napkin 1B (attached member S).

After the mounting portion 31 is mounted on the mounted member S, the fixing plate 71 and the airbag 72 are removed. Then, the cloth tape is attached to the predetermined positions of the first auxiliary napkin 1A and the second auxiliary napkin 1B to form a grip portion when pulled by the tensile tester. After forming the grip portion, the grip portion of the second auxiliary napkin 1B (attached member S) is gripped by the grip on one side of the tensile tester (not shown), and by the grip on the other side of the tensile tester (not shown). Grasp the grip of the first auxiliary napkin 1A (sample). At this time, the gripping interval (distance between one side and the other side) of the tensile tester is 20 mm.

Then, the first auxiliary napkin 1A and the second auxiliary napkin 1B are pulled at a speed of 300 m / min along the longitudinal direction of the first auxiliary napkin 1A, and the entire area of the attachment portion 31 of the first auxiliary napkin 1A is the second auxiliary napkin. The average value of the load (N) applied until peeling from 1B is measured. Such a measurement is performed on a plurality of different (for example, 5) first auxiliary napkins 1A, and the average value thereof is calculated to obtain the peel strength in the longitudinal direction of the mounting portion 31.

It is assumed that the auxiliary napkin 1 of the present embodiment will be distributed on the market in a state where a plurality of auxiliary napkins 1 are packaged in one package. Therefore, a predetermined number (for example, 5) of auxiliary napkins 1 are selected as the sample (sample) to be evaluated from the plurality of auxiliary napkins 1, 1 ... Packaged in the same package, and the above measurement is performed for each sample. Good to do. However, it is not always necessary to select a sample from the same package. For example, a predetermined number (for example, 5 sheets) of auxiliary napkins 1 are randomly selected from the corrugated cardboards containing a plurality of packages. , May be a sample.

Similarly, the average value of the load (N) when the first auxiliary napkin 1A and the second auxiliary napkin 1B are pulled at a speed of 300 m / min along the width direction of the first auxiliary napkin 1A is measured, and the mounting portion 31 Measure the peel strength in the width direction of. Such a measurement is performed on a plurality of different (for example, 5) first auxiliary napkins 1A, and the average value thereof is calculated to obtain the peel strength in the width direction of the mounting portion 31.

FIG. 8 is a table showing measured data on the peel strength of the first auxiliary napkin 1A with respect to the second auxiliary napkin 1B. As the first auxiliary napkin 1A, the peel strength was measured using 10 types of samples S1 to S10 having different structures of the attachment portion 31.

Sample S1 and sample S2 use a commercially available hook-and-loop fastener (hook tape 1) as the mounting portion 31. The hook tape 1 has a plurality of hooks composed of a pillar portion and a bulk portion provided on the base film, the length in the longitudinal direction (MD cap diameter) of the umbrella portion is 240 μm, and the length in the width direction of the umbrella portion. (CD cap diameter) is 300 μm, pillar height (pin height) is 100 μm, base film thickness is 55 μm, CD hook diameter is 150 μm, hook basis weight is 60 g / m2, and hook pin number is 3500 / 25.4 mm square. Is. In the samples S1 and S2, the hook tape 1 was arranged in a range of 100 mm in length with an interval of 30 mm in a width of 5 mm and 11 mm on one side to form a mounting portion 31 (see FIG. 8 for details of the conditions).

Samples S3 to S5 use hook tape 2 (hook-and-loop fastener) different from the hook tape 1 described above as the attachment portion 31. The hook tape 2 has a plurality of hooks composed of a pillar portion and a bulk portion provided on the base film, and has a length (MD cap diameter) of 300 μm in the longitudinal direction of the umbrella portion and a length in the width direction of the umbrella portion. (CD cap diameter) is 410 μm, pillar height (pin height) is 290 μm, base film thickness is 90 μm, CD hook diameter is 200 μm, hook basis weight is 100 g / m2, and hook pin number is 1600 / 25.4 mm square. Is. In the samples S3 to S5, the hook tape 2 was arranged in a range of 100 mm in length with a width of 15 to 22 mm on one side and an interval of 25 mm to form a mounting portion 31 (see FIG. 8 for details of the conditions).

Samples S6 to S10 have an adhesive surface formed as a mounting portion 31 by applying an adhesive such as a hot melt adhesive (HMA) to different regions with different basis weights. The pressure-sensitive adhesive used to form the mounting portion 31 is a block copolymer of SBS (styrene-butadiene-styrene copolymer) and has viscosities of 6000 MPa · s at 140 ° C, 2800 MPa · s at 160 ° C, and 180 ° C. It is a pressure-sensitive adhesive having physical properties of 1450 MPa · s and a softening point of 85 ° C. In the samples S6 to S10, the adhesive was applied to regions having different lengths and widths while changing the basis weight to form a mounting portion 31 (see FIG. 8 for details of the conditions).

Note that all the structures other than the mounting portion 31 are common in the samples S1 to S10. Therefore, the structure of the skin side surface (top sheet 11) of the second auxiliary napkin 1B to which the attachment portion 31 of the first auxiliary napkin 1A is attached is also common.

The top sheet 11 of the second auxiliary napkin 1B is an air-through non-woven fabric having a thickness of 0.4 mm. Further, as a result of conducting a tensile test, the tensile strength when extended by 5% in the longitudinal direction (MD direction) is 4.0 N / mm2, and the maximum tensile strength is 17.2 N / mm2, which is the width direction (CD direction). The tensile strength when extended by 5% is 0.3 N / mm2, and the maximum tensile strength is 4.1 N / mm2. Further, as a result of conducting a tear test, the maximum tear strength in the longitudinal direction (MD direction) is 3.3 N / mm2, and the maximum tear strength in the width direction (CD direction) is 2.7 N / mm2. The absorber used was made of softwood pulp and was crushed and laminated with a basis weight of 200 g / m2 and a thickness of 3 mm. As the back film, a non-breathable film having a basis weight of 25 g / m2 was used.

As a result of the measurement, the peel strength of the first auxiliary napkin 1A (samples S1 to S10) in the longitudinal direction was 0.61N (sample S1) to 2.20N (sample S8), and the peel strength in the width direction was 1. It was 33N (sample S2) to 7.71N (sample S6).

FIG. 9 is a diagram illustrating a method for evaluating the peel strength of the adhesive portion 41 of the sanitary napkin 2 with respect to the second auxiliary napkin 1B. The measurement of the peel strength of the adhesive portion 41 of the sanitary napkin 2 can be performed in substantially the same manner as the measurement of the peel strength of the attachment portion 31 of the first auxiliary napkin 1A. When measuring the peel strength of the adhesive portion 41 of the sanitary napkin 2, first, a sample obtained by cutting the sanitary napkin 2 to a predetermined length in the longitudinal direction is prepared. As shown in FIG. 5, the length of the sanitary napkin 2 in the longitudinal direction is longer than the length of the second auxiliary napkin 1B (auxiliary napkin 1) in the longitudinal direction. This is to make a measurement. In the present embodiment, the sanitary napkin 2 is cut at a position 90 mm from one end in the longitudinal direction of the sanitary napkin 2. Also, the wing portion 2W is cut. When the sanitary napkin 2 to be evaluated has a so-called three-dimensional gather or a portion corresponding to the three-dimensional gather, the measurement is performed after the elastic member of the three-dimensional gather is cut to make the stress not appear. Do.

Then, the surface of the sanitary napkin 2 (sample) cut to a predetermined length is turned upward with the side surface (non-skin side surface in FIG. 4) on which the adhesive portion 41 is provided as shown in FIG. 9 facing upward. Place it on a horizontal table so that it does not wrinkle. The adhesive portion 41 of the sanitary napkin 2 is in an unused state, and the adhesive portion 41 is not touched through the measurement. Next, the second auxiliary napkin 1B is placed on the upper side of the sanitary napkin 2 in the thickness direction so as to be overlapped with the side surface (non-skin side surface) on which the attachment portion 31 is provided facing upward. When stacking the two, make sure that the longitudinal direction of the sanitary napkin 2 and the longitudinal direction of the second auxiliary napkin 1B are aligned. As a result, the entire width direction and the predetermined region in the longitudinal direction of the adhesive portion 41 of the sanitary napkin 2 are in contact with the top sheet 11 of the second auxiliary napkin 1B, and both are lightly engaged (attached). Become.

Then, the airbag 72 is placed on the upper side of the second auxiliary napkin 1B in the thickness direction, and the fixing plate 71 is placed on the upper side of the airbag 72 and fixed. In this state, compressed air is supplied to the airbag 72, and pressurization is performed at a pressure of 300 mmHg for 1 minute. As a result, a uniform compressive force is applied between the fixing plate 71 (and the airbag 72) and the base with respect to the sanitary napkin 2 and the second auxiliary napkin 1B in the thickness direction, and the sanitary napkin 2 (and the sanitary napkin 2 (and the airbag 72) The adhesive portion 41 of the sample) is firmly attached to the top sheet 11 of the second auxiliary napkin 1B (attached member S).

After the adhesive portion 41 is attached to the attached member S, the fixing plate 71 and the airbag 72 are removed, a cloth tape is attached to a predetermined position of the sanitary napkin 2 and the second auxiliary napkin 1B, and the cloth tape is attached and pulled by a tensile tester. Form a grip. Then, the grip portion of the second auxiliary napkin 1B (attached member S) is gripped by the grip on one side of the tensile tester (not shown), and the sanitary napkin 2 (not shown) is gripped on the other side of the tensile tester (not shown). Grasp the grip of the sample). At this time, the gripping interval (distance between one side and the other side) of the tension tester is 20 mm.

Then, the sanitary napkin 2 and the second auxiliary napkin 1B are pulled at a speed of 300 m / min along the longitudinal direction of the sanitary napkin 2, and the length of the adhesive portion 41 of the sanitary napkin 2 is 50 mm in the longitudinal direction. The average value of the load (N) applied until the region to be held is peeled off from the second auxiliary napkin 1B is measured. Such a measurement is performed on a plurality of different (for example, 5) sanitary napkins 2, and the average load thereof is calculated to obtain the peel strength in the longitudinal direction of the adhesive portion 41.

Similarly, the average value of the load (N) when the sanitary napkin 2 and the second auxiliary napkin 1B are pulled at a speed of 300 m / min along the width direction of the sanitary napkin 2 is measured. Such a measurement is performed on a plurality of different (for example, 5) sanitary napkins 2, and the average load thereof is calculated to obtain the peel strength in the width direction of the adhesive portion 41.

