JP3919414B2 - Method for manufacturing absorbent article - Google Patents

Description

【００３５】
以上、本発明の吸収性物品の製造方法を、その好ましい実施形態について説明したが、本発明の吸収性物品の製造方法は、前述した第１〜３実施態様に制限されることなく、本発明の趣旨を逸脱しない限り適宜変更が可能である。
【００３６】
本発明の吸収性物品の製造方法の好ましい実施態様として、生理用ナプキンの製造方法を説明したが、本発明は、生理用ナプキンに限らず、使い捨ておむつ等その他吸収性物品を製造する場合に適用することができる。
【００３７】
押圧ロールは、粘着又は接着させる部材の被押圧面の形状に応じて変形回復し得るものを適宜用いることができる。
押圧ロールを形成する部材は、発泡ウレタンに限らず、その他の軟質の弾性材でもよい。この場合、必ずしも、押圧ロール全体が軟質の弾性材で構成されている必要はなく、少なくとも押圧ロールの表面が軟質の弾性部材で形成されていればよい。
また、本発明の吸収性物品の製造方法におけるシートとしては、包装フィルムに限らず、剥離紙でもよい。
【００３８】
また、前記第１〜第３実施態様の生理用ナプキンの製造方法において、ホットメルト系粘着剤４は、コンベア６の搬送方向Ｐの直交方向に延びるように包装フィルム３又は防漏層２に３条又は２条塗布されているが、ホットメルト系粘着剤４は、コンベア６の搬送方向Ｐに延びるように包装フィルム３又は防漏層２に複数条塗布されていてもよい。
また、ホットメルト系粘着剤の条数は、２条又は３条に限らず、４条以上にしてもよい。更に、ホットメルト系粘着剤が、複数の条ではない塗工パターンとなされていてもよい。
前記第１及び第２実施態様の生理用ナプキンの製造方法において、生理用ナプキン１０は、その長手方向と直交する方向Ｘ（図４参照）に搬送されており、また、前記第３実施態様の生理用ナプキンの製造方法において、吸収層１は、その長手方向Ｙ（図４参照）に搬送されているが、本発明においては、搬送時における生理用ナプキン又は吸収層の向きを、適宜変更することができる。
【００４０】
【発明の効果】
本発明によれば、防漏層の表面にシートをホットメルト系粘着剤を介して粘着させる場合において、ホットメルト系粘着剤を防漏層の表面に充分な貼着力をもって転着させることができる。また、本発明によれば、吸収層と防漏層とをホットメルト系粘着剤を介して積層する場合において、吸収層と防漏層とをホットメルト系粘着剤を介して充分な貼着力をもって積層することができる。
【図面の簡単な説明】
【図１】 本発明の吸収性物品の製造方法の第１実施態様を示す概略側面図である。
【図２】 本発明の吸収性物品の製造方法の第２実施態様を示す概略側面図である。
【図３】 本発明の吸収性物品の製造方法の第３実施態様を示す概略側面図である。
【図４】 本発明の吸収性物品の製造方法の第１実施態様及び第２実施態様により得られた、包装フィルムの粘着された生理用ナプキンを示す平面図である。
【図５】 本発明の吸収性物品の製造方法の第１実施態様及び第２実施態様により得られた、所定の包装のなされた生理用ナプキンを示す斜視図である。
【符号の説明】
１ 吸収層
２ 防漏層
２ａ 吸収層対向面
２ｂ 吸収層非対向面
３ 包装フィルム（シート）
３ａ 防漏層対向面
３ｂ 防漏層非対向面
４、４ａ、４ｂ、４ｃ ホットメルト系粘着剤
５ 押圧ロール
５ａ 押圧面
６ コンベア
６ａ 搬送ベルト
７ 方向変換ロール
１０ 生理用ナプキン（吸収性物品）[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for manufacturing an absorbent article, and more particularly to a method for manufacturing an absorbent article having a step of sticking or laminating two members via a hot-melt adhesive.
