JPH01158953A - Surface material of sanitary article - Google Patents

Abstract

PURPOSE:To impart a liquid return preventing property and a shielding property without lowering liquid permeability, by unifying two layers of a film layer having openings provided on at least a part thereof and brought into contact with the skin and the fiber layer facing to an absorbing body with the surface material for covering the surface of the absorbing body and specifying the water rising height of paper in a Klemm water absorbing capacity test. CONSTITUTION:A surface material is formed by unifying a film layer 1 and a fiber layer 2, and the film layer 1 is composed of a hydrophobic film having openings 6 provided to at least a part thereof and made opaque from the aspect of a shielding property. The film layer 1 has a top part 3, a bottom part 4 and a wall part 5 connecting both parts from the aspect of a liquid return preventing property to form a space of a hydrophobic atmosphere between the surface of the body and an absorbing body. Further, the openings 6 are provided to at least a part of the wall part and the bottom part 4 pref. has no opening. The fiber layer is one unified with the film layer and the water absorbability thereof is controlled so as to adjust the water rising height mea sured by a Klemm water absorbing capacity test to 100mm or less to impart a sufficient liquid return preventing property and a sufficient shielding property.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a surface material with excellent usability that can be suitably used for sanitary products such as disposable absorbent articles for boat fishing, and particularly for sanitary napkins, sanitary napkins, etc. This invention relates to surface materials for disposable absorbent articles such as disposable diapers.

[Conventional technology and its problems]

Absorbent articles used to absorb and retain liquid discharged from the human body have an absorbent material that absorbs and retains liquid interposed between a liquid-permeable surface material and a liquid-impermeable leakage prevention material. It is common knowledge that it has a similar structure. In this absorbent article, a liquid-permeable surface material (sometimes referred to as an outer wrapper, covering material, topsheet, cover stock, etc.) is used to quickly transfer the liquid to be absorbed into the absorbent body. (hereinafter referred to as liquid permeability), as well as
Providing a dry sensation to the human body without allowing the liquid that has migrated into the absorber to return (hereinafter referred to as liquid return prevention)
There are demands for the material to be able to mask the color of the absorbed liquid (hereinafter referred to as "shielding ability"), and to have a good texture.

To achieve this objective, various proposals have been made and there are many improved techniques.

Specifically, first, a nonwoven fabric, which is an aggregate of hydrophobic fine fibers, is used as the surface material, and a space with a hydrophobic atmosphere is created between the body surface and the absorbent material, thereby allowing liquid to flow through the body without impairing liquid permeability. Technology to improve return prevention (Japanese Patent Application Laid-Open No. 58-180
602, etc.). However, in nonwoven fabrics, the liquid that should be transferred to the absorbent material tends to be retained in the microscopic spaces that are inevitably formed as an aggregate of fibers, and when pressure is applied, the retained liquid easily transfers to the body surface, which is a fatal problem. Therefore, no matter how hydrophobic fibers are used, there is a limit to the improvement in liquid return prevention properties.

On the other hand, a technique has also been proposed (JP-A-57-1340 and JP-A-61-45753) in which the liquid return prevention property is improved by using a hydrophobic film having holes as a surface material. Indeed, if such a porous hydrophobic film is used as a surface material, liquid retention in the surface material will not occur. However, in porous hydrophobic films,
A major drawback is that the size of the apertures needs to be large to provide sufficient liquid permeability, and when pressure is applied, liquid that has migrated to the absorber can easily migrate to the human body surface through such large apertures. Therefore, it is difficult to achieve both liquid permeability and liquid return prevention properties.

Moreover, since the absorbent body is visible through the large apertures,
The shielding properties were poor and the user felt unbearably uncomfortable.

Therefore, a technique to improve the liquid return prevention property by bonding a fiber layer to the inside of the perforated hydrophobic film, that is, to the side facing the absorbent body (JP-A-57-1339, JP-A-55-1999)
32581) were proposed.

However, in these techniques, since absorbent fibers such as wood pulp are used, not only the liquid return prevention property is hardly improved, but also the shielding property is deteriorated, which is an undesirable result. In other words, the presence of the absorbent fiber layer inside the film layer causes diffusion and retention of liquid inside the surface material, so the liquid return prevention property is hardly improved, and furthermore, the color of the diffused and retained liquid is different from that of the film layer. The shielding performance deteriorates because the object is seen through. This problem can be alleviated to some extent by improving the opacity of the film, such as by adding a large amount of white pigment to the film layer, but since the film layer and fiber layer are in close contact, the opacity of the film layer It is not possible to make sufficient improvements by simply increasing the

Since this problem reduces the practical value of the film/fiber composite surface material, there is an urgent need for a solution to this problem as soon as possible.

