JPS62144656A - 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, in menstrual tampons, this is used to prevent the fibers from falling off and remaining in the vagina.

It is known that the surface thereof is coated with a hydrophilic or hydrophobic fibrous nonwoven fabric. On the other hand, it is known that the amount of fiber at the rear end is reduced in order to facilitate withdrawal from the vagina.

(Problem to be Solved by the Invention) However, the tampon whose surface is covered with a non-woven fabric is made by cutting the non-woven fabric and the fibrous web covered with the non-woven fabric to absorb and retain menstrual blood into pieces of the same shape and size, and then press-molding the tampon. Since it has been
The end face is not covered with the nonwoven fabric, which is insufficient to prevent the fibers from falling off. On the other hand, the tampon in which the amount of fibers in the rear end portion is reduced requires complicated steps such as stacking the constituent materials in a stepped manner to reduce the amount of fibers in this way.

The present invention relates to a tampon in which at least the surface is covered with a hydrophobic fiber nonwoven fabric and the amount of fibers in the rear end is reduced. Our goal is to provide a tampon that can solve this problem.

(Means for Solving the Problems/Embodiments) The gist of the means of the present invention for solving the above-mentioned problems is that the constituent material is a hydrophilic fiber web cut into rectangular shapes, and A fibrous nonwoven fabric cut into large rectangles and laminated on both sides of the fibrous web, wherein at least one of the nonwoven fabrics on both sides is made of hydrophobic fibers, and the nonwoven fabric on both sides extends from the periphery of the fibrous web. The opening part is closed, and the constituent material is squeezed into a flower bud shape with the center of the material as a starting point and the hydrophobic fiber nonwoven fabric side is located on the surface, and is press-molded into a columnar body. The present invention resides in a sanitary tampon characterized in that a drawer string is connected to the rear end of the body.

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

As shown in FIGS. 1 and 2, the constituent material 1 of the tampon is a web 2 made of a monomer or a mixture of hydrophilic fibers such as cotton rayon fiber, and polyester fiber.
A nonwoven fabric 3 made of hydrophobic fibers such as polypropylene is used. The fibrous web 2 is cut into rectangles, and the nonwoven fabric 3 is cut into a rectangle of such a size that it covers both sides of the fibrous web 2 and its periphery slightly extends. Then, the fibrous web 21 is sandwiched between the nonwoven fabric 3 which is folded in half, and the nonwoven fabric 3 extends from the side edge of the fibrous web 2 to meet a portion 4.
(However, excluding the folded portion of the nonwoven fabric 3), the outer edges are left and joined by heat welding, and reference numeral 5 indicates the joined portion. The nonwoven fabric 3 may be cut into two rectangular pieces large enough to cover both sides of the fibrous web 2, and in this case, in all parts where the side edges of the fibrous web 2 extend and meet each other. Needless to say, they are joined. In addition, in this case, as described later, the constituent material 1
The nonwoven fabric 3 on the surface of the constituent material 1, which will be located inside the columnar body when it is press-molded, may be made of hydrophilic fibers depending on the case.

The nonwoven fabric 3 preferably has a fineness of 3 d or less, a basis weight of 7 to 35 g/c, and a density of 0.01 to 0.3 g/c, in view of the texture of the surface of the tampon and menstrual blood permeability.

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 with the current spinning technology, it is difficult to weave fibers with a diameter of 0.7 d or less. When using 7d or less, for example, it is composed of two thermoplastic polymer components that have poor adhesion to each other, and one component is separated into a plurality of layers that are more continuous in the fiber direction than the other component. Stable fibers, which are splittable composite fibers of 1 to 5 d, may be split using a card machine or high-speed water jet treatment. Such fibers are disclosed, for example, in JP-A-57-56562.

Furthermore, as the nonwoven fabric 3, a fabric that is given a sheet-like form by intertwining fibers and has a large number of independent openings 6 formed by distributing the fibers may also be used. Yes (see Figure 8). Such a nonwoven fabric can be produced, for example, by a known fiber entangling method using high-speed fluid jetting, that is, by jetting a fibrous web with a high-speed water jet on a support having a large number of independent protrusions, and simultaneously entangling the fibers. The method of distributing the fibers at the protrusions allows the fibers to flow. The shortest diameter of the opening 6 is 0.5
It is preferable that the porosity is 10 to 50% of the nonwoven fabric 3.

Such a constituent material 1 has its center part 7 as a base point,
As shown in Figure 3, squeeze it into a flower bud shape or an umbrella shape,
As shown in FIG. 4, it is compression molded into a cylindrical body 8. As shown in FIG. 5, the cylindrical body 8 is provided with a through hole 10 at its rear end, that is, in the vicinity of the center portion 7, through which the drawstring 9 is inserted. As shown in FIGS. 6 and 7, the string 9 is attached to the back of the cylindrical body 8 by inserting the loop portion folded in half into the through hole 10 and passing the other portion through the loop portion. tied at the end.

(Operations and Effects of the Invention) According to the tampon of the present invention configured as described above, the fiber web is completely covered with the nonwoven fabric that is the exterior material, so that the fibers of the fiber web fall off and prevent the vagina. It is extremely hygienic as it does not leave any residue inside. In addition, tampons are made of rectangular material that is compressed into a flower bud shape starting from the center, so that the amount of material increases from the rear end to the tip. When it is pulled out from inside the vagina after absorbing water and expanding into a flower bud shape, the resistance is smaller and easier to pull out than when the amount of constituent material is uniform throughout.

Moreover, in order to construct such a tampon, there is no need for steps such as stacking the constituent materials in a stepped manner as in the past, so the manufacture is extremely simple and it is extremely useful in practical use.

[Brief explanation of drawings]

The drawings show an embodiment of the tampon of the present invention, in which Fig. 1 is a developed plan view of the constituent materials, Fig. 2 is a sectional view taken along the line X-X in Fig. 1, and Fig. 3 is a perspective view showing the process of forming the tampon. , FIG. 4 and FIG. 5 are side views showing the tampon molding state, and FIG.
7 and 7 are one side view and the other side view showing the state of the tampon being molded, and FIG. 8 is a partial perspective view of a separate nonwoven fabric that is a part of the constituent material. 1... Constituent material 2... Fiber web 3...
・Nonwoven fabric 6...Open hole 1u]

Claims (4)

[Claims] (1) A hydrophilic fibrous web whose constituent materials are cut into squares, and a fibrous nonwoven fabric cut into squares larger than the fibrous web and laminated on both sides of the fibrous web, wherein the nonwoven fabric is on at least one of the both sides. is made of hydrophobic fibers, the meeting portions of the nonwoven fabrics on both sides extending from the periphery of the fibrous web are closed, and the constituent material is positioned at its center with the hydrophobic fiber nonwoven fabric side located on the surface. A sanitary tampon characterized in that the tampon is squeezed into a flower bud shape and press-molded into a columnar body, and a drawer string is connected to the rear end of the columnar body where the base point is located. (2) The tampon according to claim 1, wherein the nonwoven fabric has a basis weight of 7 to 35 g/m^2 and a density of 0.01 to 0.3 g/cm^3. (3) The nonwoven fabric located at least on the surface of the columnar body is given a sheet-like form by intertwining fibers, and has openings formed by distributing the fibers, and the openings are The tampon according to claim 1, having a shortest diameter of 0.5 to 5 mm and a porosity of 10 to 50% of the nonwoven fabric. (4) The tampon according to claim 1, wherein the nonwoven fabric located inside the columnar body is made of hydrophilic fiber.