WO1993018728A1 - Washable reusable nappy with a disposable layer for faeces - Google Patents

Abstract

Disclosed is a repeatedly washable and reusable "nappy" for babies, children and adults, with a disposable layer (10) for faeces. Apart from the disposable layer, the nappy consists of a unit comprising a liquid-tight outer layer (3), a liquid-permeable covering layer on the inner side (2), and, between the latter two layers, an absorbant body (5), as well as integral elastic strips (4) and width-adjustable closure pads (6). These are held together by stitching or bonding.

Description

 Ashable, reusable diaper with disposable layer for excrement description

The innovation concerns a multi-washable and reusable diaper with a disposable layer for excrement for babies, children and adults consisting, apart from the disposable layer, of a unit that has a liquid-tight outer layer, a liquid-permeable cover on the inside, and an absorbent element arranged in between , as well as incorporated elastic-stretchable bands and a width-adjustable closure system by welding and / or sewing together.

Different types of diapers are known. The one time '

Use certain disposable diapers described in various patents. These diaper pants usually consist of a liquid-permeable cover made of non-woven material, a liquid-tight outer layer made of a thin polyethylene film and a suction pad arranged therebetween consisting essentially of cellulose fibers with incorporated polyacrylates for urine binding. Furthermore, various washable diaper pants are known.

In DE AI 3533881, for example, a washable diaper pant is described which has a rectangular round body made of cotton, in which several cotton towels are also incorporated, and a loosely absorbent insert can be introduced. In the utility model 69113818.3 a Diaper pants listed in which an inner layer of 100 '/. Baurr * olle, an absorbent core made of natural fibers and an outer layer of linen and polyurethane is used. Utility model G 9201050.4 describes a washable diaper pant whose outer layer consists of a polyamide fabric with a polyurethane coating. The internal absorbent core is made of cellulose, polyester and cotton. The inner cover consists of a cotton fabric. Although the modern, easy-to-use disposable indices absorb and bind the aggressive urine through the use of the chemical liquid binder and thereby keep the skin of the user dry, their use represents an unnecessary environmental impact due to the consumption of valuable raw materials and the waste generated. The washable diaper pants reduce the environmental impact and the volume of the mill, but due to the use of cotton and natural fibers in the absorbent core and inner cover, because of their low absorption potential, the aggressive urine comes into permanent contact with the skin of the user. This leads to drenching of the clothes and inflammation as well as irritation of the skin.

The object of the invention is to create a washable, reusable diaper which has a large storage volume of liquid and does not or only slightly return the liquid to the skin of the user due to moisture protection, and leakage of liquid on the leg. and waist area almost completely prevented even under extreme loads. It should also ensure a secure, closable locking system, so that it is easy to put on and handle. In addition, the diaper should have an additional leakage protection in the absorbent area. Furthermore, it should be soft and easy to wear and allow a similar comfort to a commercially available disposable diaper when worn. It should be washable in many cases and thus contribute to reducing the volume of waste and avoiding raw materials.

This problem is solved with the measures of claim 1.

The washable, reusable disposable diaper for

Excrement is equipped with new types of fleece and foils and materials so that it firstly separates the coarse solids from the absorbent body and secondly allows the liquid substances to be absorbed by the absorbent body, but releases almost no liquid to the user's skin. Furthermore, the use of the disposable layer from the carrier or auxiliary persons (in babies or children) contributes to a decisive improvement in the disposal of the coarse solids, since this disposable layer can easily be removed and disposed of for excrement. This makes cleaning the diaper much easier, since only the liquid substances are bound in the diaper. The diaper is manufactured with newly developed materials by means of a heat connection or ultrasound connection process or also by sewing.

The purpose of the invention lies in the waste b.z.w. Avoidance of raw materials compared to conventional disposable diapers, which cause a gigantic volume of waste and the associated consumption of raw materials in the incontinence period of the consumer.

In addition, the diaper is also suitable for the area of adult incontinence, since a psychological inhibition threshold when buying and disposing of invented products can be reduced.

By using different materials in the disposable layer, the skin tolerance of the user can be taken into account.

An advantageous embodiment of the invention is specified in claims 1 to 14.

The development according to claim 1 consists in that the outer layer provides reliable protection against moisture for clothing and prevents the winds 1 from being wet. The development according to claim 2 for the use of the carrier is that the soft grip or soft comfort is maintained by spot welding or sewing at the specified points, and a secure connection is guaranteed. In addition, a connection with the cover layer on the inside and the absorbent body, which can be configured by embossing lines, enables faster absorption of the liquid by the absorbent body.

By a multiple washable absorbent body, which remains stable during the cooking process and is also protected by the casing of the outer layer and the cover layer, which excludes abrasion of the absorbent body, is given in the embodiment according to claim 3.

