FASTENING ARRANGEMENT FOR ABSORBENT GARMENTS

Abstract: An absorbent garment such as an incontinence diaper consists of a belt (4) and an absorption unit (2), the rear short side (14) of which is preferably releasably joined with the belt. The opposite short side (16) of the absorption unit, situated at the front of a user, has two end parts, each situated at one end of the short side, which each by means of their hook and loop fastening means (28) are releasably connectable with the waist belt (4) in a plurality of positions in relation thereto. Each fastening means (28) has a piece (32) of first hook and loop material non-releasably connected with one of the casing layers (22) within the respective end parts, and a therewith cooperating piece (30) of second, complementary hook and loop material which on its side facing away from the hook and loop means is provided with an adhesive layer (34) which in the unused state of the fastening means (28) is covered by a protective layer (36). The surface of the waist belt (4) intended for cooperation with the fastening means (28) does not in this case have to be formed of a material which has the ability to cooperate, by gripping, with the first hook and loop material (32) but can be made of a thinner, more flexible and cheaper material. The protective layer (36) is suitably fastened to the inner casing layer (20) on the end part of the front short side (16), whereby a garment with clean contours is obtained and loose pieces of protective layer avoided when the absorption unit is brought into use the first time.

Description: FASTENING ARRANGEMENT FOR ABSORBENT GARMENTS Field of the invention The present invention relates to absorbent garments, especially incontinence protectors, according to the preamble to the appended claim 1. Background An absorbent garment of the above mentioned type is described in the Swedish Patent Application 9301631-9 and shows fixed tapes of hook material for hook and loop joints on the absorption unit, also known as a chassis. These are intended to cooperate with the outside of the belt. For this purpose the outside of the belt is made as a unit from a complementary hook and loop material suitable for cooperation with the hook material - a loop material. The belt is made as a multilayer laminate. In order for the fastening means to be able to hold up a large, fluid-drenched absorption unit by the belt, a hook and loop material with a relatively high force transmitting ability is required. Such materials are expensive, wherefore the belt becomes expensive. This is unfavourable, especially if the belt is intended for single use or is fastened to a garment of single use-type. A similar fastening between an absorption unit and a belt is shown in EP-A-0 409 307, where the belt is intended to be able to be used a number of times. Additionally, GB 2 257 895 describes a hook and loop fastening arrangement in another type of product viz. an hourglass-shaped diaper or incontinence protector without a belt. In each end part of the rear waistband is fastened a projecting tape, which supports a hook and loop fastening means. This has two hook and loop tapes which grip each other and an outwardly facing layer of glue which during the first use of the diaper is fastened on the front waistband. The joint can thereafter be opened and closed by the hook and loop tapes being pulled apart and pressed to- gether again. A motive for the invention is the task of providing an absorbent garment of the type mentioned in the introduction, especially for single use, which is cheaper than known such garments. It should, however, still be possible to comfortably adapt the garment to the shape of the body of the user by the selection of different connecting positions between the absorption unit and the belt. Summary of the invention According to the invention this task is fulfilled through the garment having the characteristics mentioned in the accompanying claim 1. As the belt material itself does not need to interact with the first hook and loop material, which appropriately is a hook material, it can be made of a cheap and pliable material, e.g. a thin nonwoven textile material, nonwoven, a plastic film coated or laminated with an outer material which is kind to the skin, or even a purely plas- tic film. The exposed glue layer on the fastening means can be fastened in arbitrarily desired places on the belt the first time the garment is used, whereby an optimal fitting of the garment to the user is achieved. The absorption unit can thereafter be detached and refastened to the belt through the hook and loop joints being opened and then pushed together again. If the two pieces of complementary hook and loop material then are again positioned directly in front of each other, the earlier made fitting of the garment is again achieved but a certain adjustment is also possible. An advantageous design for packing without projecting tapes or ends of bands is obtained by the protective layer being fastened to the inner casing layer on the end part of the front short side. The fastening means in the unused condition then is fastened to the front short side and can