KR20200103000A - Absorbent article - Google Patents

Abstract

It provides an absorbent article provided with a tape member capable of suppressing discomfort. The absorbent article 10 has a front-rear direction (L), a width direction (W) orthogonal to the front-rear direction (L), a surface sheet 20 facing the wearer's skin, and toward the side opposite to the wearer's skin. A body portion including a true back sheet 22, an absorber 30 between the top sheet 20 and the back sheet 22, and a tape member 60 for post-treatment fixed to the body portion. The bending stiffness of the tape member 60 is lower than that of the portion where the top sheet 20, the back sheet 22, and the absorber 30 are overlapped.

Description

Absorbent article

The present invention relates to an absorbent article provided with a tape for post-treatment.

Absorbent articles, such as sanitary napkins, panty liners, adult incontinence pads or fecal pads, are attached to the inside of the worn article worn by the wearer when in use. In general, the absorbent article attached to the inside of the worn article has an adhesive portion for preventing the absorbent article from shifting from the worn article. This adhesive portion is provided on the side of the absorbent article opposite to the skin side (the side facing the wearer's skin).

Patent Document 1 discloses an absorbent article such as a disposable diaper or sanitary napkin provided with a fixing tape for post-treatment. This fixing tape includes a base portion fixed to the back sheet, and an elongated portion that can be stretched next to the base portion. The fixing tape has two bent portions that roughly divide the fixing tape into three portions in the longitudinal direction of the fixing tape. The fixing tape is folded in three at this bent portion and folded. The stretched portion is adhered to the base portion so as to be peelable by a weak adhesive surface. The bonding portion of the stretched portion is made to be bonded to the backsheet of the absorbent article at the time of disposal due to the strong adhesive surface.

Patent Document 1: Japanese Patent Application Laid-Open No. Hei 9-99010

As a result of intensive examination, the inventor of the present application discovered the following problems regarding a tape member for post-treatment. That is, conventionally, it is not assumed that the tape member for post-treatment gives the wearer a feeling of incongruity in wearing. However, it has been found that during the wearing of the absorbent article, a part of the tape member may directly contact the wearer's skin due to the curling of the end of the sheet near the tape member for post-treatment.

In addition, in absorbent articles that are adhered to the wearer's clothing, such as sanitary napkins, panty liners, adult incontinence pads, or fecal pads, the absorbent article is in a state of being pressed against the wearer's skin by wearing the tape member. This may cause discomfort.

In particular, in an absorbent article attached to an undergarment such as underpants, the absorbent article is in a rounded state along the round buttocks. If a tape member having a relatively high rigidity is disposed in such a curved area, the wearer may feel more uncomfortable.

Therefore, there is a need for an absorbent article provided with a tape member capable of suppressing a sense of discomfort.

An absorbent article according to an aspect includes a front-rear direction, a width direction orthogonal to the front-rear direction, a top sheet facing the wearer's skin, a back sheet facing away from the wearer's skin, the top sheet and the And a body portion including an absorber between back sheets, and a tape member for post-treatment fixed to the body portion, and the bending stiffness of the tape member is of a portion overlapping the top sheet, the back sheet, and the absorber. Lower than the bending stiffness.

1 is a plan view of an absorbent article according to a first embodiment as viewed from the skin surface side.
2 is a plan view of the absorbent article according to the first embodiment as viewed from the non-skin surface side.
3 is a perspective view of the absorbent article wound in the front-rear direction.
4 is a plan view of the absorbent article according to the second embodiment as viewed from the non-skin surface side.

(1) Summary of embodiment

At least the following matters become clear from description of this specification and attached drawings.

An absorbent article according to an aspect includes a front-rear direction, a width direction orthogonal to the front-rear direction, a top sheet facing the wearer's skin, a back sheet facing away from the wearer's skin, the top sheet and the And a body portion including an absorber between back sheets, and a tape member for post-treatment fixed to the body portion, and the bending stiffness of the tape member is of a portion overlapping the top sheet, the back sheet, and the absorber. Lower than the bending stiffness.

During wearing of the absorbent article, a part of the tape member may directly contact the wearer's skin due to curling of the end of the sheet near the tape member for post-treatment. Here, since the bending stiffness of the tape member is lower than the bending stiffness of the portion where the top sheet, the back sheet, and the absorber are overlapped, the wearer is less likely to feel discomfort with the tape member than the portion where the top sheet, the back sheet, and the absorber are overlapped .

According to a preferred aspect, the bending stiffness of the tape member is lower than that of the absorber.