FIG. 10 is a table showing measured data on the peel strength of the sanitary napkin 2 with respect to the second auxiliary napkin 1B. As the sanitary napkin 2, 10 types of commercially available sanitary napkins X1 to X10, which will be described later, were used as samples for measurement. As a result, the peel strength of the sanitary napkins 2 (samples X1 to X10) in the longitudinal direction was 3.11N (sample X2) to 4.31N (sample X6), and the peel strength in the width direction was 8.84N (sample X6). It was sample X6) to 19.39N (sample X5).

From the results of FIGS. 8 and 10, the peel strength (0.61N to 2.20N) in the longitudinal direction of the attachment portion 31 of the first auxiliary napkin 1A is higher in the longitudinal direction of the adhesive portion 41 of the sanitary napkin 2. It was confirmed that the strength was lower than the strength (3.11N to 4.31N). As described above, in the auxiliary napkin 1 of the present embodiment, the peel strength of the attachment portion 31 is adjusted so that the peel strength of the attachment portion 31 in the longitudinal direction is smaller than the peel strength of the adhesive portion 41 in the longitudinal direction. Has been done. In other words, after attaching the entire area of the attachment portion 31 of the first auxiliary napkin 1A in an unused state to the skin side surface of the second auxiliary napkin 1B, the second auxiliary napkin 1B to the first auxiliary napkin 1A are attached along the longitudinal direction. The average value of the magnitude of the force applied when peeling off is 50 mm in the entire width direction and 50 mm in the longitudinal direction of the adhesive portion 41 of the unused sanitary napkin 2, and the skin side surface of the second auxiliary napkin 1B. After being attached to the sanitary napkin 2, it becomes smaller than the average value of the magnitude of the force applied when peeling the sanitary napkin 2 from the second auxiliary napkin 1B along the longitudinal direction of the sanitary napkin 2.

Therefore, after attaching the auxiliary napkin 1 to the skin side surface of the sanitary napkin 2, only the auxiliary napkin 1 can be easily peeled off along the longitudinal direction. That is, the attachment portion 31 of the auxiliary napkin 1 can be peeled off from the sanitary napkin 2 without peeling the adhesive portion 41 of the sanitary napkin 2 from the underwear of the user (wearer). This makes it easy to attach / detach the auxiliary napkin 1 to / from the sanitary napkin 2.

Similarly, from the results of FIGS. 8 and 10, the peel strength (1.33N to 7.71N) in the width direction of the attachment portion 31 of the first auxiliary napkin 1A is the width of the adhesive portion 41 of the sanitary napkin 2. It was confirmed that the peel strength in the direction was smaller than the peel strength (8.84N to 19.39N). As described above, in the auxiliary napkin 1 of the present embodiment, the peel strength of the attachment portion 31 is adjusted so that the peel strength of the attachment portion 31 in the width direction is smaller than the peel strength of the adhesive portion 41 in the width direction. Has been done. In other words, after attaching the entire area of the attachment portion 31 of the first auxiliary napkin 1A in an unused state to the skin side surface of the second auxiliary napkin 1B, the second auxiliary napkin 1B to the first auxiliary napkin 1A are attached along the width direction. The average value of the magnitude of the force applied when peeling off is 50 mm in the entire width direction and 50 mm in the longitudinal direction of the adhesive portion 41 of the unused sanitary napkin 2, and the skin side surface of the second auxiliary napkin 1B. After being attached to the sanitary napkin 2, it becomes smaller than the average value of the magnitude of the force applied when peeling the sanitary napkin 2 from the second auxiliary napkin 1B along the width direction of the sanitary napkin 2. Therefore, the auxiliary napkin 1 can be easily attached to and detached from the sanitary napkin 2.

Further, in the present embodiment, the length of the auxiliary napkin 1 in the longitudinal direction is shorter than the length of the sanitary napkin 2 in the longitudinal direction. Therefore, when the auxiliary napkin 1 is attached to the sanitary napkin 2 as shown in FIG. 5, the absorber 20 of the sanitary napkin 2 is arranged outside the auxiliary napkin 1 in the longitudinal direction. Therefore, even if a liquid leak occurs outside the auxiliary napkin 1 due to reasons such as the auxiliary napkin 1 not being able to absorb menstrual blood or the like, the leaked liquid is absorbed by the absorber 20 of the sanitary napkin 2. Therefore, it is difficult to stain the wearer's underwear. Further, since the sanitary napkin 2 to which the auxiliary napkin 1 is attached is larger (longer in the longitudinal direction), it becomes easier to attach / detach the auxiliary napkin 1 as described with reference to FIG. For example, when attaching the auxiliary napkin 1, it is possible to prevent the auxiliary napkin 1 from protruding from the sanitary napkin 2 without strictly adjusting the position in the longitudinal direction. Further, when removing the auxiliary napkin 1, since it is difficult for the auxiliary napkin 1 that has absorbed menstrual blood to come into contact with the wearer's underwear, the user can easily perform the removal work without paying excessive attention. In this way, it is possible to facilitate the replacement work of the auxiliary napkin 1.

Further, the length of the auxiliary napkin 1 in the longitudinal direction is longer than the distance between the first fold F1 and the second fold F2, which are folds when the sanitary napkin 2 is packed (see FIG. 5). With such a configuration, when attaching the auxiliary napkin 1 to the sanitary napkin 2, the user can adjust the position of the auxiliary napkin 1 with reference to the creases F1 and F2. Specifically, the front end of the auxiliary napkin 1 in the longitudinal direction is on the front side of the first fold F1, and the rear end of the auxiliary napkin 1 in the longitudinal direction is on the rear side of the second fold F2. That is, the auxiliary napkin 1 is arranged so as to straddle the first fold F1 and the second fold F2 in the longitudinal direction. As a result, the auxiliary napkin 1 can be arranged at an appropriate position on the skin side surface of the sanitary napkin 2. Therefore, the work of attaching the auxiliary napkin 1 becomes easier.

It is also desirable that the color of the auxiliary napkin 1 and the color of the sanitary napkin 2 are different. At least, it is desirable that the color of the outer edge portion of the auxiliary napkin 1 (that is, the contour portion of the auxiliary napkin 1) and the color of the skin side surface of the sanitary napkin 2 are different. When the auxiliary napkin 1 is attached to the sanitary napkin 2 as shown in FIG. 5, if the color of the outer edge of the auxiliary napkin 1 and the color of the skin side surface of the sanitary napkin 2 are different, the contour of the auxiliary napkin 1 is It becomes easier to see. Therefore, the user can easily recognize whether or not the mounting position of the auxiliary napkin 1 is appropriate for the sanitary napkin 2. Further, when removing the auxiliary napkin 1, it becomes easy to recognize the place where the auxiliary napkin 1 is gripped. By this. The work of attaching the auxiliary napkin 1 becomes easier. In addition, "different" means a state in which the hues of the Ostwald color system are deviated by three or more hues.

Furthermore, it is desirable that the color of the absorber 10 of the auxiliary napkin 1 is a reddish color. Specifically, it is desirable that the color is included in the range of 4 to 9 (the range of "orange" or "red") in the hue number of the Ostwald hue circle. Since the absorber 10 of the auxiliary napkin 1 is mainly intended to absorb menstrual blood, the effect of concealing the absorbed menstrual blood can be obtained by setting the color of the absorber 10 to be red. As a result, when replacing the used auxiliary napkin 1, the user can dispose of the used auxiliary napkin 1 without worrying about the eyes of others.

Further, it is desirable that the attachment portion 31 of the auxiliary napkin 1 is removable from the sanitary napkin 2. In other words, it is desirable that the attachment portion 31 can maintain a sufficient bonding force even when the auxiliary napkin 1 is attached and detached to the skin side surface of the sanitary napkin 2 a plurality of times. With such a configuration, the position of the auxiliary napkin 1 can be easily adjusted with respect to the sanitary napkin 2. For example, when the auxiliary napkin 1 is attached to the skin side surface of the sanitary napkin 2 and then the attachment position is to be changed, even if the auxiliary napkin 1 is once removed from the sanitary napkin 2, the position is changed, and then the auxiliary napkin 1 is attached again. , The auxiliary napkin 1 can be firmly fixed. This makes it easier to attach the auxiliary napkin 1.

In the present embodiment, since the attachment portion 31 of the auxiliary napkin 1 is composed of a hook-and-loop fastener, it is easier to attach / detach to / from the sanitary napkin 2. If the attachment portion 31 is composed of an adhesive surface using an adhesive or the like, when the attachment portion 31 is attached to the sanitary napkin 2 and peeled off, the non-woven fabric fiber is attached to the attachment portion 31 (adhesive surface). Etc. will adhere and the bonding force will decrease. In this case, it is difficult to reattach the attachment portion 31 to the sanitary napkin 2. On the other hand, if the mounting portion 31 is a hook-and-loop fastener, the engaging force (bonding force) of the mounting portion 31 even after the mounting portion 31 is engaged with the skin side surface of the sanitary napkin 2 and then peeled off. Is hard to fall. Therefore, the attachment portion 31 can be repeatedly attached to and detached from the sanitary napkin 2. Thereby, the attachment position of the auxiliary napkin 1 with respect to the sanitary napkin 2 can be easily adjusted.

FIG. 11 is a table showing the results of verifying the change in peel strength when the attachment portion 31 of the auxiliary napkin 1 is repeatedly attached and detached. The repeated peel strength was verified as follows. First, as the auxiliary napkin 1 for which the peeling strength is repeatedly measured, the sample S2 (hook tape 1) and the sample S6 (adhesive surface) described with reference to FIG. 8 are prepared. Then, for each of the samples S2 and S6, the first peel strength measurement is performed by the method described with reference to FIG. 7. Next, using the samples S2 and S6 used for the first measurement of the peel strength, the peel strength is measured again by the method described with reference to FIG. 7 (second measurement). This operation was performed a plurality of times (three times in this embodiment), and it was verified how the peel strength changes when the attachment / detachment portion 31 is repeatedly attached / detached.

