MXPA96004785A - Diap - Google Patents

Abstract

The present invention relates to a disposable diaper, in accordance with the present invention, having front and rear waist regions adapted to be detachably connected to each other by surface fasteners, each surface fastener comprising a fastener with a loop, operatively associated with the fastener. fastener component with hook, at least one pair of wings, extending outward from the transversely opposite sides of the rear waist region, have their outer surfaces made of non-woven fabric with which the component can be locked, and to the invention itself Allows the disposable, used diaper to be reliably rolled to be disposed of

Description

DISPOSABLE DIAPER DESCRIPTION OF THE INVENTION The present invention relates to a disposable diaper having front waist and rear waist regions adapted to be detachably connected to each other in their actual use. In the Japanese Utility Model Application No. Hei6-61227 there is disclosed a disposable diaper having front and back waist regions detachably connected therebetween by a pair of surface fasteners, each comprising a fastener component with hook and a fastener component with a loop. In this diaper, a pair of tape strips extend outward from the transversely opposite side edges of the back waist region, respectively, and each of these tape strips carries on its internal surface the fastener component with hook, adhesive zone and a cover area to protect the adhesive zone disposed in this order, starting from a longitudinally inner end of the strip of tape. To be discarded, the used diaper is wound and the adhesive areas, on the respective tape strips, are joined with the diaper at appropriate places thereof, to keep it in a rolled state. When the diaper is worn over the baby's body, the fastener components with hook, on the tape strips, are joined with the associated fastener components with loop, and the adhesive areas, on the tape strips, are covered with the cover areas bent over the same strips of tape in order to form tabs. The adhesive areas must be of sufficient length to ensure that the used diaper is reliably maintained in its rolled state and that the tabs inevitably have correspondingly long dimensions. Consequently, there is a fear that the baby who is wearing said diaper can easily take these long tabs and remove the diaper himself. Accordingly, it is a primary object of the invention to provide a disposable diaper adapted to be reliably maintained in its rolled state for disposal after use and which is free from the fear presented above. The object set forth above is achieved, according to the present invention, by a disposable diaper comprising a liquid-permeable top sheet, a liquid-impermeable backsheet and a liquid-absorbent core, disposed between these two sheets, respective pairs of front and rear wings extending outward from transversely opposite sides of the front and back waist regions of the diaper, one of the pairs carrying a pair of fastener components with hook and the other pair carrying a pair of fastener components with loop, adapted to be detachably joined with the fastener components with hook, the diaper being characterized in that the fastener components with hook are attached to the inner surfaces of the front or rear wings, and the outer surfaces of the wings are made of fabric non-woven, with which the fastener components with hook are peelably hinged two.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a plan view showing a modality of the diaper of the invention, as it partially separates or; Figure 2 is a sectional view taken along the line II-II in Figure 1; and Figure 3 is a perspective view showing the rolled diaper. A diaper 1, shown by Figure 1 in a plan view, as partially separated, comprises a liquid-permeable top sheet 2, a liquid-impermeable backing sheet 3 and a liquid-absorbent core 4, disposed between these two sheets 2 ,3. The diaper has a front waist region 6, a rear waist region 7 and a crotch region 8, extending between these two regions 6, 7. The front and rear waist regions 6, 7 are provided., along their transversely opposite sides, with front wings 11 and rear wings 12, respectively. The topsheet 2 and the backsheet 3 are placed one above the other, on their outwardly extending portions, beyond a peripheral edge of the core 4 and the internal surfaces of these portions are joined, as a whole, hermetically Water. The crotch region 8 is provided adjacent its transversely opposed side edges with resilient members 13 adapted to encircle the user's legs, and the rear waist region 7 is provided adjacent its longitudinal end with an elastic member 14 extending along the length of the legs. the line of the waist. These members 13, 14 are arranged between the upper sheet 2 and the backing sheet 3 and are secured in an elastically contractible condition to the internal surface of at least one of these two sheets 2, 3. A fastener component with hook 15 having a plurality of hook elements, a component of a surface / mechanical fastener, known under the trade name of Sailboat, is anchored to the inner surface of each rear wing 12 and a portion of this fastener component with hook 15 extends on one side of an outer lateral edge 12A of the wing 12, has its inner surface covered with a protective sheet 18. A fastener component with loop 16 having a plurality of loop elements, the other component of the surface / mechanical fastener , is anchored to the outer surface of each front wing 11 in order to extend transversely therefrom.