Thereby, the feeling of discomfort given by the tape member to the wearer can be further suppressed.

According to a preferred aspect, the tape member is provided on the non-skin surface side of the back sheet, and the bending stiffness of the tape member is lower than that of the back sheet.

In particular, since the bending stiffness of the tape member provided on the non-skin side of the back sheet is lower than that of the back sheet, even if the absorbent article and the skin are rubbed by the movement while wearing, the wearer recognizes the feeling that the tape member is present. Difficult to do. Therefore, the feeling of discomfort given to the wearer can be more suppressed.

According to a preferred aspect, the tape member has a fixing portion fixed to the main body and a non-fixing portion that is not fixed to the main body and does not have an adhesive material.

As a result, during wearing of the absorbent article, the end of the sheet near the tape member for post-treatment is curled, so that a part of the tape member may directly contact the wearer's skin. Even in this case, since the adhesive material is not provided in the non-fixing portion of the tape member, it is possible to prevent the tape member from adhering to the wearer's skin. Further, since the adhesive material is not provided in the non-fixing portion of the tape member, it is possible to prevent the problem that the tape member adheres to the adhesive material of the tape member itself during wearing.

According to a preferred aspect, at least the non-fixing portion of the tape member is configured to be extendable in the stretching direction.

Since at least the non-fixing portion of the tape member is configured to be stretchable in the stretching direction, when fixing the wound absorbent article with the tape member, it is possible to easily fix the absorbent article with the tape member.

Further, when the non-fixed portion of the tape member is stretched in the stretching direction, the non-fixed portion of the tape member is necked in in a direction orthogonal to the stretching direction. Here, when the non-fixing portion has an adhesive material, due to the difference in elasticity between the adhesive material and the tape member, the non-fixing portion of the tape member tends to turn over in the width direction. When the non-fixing portion of the tape member is turned over, the tape member itself may stick to the adhesive material of the tape member. Therefore, when at least the non-fixing portion of the tape member is configured to be stretchable, it is preferable that the non-fixing portion does not have an adhesive material.

According to a preferred aspect, the tape member is composed of a single sheet that is not folded.

Thereby, compared with the tape member folded in a plurality of layers, the feeling of discomfort to the wearer can be suppressed more.

According to a preferred aspect, the tape member is made of a film that does not contain an antistatic agent.

As a result, the tape member tends to stick to the body portion by static electricity. When the tape member adheres to the body portion, curling of the tape member during wearing of the absorbent article can be suppressed.

According to a preferred aspect, it has an adhesive portion provided on the non-skin side of the back sheet.

An absorbent article such as a sanitary napkin, a panty liner, an adult incontinence pad, or a fecal pad can be fixed to the wearer's clothing such as pants by the adhesive portion provided on the non-skin side of the back sheet. Also in this case, since the rigidity of the tape member is low, it is possible to suppress the wearer's discomfort caused by the tape member.

Further, when the absorbent article is wound after use of the absorbent article, the tape member can be fixed to the adhesive portion. Accordingly, the adhesive portion can be used both for fixing to the clothing and for fixing the tape member for post-treatment.

According to a preferred aspect, the absorbent article is configured to be fixed to the wearer's underwear when in use, and the tape member is 1/3 of the length of the absorbent article in the front-rear direction from the rear edge of the absorbent article. It is provided in the central portion of the absorbent article in the width direction within the range of the length of.

Thereby, the tape member is disposed at a position corresponding to a crack (blunt heat) of the buttocks of the wearer. In this way, since the tape member is disposed at the dent in the wearer's skin, the feeling of incongruity in wearing due to the tape member can be reduced.

According to a preferred aspect, the tape member is provided within a range of 15% of the length of the absorbent article in the front-rear direction from the rear edge of the absorbent article.

Thereby, the tape member is disposed at a position corresponding to a crack (blunt heat) of the buttocks of the wearer. In this way, since the tape member is disposed at the dent in the wearer's skin, the feeling of incongruity in wearing due to the tape member can be reduced.

(2) Composition of absorbent article

Hereinafter, an absorbent article according to an embodiment will be described with reference to the drawings. The absorbent article may be an absorbent article such as a sanitary napkin, a panty liner, a breast milk pad, an adult incontinence pad, a fecal pad, or a sweat absorbing sheet. In particular, the absorbent article may be an article attached to the inside of a worn article such as an undergarment of a user and used.

