JPH0467866B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to disposable diapers, disposable diaper covers, and similar wearing articles, and more particularly, the present invention relates to disposable diapers, disposable diaper covers, and similar wearing articles. The present invention relates to a wearing article comprising a side flap and a second side flap to which an elastic member for encircling the legs is attached.

(Prior Art) Conventionally, for example, in a disposable diaper, a highly flexible side flap is formed in the opposite side area, and an elastic member for the leg area of the side flap is attached, and the diaper is assembled into a pants shape when worn. is known and is in practical use.

Generally, the side flaps of such known diapers are formed by portions of a top sheet and a back sheet that cover the front and back surfaces of an absorbent core and extend outwardly from opposite side edges of the core. That is, it is formed from a portion of both continuous sheets.

(Problems to be Solved by the Invention) However, in the case of disposable diapers that need to be mass-produced at high speed, if the side flaps are formed from only a portion of the top sheet and back sheet, the following problems may occur, for example.

First, side flaps made of a different material than the top sheet and/or back sheet, e.g.
The side flaps are made of a material that is more breathable than the back sheet, and the effect of preventing stuffiness inside the article cannot be enhanced.

Second, when the article to be worn is a disposable diaper, if its side flaps are formed by a part of its water-permeable top sheet and water-impermeable back sheet, excreted fluid permeates and diffuses through the top sheet laterally and from the outer edges of the side flaps. Leak.

Therefore, an object of the present invention is to provide a disposable diaper that can solve the above-mentioned problems by forming a part of the side flaps separately from the main body of the product from a breathable and waterproof material and attaching an elastic member to the side flaps. Our goal is to provide wearable items such as:

(Means for Solving the Problems) The present invention for achieving the above object comprises an article main body having side flaps formed on opposite sides, and an elastic member for enclosing legs attached in the longitudinal direction of the side flaps. It is assumed that the items to be worn are prepared.

The main body of the article is composed of at least a water-impermeable back sheet and a top sheet stacked on top of each other leaving the opposite side area on the upper surface of the back sheet, and at least the opposite outer side area of the back sheet where the top sheet is not located. This is the first side flap.

A pair of second side flaps are formed from a breathable and waterproof sheet separately from the main body of the article. This each second
The elastic members are respectively attached to the inner edges of the inner sections of the side flaps, and the outer sections of each second side flap are respectively joined to at least each opposing outer section of the back sheet where the top sheet is not located. This causes the outer regions of the joined first and second side flaps to extend outward by an appropriate width from the boundary line between the inner and outer regions of the second side flaps.

In a preferred embodiment, the second side flap has vertically opposing ends of its inner area fixed to the article main body, and the vertically opposing ends of the fixed inner area side area and the boundary line serve as supports for the second side flap. The central portion between the opposing ends is made to stand up by the contraction force of the elastic member.

(Function) According to the wearing article of the present invention having the above configuration,
The second side flap rises toward the body by the contraction force of the elastic member located at the free inner edge of its inner region, and presses against the body relatively strongly, thereby sealing between the free inner edge and the body.

The second side flap is made of a breathable and waterproof material, and has an outer region directly joined to an outer region of the impermeable back sheet where the water permeable top sheet is not located, and has an outer region of the second side flap. and the outer area of the first side flap formed by a portion of the water-impermeable backsheet.

(Example) Taking disposable diapers as an example, referring to the drawings,
Examples of the present invention will be described as follows.

As shown in FIGS. 1 to 3, an elastic member 2 for waist circumference is attached to the upper surface of the central part of the vertically opposing ends of the water-impermeable backsheet 1, preferably via an adhesive, and The absorbent core 3 is superimposed on the upper surface of the back sheet 1 in between with an adhesive,
The elastic member 2 and the core 3 are covered with a water-permeable top sheet 4, which is slightly larger than the core 3, preferably with an adhesive interposed therebetween. Thus, a diaper main body 6 is formed having first side flaps 5 extending outward from the opposite side edges of the core 3.

As shown in FIG. 4, a second side flap 7 is formed separately from the main body 6 from a breathable and waterproof sheet that is considerably narrower than the back sheet 1. The second side flap 7 is formed by attaching an elastic member 8 for encircling the legs to one side of the sheet, preferably via adhesive, and folding back the side edge 9 to enclose it (FIG. 4A). Then, the upper and lower surfaces of the sheet are reversed and the area where the elastic member 8 is located is folded back to the outside (FIG. 4B), and the longitudinally opposing end 11 of the folded area (inner area) 10 is turned over to the non-folded area (outer area). 12 (see FIGS. 7 and 8). Furthermore, the second side flap 7
A tape fastener 13 for waist circumference is attached to one end in the longitudinal direction opposite to the side where the elastic member 8 is located, preferably with an adhesive, before or after folding back the inner region 10.

As shown in FIGS. 5 and 6, the lower surface of the outer region 12 of the second side flap 7 is joined to the upper surface of the first side flap 5 of the main body 6, preferably by means of an adhesive (see FIGS. 7 and 6). (See Figure 8).
By cutting out a region 15 outside the line indicated by the chain line 14 in FIG. 5 out of this joining region, the shapes of the first and second side flaps 5, 7 are formed to fit around the legs of the body. be.

The back sheet 1 may be made of a breathable plastic film or a laminate sheet of the film and non-woven fabric, the elastic members 2 and 8 may be made of polyurethane foam, rubber, or a plastic film that shows shrinkage when heat treated, etc. The top sheet 4 may be made of:
Preferably, the second side flap 7 is made of a nonwoven fabric, such as a breathable plastic film, a laminate sheet of the film and a nonwoven fabric, or a water-repellent nonwoven fabric.

Although not shown, the opposite side of the top sheet 4 may be rolled into the opposite side of the core 3.

In the diaper constructed as described above, when the elastic member 8 is contracted, the inner area 10 of the second side flap 7 is compressed, as shown in FIGS. 7 and 8.
stands upright with the boundary line 16 as a support line except for the vertically opposing ends 11 thereof.

(Effects of the Invention) According to the present invention, as described above, since the main body of the article having the first side flap on the opposite side and the second side flap are formed separately, the second side flap has a higher ventilation than the first side flap. We measure the breathability of goods by using materials with excellent properties.
The effect of preventing stuffiness inside the article can be enhanced.

Since no water permeable top sheet is interposed between the outer area of the first side flap and the outer area of the second side flap, in other words, the outer area of the former and the outer area of the latter are directly joined. has a waterproof or water-impermeable property that prevents excreta from permeating and diffusing, so excreta is prevented from permeating and diffusing between the outer areas of the former and the latter, and therefore, the water from the outer edges of both outer areas of the floor is No excretory fluid oozes out.

As mentioned above, if the structure is such that no water permeable top sheet is interposed between the outer area of the first side flap and the outer area of the second side flap, the width of the water permeable top sheet is formed to be narrower than the width of the impermeable back sheet. Therefore, the material cost for the former can be reduced.

[Brief explanation of the drawing]

Figures 1 to 5 are plan views of the forming process of a disposable diaper showing an embodiment of the present invention, Figure 6 is a plan view of the completed diaper, Figure 7 is a perspective view of the completed diaper, and Figure 8 is the completed diaper. It is a partial perspective view of the side flap part of a diaper. 1: back seat, 4: top seat, 5: first side flap, 7: second side flap,
8: Elastic member, 10: Inner area, 11: Vertically opposed end, 12: Outer area.

Claims (1)

[Scope of Claims] 1. A wearing article comprising an article main body having side flaps formed on opposite sides, and an elastic member for encircling legs attached in the longitudinal direction of the side flap, wherein the article main body is at least made of a water-impermeable material. a top sheet that is stacked on top of the back sheet with an opposing side area left on the upper surface of the back sheet, and at least the opposite outer side area of the back sheet where the top sheet is not located is used as a first side flap, and the main body of the article Separately, a pair of second side flaps are formed from a breathable and waterproof sheet, the elastic member is attached to the inner edge of the inner area of each of the second side flaps, and the outer area of each of the second side flaps is covered with the top sheet. and respectively joining at least each opposing outer section of said backsheet, thereby extending the outer sections of said joined first and second side flaps outwardly from the boundary between said inner and outer sections of said second side flaps. The article is characterized in that the width is appropriately extended. 2. The second side flap has the vertically opposing ends of its inner area fixed face down on the article main body, and the central part between the opposing ends using the fixed vertically opposing ends of the inner area and the boundary line as supporting parts. The article according to claim 1, wherein the article is made to stand up by the contraction force of the elastic member.