JPH01298202A - Simple three-dimensional diaper - Google Patents

Abstract

PURPOSE:To readily obtain the subject diaper of three-dimensional structure avoiding waste of material by sticking rubber threads coated with adhesive on both bent pieces formed by turning in two rows on both side parts of a sheet and fixing elastic belts on both end parts of top and bottom of main body of the diaper. CONSTITUTION:Bent pieces 4 and 5 are formed by turning in two rows on both side parts of top sheet 3 and rubber threads 8 coated with adhesive are inserted between pleats generated by the bent pieces 4 and 5. An absorbent 2 is loaded between bottom sheet 3 and top sheet 1, then the both sheets 1 and 3 are adhered with adhesive H1 and also it the points H2, H3 and H4. Elastic bands are adhered on top side and bottom side of main body of resultant diaper 10 in stretched state to make fixing belts 7.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a simple and effective infant and incontinent diaper.

O Conventional Technology and Problems Conventional diapers are constructed by trim-cutting both sides of the center in the longitudinal direction as recesses in order to improve the fit of the crotch part during use and to ensure the size around the waist to which the diaper is worn. However, not only is this trim cut material wasted, but the same expensive material is used for the torso area, making the product expensive.

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

Q: Purpose of the Invention The present invention is a reflection on the conventional diapers, which tend to add more accessories than necessary in order to compete for consumer attention, going against the grain of resource conservation. Utilizing raw materials, design, and manufacturing technology that are far more advanced than when disposable diapers first appeared, we are able to reduce the economic burden on consumers and conserve resources by creating diapers that are simple and lightweight, yet still perform their functions effectively. The purpose is to measure the manufacturing process of diapers and to simplify the diaper manufacturing process.

OMeans for achieving the above object The present invention provides a top sheet and a bottom sheet having a shape close to a rectangular shape, and forming a first folded piece and a second folded piece on both sides of the sheet by two-stage folding. A diaper body is formed by applying adhesive between the folded pieces in a stretched state and attaching a rubber thread, and an elastic belt longer than the width of the diaper body is attached to the upper and lower ends of the diaper body while the elastic body is stretched. To provide a simple three-dimensional diaper that is fixed to a part and used as a mounting belt.

○Example The present invention will be described below based on embodiments shown in the drawings.

Referring to FIG. 1, fold the portions X on both sides of a rectangular water-impermeable sheet 3' such as a nonwoven fabric made of a hydrophobic material such as synthetic fibers inward at #la (see the opening in FIG. 1), and then Fold the folded part Y and point it back outward at isb (see the opening in Figure 1). In this way, the first bent piece 4 and the second bent piece 5 are formed. The top sheet 3 of the diaper is made by applying adhesive to the stretched rubber thread 8 and sandwiching it between the pleats formed by the folded pieces 4.5, close to and parallel to the fold line (see the opening in Figure 1). shall be.

Referring to FIG. 2, a bottom sheet 1 is formed of a moisture-impermeable sheet such as a polyethylene film having a trapezoidal shape almost the same as the outline of the top sheet 3, and urine excreted from the human body is placed in the center of the bottom sheet 1. An absorbent body 2 capable of absorbing and holding is formed and mounted slightly narrower than the width of a fold line a of a top sheet 3, and the top sheet 3 is stacked on top of it.

The position of the absorbent body 2 is fixed by bonding the top sheet 3 and the bottom sheet 1 at both side edges of the absorbent body with an adhesive H1 such as hot melt, and further, the position of the absorbent body 2 is fixed by bonding the top sheet 3 and the bottom sheet 1 at both side edges of the absorbent body, and the sheets H2, H3 on both sides of the first fold line are The diaper main body 10 is formed by adhering both side portions H4 of the diaper.

An elastic band such as a polyurethane band is applied to the upper and lower sides of the diaper main body 10 in a stretched state with an adhesive such as hot melt, and then fixed to form a mounting belt 7 (see FIG. 2).

Note that it is known to form the fastening portion 12 on the mounting belt 7 using hot melt or the like.

In FIG. 2, a urethane sheet is used, but in this case, as shown in FIG. 3, a piece of elastic tape 9 is cut in a staggered manner in the longitudinal direction and divided into two parts and fixed to the upper and lower ends of the diaper body 10. It has a shape and structure that does not put pressure on the body when worn.

FIG. 4 shows an example in which an elastic belt is used instead of the urethane sheet, which is formed by applying hot melt to several stretched rubber threads 7a and then coating them on a support tape 7b made of polyethylene or the like.

FIG. 5 shows an example in which polyurethane bands 7' are fixed to both the front and back sides of the diaper main body, taking into consideration the feel on the wearer's skin, as an application of FIG. 2.

○Effects of the Invention The present invention eliminates wasted material by forming the diaper body using a rectangular top sheet and bottom sheet, and creates a three-dimensional structure by folding in two stages on both sides and adhering rubber thread. This simplifies the manufacturing process and makes it possible to provide this type of low-priced product at a lower price.

In addition, since the belts are attached to the upper and lower ends of the diaper body and rubber threads are attached to both sides, the natural state of the diaper body as a whole becomes a middle gate shape due to the elastic action of the elastic body, which improves the absorption of body fluids. , has the effect of increasing leakage prevention.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the working process of the main body diaper in manufacturing the simple three-dimensional diaper according to the present invention. FIG. 2 shows a simple three-dimensional diaper in which mounting belts are formed at the upper and lower ends of the diaper main body, and FIG. 2A is a plan view, and FIG. 2B is a sectional view taken along line S-8 in FIG. FIG. 3 is an explanatory diagram showing a method of forming a mounting band by dividing an elastic tape into two parts. Fig. 4 shows a second embodiment of the present invention, and Fig. a is a plan view;
Figure b is a partial vertical sectional view in the longitudinal direction when viewed from above. Fig. 5 shows a third embodiment of the present invention, and Fig. a is a plan view;
Figure b is a partial vertical sectional view in the longitudinal direction when viewed from above. 1... Bottom sheet 2... Absorber 3... Top sheet 6... Thread rubber 7... Installation belt 10...・・Diaper body a, b・・・・Folding line

Claims (1)

[Claims] In diapers that form the main part by sandwiching an absorbent material mainly made of matte pulp between a non-water permeable back sheet and a hydrophobic and water permeable top sheet, the top sheet is wider than the absorbent material. A wide sheet is used, and the left and right sides of the part covering the absorbent body are made with the first fold line that is a straight line inclined to the side edge of the sheet so that the surface of the sheet is inward and the fold width is small at the top end and wide at the bottom end. Fold inward and then point the folded part back from the second fold line toward the first fold to form a first folded piece and a second folded piece, and then fold the adjacent folds of both folded pieces. A rubber thread coated with adhesive is pasted in a stretched state parallel to the second fold line near the second fold line, and the back sheet is formed into a trapezoidal shape that is approximately the same as the outline of the top sheet. The absorbent body is fixed by joining the back sheet at least near both edges of the absorbent body with an adhesive, and the diaper body is formed by joining the back sheet on both sides of the first fold line and on both sides of the sheet. The simple three-dimensional diaper is made into a mounting belt by fixing an elastic belt longer than the width of the diaper body to the upper and lower ends of the diaper body in a stretched state.