As shown in FIG. 11, when the peel strength measurement is repeated three times using the sample S2 in which the mounting portion 31 is composed of the hook tape (hook-and-loop fastener), the peel strength is high in both the longitudinal direction and the width direction. No decrease was seen. On the other hand, it is clear that when the peel strength measurement is repeated three times using the sample S6 in which the mounting portion 31 is composed of the adhesive surface, the peel strength gradually decreases in both the longitudinal direction and the width direction. became. From the results of FIG. 11, it can be confirmed that by forming the attachment portion 31 of the auxiliary napkin 1 with a hook tape (hook-and-loop fastener), the attachment portion 31 can be repeatedly attached to and detached from the sanitary napkin 2. It was. Since the auxiliary napkin 1 is a consumable item, it is sufficient that the attachment portion 31 can be attached / detached several times. Therefore, the peeling strength is reduced in the attachment / detachment operation of about three times as in sample 2 of FIG. If not, there is no problem in practical use.

Further, as shown in FIG. 1, in the longitudinal direction, the mounting portion 31 is provided at a predetermined distance from the outer edge of the auxiliary napkin 1. In other words, in the longitudinal direction, a predetermined gap (interval) is provided between one end (for example, the front side) of the mounting portion 31 and one side (for example, the front side) end of the auxiliary napkin 1. In such a gap portion, the non-skin side surface of the auxiliary napkin 1 and the skin side surface of the sanitary napkin 2 are not joined because the bonding force by the attachment portion 31 does not act. That is, even when the auxiliary napkin 1 is attached to the sanitary napkin 2, the non-skin side surface of the auxiliary napkin 1 floats in the thickness direction from the skin side surface of the sanitary napkin 2 in the gap portion. .. Therefore, when the auxiliary napkin 1 is removed from the sanitary napkin 2, the gap portion becomes the "grip portion" of the auxiliary napkin 1, and the user can easily grasp the grip portion and pull the auxiliary napkin 1. As a result, the auxiliary napkin 1 can be easily attached and detached.

However, in the longitudinal direction, there may not be a gap between the mounting portion 31 and the outer edge of the auxiliary napkin 1. With such a configuration, the engaging force of the attachment portion 31 becomes larger, so that when the auxiliary napkin 1 is attached to the skin side surface of the sanitary napkin 2, it becomes easier to fix the auxiliary napkin 1 more firmly. Therefore, even when the user walks or exercises while wearing the auxiliary napkin 1 and the sanitary napkin 2, it is possible to prevent the auxiliary napkin 1 from being displaced.

Further, in the auxiliary napkin 1, as shown in FIG. 1, a pair of attachment portions 31, 31 are provided on both outer sides of the central position CI in the width direction. That is, the mounting portion 31 is not provided at the central portion in the width direction. Therefore, in the auxiliary napkin 1 of the present embodiment, the rigidity at the central portion in the width direction is lower than the rigidity at both side portions (the portions where the attachment portions 31 are provided).

When the user (wearer) wears the auxiliary napkin 1, the auxiliary napkin 1 usually undergoes three-dimensional deformation according to the unevenness of the wearer's body shape. In the auxiliary napkin 1 of the present embodiment, since the rigidity at the central portion in the width direction is lower than the rigidity at the central portion in the width direction as described above, the auxiliary napkin 1 is moved in the width direction along the central position CI in the width direction. It is prone to bending and deformation. Specifically, when the auxiliary napkin 1 is attached, the auxiliary napkin 1 is easily deformed into a substantially mountain-shaped shape in which the central position CI in the width direction is convex toward the skin in the thickness direction. In this way, the central portion in the width direction is convexly deformed toward the skin side, so that the auxiliary napkin 1 easily comes into contact with the wearer's vagina or the like, the fit at the time of wearing is improved, and excrement fluid such as menstrual blood is discharged. It becomes easier to absorb.

The auxiliary napkin 1 may be bent in the width direction in advance at the center position CI in the width direction to give a crease. That is, the auxiliary napkin 1 may have a bending guide line extending in the longitudinal direction along the central position CI in the width direction. If such a bending guide line (folding habit) is provided, it is possible to make it easier for the convex deformation when the auxiliary napkin 1 is attached as described above to occur more naturally. Further, by packaging the auxiliary napkin 1 in a state of being folded in half in the width direction by the bending guide wire, the individual package of the auxiliary napkin 1 can be compactly formed. In this way, the user can easily carry the auxiliary napkin 1 in a bag or the like, and thus can easily perform work such as exchanging only the auxiliary napkin 1 in the restroom on the go.

Further, the auxiliary napkin 1 has a liquid-impermeable back sheet 14 on the non-skin side of the absorber 10 in the thickness direction. Therefore, even when the absorber 10 absorbs menstrual blood or the like, the back sheet 14 restricts the movement of menstrual blood from the skin side to the non-skin side in the thickness direction. As a result, when the auxiliary napkin 1 is used on the skin side of the sanitary napkin 2, the menstrual blood absorbed by the absorber 10 of the auxiliary napkin 1 can move to the absorber 20 of the sanitary napkin 2. It is suppressed. Therefore, the absorber 20 of the sanitary napkin 2 is less likely to get dirty, and the sanitary napkin 2 can be made to last longer.

<About the target sanitary napkin 2>
Here, the sanitary napkin 2 to which the auxiliary napkin 1 of the present embodiment is attached will be described. The auxiliary napkin 1 of the present embodiment can be used for a sanitary napkin 2 provided with an adhesive portion 41 having a peeling strength of a predetermined size. Specifically, of the unused adhesive portion 41, the entire width direction and 50 mm region in the longitudinal direction are attached to "cotton" (Kanakin No. 3), which is a white cloth attached for testing in accordance with JIS L 0803. Then, the average value of the magnitude of the force applied when peeling the sanitary napkin 2 from the cotton of the white cloth attached to the test along the longitudinal direction of the sanitary napkin 2 is 2.87N or more and 13.12N or less. It can be used for sanitary napkins 2.

FIG. 12 is a diagram illustrating a method for evaluating the peel strength of the adhesive portion 41 of the sanitary napkin 2. FIG. 13 is a table showing the results of measuring the peel strength of the adhesive portion 41 for a plurality of types of sanitary napkins 2.

The peel strength of the adhesive portion 41 of the sanitary napkin 2 can be measured in substantially the same manner as the peel strength measuring method described with reference to FIG. First, a plurality of types of commercially available sanitary napkins are prepared, and a sample is prepared by cutting each of them into a predetermined length (for example, 90 mm) in the longitudinal direction. In this embodiment, 10 types of samples X1 to X10 having different types and sizes (lengths in the longitudinal direction) were prepared as sanitary napkins 2 intended for use, and the peel strength was measured for each of them. .. Hereinafter, a case where the sample X1 is measured will be described as an example.

The sample X1 of the sanitary napkin 2 cut to a predetermined length is placed on a horizontal table so that the surface on the side where the adhesive portion 41 is provided faces upward and wrinkles do not occur on the surface. The adhesive portion 41 of the sample X1 is in an unused state, and the adhesive portion 41 is not touched through the measurement.

Next, the attached member S is placed on top of the sample X1 in the thickness direction. As the member S to be attached, "cotton" (also called "Kanakin No. 3") among the white cloths attached for testing conforming to JIS L0803 is used. Since the details of Kanakin No. 3 are known, the description thereof is omitted here.

Then, the airbag 72 is placed on the upper side of the attached member S (Kanakin No. 3) in the thickness direction, and the fixing plate 71 is placed on the airbag 72 and fixed. In this state, compressed air is supplied to the airbag 72, and pressurization is performed at a pressure of 300 mmHg for 1 minute. As a result, a uniform compressive force is applied between the fixing plate 71 (and the airbag 72) and the base with respect to the sample X1 and the attached member S in the thickness direction, and the adhesive portion 41 of the sample X1 is covered. It is firmly attached to the mounting member S.

After the adhesive portion 41 is attached to the attached member S, the fixing plate 71 and the airbag 72 are removed, the cloth tape is attached to the predetermined positions of the sample X1 and the attached member S, and the grip portion when pulled by the tensile tester is used. Form. Then, the grip portion of the attached member S is gripped by the grip on one side of the tensile tester (not shown), and the grip portion of the sample X1 is gripped by the grip on the other side of the tensile tester (not shown). At this time, the gripping interval (distance between one side and the other side) of the tension tester is 20 mm.

Then, both are pulled at a speed of 300 m / min along the longitudinal direction of the sample X1 (sanitary napkin 2), and a region having a length of 50 mm in the longitudinal direction of the adhesive portion 41 of the sample X1 is formed from the attached member S. The average value of the load (N) applied until peeling is measured. The same measurement is performed a plurality of times (for example, 5 times), and the average load thereof is calculated to obtain the peel strength in the longitudinal direction of the adhesive portion 41.

When the peel strength of the adhesive portion 41 was measured for each of the samples X1 to X10 in this way, the data shown in FIG. 13 was obtained. In FIG. 13, the length (mm) represents the length (size of the napkin) in the longitudinal direction of each sanitary napkin 2 before cutting, and the average load (N) is each obtained by the above measurement. It shows the peeling strength of the sanitary napkin 2 of. As a result, the maximum value of the peel strength of the adhesive portion 41 was 13.12N (sample X6), and the minimum value was 2.87N (sample X3).

For each of the sanitary napkins 2 corresponding to the samples X1 to X10, the peel strength of the adhesive portion 41 described with reference to FIGS. 7 to 10 was compared with the peel strength of the attachment portion 31 of the auxiliary napkin 1. In either case, the peeling strength of the mounting portion 31 (auxiliary napkin 1) is adjusted so that the peeling strength of the mounting portion 31 is weaker than the peeling strength of the adhesive portion 41. As a result, when the auxiliary napkin 1 is attached to the sanitary napkin 2 having at least the peel strength of the adhesive portion 41 of 2.87 N or more and 13.12 N or less, the peel strength of the adhesive portion 41 described above is used. And the peeling strength of the mounting portion 31 can be satisfied. That is, it is possible to realize an auxiliary napkin 1 that is easily attached to and detached from the sanitary napkin 2.

=== Second embodiment ===
<Second usage of auxiliary napkin 1>
A second usage mode when the auxiliary napkin 1 is attached to the sanitary napkin 2 and used will be described. 14A to 14C are perspective views illustrating attachment / detachment of the auxiliary napkin 1. When actually using the auxiliary napkin 1, the auxiliary napkin 1 is often attached to and detached from the sanitary napkin 2 which is fixed to the wearer's underwear in advance. That is, the auxiliary napkin 1 is attached to and detached from the sanitary napkin 2 deformed into a curved surface according to the body shape of the wearer. However, for convenience of explanation in FIG. 14, the auxiliary napkin is attached to the sanitary napkin 2 in a flat state. 1 is to be attached and detached.