Figure 2 is a sectional view taken along the line II-II in Figure 1. As shown, an inner side edge 12B of each rear wing 12 is attached to a side edge of the outer surface of the sheet 3. An exposed portion of the fastener component with hook 15, defined by a width A, is peebly locked with the fastener component with associated loop 16, while the portion defined by a width B, covered with the sheet protection 18, does not participate in the subjection. The fastener component with hook 15 once engaged with the fastener component with associated loop 16 is forced in the direction indicated by the arrow P, the outer side edge 12A of the rear wing 12 being held by the user's fingers , so that the portion defined by the width A can be peeled from the rear wing 12, starting from its right side, as indicated by an imaginary line. In this state, the so-called peeling force is practically ineffective between the rear wing 12 and an external lateral edge 20 of the fastener component with hook 15, so that the outer lateral edge 20 is not separated, by means of peeling, of the rear wing 12. Figure 3 is a perspective view showing the diaper 1 used, rolled up to be discarded. The diaper 1 is rolled, starting from the front waist region 6 towards the rear waist region 7, with the top sheet 2 inside, and then the rear wings 12 are bent inwards, so that the fastener component with hook 15 associated with one of the rear wings 12 can be locked with the outer surface of the other rear wing 12. With the diaper 1, according to the illustrated embodiment, said fastening of the member 15 is facilitated by using non-woven fabric, such as non-woven spun lace fabric or spin-bonded nonwoven fabric, which is bulky and relatively fluffy, or mixed fiber nonwoven fabric comprising entangled crimped fibers together and thus forming a plurality of thin loops, to make at least rear wings 12 or its outer surfaces. If the upper sheet 2 and / or the back sheet 3 is made of said non-woven fabric, the rear waist region 7 of these sheets 2 and / or 3 can be transversely extended to form the respective rear wings 12. Yes the backs 12 are provided with the so-called tape fasteners, instead of the fastener components with hook 15 as illustrated, comprising tape strips laterally extending from the outer ends of the respective rear wings 12 and the fastener components. with hook 15 respectively attached to the inner surfaces of the tape strips, the tape strips or their outer surfaces can also be made of non-woven fabric, so that the fastener components with hook 15 can be locked with said non-woven fabric . To implement the invention, the appropriate materials commonly used in the field of the art can be used for the topsheet 2 and the backsheet 3. In the illustrated embodiment, the non-woven fabric or plastic film, which It is less rigid than the fastener component with hook 15 and is pleasant to the touch, it is used as the material for the protective sheet 18. However, it should be understood that the sheet 18 is non-essential to the invention and, therefore, , its use is optional. The joining of the respective components or members can be done by the use of an adhesive, e.g., of the type of heat fusion or using the heat sealing technique, provided that the components or members to be joined are of sealable nature with heat. It should be noted that no specific form of union is illustrated. With the diaper of the invention, the front and back waist regions are detachably connected to each other by the surface fastener, comprising the hooked fastener component and the loop fastener component, wherein the wings of the diaper are made of nonwoven fabric, with which the hooked fastener component can be locked, so that, after The used diaper has been rolled up for disposal, the hook fastener component can be reliably locked with the non-woven fabric and keep the used diaper in a rolled state. The diaper of said arrangement, does not require any means of adhesive fastening to retain the diaper is a rolled state and allows to use a tongue to peel the fastener component with hook of the rear wing, which has been formed in such a small size that it will be difficult for the baby to hold this tongue.

Claims (3)

1. A disposable diaper comprising a liquid-permeable top sheet, a liquid-impermeable backsheet and a liquid-absorbent core disposed between these two sheets, respective pairs of front and back wings extending outwardly from the transversely opposite sides of the regions of front and back waist of said diaper, one of said pairs carrying a pair of fastener components with hook and the other pair carrying a pair of fastener components with loop, adapted to be detachably fastened with said fastener components with loop, said diaper characterized in that: said hooked fastener components are attached to the inner surfaces of said front or rear wings, and the outer surfaces of said wings are made of nonwoven fabric, with which said hooked fastener components are peeledly bonded. A disposable diaper in accordance with claim 1, further characterized in that the pair of wings having said hooked fastener components anchored thereto comprise strips of tape extending outwardly from the transversely opposite side edges of said wings, and said hooked fastener components are anchored to the inner surfaces of said tape strips, and wherein said pair of wings, as well as said tape strips have their outer surfaces made of said nonwoven web. 3. A disposable diaper according to claim 1, further characterized in that said hook fastener components have a plurality of hook elements, said loop fastener components having a plurality of loop elements.