JP2012055497A - Tape type disposable diaper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a securing structure of fastening tapes without front target tape in a front body part and a tape type disposable diaper easily followable the change of a waist size due to the movement, time of empty stomach or time of full stomach of a wearer.SOLUTION: The fastening tapes 10 have male side plane fasteners 16 and female side plane fasteners 17 in the surface of the back sheet 2 side, the loop-shape securing selections can be formed by bonding the plane fasteners each other, a plurality of tape threading holes 11 constituted by longitudinally arranging expandable elongated members and bonding upper ends and the lower ends to the outside surface of the outside surface of the diaper are arranged in the outside surface of the front body part of the disposable diaper 1, the fastening tapes are secured by threading the distal end sides of the fastening tapes 10 through the tape threading holes 11 and then folding back the front end sides and bonding the plane fasteners 16, 17 each other when wearing the diaper.

Description

  The present invention relates to a tape-type disposable diaper having fastening tapes protruding laterally on both sides on the back side, and fastened to the ventral surface of the diaper and fitted with a diaper.

  Conventionally, a general tape-type disposable diaper that is commercially available is provided with fastening tapes 50, 50 for wearing diapers on both sides of the back body of the diaper for wearing, for example, as shown in FIG. At the time of wearing, after putting the front body and the back body of the diaper on the wearer's body, the fastening tapes 50 and 50 are brought to the ventral side, and a plastic material such as polyethylene on the ventral outer surface of the diaper, non-woven fabric, tricot The diaper is fixed by being fixed to a front target tape 51 (hereinafter also referred to as FTT) made of, for example.

  In the tape-type disposable diaper, the fastening tape 50 is given a predetermined engaging force so that the fastening tape 50 is not displaced or peeled off at the time of wearing, but on the other hand, there is a change in the movement of the wearer and the swelling of the abdomen. It is difficult to handle.

  In view of this, various techniques have been proposed in which the fastening tape 50 is made stretchable in order to follow the change in abdominal swelling due to fit to the waist, exercise, and fullness / hungry.

  Specifically, in the following Patent Document 1, in the case where the wearer's waist and crotch part is wrapped and attached, the diaper body is disposed across one part and the other part, and one end part is formed of an adhesive or a pressure-sensitive adhesive. A diaper fitting tape that is fixed to one part and the other end part can be fixed to another part by an adhesive, and at least the part between the fixing parts is free with respect to the main body and is extendable in the longitudinal direction. Proposed.

  Further, in the following Patent Document 2, an adhesive layer is formed on one side of at least the above two non-elastic bodies of the tape base material, each of which is composed of an elastic body whose center part is stretchable and both ends are non-elastic bodies. There has been proposed a stretchable fastening tape comprising a cut in the stretch direction of the elastic body.

  Further, in Patent Document 3 below, the fastening tape is fixed to the back side portion with an adhesive in order to be excellent in the adhesive strength of the fixing portion and the shape followability by the elastic expansion / contraction portion, and to easily secure the expansion / contraction length. A fixed portion and a protruding portion protruding from the back portion, and the protruding portion includes a distal end portion provided with a connecting portion for the connection, and a main body closer to the proximal end than the distal end portion. An elastic elastic member is fixed to at least a portion of the fastening tape from the fixing portion to the main body portion, and the main body portion positioned at the fixing portion of the elastic elastic member and the main body portion Among the parts located in the part, the part located in the fixing part is bonded and fixed to the fastening tape in a non-stretched state, and part or all of the part located in the main body part is stretched in the width direction. Adhesive and fixed to the fastening tape Has been that tape-type disposable diapers have been proposed.

Japanese Utility Model Publication No. 57-157209 JP-A-62-81474 JP 2010-22550 A

  In such a tape-type disposable diaper, it is difficult to attach the diaper firmly after one stop, and in many cases, the diaper is actually attached by several reattachments. For example, when one fastening tape 50 is fastened to the FTT 51 and the other fastening tape 50 does not reach the FTT, there is an annoyance that must be fastened and how many times the fastening is repeated. During this time, FTT51 sometimes broke. In order to solve this problem, if the thickness of the FTT 51 is increased, a problem such that the wearing feeling is impaired due to the edges and corners hitting the abdomen due to the rigidity of the FTF 51 will occur secondarily.