In the description of the following drawings, the same or similar reference numerals are attached to the same or similar parts. However, it should be noted that the drawings are schematic, and the ratio of each dimension may be different from that in reality. Therefore, specific dimensions and the like should be determined in consideration of the following description. In addition, there are cases in which parts in which the relationship and ratio of the dimensions are different from each other are included in the drawings.

1 is a plan view of an absorbent article according to a first embodiment as viewed from the skin surface side. 2 is a plan view of the absorbent article according to the first embodiment as viewed from the non-skin surface side. Here, the "skin surface side" corresponds to the side facing the wearer's skin during use. "Non-skin surface side" corresponds to the side facing the wearer's skin during use.

The absorbent article has a front-rear direction (L) and a width direction (W). The anteroposterior direction L is a direction extending from the front (abdominal side) of the wearer to the rear (dorsal side) or a direction extending from the rear side of the wearer to the front. The width direction W is a direction orthogonal to the front-rear direction L.

The absorbent article 10 includes a top sheet 20 facing the wearer's skin, a back sheet 22 facing away from the wearer's skin, and an absorber between the top sheet 20 and the back sheet 22 It has a main body including 30. The top sheet 20 faces toward the wearer's skin during use. The back sheet 22 is directed to the side opposite to the wearer's skin during use. The absorbent body 30 extends along the front-rear direction L of the absorbent article.

The absorbent article 10 may have a wing 40 and a hip flap 50. The wing 40 is folded to the non-skin surface side of the crotch portion of the worn article when in use. The hip flap 50 is a portion that is expanded in the width direction W from the rear of the wing 40. The hip flap 50 is a portion that expands outward from the outer edge of the absorber 30 in the width direction W.

The absorbent article 10 has an excretory mouth facing region S1 that faces an excretory mouth (eg, vaginal mouth) of the wearer during use. The excretory mouth facing region S1 is a region disposed between the wearer's crotch, that is, the wearer's both legs, and corresponds to a region in which the absorbent body 30 is present. In addition, in the absorbent article 10 having the wings 40, the excretory facing region S1 is between the wings 40 and corresponds to a region in which the absorbent body 30 exists.

As shown in FIG. 2, the absorbent article 10 has adhesive portions 42, 52, and 70 provided on the non-skin side of the back sheet 22. The adhesive portions 42, 52, and 70 are regions provided with an adhesive for fixing the absorbent article 10 to the worn article. The adhesive portion includes a body adhesive portion 70, a wing adhesive portion 42, and a flap adhesive portion 52.

With the adhesive portions 42, 52, and 70 provided on the non-skin side of the back sheet 22, the absorbent article can be fixed to the wearer's clothing such as underpants. When the absorbent article is wound after use of the absorbent article 10, the tape member 60 for post-treatment can be fixed to the adhesive portions 42, 52, 70. Accordingly, the adhesive portions 42, 52, and 70 can be used both for fixing to a garment and for fixing a tape member for post-treatment.

The body adhesive portion 70 is provided in a region overlapping the absorbent body 30 in the thickness direction of the absorbent article. It is preferable that the main body adhesive portion 70 extends continuously or intermittently to the rear of the absorbent article 10 at least from the excretory port facing region S1. The body adhesive portion 70 extends in the front-rear direction (L), and may be provided in plurality at intervals in the width direction (W).

The wing adhesive portion 42 is provided on the wing 40. The wing 40 is folded to the wearer's worn article during use, and is attached to the non-skin surface side of the worn article by the wing adhesive portion 42. The flap adhesive portion 52 is provided on the hip flap 50.

The absorbent article 10 may have at least two bending lines extending along the width direction W. In the example shown in Figs. 1 and 2, the absorbent article 10 has three bending lines F1 to F3. These bending lines F1 to F3 are lines for folding the absorbent article during packaging of the absorbent article.

The absorbent article 10 further includes a tape member 60 disposed on the non-skin side of the back sheet 22 on the inner side than the outer periphery of the absorbent article 10. Accordingly, the tape member 60 is in a state covered by the absorbent article 10 when viewed from the skin surface side.

The tape member 60 is configured to be extendable so as to extend outward from the outer periphery of the absorbent article 10. Here, "elongation" includes elongation by "elastic deformation" or "plastic deformation". In this specification, the tape member 60 is preferably configured to be plastically deformable. As an example, the tape member 60 may be formed of an elastic sheet. In this case, by the wearer pulling the tape member 60, the tape member 60 extends outward from the outer edge of the absorbent article 10.

