JP3437769B2 - Disposable wearing articles - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a disposable wearing article which can be used as a disposable diaper, a diaper cover, training pants, sanitary shorts and the like.

[0002]

2. Description of the Related Art A pants-type disposable wearing article disclosed in Japanese Patent Laid-Open No. 4-28365 has elastic bands extending in the longitudinal direction on both sides of a vertically long wearing article body. The band is in the stretched state with both ends joined to the body. The intermediate part between the both ends is a part which becomes the waist elastic band of the worn article, and is not joined to the main body,
The wearer of the article inserts the leg between the band and the body.

[0003]

The above-mentioned known diapers are
Since it has a simple structure, the manufacturing cost is low and it can be supplied to the market as an inexpensive product. On the other hand, since this diaper is of pants type, it cannot meet wide demand unless various sizes are prepared. For that reason, the increase in the variety of products causes the cost to increase.

Therefore, the present invention provides a wearing article having a simple structure which can widely accommodate the size of the wearer's body.

[0005]

[Means for Solving the Problems] In order to solve the above problems,
The present invention is premised on a vertically-long wearing article body having a surface that comes into contact with the skin of the wearer and a back surface that is the back side thereof and extends in the abdominal direction and the buttocks direction around the crotch of the wearer. And a pair of strips whose both ends are joined to the back side of the main body and extend parallel to the vertical direction of the main body, and the strips are elastically expandable and contractible in the vertical direction. Is.

On this premise, the present invention is characterized in that the main body has a pair of side edges extending in the vertical direction, a pair of end edges intersecting the side edges and extending in the horizontal direction, and the vertical direction. A virtual first centerline that bisects the length in the direction and a virtual second centerline that bisects the lateral length, and the article is symmetrical with respect to the second centerline. Each of the strips being made and having both ends joined to the back surface each have an outer edge located towards the side edge of the body,
The inner edge located closer to the second center line and the inner edge extending between the ends of the inner and outer edges are inclined so as to approach the first center line when proceeding from the inner edge to the outer edge. A pair of end joining lines being formed, and one of the end joining lines (first joining line) and a strip portion extending in the longitudinal direction of the body beyond the first joining line of the body. The other end joining line (second joining line) and the strip portion extending in the longitudinal direction of the body beyond the second joining line are detachably joined to the back surface and are not detachable to the back surface of the body. It is connected to.

In one of the preferred embodiments of the present invention, the strip also has a portion near the second joining line which comes into contact with the back surface of the main body when bent along the second joining line. , Removably joined to the back surface of the main body.

[0008] In another one of the embodiments, the strip has a hook member of a mechanical fastener, and the back surface of the main body has a loop member, and the strip is formed by engaging and disengaging the hook member and the loop member. Detachably joins to the back surface of the body.

In another one of the embodiments, the back surface of the main body is formed of a liquid impermeable sheet, and the front surface of the main body is formed so that a body fluid absorbent pad member can be attached thereto.

In another one of the embodiments, the main body has a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent core interposed between the both sheets.

In another one of the embodiments, an elastic member extending in the longitudinal direction is attached in a stretched state near the side edge of the main body.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION The details of the disposable wearing article according to the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a partially cutaway perspective view of a disposable diaper 1 as an example of a disposable wearing article in a worn state. The diaper 1 has a main body 2 that is curved in a U shape so that it can be applied to the abdomen and buttocks centering on the crotch of the wearer, and a strip 3 that extends in the waist circumference direction of the wearer. . The strip 3 extends laterally while curving laterally from both sides of the rear end portion 7 of the main body 2 located at the rear of the drawing, and the tip end portion 36 abuts on the front end portion 6 of the main body 2. However, the front end portion 36 of the one side 3 </ b> A of the strip 3 is illustrated in a state where it does not contact the front end portion 6 of the main body. A target zone 11 is formed on the back surface of the front end portion 6 of the main body by sticking a loop member 10A of a mechanical fastener known by a trade name such as a velcro tape, and the strip 3 is mechanically attached to a tip end portion 36 thereof. The first fastening portion 12 formed by attaching the hook member 10B of the fastener is detachably joined to the target zone 11. Due to the joint between the body 2 and the strip 3, the diaper 1
A waistline opening 13 and a pair of leg openings 14 are formed in the body.

The main body 2 has a liquid-permeable top sheet 16, a liquid-impermeable back sheet 17, and an absorbent core 18 interposed between these sheets 16 and 17. In the vicinity of the side edge 33 of the main body 2 forming the leg opening 14, the elastic member 19 extending in the extended state in the front and rear end portions 6 and 7 contracts,
A large number of gathers 21 are formed on the front and back sheets 16 and 17.