[Means for solving problems]

The present inventors have conducted extensive research in order to overcome these problems, and have examined the fiber layer of the film/fiber composite surface material from a completely different perspective than that of conventional techniques.

In other words, in the conventional technology, there is a fear of a decrease in liquid permeability.
Since hydrophilic fibers such as wood pulp were used as the constituent fibers of the fiber layer without being subjected to sufficient hydrophobic treatment, it was not possible to provide sufficient liquid return prevention properties. After reexamining this, they found that by using hydrophobic fibers or hydrophilic fibers that have been sufficiently hydrophobized to reduce the diffusion and retention of liquid in the fiber layer, liquid permeability can be reduced to almost nothing. It was discovered that sufficient liquid return prevention properties and shielding properties could be provided without deterioration, and the present invention was completed.

That is, the present invention provides a surface material for sanitary products that covers the surface of an absorbent body, and comprises two layers: a film layer that contacts the skin and has holes in at least a portion thereof, and a fiber layer that faces the side of the absorbent body. A surface material for sanitary products, characterized in that the surface material has a water rise height of 100 mm or less as measured by Klemm's water absorption test (JIS-P8141) on paper. It provides:

Hereinafter, the film layer and fiber layer in the present invention will be explained in detail with reference to the drawings.

Fig. 1 is a perspective view showing one embodiment of the surface material of the present invention;
The figure is a perspective view showing another embodiment of the surface material of the present invention,
FIG. 3 is an enlarged view of the opening portion. 4 to 6 are enlarged views of the openings showing another embodiment of the surface material of the present invention, and FIG. 7 is a perspective view of another embodiment of the surface material of the present invention.

The surface material of the present invention is formed by integrating a film layer 1 and a fiber layer 2, and the film layer 1 may be any kind of hydrophobic film having holes 6 provided in at least a portion thereof. However, in consideration of shielding properties, it is preferably opaque. The opacity of this film layer 1 is the whiteness (
(see examples), and its whiteness is 10
% or more. Note that various methods can be considered for imparting opacity. For example, a method of adding white pigment to resin during the film manufacturing process,
Examples include a method of coating the film surface by mixing a white pigment with a suitable binder, but any method other than these methods may be used as long as the desired opacity can be imparted.

In addition, considering the liquid return prevention property, the film layer l is
As shown in the figure, it is preferable that a space with a hydrophobic atmosphere is formed between the body surface and the absorbent body by having a top part 3, a bottom part 4, and a wall part 5 connecting these parts. Furthermore, even in such a form, at least a part of the wall has an opening 6.
It is more preferable that the bottom part 4 has no openings. In addition, considering the liquid permeability, the wall portion 5 has an inclined portion, a part of the inclined portion is provided with an opening 6, and the inclined portion with the opening is located at the top 3. It is preferable not to be covered with.

Considering further improvement in liquid return prevention, the 8th
As shown in the figure, it is preferable that the angle α between the plane formed by the opening 6 and the plane formed by the top 3 connected to the wall 5 in which the opening 6 exists is smaller than a right angle and at least 20°. preferable. In the film layer 1, when the angle α (hereinafter referred to as the inclination angle) between the plane formed by the opening 6 and the plane formed by the top 3 connected to the wall 5 where the opening exists is larger than a right angle. When very large pressures are applied, it becomes difficult to maintain a predetermined shape and the apertures in the wall become clogged, resulting in some loss of liquid permeability. Furthermore, if the inclination angle is smaller than 20', the surface material will substantially no longer have a three-dimensional shape, resulting in poor liquid return prevention and shielding properties.

Regarding the distribution of the openings 6, they may be present at the top 3 as shown in FIG. 7, but considering the liquid return prevention property and shielding property,
It is preferable that 50% or more of all open pores exist in the wall portion 5, and it is more preferable that all open pores exist in the inclined portion.

The openings in the film layer can be freely formed within a range that provides a good balance between liquid permeability, liquid return prevention, and shielding properties, but generally the openings have a size of 0.1 to 2 mm.
And the density of openings is 10 to 100/cIII! It is preferable that However, the size and density of the openings do not necessarily have to be constant, and can be changed regularly or irregularly as necessary. For example, the size or density of the pores can be increased in the central portion of the absorbent article where particularly high liquid permeability is required.