The tape member 60 is a tape for post-treatment, and may be extended enough to be attached to the main body adhesive portion 70 while the absorbent article 10 is rolled up. Further, the tape member 60 may be made of any material as long as it is a material that can be attached to the body adhesive portion 70. Preferably, the tape member 60 is made of a material that is easier to adhere to the body adhesive portion 70 than the top sheet 20.

The tape member 60 has a fixing portion 62 fixed to a body portion of the absorbent article 10, in particular a non-skin surface of the absorbent article 10. That is, the fixing part 62 of the tape member 60 is fixed to the back sheet 22. Further, the tape member 60 has a non-fixing portion 64 that is not fixed to the body portion, particularly the back sheet 22. The surface of the non-fixing portion 64 of the tape member 60 may not have an adhesive material.

When the absorbent article 10 is disposed, the tape member 60 may be configured to adhere to the body portion in a wound state with the skin-facing surface side of the absorbent article inwardly to maintain the wound state of the absorbent article 10 . The non-fixing portion 64 of the tape member 60 is configured to be fixed to the body portion. The configuration in which the non-fixing portion 64 is fixed to the body portion may be an adhesive portion of the body portion 20 or may be a fixing means such as an adhesive or a hook member provided on the tape member 60. Further, the fixing portion 62 of the tape member 60 may be configured to be fixed to the body portion. The configuration in which the fixing part 62 is fixed to the main body may be an adhesive part of the main body, or may be a fixing means such as an adhesive provided on the tape member 60 or a hook member.

An example of a specific configuration of the absorbent article of this embodiment is shown. The top sheet may be composed of an air-through nonwoven fabric (PE/PET) having a weight per unit area of 30 g/m 2. A second sheet may be provided between the top sheet and the absorbent core. The second sheet may be made of the same material as the top sheet. A top sheet may not be disposed outside the body portion in the width direction, but a side sheet may be disposed. The side sheet may be composed of an SMS nonwoven fabric (PP) having a weight per unit area of 13 g/m 2. The absorbent material of the absorbent core may be composed of softwood kraft pulp and a super absorbent polymer. The ratio of the weight of the superabsorbent polymer to the total weight of the absorbent material may be 10%. The weight per unit area of the absorbent core in the region including the excretory facing region S1 may be configured to be higher than the weight per unit area of the surrounding absorbent core. The weight per unit area of the absorbent core in the region including the excretory facing region S1 may be 950 g/m 2, and the weight per unit area of the surrounding absorbent core may be 300 g/m 2. The back sheet may be composed of a polyethylene film (non-ventilated type) having a weight per unit area of 23.5 g/m 2. The absorbent article may have a pressing portion formed by pressing the top sheet and the absorbent core in the thickness direction. The body adhesive portion may be made of a rubber-based hot melt adhesive. The weight per unit area of the body adhesive portion may be 27 g/m 2. Six main body adhesive portions may be provided at intervals in the width direction. The length of each body adhesive portion in the width direction may be 5 mm, and the length of each body adhesive portion in the front-rear direction may be 320 mm. The length in the front-rear direction of the absorbent article may be 420 mm, and the length in the width direction of the absorbent article may be 200 mm. The tape member for post-treatment may be composed of a polyethylene film having a weight per unit area of 35 g/m 2. The length of the tape member in the longitudinal direction may be 45 mm, and the length of the tape member in the short direction may be 25 mm. The tape member may be fixed to the main body by a rubber-based hot melt adhesive having a weight per unit area of 100 g/m 2. The adhesive may be applied in a range of 21 mm in width and 5 mm in length. The side of the tape member on the back sheet side may be printed. Pink urethane ink may be used for printing. In addition, the elongated tape member may be formed by laminating a polypropylene layer having a weight per unit area of 10 g/m2, a styrene rubber layer having a weight per unit area of 10 g/m2, and a polypropylene layer having a weight of 10 g/m2 per unit area. good.

At least the non-fixing portion 64 of the tape member 60 is configured to be extendable in the stretching direction. Since at least the non-fixing portion 64 of the tape member 60 is configured to be stretchable in the stretching direction, when fixing the wound absorbent article 10 with the tape member 60, the absorbent article ( 10) can be easily fixed (see Fig. 4).

The tape member 60 may be constituted by a single sheet that is not folded. Thereby, as compared with the tape member folded into a plurality of layers, the feeling of discomfort (deterioration of the touch) given to the wearer when the absorbent article is attached can be further suppressed.

While the absorbent article 10 is worn, a part of the tape member 60 may come into direct contact with the wearer's skin by curling the end of the sheet near the tape member 60 for post-treatment. Even in this case, since the adhesive material is not provided in the non-fixing portion 64 of the tape member 60, it is possible to prevent the tape member 60 from adhering to the wearer's skin.

