JP2528982Y2 - Body fluid absorption article - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention relates to a pants-type body fluid absorbing article such as a disposable diaper or training pants, in which an absorbent panel is interposed between a top sheet and a back sheet.

(Prior art and problems to be solved by the invention) Conventionally, for example, the fixing of an absorbent panel in a disposable diaper is performed by using fluff pulp as a main material with an adhesive applied to the inner surface of the front and back sheets continuously and in a relatively large amount. The tissue paper superimposed on the upper surface of the panel formed by loosely hardening the absorbing material to be formed is bonded to the inner surface of the topsheet, and the tissue paper superimposed on the lower surface of the panel is bonded to the inner surface of the backsheet. . However, the tissue paper has a very low tear strength and is merely superimposed on the fluff pulp based absorbent panel. Easily torn or peeled from the absorbent panel. As a result, the absorption panel loses its shape or moves between the front and back sheets. In this case, not only the fitting property and the feeling of wearing are deteriorated, but also the body fluid cannot be sufficiently absorbed at the normal position of the absorbing panel, so that the body fluid leaks.

On the other hand, when the absorbent panel absorbs excrement and increases its weight, the worn article slips down, the fit of the article to the body decreases, and the excrement leaks, and it is difficult for the wearer to walk in a natural state. It can be.

The present invention prevents the absorption panel from being out of shape and moving, and also allows a part of the elastic member for the leg opening to cross the crotch area and connect the two leg openings to lift the absorption panel. An object of the present invention is to provide a structured body fluid absorbing article.

(Means for Solving the Problems) According to the present invention for achieving the above object, an absorbent panel is interposed between front and back sheets while leaving their peripheral portions therebetween, and at least in a partial area where they meet each other. The front and back sheets are joined together and the top sheet and the absorbent panel are joined together, and between the front and back sheets along cutout edges formed on both side edges of a crotch area located between front and rear areas of the front and back sheets. Stretchable elastic members for leg openings, and stretchable elastic members for trunk openings are respectively arranged between the front and back sheets along the longitudinal ends of the front and rear areas to form a laminate,
By vertically folding the laminate into two so that the topsheet is located inside and joining both sides of the front and rear sections, a pants type having a trunk opening and a pair of leg openings is formed. The configured body fluid absorbing article has the following features.

The absorbent panel is formed by mixing fluff pulp, thermoplastic fibers, and water-absorbing polymer particles and integrally molding the mixture under compression and heating.

At least a part of the front and rear sections excluding the corresponding portions of the front and rear sections in which the elastic members for the leg openings and the trunk opening are arranged have elasticity.

The leg elastic member for the leg opening is composed of a first and a second member made of a plurality of elastic yarns, respectively, and the first and second members are curved in a substantially U-shape facing the trunk opening. A central portion of each of the generally U-shaped portions is traversed through the crotch region and located on the lower surface of the absorbent panel, and each of the substantially U-shaped side portions of the first member is substantially half of the leg opening. And each of the substantially U-shaped side portions of the second member is respectively arranged along a substantially rear half of the leg opening, and the plurality of at least upper portions of each of the substantially U-shaped side portions are connected to each other. Be spaced apart in parallel.

The top sheet and the panel are intermittently joined in the vertical and horizontal directions, and at least the top sheet and the back sheet in the peripheral region of the panel are intermittently joined in the vertical and horizontal directions.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings, taking a disposable pants-type diaper as an example.

FIG. 1 shows a perspective view of the diaper 1. FIG. The diaper 1 has a pair of leg openings 2 and one trunk opening 3, and includes elastic members 4 and 5, respectively.

FIG. 2 is an exploded perspective view of the diaper 1. FIG. Diaper 1
Further includes a stretchable elastic / liquid-permeable top sheet 6, a stretchable elastic / liquid-permeable backsheet 7, and an absorbing panel 8 interposed therebetween except for their peripheral edges. Front and back sheet
Cut edges 13 and 14 for leg openings are formed on both side edges of the crotch region 12 located between the front and rear regions 10 and 11 of 6,7. Notch 1
Stretchable elastic members 4 and 5 are arranged in an extended state at 3, 14 and the longitudinal end 16, respectively.

The elastic member 4 for leg opening is composed of a plurality of first members 4A and a plurality of second members 4B. The first and second members 4A and 4B are configured such that a plurality of them constituting the first and second members 4A and 4B are curved in a substantially U-shape facing the body opening 3 in a parallel-separated state, and the substantially U-shaped central portions 4A2 and 4B2 are attached to any member. The substantially U-shaped side portion extending from the intersection to the outer end of the absorbent panel 8 without adhesion to be positioned on the lower surface of the central area of the absorption panel 8 and to have the vicinity of both ends thereof crossed near the center of the cutout edge 14.
4A1 and 4B1 are adhered to the inner surface of the front and / or back sheet along the cut edges 13 and 14 with an adhesive.