In order to prevent fluid leakage in the diaper in the waist region and edge region of the legs, and to achieve a good anatomical shape of the diaper, the embodiment according to claims 4 and 5 is used. The development according to claim 6 offers the possibility of ensuring an individual adjustment of the waistband of the diaper in the waist area and the associated fit of the diaper, as well as a secure closure of the diaper. The development according to claims 7 and 8 results in a liquid-conducting function in the area of the absorbent body. The cover layer on the inside is also characterized by a "REWET effect" in the area of the absorbent body, good suppleness, which is due to the dense perforation, and very good wearing properties. The cover layer can be designed with additional leak protection in the area of the absorbent body in order to keep the sometimes liquid excrement in the middle of the diaper.

In order to ensure hygienic use, skin-friendliness and filtering properties, the embodiment according to claims 9 and 10 is used. The liquid is quickly passed into further layers by the user's skin. A very good "REWET effect" due to the hydrophilic finish of the fleece and the associated binding of the excrement can be attributed to this. Furthermore, there is a safe and problem-free removal of the excrement from the diaper (user-friendliness), as well as very good disposal of the material with a small volume of waste (approx. 2 grams of the specified material per application). The disposable layer can be designed with an additional outlet protection in the area of the absorbent body in order to keep the sometimes liquid excrement in the middle of the diaper. Furthermore, allergic skin reactions can be avoided with the use of natural materials.

The invention is explained in more detail below with the aid of drawings which illustrate only one embodiment. 1 shows a perspective view of a diaper according to the invention in the semi-erect state with the cover layer cut open on the inside but without a disposable layer for excrement.

Fig. 2 shows a cross section through the diaper along the line I-I.

Fig. 3 shows a second cross section through the diaper along the line II-II.

Fig. 4 is a perspective view of the cover layer on the inside in a large magnification. Fig. 5 is a perspective view of a weld in high magnification.

The diaper shown in Fig. 1 is designated as a whole by (1). It essentially consists of a liquid-permeable covering layer on the inside (2), that is to say a perforated, thermoplastic film layer or a perforated, thermoplastic non-woven layer or a perforated, thermoplastic non-woven film composite layer or a combination with one of the materials and one Ther obonding fleece preferably made of polypropylene. Furthermore, it consists of a liquid-tight outer layer (3), which consists of a thermobonding fleece or otherwise solidified fleece (3a) and a film layer (3b) applied under heat from the same material, that is to say, for example, from a lightweight polypropylene fleece with a thin film applied under heat Polypropylene film layer as well as a suction body (5) arranged between the covers. On the cover layer on the inside (2), an additional leak protection (13) is designed parallel to the leg area so that it consists of two parallel beads that are folded within the cover layer and can then be welded or sewn by a seam, and can be arranged in the absorbent area (5). The absorbent body (5) consists of a highly liquid-absorbent, washable cellulose fleece with a polyester component or cellulose fleece with a polyester component and an applied and bonded polyester layer or a layer of other plastics that has been consolidated by needling as well as heat and / or pressure. The absorbent body (5) is connected to the cover layer on the inside with the connecting seams (15). Also arranged between the cover layers parallel to the leg and / or waist region are elastic-stretchable bands (4) sewn under tension on one of the cover layers, which slightly curl the parts surrounding them when the diaper is in use. Also one can

Leakage protection (8) in the waist area (9) under or on the cover layer on the inside (2) so that it overlaps the absorbent body (5) in the waist area. The leakage protection consists of the material of the outer layer (3) or a thin film made of polypropylene or can be processed by folding the outer layer inside. The two covers (2) and (3) protrude on all sides of the suction pad and are welded, connected or sewn to one another with the leakage protection in the waist region to form an edge tab. The weld, which consists of broken lines running alongside one another, is arranged next to the rim area of the absorbent body, next to the elastically stretchable bands and in the rim area of the diaper, ie in the leg and waist area. It can only be welded on the surface where the two covers and the leakage contactor meet. The welding can be carried out by a heat connection or ultrasound connection process. A connection by means of seams or another connection can also be arranged in the manner of welding the two covers.

The diaper is also equipped with a re-opening and closing, wide-adjustable closure system (6) which is welded or sewn on the inside in the waist area on the side of the outer layer or the side of the cover. The locking system can consist of polypropylene or similar materials. When in use, the diaper is put on and one end of the closure system is attached to the counterpart (6 ') on the opposite diaper part (11) to form pants. Fig. 2 shows the arrangement particularly clearly in cross section. The same parts are provided with the same reference numerals. The arrangement of the weld seams (12), the arrangement of the connection seams (15) and the arrangement of the disposable layer for excrement can be seen. In addition, the arrangement of the additional leakage protection (13) on the cover layer ^{^} on the inside (2), which consists of two beads running in parallel, and the associated weld seams (12) can be seen. The leakage protector is also on the disposable layer (14), which, like the leakage protector on the cover layer, is on the inside (13) by two parallel ones

Bead in the absorbent body area (5) is formed by a weld seam each and can be arranged parallel to the leg area, and the associated weld seams can be seen. 3 shows a further cross section in the region of the abdomen in a particularly clear manner. The same parts are provided with the same reference numerals. The arrangement of the counterpart of the wide-adjustable missile system (6 '), which can be opened and closed again, as well as the leakage protection (B) and the free-standing disposable layer for excrement (10) can be seen. The disposable layer for excrement (10) consists of a very light-weight, hydrophilic polypropylene thermal fleece with a "REWET finish" or a layer of modified natural materials, which is reinserted in the diaper body (1) before each new use of the diaper after cleaning .