When using the auxiliary napkin 1, first, the non-skin side surface of the auxiliary napkin 1 is overlapped with the skin side surface of the sanitary napkin 2 so that the longitudinal direction of the auxiliary napkin 1 and the longitudinal direction of the sanitary napkin 2 are aligned with each other. And place it. Then, the attachment portion 31 provided on the non-skin side surface of the auxiliary napkin 1 is pressed against the top sheet 21 of the sanitary napkin 2 to pressurize from the skin side to the non-skin side to fix both. At this time, it is preferable to adjust the position of the auxiliary napkin 1 so that the central position CL in the longitudinal direction of the auxiliary napkin 1 is substantially the center in the longitudinal direction of the wing portion 2W of the sanitary napkin 2. Since the wing portion 2W of the sanitary napkin 2 is a portion located in the inseam of the wearer in the longitudinal direction, by arranging the auxiliary napkin 1 with reference to the position of the wing portion 2W, the auxiliary napkin at the time of wearing 1 is easy to come into contact with the excretion port of the wearer, and is easy to absorb menstrual blood and the like.

In the second embodiment, the mounting portion 31 is adhered to an adhesive surface formed by applying an adhesive to a predetermined area, or a hook-and-loop fastener having a plurality of locking protrusions (hooks) on a non-skin side surface. It is composed of a combination of faces. Of these, when the mounting portion 31 includes a hook-and-loop fastener, the locking protrusion provided on the non-skin side surface is hooked on the non-woven fabric fiber of the top sheet 21 provided on the skin side surface of the sanitary napkin 2. By binding, the non-skin side surface of the auxiliary napkin 1 is fixed to the skin side surface of the sanitary napkin 2. By doing so, the auxiliary napkin 1 can be easily attached to and detached from the sanitary napkin 2. Further, since the coupling force of the hook-and-loop fastener is unlikely to decrease even if the attachment / detachment operation is repeated, the position of the auxiliary napkin 1 at the time of attachment can be easily adjusted.

In the sanitary napkin 2 with the auxiliary napkin 1 attached as shown in FIG. 14A, the sanitary napkin 2 is provided because the liquid such as menstrual blood excreted from the wearer's body is mainly absorbed by the auxiliary napkin 1. Hard to get dirty. Then, after the auxiliary napkin 1 has absorbed a predetermined amount of menstrual blood, the auxiliary napkin 1 is removed from the sanitary napkin 2 and replaced with a new auxiliary napkin 1.

When removing the auxiliary napkin 1 from the sanitary napkin 2, for example, one hand holds the front end of the sanitary napkin 2 in the longitudinal direction, and the other hand grasps the front end of the auxiliary napkin 1 in the longitudinal direction. , The mounting portion 31 is peeled from the top sheet 21 of the sanitary napkin 2 by pulling it to the rear side as shown in FIG. 14B. The auxiliary napkin 1 may be removed by pulling it from one side in the width direction to the other side. After removing the used auxiliary napkin 1, prepare a new auxiliary napkin 1 and attach it to the skin side surface of the sanitary napkin 2 again as shown in FIG. 14A.

Further, in the second embodiment, when it is desired to replace the sanitary napkin 2 together with the auxiliary napkin 1, by grasping only the auxiliary napkin 1 and pulling it in the longitudinal direction (width direction) without pressing the sanitary napkin 2. As shown in FIG. 14C, the auxiliary napkin 1 and the sanitary napkin 2 can be peeled off at the same time. That is, it is possible to peel off the adhesive portion 41 of the sanitary napkin 2 from the underwear without peeling off the attachment portion 31 of the auxiliary napkin 1 from the top sheet 21 of the sanitary napkin 2. Hereinafter, the features of the attachment portion 31 of the auxiliary napkin 1 for realizing such an operation will be described.

<About the peel strength of the mounting part 31>
In the second embodiment, the force required for attaching the attachment portion 31 of the auxiliary napkin 1 to a predetermined cloth and then peeling it off is when the adhesive portion 41 of the sanitary napkin 2 is attached to a predetermined cloth and then peeled off. The peel strength of the mounting portion 31 is adjusted so that the force exceeds the required force. That is, by setting the peel strength of the attachment portion 31 of the auxiliary napkin 1 to be equal to or higher than the peel strength of the adhesive portion 41 of the sanitary napkin 2, it is possible to easily replace the sanitary napkin 2 and the auxiliary napkin 1. There is.

The evaluation of the peel strength is performed using an airbag type pressurizing machine 70 and a tensile tester (not shown) in the same manner as described with reference to FIG. 7 of the first embodiment.

As an evaluation procedure, first, a common attachment member S is prepared in order to compare the magnitude of the peel strength between the attachment portion 31 of the auxiliary napkin 1 and the adhesive portion 41 of the sanitary napkin 2. Next, the magnitude of the force applied when the attachment portion 31 of the auxiliary napkin 1 is attached to the attached member S and then peeled off is measured and used as the peel strength of the attachment portion 31. Similarly, the magnitude of the force applied when the adhesive portion 41 of the sanitary napkin 2 is attached to the attached member S and then peeled off is measured and used as the peel strength of the adhesive portion 41. Then, the magnitude relationship between the peel strength of the attachment portion 31 and the peel strength of the adhesive portion 41 is compared.

As the attached member S, a napkin (auxiliary napkin 1) having the same configuration as the auxiliary napkin 1 is used. In the following description, the auxiliary napkin 1 serving as a sample for measuring the peel strength of the mounting portion 31 is referred to as a first auxiliary napkin 1A. Further, the auxiliary napkin 1 used as the attached member S is referred to as a second auxiliary napkin 1B.

When measuring the peel strength of the attachment portion 31 of the auxiliary napkin 1, as shown in FIG. 7, the surface on the side where the attachment portion 31 of the first auxiliary napkin 1A is provided (non-skin side surface in FIG. 2). Place it on a horizontal table with the face facing up so that there are no wrinkles on the surface. The attachment portion 31 of the first auxiliary napkin 1A is in an unused state, and the attachment portion 31 is not touched through the measurement. Next, the second auxiliary napkin 1B is placed on the upper side of the first auxiliary napkin 1A in the thickness direction so as to be overlapped with the side surface (non-skin side surface) on which the mounting portion 31 is provided facing upward. When both are overlapped, the longitudinal direction of the first auxiliary napkin 1A and the longitudinal direction of the second auxiliary napkin 1B are aligned. That is, the entire non-skin side surface of the first auxiliary napkin 1A is arranged so as to overlap the entire skin side surface of the second auxiliary napkin 1B. As a result, the entire area of the attachment portion 31 of the first auxiliary napkin 1A comes into contact with the top sheet 11 of the second auxiliary napkin 1B, and both are lightly engaged (attached).

Next, the airbag 72 is placed on the upper side of the second auxiliary napkin 1B in the thickness direction. At this time, it is preferable to arrange a spacer sheet P such as a release paper between the attachment portion 31 of the second auxiliary napkin 1B and the airbag 72. The spacer sheet P can prevent the attachment portion 31 of the second auxiliary napkin 1B and the airbag 72 from being engaged (attached). The airbag 72 is a rubber bag-shaped member having dimensions of 120 mm × 230 mm, and by supplying compressed air to the inside, it is possible to pressurize a sample by 20 mm to 300 mmHg.

Next, the fixing plate 71 is placed on the upper side of the airbag 72, and the fixing plate 71 is fixed at that position. In this state, compressed air is supplied to the airbag 72, and pressurization is performed at a pressure of 300 mmHg for 1 minute. As a result, a uniform compressive force is applied between the fixing plate 71 (and the airbag 72) and the base with respect to the first auxiliary napkin 1A and the second auxiliary napkin 1B in the thickness direction, and the first auxiliary napkin is applied. The entire area of the attachment portion 31 of 1A (sample) is firmly attached to the top sheet 11 of the second auxiliary napkin 1B (attached member S).

After the mounting portion 31 is mounted on the mounted member S, the fixing plate 71 and the airbag 72 are removed. Then, the cloth tape is attached to the predetermined positions of the first auxiliary napkin 1A and the second auxiliary napkin 1B to form a grip portion when pulled by the tensile tester. After forming the grip portion, the grip portion of the second auxiliary napkin 1B (attached member S) is gripped by the grip on one side of the tensile tester (not shown), and by the grip on the other side of the tensile tester (not shown). Grasp the grip of the first auxiliary napkin 1A (sample). At this time, the gripping interval (distance between one side and the other side) of the tensile tester is 20 mm.

Then, the first auxiliary napkin 1A and the second auxiliary napkin 1B are pulled at a speed of 300 m / min along the longitudinal direction of the first auxiliary napkin 1A, and the entire area of the attachment portion 31 of the first auxiliary napkin 1A is the second auxiliary napkin. The average value of the load (N) applied until peeling from 1B is measured. Such a measurement is performed on a plurality of different (for example, 5) first auxiliary napkins 1A, and the average value thereof is calculated to obtain the peel strength in the longitudinal direction of the mounting portion 31.

It is assumed that the auxiliary napkin 1 of the second embodiment will be distributed on the market in a state where a plurality of auxiliary napkins 1 are packaged in one package. Therefore, a predetermined number (for example, 5) of auxiliary napkins 1 are selected as the sample (sample) to be evaluated from the plurality of auxiliary napkins 1, 1 ... Packaged in the same package, and the above measurement is performed for each sample. Good to do. However, it is not always necessary to select a sample from the same package. For example, a predetermined number (for example, 5 sheets) of auxiliary napkins 1 are randomly selected from the corrugated cardboards containing a plurality of packages. , May be a sample.

Similarly, the average value of the load (N) when the first auxiliary napkin 1A and the second auxiliary napkin 1B are pulled at a speed of 300 m / min along the width direction of the first auxiliary napkin 1A is measured, and the mounting portion 31 Measure the peel strength in the width direction of. Such a measurement is performed on a plurality of different (for example, 5) first auxiliary napkins 1A, and the average value thereof is calculated to obtain the peel strength in the width direction of the mounting portion 31.

FIG. 15 is a table showing measured data on the peel strength of the first auxiliary napkin 1A with respect to the second auxiliary napkin 1B. As the first auxiliary napkin 1A, the peel strength was measured using 10 types of samples S11 to S20 having different structures of the attachment portion 31.