The elastic member 5 for the trunk opening is adhered to the inner surface of the front and / or back sheet with an adhesive (not shown) along the longitudinal ends 16 of the front and rear sections 10,11.

The elastic members 4 and 5 are interposed between the front and back sheets 6 and 7 at the above-mentioned portions, and the outer peripheral edges of the front and back sheets 6 and 7 are also joined by an adhesive or a heat seal.

3 and 4 show plan views of the inner surfaces of the front and back sheets 6, 7, respectively. The absorption panel 8 is located in regions 18a, 18b indicated by chain lines 17a, 17b shown on the inner surfaces of the front and back sheets 6, 7. Adhesive 19 having a close dot interval is applied along the area outside the chain lines 17a and 17b, which are the front and back sheets 6 and 7 along the periphery of the absorption panel 8. Therefore, the front and back sheets 6,
7 is joined in the peripheral region of the absorbing panel 8 which meets each other, so that the absorbing panel 8 has the regions 18a, 18b of the front and back sheets 6, 7 in which the regions 18a, 18b are joined by an adhesive 19 defining an annular shape. And is fixed so that it cannot move vertically and horizontally. The adhesive 19 may have another pattern as long as it is intermittent in the vertical and horizontal directions, and it is sufficient if the adhesive 19 is applied to one of the front and back sheets 6 and 7. The outer region 20 of the chain lines 17a and 17b is also the front and back sheets 6,7.
May be joined with an adhesive (not shown) applied in a dot-like manner at appropriate intervals to such an extent that the stretchability is not so much impaired.

As shown in FIG. 5, the area 18a of the topsheet 6 has a dot-to-dot spacing so that it does not rise above the top surface of the absorbent panel 8 and prevent the excreted liquid from penetrating inward in this area. It is bonded to the upper surface of the panel with an adhesive 21 applied in an enlarged manner.

Although not shown, a multi-directional elastic liquid barrier sheet made of plastic or synthetic rubber may be superposed on the inner surface of the back sheet 7 if necessary. It will be applied to sheet 6 or the barrier sheet. Also, in this case, since the back sheet 7 and the barrier sheet keep their elasticity sufficiently, they are not joined except for their outer peripheral edges at all, or intermittently with an adhesive such as dot-shaped coating. It is preferable to join them.

The laminated body as the diaper fabric configured as described above,
The pants-type diaper 1 shown in FIG. 1 is formed by folding the two portions in the longitudinal direction at the center thereof and joining both side edges thereof by heat sealing means. The front and back sheets 6 and 7 are made of a multidirectional stretchable and water-permeable nonwoven fabric in which crimped fibers are entangled by a liquid jet process, and the panel 8 is made of fluff pulp, thermoplastic fibers and water-absorbing polymer particles so as not to lose their shape. Mixed with
If necessary, those coated with tissue paper or the like, compressed, and integrally molded under heating to impart shape retention are used, respectively.

For the elastic members 4 and 5, for example, two or more thread-like elastic members (elastic elastic yarns) are used. As the stretchable elastic members 4 and 5, tape-like members having a relatively large width with respect to the thickness are used. For example, when the elastic members are curved into a substantially U-shape having a larger curvature than the bow shape, the substantially U-shaped curved portion ( When the continuous portion between the side portion and the central portion and the portion in the vicinity thereof are twisted, the deformation due to the twist is greater than in the case of the present invention which is a thread-like material, and therefore the inner surface of the sheet is (The inner surface of the front or back sheet), the bulge to the front surface becomes large, and the local pressure and irritation to the skin becomes strong, which is not preferable. Further, even when the elastic members 4 and 5 are adhered to the sheet via an adhesive, if such deformation is large, the bonding property is deteriorated and the elastic members are reduced.
4, 5 are easily separated from the sheet, which is not preferable in this respect.

(Effects of the Invention) The article according to the present invention has the following effects.

(1) The absorption panel is made by mixing fluff pulp, thermoplastic fiber, and water-absorbing polymer particles and integrally molded under compression and heating. There is no danger of causing a shape loss which may cause a liquid to leak.