  On the other hand, as described in Patent Documents 1 to 3, when the fastening tape is made stretchable, it is easy to cope with movement and dimensional change of the abdomen, but the problem that the FTT 51 is broken still remains. At the same time, there is a problem that the fastening tape gives a feeling of pressure especially to the side part.

  Thus, the main problem of the present invention is to provide a fastening structure for a fastening tape that does not have a front target tape in the front body, and to easily follow the movement of the wearer and changes in waist dimensions such as when hungry to full. It is to provide disposable diapers.

In order to solve the above-mentioned problem, as the present invention according to claim 1, an absorbent body is interposed between the liquid-permeable top sheet and the back sheet, and attached to both sides of the back side so as to protrude sideways. In a tape-type disposable diaper having a fastening tape, wherein the diaper is attached to the body by fastening the fastening tape to a ventral surface of the diaper.
The fastening tape includes a male side fastener and a female side fastener on the backsheet side surface, and a loop-shaped stopper can be formed by joining the surface fasteners together.
The outer surface of the front body of the diaper is provided with a plurality of tape threaders in which stretchable elongated members are vertically oriented and the upper and lower ends are joined to the diaper outer surface,
A tape-type disposable diaper characterized in that, when a diaper is attached, if the front end side of the fastening tape is passed through the tape threader, the front end side is folded and fastened by joining surface fasteners together. Provided.

  In the invention of claim 1, the fastening tape includes a male side fastener and a female side fastener on the back seat side surface, and a loop-shaped stopper can be formed by joining the surface fasteners together. . On the other hand, the outer surface of the front body of the diaper is provided with a plurality of tape loops in which stretchable elongated members are oriented vertically and the upper and lower ends are joined. Then, when mounting, if the front end side of the fastening tape is passed through the tape threader, the front end side is folded and the surface fasteners are joined to each other to be fastened.

  Therefore, since the front target tape is not provided on the front body of the diaper, the edge or corner of the tape hits the abdomen as in the conventional case, and the wearing feeling is not impaired. In addition, since the elasticity is not given to the fastening tape but to the tape thread, the problem that the fastening tape gives a feeling of pressure to the side like a conventional diaper is also eliminated. become able to. Furthermore, even if the waist size changes due to daily movement or when the stomach is hungry to full, the tape thread is stretchable, so the fastening tape can be stretched (movable) in the diaper width direction, and the waist It can follow dimensional changes.

  As the present invention according to claim 2, there is provided a tape-type disposable diaper according to claim 1, wherein a plurality of the tape threaders are arranged along a substantially width direction of the diaper.

  In the invention according to claim 2, a plurality of the tape threaders are arranged along the substantially width direction of the diaper. Therefore, it can be fixed to any tape thread according to the body shape.

  According to a third aspect of the present invention, the plurality of tape threaders are arranged along a substantially width direction of the diaper, and a difference in stretchability is provided between the center side and the side side of the diaper. A tape-type disposable diaper is provided.

  In the invention according to claim 3, a plurality of the tape threaders are arranged along the substantially width direction of the diaper, and a difference in stretchability is provided between the center side and the side side of the diaper. is there. In the case of a relatively slender body shape, the change in the bulge of the abdomen is small, and in the case of a thick body type, the change in the bulge of the abdomen seems to be large. It is possible to cope more finely according to the body type difference by setting the stretchability of the tape threader relatively low on the side and relatively large on the side.

  The tape-type disposable diaper according to any one of claims 2 and 3, wherein the tape threading is arranged so that an upper end edge thereof substantially coincides with a waist opening edge of the diaper. .

  The invention according to claim 4 utilizes the stretchability of the tape thread for the fit around the waist. That is, by arranging the upper end edge of the tape thread arranged in a plurality along the horizontal direction so as to substantially coincide with the waist opening edge of the diaper, an effect close to shearing can be obtained around the waist. Fit will be improved.

  As the present invention according to claim 5, there is provided the tape-type disposable diaper according to any one of claims 1 to 4, wherein a plurality of the tape threaders are arranged along a substantially longitudinal direction of the diaper.

  In the invention described in claim 5, a plurality of the tape threaders are arranged along the substantially longitudinal direction of the diaper. In this case, since the fastening tape is fixed obliquely downward, the crotch portion side is lifted, so that the fit around the legs can be improved.

  As described above, according to the present invention, it is possible to provide a fastening structure of a fastening tape that does not have a front target tape on the front body of the diaper, and to follow the movement of the wearer and changes in waist dimensions such as when hungry to full. It becomes possible to provide a tape-type disposable diaper which is easy to do.

It is a partial fracture development view of tape type disposable diaper 1 concerning the present invention. It is the II-II arrow directional view of FIG. It is a reverse view of the diaper 1. It is a procedure figure which shows the fastening point by the fastening tape 10 of the disposable diaper 1. FIG. FIG. 3 is a plan view showing an example of a tape threading 11. FIG. 3 is a plan view in which each tape threading 11 is unitized. It is a wearing state perspective view of disposable diaper 1. FIG. It is a figure which shows the other example of arrangement | positioning of the tape loop. It is a figure which shows the other example of arrangement | positioning of the tape loop. It is a wearing state figure of the conventional tape type disposable diaper.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[Disposable diaper structure]
In FIG. 1, a tape-type disposable diaper 1 (simply referred to as a diaper) is made of cotton-like pulp or the like, has a certain degree of rigidity, for example, an hourglass shape (or rectangular shape), and is surrounded by a crepe paper 5. Body 4, liquid-permeable top sheet 3 made of a perforated or non-porous nonwoven fabric or a perforated plastic sheet, etc., disposed so as to cover the surface side (use surface side) of absorbent body 4, and the absorbent body 4, a leak-proof sheet 6 made of polyethylene or the like so as to cover at least the entire area of the absorber 4, and an outer surface side (non-skin contact surface side) of the leak-proof sheet 6 The outer back sheet 2 that defines the outer shape of the diaper and the three-dimensional gather BS that stands on the surface side are formed on both sides of the diaper. The side nonwoven fabric 7, 7 for composing the side-flap portions SF with preparative 6 and backsheet 2, is mainly composed of a fastening tape 10, 10 Metropolitan provided on the diaper dorsal sides. Moreover, in the abdominal waist part and back side waist part of a diaper, the said outer surface back sheet 2, the leak-proof sheet 6, and the liquid-permeable top sheet 3 are all extended, and the end flap part EF in which the absorber 4 does not exist is formed. ing.

In the following, each component will be specifically described in detail.
The absorbent body 4 is made of, for example, fluffy pulp and a water-absorbing polymer, and the planar shape can be a substantially hourglass shape having constricted portions on both sides in order to reduce the contact with the legs. However, it is a rectangle in the illustrated example. The water-absorbing polymer is mixed in the pulp constituting the absorber, for example, as granular powder. Examples of the pulp include chemical fibers obtained from wood, cellulose fibers such as dissolving pulp, and artificial cellulose fibers such as rayon and acetate. It is preferably used in terms of price. When the absorbent body 4 is surrounded by the crepe paper 5 as in the illustrated example, the crepe paper is interposed between the liquid-permeable surface sheet 3 and the absorbent body 4 as a result, and the absorbency is excellent. The crepe paper 5 quickly diffuses body fluid and prevents reversal of these menstrual blood and the like.

  The said absorber 4 contains a pulp fiber at least and can mix a synthetic fiber arbitrarily. When mixing synthetic fiber, what mixed the ratio of the said pulp fiber: synthetic fiber by weight conversion 80-20: 20-80, Preferably 40-60: 60-40 is desirable.