be removed and folded out when the short side is to be fastened to the belt for the first time. As the protective layer is attached to the absorption unit, the user does not have to take care of loose protective layer pieces when the garment is to be put on. Further advantages and characteristics of the invention are evident from the independent claims and from the following description of embodiments with reference to the accompanying figures. Figures The figures show: in Figure 1, a preferred embodiment of an absorbent garment according to the invention in the shape of an incontinence diaper, seen from the side facing towards the user during the use and partially cut away, in Figure 2, a section through a part of a diaper with fastening means attached thereto, seen from the line II-II in Figure 1 and with the fastening means in the unused state, and in Figures 3, 4 and 5, sections similar to Figure 2 with the fastening means in different states of use. Detailed description of the embodiments Figure 1 shows an absorbent garment according to the invention in the shape of an incontinence diaper, which consists of an absorption unit 2, also called chassis, and a separate belt 4 intended to releasably support the absorption unit 2. The belt 4 is made of a band of ihin nonwoven textile material, nonwoven, and has at its ends tapes 6,8 of complementary hook and loop material for fastening together the belt around the waist of a user. For example, the tape 6 can be formed of so-called hook material and be fixed to the side 7 of the belt 4 facing away from user during the use, while the tape 8 projecting in the longitudinal direction of the belt is made of so-called loop material and is fixed to the side 9 of the belt facing towards the user. The absorption unit 2 has two long sides 10,12 and two short sides 14,16. The short side 14 is intended during use to be bent towards the rear of the user and the short side 16 bent forwards. The absorption unit 2 is built up of a central body of absorp- tion material 18, which is contained between an inner casing layer 20 of liquid- permeable material, e.g. nonwoven, and an outer casing layer 22 of liquid-tight material, e.g. plastic film. The rear short side is provided with two tapes 24 of a hook and loop hook material, spaced apart a distance and rigidly attached to the outer casing layer 22. The belt 4 is provided on its side facing toward the user with two tapes 26 of a hook and loop hook material arranged spaced apart essentially the same distance. When the belt 4 is brought around the waist of the user, the hook material tape 6 at one end of the belt is fastened to the loop material tape 8 at the other end of the belt. The tape 8 has such a length that adaptation to the waist size of the user is permitted. The absorption unit 2 is fastened by the belt 4 through the hook material tapes 24 on its rear short side 14 being pressed against the loop material tapes 26 on the belt. This can be performed either before or after the belt has been fastened around the waist. When the belt 4 is fastened around the waist of the user and the absorption unit 2 is fastened to the belt and hangs down behind the user, the front short side 16 of the absorption unit is moved between the user's legs and up over the abdomen to be fastened to the belt 4. The fastening takes place with the help of two fastening means 28 which are each firmly joined with one end of the short side 16 and which is described more closely below with the help of Figures 2-5. Figure 2 shows a section through the right end seen in Figure 1 of the front short side 16 of the absorption unit 2 and the thereupon attached fastening means 28, which comprises a number of layers of different materials. The refastenable fastening device of the fastening means 28 consists of two complementary tapes 30,32 of hook and loop material which grip each other, as shown in Figure 2. The first tape 30, which can be made of loop material, is provided with a layer 34 of a powerful adhesive on its side facing away from the hook and loop means. The adhesive layer lies in contact with a plastic tape 36 which is fixed, e.g. glued, on the inner casing layer 20 of the absorption unit 2 next to the end edge 38 of the front short side 16. The surface of the plastic tape 36 which is facing towards the tape 30 of loop material is smooth or treated with release means and forms a so-called release surface so that the adhesive layer 34 can easily be removed therefrom. One end 40 of a plastic tape 42 is fastened to the second hook and loop tape 32 on the side facing away from the hook and loop means, shown in the example as hook means. The plastic tape 42 extends around the end edge 38 of the short side 16 and has its other end 44 fastened onto the outer casing layer 22 on the outside of the short side 16. The end 46 of the loop material tape 30 facing away from the end edge 38 extends further from the end edge 38 than the adhesive layer 34 and forms a gripping tab. The second hook and loop tape 32 has essentially the same size as the first tape 30 and its end 48 lying directly in front of the end 46 of the tape 30 lacks hook and loop means, shown