Further, since the adhesive material is not provided in the non-fixing portion 64 of the tape member 60, the problem that the tape member adheres to the adhesive material of the tape member itself can be prevented during wearing.

Specifically, when the non-fixing portion 64 of the tape member 60 is stretched in the stretching direction, the non-fixing portion 64 of the tape member 60 is necked in in a direction orthogonal to the stretching direction. Here, when the non-fixing part 64 has an adhesive material, the non-fixing part 64 of the tape member 60 becomes easy to turn over in the width direction due to the difference in elasticity between the adhesive material and the tape member 60. When the non-fixing portion 64 of the tape member 60 is turned over, the tape member itself may stick to the adhesive material of the tape member 60. When the surface of the non-fixing portion 64 of the tape member 60 does not have an adhesive material, the tape member 60 itself can be prevented from sticking to the adhesive material of the tape member 60.

The tip end of the tape member 60 in the extending direction may be directed to the side opposite to the fixing part 62. In this case, when the tape member 60 is extended outward from the outer periphery of the absorbent article 10, a force acts on the fixing portion 62 of the tape member 60 only in the extending direction. Thereby, since the force applied to the fixing part 62 can be made as small as possible, the fixing strength of the tape member 60 can be maintained.

After using the absorbent article 10, the user may wind the absorbent article 10 in the front-rear direction L, and then extend the tape member 60 outward from the outer edge of the absorbent article 10 (see FIG. 4). ). During use, since the tape member 60 is disposed inside the outer edge of the absorbent article 10 on the non-skin side of the back sheet 22, body fluids such as menstrual blood are not adhered to the tape member 60. After the use of the absorbent article 10, the user attaches the tape member 60 extending outward to the adhesive portion 70 provided in a separate portion of the back sheet 22 to round the absorbent article 10. Horses can remain in state. Here, since a body fluid such as acupuncture points does not adhere to the tape member 60, a decrease in the bonding force between the tape member 60 and the adhesive portion 70 can be prevented, thereby making the absorbent article 10 small and round. Horses can be made easy to keep in state.

In addition, during the use of the absorbent article 10, the tape member 60 is provided on the non-skin surface side of the back sheet 22 and does not extend outside the outer edge of the absorbent article 10, so that the tape member ( 60) do not directly touch the wearer's skin. Therefore, it is possible to reduce discomfort and discomfort during use.

The tape member 60 is in the width direction (W) within a range of 1/3 of the length of the absorbent article 10 in the front-rear direction L from the rear edge E2 of the absorbent article 10 It is preferable that it is provided in the central part of the absorbent article 10 in Thereby, the tape member 60 is disposed at a position corresponding to a crack (blunt heat) of the buttocks of the wearer. In this way, since the tape member 60 is disposed in the dent in the wearer's skin, the feeling of incongruity in wearing caused by the tape member 60 can be reduced.

It is more preferable that the tape member 60 is provided within a range of 15% of the length of the absorbent article 10 in the front-rear direction L from the rear edge E2 of the absorbent article 10. Thereby, the tape member 60 is disposed at a position corresponding to a crack (blunt heat) of the buttocks of the wearer. In this way, since the tape member 60 is disposed in the dent in the wearer's skin, the feeling of incongruity in wearing caused by the tape member 60 can be reduced.

It is preferable that the tape member 60 is configured to be extendable to the rear side than the rear edge of the absorbent article 10. It is more preferable that the tape member 60 is provided on the rear side of the bending line F1 to F3 at the rearmost side of the bending line F3. About 80% of users start winding the absorbent article 10 after use from the front side. Since the tape member 60 is configured to be extendable to the rear side than the rear edge of the absorbent article 10, many users extend the tape member 60 along the winding direction so that the tape member 60 It can be attached to the adhesive portion 70.

Preferably, the main body adhesive portion 70 is provided on an imaginary line extending the tape member 60 in the front-rear direction L. More preferably, the main body adhesive portion 70 is provided on an imaginary line extending the tape member 60 in a direction opposite to the stretching direction. Thereby, when the tape member 60 is extended rearward than the rear edge E2 of the absorbent article, and the tape member 60 is straight along the wound absorbent article 10, the tape member 60 is attached to the body adhesive portion. (70) is attached. Accordingly, the user can easily maintain the absorbent article 10 in a rolled state without stretching the tape member 60 obliquely toward the position of the body adhesive portion 70.