  As the synthetic fiber, for example, polyolefins such as polyethylene or polypropylene, polyesters such as polyethylene terephthalate and polybutylene terephthalate, polyamides such as nylon, and copolymers thereof can be used. It may be what you did. In addition, a composite fiber such as a core-sheath fiber, a side-by-side fiber, or a split fiber having a fiber having a high melting point as a core and a fiber having a low melting point as a sheath can also be used. In the case of a hydrophobic fiber, it is desirable to use a synthetic fiber that has been surface-treated with a hydrophilizing agent so as to have an affinity for body fluids.

  As the liquid-permeable top sheet 3, a porous or non-porous nonwoven fabric or a porous plastic sheet is preferably used. Examples of the material fibers constituting the nonwoven fabric include synthetic fibers such as polyethylene or polypropylene, synthetic fibers such as polyester and polyamide, recycled fibers such as rayon and cupra, and natural fibers such as cotton. A nonwoven fabric obtained by an appropriate processing method such as a lace method, a spun bond method, a thermal bond method, an air through method, a melt blown method, or a needle punch method can be used. Among these processing methods, the spunlace method is excellent in terms of flexibility and drapeability, and the thermal bond method is excellent in terms of being bulky and soft.

  The leak-proof sheet 6 is made of a sheet material having at least a water shielding property such as an olefin resin sheet such as polyethylene or polypropylene, and is installed in a range covering at least the entire area of the absorber 4 in order to prevent leakage. In recent years, those having moisture permeability are preferably used from the viewpoint of preventing stuffiness. This water and moisture permeable sheet is a microporous sheet obtained by, for example, melt-kneading an inorganic filler in an olefin resin such as polyethylene or polypropylene to form a sheet, and then centrifuging in a uniaxial or biaxial direction. If the sheet thickness is the same, the rigidity is lower than that of the non-porous sheet, which is superior in terms of flexibility.

  As the side nonwoven fabric 7, a water-repellent treated nonwoven fabric or a hydrophilic treated nonwoven fabric can be used from the viewpoint of an important function. For example, if importance is placed on functions such as preventing permeation of menstrual blood or vaginal discharge, or enhancing the touch feeling, water repellent treatment coated with silicon, paraffin or alkylchromic chloride water repellent It is desirable to use a nonwoven fabric. In addition, if importance is attached to absorbability of body fluids, a method of polymerizing a compound having a hydrophilic group, for example, an oxidation product of polyethylene glycol, in the production process of synthetic fibers, or a metal such as stannic chloride Use a non-woven fabric that has been treated with salt to make the synthetic fiber swelled or porous, such as by partially dissolving the surface to make it porous and depositing metal hydroxide, and applying hydrophilicity by applying capillary action. It is desirable to make it.

  The liquid-permeable top sheet 3 protrudes slightly outward from the side edge of the absorber 4 and is joined to the leak-proof sheet 6. The side nonwoven fabric 7 has an outer portion extending to the outer edge rather than the vicinity of the side edge portion of the absorbent body 4 and is joined to the leakage preventing sheet 6 and the outer back sheet 2, and the laminated sheet portion constitutes a side flap SF. Yes.

  In the side flap portion SF, a plurality of elastic stretch members 8 and 8 are arranged in the longitudinal direction of the diaper, and in the illustrated example, a flat gather is formed. This flat gather holds the diaper tightly around the legs when worn, thereby improving fit and preventing the diaper from shifting.

  On the other hand, a three-dimensional gather BS standing on the surface side is formed by the nonwoven fabric sheet portion on the inner side of the fixed portion of the side nonwoven fabric 7. This three-dimensional gather BS has a standing end near the side edge of the absorbent body 4, and its tip is folded back twice along the longitudinal direction of the diaper. If necessary, a plurality of elastic elastic members are provided, and the three-dimensional gather BS is erected using the elastic force.

  As the elastic elastic members 8 and 9, materials such as styrene rubber, olefin rubber, urethane rubber, ester rubber, polyurethane, polyethylene, polystyrene, styrene butadiene, silicon, polyester and the like that are usually used can be used. .

