JPH03231660A - Paper diaper and preparation thereof - Google Patents

Abstract

PURPOSE:To provide a paper diaper generating no steaming, having moisture absorbing properties and hard to generate a rash by mounting an absorbing body and an elastic body to a rear sheet having hydrophilicity and air permeability and laminating a waterproof back sheet, a water absorbable core and a hydrophilic top sheet to the absorbing body. CONSTITUTION:An absorbing body 5 is mounted to a rear sheet and a waterproof back sheet 7, a water absorbable core and a hydrophilic top sheet 8 are successively laminated to the absorbing body from below. Since water- repellent sheets 6 having crotch part elastomers 13 built therein are mounted to the sheet 1 on both sides thereof, the body fluid absorbed by the core through the top sheet 8 is stopped on the under, front and rear sides of the sheet 1 by the back sheet 7 and stopped on both sides by the water-repellent sheets 6. The crotch parts of the water-repellennt sheets 6 on both sides are made higher than the top sheet 8 to form three-dimensional weirs 14 and, since weirs are also formed to the front body end part and rear body end part of the rear sheet 1 to keep away the rear sheet from the skin of a wearer and the rear sheet has hydrophilicity and air permeability, the parts coming into contact with the skin become hard to generate steaming.

Description

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

[Prior Art] Conventional disposable diapers are composed of a central absorbent part and a water-repellent flap part extending outward from the central absorbent part. It is prevented.

[Problems to be Solved by the Invention] However, in the above-mentioned conventional disposable diaper, there is a problem in that when sweat occurs on the flap part, it has a water-repellent effect, which causes rashes and stuffiness. There was a point.

The present invention aims to solve the above problems. That is, the present invention is similar to 5 normal pants,
The object of the present invention is to provide a paper diaper that is hygroscopic without stuffiness, does not cause a rash, and does not cause discomfort, and a method for manufacturing the same.

[Means for Solving the Problems] In order to achieve the above object, the disposable diaper of the present invention includes a back sheet having tree-friendly properties and breathability, and an absorbent body attached to the back sheet, and At least a front body end elastic body and a back body end elastic body are attached to the backsheet as elastic bodies, and a waterproof backsheet and a waterproof backsheet are attached to the absorbent body in order from bottom to top. A water-absorbent core and a hydrophilic top sheet are laminated, and water-repellent sheets with built-in groin elastic bodies are attached to both sides, and the crotch area of the water-repellent sheet is above the top sheet. It is assumed that a three-dimensional weir is formed.

In addition, the method for manufacturing a disposable diaper of the present invention is based on a long back sheet having tree-friendly properties and air permeability, to which at least a front body end elastic body and a back body end elastic body are attached in a stretched state as elastic bodies. The material is fed in the longitudinal direction, and a waterproof back sheet, a water-absorbent core, and a hydrophilic top sheet are laminated in order from the bottom, and the crotch elastic body is built in in a stretched state so that the crotch area is covered. A step of attaching an absorbent body having water-repellent sheets on both sides above the top sheet to the long base material at predetermined intervals, and folding the absorbent body around the center line in the width direction of the long base material to form the front body A process of making the front body and back body become heavier, a process of joining the boundary line of one diaper body and the adjacent diaper body corresponding to both ends of the front body and back body, and a process of joining around the legs. It consisted of a step of cutting, and a step of cutting along the boundary line to make individual disposable diapers.

[Function] According to the disposable diaper of the present invention, an absorbent body is attached to the back sheet, and on this absorbent body, a waterproof back sheet, an absorbent core, and a hydrophilic top sheet are laminated in order from the bottom. In addition, water-repellent sheets with built-in groin elastics are attached to both sides, so body fluids absorbed into the core through the top sheet are stopped by the back sheet on the bottom, and water-repellent sheets on both sides. This prevents leakage from seeping into the back sheet.
In addition, the crotch area of the water-repellent sheets on both sides is higher than the top sheet, forming a three-dimensional dam, which keeps the absorbent material away from the wearer's skin and prevents stuffiness, while the back sheet is hydrophilic. Since it has breathability, other parts that come into contact with the skin will also not get stuffy.