in the example as hooks, whereby the end forms a gripping tab. Figure 2 shows the fastening means 28 in the state it has when it is still unused. When the belt 4 of the absorbent garment is fastened around the waist of the user and the absorption unit 2 is drawn up over the stomach of the user, the front short side 16 is fastened to the outside 7 of the belt 4. One then grips with the fingers one or both of the gripping tabs 46,48 and draws the fastening means 28 upwards from the inner casing layer 20 of the short side 16. The adhesive layer 34 then comes off the plastic tape 36. With the plastic tape 42 as a hinge the two hook and loop tapes 30,32 with appended adhesive layer 34 can be folded out to a position where they form a continuation of the short side 16. This position is shown in Figure 3, which also shows a part of the belt 4. With the fingers still gripping around one or both of the tabs 46,48, the adhesive layer 34 on the fastening means 28 is pressed against the outside 7 of the belt 4. A good connection between the adhesive layer 34 and the outside 7 of the belt 4 is obtained by pressing the outer end 40 of the plastic tape 42, whereby the belt 4 is supported by the user's abdomen or side. The fastening means 28 now takes up the state shown in Figure 4. The hook and loop tape 30 now is fixed onto the belt 4 and forms a receiving zone, a so-called target, intended for cooperation with the complementary hook and loop tape 32. If for some reason one wishes to remove the absorption unit 2 from the belt 4, one grips the gripping tab 48 on the hook and loop tape 32 and draws it away from the hook and loop tape 30, see Figure 5. It is important that the strength of the adhesive joint between the adhesive layer 34 and the outside 7 of the belt 4 and the hook and loop tape 30, respectively, is so adapted in relation to the strength of the hook and loop joint 30/32 that the hook and loop joint opens before the adhesive layer comes off from the belt or hook and loop tape 30. When the absorption unit 2 is released from the belt 4 according to Figure 5, it is easy to refasten it to the belt by pressing together the two hook and loop tapes 30 and 32. The invention is not limited to the embodiment described above and shown in the drawing. For example, the hook and loop tape 30 can alternatively be of hook mate- rial and the tape 32 of loop material. The fastening means 24/26 between the belt 4 and the absorption unit 2 can alternatively be an adhesive joint, or the belt 4 can be permanently connected to the absorption unit 2, e.g. by welding by the rear short side 14.

Claims: Claims 1. Absorbent garment, especially incontinence protector, comprising partly an absorption unit (2), which has a first liquid-permeable casing layer (20), a second, liquid-tight casing layer (22), and an absorption body (18) situated between the casing layers, wherein the absorption unit (2) has a front and a rear short side (16,14); partly a waist belt (4) for fastening around the waist of the user, which is joined or connectable with the rear short side (14) of the absorption unit (2); in addition to which the front short side (16) has two end parts, each situated at one end of the short side, which by means of their own hook and loop fastening means (28) are releasably connectable with the waist belt (4) in a plurality of positions in relation thereto; characterized in that each fastening means (28) has a piece (32) of a first hook and loop material non-releasably joined with one of the casing layer (22) within the respective end parts, and a therewith cooperating piece (30) of second, complementary hook and loop material, which on its side facing away from the hook and loop means is provided with an adhesive layer (34), which in a unused state of the fastening means (28) is covered by a protective layer (36); and that the surface of the waist belt (4) intended for cooperation with the fastening means (28) is formed of a material which lacks the ability to cooperate, by means of gripping, with the first hook and loop material (32) to a sufficient degree when the garment is used. 2. Garment according to Claim 1, characterized in that the protective layer (36) is fixed to the inner casing layer (20) by the end part of the front short side (16). 3. Garment according to Claim 1 or 2, characterized in that the first hook and loop material (32) is a hook material and that the second hook and loop material (30) is a loop material. 4. Garment according to any of Claims 1-3, characterized in that the waist belt (4) is unreleasably connected with the absorption unit (2) at its rear short side (14). 5. Garment according to any of Claims 1-3, characterized in that the absorption unit (2) is releasably connectable (24/26) with the waist belt (4). 6. Garment according to Claim 5, characterized in that the absorption unit (2) is releasably connectable with the waist belt (4) by means of hook and loop fastening means (24, 26).

Inventors: KARLSSON KATHARINA, KARLSSON, KATHARINA
Applicants: KARLSSON KATHARINA, MOELNLYCKE AB, KARLSSON, KATHARINA, SCA MOELNLYCKE AB
Application year: 1997
Main classification: A61F13
IPC codes: A61F13