JPH05111508A - Surface material for sanitary article - Google Patents

Abstract

PURPOSE:To improve the dry feeling and air permeability and make stuck menstrual blood inconspicuous by partially heating and pressurizing nonwoven fabric containing synthetic fibers, and partially forming it into films while leaving air-permeable fiber gaps. CONSTITUTION:A nonwoven fabric 3 containing synthetic fibers is partially heat-embossed, it is partially formed into films 5 while air-permeable fiber gaps 4 are left, thus a surface material 1 for sanitary article is constituted. Opening sections 6 are provided appropriate on the surface material 1. Films 5 are also formed around the opening sections 6. The stuck menstrual blood is repelled by the films 5, it is collected to the air-permeable fiber gaps 4 or the opening sections 6 adjacent to the films 5, and the menstrual blood is easily absorbed to an absorption layer. The portions having the air-permeable fiber gaps 4 of the nonwoven fabric 3 are mostly brought into contact with the skin. The stuck menstrual blood is made inconspicuous, and the dry feeling and air permeability are improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface material used for sanitary products such as sanitary napkins and underwear liners.

[0002]

2. Description of the Related Art Conventionally, a surface material for sanitary products of this type is
As shown in the microscope enlarged view shown in FIG. 3, a dry mesh sheet 11 in which a large number of apertures 6 are provided in the impermeable film 10, and as shown in the microscope enlarged view shown in FIG. There was a non-woven fabric 3 having a fiber gap 4.

[0003]

By the way, in order to enhance the commercial value, this kind of surface material for sanitary products has a dry feeling and breathability, and the adhering menstrual blood is inconspicuous. However, the above-mentioned conventional surface materials for sanitary products have not been able to cope with such problems.

That is, the dry mesh sheet 11
Is excellent in dry feeling at the open pores, and the attached menstrual blood is repelled at the non-open pores and is easily gathered to the open pores side and easily absorbed by the absorbent layer. In this non-opened portion, the sheet comes into contact with the skin, so that there is a problem that breathability is poor and stuffiness remains. Further, the nonwoven fabric 3 has excellent air permeability because the air-permeable fiber gaps are present throughout, but since menstrual blood is dispersed and adheres to the entire air-permeable fiber gaps, it becomes difficult to be absorbed in the absorbent layer. However, there was a problem that a large amount of menstrual blood remained, the dry feeling was inferior, and the remaining menstrual blood was conspicuous.

Therefore, the present invention has been made for the purpose of solving the problems of the conventional surface material for sanitary products.

[0006]

The surface material for sanitary products of the present invention is a non-woven fabric containing synthetic fibers which is partially heated and pressed to form a film while leaving air-permeable fiber gaps. I am trying. Further, the partially filmed non-woven fabric may be provided with openings. However, when a hole is formed by hot embossing, a film portion is also formed around the hole. Various types of synthetic fibers such as polyester type and polyvinyl alcohol type can be used, but it is preferable to use synthetic resin fibers. It is sufficient that the non-woven fabric contains synthetic fibers to the extent that it can be formed into a film when heated and pressed, and in addition to synthetic fibers, plant fibers or inorganic fibers may be mixed. In addition, the heat and pressure may be hot embossing as a typical example, but the heat and pressure is not limited thereto.

The film forming rate of the surface material for sanitary products of the present invention is preferably in the range of about 20 to 70% of the whole nonwoven fabric. When it is less than 20%, menstrual blood becomes noticeable,
When it is 70% or more, the dry feeling and the air permeability are deteriorated. The diameter of the opening is 1000 μ or less, particularly about 500 to
The range of 600 μ is preferable. If it is 1000 μm or more, the menstrual blood absorbed under the surface material from the opening becomes conspicuous.

[0008]

Since the surface material for sanitary products of the present invention is subjected to the above-mentioned means, the adhered menstrual blood is repelled in the filmed portion, and the air-permeable fiber gaps or openings of the nonwoven fabric adjacent to the filmed portion are released. The portions of the non-woven fabric that are gathered together and have air-permeable fiber gaps come into contact with the skin mainly.

[0009]

EXAMPLES The constitution of the surface material for sanitary products of the present invention will be described below with reference to the drawings shown as examples. Figure 1
FIG. 3 is a perspective view of an underwear liner 2 using the sanitary product surface material 1 of the present invention. As shown in the enlarged view of the microscope shown in FIG. 2, the surface material 1 for sanitary products is formed by partially hot embossing a nonwoven fabric 3 containing synthetic fibers while leaving air-permeable fiber gaps 4 therebetween. It is supposed to be a film. Then, the non-woven fabric having the film-formed portion 5 is appropriately provided with the opening portion 6. However, at this time, a filmized portion 5 is also formed around the opening portion 6.

Next, the results of the sensory tests of the underwear liner using the sanitary surface material of the present invention and the conventional underwear liner using the sanitary surface material will be described. The surface material for sanitary products used for the underwear liner used as Example 1 and the surface material for sanitary products used for the underwear liner used as Comparative Products 1 and 2 were as shown below.

Practical example 1: In the above-mentioned constitution, the film forming rate is about 20% of the whole nonwoven fabric, the opening rate of the entire nonwoven fabric is about 30%, and the diameter of the opening is about 1000 μ or less. Comparative product 1: A dry mesh sheet in which the porosity of the impermeable film is about 23%.

Comparative product 2: A non-woven fabric as a whole. Using the above-mentioned Example 1 and Comparative Examples 1 and 2, the degree of breathability,
A monitor survey was conducted on the degree of texture and the degree of conspicuous residual menstrual blood on the surface. The results are shown in Table 1. The degree of feel of the skin was evaluated by the following three ranks. O: Percentage of those who felt good B: Percentage of those who felt normal X: Percentage of those who felt bad

O: Percentage of those who felt stuffy △: Percentage of those who felt stuffy X: Percentage of those who felt stuffy The residual menstrual blood was evaluated by the following three ranks. ○: Percentage of those who felt that they had no menstrual blood remaining △: Percentage of those who felt that they had some residual menstrual blood × ... Percentage of those who felt that they had residual menstrual blood

[0014]

[Table 1]

[0015]

Since the surface material for sanitary products of the present invention is constructed as described above, the attached menstrual blood is repelled at the filmed portion, and the nonwoven fabric adjacent to the filmed portion is vented. The menstrual blood is collected in the interstices or openings of the sex fibers, and is easily absorbed by the absorbent layer, so that the menstrual blood remains little and is inconspicuous. Further, since the part of the non-woven fabric having the air-permeable fiber gap comes into contact with the skin mainly, the dry feeling and the air permeability are excellent.

[Brief description of drawings]

FIG. 1 is a perspective view of an underwear liner using a surface material for sanitary products of the present invention.

FIG. 2 is a microscope enlarged view of the surface material for sanitary products of the present invention.

FIG. 3 is a microscope enlarged view showing an example of a conventional surface material for sanitary products.

FIG. 4 is an enlarged view of a microscope showing another example of a conventional surface material for sanitary products.

[Explanation of symbols]

 3 Nonwoven fabric 4 Breathable fiber gap 5 Film 6 Opening part

Claims (2)

[Claims] 1. A surface material for sanitary products, characterized in that a nonwoven fabric containing synthetic fibers is partially heated and pressed to form a film while leaving air-permeable fiber gaps. 2. The partially filmed non-woven fabric,
The surface material for sanitary products according to claim 1, wherein an opening portion is provided.