[0002]
[Prior art and problems to be solved by the invention]
Conventionally, in a method for manufacturing an absorbent article such as a sanitary napkin, a step of adhering or adhering two members via a hot-melt adhesive is used.
For example, an adhesive layer was formed on the leak-proof layer of a sanitary napkin with a hot-melt adhesive to prevent displacement during underwear attachment, and the leak-proof layer was peeled off via the hot-melt adhesive. The above-described steps are also used in a method for producing a sanitary napkin that is adhered to a packaging film and protects the leak-proof layer with the packaging film.
[0003]
More specifically, this adhesion step is performed by adhering a packaging film coated with a hot-melt adhesive on the surface of the sanitary napkin through the hot-melt adhesive, thereby providing a hot-melt adhesive. The agent is transferred to the leak-proof layer. After the adhesion step, the sanitary napkin is subjected to predetermined packaging in a state where the packaging film is adhered to the leak-proof layer.
The sanitary napkin having a predetermined packaging is used after the packaging film is peeled off. At that time, the hot melt adhesive is in a state of being transferred to the leak-proof layer.
[0004]
When the packaging film is peeled from the sanitary napkin thus obtained, the hot-melt adhesive may not be transferred to the leak-proof layer but may remain attached to the packaging film. Or, even if the hot-melt adhesive is transferred to the surface of the leak-proof layer, the adhesive force between the hot-melt adhesive and the leak-proof layer is not sufficient, and the desired slip prevention effect cannot be obtained. In some cases.
[0005]
According to the conventional manufacturing method, even if various manufacturing conditions (such as pressing conditions of the pressing roll, the temperature of the gun for applying the hot melt adhesive or the temperature of the hot melt adhesive itself) are adjusted, The system pressure-sensitive adhesive could not be adhered to the surface of the leak-proof layer with sufficient adhesion.
[0006]
Recently, there is a sanitary napkin provided with an absorbent layer having a shape (thickness unevenness) in which the thickness of the central portion is thick and the thickness of both sides is thin in order to improve the fit when worn. In such a sanitary napkin, the above problem is particularly noticeable.
[0007]
Furthermore, when manufacturing an absorbent article (a sanitary napkin, a disposable diaper or the like) in which an absorbent layer and a leak-proof layer are laminated, a sheet that forms the leak-proof layer on the surface of the absorbent layer is pressed by a pressing roll. Thus, the same problem occurs when the absorbent layer and the leak-proof layer are laminated via a hot-melt adhesive.
[0008]
Accordingly, the first object of the present invention is to provide a hot melt adhesive sufficiently on the surface of the leak-proof layer when the sheet (packaging film) is adhered to the surface of the leak-proof layer via the hot-melt adhesive. An object of the present invention is to provide a method for manufacturing an absorbent article that can be transferred with a sufficient sticking force.
In addition, the second object of the present invention is that when the absorbent layer and the leak-proof layer are laminated via a hot-melt adhesive, the absorbent layer and the leak-proof layer are sufficient via the hot-melt adhesive. It is providing the manufacturing method of the absorbent article which can be laminated | stacked with sticking force.
[0009]
[Means for Solving the Problems]
The invention according to claim 1 is a method of manufacturing an absorbent article having unevenness in the thickness direction by forming a thick central portion to form a raised portion, and at least two members are provided in a plurality of regions. A surface hardness of 2 that includes a pressure-sensitive adhesive or bonding step that is pressure-bonded or bonded via an applied hot melt pressure-sensitive adhesive, and that can be deformed and recovered in accordance with the shape of the pressed surface of the member in the pressure-sensitive adhesive or bonding step. The first object and the second object are achieved by providing a method for producing an absorbent article using a pressure roll of 10 to 10 (JIS A) .
The first object is, in particular, the leak-proof layer and the sheet of the absorbent article in which the two members to be sticked or bonded are provided with an absorbent layer and a leak-proof layer, and the sticking or bonding step. However, by pressing the sheet against the leak-proof layer with the pressing roll, the sheet is adhered or adhered to the leak-proof layer via the hot-melt pressure-sensitive adhesive. This is achieved by the method (the invention according to claim 2).