  The material fibers constituting the side nonwoven fabric 7 can be synthetic fibers such as polyethylene or polypropylene, synthetic fibers such as polyester or amide, recycled fibers such as rayon or cupra, and natural fibers such as cotton. The nonwoven fabric obtained by an appropriate processing method such as a spunbond method, an air-through method, a melt blown method, a needle punch method can be used. In particular, the side nonwoven fabric 7 constituting the side flap portion SF has a feeling of wrinkles. In order to eliminate it and to prevent stuffiness, it is preferable to use a non-woven fabric that suppresses the basis weight and has excellent air permeability.

  A nonwoven fabric is used as the outer back sheet 2. As the material fibers constituting the nonwoven fabric, synthetic fibers such as polyethylene or polypropylene, synthetic fibers such as polyester and polyamide, recycled fibers such as rayon and cupra, and natural fibers such as cotton can be used. A nonwoven fabric obtained by an appropriate processing method such as a spunlace method, a spunbond method, a thermal bond method, a melt blown method, or a needle punch method can be used. Among these non-woven fabrics, non-woven fabrics manufactured by an air-through method in which heated air is sent in the drum conveyance process during the manufacture of the non-woven fabric and the fibers are thermally fused are suitably used. The air-through method is advantageous in that the fibers are fused to each other by the heat of high-temperature air, so that the space ratio is high and the touch is soft and bulky.

In the present disposable diaper 1, a plurality of elastic elastic members 13, 13... Are stretched between the sheets 14 on the inner surface side of the outer back sheet 2 around the waist of the diaper in order to improve the adhesion to the wearer. The elastic sheet 12 adhered in the above is stuck, and elastic elastic force is given along the waistline direction.
[Fastening structure of fastening tape 10]

  The fastening tape 10 is made of a fastening base material 15 such as plastic, polylaminated non-woven fabric, non-woven fabric, or paper, and a base portion 15A is fixed between the side non-woven fabric 7 and the outer back sheet 2, and a protruding portion 15B protruding sideways. A male side fastener 16 and a female side fastener 17 are provided on the surface of the outer backsheet 2 side of each other, and a loop-shaped stopper can be formed by joining the surface fasteners 16 and 17 together. .

  The male side fastener 16 is adhered to the fastening base material 15 with an adhesive so as not to be peeled off, and has a number of hook elements on the surface. The hook element has, for example, a letter shape, a J shape, a mushroom shape, a T shape, and the like, but may have any shape. Preferred is a T-shape.

  The female side surface fastener 17 is adhered to the fastening base material 15 with an adhesive so as not to be peeled off, and has a plurality of loop elements with which the hook elements can be engaged on the surface. The separation distance (inside dimension) between the male side male fastener 16 and the female side male fastener 17 is preferably not less than twice the width dimension of the tape thread 11 described later. Note that the positional relationship between the male side fastener 16 and the female side fastener 17 may be reversed.

  On the other hand, a plurality of tape loops 11 are provided on the outer surface of the front body of the diaper 1. The tape threading 11 is formed by forming a stretchable elongated member in a vertical orientation and joining the upper end and the lower end to the outer surface of the diaper to form a through hole for the fastening tape 10. is there. As shown in FIGS. 1 and 3, a plurality of the tape threaders 11 are provided so as to form a line at intervals along the substantially width direction of the diaper 1. In the illustrated example, a total of six diapers are provided, three on each side, with the diaper center as a boundary.

  The material of the tape threader 11 includes natural rubber, acrylic rubber (ACM), nitrile rubber (NBR), isoprene rubber (IR), urethane rubber (U), ethylene propylene rubber (EPM, EPDM), chloroprene rubber (CR ), Silicone rubber (Q), styrene-butadiene rubber (SBR), butadiene rubber (BR), fluorine rubber (FKM), polyisobutylene (butyl rubber IIR), or other rubber-based materials, or as shown in FIG. In addition, the nonwoven fabric 18 can be folded and laminated in several layers, and the elastic material can be used that has been made elastic by disposing the thread-like elastic rubbers 19, 19. Moreover, in order to join an upper end and a lower end to a diaper, it can fix with an adhesive agent or a stitch | suture.