Further, according to the method for manufacturing a paper diaper of the present invention, the paper diaper of the present invention can be easily manufactured into a pants type.

[Example] FIG. 1 is a perspective view showing an embodiment of the present invention.

In FIG. 1, reference numeral 1 denotes a back sheet that is wood-friendly and breathable, and has a front body end elastic body 2, a back body end elastic body 3, and a leg elastic body 4. Reference numeral 5 denotes an absorbent body to be described later, which has water-repellent sheets 6 on both sides.

FIG. 2 is an enlarged cross section taken along section line A-A in FIG.
FIG. 3 is an enlarged sectional view taken along section line B-B.

That is, as shown in FIGS. 2 and 3, the absorbent body 5
has a waterproof backsheet 7 made of polysheet with a lower crepe paper 92 at the bottom and an upper crepe paper 9 at the top. The top sheet 8 has a hydrophilic top sheet 8 with a water-absorbing core between which a water-absorbing core is provided. In this embodiment, the core includes upper and lower crepe papers 9, . 92.
- Secondary paper cotton 10, absorbent polymer 11, secondary paper cotton 1
2 are laminated, and the water-repellent sheets 6 on both sides have a built-in groin elastic body 13, and the crotch portion of the water-repellent sheet 6 is located above the top sheet 8, forming a three-dimensional dam. 14 is formed.

FIG. 4 is a partially enlarged sectional view taken along section line CC in FIG. 1.

As shown in FIG. 4, an elastic body 3 is provided around the waist and at the end of the back body. The end of the back body is bent inward to form a three-dimensional dam 15.

Also, the front part and end of the back sheet 1 are
It is similar to the waist area and end portion of the back body, that is, the elastic body 2 is installed inside, and the weir 1
A weir similar to 5 is formed.

FIG. 5 shows the paper diaper shown in FIG. 1 in an expanded state.

In order to configure the disposable diaper shown in FIG. 1 into a tape-type disposable diaper that is known as an hourglass shape,
All you have to do is attach the necessary fastening tape, release paper, etc. to the designated locations.In order to construct a pants-type disposable diaper, which is said to be an integrated type, the front body and back body are made to be heavy, and a well-known method is used. It is sufficient to join the vicinity of both ends using the method.

In the paper diaper constructed as shown in FIG. 1, an absorbent body 5 is attached to the back sheet 1, and this absorbent body 5 includes
From bottom to top: waterproof backsheet 7, water-absorbent core (upper and lower crepe paper 9, .92 - secondary paper cotton 10, water-absorbent polymer 11, secondary paper cotton 12), and hydrophilic top sheet 8. are laminated together, and the groin elastic body 13
Water-repellent sheets 6 with built-in water-repellent sheets 6 are attached to both sides, so body fluids absorbed into the core through the top sheet 8 are stopped by the back sheet 7 on the lower side and in the front and back, and the water-repellent sheets 6 on both sides. Therefore, seepage and leakage can be avoided on the back sheet 1, and the crotch portions of the water-repellent sheets 6 on both sides are higher than the top sheet 8 to form a three-dimensional dam 14, and the back sheet Similar weirs 15 are also installed at the front and back ends of 1.
Since it is formed and kept away from the wearer's skin, it does not get stuffy easily, and since the back sheet 1 has hydrophilicity and air permeability, other parts in contact with the skin also don't get stuffy.

FIG. 6 is a plan view showing an embodiment of the method for manufacturing a disposable diaper of the present invention, and this embodiment is an example of manufacturing a pants-type disposable diaper.

First, the elongated base sheet 1 of the hydrophilic and breathable back sheet 1 to which the front body end elastic body 2, the back body end elastic body 3, and the leg elastic body 4 are attached is stretched. and feed it in the longitudinal direction shown by arrow 17.

Then, the absorbent body 5 shown in FIGS. 1 to 5 is stretched and attached to the elongated base material 16 at a predetermined distance.

Next, a step E is performed in which the elongated base material 16 is folded back about the center line 18 in the width direction so that the front body portion 19 and the back body portion 20 are in a state of being heavy.