Any hydrophobic resin may be used for forming the film layer. Examples include polyolefins, copolymer resins of olefins and other monomers (vinyl acetate, ethyl acrylate, etc.), synthetic resins such as polyester, nylon, acetate, and blended polymers of these. However, consideration must be given to texture and processability in actual production. Then, polyolefins, copolymer resins of olefins and other monomers, or blend monomers thereof are preferable, and among these, low-density polyethylene, linear low-density polyethylene, ethylene-vinyl acetate copolymers, or blends thereof are more preferable, and Melt index value is 10
It is even more preferable if it is above.

Considering texture and shielding properties, the thickness of the film layer is generally preferably from 3 to 50, and from 5 to 301! It is more preferable if it is m.

Furthermore, as a means to control liquid permeability and liquid return prevention properties, the surface of the film layer can be made hydrophilic by applying a surfactant, physical treatment such as plasma irradiation, or chemical treatment such as mineral acid treatment. Alternatively, the surface of the film layer can be treated to make it water repellent by applying a silicone-based or fluorine-based chemical.

Furthermore, it is also possible to subject the film layer to calender treatment or fine pattern embossing treatment, if necessary, such as to improve the texture.

On the other hand, regarding the fiber layer, the surface material, that is, the one integrated with the film layer, was tested using the Klemm water absorption test (JIS-P
In order to provide sufficient liquid return prevention and shielding properties, controlling the water absorption so that the rising height of water (hereinafter referred to as Klemm's water absorption) measured by 8141) is 100 mm or less. is necessary.

The fiber layer can be a so-called web consisting of slight entanglement of fibers, a so-called non-woven fabric or paper consisting of fibers entangled or fixed by adhesive, but liquid permeability and liquid return prevention should be taken into consideration. In this case, a nonwoven fabric or a nonwoven fabric is preferable, and a nonwoven fabric is more preferable in consideration of texture, and a so-called dry heat-adhesive nonwoven fabric in which fibers are fixed to each other by heat fusion is even more preferable. In the web, the fibers are not fixed to each other and the fiber layer is easily destroyed by the movement of the user, so liquid permeability and liquid return prevention properties may be reduced. Furthermore, there is a limit to the improvement in texture of paper. On the other hand, in nonwoven fabrics, especially dry heat bonded nonwoven fabrics, the fibers are firmly fixed to each other.
Furthermore, since it is highly flexible, a surface material with excellent liquid permeability, liquid return prevention properties, and texture can be obtained.

In addition, the fiber layer can have a structure in which the composition varies discontinuously in the thickness direction, but in this case, if the fibers are arranged so that the hydrophilicity increases as the distance from the film layer increases. , is more preferable because it improves the liquid return prevention property and the shielding property.

Various fibers can be used as constituent fibers of the fiber layer. For example, it is possible to use hydrophilic fibers such as wood pulp, rayon, vinylon, etc. that have been subjected to a hydrophobic treatment using a well-known method, or hydrophobic fibers such as polyolefin, polyester, acrylic, polyamide, etc., but they can be used to prevent liquid return. Considering the properties and texture, it is preferable that the fiber is mainly composed of hydrophobic fibers. Considering that the fiber layer is preferably a thermally bonded dry nonwoven fabric as mentioned above, among these hydrophobic fibers, polyethylene/polypropylene composite fiber, polyethylene/polyester composite fiber, low melting point polyester/polyester composite fiber, etc. Heat-adhesive fibers such as the like are more preferred, and polyethylene/polypropylene composite fibers and polyethylene/polyester composite fibers are even more preferred among them, considering adhesiveness with the film layer.

In addition, in the case of hydrophobic fibers, if it is necessary to further improve liquid permeability or liquid return prevention properties, appropriate hydrophilic treatment or water repellency treatment can be applied, or liquid return prevention properties can be improved. If further improvement in shielding properties is required, fibers with irregular cross-sections, such as multi-lobed fibers, can also be used.

The fineness of the fibers is generally preferably in the range of 1 to 10 deniers, and even more preferably 1.5 to 6 deniers, in consideration of liquid return prevention properties and texture.

Considering the basis weight of the fiber layer as well as the liquid return prevention property and texture,
In general, it is preferably 5 to 100 g 7m”,
More preferably, it is 10 to 50 g/m''.