  The tape loops 11 may be individually attached. However, in production, as shown in FIG. 6, the tape loops 11, 11,... It is desirable to make it into a diaper 1.

  In attaching the diaper 1, as shown in FIG. 7, after the front body and the back body of the diaper 1 are respectively applied to the wearer's body, the fastening tapes 10, 10 are brought to the ventral side. If the front end side of the fastening tape 10 is passed through an arbitrary tape threading 11, the front end side is folded and the surface fasteners 16 and 17 are joined together to be fastened. Even if there is a change in the waist dimension due to daily movement during fasting or when the stomach is hungry to full, the tape thread 11 has elasticity, so that the fastening tape 10 can be expanded and contracted in the width direction of the diaper. It can follow flexibly.

[Second embodiment]
In the above embodiment, a plurality of the tape threaders 11 are provided so as to form a row at intervals along the substantially width direction of the diaper 1. However, as shown in FIG. It is also possible to arrange a plurality of them along. In this case, in the fastening tape 10, the dimension of the protruding portion 15B protruding sideways is increased, the male side male fastener 16 is provided at the tip, and the female side surface fastener 17 is provided at the intermediate position. In the wearing state indicated by the alternate long and short dash line, the fastening tape 19 is fixed obliquely downward, so that the crotch side is lifted, so that the fit around the legs can be improved.

  Furthermore, as shown in FIG. 9, the fastening tape 10 is composed of two upper and lower fastening tapes 10A and 10B, and the upper fastening tape 10A is attached to the upper tape thread 11 in the state of wearing as shown by the one-dot chain line. If the lower fastening tape 10B is fastened to the lower tape thread 11, a further fit can be obtained.

  In the second embodiment, the tape threading 11 is provided in two rows along the longitudinal direction of the diaper. However, four or six rows may be provided.

  DESCRIPTION OF SYMBOLS 1 ... Tape-type disposable diaper, 2 ... Outer surface back sheet, 3 ... Liquid-permeable top sheet, 4 ... Absorber, 5 ... Crepe paper, 6 ... Leak-proof sheet, 7 ... Side nonwoven fabric, 8.9.13 ... Elastic expansion and contraction 10: Fastening tape, 11: Tape threading, 16: Male side fastener, 17 ... Female side fastener, SF ... Side flap, EF ... End flap

Claims (5)

An absorbent body is interposed between the liquid-permeable top sheet and the back sheet, and has a fastening tape attached to both sides of the back side so as to protrude sideways, and the fastening tape is placed on the ventral surface of the diaper. In a tape-type disposable diaper in which the diaper is attached to the body by fastening,
The fastening tape includes a male side fastener and a female side fastener on the backsheet side surface, and a loop-shaped stopper can be formed by joining the surface fasteners together.
The outer surface of the front body of the diaper is provided with a plurality of tape threaders in which stretchable elongated members are vertically oriented and the upper and lower ends are joined to the diaper outer surface,
A tape-type disposable diaper characterized in that, when a diaper is attached, if the front end side of the fastening tape is passed through the tape threader, the front end side is folded back and joined together by hook-and-loop fasteners.   The tape type disposable diaper according to claim 1, wherein a plurality of the tape threaders are arranged along a substantially width direction of the diaper.   2. The tape-type disposable diaper according to claim 1, wherein a plurality of the tape threaders are arranged along a substantially width direction of the diaper, and a difference in stretchability is provided between the center side and the side side of the diaper.   The tape-type disposable diaper according to any one of claims 2 and 3, wherein the tape threader is arranged so that an upper end edge thereof substantially coincides with a waist opening edge of the diaper.   The tape type disposable diaper according to any one of claims 1 to 4, wherein a plurality of the tape threaders are arranged along a substantially longitudinal direction of the diaper.

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