It is preferable that the width of the body adhesive portion 70 provided on the virtual line in a direction orthogonal to the stretching direction is greater than the width in a direction orthogonal to the stretching direction of the tape member 60. Accordingly, when the tape member 60 is stretched in the stretching direction while the absorbent article 10 is wound, even if the tape member 60 is not straight and is slightly bent and pulled out, the unfixed portion of the tape member 60 ( 64) is located at the point of the body adhesive portion 70. Therefore, the user can easily adhere the tape member to the adhesive portion.

A plurality of body adhesive portions 70 may be provided at intervals in the width direction (W). In this case, the width W1 of the tape member 60 in the width direction W is preferably larger than the distance W2 between the main body adhesive portions 70 in the width direction W. Thereby, it is possible to prevent that the main body adhesive portion 70 does not exist at the end of the user pulling out the tape member 60. Accordingly, the user can easily attach the tape member 60 to the adhesive portion 70.

It is preferable that the surface of the tape member 60 on the side of contact with the body adhesive portion 70 is smooth. For example, the KES surface roughness of the surface of the tape member 60 on the side to be brought into contact with the body adhesive portion 70 may be in the range of about 0.5 to 1.5. Since the surface of the tape member 60 on the side of contact with the body adhesive portion 70 is smooth, the contact area of the tape member 60 with the body adhesive portion 70 can be increased. Thereby, when the tape member 60 is adhered to the body adhesive portion 70 while the absorbent article 10 is rolled up, the tape member 60 can be prevented from falling off the body adhesive portion 70. I can.

In addition, the surface roughness of KES can be measured using, for example, a surface testing apparatus (KES-FB4-AUTO-A) manufactured by Kato Tekko Co., Ltd. Specifically, first, a tape member (test piece) as a measurement object is placed on a measurement table of a surface testing apparatus. Then, while the test piece is fixed so as not to cause wrinkles on the test piece, the measurement terminal is moved in the measurement direction while bringing the measurement terminal of the surface test apparatus into contact with the test piece. Further, the test piece may be cut to a size of 100 mm in length in the measurement direction and 50 mm in width in a direction orthogonal to the measurement direction. The surface roughness of the KES described above is defined by the value of the roughness (SMD) obtained by this measurement.

Both the back sheet 22 and the tape member 60 may be made of a film, for example a synthetic resin film. In addition, it is preferable that at least one, preferably both of the surface of the tape member 60 in contact with the back sheet 22 and the surface of the back sheet 22 in contact with the tape member 60 are not treated with antistatic treatment. .

Further, the tape member 60 may be formed of a film that does not contain an antistatic agent. Thereby, the tape member 60 becomes easy to stick to the body part by static electricity. When the tape member 60 adheres to the main body, curling of the tape member 60 while the absorbent article 10 is worn can be suppressed.

It is preferable that at least a part of the fixing portion 62 of the tape member 60 overlaps the absorber 30 in the thickness direction. The region in which the absorber 30 is present is a region of the absorbent article 10 with particularly high rigidity. Since the fixing portion 62 of the tape member 60 overlaps the absorbent body 30 in the thickness direction, when the absorbent article 10 is wound, the fixing portion of the tape member 60 located in a region with high rigidity ( 62) is reliably curved together with the absorbent article 10. In this way, since the fixing portion 62 of the tape member 60 is reliably curved, the free end of the tape member 60 is more likely to float from the back sheet 22. Accordingly, the user can more easily hold and operate the tape member 60 by hand.

The bending stiffness of the tape member 60 is lower than that of the portion where the top sheet 20, the back sheet 22, and the absorber 30 are overlapped. Here, during wearing of the absorbent article, a part of the tape member 60 may directly contact the wearer's skin by curling the end of the sheet near the tape member for post-treatment. Here, the bending stiffness of the tape member 60 is lower than the bending stiffness of the portion where the top sheet 20, the back sheet 22, and the absorber 30 are overlapped, so that the wearer is the top sheet 20 and the back sheet. It is more difficult to feel the sense of incongruity than the overlapping portion 22 and the absorber 30.

It is preferable that the bending rigidity of the tape member 60 is lower than that of the absorber 30. Thereby, the feeling of discomfort that the tape member 60 gives to the wearer can be further suppressed. The bending rigidity of the tape member 60 may be preferably 1/10 or less, and more preferably 1/30 or less of the bending rigidity of the absorber 30.

Further, the tape member 60 is provided on the non-skin surface side of the back sheet 22, and it is more preferable that the bending rigidity of the tape member 60 is lower than that of the back sheet 22.

