JPH0446739Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a sanitary tampon that is used by being inserted into the vagina.

(Prior art) Conventionally, in sanitary tampons, the constituent fibers are distributed almost uniformly throughout the tampon body, and when the tampon body absorbs menstrual blood and expands, it takes on the shape of a half-opened flower bud. In order to achieve this, the main body is made up of fibers cut into rectangles stacked in a cross shape, or fibers cut into a cross shape are used as the constituent fibers of the main body. It is known that a pull-out string is tied at one end and is compressed into a columnar body using the tied part as a base point and compressed into a flower bud shape.

On the other hand, in order to prevent the constituent fibers of the tampon body from falling off and remaining in the vagina, it is known that the surface of the tampon body is coated with a piece of hydrophilic or hydrophobic fiber nonwoven fabric.

(Problem that the invention aims to solve) However, when the constituent fibers of the tampon body are made by stacking rectangularly cut fiber accumulation pieces in a cross shape, there are many cut edges, so the fibers are removed from the cut edges. There is a high rate of fraying and falling off. Furthermore, when the fiber accumulation piece is cut into a cross shape, the material is cut to make the cross shape, which results in wasted material and increased costs.

On the other hand, in the case of tampons in which the body of the tampon is covered with a piece of fiber-bonded nonwoven fabric, the fiber-bonded nonwoven fabric piece is simply superimposed on the fiber-aggregated piece, so there is delamination between the fiber-bonded nonwoven fabric and the fiber-aggregated piece, which prevents rapid absorption. This may cause a phenomenon.

An object of the present invention is to provide a sanitary tampon that can solve the above-mentioned problems by covering the entire fiber integrated piece with a fiber-bonded nonwoven fabric piece.

(Means for solving the problem) The present invention includes a first fiber aggregate having hydrophilicity,
A second fiber aggregate having hydrophilic properties formed to have a smaller area than the first fiber aggregate and overlapped at the center of one side of the first fiber aggregate, and covering the first and second fiber aggregates. A tampon body is constructed from a hydrophobic fiber-bonded nonwoven fabric piece, and one end of a drawer string is tied to the center of the tampon body, and the second fiber aggregate piece is attached to the inner side with the tied part of the string as a base point. The present invention is based on a sanitary tampon which is compressed into a columnar body while being compressed into a flower bud shape, and is characterized by the following points.

The fiber-bonded nonwoven fabric piece is formed to have an area larger than the area of the first fiber accumulation piece, and the entire both surfaces of the superimposed first and second fiber accumulation pieces are placed in the central part of the inner surface of the tampon body. The fiber-bonded nonwoven fabric piece is coated so that both ends thereof are positioned and overlapped with each other, and the overlapping ends are welded and joined, and the compression molding is performed so that the joined part is located inside the columnar body. .

(Function) When the columnar tampon body absorbs menstrual blood,
Starting from the binding part of the drawer string, the tip of the tampon body swells and expands like a flower bud.
The outermost fiber-bonded nonwoven fabric piece is in close contact with the vaginal wall. At this time, since the fiber-bonded nonwoven fabric piece reliably covers the second fiber accumulation piece located on its inner surface, a delamination phenomenon occurs with respect to the second fiber accumulation piece, which prevents the rapid absorption of menstrual blood. There is no such thing.

(Example) Further, the present invention will be explained based on the illustrated example as follows.

The tampon body 1 shown in FIGS. 3A and 3B includes a fiber accumulation piece 2, which is obtained by cutting a web made by simply accumulating hydrophilic fibers into squares, and a similar web cut into squares smaller than the fiber accumulation piece 2. Fiber accumulation piece 3 overlapped in the center on the upper surface of fiber accumulation piece 2
and a fiber-bonded nonwoven fabric piece 4 which covers the entire surfaces of both sides of fiber accumulation pieces 2 and 3 which are cut into rectangular pieces and overlapped with each other. The covering of the fiber-bonded nonwoven fabric piece 4 is such that both ends 5 thereof are located in the center of the fiber accumulation pieces 2 and 3 and overlap each other, and the overlapping ends 5 are joined by heat welding.

The tampon body 1 shown in FIGS. 4A and B is formed into an octagon by cutting off the corners of the fiber accumulation pieces 2 and 3 and the fiber-bonded nonwoven fabric piece 4 shown in FIGS. 3A and B. It is equivalent.

The tampon body 1 shown in FIGS. 5A and 5B has a hydrophilic fiber aggregate piece 3 cut into a rectangular shape with a small area in the center of the upper surface of a hydrophilic fiber aggregate piece 2 cut into a square. Overlapping,
The whole is covered with a rectangular fiber-bonded nonwoven fabric piece 4, and both ends 5 of the nonwoven fabric piece are joined by heat welding at the center of the upper surface of the tampon body 1.

The tampon main body 1 shown in FIGS. 6A and B corresponds to the tampon body 1 shown in FIGS. 5A and B, which is formed into an octagon by cutting off the corners of the fiber accumulation piece 2 and the fiber-bonded nonwoven fabric piece 4. .

The tampon body 1 shown in FIGS. 7A and 7B has a hydrophilic fiber aggregate piece 3 cut into a circular shape having a smaller area in the center of the upper surface of a circular cut hydrophilic fiber aggregate piece 2. The whole is covered with a rectangular fiber-bonded nonwoven fabric piece 4, and both ends 5 of the nonwoven fabric piece are wrapped around the tampon body 1.
It is joined by heat welding at the center of the upper surface.

The tampon body 1 shown in FIGS. 8A and 8B has a seventh
This corresponds to the fiber-bonded nonwoven fabric piece 4 shown in Figures A and B, whose corners are cut off to form an octagon.