Samples S11 to S15 use a commercially available hook-and-loop fastener (hook tape) and an adhesive surface in combination as the mounting portion 31. The hook tape has a plurality of hooks composed of a pillar portion and a bulk portion provided on the base film, the length in the longitudinal direction (MD cap diameter) of the umbrella portion is 240 μm, and the length in the width direction of the umbrella portion ( CD cap diameter) is 300 μm, pillar height (pin height) is 100 μm, base film thickness is 55 μm, CD hook diameter is 150 μm, hook basis weight is 60 g / m2, and hook pin number is 3500 / 25.4 mm square. is there.

Further, the adhesive surface is formed by applying an adhesive such as a hot melt adhesive (HMA) to different regions with different basis weights. The pressure-sensitive adhesive used to form the pressure-sensitive adhesive was SBS (styrene-butadiene-styrene copolymer) as the block copolymer, and had viscosities of 6000 MPa · s at 140 ° C, 2800 MPa · s at 160 ° C, and 180 ° C. It is a pressure-sensitive adhesive having physical properties of 1450 MPa · s and a softening point of 85 ° C.

In the samples S11 to S15, hook tapes are arranged in a range of 100 mm in length with a width of 11 mm on one side and an interval of 30 mm, and 2 adhesive surfaces having a width of 10 mm are provided between the hook tapes while changing the basis weight of the adhesive. By arranging the books (total width of 20 mm), the mounting portion 31 is formed (see FIG. 15 for details of the conditions).

Samples S16 to S20 have an adhesive surface formed as a mounting portion 31 by applying an adhesive such as a hot melt adhesive (HMA) to different regions with different basis weights. The pressure-sensitive adhesive used for forming the pressure-sensitive adhesive surface is the same pressure-sensitive adhesive as that used in S1 to S5. In the samples S16 to S20, the attachment portion 31 is formed by arranging two 10 mm wide adhesive surfaces (total 20 mm width) of the adhesive in a range of 100 mm in length while changing the basis weight of the adhesive. (See FIG. 15 for details of the conditions).

Note that all the structures other than the mounting portion 31 are common in the samples S11 to S20. Therefore, the structure of the skin side surface (top sheet 11) of the second auxiliary napkin 1B to which the attachment portion 31 of the first auxiliary napkin 1A is attached is also common.

The top sheet 11 of the second auxiliary napkin 1B is an air-through non-woven fabric having a thickness of 0.4 mm. Further, as a result of conducting a tensile test, the tensile strength when extended by 5% in the longitudinal direction (MD direction) is 4.0 N / mm2, and the maximum tensile strength is 17.2 N / mm2, which is the width direction (CD direction). The tensile strength when extended by 5% is 0.3 N / mm2, and the maximum tensile strength is 4.1 N / mm2. Further, as a result of conducting a tear test, the maximum tear strength in the longitudinal direction (MD direction) is 3.3 N / mm2, and the maximum tear strength in the width direction (CD direction) is 2.7 N / mm2. The absorber used was made of softwood pulp and was crushed and laminated with a basis weight of 200 g / m2 and a thickness of 3 mm. As the back film, a non-breathable film having a basis weight of 25 g / m2 was used.

As a result of the measurement, the peel strength of the first auxiliary napkin 1A (samples S11 to S20) in the longitudinal direction was 2.95N (sample S20) to 6.02N (sample S11), and the peel strength in the width direction was 10. It was 03N (sample S15) to 17.19N (sample S16).

The measurement of the peel strength of the adhesive portion 41 of the sanitary napkin 2 can be performed in substantially the same manner as the measurement of the peel strength of the attachment portion 31 of the first auxiliary napkin 1A, as described with reference to FIG. 9 of the first embodiment. it can. When measuring the peel strength of the adhesive portion 41 of the sanitary napkin 2, first, a sample obtained by cutting the sanitary napkin 2 to a predetermined length in the longitudinal direction is prepared. As shown in FIG. 5, the length of the sanitary napkin 2 in the longitudinal direction is longer than the length of the second auxiliary napkin 1B (auxiliary napkin 1) in the longitudinal direction. This is to make a measurement. In the second embodiment, the sanitary napkin 2 is cut at a position 90 mm from one end in the longitudinal direction of the sanitary napkin 2. Also, the wing portion 2W is cut. When the sanitary napkin 2 to be evaluated has a so-called three-dimensional gather or a portion corresponding to the three-dimensional gather, the measurement is performed after the elastic member of the three-dimensional gather is cut to make the stress not appear. Do.

Then, the surface of the sanitary napkin 2 (sample) cut to a predetermined length is turned upward with the side surface (non-skin side surface in FIG. 4) on which the adhesive portion 41 is provided as shown in FIG. 9 facing upward. Place it on a horizontal table so that it does not wrinkle. The adhesive portion 41 of the sanitary napkin 2 is in an unused state, and the adhesive portion 41 is not touched through the measurement. Next, the second auxiliary napkin 1B is placed on the upper side of the sanitary napkin 2 in the thickness direction so as to be overlapped with the side surface (non-skin side surface) on which the attachment portion 31 is provided facing upward. When stacking the two, make sure that the longitudinal direction of the sanitary napkin 2 and the longitudinal direction of the second auxiliary napkin 1B are aligned. As a result, the entire width direction and the predetermined region in the longitudinal direction of the adhesive portion 41 of the sanitary napkin 2 are in contact with the top sheet 11 of the second auxiliary napkin 1B, and both are lightly engaged (attached). Become.

Then, the airbag 72 is placed on the upper side of the second auxiliary napkin 1B in the thickness direction, and the fixing plate 71 is placed on the upper side of the airbag 72 and fixed. In this state, compressed air is supplied to the airbag 72, and pressurization is performed at a pressure of 300 mmHg for 1 minute. As a result, a uniform compressive force is applied between the fixing plate 71 (and the airbag 72) and the base with respect to the sanitary napkin 2 and the second auxiliary napkin 1B in the thickness direction, and the sanitary napkin 2 (and the sanitary napkin 2 (and the airbag 72) The adhesive portion 41 of the sample) is firmly attached to the top sheet 11 of the second auxiliary napkin 1B (attached member S).

After the adhesive portion 41 is attached to the attached member S, the fixing plate 71 and the airbag 72 are removed, a cloth tape is attached to a predetermined position of the sanitary napkin 2 and the second auxiliary napkin 1B, and the cloth tape is attached and pulled by a tensile tester. Form a grip. Then, the grip portion of the second auxiliary napkin 1B (attached member S) is gripped by the grip on one side of the tensile tester (not shown), and the sanitary napkin 2 (not shown) is gripped on the other side of the tensile tester (not shown). Grasp the grip of the sample). At this time, the gripping interval (distance between one side and the other side) of the tension tester is 20 mm.

Then, the sanitary napkin 2 and the second auxiliary napkin 1B are pulled at a speed of 300 m / min along the longitudinal direction of the sanitary napkin 2, and the length of the adhesive portion 41 of the sanitary napkin 2 is 50 mm in the longitudinal direction. The average value of the load (N) applied until the region to be held is peeled off from the second auxiliary napkin 1B is measured. Such a measurement is performed on a plurality of different (for example, 5) sanitary napkins 2, and the average load thereof is calculated to obtain the peel strength in the longitudinal direction of the adhesive portion 41.

Similarly, the average value of the load (N) when the sanitary napkin 2 and the second auxiliary napkin 1B are pulled at a speed of 300 m / min along the width direction of the sanitary napkin 2B is measured. Such a measurement is performed on a plurality of different (for example, 5) sanitary napkins 2, and the average load thereof is calculated to obtain the peel strength in the width direction of the adhesive portion 41.

FIG. 16 is a table showing measured data on the peel strength of the sanitary napkin 2 with respect to the second auxiliary napkin 1B. As the sanitary napkin 2, 10 types of commercially available sanitary napkins X11 to X20, which will be described later, were used as samples for measurement. As a result, the peel strength of the sanitary napkins 2 (samples X11 to X20) in the longitudinal direction is 1.04N (sample X17) to 2.04N (sample X13), and the peel strength in the width direction is 2.85N (sample X13). It was sample X17) to 6.20N (sample X13).

From the results of FIGS. 15 and 16, the peel strength (2.95N to 6.02N) in the longitudinal direction of the attachment portion 31 of the first auxiliary napkin 1A is the peel strength in the longitudinal direction of the adhesive portion 41 of the sanitary napkin 2. It was confirmed that the value was 1.04N to 2.04N) or higher. As described above, in the auxiliary napkin 1 of the second embodiment, the peel strength of the mounting portion 31 is adjusted so that the peeling strength of the mounting portion 31 in the longitudinal direction is equal to or higher than the peeling strength of the adhesive portion 41 in the longitudinal direction. There is. In other words, after attaching the entire area of the attachment portion 31 of the first auxiliary napkin 1A in an unused state to the skin side surface of the second auxiliary napkin 1B, the second auxiliary napkin 1B to the first auxiliary napkin 1A are attached along the longitudinal direction. The average value of the magnitude of the force applied when peeling off is 50 mm in the entire width direction and 50 mm in the longitudinal direction of the adhesive portion 41 of the unused sanitary napkin 2, and the skin side surface of the second auxiliary napkin 1B. It becomes equal to or more than the average value of the magnitude of the force applied when peeling the sanitary napkin 2 from the second auxiliary napkin 1B along the longitudinal direction of the sanitary napkin 2 after being attached to.

Therefore, after attaching the auxiliary napkin 1 to the skin side surface of the sanitary napkin 2, the sanitary napkin 2 can be removed from the underwear together with the auxiliary napkin 1 by pulling the auxiliary napkin 1 along the longitudinal direction.

With such a configuration, if you want to replace only the auxiliary napkin 1, you can remove only the auxiliary napkin 1 from the sanitary napkin 2 by pulling the auxiliary napkin 1 while holding down the sanitary napkin 2. (See FIG. 14B). On the other hand, when it is desired to replace the sanitary napkin 2 together, the sanitary napkin 2 can be removed from the underwear together with the auxiliary napkin 1 by pulling the auxiliary napkin 1 without pressing the sanitary napkin 2 (Fig.). See 14C). Therefore, the user can easily replace the auxiliary napkin 1 and the sanitary napkin 2.

Further, since the peeling strength of the attachment portion 31 of the auxiliary napkin 1 is equal to or higher than the peel strength of the adhesive portion 41 of the sanitary napkin 2, the peel strength of the attachment portion 31 is smaller than the peel strength of the adhesive portion 41. Then, the auxiliary napkin 1 can be firmly fixed to the sanitary napkin 2. Therefore, even if the user (wearer) moves his / her body significantly while wearing the auxiliary napkin 1 and the sanitary napkin 2, the position of the auxiliary napkin 1 with respect to the sanitary napkin 2 is unlikely to shift, and menstrual blood or the like leaks. It becomes easier to suppress.

Similarly, from the results of FIGS. 15 and 16, the peel strength (10.03N to 17.19N) in the width direction of the attachment portion 31 of the first auxiliary napkin 1A is in the width direction of the adhesive portion 41 of the sanitary napkin 2. It was confirmed that the peel strength was (2.85N to 6.20N) or higher. As described above, in the auxiliary napkin 1 of the second embodiment, the peel strength of the mounting portion 31 is adjusted so that the peeling strength of the mounting portion 31 in the width direction is equal to or higher than the peeling strength of the adhesive portion 41 in the width direction. There is. In other words, after attaching the entire area of the attachment portion 31 of the first auxiliary napkin 1A in an unused state to the skin side surface of the second auxiliary napkin 1B, the second auxiliary napkin 1B to the first auxiliary napkin 1A are attached along the width direction. The average value of the magnitude of the force applied when peeling off is 50 mm in the entire width direction and 50 mm in the longitudinal direction of the adhesive portion 41 of the unused sanitary napkin 2, and the skin side surface of the second auxiliary napkin 1B. It becomes equal to or more than the average value of the magnitude of the force applied when peeling the sanitary napkin 2 from the second auxiliary napkin 1B along the width direction of the sanitary napkin 2 after being attached to. Therefore, as described above, the replacement work of the auxiliary napkin 1 and the sanitary napkin 2 can be easily performed.

Further, in the second embodiment, the length of the auxiliary napkin 1 in the longitudinal direction is shorter than the length of the sanitary napkin 2 in the longitudinal direction. Therefore, when the auxiliary napkin 1 is attached to the sanitary napkin 2 as shown in FIG. 5, the absorber 20 of the sanitary napkin 2 is arranged outside the auxiliary napkin 1 in the longitudinal direction. Therefore, even if a liquid leak occurs outside the auxiliary napkin 1 due to reasons such as the auxiliary napkin 1 not being able to absorb menstrual blood or the like, the leaked liquid is absorbed by the absorber 20 of the sanitary napkin 2. Therefore, it is difficult to stain the wearer's underwear. Further, since the sanitary napkin 2 to which the auxiliary napkin 1 is attached is larger (longer in the longitudinal direction), it becomes easier to attach / detach the auxiliary napkin 1 as described with reference to FIG. For example, when attaching the auxiliary napkin 1, it is possible to prevent the auxiliary napkin 1 from protruding from the sanitary napkin 2 without strictly adjusting the position in the longitudinal direction. Further, when removing the auxiliary napkin 1, since it is difficult for the auxiliary napkin 1 that has absorbed menstrual blood to come into contact with the wearer's underwear, the user can easily perform the removal work without paying excessive attention. In this way, it is possible to facilitate the replacement work of the auxiliary napkin 1.

Further, the length of the auxiliary napkin 1 in the longitudinal direction is longer than the distance between the first fold F1 and the second fold F2, which are folds when the sanitary napkin 2 is packed (see FIG. 5). With such a configuration, when attaching the auxiliary napkin 1 to the sanitary napkin 2, the user can adjust the position of the auxiliary napkin 1 with reference to the creases F1 and F2. Specifically, the front end of the auxiliary napkin 1 in the longitudinal direction is on the front side of the first fold F1, and the rear end of the auxiliary napkin 1 in the longitudinal direction is on the rear side of the second fold F2. That is, the auxiliary napkin 1 is arranged so as to straddle the first fold F1 and the second fold F2 in the longitudinal direction. As a result, the auxiliary napkin 1 can be arranged at an appropriate position on the skin side surface of the sanitary napkin 2. Therefore, the work of attaching the auxiliary napkin 1 becomes easier.

It is also desirable that the color of the auxiliary napkin 1 and the color of the sanitary napkin 2 are different. At least, it is desirable that the color of the outer edge portion of the auxiliary napkin 1 (that is, the contour portion of the auxiliary napkin 1) and the color of the skin side surface of the sanitary napkin 2 are different. When the auxiliary napkin 1 is attached to the sanitary napkin 2 as shown in FIG. 5, if the color of the outer edge of the auxiliary napkin 1 and the color of the skin side surface of the sanitary napkin 2 are different, the contour of the auxiliary napkin 1 is It becomes easier to see. Therefore, the user can easily recognize whether or not the mounting position of the auxiliary napkin 1 is appropriate for the sanitary napkin 2. Further, when removing the auxiliary napkin 1, it becomes easy to recognize the place where the auxiliary napkin 1 is gripped. By this. The work of attaching the auxiliary napkin 1 becomes easier. In addition, "different" means a state in which the hues of the Ostwald color system are deviated by three or more hues.

Furthermore, it is desirable that the color of the absorber 10 of the auxiliary napkin 1 is a reddish color. Specifically, it is desirable that the color is included in the range of 4 to 9 (the range of "orange" or "red") in the hue number of the Ostwald hue circle. Since the absorber 10 of the auxiliary napkin 1 is mainly intended to absorb menstrual blood, the effect of concealing the absorbed menstrual blood can be obtained by setting the color of the absorber 10 to be red. As a result, when replacing the used auxiliary napkin 1, the user can dispose of the used auxiliary napkin 1 without worrying about the eyes of others.

Further, it is desirable that the attachment portion 31 of the auxiliary napkin 1 is removable from the sanitary napkin 2. In other words, it is desirable that the attachment portion 31 can maintain a sufficient bonding force even when the auxiliary napkin 1 is attached and detached to the skin side surface of the sanitary napkin 2 a plurality of times. With such a configuration, the position of the auxiliary napkin 1 can be easily adjusted with respect to the sanitary napkin 2. For example, when the auxiliary napkin 1 is attached to the skin side surface of the sanitary napkin 2 and then the attachment position is to be changed, even if the auxiliary napkin 1 is once removed from the sanitary napkin 2, the position is changed, and then the auxiliary napkin 1 is attached again. , The auxiliary napkin 1 can be firmly fixed. This makes it easier to attach the auxiliary napkin 1.

In the second embodiment, the attachment portion 31 of the auxiliary napkin 1 may be configured to include a hook-and-loop fastener, in which case the attachment / detachment to / from the sanitary napkin 2 becomes easier. If the attachment portion 31 is composed of only an adhesive surface using an adhesive or the like, when the attachment portion 31 is attached to the sanitary napkin 2 and peeled off, the non-woven fabric is attached to the attachment portion 31 (adhesive surface). Fibers and the like adhere to each other and the bonding force is reduced. In this case, it is often difficult to attach the attachment portion 31 to the sanitary napkin 2 a plurality of times. In particular, in the second embodiment, it becomes difficult to remove the sanitary napkin 2 together with the auxiliary napkin 1. On the other hand, if at least a part of the mounting portion 31 is composed of the hook-and-loop fastener, the hook-and-loop fastener portion even after the mounting portion 31 is engaged with the skin side surface of the sanitary napkin 2 and then peeled off. Engagement force (joining force) is hard to decrease. Therefore, the attachment / detachment of the attachment portion 31 is attached / detached while satisfying the above-mentioned relationship (peeling strength of the attachment portion 31 of the first auxiliary napkin 1A ≥ peel strength of the adhesive portion 41 of the sanitary napkin 2) with respect to the sanitary napkin 2. Can be repeated. Thereby, the attachment position of the auxiliary napkin 1 with respect to the sanitary napkin 2 can be easily adjusted.

FIG. 17 is a table showing the results of verifying the change in peel strength when the attachment portion 31 of the auxiliary napkin 1 is repeatedly attached and detached. The repeated peel strength was verified as follows. First, as the auxiliary napkin 1 for which the peeling strength is repeatedly measured, the sample S11 (hook tape + adhesive surface 40 g / m2) described with reference to FIG. 15 is prepared. Then, the peel strength of the sample S11 is measured for the first time by the method described with reference to FIG. 7. Next, using the sample S1 used for the first measurement of the peel strength, the peel strength is measured again by the method described with reference to FIG. 7 (second measurement). This operation was performed a plurality of times (three times in the second embodiment), and it was verified how the peel strength changes when the attachment / detachment portion 31 is repeatedly attached / detached.

As shown in FIG. 17, when the attachment portion 31 repeats the peel strength measurement three times using the auxiliary napkin 1 formed by the combination of the hook tape (hook-and-loop fastener) and the adhesive surface, the adhesive surface is provided. Therefore, it can be seen that the peel strength gradually decreases. However, even after repeating the attachment / detachment three times, the peel strength in the longitudinal direction (1.04N to 2.04N) and the peel strength in the width direction (2.85N to 6.20N) of the adhesive portion 41 of the sanitary napkin 2 It was confirmed that the peel strength of the auxiliary napkin 1 (sample S11) was maintained stronger than that of the auxiliary napkin 1. That is, it was confirmed that at least the engaging force (joining force) of the hook-and-loop fastener portion was maintained. Therefore, while maintaining the relationship of "peeling strength of the mounting portion 31 of the first auxiliary napkin 1A ≥ peeling strength of the adhesive portion 41 of the sanitary napkin 2," the mounting portion 31 can be repeatedly attached and detached.

Since the auxiliary napkin 1 is a consumable item, it is sufficient that the attachment portion 31 can be attached / detached several times. Therefore, in the attaching / detaching operation of about three times as in the sample S11 of FIG. If the relationship of "peeling strength of the attachment portion 31 of the auxiliary napkin 1A (sample S11) ≥ peeling strength of the adhesive portion 41 of the sanitary napkin 2" can be maintained, there is no practical problem.