In particular, since the bending stiffness of the tape member 60 provided on the non-skin side of the back sheet 22 is lower than the bending stiffness of the back sheet 22, the absorbent article 10 and the skin rubbed by the operation while wearing. Even so, it is difficult for the wearer to recognize the feeling that the tape member 60 is present. Therefore, the feeling of discomfort given to the wearer can be further suppressed.

That is, since the tape member 60 is covered with the back sheet 22 having higher rigidity, the wearer hardly feels the rigidity of the tape member 60 during wearing.

The inventor of the present invention measured the rigidity of the tape member for post-treatment of various absorbent articles distributed in the market, but the bending rigidity of the tape member 60 was found to be the back sheet 22, the absorber 30, and the top sheet ( 20), and the back sheet 22 and the absorber 30 were not found to be lower than the respective rigidity of the overlapping portion.

In addition, the rigidity of each of the portions where the tape member 60, the back sheet 22, the absorber 30, the top sheet 20, the back sheet 22 and the absorber 30 are overlapped is the standard JIS P- It is measured by the Taber method defined by 8125.

For example, first, a specimen having a width of 38.1 mm and a length of 70 mm is taken from a member (sheet) to be measured. Next, the thickness of the test piece is measured with a thickness meter (eg, 44 mmφ 3 g/m 2 manufactured by PEACOCK). Next, the test piece is installed in a Taber stiffness tester manufactured by Yasuda Seiki. Next, put the test piece between the rollers of the Taber stiffness tester, and insert the handle gap according to the thickness of the test piece. Also, align the top of the test piece with the top of the handle. Adjust the distance between the roller and the test piece to about 0.5 mm so as not to press the test piece. Taber stiffness tester Rotate the specimen bending device, stop the rotation of the bending device at the point where the angle line representing 15 degrees of the specimen bending device matches the guideline of the load pendulum. Read the load scale. The load pendulum is immediately rotated in the opposite direction, and the load scale is similarly read, and the average of the left and right load scales is obtained. In addition, an auxiliary weight is arbitrarily selected so that the indicated load scale falls within the range of 15 to 85% of the maximum scale. Then, the bending stiffness (strength strength (g·cm)) of the test piece is calculated by an equation of “strength strength (g·cm) = average value of load scale × 10 × value of weight”.

The width of the fixing portion 62 in the direction orthogonal to the stretching direction is preferably shorter than the width W1 of the tape member 60 in the direction orthogonal to the stretching direction. As a result, when the non-fixing portion 64 of the tape member 60 is pulled, a strong force is applied in the extending direction to the point of the width of the fixing portion 62 shorter than the entire width of the tape member 60. Accordingly, the tensile force required to elongate the non-fixing portion 64 of the tape member 60 can be reduced.

It is more preferable that the width of the fixing portion 62 in the direction orthogonal to the stretching direction is not less than half of the width W1 of the tape member 60 in the direction orthogonal to the stretching direction. By increasing the width of the fixing portion 62 in the direction orthogonal to the stretching direction, curling of the non-fixing portion 64 of the tape member 60 in the width direction W can be suppressed. Thereby, it becomes easy to maintain the state where the non-fixing part 64 of the tape member 60 is flatly wide, and it becomes easy to fix the absorbent article 10 in a rolled state by the tape member 60.

The non-fixing portion 64 of the tape member 60 may be provided at a position away from the absorber 30. For example, the non-fixing portion 64 of the tape member 60 is preferably provided at a position 50 mm or more away from the absorber 30. As the absorber 30 absorbs a liquid such as the wearer's body fluid, the back sheet 22 overlapping with the absorber 30 in the thickness direction is twisted, and wrinkles occur in the back sheet 22. For example, if the tape member 60 is present in such a wrinkled location, a space is partially created between the tape member 60 and the back sheet 22 due to the occurrence of wrinkles. As a result, the tape member 60 cannot be brought into close contact with the back sheet 22, and the tape member 60 rubs against the back sheet 22 while the absorbent article 10 is being worn, making it easier to move. . As a result, the tape member 60 is rolled or bent in the width direction, making it difficult to use the tape member 60. In this embodiment, the non-fixing portion 64 of the tape member 60 is located at a position away from the absorber 30 in the thickness direction, that is, a position where wrinkles are unlikely to occur in the back sheet 22 even if the absorber 30 absorbs liquid. There is. Accordingly, it is possible to suppress the tape member 60 from being curled or bent in the width direction while wearing.