The tampon body 1 shown in FIGS. 9A and B has a hydrophilic fiber aggregate piece 3 cut into a rectangular shape having a smaller area in the center of the upper surface of a hydrophilic fiber aggregate piece 2 cut into a rectangular shape. Overlapping,
The whole is covered with a rectangular fiber-bonded nonwoven fabric piece 4, and both ends 5 of the nonwoven fabric piece are joined by heat welding at the center of the upper surface of the tampon body 1.

The fiber aggregate pieces 2 and 3 are made of fibers such as cotton and rayon alone or in combination. The fiber-bonded nonwoven fabric piece 4 has a fineness of 3d or less and a basis weight of 7 to 35 g/cm, in consideration of the texture of the tampon surface and menstrual blood permeability.
m ² and density is preferably 0.01 to 0.3 g/cm ³ . The thinner the fibers of the nonwoven fabric piece 4, the smoother the texture, so it is preferable that the fibers be as thin as possible. However, with current spinning technology, it is difficult to obtain fibers of 0.7 d or less. If the following is used, for example, it consists of two thermoplastic polymer components that have poor adhesion to each other, and one component is separated into multiple layers that are more continuous in the fiber direction than the other component. Staple fibers, which are separable composite fibers of 1 to 5 d, may be divided 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 piece 4, one may be used that has a sheet-like form by intertwining the fibers and has a large number of independent openings 6 formed by distributing the fibers (No. 10). (see figure). Such a nonwoven fabric piece can be obtained, for example, by a known high-speed fluid jetting fiber entangling method, that is, by jetting a high-speed water jet onto a fiber-integrated web on a support having a large number of independent protrusions.
It can be obtained by a method of intertwining the fibers and simultaneously distributing the fibers at the protrusions. The opening 6 has an area of 0.25 to 100 mm ² and a porosity of 10 to that of the nonwoven fabric piece 4.
Preferably it is 50%.

As shown in FIGS. 1 and 2, such a tampon body 1 has a drawer string 7 folded in half.
Insert the folded end of the tampon into the center of the tampon body 1 and tie it. Using the tied part as a base point, and so that the joints 5 of both ends of the fiber accumulation piece 3 and the fiber-bonded nonwoven fabric piece 4 are located inside the flower. It is squeezed into a bud shape and pressed into a columnar body.

In addition, the fiber accumulation piece 2 is preferably 49 to 144 mm ² , and the fiber accumulation piece 3 is preferably 9 to 25 mm ² . The area of the fiber-bonded nonwoven fabric piece 4 located on one side of the tampon body 1 before compression molding and covering the fiber accumulation pieces 2 and 3 is the area of the fiber accumulation pieces 2 and 3.
The fiber aggregate piece 2,
This is necessary in order to prevent the edges of No. 3 from being exposed from the press-molded columnar body.

(Effect of the invention) According to the tampon of the present invention configured as described above, the first and second fiber aggregate pieces are completely covered with the fiber-bonded nonwoven fabric piece that is the exterior material, and Both ends of the piece are welded together at the center of the inner surface of the tampon body.
That is, since the first and second fiber aggregates are completely surrounded by the fiber-bonded nonwoven fabric pieces, the first and second fiber aggregates are exposed from the tampon body press-molded into a columnar body. The fibers of the second fiber accumulation piece do not fall off and remain in the vagina,
It is extremely hygienic, and there is no possibility that the fiber-bonded nonwoven fabric piece will delaminate from the second fiber assembly located on its inner surface, thereby impairing the rapid absorption of menstrual blood.

Further, the welded joint portion of the fiber-bonded nonwoven fabric piece is
Since it is located inside the tampon body, which is press-molded into a columnar body, the joint does not rub against the user's vaginal wall, causing discomfort or discomfort, or causing damage.

[Brief explanation of drawings]

The drawing shows an example of the tampon of the present invention.
Fig. 1 is a side view of the tampon, Fig. 2 is a perspective view showing the forming process, Fig. 3A, Fig. 4A, Fig. 5A, Fig. 6A, Fig. 7A, Fig. 8A, and Figure 9A is a developed plan view of the constituent fibers of the tampon body; Figure 3B;
Figure 4B, Figure 5B, Figure 6B, Figure 7B, Figure 8
Figures B and 9B are one end view of each of the above figures;
Figure 0 is a partial perspective view of another nonwoven fabric piece that is part of the constituent fibers of the tampon body. 1... tampon body, 2... first fiber accumulation piece,
3... Second fiber accumulation piece, 4... Fiber bonded nonwoven fabric piece, 5... Both ends (joint part), 7... Drawer string.

Claims (1)

[Claims for Utility Model Registration] A first fiber aggregate having hydrophilic properties; A tampon main body is constructed from a second fiber aggregate piece having a tampon body, a hydrophobic fiber-bonded nonwoven fabric piece covering the first and second fiber aggregate pieces, and one end of a drawer string is tied to the center of the tampon body, and one end of the drawer string is tied to the center of the tampon body. In a sanitary tampon that is press-molded into a columnar body with the binding part as a base point and the second fiber aggregate piece located inside and squeezed into a flower bud shape, the fiber-bonded nonwoven fabric piece: The fiber-bonded nonwoven fabric piece is formed to have an area larger than that of the first fiber aggregate piece, and the entire both sides of the superimposed first and second fiber aggregate pieces are attached to the central part of the inner surface of the tampon body at both ends of the fiber-bonded nonwoven fabric piece. The tampon is characterized in that the tampons are coated so that they are located and overlap each other, and the overlapping ends are welded and joined, and the compression molding is performed so that the joined part is located inside the columnar body.