JPH0744941B2 - Simple three-dimensional diaper - Google Patents

Description

TECHNICAL FIELD OF THE INVENTION The present invention relates to a simple and effective diaper for children and incontinent persons.

○ Conventional technology and problems Conventional diapers are constructed by trimming both sides in the longitudinal center as recesses in order to improve the wearability of the crotch part during use and to secure the waist size for mounting the diaper. However, not only is the material of this trim cut portion wasted, but the same expensive material is used for the waistline portion as well, making the product expensive.

In addition, the cost of trim cutting in the diaper manufacturing process was passed on to the product price.

OBJECTIVE OF THE INVENTION The present invention is a reflection on a known diaper that tends to go against resource saving by adding more accessories than necessary if competing for the interest of consumers. Compared to the time when disposable diapers first appeared, it uses raw materials, design, and manufacturing technology that are far advanced, and is simple and lightweight. The function of the diaper itself can be effectively used. The diaper effectively reduces the economic burden on consumers and saves resources. The purpose of the present invention is to simplify the manufacturing process of bonnet diapers.

In the present invention, the top sheet and the bottom sheet are formed into a shape close to a quadrangle, and the first and second bent pieces are formed on both sides of the sheet by two-fold folding. An adhesive is applied between the bent pieces in an expanded state to attach a thread rubber to form a diaper body, and an elastic belt longer than the width of the diaper body is elastically extended to form upper and lower ends of the diaper body. We provide a simple three-dimensional diaper that is fixed to the body and used as a wearing belt.

Examples The present invention will be described below based on examples shown in the drawings.

Referring to FIG. 1, the portions X on both sides of a rectangular impermeable sheet 3 ', such as a nonwoven fabric formed of a hydrophobic material such as synthetic fiber, are folded inward along a folding line a (see FIG. 1B). The folded portion is folded back along the folding line b (see FIG. 1C). Thus, the first bent piece 4 and the second bent piece 5 are formed. Fold line b between the folds formed by both bent pieces 4 and 5.
Adhesive is applied to the stretched rubber thread 8 so as to be close to and parallel to, and sandwiched (see FIG. 1D) to form the top sheet 3 of the diaper.

Referring to FIG. 2, the bottom sheet 1 is formed of a water-impermeable sheet such as a polyethylene film having a trapezoidal shape which is almost the same as the contour of the top sheet 3, and the urine excreted by the human body is absorbed and retained in the center thereof. The absorbent body 2 which can be formed is formed to be slightly narrower than the width of the folding line a of the top sheet 3 and mounted, and the top sheet 3 is stacked thereon.

The top sheet 3 and the bottom sheet 1 are fixed to the absorbent body 2 by adhering the top sheet 3 and the bottom sheet 1 on both side edges of the absorbent body with an adhesive H ₁ such as hot melt, and further on both sides of the first fold line.
The diaper body 10 is formed by bonding H ₂ , H ₃ and both sides H _{4 of the} sheet.

Elastic bands such as a polyurethane band are stretched on the upper and lower sides of the diaper body 10 and an adhesive such as hot melt is applied to the diaper body 10 and then fixed to form a wearing belt 7 (see FIG. 2). The mounting belt 7 has a fastening portion using hot melt or the like.
It is known to form 12.

In FIG. 2, a urenta sheet is used, but in this case, as shown in FIG. 3, one elastic tape 9 is divided into two parts in a zigzag manner in the longitudinal direction and divided into two parts, which are fixed to the upper and lower ends of the diaper body 10. The shape was designed so that the navel would not be pressed during mounting.

FIG. 4 shows an example in which an elastic belt is used instead of the urethane sheet, which is formed by coating hot rubber in a stretched state with several rubber threads 7a and then applying the melted tape to a supporting tape 7b such as polyethylene.

As an application of FIG. 2, FIG. 5 shows an example in which the polyurethane band 7'is fixed to both sides of the diaper body in consideration of the wearer's skin feel.

EFFECTS OF THE INVENTION The present invention eliminates waste of material by forming a diaper body by using a rectangular top sheet and bottom sheet, and has a three-dimensional structure by two-stage folding on both sides and adhesion of rubber thread. Thus, the manufacturing process can be simplified, and the product price of this kind of low-priced product can be provided at a lower cost.

In addition, since the wearing belts are attached to the upper and lower ends of the diaper body and the rubber threads are attached to both sides, the elastic action of the elastic body makes the diaper body's natural state as a whole concave shape to absorb body fluids. ， Has the effect of improving anti-wetting property.

[Brief description of drawings]

FIG. 1 is an explanatory view of work steps of a main body diaper in manufacturing a simple three-dimensional diaper according to the present invention. FIG. 2 shows a simple three-dimensional diaper in which a mounting belt is formed on the upper end and the lower end of the main body diaper. FIG. 3 is an explanatory view showing a method of dividing the elastic tape into two to form a mounting band. FIG. 4 shows a second embodiment of the present invention, FIG. 4a is a plan view,
FIG. b is a partial vertical cross-sectional view in the longitudinal direction in plan view. FIG. 5 shows a third embodiment of the present invention, FIG. 5a is a plan view,
FIG. b is a partial vertical cross-sectional view in the longitudinal direction in plan view. 1 ...... Bottom sheet 2 ...... Absorber 3 ...... Top sheet 6 ...... Thread rubber 7 ...... Wearing belt 10 ...... Diaper body a, b ...... Folding line

Claims (1)

[Claims] 1. A diaper in which a main portion is formed by sandwiching an absorbent body composed mainly of matte pulp or the like between a water-impermeable back sheet and a hydrophobic and water-permeable top sheet. Use a sheet that is wider than the absorber, and use a straight line that is inclined to the side edge of the sheet so that the left and right sides of the part that covers the absorber are the inside of the sheet and the folding width is smaller at the upper end and larger at the lower end. Fold inward at the first fold line, and further fold back the folded portion in the direction of the first fold from the second fold line to form a first bent piece and a second bent piece. Formed by adhering thread rubber coated with an adhesive in a stretched state parallel to the second fold line of the folds that are in contact with the back fold, and the back sheet has a trapezoidal shape almost equal to the contour of the top sheet. , At least the topsheet and backsheet The absorbent body is fixed by bonding with an adhesive in the vicinity of both edges of the body, and the diaper body is formed by bonding on both sides of the first fold line and both sides of the sheet to form the diaper body. A simple three-dimensional diaper in which elastic belts longer than the width are fixed to the upper and lower ends of the diaper body with the elastic body stretched to form a wearing belt.