Furthermore, in consideration of liquid permeability, it is preferable that the density of the fibers in the fiber layer is lower in the pores of the film layer than in the non-pores, and no fibers are present in 10% or more of the area of the flowering part of the film layer. It is more preferable not to do so.

Considering liquid permeability and liquid return prevention, it is preferable that the film layer and the fiber layer are integrated as strongly as possible, and it is generally preferable that the peel strength of both is 50 g or more. Further, when integrating by adhesion, the adhesion points may be uniformly distributed on the boundary surface or may be patterned.

Typical methods for producing the surface material of the present invention can be roughly divided into the following two methods.

The first method is to first integrate a film without holes and a fiber layer using thermal bonding or an adhesive, and then perforate the film. This method is advantageous in that the density of the fibers in the fibrous layer in the openings of the film layer is necessarily lower than in the non-openings, and also in the process of melting and extruding the raw material resin to produce the film. It can be said that this method is advantageous in terms of productivity compared to the method described below, since a so-called laminate film obtained by integrating the method can be used.

The second method is to first perforate a film without holes to form a perforated film and then integrate it with a fiber layer. The method of integration may be thermal adhesion or adhesive bonding, or if the density of the openings is relatively large, entanglement using air flow or high-pressure water flow.

In addition, if it is necessary to provide particularly high liquid permeability, a sheet-like material such as a nonwoven fabric or web made of hydrophilic fibers such as pulp or rayon can be attached to the back side of the surface material using thermal adhesive or adhesive. Alternatively, in the first method described above, it is also possible to integrate the parent aqueous fiber sheet by overlapping the surface material and perforating the surface material.

The surface material obtained in this way can be constructed into sanitary products by any method or form, but the present inventors have found a structure that particularly takes advantage of the characteristics of this surface material. As shown in the figure, the surface material 7 is coated on the absorbent body so that the openings 6 are located only in the central part of the surface that should be in contact with the skin, and the surface material 7 is coated on both short sides and the area where the surface material 7 overlaps. By forming the joint portion 8 by water-tightly joining them by adhesive bonding, thermal bonding, etc., it is possible to obtain an absorbent article with a simple structure in which the leakage preventive material is omitted.In addition, in FIG. (a) is with the use side that should be in contact with the skin facing up,
(b) shows the state in which the use side is facing down.

Further, as shown in FIG. 11, an absorbent body is inserted between the surface material 7 and the leakage preventive material 9, and the leakage preventive material 9 is rolled up until it reaches the upper surface of the surface material 7, and further the length of the leakage preventive material 9 is By joining the side portions to the surface material 7 to form the joint portion 8, it is possible to obtain an absorbent article that has excellent leakproof properties and is comfortable to wear.

In addition, in FIG. 11, (a) shows a state in which the surface to be used that is in contact with the skin is facing up, and (b) shows a state in which the surface to be used is facing down.

In addition, as shown in FIG. 12, the absorbent component 10 made of rayon cotton, polyester cotton, pulp, etc. is attached to the fiber layer 2 of the surface material 7 by entanglement or thermal bonding by differential fluid pressure such as air pressure or water flow. By integrating with adhesive using a binder, or by covering the component 10 of the absorber with an absorbent fiber sheet 11 having fluff on the surface and laminating this on the surface material 7 as shown in FIG. Liquid permeability can be further improved without impairing liquid return prevention and shielding properties.

The sanitary products constructed using the surface material of the present invention are not limited to the examples described in detail, but can be modified in various ways within the range defined above.

〔Example〕

Hereinafter, how useful the present invention is will be explained with specific examples, but the present invention is not limited to these examples.

Examples 1 to 47 and Comparative Examples 1 to 7 Using the film layers shown in Tables 1 and 2 and the fiber layers shown in Table 3 as constituent materials, various surface materials shown in Tables 4 to 7 were applied to the specified It was made by the method.

The method for measuring the physical properties of each constituent material and surface material will be described below. Note that each physical property value is an average value of 10 measured values.

(1) Method for measuring physical properties of constituent materials ■ Film layer i) Size of pores: Take an enlarged photograph of the pore surface viewed from the perpendicular direction using an electron microscope, and measure the size of the pores on the photograph. The aperture size A was measured using a planimeter, and the actual aperture size A was calculated using equation (1).