Further, as shown in FIG. 1, in the longitudinal direction, the mounting portion 31 is provided at a predetermined distance from the outer edge of the auxiliary napkin 1. In other words, in the longitudinal direction, a predetermined gap (interval) is provided between one end (for example, the front side) of the mounting portion 31 and one side (for example, the front side) end of the auxiliary napkin 1. In such a gap portion, the non-skin side surface of the auxiliary napkin 1 and the skin side surface of the sanitary napkin 2 are not joined because the bonding force by the attachment portion 31 does not act. That is, even when the auxiliary napkin 1 is attached to the sanitary napkin 2, the non-skin side surface of the auxiliary napkin 1 floats in the thickness direction from the skin side surface of the sanitary napkin 2 in the gap portion. .. Therefore, when the auxiliary napkin 1 is removed from the sanitary napkin 2, the gap portion becomes the "grip portion" of the auxiliary napkin 1, and the user can easily grasp the grip portion and pull the auxiliary napkin 1. As a result, the auxiliary napkin 1 can be easily attached and detached.

However, in the longitudinal direction, there may not be a gap between the mounting portion 31 and the outer edge of the auxiliary napkin 1. With such a configuration, the engaging force of the attachment portion 31 becomes larger, so that when the auxiliary napkin 1 is attached to the skin side surface of the sanitary napkin 2, it becomes easier to fix the auxiliary napkin 1 more firmly. Therefore, even when the user walks or exercises while wearing the auxiliary napkin 1 and the sanitary napkin 2, the misalignment of the auxiliary napkin 1 can be made less likely to occur.

Further, in the auxiliary napkin 1, as shown in FIG. 1, a pair of attachment portions 31, 31 are provided on both outer sides of the central position CI in the width direction. That is, the mounting portion 31 is not provided at the central portion in the width direction. Therefore, in the auxiliary napkin 1 of the second embodiment, the rigidity in the central portion in the width direction is lower than the rigidity in the both side portions (the portions where the attachment portions 31 are provided).

When the user (wearer) wears the auxiliary napkin 1, the auxiliary napkin 1 usually undergoes three-dimensional deformation according to the unevenness of the wearer's body shape. In the auxiliary napkin 1 of the second embodiment, since the rigidity at the central portion in the width direction is lower than the rigidity at the central portion in the width direction as described above, the auxiliary napkin 1 is placed in the width direction along the central position CI in the width direction. It is prone to bending and deformation. Specifically, when the auxiliary napkin 1 is attached, the auxiliary napkin 1 is easily deformed into a substantially mountain-shaped shape in which the central position CI in the width direction is convex toward the skin in the thickness direction. In this way, the central portion in the width direction is convexly deformed toward the skin side, so that the auxiliary napkin 1 easily comes into contact with the wearer's vagina or the like, the fit at the time of wearing is improved, and excrement fluid such as menstrual blood is discharged. It becomes easier to absorb.

The auxiliary napkin 1 may be bent in the width direction in advance at the center position CI in the width direction to give a crease. That is, the auxiliary napkin 1 may have a bending guide line extending in the longitudinal direction along the central position CI in the width direction. If such a bending guide line (folding habit) is provided, it is possible to make it easier for the convex deformation when the auxiliary napkin 1 is attached as described above to occur more naturally. Further, by packaging the auxiliary napkin 1 in a state of being folded in half in the width direction by the bending guide wire, the individual package of the auxiliary napkin 1 can be compactly formed. In this way, the user can easily carry the auxiliary napkin 1 in a bag or the like, and thus can easily perform work such as exchanging only the auxiliary napkin 1 in the restroom on the go.

Further, the auxiliary napkin 1 has a liquid-impermeable back sheet 14 on the non-skin side of the absorber 10 in the thickness direction. Therefore, even when the absorber 10 absorbs menstrual blood or the like, the back sheet 14 restricts the movement of menstrual blood from the skin side to the non-skin side in the thickness direction. As a result, when the auxiliary napkin 1 is used on the skin side of the sanitary napkin 2, the menstrual blood absorbed by the absorber 10 of the auxiliary napkin 1 can move to the absorber 20 of the sanitary napkin 2. It is suppressed. Therefore, the absorber 20 of the sanitary napkin 2 is less likely to get dirty, and the sanitary napkin 2 can be made to last longer.

<About the target sanitary napkin 2>
Here, the sanitary napkin 2 to which the auxiliary napkin 1 of the second embodiment is attached will be described. The auxiliary napkin 1 of the second embodiment can be used for a sanitary napkin 2 provided with an adhesive portion 41 having a peeling strength of a predetermined size. Specifically, of the unused adhesive portion 41, the entire width direction and 50 mm region in the longitudinal direction are attached to "cotton" (Kanakin No. 3), which is a white cloth attached for testing in accordance with JIS L 0803. Then, the average value of the magnitude of the force applied when peeling the sanitary napkin 2 from the cotton of the white cloth attached to the test along the longitudinal direction of the sanitary napkin 2 is 2.02N or more and 4.53N or less. It can be used for sanitary napkins 2.

FIG. 18 is a table showing the results of measuring the peel strength of the adhesive portion 41 for a plurality of types of sanitary napkins 2.

The peel strength of the adhesive portion 41 of the sanitary napkin 2 can be measured in substantially the same manner as the peel strength measuring method described with reference to FIG. First, a plurality of types of commercially available sanitary napkins are prepared, and a sample is prepared by cutting each of them into a predetermined length (for example, 90 mm) in the longitudinal direction. In the second embodiment, as sanitary napkins 2 that are supposed to be used, 10 types of samples of different types and sizes (lengths in the longitudinal direction) of X11 to X20 are prepared, and the peel strength is measured for each of them. It was. Hereinafter, a case where the sample X11 is measured will be described as an example.

Regarding the sample X11 of the sanitary napkin 2 cut to a predetermined length, wrinkles are formed on the surface of the sample X11 of the sanitary napkin 2 with the surface on the side where the adhesive portion 41 is provided facing upward, as described in FIG. 12 of the first embodiment. Place it on a horizontal table so that it does not occur. The adhesive portion 41 of the sample X11 is in an unused state, and the adhesive portion 41 is not touched through the measurement.

Next, the attached member S is placed on the upper side of the sample X11 in the thickness direction. As the member S to be attached, "cotton" (also called "Kanakin No. 3") among the white cloths attached for testing conforming to JIS L0803 is used. Since the details of Kanakin No. 3 are known, the description thereof is omitted here.

Then, the airbag 72 is placed on the upper side of the attached member S (Kanakin No. 3) in the thickness direction, and the fixing plate 71 is placed on the airbag 72 and fixed. In this state, compressed air is supplied to the airbag 72, and pressurization is performed at a pressure of 300 mmHg for 1 minute. As a result, a uniform compressive force is applied between the fixing plate 71 (and the airbag 72) and the base with respect to the sample X11 and the attached member S in the thickness direction, and the adhesive portion 41 of the sample X11 is covered. It is firmly attached to the mounting member S.

After the adhesive portion 41 is attached to the attached member S, the fixing plate 71 and the airbag 72 are removed, the cloth tape is attached to the predetermined positions of the sample X11 and the attached member S, and the grip portion when pulled by the tensile tester is used. Form. Then, the grip portion of the attached member S is gripped by the grip on one side of the tensile tester (not shown), and the grip portion of the sample X11 is gripped by the grip on the other side of the tensile tester (not shown). At this time, the gripping interval (distance between one side and the other side) of the tension tester is 20 mm.

Then, both are pulled at a speed of 300 m / min along the longitudinal direction of the sample X11 (sanitary napkin 2), and a region having a length of 50 mm in the longitudinal direction of the adhesive portion 41 of the sample X1 is formed from the attached member S. The average value of the load (N) applied until peeling is measured. The same measurement is performed a plurality of times (for example, 5 times), and the average load thereof is calculated to obtain the peel strength in the longitudinal direction of the adhesive portion 41.

When the peel strength of the adhesive portion 41 was measured for each of the samples X11 to X20 in this way, the data shown in FIG. 18 was obtained. In FIG. 18, the length (mm) represents the length (size of the napkin) in the longitudinal direction of each sanitary napkin 2 before cutting, and the average load (N) is each obtained by the above measurement. It shows the peeling strength of the sanitary napkin 2 of. As a result, the maximum value of the peel strength of the adhesive portion 41 was 2.02N (sample X14), and the minimum value was 4.53N (sample X13).

For each of the sanitary napkins 2 corresponding to the samples X11 to X20, the peel strength of the adhesive portion 41 described with reference to FIGS. 15 to 16 is compared with the peel strength of the attachment portion 31 of the auxiliary napkin 1, and eventually Also in the case of, the peel strength of the mounting portion 31 is adjusted so that the peeling strength of the mounting portion 31 is equal to or higher than the peeling strength of the adhesive portion 41. As a result, when the auxiliary napkin 1 is attached to the sanitary napkin 2 in which the peel strength of the adhesive portion 41 is at least 2.02 N or more and 4.53 N or less, the peel strength of the adhesive portion 41 described above is obtained. And the peeling strength of the mounting portion 31 can be satisfied. That is, it is possible to realize an auxiliary napkin 1 in which the sanitary napkin 2 and the auxiliary napkin 1 can be easily replaced.
=== Other embodiments ===

Although the embodiments of the present invention have been described above, the above embodiments are for facilitating the understanding of the present invention, and are not for limiting the interpretation of the present invention. Further, it is needless to say that the present invention can be modified or improved without departing from the spirit thereof, and the present invention includes an equivalent thereof.

