JPH0244542B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a sanitary napkin and a method for manufacturing the sanitary napkin.

[Conventional technology and its problems] Conventional sanitary napkins are mainly manufactured from pulp or rayon and have an absorbent material that absorbs moisture and menstrual blood, and a waterproof material that repels moisture and menstrual blood to prevent it from leaking outside. It is made of wood and waterproof polylaminate, making it an integrated structure. Various studies have been conducted to prevent moisture, menstrual blood, etc. from leaking from the sides during use, but there are problems in that sanitary napkins tend to wrinkle vertically during use, making them uncomfortable to use, and also preventing leakage from the sides. There was a problem that it could happen. Therefore, it has a good usability and is easy to use.
Moreover, there is a demand for a sanitary napkin that does not leak from the side, is easy to manufacture, and can be manufactured at low cost.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and provide a sanitary napkin that is comfortable and easy to use and does not leak from the side, and a method for manufacturing the sanitary napkin.

[Means for Solving the Problems] In order to solve the above problems and achieve the purpose of the invention, the sanitary napkin and the method for manufacturing the sanitary napkin according to the present invention are characterized by being configured as follows. . That is, the first aspect of the present invention is to arrange an absorbent body formed by interposing a polymer absorbent between the absorbent materials and wrapping it with a nonwoven fabric from the outside and forming an I-shape in the longitudinal direction, and a waterproof material in a layered manner, A sanitary napkin characterized in that only the longitudinal ends of an absorbent material and a waterproof material are fixed, and the second aspect of the present invention is a sanitary napkin in which a polymer absorbent is interposed between the absorbent material, and a nonwoven fabric is inserted from the outside. The first step is to form an absorbent body wrapped in an I-shaped material in the longitudinal direction, and then cover at least one side of the waterproof paper with polylaminate paper, and then glue or fuse the periphery of the waterproof paper and the polylaminate paper to form a waterproof material. A method for producing a sanitary napkin, comprising: a second step of forming a sanitary napkin, and a third step of stacking the absorbent body obtained in the above two steps and the waterproof material and fixing only both ends in the longitudinal direction. .

[Examples] The present invention will be explained in detail below using examples shown in the drawings. FIG. 1 is a front view of one embodiment of the sanitary napkin according to the present invention, FIG. 2 is a back view of the sanitary napkin, and FIG. 3 is a sectional view taken along the line A--A in FIG. 1. Here, 1 is an absorber, 11 is an absorbent, 12 is a polymer absorbent, and 13
2 is a nonwoven fabric, 2 is a waterproof material, 21 is a waterproof paper, 22 is a polylaminated paper, 3 is a fixing part, and 4 is a fixing tape.

The absorbent body 1 is formed by laminating absorbent materials 11 such as absorbent paper, interposing a polymer absorbent 12 such as a powdered polymer or sheet polymer between the absorbent materials 11, and wrapping a nonwoven fabric 13 or the like from the outside. The absorbent body 1 seals the private parts and moves freely as one with the body. Furthermore, if the absorbent body 1 is formed into an I-shape in the longitudinal direction as shown in FIG. 1, that is, if it is cut into an I-shape from the center or about one-third of the entire length, it will fit well in the private area of the crotch. It becomes like this. The absorbent material 11 is mainly an absorbent paper made of pulp or rayon that absorbs water and menstrual blood, and the polymer absorbent 12 is a polymer compound that absorbs and retains water, such as cross-linked Examples include sodium polyacrylate that is loosely cross-linked with an agent. Its shape may be powder, sheet, or thread. Also, I
The shaped cut is wrapped with absorbent material 11 before being wrapped with non-woven fabric 13.
You can also wrap it up and then cut it into an I shape. When the absorbent material 11 etc. are wrapped in the nonwoven fabric 13 and then cut into an I shape, the cut ends are glued or fused after the cutting to prevent fraying.

By cutting the absorbent material 11 into an I-shape, it can be fitted well to the private parts, and since it seals the private parts in the longitudinal direction, it functions just like a tampon. That is, the sanitary napkin of this embodiment is a sanitary napkin that has two functions: a sanitary napkin and a sanitary tampon.

The absorbent body 1 is fixed to the waterproof material 2 only at fixed portions 3 at both ends in the longitudinal direction. There are various fixing methods, but adhesive or fusion is suitable. Since the absorbent body 1 and the waterproof material 2 are fixed in this way, the absorbent body 1 and the waterproof material 2 have different functions in the central portion.
That is, the absorbent material 1 fits the skin and moves freely to prevent moisture, menstrual blood, etc. from leaking out in all directions, and the waterproof material 2 is fixed to underwear such as shorts with the fixing tape 4 to prevent side leakage, etc. prevent.

The waterproof material 2 is formed by covering at least one side of waterproof paper with polylaminate paper, and further adhering or fusing the waterproof paper and the polylaminate paper around the edges. Third
In the embodiment shown in the figure, the portion of waterproof paper 21 located on the outside of the napkin is covered with polylaminated paper 22, folded slightly inward, and bonded or fused to form the napkin. The waterproof paper 21 is made of absorbent paper mixed with a waterproof resin, such as a waterproof silicone resin, and the polylaminated paper 22 is made of nonwoven fabric, cloth, paper, etc. laminated with a thin film such as polyethylene resin. be. As described above,
Since waterproof paper 21 is placed between the napkin and the absorbent body 1, and polylaminated paper 22 is placed on the outside of the napkin, leakage etc. are completely prevented.