In addition, the second object is, in particular, a sheet in which the two members to be adhered or adhered form an absorbent layer that forms an absorbent article and a leak-proof layer, and the adhesion or adhesion step includes the absorption. The manufacturing method of the absorbent article which is a process of laminating | stacking this absorption layer and this leak-proof layer through the said hot-melt-type adhesive by pressing this sheet | seat on the layer with the said press roll (Claim 3). To achieve this.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
First, as a preferable embodiment of a manufacturing apparatus used in one embodiment of the method for manufacturing an absorbent article of the present invention, a sanitary napkin manufacturing apparatus (hereinafter referred to as the sanitary napkin manufacturing apparatus of the first embodiment), A description will be given with reference to FIG.
[0011]
As shown in FIG. 1, the sanitary napkin manufacturing apparatus according to the first embodiment horizontally disposes a sanitary napkin (absorbent article) 10 having an absorbent layer 1 and a leak-proof layer 2 at a predetermined interval. The conveyor 6 transported in the direction P) and the belt-like packaging film (sheet) 3 are brought close to the surface of the leak-proof layer 2 of the absorbent article 10 placed on the transport belt 6a of the conveyor 6 and transported. A film transport device for transporting in the direction P, and an adhesive application device (not shown) for applying the hot-melt adhesive 4 to the surface 3a of the packaging film 3 that faces the leak-proof layer 2 (surface facing the leak-proof layer); A pressure roll 5 that presses the packaging film 3 toward the sanitary napkin 10 placed on the conveyance belt 6a from the non-leakage layer non-opposing surface (opposite surface of the anti-leakage layer facing surface 3a) 3b. It has.
[0012]
Here, the said press roll 5 which can be deform | transformed and recovered according to the shape of the to-be-pressed surface of the member to adhere | attach or adhere | attach is formed with the soft elastic material (foaming urethane), and a roll rotation apparatus (not shown) is used. It rotates with an axis that is horizontal and orthogonal to the conveyance direction P as a rotation axis. Moreover, in the state which is not pressing the press roll 5, the clearance between the press surface 5a of the press roll 5 and the conveyance belt 6a of the conveyor 6 is 0 to 5 mm.
In the conveyor 6, a vacuum 6b is provided below the conveyor belt 6a, and the sanitary napkin 10 placed on the conveyor belt 6a is sucked downward by the vacuum force of the vacuum 6b to prevent displacement. However, it can be conveyed in a predetermined direction.
[0013]
Further, the hot melt adhesive 4 is applied to the leakage prevention layer facing surface 3a of the packaging film 3 by the adhesive application device in three regions (from the downstream side of the transport direction 4a 4b and 4c) are applied at predetermined intervals. At this time, the area where the hot melt pressure-sensitive adhesive 4 is applied is substantially the same as the area of the leak-proof layer 2 of the sanitary napkin 10, and the position of the hot-melt pressure-sensitive adhesive 4 and the leak-proof layer 2 are the same. The position of is adapted.
[0014]
According to the sanitary napkin manufacturing apparatus of the first embodiment configured as described above, the leak-proof layer 2 of the sanitary napkin 10 including the absorbent layer 1 and the leak-proof layer 2 as shown in FIG. The packaging film 3 can be adhered to the surface of the leak-proof layer 2 via the hot-melt adhesive 4 by pressing the packaging film 3 on the surface of the packaging film 3 with the pressing roll 5.
[0015]
Next, a preferred embodiment of the method for manufacturing an absorbent article of the present invention using the sanitary napkin manufacturing apparatus of the first embodiment described above (hereinafter referred to as the method of manufacturing the sanitary napkin of the first embodiment). explain.
The method for producing a sanitary napkin according to the first embodiment includes a packaging film formed on the surface of the leak-proof layer 2 of the sanitary napkin (absorbent article) 10 having the absorbent layer 1 and the leak-proof layer 2 by a pressing roll 5. By pressing 3 (sheet), the packaging film (sheet) 3 is adhered to the surface of the leak-proof layer 2 via the hot-melt adhesive 4.