(2) Since at least a part of the front and rear sections other than the front and rear sections in which the stretchable elastic members for the leg opening and the trunk opening are disposed, the front and rear sheets and the absorbing panel are also provided. And between the top sheet and the back sheet are bonded with an adhesive provided intermittently in the vertical and horizontal directions, so that the stretch elasticity of the part imparting the stretch elasticity is the front and back sheets and It is exhibited without much hindrance by the restraint by the panel, and this portion also elastically adheres well to the body, so that the fit of the article to the body can be further improved.

(3) Since the top sheet and the back sheet are intermittently joined in the vertical and horizontal directions in the region along the periphery of the panel, the movement of the absorption panel between the front and back sheets in the vertical and horizontal directions is restricted. For this reason, in conjunction with the integral molding of the absorption panel, the panel collapses due to its movement,
It is possible to more effectively prevent the discomfort, the leakage of excreted liquid, and the decrease in the fit of the article to the body due to the shape loss.

(4) First and second elastic members for leg openings
The member is curved in a generally U-shape facing the torso opening, with each generally U-shaped central portion traversing the crotch area and positioned on the lower surface of the absorbent panel, and each substantially U-shaped side of the first member. Since the portion is arranged substantially in the front half of the leg opening and the substantially U-shaped side portions of the second member are respectively arranged substantially in the rear half of the leg opening, the above-mentioned effect (2) is obtained. Therefore, when the article is worn, the first and second members always hold the absorbent panel in a state in which the elastic members for the legs and the torso opening and the elastic members in the front and rear areas serve as support and fixing parts for the body of the article. Acts like lifting. Therefore, even if the absorption panel absorbs excrement and increases weight,
The weight is less likely to cause the article to slip down, thereby reducing the fit of the article to the body, causing excretion to leak, and making it difficult for the wearer to walk.

(5) Since the elastic elastic yarns constituting the first and second members at least in the upper part of each of the substantially U-shaped side parts are separated in parallel, the expansion of the elastic elastic member in the upper part of the leg opening. As the stress is dispersed, the upper portion is pressed against the skin in a relatively wide area, so that the skin is less likely to be marked or damaged. In particular, since the elastic member is composed of a plurality of elastic yarns, the deformation caused by the twist is small and the deformation is large compared to the case of, for example, a tape. There is little local pressure or irritation on the skin.

[Brief description of the drawings]

The drawings show a disposable pants-type diaper according to an embodiment of the present invention, wherein FIG. 1 is an external perspective view, FIG. 2 is an exploded perspective view, FIG. 3 and FIG.
FIG. 5 is a sectional view showing a state in which the absorption panel is covered with front and back sheets. 4: Elastic elastic member for leg opening 4A: First member 4B: Second member 4A1, 4B1: Side part 4A1, 4B1: Central part 5: Elastic elastic member for trunk opening 6: Top sheet 7: Back sheet 8: Absorption panel

Claims (2)

(57) [Scope of request for utility model registration] An absorbent panel is interposed between front and back sheets while leaving their peripheral portions therebetween, and at least a part of the front and back sheets and the top sheet and the absorption panel in a partial region where they are mutually associated are connected. The elastic members for leg openings are joined between the front and back sheets along cutout edges formed on both side edges of the crotch area located between the front and back areas of the front and back sheets. Stretchable elastic members for the trunk opening are respectively arranged between the front and back sheets along the longitudinal end of the area to form a laminate, and the laminate is vertically oriented so that the top sheet is located inside. In a wearing body fluid absorbing article configured in a pants-type having a trunk opening and a pair of leg openings by joining both sides of the front and rear sections to the front and rear sections, the absorption panel is formed of fluff pulp and heat. Plastic fiber The fibers and the water-absorbing polymer particles are mixed and integrally molded under compression and heating, and the front and rear sections of the front and rear sections excluding the front and rear sections where the elastic members for the leg openings and the trunk openings are arranged are arranged. At least a part of the elastic member is also provided with elasticity, and the elastic member for the leg opening is composed of first and second members each composed of a plurality of elastic yarns. Curved into a generally U-shape facing the torso opening, with the central portion of each of the generally U-shaped portions traversing the crotch area and positioned on the lower surface of the absorbent panel; Each of the substantially U-shaped side portions of the second member along the substantially rear half of the leg opening, and the substantially U-shaped side portions of the second member. Said extension at least in the upper part of each side part of The compression elastic yarns are spaced apart in parallel, and the surface sheet and the panel are intermittently joined in the vertical and horizontal directions, and at least the vertical and horizontal directions between the surface sheet and the back surface sheet in the peripheral region of the panel are provided. The article characterized by being intermittently joined in a direction. 2. The article of claim 1 wherein said generally U-shaped central portions of said first and second members intersect each other near their ends.