JPS62144658A - Sanitary tampon - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a sanitary tampon that is used by being inserted into the vagina.

(Prior Art) Conventionally, sanitary tampons have been known whose surfaces are coated with a nonwoven fabric made of woody or hydrophobic fibers in order to prevent their constituent fibers from falling off and remaining in the vagina. It is being Furthermore, such tampons are also known in which a drawstring is connected to a nonwoven fabric portion extending from the rear end.

(Problem to be Solved by the Invention) However, the tampon whose surface is covered with a nonwoven fabric is cut into the same shape and size as the nonwoven fabric and the fibrous web that absorbs menstrual blood and compressed into a columnar body. Since the fibers are molded, their end surfaces are not covered with the nonwoven fabric, which is insufficient to prevent the fibers from falling off. In addition, since the pull-out string is simply tied to a non-woven fabric, when the tampon is pulled out from inside the vagina, it may come off from the tied part or the tied part may be cut, resulting in the tampon being pulled out. There is a possibility that you will not be able to withdraw it.

Therefore, an object of the present invention is to provide a sanitary tampon that can solve the above problems.

(Means for Solving the Problems/Embodiments) The gist of the means of the present invention for solving the above-mentioned problems is that the tampon body has a cylindrical body formed of a lignophilic fiber web and its outer periphery. a covering hydrophobic fiber nonwoven fabric, the nonwoven fabric extends from the front and rear ends of the cylindrical body, the front end extended portion of the nonwoven fabric is folded back from the front end of the cylindrical body to its central hole, and the nonwoven fabric The sanitary tampon is characterized in that the end extension part is welded in a bundle, a drawer string is connected to the welded bundle part, and the tampon body is compression-molded into a columnar body.

Further, the present invention will be explained based on illustrated embodiments.
It is as follows.

As shown in FIG. 1, the tampon body 1 is composed of a spiral cylindrical body 2 formed of a fiber web and a nonwoven fabric 3 covering the spiral cylindrical body 2 extending from its front and rear ends.

The fibrous web is simply a pile of hydrophilic fibers such as cotton rayon, and the nonwoven fabric is a sheet formed from a hydrophobic fibrous web such as polyester or polypropylene.

In the nonwoven fabric 3, both edges in the circumferential direction of the cylindrical body 2 are welded except for the outermost edge 4, and numeral 5 indicates the welded portion.
However, the nonwoven fabric 3 may be wound around the outer periphery of the polymerized cylindrical body 2 so that both sides thereof completely cover the outer periphery of the polymerized cylindrical body 2 without being welded in this way.

As shown in FIG. 2, the front end extension 6 of the nonwoven fabric 3 is folded back from the front end of the cylindrical body 2 to its central hole 7. The rear end extension portion 8 of the nonwoven fabric 3 is welded in a bundled state, leaving the outermost end 9. Therefore, the focused welding portion 10
is hard and has several times the tensile strength of the nonwoven fabric 3. A loop portion 12 of a drawer cord 11 folded in half is hung across the focused welded portion IO, and the loop portion 12 is connected by being inserted in the opposite direction. The cord 11 may be further welded together with the focused weld portion 10 in this manner, or in any other suitable looped or tied state.

As shown in FIG. 3, the tampon body 1 is compression molded into a cylindrical body 13. As long as it is formed into a cylindrical shape in this way, the cross-sectional shape of the formed object may be any other shape, such as a rectangular shape with rounded corners or a three- or four-leaf clover shape.

In the embodiment shown in FIG. 4, the focus welding part 10 is pushed into the central hole 7 at the rear end of the cylindrical body 2 in the state in the embodiment shown in FIG. The columnar body 13 is compression molded. Therefore, in this embodiment, the focused welding portion IO and the connecting portion of the string 11 are completely immersed and fixed inside the rear end of the cylindrical body 13.

6 and 7 show another embodiment of the tampon body l before being squeeze-molded. That is, the tampon body 1 shown in FIG.
is located in the middle of the cylindrical body 2. The tampon main body l shown in FIG.
It reaches the inside of the rear end extension part 8, and the front and rear end extension parts 6, 8
A focused welding portion IO is formed. Therefore, the tensile strength of the focused welded portion 1O shown in FIG. 7 is even greater.

FIG. 8 shows an embodiment in which the front end portion 14 of the cylindrical body 2 is folded back. By doing this, a larger amount of absorbent material is distributed in the front end portion of the tampon body 1 than in other parts.In other words, a smaller amount of absorbent material is distributed in the rear end portion of the tampon body 1 than in the front end portion. This makes it easier to pull out the tampon body l expanded by menstrual blood in the vagina.

As shown in FIG. 9, the nonwoven fabric 3 is given a sheet-like form by intertwining the fibers, and has a large number of independent, approximately circular openings 15 formed by distributing and distributing the fibers. Sometimes those with . Such a nonwoven fabric 3 can be obtained by spraying a fibrous web with a high-speed water jet on a support having a large number of independent protrusions to entangle the fibers and simultaneously distribute the fibers at the protrusions. . The shortest diameter of the pores 15 is 0.5 to 5 mm, and the porosity is 10 to 10 of the nonwoven fabric 3.
Preferably it is 50%.