FIG. 4 shows a particularly clear representation of the cover layer on the inside in perspective. The particularly narrow perforation of the perforated thermoplastic film or the perforated thermoplastic fleece or the perforated thermoplastic fleece film composite is illustrated.

5 shows a particularly illustrative representation of the weld seam between the two cover layers. The interrupted lines of the weld seam are particularly illustrated by welded points that are lined up.

Reference number 1 list

1 diaper or diaper body

2 cover layer on the inside

3 outer layer

3a thermal bonding fleece 3b film layer

4 Elastic-stretchy tapes or threads

5 suction bodies

6 adjustable locking system

6 'counterpart of the width-adjustable closure system 7 edge area of the diaper

8 Leak protection in the front waist area 8 'Leak protection in the rear waist area

9 waist area of the diaper

10 Disposable layer for excrement 11 Diaper part in the abdominal area

12 welds

13 Leakage protection on the cover layer on the inside

14 Leakage protection on the disposable layer for excrement

15 connecting seams

Two pages of drawings,

Claims

Claims 1. Multiple washable and reusable "diaper" with one Disposable layer for excrement for babies, children and adults, apart from the disposable layer, consisting of a unit with a liquid-tight outer layer, a liquid-permeable cover layer on the inside, an absorbent element arranged between them, as well as incorporated elastic-stretchable bands and a wide adjustable closure system is connected to one another by welding and / or sewing, characterized in that the outer layer (3) is made of a thermobonding nonwoven or otherwise solidified nonwoven (3a), which is connected to a film layer (3b) made of the same material and applied under heat is liquid-tight, preferably consists of polypropylene or similar materials and is formed. 2. "Diaper" according to claim 1, characterized in that the outer layer (3) with the cover layer on the inside (2) which projects beyond the absorbent body (5) on all sides, next to the edge region of the absorbent body (5), in addition the incorporated elastic-stretchable bands or threads in the leg and / or waist region (4) as well as in addition to the incorporated closure systems (6) and in the edge region (7) of the diaper and the cover layer on the inside (2) with the absorbent body (5 ) is connected, sewn, welded or glued. 3. "Diaper" according to one of claims 1 or 2, characterized in that in the middle part of the diaper between the outer layer (3) and the cover layer on the inside (2), an absorbent body (5) consisting of one or more layers, preferably made of Cellulose fleece with a polyester component or cellulose fleece with a polyester component and an applied and bonded polyester layer or a layer made of other plastics Needling and heat and / or pressure has been solidified or is made of similarly strong liquid-absorbing materials, and consists of it. 4. "Diaper" according to one of claims 1 to 3, characterized in that in the leg and / or waist region (7/9) between the outer layer (3) and the cover layer on the inside (2) incorporated elastic stretchable tapes or threads (4) which are preferably sewn, connected, welded or glued and arranged parallel to the respective outer edge with the outer layer (3) and / or the cover layer on the inside (2). 5. "Diaper" according to one of claims 1 to 4, characterized in that an outlet protector (8/8 ') in the waist region (9), which preferably consists of a film or of the material of the outer layer (3), is introduced can be or the outer layer (3) can be processed by internal folding to a leakage protection (8) by sewing, gluing, connecting or welding. 6. "Diaper" according to one of claims 1 to 5, characterized in that in the waist region (9) there is a re-opening and closing, width-adjustable closure system (6) which on the outer layer (3) or on the cover layer the inside (2) is welded, sewn, connected or glued. 7. "Diaper" according to one of claims 1 to 6, characterized in that the cover layer on the inside (2) consists of a perforated, thermoplastic film or a perforated, thermoplastic fleece or from a perforated, thermoplastic Vliesfolienvεrbund or can be formed. A combination of the above-mentioned materials and a thermobonding nonwoven or otherwise solidified nonwoven or similar materials which are welded, connected, sewn or glued, exist or are formed. 8. "Diaper" according to one of claims 1 to 7, characterized in that the materials of the cover layer on the inside preferably consist of polypropylene or the like, and by forming two parallel beads that serve as additional leakage protection (13) from the same Material, which are arranged in the area of the absorbent body and run parallel to the leg area, can be designed, made or formed by welding seams (12) or quilting seams. 9. "Diaper" according to one of claims 1 to 8, characterized in that the disposable layer for excrement (10) is preferably made of polypropylene with a hydrophilic finish or similar materials such as modified natural materials which have similar properties. 10. "Diaper" according to one of claims 1 to 9, characterized in that the disposable layer for excrement (10) is renewed before each new use of the "diaper" on the cover layer of the inside (2) and by forming two parallel beads, which serve as additional leakage protection (14) made of the same material, which are arranged in the area of the suction body (5) and run parallel to the leg area by means of welded seams (12) or quilted seams.