[0016]
The sanitary napkin 10 has irregularities in the thickness direction of the absorbent layer 1, and the thickness of the central portion 1a that is a raised portion with respect to the skin contact surface of the user is thicker than the thickness of both side portions 1b. It is formed (see FIG. 4). In addition, in FIG. 1, illustration about the unevenness | corrugation of the absorption layer 1 is abbreviate | omitted.
The hardness of the surface of the pressing roll 5, deformation recovery properties of the press rolls, and from the viewpoint of deformability required to fit the pressed product, is set to 2-10.
“JIS A” indicating the hardness of the surface of the pressing roll 5 is durometer hardness defined in “JIS K6253”.
[0017]
The packaging film 3 is preferably made of polyolefin or the like as the material, and preferably has a thickness of 0.01 to 0.09 mm.
The hot melt pressure-sensitive adhesive 4 is preferably an SBS (styrene-butadiene-styrene copolymer) system. Further, the material of the leak-proof layer 2 is preferably polyolefin.
[0018]
The manufacturing method of the sanitary napkin of the first embodiment will be described in further detail in the order of steps. First, the sanitary napkin 10 is placed on the conveyor belt 6a of the conveyor 6 with the direction X (see FIG. 4) orthogonal to the longitudinal direction thereof directed in the conveyance direction P of the conveyor 6 and the leak-proof layer 2 facing upward. Are transported continuously in the transport direction P.
Further, three strips of hot-melt adhesives 4a, 4b, and 4c are previously applied to the leak-proof layer facing surface 3a of the belt-shaped packaging film 3 at predetermined intervals by the adhesive application device. Thereafter, the belt-shaped packaging film 3 is conveyed by the direction conversion roll 7 with the conveyance direction changed from the downward direction to the conveyance direction P, and the leakage prevention layer facing surface 3a is directed downward.
In this manner, the packaging film 3 and the sanitary napkin 10 are both 0.001 to 2 (m / s) at the leakage preventing layer facing surface 3a of the packaging film 3 and the surface of the leakage preventing layer 2 facing each other. Transport in the transport direction P at the transport speed.
[0019]
And the packaging film 3 is made to adhere to the surface of the leak-proof layer 2 via hot-melt-type adhesive 4a * 4b * 4c by pressing the packaging film 3 from the upper direction with the press roll 5. FIG. Thus, the sanitary napkin 10 in which the packaging film 3 is adhered to the surface of the leak-proof layer 2 through the hot melt adhesive 4 is obtained.
[0020]
As shown in FIG. 4, the packaging film 3 is folded together with the packaging film 3 so that the packaging film 3 is divided into approximately three equal parts along the lines AA and BB, and the edge of the packaging film 3 is fastened to the fastening tape 8. Then, both side edges 3c of the packaging film 3 are further sealed by a known sealing means such as heat sealing. Thereafter, the folded band-shaped packaging film 3 is cut at a predetermined position between the sanitary napkins 10 to obtain a sanitary napkin 10 with predetermined packaging as shown in FIG.
[0021]
In the method for manufacturing a sanitary napkin according to the first embodiment, the pressing roll 5 is made of urethane foam, which is a soft elastic material, and the pressed surface of the members (the surface of the leak-proof layer 2 and the packaging film 3) to be adhered. Therefore, the pressing surface 5a of the pressing roll 5 is deformed according to the shape (unevenness) of the sanitary napkin 10. Therefore, the entire area of the packaging film 3 to which the hot melt pressure-sensitive adhesive 4 is applied can be uniformly pressed by the pressing roll 5 onto the surface of the leak-proof layer 2.
[0022]
Therefore, according to the method for manufacturing the sanitary napkin of the first embodiment, the hot melt adhesives 4a, 4b, and 4c are transferred to the surface of the leak-proof layer 2 with sufficient adhesive strength. The film 3 is adhered to the surface of the leak-proof layer 2. And in the sanitary napkin 10 in which the packaging film 3 manufactured in this way was adhered to the surface of the leak-proof layer 2, the hot-melt adhesive 4 was reliably transferred to the leak-proof layer 2. When the packaging film 3 is peeled from the sanitary napkin 10 during use, the hot-melt adhesive 4 does not remain on the packaging film 3.
[0023]
Next, another embodiment of the method for producing an absorbent article of the present invention (hereinafter referred to as the method for producing a sanitary napkin of the second embodiment) will be described with reference to FIG.
As shown in FIG. 2, the method for manufacturing the sanitary napkin of the second embodiment basically has the same configuration as the method for manufacturing the sanitary napkin of the first embodiment described above (see FIG. 1). The only difference is that the hot-melt pressure-sensitive adhesive 4 is applied to the leak-proof layer 2 side. About another structure, since it is the same as that of the manufacturing method of the sanitary napkin of a 1st embodiment, and the same code | symbol is attached | subjected to the same site | part, the description is abbreviate | omitted.
[0024]
Since the manufacturing method of the sanitary napkin of the second embodiment has the same configuration as the manufacturing method of the sanitary napkin of the first embodiment, the manufacturing method of the sanitary napkin of the second embodiment is used. For example, the same effect as the manufacturing method of the sanitary napkin of the first embodiment can be obtained.
[0025]
As a preferable embodiment of the manufacturing apparatus used in one embodiment of the method for manufacturing an absorbent article of the present invention, a sanitary napkin manufacturing apparatus (hereinafter referred to as the sanitary napkin manufacturing apparatus of the third embodiment) is shown in FIG. Will be described with reference to FIG.
As shown in FIG. 3, the sanitary napkin manufacturing apparatus according to the third embodiment includes a conveyor 6 that conveys the absorbent layer 1 in the horizontal direction (conveying direction P), and a sheet that forms the strip-shaped leak-proof layer 2. A napkin conveying device that conveys in the conveying direction P in proximity to the surface of the absorbent layer 1 placed on the conveying belt 6a of the conveyor 6, and a surface that faces the absorbent layer 1 in the leak-proof layer 2 (absorbing layer facing) Surface) 2a, an adhesive application device (not shown) for applying the hot melt adhesive 4 and the leak-proof layer 2 from the absorption layer non-facing surface 2b (opposite surface of the absorbing layer facing surface 2a) side A pressing roll 5 is provided for pressing toward the absorbent layer 1 placed on the conveyor belt 6a.
[0026]
Here, the sanitary napkin 10, the pressing roll 5, the packaging film 3, the hot melt pressure-sensitive adhesive 4, the leak-proof layer 2 and the like are the same as those in the sanitary napkin manufacturing apparatus of the first embodiment. Can do.
[0027]
Further, the hot melt pressure-sensitive adhesive 4 is applied to the absorbent layer facing surface 2a of the leak-proof layer 2 by the above-mentioned pressure-sensitive adhesive application device in two regions (4a. 4b) is applied at predetermined intervals. At this time, the region where the hot-melt pressure-sensitive adhesive 4 is applied is substantially the same as the region of the absorbent layer 1 of the sanitary napkin 10, and the position of the hot-melt pressure-sensitive adhesive 4 and the region of the absorbent layer 1 The position is adapted.
[0028]
According to the sanitary napkin manufacturing apparatus of the third embodiment configured as described above, the sheet for forming the leak-proof layer 2 is pressed on the surface of the absorbent layer 1 by the pressing roll 5 as shown in FIG. By doing so, the absorption layer 1 and the leak-proof layer 2 can be laminated via the hot-melt adhesive 4.
[0029]
Next, a preferred embodiment of the method for producing an absorbent article of the present invention using the sanitary napkin production apparatus of the third embodiment described above (hereinafter referred to as the method for producing a sanitary napkin of the third embodiment). explain.