In this embodiment, as shown in the drawings, the absorbent body 1 and the waterproof material 2 are overlapped and fixed only at both ends in the longitudinal direction by a fixing portion 3. The fixing method may be adhesive or fusion. Since both ends in the longitudinal direction are fixed in this way, the central part of the absorbent body 1 can move freely as one with the private parts of the body, preventing moisture, menstrual blood, etc. from leaking and spreading in all directions. Prevents side leakage, etc. Note that a fixing tape 4 is provided on the outside of the waterproof material 2 as shown in FIG.
The fixing tape 4 fixes the sanitary napkin to underwear such as shorts and prevents side leakage.

Next, a method for manufacturing a sanitary napkin according to the present invention will be explained in detail with reference to Examples.

In the first step, the polymer absorbent 1 is placed between the absorbent 11.
In this step, the absorbent body 1 is formed by wrapping the absorbent body 1 with the nonwoven fabric 13 from the outside with the absorbent body 2 interposed therebetween. For example, as shown in FIG. 3, an absorbent material 11 is placed, and powdered,
A sheet-like or thread-like polymer absorbent 12 is placed, an absorbent material 11 is placed thereon, and then wrapped with a nonwoven fabric 13 from the outside. I in the longitudinal direction of the absorber 1
By cutting it into a shape, it can fit well into the private area and seal the private area in the longitudinal direction. The I-shaped cut may be made by cutting the absorbent material 11 etc. into an I-shape before wrapping it with the non-woven fabric 13.
It is also possible to wrap the absorbent material 11 and the like in the wrapper and then cut it into an I-shape. In the latter case, after cutting, the cut edges are glued or fused to prevent fraying.

The second step is to cover one side of the waterproof paper with polylaminated paper, and further adhere or fuse the periphery of the waterproof paper and the polylaminated paper to form a waterproof material. In the embodiment, one side of the waterproof paper 21 is covered with polylaminated paper 22, and the polylaminated paper 22 is further turned inside the other side of the waterproof paper 21 and folded in a little.
The waterproof material 2 is formed by gluing or fusing the folded portions. Here, the polylaminated paper 22
and waterproof paper 21, and polylaminate paper 2.
2 may be bonded or fused together without being folded inward.

The third step is a step in which the absorbent body 1 obtained in the above two steps and the waterproof material 2 are stacked and fixed only at both ends in the longitudinal direction. Fixation is performed by gluing or fusing.

[Effects of the Invention] Since the sanitary napkin obtained by the sanitary napkin and the sanitary napkin manufacturing method according to the present invention is configured as described above, it has the following effects.

The sanitary napkin according to the present invention or the sanitary napkin obtained by the method for manufacturing a sanitary napkin according to the present invention is made by separately manufacturing the absorbent body 1 and the waterproof material 2, with the absorbent body 1 on the front side, and the sanitary napkin obtained by the sanitary napkin manufacturing method according to the present invention. Since both longitudinal ends are fixed with the material 2 on the back side, the central part of the absorbent body 1 can move freely as one with the local part of the body, and the absorbent body 1 can perform 100% of its function. Waterproof material 2 has 100% waterproof function.
It is possible to make the most of it.

More details are as follows. Since existing sanitary napkins are simply placed over a cup filled with water, the napkin bleeds in all directions and causes side leakage. On the other hand, the sanitary napkin according to the present invention is formed by cutting the absorbent body into an I-shape, so that the I-shape absorbent body cut into a water-filled cup has a shallow lid. Even if the cup filled with water is moved, the absorbent body is not integrated with the waterproof material, so it can be moved with the lid on, so it can be used for a long time without worrying about smearing in all directions or side leakage. It is possible.

Furthermore, since the method for manufacturing the sanitary napkin according to the present invention is configured as described above, it is easy to manufacture and can also be manufactured by an automatic machine, so it has the effect that it can be manufactured at low cost. .

Furthermore, after use, fold the side with the fixing tape to the top of the back inward to make a third fold.
It is convenient because the other side can be attached to the fixing tape from above to wrap around and store the dirty area. Here, two fixing tapes may be arranged in parallel as shown in FIG. 2, or may be attached in a shape such as an inverted U-shape. When installed in an inverted U shape, there is an advantage that it is easy to seal when storing.

[Brief explanation of drawings]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be explained in detail below using embodiments shown in the drawings. FIG. 1 is a front view of one embodiment of the sanitary napkin according to the present invention, FIG. 2 is a back view thereof, and FIG. 3 is a cross-sectional end view taken along the line A--A in FIG. 1. 1...Absorber, 11...Absorbent material, 12...Polymer absorbent, 13...Nonwoven fabric, 2...Waterproof material, 21
... Waterproof paper, 22 ... Polylaminated paper, 3 ... Fixed part, 4 ... Fixed tape.

Claims (1)

[Scope of Claims] 1. An absorbent body formed by interposing a polymeric absorbent between the absorbent materials, wrapped with a nonwoven fabric from the outside and formed into an I-shape in the longitudinal direction, and a waterproof material are stacked, and the absorbent body A sanitary napkin characterized in that only the longitudinal ends of the waterproof material are fixed. 2. A first step of interposing a polymer absorbent between the absorbent materials, wrapping it with a nonwoven fabric from the outside and forming an I-shaped absorbent body in the longitudinal direction, and covering at least one side of the waterproof paper with polylaminated paper, and further A second step involves gluing or fusing the periphery of the waterproof paper and polylaminate paper to form a waterproof material, and a third step involves stacking the absorbent body and waterproof material obtained through the above two steps and fixing only the longitudinal ends. A method for manufacturing a sanitary napkin, comprising the steps of: