JPH10314227A - Disposable diaper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disposable diaper of the type fastened at the abdomen, which can be manufactured easily at high speed, without reducing the manufacturing speed of the disposable diaper and without increasing the width of a diaper manufacturing device in attaching abdomen fastening belts to a diaper main body. SOLUTION: In this disposable diaper, which includes a diaper main body, in which a liquid-impermeable back sheet and a liquid-permeable top sheet are stacked with an absorber between them, and a pair of abdomen fastening belts joined to both sides of the back of the diaper main body, the abdomen fastening belts 5a, 5b are bonded to the diaper main body 1, on a bonding line 11 extending at an angle of approximately 45 deg. to the side L of the diaper main body from the longitudinal edge B of the back of the diaper main body 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disposable diaper having a structure in which a diaper main body is fixed around a wearer's waist by a belly-stopping belt, and more particularly to a disposable diaper which can be worn in a standing posture and at a high speed. The present invention relates to a disposable diaper that can be produced efficiently in a diaper.

[0002]

2. Description of the Related Art Various types of disposable diapers have been manufactured in which an absorbent body is loaded between a liquid-impermeable back sheet and a liquid-permeable top sheet, and these are molded so as to have an approximately hourglass shape in plan view. . 2. Description of the Related Art Disposable diapers are often used in such a manner that fastening tapes provided on both sides on the back side of the diaper are attached to a target tape provided on a backsheet side on the abdomen side to be worn.

However, such disposable diapers are difficult for a wearer to wear alone while standing (or for a caregiver to wear). Therefore, as shown in FIG.
A disposable diaper having a configuration in which a pair of belly stopper belts 105, 105 extending left and right from both sides on the back side (B side) of the diaper 101 has been devised (for example, Japanese Patent Laid-Open No. 1-9).
No. 7201, No. 2-20529, No. 4-75
No. 523). That is, the abdominal stop belt 105 is wound from the back side to the abdomen side to fasten the left and right belts, and then the diaper body part hanging on the back side is applied to the abdomen side under the crotch, and the fastening tape 106 is applied. The abdomen side is fixed by fastening means such as. Such disposable diapers are worn while the wearer is standing,
Or, since a caregiver can wear it while the wearer is standing, it has recently been particularly noted as a diaper that promotes self-reliance so as to prevent the elderly from becoming bedridden.

[0004] By the way, there are the following problems in producing this kind of anti-abdominal disposable diaper. Mainly, top sheet 102, absorber 103,
Diaper body 10 constituted by back sheet 104
No. 1 is produced while running a strip-shaped sheet in a state in which the diaper is continuous in the longitudinal direction in the arrow X direction in FIG.
This is because it is advantageous to attach the thread-like elastic member 107 for forming leg gathers in an elongated state in the longitudinal direction of the diaper main body 101. However, in order to adhere the stomach-reducing belt 105 to the diaper main body which is sent one after another, for example, the continuous sheet material for the stomach-reducing belt wound on a roll is moved in a direction orthogonal to the running direction of the line. From the start, which leads to an increase in the width of the manufacturing apparatus, and the running of the diaper main body must be stopped for adhesion, which causes a problem that manufacturing efficiency is reduced. In addition, the anti-belly belt needs to be at least twice as wide as the width of the diaper main body, and there is a problem that the width of the transport belt on the production line, that is, the width of the production apparatus must be increased. Since the overall dimensions are small for infant diapers, the width of the production line is not particularly regarded as a problem, but for adult diapers, the sum of the length of the abdominal restraint belt and the width of the diaper body is about 120 cm, The increase in the width of the manufacturing equipment poses a serious problem in practical operation.

[0005]

Accordingly, in the present invention, in attaching the anti-abdominal belt to the diaper main body, the speed of producing the disposable diaper can be reduced without decreasing the production speed and without increasing the width of the diaper production apparatus. An object of the present invention is to provide an anti-abdominal disposable diaper that can be easily manufactured.

[0006]

SUMMARY OF THE INVENTION The present invention provides a diaper main body which is laminated so that an absorber is sandwiched between a liquid-impervious back sheet and a liquid-permeable top sheet, and a back side of the diaper main body. A disposable diaper including a pair of anti-stop belts provided on both sides, wherein the anti-stop belt has an angle of approximately 45 ° from a back-side longitudinal edge of the diaper main body toward a side of the diaper main body. It has a gist where it is adhered to the diaper body on an adhesive line extending at an angle. Claim 1
In the first type of disposable diaper according to the above, since the anti-abdominal belt may be adhered to the diaper main body in the same direction as the running direction of the diaper main body, it is not necessary to increase the width of the manufacturing apparatus, and the line speed is also high. Can be

A structure in which a mechanical hook-and-loop fastener for fastening the belts is provided in the vicinity of one or both ends of the pair of belly-stopping belts. A structure formed of an elastic nonwoven fabric or a knitted material, a mechanical hook-and-loop fastener for fastening the abdomen side to the abdominal stopper belt on the abdomen side of the diaper body,
The configurations provided on the abdominal side top sheet are all preferred embodiments of the above-described disposable diaper of the present invention.

According to the present invention, there is provided a method according to claim 5,
A diaper body laminated such that an absorbent body is sandwiched between a liquid-impervious back sheet and a liquid-permeable top sheet, and a pair of belly stopper belts provided continuously on both sides on the back side of the diaper body. A disposable diaper comprising: an anti-abdominal belt, and side flap portions provided on both sides on the abdominal side of the diaper main body in order to fix the abdominal side of the diaper main body to the anti-abdominal belt. Both ends of a pair of band-shaped members having the same length as the diaper main body are on an adhesive line extending from the back side longitudinal edge of the diaper main body toward the side of the diaper main body at an angle of approximately 45 ° and the abdomen side of the diaper main body. Each of the band-shaped members is formed with a cut-off portion in the width direction of the diaper main body on an adhesive line extending at an angle of approximately 45 ° from the longitudinal edge toward the side of the diaper main body. Say that Includes disposable diapers with the following configuration.

The diaper of the second configuration is easy to handle because the anti-abdominal belt is integrated with the side flap on the abdomen side and is fixed to the diaper main body until the final packaging stage of the diaper manufacturing process. Higher-speed production becomes possible. There is also an advantage that the abdominal stop belt and the side flap on the abdomen side can be formed simultaneously.

It is preferable that a part or the whole of the belt-like member in which the anti-abdominal belt and the side flap on the abdomen side are integrated is made of an elastic nonwoven fabric or a knitted material. In a preferred embodiment, a mechanical hook-and-loop fastener is provided on the diaper main body contact surface of the band-shaped member on both sides of the separating portion of the band-shaped member.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the disposable diaper according to the present invention will be described with reference to FIGS. First, FIG. 1 shows a partially cutaway plan view of a disposable diaper having a first configuration of the present invention. The disposable diaper is provided with a diaper main body 1 and a pair of belly stopper belts 5a and 5b provided continuously on both sides on the back side (B side) of the diaper main body 1. The diaper body 1 includes a top sheet 2 made of a water-permeable nonwoven fabric or the like,
Absorber 3 formed of pulp fiber or superabsorbent resin powder in a substantially hourglass shape, back sheet 4 made of a water-impermeable plastic film or the like are laminated, and these are formed into a dot shape, a spiral shape, a net shape, a streak shape, or the like. It is configured by partially bonding with the applied hot melt adhesive. Cutouts K, K are provided on both sides at the center in the longitudinal direction of the diaper main body 1 so as to easily adhere around the legs, and thread-like elastic members 8, 8,... Are extended between the top sheet 2 and the back sheet 3. To form a leg gather. A pocket-shaped so-called three-dimensional gather that prevents leakage of urine from around the leg when the diaper is worn may be provided on the top sheet 2 along the longitudinal direction of the diaper main body 1. This three-dimensional gather is obtained by bonding a thread-like elastic member 10 in an extended state to the tip (close to the center in the width direction of the diaper main body 1) of a nonwoven fabric piece 9 subjected to a water-repellent treatment substantially equal to the length of the diaper main body 1. The diaper main body 1 is formed by adhering to the top sheet 2 only in the vicinity of the back side edge B and the abdomen side edge F.