A (mm”) = a (mm”) / x”
・" (1) However, X: magnification of the photograph relative to the actual object ii) Density of openings: Measured by counting the number of openings per 1 cm" of surface material.

ij) Inclination angle and wall thickness: A cross section of the surface material was photographed as shown in FIG. 8, and the angle indicated by α was measured with a protractor, and this was taken as the inclination angle.

In addition, the wall thickness t1 on the photograph was measured using a ruler, and (2
) was used to calculate the actual wall thickness T. In addition, when the surface material has a curved shape, as shown in FIG.
A straight line passing through the 2° tangent at the top of the top and both ends of the opening! 2
The intersection angle is defined as the inclination angle α.

T+ (ρ) =1000t+ (mm)/x
-(2) iv) Whiteness: Measurement was carried out using a ND-101DP colorimetric colorimeter manufactured by Nippon Heavy Industries, Ltd. First, the reflectance of a standard white plate (barium sulfate) for light with a wavelength of 500 nm (green) is 10.
After calibrating to make it 0%, we measured the reflectance of each surface material sample against light of the same wavelength (whiteness).For detailed operating instructions, please refer to "101 Leaf Shape Handling Instructions". In accordance with the ``Book''.

■ Fiber layer i) Basis weight: The weight of the fiber layer was measured and the basis weight was calculated.

(2) Surface materials When evaluating the items below ■ to ■, remove the surface materials of commercially available sanitary napkins "Laurier" (manufactured by Kao ■), and instead configure each surface material as shown in Figure 10. This was evaluated as a hypothetical napkin sample.

■ Klemm Water Absorption: The height of water rise after 10 minutes was measured in accordance with JIS-P8141 in the length direction of the absorbent article in the portion of the surface material where the pores were present.

■ Absorption time and liquid return amount: 10g of defibrinated horse blood to 5g/c of napkin sample
The absorption time was defined as the time required for absorption. Generally, the shorter the absorption time, the better the liquid permeability. cmz, and the amount of test liquid that returned from the inside through the surface material was measured and determined as the amount of liquid return.The smaller the amount of liquid return, the better the ability to prevent liquid return.

■ Texture: The feel of the hypothetical napkin samples was ranked into the following three categories.

Grade 3: Very soft.

Grade 2: Soft.

Grade 1: Hard and unsuitable as a surface material.

■Visual Dryness: The condition after absorbing 6g of horse defibrinated blood into a hypothetical napkin sample was ranked into the following four categories.

Grade 4: No red color of blood is observed.

Grade 3: Only a slight red color is observed in the blood.

2. Grade: Some red blood is observed.

Grade 1: The red color of the blood is so pronounced that it causes discomfort.

Note) LDPE: Low density polyethylene (manufactured by Mitsui Petrochemical) EV
A: Ethylene-vinyl acetate copolymer (manufactured by Mitsui Petrochemicals) Tafmer: Ethylene-α olefin copolymer (manufactured by Mitsui Petrochemicals) Blend? LLDPE-LDPE-Tafmer blend A-2: Open pores are present in a ratio of wall/top = 70/30.

A-3: Open holes exist at a ratio of wall/top -30/70.

A-4: Fully open pores exist only at the bottom.

A-5: Openings exist in the flat film.

B-2 = Surface hydrophilization treatment was performed by applying a surfactant (Perex 0TP manufactured by Kao ■).

B-3: Surface hydrophilic treatment was performed by plasma irradiation under argon gas.

B-4 = Surface water repellent treatment was performed by applying a fluorine-based water repellent (Sony Chemical ("Bosui" manufactured by M)).

Table 3 Fiber Layer Continuation of Table 3 Note) 11-1 to 12: Predetermined fibers were made into a web using a miniature card and then treated with hot air.

If-13: Predetermined fibers were made into a web using a miniature card, and then subjected to high-pressure water jet treatment.

■-14: "AIL" manufactured by Asahi Kasei ■ ll-15: Nimura Kagaku Q-made [Taiko TCF Jn-16
: "Counter Cloth" manufactured by Kuraflex ■ 11-17: "Vix" manufactured by Ino Paper ■ 11-18, 19: II-20, 217 valves manufactured by Ino Paper ■ were made into a web by the air-lay method.

II-22, 23: Predetermined fibers were made into a web using a miniature card.