In addition, the nonwoven fabric 3 has a fineness of 3 d or less and a basis weight of 7 to 35 g/m in consideration of the texture of the tampon surface and menstrual blood permeability.
2. It is preferable that the density is 0.01-0.3 g/arm". The thinner the fibers of the nonwoven fabric 3, the smoother the texture, so it is preferable that the fibers be as thin as possible, but current spinning technology However, it is difficult to obtain a material of 0.7 d or less, and therefore, when using a material of 0.7 d or less, for example, it is made of two thermoplastic polymer components with poor adhesion to each other; Stable fibers, which are splittable composite fibers of 1 to 5 d, in which one component is separated by the other into a plurality of layers continuous in the fiber direction, may be split using a card machine or high-speed water jet treatment. The fiber is disclosed, for example, in Japanese Patent Application Laid-Open No. 57-58582.

(Operations and Effects of the Invention) According to the tampon of the present invention, since the entire tampon body is completely covered with the nonwoven fabric, the internal fibers that are the absorbent material do not fall off and remain in the vagina, making it extremely hygienic. It is true. In addition, since the nonwoven fabric is made of hydrophobic material and is folded back from the front end of the tampon body into the inside thereof, when the front end of the tampon body and its vicinity absorb menstrual blood and expand to the extent that the nonwoven fabric absorbs menstrual blood, Therefore, menstrual blood is absorbed not only from the surface of the tampon body, but also from the inside of the tampon body. The tampon body quickly expands into a substantially cylindrical body so as to prevent menstrual blood from leaking in close contact with the tampon body, and the absorbent material of the tampon body is effectively utilized.

On the other hand, since the pull-out string is connected to the converging welded portion that is the rear end extension of the nonwoven fabric and has a high tensile strength, when the tampon main body is pulled out from the vagina by pulling the string, the connecting portion There is no risk of it breaking.

Therefore, the tampon of the present invention can completely solve the problems of the conventional tampons mentioned above, and is extremely useful in practical use.

[Brief explanation of drawings]

The drawings show an embodiment of the tampon of the present invention, and FIG. 1 is a perspective view of the constituent material of the tampon body, and FIG. , a sectional view showing an example in which the focused welding part is pushed into the rear end of the nonwoven fabric, FIG. 5 is a 4I11 side view in which the constituent material of FIG. FIG. 7 is a partial cross-sectional view showing another example of the constituent material before compression molding, and FIG. 8 is a partial cross-sectional view showing an example in which the front end of a cylindrical fiber web body that is a part of the constituent material is folded back.
FIG. 9 is a partial perspective view showing another example of the nonwoven fabric. l...Tampon body 2...Fiber web cylindrical body 3...Nonwoven fabric 5...Joint portion 6...Front end extension part 7...Central hole 8...Rear end extension part l
O... Focused welding part 11... Pull-out string Figure 1 Figure 3

Claims (11)

[Claims] (1) The tampon body is composed of a cylindrical body formed of a hydrophilic fiber web and a hydrophobic fiber nonwoven fabric covering the outer periphery of the tampon body, and the nonwoven fabric extends from the front and rear ends of the cylindrical body, and the front end of the nonwoven fabric The extension part is folded back from the front end of the cylindrical body to its central hole, the rear end extension part of the non-woven fabric is bundle welded, a pull-out string is connected to the bundle weld part, and the tampon body is squeezed into the columnar body. A sanitary tampon characterized by being shaped. (2) The tampon according to claim 1, wherein the nonwoven fabric is welded to both circumferential edges of the cylindrical body. (3) A patent in which the front end extension part of the nonwoven fabric folded back from the front end of the cylindrical body to the central hole reaches inside the rear end extension part of the nonwoven fabric, and the front and rear end extension parts are focus-welded. A tampon according to claim 1. (4) The tampon according to claim 1, wherein the focused welding portion at the rear end of the nonwoven fabric is pushed into a central hole at the rear end of the cylindrical body, and in this state is press-molded into a columnar body. (5) The tampon according to claim 1 or 3, wherein the focused compression portion is provided leaving an outer edge of the nonwoven fabric. (6) The nonwoven fabric has fibers of 3 d or less and a basis weight of 7 to 35 g.
The tampon according to claim 1, wherein the tampon has a density of 0.01 to 0.3 g/cm^2. (7) The nonwoven fabric is given a sheet-like shape by intertwining the fibers, and has substantially circular pores formed by distributing the fibers, and the pores have a shortest diameter of 0. The tampon according to claim 1, which has a pore size of 5 to 5 mm and a porosity of 10 to 50%. (8) The tampon according to claim 1, wherein the drawer string is tied to the focused weld portion. (9) The tampon according to claim 1, wherein the drawer string is welded to the focused welding portion. (10) The tampon according to claim 1, wherein the drawer string is tied and welded to the focused welding portion. (11) The tampon according to claim 1, wherein the cylindrical body has a front end portion folded back.