The strip 3 is composed of two overlapping sheets 22,
A plurality of elastic members 24 are joined to at least one inner surface of 23 in an extended state, and the members 24 contract to form a number of gathers 26. The tip portion 36 of the strip 3 is folded inward at a folding curve 41 that obliquely crosses the width of the strip 3, and the hook member 10B forming the first fastening portion 12 is attached to the surface contacting the target zone 11. It is worn. The second hook member 10C is provided on the strip 3 so as to be adjacent to the first fastening portion 12 bent at the folding line 41.
The second fastening portion 32 is formed by sticking. The strip 3 is joined to the target zone 11 by the first fastening part 12 and / or the second fastening part 32.

FIG. 2 is a partially cutaway plan view of the back surface side when the diaper 1 of FIG. 1 is flattened. The strips 3 are arranged symmetrically with respect to a center line AA that divides the width of the main body 2 into two equal parts and extends in the longitudinal direction.
One side 3B is extended in the longitudinal direction of the main body 2 and joined to the target zone 11, and the other side 3A of the strip 3
Are bent at right angles and extend to the side of the body 2.

The main body 2 is of a substantially vertically long rectangular shape, and has a pair of side edges 33 extending in the vertical direction and a pair of end edges 34 extending in the horizontal direction, and the edge 34 is a virtual center line A. -A is bisected and the side edge 33 is bisected by the virtual center line BB.

The strip 3 has a distal end portion 36 which is detachably joined to the target zone 11 and a base end portion 37 which is the opposite end portion thereof. The base end portion 37, which is indicated by a number of small dots in the figure, is joined to the rear end portion 7 of the main body 2 by adhesion or welding so as not to separate. The strip 3 is
Between the tip end portion 36 and the base end portion 37, there is a portion 30 which is separated from the main body 2 and elastically expands and contracts in the longitudinal direction of the main body 2. This portion 30 has an inner edge 3 parallel to the center line AA of the body 2.
8 and the outer edge 39, and the straight front and rear end edges 41 and 42 connecting the ends of the inner and outer edges 38 and 39.
Each of the front and rear end edges 41, 42 is inclined so as to gradually approach a center line B-B that divides the length of the main body 1 into two when going from the inner edge 38 to the outer edge 39. The inclined front end edge 41 is a hypotenuse of the hook member 10B having a right-angled triangle shape in the drawing, and is also a folding curve of the strip 3 in FIG. The inclined rear end edge 42 is the outline of the base end portion 37 of the strip 3. The second fastening portion 32 is located on the outer surface of the strip 3 near the front edge 41.

In the diaper 1 having such a structure, for example, the strip 3B located on the left side in FIG. 2 is bent at the front end edge 41 and the rear end edge 42 so as to turn the strip 3B upside down to form an imaginary line. 1 and the back sheet 17 is placed outside and the main body 2 is curved in the longitudinal direction, the pants-type diaper 1 of FIG.
Becomes

The strip 3 is also bent along the trailing edge 42 with the tip 36 removed from the target zone 11 like the strip 3A on the right side shown in FIG. It can be extended outward from 33. The strip 3B can also be bent and extended in the same manner as the strip 3A. The diaper 1 in which the strips 3A and 3B are thus extended becomes an open type diaper 1. When the tip ends 36 of the strips 3A and 3B are extended along the circumference of the wearer's waist and then pressed against the target zone 11, the second fastening portion 32 and the zone 11 are joined.
The strip 3 extending along the circumference of the body can be joined to the target zone 11 by bending the first fastening portion 12 along the front end edge 41 in advance. At this time, as shown by the strip 3A in FIG.
2 and the second fastening portion 32 can be joined to the target zone 11.

FIG. 3 is a drawing similar to FIG. 2 showing an example of the embodiment of the present invention. In this diaper 1, a relatively small loop member 51 is attached to the back surface of the rear end portion 7 of the main body 2, and a relatively small hook member 52 is attached near the rear end edge 42 of the strip 3. When the strip 3 is bent along the folding curve 53 so as to extend slightly obliquely upward as shown by an imaginary line, the loop member 51 and the hook member 52 are joined to each other, and the inclination angle of the strip 3 obliquely extending is increased. Can be kept constant. The positions of the loop member 51 and the hook member 52 can be selected so that the inclination angle of the strip 3 has a preferable value. Further, when the two members 51, 52 are joined together, the strip 3 is less likely to be twisted as compared with the case where the both members 51, 52 are not present.

The diaper 1 according to the present invention has a vertically long body 2
Since the elastic strip 3 is simply attached to the back surface of the diaper, the manufacturing cost of the diaper 1 can be kept low. Further, this diaper 1 can be used as an open type, and the length of the strip 3 extending in the waist circumference direction not only elastically expands and contracts to fit around the wearer's waist but also the target zone. By selecting the position at 11, the substantial length of the strip 3 can be adjusted. Therefore, this diaper 1 can be widely used for various waist circumferences, and it is not necessary to prepare many types of waist circumferences. Such characteristics of the diaper 1 also contribute to keeping manufacturing costs low.