ES: Polyethylene/polypropylene composite fiber (manufactured by Chisso ■) ESIIB: Polyethylene/polypropylene composite fiber (manufactured by Chisso ■) Sll: Polyethylene/polyester composite fiber (Daiwabo side type) PET: Polyester fiber (manufactured by Kijin ■) Ray
: Rayon fiber (manufactured by Daiwabo ■) C-1: Mixed system of alkyl phosphate and sorbitan fatty acid ester C-2: Silicone system C-3: Alkyl ketene dimer thread tube 4 Table Composition and performance of surface material (+) Note ) C-1: After laminating the film resin on the fiber layer,
Openings having the shape shown in FIG. 2 were formed using an embossing roller.

Table 5 Composition and performance of surface material (2)
6 Table Composition and performance of surface material (3) No. 7
Table Structure and Performance of Surface Material (4) Note) C-2: After forming holes in the shape shown in FIG. 2 in the film layer alone using an embossing roller, the fiber layer was fixed with an adhesive.

As shown in Examples 1 to 47, the surface material of the present invention is
The absorption time and liquid return amount are small, the visual dryness is good, and the texture is also very good. Especially from Example 1? , 10.11°15~34.44~47 is,
It has particularly high levels of liquid return prevention and visual dryness, making it a truly ideal surface material.

In Comparative Examples 1 to 3, the three-dimensional side hole film was used alone as the surface material without integrating the fiber layer. In Comparative Example 1, the thickness of the film layer is small, so the texture is good, but the shape retention during pressurization is poor and the pores are easily clogged, so the liquid permeability is poor. On the contrary, Comparative Example 2 has a thick film layer, so it has high shape retention and good liquid permeability, but it is hard and has a poor texture.

Furthermore, in Comparative Example 3, the film did not have a three-dimensional shape, so the liquid return prevention property and visual dryness were poor.

In Comparative Example 4, the nonwoven fabric is used alone as the surface material without being integrated with the film, but as mentioned above, liquid is very likely to remain in the gaps between the fibers of the nonwoven fabric, so the liquid return prevention property and visual Poor dryness.

In Comparative Examples 5 to 7, a surface material in which the film layer and the fiber layer were integrated was used, but the Klemm water absorption was 100.
Since it exceeds mm, liquid return prevention property and visual dryness are poor.

Therefore, it must be said that all of the materials shown as comparative examples are insufficient as surface materials.

[Brief Description of the Drawings] Fig. 1 is a perspective view showing one embodiment of the surface material of the present invention, Fig. 2 is a perspective view showing one embodiment of the surface material of the present invention;
The figure is a perspective view showing another embodiment of the surface material of the present invention, FIG. 3 is an enlarged view of the opening portion thereof, and FIGS. An enlarged view, FIG. 7 is a perspective view showing still another embodiment of the surface material of the present invention, and FIGS. 8 and 9 show methods for measuring the inclination angle, wall thickness, and fiber layer thickness of the film layer. 10 are perspective views showing one embodiment of an absorbent article using the surface material of the present invention, (a) is a state in which the use surface that should be in contact with the skin is facing up, and (b) is a state in which the absorbent article is in use. Shown with the side facing down. FIG. 11 is a perspective view showing another embodiment of an absorbent article using the surface material of the present invention, in which (a) is a state in which the use surface that should be in contact with the skin is facing up, and (b) is a state in which the use surface is in contact with the skin. Shown with the side facing down. FIGS. 12 and 13 are enlarged views of the contact portion between the surface material and the absorbent body in an example of an absorbent article using the surface material of the present invention. 1: Film layer 2: Fiber layer 3: Top 4: Bottom 5: Wall 6: Opening 7: Surface material 8: Joint 9: Leak proof material 1O: Absorbent body component 11:
Water absorbent fiber sheet applicant Kaoru Furuya Figure 1 Figure 2ri! J third cause 1g
Figure 4 Factor 5 Figure 6 Figure 7 Figure 98 Figure 9 Figure 10 (a) (b) Figure 12 Figure 13

Claims (2)

[Claims] 1. A surface material for sanitary products that covers the surface of an absorbent body, and is made by integrating two layers: a film layer that contacts the skin and has holes in at least a portion, and a fiber layer that faces the absorbent body. A surface material for sanitary products, characterized in that the integrated surface material has a rising height of water of 100 mm or less as measured by Klemm's water absorption test (JIS-P8141) for paper. 2. The film layer has a top part, a bottom part, and a wall part connecting them, the wall part has an inclined part, and a part of the inclined part is provided with an opening, and the inclined part has an opening. A surface material for sanitary products according to claim 1, characterized in that the portion is not covered by the top portion.