The absorber 30 may be provided with an emboss (compression portion) of a predetermined pattern. Further, the absorber 30 may have a low weight per unit area having a weight per unit area lower than the weight per unit area of the surrounding absorber 30. In this case, it is preferable that the tape member 60 overlaps in the thickness direction with an emboss formed on the absorbent body 30 or a low unit weight area provided on the absorbent body 30. When the tape member 60 overlaps in the thickness direction with an emboss formed on the absorbent body 30 or a low unit area weight area provided on the absorber 30, the tape member 60 and the back sheet 22 (absorber 30) ) It is easy to have a gap between them. Therefore, when the absorbent article 10 is wound, the tape member 60 is more likely to float from the back sheet 22, and the user can more easily hold the tape member 60 by hand and operate it.

It is preferable that at least the region of the tape member 60 excluding the fixing portion 62 is provided at a position not overlapping with the wing adhesive portion 42, the flap adhesive portion 52, and the body adhesive portion 70. Thereby, when the absorbent article 10 is wound, the tape member 60 is liable to float from the back sheet 22. Accordingly, the user can more easily hold and operate the tape member 60 by hand.

The wing adhesive portion 42, the flap adhesive portion 52, and the body adhesive portion 70 move the non-fixed portion 64 not accompanied by stretching of the non-fixed portion 64 in the unfolded state of the absorbent article 10 It is preferable that it is provided outside the range (region S of FIG. 2). That is, the tape member 60 does not adhere to the wing adhesive portion 42, the flap adhesive portion 52, or the body adhesive portion 70 in a state in which it is not stretched. Thereby, it is possible to prevent the tape member 60 from adhering to the wing adhesive portion 42, the flap adhesive portion 52, and the body adhesive portion 70 while the absorbent article 10 is being worn.

Further, an emboss may be formed along the outer periphery of the absorbent article 10. This emboss may be formed on the top sheet 20 and the back sheet 22, for example. In this case, part of the emboss may also be formed on the tape member 60.

As mentioned above, although this invention was demonstrated in detail using the above-mentioned embodiment, it is clear to those skilled in the art that this invention is not limited to the embodiment described in this specification. The present invention can be implemented as a modified and changed aspect without departing from the spirit and scope of the present invention determined by the description of the claims. Accordingly, the description of the present specification is for the purpose of illustrative description and does not have any limiting meaning with respect to the present invention.

The entire contents of Japanese Patent Application No. 2017-252488 for which it applied on December 27, 2017 is incorporated into this specification by reference.

It is possible to provide an absorbent article provided with a tape member capable of suppressing discomfort.

10: absorbent article
20: surface sheet
22: back sheet
30: absorber
40: wing
42: wing adhesive part
50: hip flap
52: flap adhesive portion
60: tape member
62: fixed part
64: non-government
70: body adhesive part
S1: area opposite the excretory tract
L: forward and backward direction
W: width direction

Claims (10)

Forward and backward directions,
A width direction orthogonal to the front-rear direction, and
A surface sheet facing the wearer's skin,
A back sheet facing away from the wearer's skin,
A body portion including an absorber between the top sheet and the back sheet,
It has a tape member for post-treatment fixed to the main body,
The absorbent article having a bending stiffness of the tape member lower than that of a portion where the top sheet, the back sheet, and the absorber are overlapped. The absorbent article according to claim 1, wherein the bending stiffness of the tape member is lower than that of the absorber. The method according to claim 1 or 2, wherein the tape member is provided on the non-skin side of the back sheet,
The absorbent article having a lower bending stiffness of the tape member than that of the back sheet. The method according to claim 1 or 2,
The tape member
A fixing part fixed to the main body,
Non-fixed part that is not fixed to the main body and does not have an adhesive material
An absorbent article having. The absorbent article according to claim 4, wherein at least the non-fixing portion of the tape member is configured to be stretchable in a stretching direction. The absorbent article according to claim 1 or 2, wherein the tape member is formed of a single sheet that is not folded. The absorbent article according to claim 1 or 2, wherein the tape member is formed of a film that does not contain an antistatic agent. The absorbent article according to claim 1 or 2, having an adhesive portion provided on the non-skin side of the back sheet. The method according to claim 1 or 2, wherein the absorbent article is configured to be fixed to the wearer's underwear when in use,
The tape member is provided in a central portion of the absorbent article in the width direction within a range of a length of 1/3 of the length of the absorbent article in the front-rear direction from the rear edge of the absorbent article. The absorbent article according to claim 9, wherein the tape member is provided within a range of 15% of the length of the absorbent article in the front-rear direction from the rear edge of the absorbent article.

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