In the present invention, the surface sheet 16 may be a liquid-permeable nonwoven fabric or a perforated plastic film. A plastic film can be used for the back sheet 17. For the core 18, crushed pulp or a mixture of crushed pulp and super absorbent polymer particles can be used. The core 18 is made substantially equal to the length and width of the main body 2 as shown in the drawing, and when the strip 3 extends in the waist circumference direction as shown in FIG. 1, the front and rear end portions of the core 18 are stripped. It seems that it is located under the strip 3, and the strip 1 makes the core 1
8 can be suppressed, so that the core 18 adheres well to the wearer's skin. A non-woven fabric or a plastic film can be used for the strip 3. An adhesive such as a hot melt adhesive can be used to join the respective members of the diaper 1. If the member is heat-meltable, a welding technique can be used. As a means for detachably joining the strip 3 to the main body 2, an adhesive may be used instead of the mechanical fastener shown in the drawing. Strip 3
Applies an adhesive to the first fastening portion 12 and the second fastening portion 32, and the required area of the main body 2 is the first, second fastening portion 12, 3
2 so that it can be detachably attached.

The disposable wearing article according to the present invention described by taking the disposable diaper 1 as an example can be used as training pants, pants for incontinence, diaper covers, sanitary shorts and the like. In these applications, when the core 18 is not needed, it can be omitted to make a worn article. In such a wearing article, it is preferable that a body fluid absorbent pad be made so that it can be attached to and detached from the main body surface, and a liquid-impermeable or breathable liquid-impermeable sheet is used as the back sheet.

[0025]

The disposable diaper according to the present invention has a relatively simple structure and is widely applicable to various waist circumference sizes, so that the manufacturing cost of the diaper can be kept low.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view of a disposable diaper in a worn state.

FIG. 2 is a partially cutaway plan view of a disposable diaper.

FIG. 3 is a drawing similar to FIG. 2 showing an example of an embodiment.

[Explanation of symbols]

1 diaper 2 body 3,3A, 3B strip 16 Surface sheet 17 Back sheet 18 core 33 Side edge 34 Edge 38 Side edge 39 Side edge 41 First joining line (front edge) 42 Second joining line (rear edge) 51 mechanical fasteners 52 mechanical fasteners A-A second center line BB first center line

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-64-45802 (JP, A) JP-A-10-314228 (JP, A) Actual opening Flat 2-6032 (JP, U) Actual opening Sho-63- 26319 (JP, U) Actual development Sho 62-186903 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) A61F 13/15-13/84 A61F 5/44

Claims (6)

(57) [Claims] 1. A vertically long wearing article main body having a front surface that comes into contact with the skin of the wearer and a back surface that is the back side thereof and extending in the abdominal direction and the buttocks direction around the crotch of the wearer, and the main body. Of a pair of strips, both ends of which are joined to the back surface of the main body and extending parallel to the longitudinal direction of the main body, wherein the strips are elastically expandable and contractible in the longitudinal direction. A main body, a pair of side edges extending in the vertical direction, a pair of end edges that intersect the side edges and extend in the horizontal direction, and a virtual first center line that bisects the length in the vertical direction, A band having an imaginary second center line that bisects the lateral length, the article is made symmetrical with respect to the second center line, and both ends thereof are joined to the back surface. Each of the pieces includes an outer edge located near a side edge of the main body and the second edge.
A pair of inner edges that are located closer to the center line and a pair that extends between the ends of the inner and outer edges and that is inclined so as to approach the first center line when proceeding from the inner edge to the outer edge. And a strip portion extending in the longitudinal direction of the body beyond the first joining line and the end joining line (1st joining line) on one side of the body. And the other end joining line (second joining line) and the strip portion extending in the longitudinal direction of the main body beyond the second joining line are non-detachably joined to the back surface of the main body. The wearing article as described above. 2. The strip is also detachably joined to the back surface of the main body also at a portion in the vicinity of the second joining line that comes into contact with the back surface of the main body when bent along the second bonding line. The wearing article according to claim 1. 3. The strip has a hook member of a mechanical fastener, and the back surface of the main body has a loop member, and the strip is attached to the back surface of the main body by engaging and disengaging the hook member and the loop member. The wearing article according to claim 1 or 2, which is detachably joined. 4. The wear according to claim 1, wherein the back surface of the main body is formed of a liquid impermeable sheet, and the front surface of the main body is formed so that a pad member absorbing body fluid can be attached thereto. Goods. 5. The wearing article according to claim 1, wherein the main body has a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent core interposed between the both sheets. . 6. The wearing article according to claim 1, wherein an elastic member extending in the longitudinal direction is attached in a stretched state near a side edge of the main body.