The manufacturing method of the sanitary napkin of 3rd embodiment presses the sheet | seat which forms the leak-proof layer 2 on the surface of the absorption layer 1 which forms the sanitary napkin (absorbent article) 10 with the said press roll 5. Thus, the absorbent layer 1 and the leak-proof layer 2 are laminated via a hot-melt adhesive 4.
[0030]
Here, the absorption layer 1 has unevenness in the thickness direction, and the thickness of the central portion is formed to be greater than the thickness of both side portions. In addition, in FIG. 3, illustration of the unevenness | corrugation of the absorption layer 1 is abbreviate | omitted.
[0031]
The manufacturing method of the sanitary napkin of the third embodiment will be described in further detail in the order of steps. First, the absorbent layer 1 is placed at a predetermined interval on the conveyor belt 6a of the conveyor 6 with the longitudinal direction Y (see FIG. 4) directed in the conveyance direction P of the conveyor 6 and the convex center portion directed downward. It is placed open and continuously conveyed in the conveying direction P.
In addition, two hot-melt pressure-sensitive adhesives 4a and 4b are previously applied to the absorbing layer facing surface 2a of the sheet forming the strip-shaped leak-proof layer 2 with a predetermined interval by the pressure-sensitive adhesive coating device. Then, the sheet | seat which forms the strip | belt-shaped leak-proof layer 2 is conveyed by the conveyance direction P from the downward direction by the direction conversion roll 7, and the absorption layer opposing surface 2a is faced downward.
[0032]
And the absorption layer 1 and the leak-proof layer 2 are laminated | stacked via hot-melt-type adhesive 4a * 4b by pressing the leak-proof layer 2 from upper direction with the press roll 5. FIG. In this way, a sanitary napkin 10 in which the absorbent layer 1 and the leak-proof layer 2 are laminated with the hot melt adhesive 4 is obtained.
[0033]
Thereafter, both ends in the longitudinal direction of the sanitary napkin 10 are bonded by heat sealing, and the sheet forming the strip-shaped leak-proof layer 2 is cut at a predetermined position between the absorbent layers 1. Packaging is made.
According to the method for manufacturing a sanitary napkin of the third embodiment, the entire area where the hot melt pressure-sensitive adhesive 4 is applied in the leak-proof layer 2 can be evenly pressed onto the surface of the absorbent layer 1 by the pressing roll 5. Therefore, the absorbent layer 1 and the leak-proof layer 2 can be laminated with a sufficient adhesive force via the hot melt adhesive 4.
[0034]
[Test example]
By pressing the packaging film 3 against the surface of the leak-proof layer 2 of the sanitary napkin 10 with the pressing roll 5 under the following manufacturing conditions in accordance with the method for manufacturing the sanitary napkin of the first embodiment (see FIG. 1). The sanitary napkin 10 to which the packaging film 3 was adhered was obtained by adhering the packaging film 3 to the surface of the leak-proof layer 2 via the hot melt adhesive 4.
Adhesive force evaluation test of the hot melt adhesive 4 on the obtained sanitary napkin 10 (when the packaging film 3 was peeled off from the sanitary napkin 10, the hot melt adhesive 4 was transferred to the leak-proof layer 2 Test to evaluate whether or not. As a result, the hot-melt adhesive 4 was reliably transferred to the leak-proof layer 2.

[0035]
As mentioned above, although the manufacturing method of the absorbent article of this invention was demonstrated about the preferable embodiment, the manufacturing method of the absorbent article of this invention is not restrict | limited to the 1st-3rd embodiment mentioned above, this invention. Any change can be made without departing from the spirit of the present invention.
[0036]
The method for producing a sanitary napkin has been described as a preferred embodiment of the method for producing an absorbent article of the present invention. However, the present invention is not limited to the sanitary napkin, and is applied to the case of manufacturing other absorbent articles such as disposable diapers. can do.
[0037]
As the pressing roll, a material that can be deformed and recovered in accordance with the shape of the pressed surface of the member to be adhered or bonded can be appropriately used.
The member forming the pressing roll is not limited to urethane foam, and may be other soft elastic materials. In this case, the entire pressing roll is not necessarily made of a soft elastic material, and at least the surface of the pressing roll only needs to be formed of a soft elastic member.