1 Auxiliary napkin,
1A 1st auxiliary napkin, 1B 2nd auxiliary napkin (attached member),
2 Sanitary napkins,
2C napkin body, 2W wing,
10 absorber,
11 top seats, 12 middle seats, 13 side seats, 14 back seats,
20 absorber,
21 top sheet, 22 second sheet, 23 side flaps,
24 backseat,
31 Mounting part,
41 adhesive part, 42 wing adhesive part,
70 airbag type pressurizer, 71 fixing plate, 72 airbag,
F1 1st fold, F2 2nd fold,
S Attached member

Claims (30)

1. It has a longitudinal direction and a width direction that intersect each other,
   An auxiliary napkin that is attached to the side of the skin of a sanitary napkin and is used.
   On the non-skin side surface of the auxiliary napkin, an attachment portion for attaching the auxiliary napkin to the skin side surface of the sanitary napkin is provided.
   On the non-skin side surface of the sanitary napkin, an adhesive portion for fixing the sanitary napkin to the user's underwear is provided.
   The entire area of the unused attachment portion is attached to the skin side surface of the second auxiliary napkin having the same configuration as the auxiliary napkin, and then the auxiliary napkin is peeled off from the second auxiliary napkin along the longitudinal direction. The average value of the amount of force applied at times is
   Of the unused adhesive portion, a region of 50 mm in the width direction and 50 mm in the longitudinal direction is attached to the skin side surface of the second auxiliary napkin, and then the first along the longitudinal direction of the sanitary napkin. 2 It is smaller than the average value of the amount of force applied when peeling the sanitary napkin from the auxiliary napkin.
   Auxiliary napkin characterized by that.
2. The auxiliary napkin according to claim 1.
   The magnitude of the force applied when the entire area of the unused attachment portion is attached to the skin side surface of the second auxiliary napkin and then the auxiliary napkin is peeled off from the second auxiliary napkin along the width direction. The average value is
   Of the unused adhesive portion, a region of 50 mm in the width direction and 50 mm in the longitudinal direction is attached to the skin side surface of the second auxiliary napkin, and then the first portion is attached along the width direction of the sanitary napkin. 2. An auxiliary napkin characterized in that it is smaller than the average value of the magnitude of the force applied when the sanitary napkin is peeled off from the auxiliary napkin.
3. The auxiliary napkin according to claim 1 or 2.
   The length of the auxiliary napkin in the longitudinal direction is
   An auxiliary napkin, characterized in that it is shorter than the length of the sanitary napkin in the longitudinal direction.
4. The auxiliary napkin according to any one of claims 1 to 3.
   The sanitary napkin is provided with first folds and second folds, which are folds for packing the sanitary napkin, at different positions in the longitudinal direction of the sanitary napkin.
   The length of the auxiliary napkin in the longitudinal direction is
   An auxiliary napkin characterized in that the distance between the first fold and the second fold is longer than the distance between the sanitary napkin in the longitudinal direction.
5. The auxiliary napkin according to any one of claims 1 to 4.
   An auxiliary napkin characterized in that the color of the sanitary napkin is different from the color of the auxiliary napkin.
6. The auxiliary napkin according to any one of claims 1 to 5.
   The auxiliary napkin is characterized in that the color of the auxiliary napkin is a color included in the range of 4 to 9 in the hue number of the Ostwald hue circle.
7. The auxiliary napkin according to any one of claims 1 to 6.
   The auxiliary napkin is characterized in that the attachment portion is removable from the skin side surface of the sanitary napkin.
8. The auxiliary napkin according to claim 7.
   An auxiliary napkin characterized in that the mounting portion is composed of a hook-and-loop fastener.
9. The auxiliary napkin according to any one of claims 1 to 8.
   An auxiliary napkin, characterized in that, in the longitudinal direction, a predetermined gap is provided between one end of the attachment portion and the one end of the auxiliary napkin.
10. The auxiliary napkin according to any one of claims 1 to 8.
    An auxiliary napkin characterized in that no gap is provided between one end of the attachment portion and the one end of the auxiliary napkin in the longitudinal direction.
11. The auxiliary napkin according to any one of claims 1 to 10.
    An auxiliary napkin characterized in that the mounting portion is not provided at the central portion in the width direction.
12. The auxiliary napkin according to claim 11.
    An auxiliary napkin characterized in that a bending guide line extending in the longitudinal direction is provided at the central portion in the width direction.
13. The auxiliary napkin according to any one of claims 1 to 12.
    With a liquid-absorbing absorber,
    A liquid-impermeable back sheet provided on the non-skin side of the absorber,
    Auxiliary napkins that are characterized by having.
14. The auxiliary napkin according to any one of claims 1 to 13.
    Of the unused adhesive portion, the entire width direction of the sanitary napkin and the 50 mm region in the longitudinal direction of the sanitary napkin are attached to the cotton of the test attachment white cloth conforming to JIS L 0803. , The average value of the magnitude of the force applied when peeling the sanitary napkin from the cotton of the white cloth attached to the test along the longitudinal direction of the sanitary napkin is 2.87N or more and 13.12N or less. An auxiliary napkin that is used by attaching it to the side of the skin of the napkin.
15. A napkin set having a sanitary napkin and an auxiliary napkin attached to the skin side surface of the sanitary napkin.
    On the non-skin side surface of the auxiliary napkin, an attachment portion for attaching the auxiliary napkin to the skin side surface of the sanitary napkin is provided.
    On the non-skin side surface of the sanitary napkin, an adhesive portion for fixing the sanitary napkin to the user's underwear is provided.
    The entire area of the unused attachment portion is attached to the skin side surface of the second auxiliary napkin having the same configuration as the auxiliary napkin, and then the auxiliary napkin is attached to the auxiliary along the longitudinal direction of the auxiliary napkin. The average value of the force applied when peeling off the napkin is
    Of the unused adhesive portion, a region of 50 mm in the width direction and 50 mm in the longitudinal direction is attached to the skin side surface of the second auxiliary napkin, and then the first along the longitudinal direction of the sanitary napkin. 2 It is smaller than the average value of the amount of force applied when peeling the sanitary napkin from the auxiliary napkin.
    A napkin set featuring that.
16. It has a longitudinal direction and a width direction that intersect each other,
    An auxiliary napkin that is attached to the side of the skin of a sanitary napkin and is used.
    On the non-skin side surface of the auxiliary napkin, an attachment portion for attaching the auxiliary napkin to the skin side surface of the sanitary napkin is provided.
    On the non-skin side surface of the sanitary napkin, an adhesive portion for fixing the sanitary napkin to the user's underwear is provided.
    The entire area of the unused attachment portion is attached to the skin side surface of the second auxiliary napkin having the same configuration as the auxiliary napkin, and then the auxiliary napkin is peeled off from the second auxiliary napkin along the longitudinal direction. The average value of the amount of force applied at times is
    Of the unused adhesive portion, a region of 50 mm in the width direction and 50 mm in the longitudinal direction is attached to the skin side surface of the second auxiliary napkin, and then the first along the longitudinal direction of the sanitary napkin. 2 It is equal to or greater than the average value of the force applied when peeling the sanitary napkin from the auxiliary napkin.
    Auxiliary napkin characterized by that.
17. The auxiliary napkin according to claim 16.
    The magnitude of the force applied when the entire area of the unused attachment portion is attached to the skin side surface of the second auxiliary napkin and then the auxiliary napkin is peeled off from the second auxiliary napkin along the width direction. The average value is
    Of the unused adhesive portion, a region of 50 mm in the width direction and 50 mm in the longitudinal direction is attached to the skin side surface of the second auxiliary napkin, and then the first portion is attached along the width direction of the sanitary napkin. 2. An auxiliary napkin characterized in that it is equal to or greater than the average value of the magnitude of the force applied when the sanitary napkin is peeled off from the auxiliary napkin.
18. The auxiliary napkin according to claim 16 or 17.
    The length of the auxiliary napkin in the longitudinal direction is
    An auxiliary napkin, characterized in that it is shorter than the length of the sanitary napkin in the longitudinal direction.
19. The auxiliary napkin according to any one of claims 16 to 18.
    The sanitary napkin is provided with first folds and second folds, which are folds for packing the sanitary napkin, at different positions in the longitudinal direction of the sanitary napkin.
    The length of the auxiliary napkin in the longitudinal direction is
    An auxiliary napkin characterized in that the distance between the first fold and the second fold is longer than the distance between the sanitary napkin in the longitudinal direction.
20. The auxiliary napkin according to any one of claims 16 to 19.
    An auxiliary napkin characterized in that the color of the sanitary napkin is different from the color of the auxiliary napkin.
21. The auxiliary napkin according to any one of claims 16 to 20.
    The auxiliary napkin is characterized in that the color of the auxiliary napkin is a color included in the range of 4 to 9 in the hue number of the Ostwald hue circle.
22. The auxiliary napkin according to any one of claims 16 to 21.
    The auxiliary napkin is characterized in that the attachment portion is removable from the skin side surface of the sanitary napkin.
23. The auxiliary napkin according to claim 22.
    An auxiliary napkin characterized in that the mounting portion is configured to include a hook-and-loop fastener.
24. The auxiliary napkin according to any one of claims 16 to 23.
    An auxiliary napkin, characterized in that, in the longitudinal direction, a predetermined gap is provided between one end of the attachment portion and the one end of the auxiliary napkin.
25. The auxiliary napkin according to any one of claims 16 to 23.
    An auxiliary napkin characterized in that no gap is provided between one end of the attachment portion and the one end of the auxiliary napkin in the longitudinal direction.
26. The auxiliary napkin according to any one of claims 16 to 25.
    An auxiliary napkin characterized in that the mounting portion is not provided at the central portion in the width direction.
27. The auxiliary napkin according to claim 26.
    An auxiliary napkin characterized in that a bending guide line extending in the longitudinal direction is provided at the central portion in the width direction.
28. The auxiliary napkin according to any one of claims 16 to 27.
    With a liquid-absorbing absorber,
    A liquid-impermeable back sheet provided on the non-skin side of the absorber,
    Auxiliary napkins that are characterized by having.
29. The auxiliary napkin according to any one of claims 16 to 28.
    Of the unused adhesive portion, the entire width direction of the sanitary napkin and the 50 mm region in the longitudinal direction of the sanitary napkin are attached to the cotton of the test attachment white cloth conforming to JIS L 0803. , The average value of the magnitude of the force applied when peeling the sanitary napkin from the cotton of the white cloth attached to the test along the longitudinal direction of the sanitary napkin is 2.02N or more and 4.53N or less. An auxiliary napkin that is used by attaching it to the side of the skin of the napkin.
30. A napkin set having a sanitary napkin and an auxiliary napkin attached to the skin side surface of the sanitary napkin.
    On the non-skin side surface of the auxiliary napkin, an attachment portion for attaching the auxiliary napkin to the skin side surface of the sanitary napkin is provided.
    On the non-skin side surface of the sanitary napkin, an adhesive portion for fixing the sanitary napkin to the user's underwear is provided.
    The entire area of the unused attachment portion is attached to the skin side surface of the second auxiliary napkin having the same configuration as the auxiliary napkin, and then the auxiliary napkin is attached to the auxiliary along the longitudinal direction of the auxiliary napkin. The average value of the force applied when peeling off the napkin is
    Of the unused adhesive portion, a region of 50 mm in the width direction and 50 mm in the longitudinal direction is attached to the skin side surface of the second auxiliary napkin, and then the first along the longitudinal direction of the sanitary napkin. 2 It is equal to or greater than the average value of the force applied when peeling the sanitary napkin from the auxiliary napkin.
    A napkin set featuring that.
    

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