On the back side (B side) of the diaper main body 1 of the present invention, a pair of right and left anti-belly belts 5a and 5b are continuously provided. The anti-belly belts 5a and 5b are bonded to the diaper main body 1 on an adhesive line 11 extending from the back side longitudinal edge B of the diaper main body 1 to the side L of the diaper main body 1 at an angle α of approximately 45 °. Have been. This angle α is approximately 45 °
(Approximately 40 to 50 degrees),
b when deployed to the left and right, the back side edge B of the diaper body 1
Α is set to approximately 45 ° because the edge of the anti-stomach belt does not become straight and becomes difficult to wear. This belly stopper belt 5
It is desirable that a and 5b are formed of a soft material such as a nonwoven fabric. The bonding line 11 may be a heat-sealing line, a welding line by ultrasonic waves, or an adhesive, and may be one or a plurality of continuous lines or a dotted line.

[0013] Mechanical hook-and-loop fasteners 6a and 6b are provided near the tips of the anti-belly belts 5a and 5b so that the belts can be fastened to each other. This mechanical hook-and-loop fastener may be merely attached to one of the anti-stop belts, and is preferably a hook member that can be hooked on the fibers of the nonwoven fabric constituting the anti-stop belt, since it is not necessary to separately attach a loop member. It is recommended to use hook members that do not hurt when touching the skin. Also, on the abdomen side (F side) of the diaper main body 1, mechanical hook-and-loop fasteners 7a, 7b (7a) for fastening the abdomen side to an abdominal stopper belt.
Although not shown, it is preferable to provide (provided at the lower right corner of the diaper main body 1) on the three-dimensional gather nonwoven fabric 9 (or the top sheet 2). With this configuration, the abdomen side of the diaper main body can be fastened to the abdominal stop belt after the left and right abdominal stop belts are fastened. Therefore,
The mechanical hook-and-loop fasteners 7a and 7b are also preferably hook members that can be hooked on non-woven fibers or knitted materials constituting the anti-abdominal belt. Considering that the abdomen side of the diaper can reach the back of the diaper when wearing because the waist of the wearer is thin, the back sheet on the back side of the diaper Cannot be a member)
A hook-and-loop fastener that can engage with the hook-and-loop fastener 7a and / or 7b can also be provided. Further, a conventionally known fastening tape is provided on both sides on the abdomen side of the diaper body, and a means for attaching the fastening tape to the back sheet 4 (or the target tape attached on the back sheet 4) on the back side of the diaper body is adopted. You may.

In order to join the anti-belly belts 5a and 5b to the diaper main body 1, as shown in FIG. 2 (a), a rectangular belt-shaped member 51 for the anti-belly belt is placed on the diaper main body 1 and the back side longitudinally. A band-shaped member 51 is adhered to the diaper main body 1 by forming an adhesive line 11 extending from the direction edge B toward the side L of the diaper main body at an angle of about 45 °. After the formation of the bonding line or simultaneously with the formation of the bonding line, K1 which is an unnecessary part and K2 which is a cutout part for leg circumference are cut off. By providing the bonding line 11 extending at an angle of about 45 °, the band-shaped member 5 is moved in the same direction as the longitudinal direction of the diaper main body 1 (the running direction during continuous manufacturing).
Since the diaper with the anti-abdominal belt can be manufactured simply by placing the diaper 1, the width of the manufacturing apparatus does not need to be widened, and high-speed manufacturing is possible.