After this, the boundary line 2 between one diaper body a and the adjacent diaper body a corresponding to both side ends of the front body 19 and the back body 20
The process of joining part 1 and cutting around the legs (cutting line 2)
Step 2) and Step F of cutting at the border line 21 to make individual paper diapers are performed.

In this way, a pants-type disposable diaper can be easily manufactured.

In the disposable diaper shown in FIG. 1, if the absorbent body 5 is configured to be removable from the back sheet 1, after use, only the absorbent body 5 can be replaced with a new absorbent body and the back sheet 1 can be attached to the diaper.
can be reused.

[Effects of the Invention] As explained above, according to the disposable diaper of the present invention, an absorbent body is attached to the back sheet, and this absorbent body includes, in order from the bottom, a waterproof back sheet, a water absorbent core, and a hydrophilic core. The top sheet is laminated with a water-repellent sheet on both sides, so body fluids absorbed into the core through the top sheet are stopped by the back sheet on the bottom, and water-repellent sheets on both sides. This prevents the back sheet from seeping and eroding, and the crotch areas of the water-repellent sheets on both sides are higher than the top sheet, forming a three-dimensional dam, so that the absorbent material can be absorbed by the wearer. At the same time, since the back sheet is wood-friendly and breathable, other parts that come into contact with the skin are also less likely to get stuffy. Therefore, like regular pants, they are moisture-absorbent without getting stuffy, and do not cause rashes, and because the absorbent material, which can easily cause discomfort, is kept away from the skin, it is less likely to cause the discomfort of disposable diapers, and can be expected to have the same feeling of wearing as pants. be.

Further, according to the method for manufacturing a paper diaper of the present invention, there is an effect that the above-mentioned paper diaper of the present invention can be easily manufactured into a pants-type diaper.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of the disposable diaper of the present invention;
Figure 2 is an enlarged sectional view taken along section line A-A in Figure 1;
The figure is also an enlarged sectional view taken along section line B-B, 'fS4 is a partially enlarged sectional view taken along section line C-C, FIG. FIG. 2 is a reduced plan view schematically showing an example of a method for manufacturing a disposable diaper. DESCRIPTION OF SYMBOLS 1...Back sheet, 2...Front body end elastic body, 3...Back body edge elastic body, 4...Leg area elastic body, 5...Absorbent body, 6...Repellent Water-based sheet, 7.
...Back sheet, 8...Top sheet, 90.
9□...Crepe paper for upper and lower parts, 10...-paper cotton, 11...Water-absorbing polymer 12...secondary paper cotton, 13...crotch elastic body, 1
4.15... Weir, 16... Long base material, 17.
...Arrow, 18...Center line, 19...Front body, 20...Back body, 21...Border line,
22... Cutting line around the legs, a... Diaper body. 4 others Figure 2 Figure 3 Figure 4 Figure 6

Claims (1)

[Scope of Claims] 1. A back sheet having hydrophilicity and air permeability, and an absorbent body attached to the back sheet, and the back sheet includes at least a front body end elastic body and a rear body end elastic body as elastic bodies. A body end elastic body is attached to the absorbent body, and a waterproof back sheet, a water absorbent core, and a hydrophilic top sheet are laminated in order from bottom to top on the absorbent body. A paper diaper, characterized in that a water-repellent sheet containing a crotch elastic body is attached to both sides, and the crotch part of the water-repellent sheet is above the top sheet to form a three-dimensional dam. . 2. A long base material of a hydrophilic and breathable back sheet to which at least a front body end elastic body and a back body end elastic body are attached in a stretched state as elastic bodies is fed in the longitudinal direction, and A waterproof backsheet, a water-absorbent core, and a hydrophilic topsheet are laminated in this order, and the elastic body in the crotch area is built in in a stretched state so that the crotch area is above the topsheet. A step of attaching an absorbent body having a water-based sheet to the long base material at a predetermined interval, and a state in which the front body and the back body become heavy by folding the long base material around the center line in the width direction of the long base material. a process of joining one diaper body and an adjacent diaper body at the boundary line corresponding to both ends of the front body and the back body, a process of cutting around the legs, and a process at the boundary line. A method for manufacturing a disposable diaper, comprising the step of cutting the diaper into individual disposable diapers.