Further, the sheet in the method for manufacturing an absorbent article of the present invention is not limited to a packaging film but may be release paper .
[0038]
Moreover, in the manufacturing method of the sanitary napkin of the said 1st-3rd embodiment, the hot-melt-type adhesive 4 is 3 in the packaging film 3 or the leak-proof layer 2 so that it may extend in the orthogonal direction of the conveyance direction P of the conveyor 6. However, the hot melt adhesive 4 may be applied to the packaging film 3 or the leak-proof layer 2 so as to extend in the transport direction P of the conveyor 6.
The number of hot melt adhesives is not limited to 2 or 3, but may be 4 or more. Furthermore, the hot-melt adhesive may be a coating pattern that is not a plurality of strips.
In the manufacturing method of the sanitary napkin of the first and second embodiments, the sanitary napkin 10 is conveyed in a direction X (see FIG. 4) perpendicular to the longitudinal direction thereof, and the sanitary napkin 10 of the third embodiment is used. In the method for producing a sanitary napkin, the absorbent layer 1 is transported in the longitudinal direction Y (see FIG. 4). In the present invention, the orientation of the sanitary napkin or the absorbent layer during transport is appropriately changed. be able to.
[0040]
【The invention's effect】
According to the present invention, when a sheet is adhered to the surface of a leak-proof layer via a hot-melt adhesive, the hot-melt adhesive can be transferred to the surface of the leak-proof layer with sufficient adhesion. . Further, according to the present invention, when the absorbent layer and the leak-proof layer are laminated via a hot-melt adhesive, the absorbent layer and the leak-proof layer have a sufficient adhesive force via the hot-melt adhesive. Can be stacked.
[Brief description of the drawings]
FIG. 1 is a schematic side view showing a first embodiment of a method for producing an absorbent article of the present invention.
FIG. 2 is a schematic side view showing a second embodiment of the method for producing an absorbent article of the present invention.
FIG. 3 is a schematic side view showing a third embodiment of the method for producing an absorbent article of the present invention.
FIG. 4 is a plan view showing a sanitary napkin to which a packaging film is adhered, obtained by the first and second embodiments of the method for producing an absorbent article of the present invention.
FIG. 5 is a perspective view showing a sanitary napkin with a predetermined package obtained by the first embodiment and the second embodiment of the method for producing an absorbent article of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Absorbing layer 2 Leak-proof layer 2a Absorbing layer opposing surface 2b Absorbing layer non-facing surface 3 Packaging film (sheet)
3a Leakproof layer facing surface 3b Leakproof layer non-facing surface 4, 4a, 4b, 4c Hot melt adhesive 5 Press roll 5a Press surface 6 Conveyor 6a Conveying belt 7 Direction changing roll 10 Sanitary napkin (absorbent article)

Claims (4)

A method of manufacturing an absorbent article having unevenness in the thickness direction by forming a thick central part and forming a raised part,
Including an adhesion or adhesion step of adhering or adhering at least two members via a hot melt adhesive applied to a plurality of regions,
A method for producing an absorbent article using a pressure roll having a surface hardness of 2 to 10 (JIS A), which can be deformed and recovered in accordance with the shape of the pressed surface of the member in the adhesion or adhesion step.   The two members to be adhered or bonded are the leak-proof layer and sheet of an absorbent article provided with an absorbent layer and a leak-proof layer. 2. The method for producing an absorbent article according to claim 1, wherein the sheet is pressed or adhered to the leak-proof layer via the hot melt pressure-sensitive adhesive.   The two members to be adhered or bonded are an absorbent layer that forms an absorbent article and a sheet that forms a leak-proof layer. The method for producing an absorbent article according to claim 1, wherein the method is a step of laminating the absorbent layer and the leak-proof layer through the hot melt adhesive by pressing.   The said press roll is a manufacturing method of the absorbent article in any one of Claims 1-3 currently formed with the soft elastic material.

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