The shape of the cut line when cutting the unnecessary portion K1 may be a straight line as shown in FIG. 2 or a curved line as shown in FIG. A hook-and-loop fastener 6a (preferably the above-described hook member) is provided near the end of the band-shaped member 51 on the side that comes into contact with the diaper main body 1. By providing a hook-and-loop fastener on the side that comes into contact with the diaper main body 1, hooks are engaged with the nonwoven fabric (the top sheet 2 or the nonwoven fabric 9 for three-dimensional gathers in FIG. 1) on the surface of the diaper main body 1, and the anti-abdominal belt is attached to the diaper main body The effect of temporarily fixing to 1 can be expected. Note that the hook-and-loop fasteners 6a and 6b only need to be able to fasten the left and right anti-belly belts, and therefore only one of them may be used. If the temporary fixing effect is unnecessary, a hook-and-loop fastener may be provided on the front side when the band-shaped member 51 is placed on the diaper main body 1.

FIG. 3 is an explanatory view showing a preferred embodiment in the case where the disposable diaper having the first configuration of the present invention is continuously manufactured. In a normal continuous diaper manufacturing method, the direction of each successive diaper is the same as the running direction. That is, the diaper is manufactured such that the back side edge of the upstream diaper and the abdominal side edge of the adjacent downstream diaper are in contact with each other. However, when manufacturing the disposable diaper of the first configuration, as shown in FIG. 3, the back side edges B of the diaper (1) and the diaper (2) come into contact with each other, and the diaper (2) In the diaper (3), the directions of the diapers may be reversed one by one so that the abdominal edges F are in contact with each other. With this configuration, the belt-shaped member 51 for the anti-belly belt
Since the band-shaped member 52 connected by two diapers can be placed on the diaper main body, the number of times of positioning the band-shaped member is halved, and the cutting operation of the cutout portion K1 is halved, thereby improving the manufacturing speed. Can be. Especially resection K
When the cut line of 1 is curved, the cut portion K1 for two diapers can be easily formed as a substantially semicircular cut portion K3 in diapers (3) and (4) in FIG. Can be resected.

It is preferable to form a part or all of the stomach stopper belt with a stretchable nonwoven fabric, since the adhesion to the wearer is further improved. When a part is made of an elastic nonwoven fabric, as shown on the right side of the diaper (4) in FIG.
Belt stopper belt-shaped member 55 in which two stretchable non-woven fabric portions 53 and 53 and a non-stretchable non-woven fabric portion 54 are joined in advance.
It is better to use Resection K1 (or K3) and K2
Are cut off at the back side edge B and the abdomen side edge F into individual diapers, and if necessary, folded and packaged.

Next, a description will be given of a disposable diaper according to the second configuration of the present invention. As shown in FIG. 4 (a), the second diaper comprises a diaper body 1 and approximately 45 from the back side edge B to the side L of the diaper body 1 in the same manner as the first diaper. The anti-abdominal belt portions 5a and 5b connected to the back side of the diaper main body 1 by the bonding lines 11 and 11 extending at an angle of .degree. The abdominal side flap portions 5c and 5d connected to the diaper main body by the bonding lines 12 and 12 extending at an angle of about 45 ° toward the side L are connected at a separating portion 14 formed in the width direction of the diaper. And two belt-shaped members 13a and 13b. In order to secure a sufficient length of the anti-belly belts 5a and 5b, it is preferable that the separating portion 14 is provided so as to be biased toward the abdomen side F from the longitudinal center of the diaper main body 1. The separating portion 14 is provided with a perforation, and is
Are cut off, and the two are temporarily fixed with a peelable tape or the like, or the like, and can be separated.

FIG. 4B is a plan view in which the strip members 13a and 13b are separated from each other at the separating section 14 and developed to the left and right. That is, the stomach stopper belts 5a, 5
b is formed on both sides on the back side of the diaper main body 1, and side flaps 5c and 5d shorter than the belly stopper belts 5a and 5b are provided continuously on both sides on the abdomen side.

On both sides of the separating portion 14 of the band-shaped member 13a, mechanical surface fasteners 6a and 7c are provided on the contact surface of the band-shaped member 13a with the diaper body 1. Similarly, on both sides of the separation portion 14 of the band-shaped member 13b, the band-shaped member 13b
Mechanical fasteners 6b and 7d on the contact surface of the diaper body 1
Is provided. As shown in FIG.
After being cut off at step 4, the anti-abdominal belts 5a and 5b are fastened to each other with the hook-and-loop fasteners 6a and / or 6b, and the abdominal side of the diaper is attached to the anti-belt belt with the hook-and-loop fasteners 7c and 7d of the abdominal side flaps. I do. At this time, 6a, 6b, 7
When the hook members c and 7d are the above-mentioned hook members, it is only necessary to use the nonwoven fabric material or the knitted material as the anti-belly belt without newly providing a loop member.

As shown in FIG. 5, for example, a hook member may be used for 6b, a large-area loop member may be provided for 6a, and if the side flap is relatively long, 7c may be attached to the back of the diaper. , 7d, a loop fastener 15 (the hook and the loop may be reversed) may be provided near the back side edge B.

In order to manufacture the diaper having the second configuration shown in FIG. 4A, there is no advantage in reversing the diaper direction as shown in FIG. Then, after laminating continuous sheets for the belt-shaped members 13a and 13b to form the bonding lines 11 and 12, a cutout having a predetermined shape may be cut out and manufactured as in the case of FIG.

In the diaper according to the second configuration of the present invention,
By providing the bonding lines 11 and 12, a diaper with an anti-abdominal belt can be manufactured simply by placing members for the band-shaped members 13a and 13b in the same direction as the longitudinal direction of the diaper main body 1 (running direction during continuous manufacturing). Therefore, it is not necessary to increase the width of the manufacturing apparatus, and high-speed manufacturing is possible. Furthermore, in the diaper of the second configuration, the anti-abdominal belt is integrated with the side flaps on the abdomen side and is fixed to the diaper main body at both ends in the longitudinal direction, so that handling during manufacture is easy. That is, in the diaper of the first configuration, a hook-and-loop fastener is provided on the side that comes into contact with the diaper main body 1,
If the abdominal stop belt is not temporarily fixed to the diaper main body 1, the abdominal stop belt piece may flutter and cause trouble during continuous manufacturing. However, in the diaper having the second configuration, the band-shaped members 13a, 13a, 1
3b has both ends fixed to the diaper body,
Producing at high speed does not cause any problems. There is also an advantage that the abdominal stop belt and the side flap on the abdomen side can be formed simultaneously.

Also in this second diaper, if a part or the whole of the belt-shaped member in which the anti-abdominal belt and the side flap on the abdomen side are integrated is formed of a stretchable nonwoven fabric or a knitted material, the wearer can wear it. Adhesion is improved.

[0025]

The disposable diapers of the first and second configurations according to the present invention are provided with anti-abdominal belts extending right and left from the diaper main body, and can be manufactured while standing. In this case, since the anti-belly member can be manufactured by being superimposed on the diaper main body, it can be manufactured at high speed and at low cost without increasing the width of the manufacturing apparatus.

In the disposable diaper of the first configuration, FIG.
If the manufacturing method as shown in (1) is adopted, the number of times of positioning the belt-shaped member for abdominal stopper belt is reduced by half, and the cutting operation of the cut-off portion is also reduced by half, so that the manufacturing speed can be improved.

In the disposable diaper of the second configuration, the anti-abdominal belt is integrated with the side flaps on the abdomen side and is fixed to the diaper main body at both ends in the longitudinal direction.

The disposable diaper of the present invention is particularly useful for adults because it can be worn while standing, but because of its simple manufacturing method, it is suitable for infants or children who need to wear diapers larger than infants. Various size developments are possible.

[Brief description of the drawings]

FIG. 1 is a partially cutaway plan view illustrating a disposable diaper having a first configuration of the present invention.

FIG. 2 is an explanatory view showing an example of a method of manufacturing the disposable diaper of FIG.

FIG. 3 is an explanatory view showing an example of a continuous manufacturing method of the disposable diaper of FIG. 1;

FIG. 4 is a plan view illustrating a disposable diaper having a second configuration of the present invention.

FIG. 5 is a plan view illustrating a disposable diaper according to a second configuration of the present invention.

FIG. 6 is a partially cutaway plan view showing a conventional diaper with a belly-stopping belt.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Diaper main body 2 Top sheet 3 Absorbent 4 Back sheet 5a, 5b Belt stopper belt 6a, 6b Mechanical hook-and-loop fastener 8 Elastic member for legs 9 Non-woven fabric piece for three-dimensional gather 10 Elastic member for three-dimensional gather 11, 12 Adhesive lines 13a, 13b Belt members 51, 52, 55 Belt members 53 Stretchable non-woven fabric 54 Non-stretchable non-woven fabric 101 Diaper main body 102 Top sheet 103 Absorbent material 104 Back sheet 105 Barrier belt 106 Fastening tape B Diaper main body longitudinal direction back side edge F Diaper main body length Direction abdomen side edge K, K1, K2, K3 Cutout L Diaper body side piece

Claims (9)

[Claims] 1. A diaper main body laminated so that an absorber is sandwiched between a liquid-impermeable back sheet and a liquid-permeable top sheet, and a diaper main body is provided continuously on both sides on the back side of the diaper main body. A disposable diaper having a pair of anti-abdominal belts, wherein the anti-abdominal belt extends on a bonding line extending at an angle of approximately 45 ° from the back-side longitudinal edge of the diaper main body toward the side of the diaper main body. A disposable diaper, characterized in that the disposable diaper is adhered to a diaper body. 2. The disposable diaper according to claim 1, wherein a mechanical hook-and-loop fastener for fastening the belts is provided near one or both ends of the pair of anti-belly belts. 3. The disposable diaper according to claim 1, wherein a part or all of the anti-abdominal belt is formed of a stretchable nonwoven fabric. 4. The disposable diaper according to claim 1, wherein a part or all of the anti-abdominal belt is formed of a knitted material. 5. The diaper main body according to claim 1, further comprising a mechanical hook-and-loop fastener on the abdominal side of the diaper main body for fastening the abdominal side to an abdominal restraint belt. Disposable diapers described in any of them. 6. A diaper main body which is laminated so that an absorber is sandwiched between a liquid-impervious back sheet and a liquid-permeable top sheet, and a pair of diaper main bodies connected to both sides on the back side of the diaper main body. A disposable diaper provided with a stomach-stopping belt, wherein the stomach-stopping belt and side flaps connected to both sides of the abdomen of the diaper main body for fastening the abdomen side of the diaper main body to the stomach-stopping belt. Both ends of a pair of band-shaped members having the same length as the diaper main body with which the diaper main body is integrated are approximately 4 from the back side longitudinal edge of the diaper main body toward the side of the diaper main body.
The belt is bonded to the diaper main body on an adhesive line extending at an angle of 5 ° and on an adhesive line extending at an angle of approximately 45 ° from the abdomen-side longitudinal edge of the diaper main body toward the side of the diaper main body; A disposable diaper, wherein the member has a cut-off portion formed in a width direction of the diaper main body. 7. The disposable diaper according to claim 6, wherein a part or all of the belt-shaped member is formed of a stretchable nonwoven fabric. 8. The disposable diaper according to claim 6, wherein a part or all of the belt-shaped member is formed of a knitted material. 9. On both sides of the separating portion of the band-shaped member,
9. The disposable diaper according to claim 7, wherein a mechanical hook-and-loop fastener is provided on the diaper main body contact surface of the band-shaped member.