WO2008017296A1 - Antiperspirant insert - Google Patents

Abstract

The invention relates to an antiperspirant insert with a top layer (1) that is permeable to liquids, a bottom layer (2) that is impermeable to liquids, and a core layer (3) arranged between the top layer (1) and the bottom layer (2), wherein the core layer (3) is divided into a plurality of segments (3a, 3b) lying alongside one another and separated by gaps (6), and the top layer (1) and the bottom layer (2) are firmly connected to each other in the gaps (6) and in an edge zone (7) surrounding the core layer (3). It is possible to produce an antiperspirant insert of this kind by means of the top layer (1) containing an antiperspirant, said antiperspirant being ZnO and/or AlCl<SUB>3</SUB> - 6H<SUB>2</SUB>O.

Description

 Antitranspirationseinlage

The invention relates to an antiperspirant insert of the type specified in the preamble of claim 1.

Antiperspirant liners are known in numerous embodiments. They serve in particular the sweat absorption, z. B. in the armpit area, and are therefore often referred to as sleeves or welding sheets.

Known Antitranspirationseinlagen the type described (eg DE 696 17 960 T2 with numerous other references to the prior art) usually contain a certain for attachment to the human skin, for liquids (perspiration) permeable upper layer, one for conditioning and / or attachment to a garment, a liquid impermeable backsheet, and a core layer of a liquid absorbent material disposed between the topsheet and the backsheet. The upper class can be z. B. consist of a nonwoven fabric or a film provided with through holes. The backsheet is most often formed as a liquid impermeable but breathable, ie, water vapor and air permeable, layer which may be made of one or more layers. Finally, the core layer z. B. from a fibrous, absorbent material, optionally enriched with Hydrogelparti- kel materials, eg. B. from cellulose or polymer fibers, from a nonwoven or a cotton wool or from any absorbent fabric.

There are numerous. Proposals for the geometric shape of antiperspirant inserts and for their attachment to garments or the like (eg DE 26 17 545 A1, DE 28 41 365 A1, DE 31 04 047 A1, DE 39 09 218 A1, EP 0 179 650 A2, US 467 898, US 5 103 500).

Other known proposals relate to the application of antiperspirant inserts directly on the skin (eg PCT WO 03/082143 A2). In order to avoid that resulting in the bending areas tensile stresses are transmitted to the skin, on the one hand, the self-adhesive film intended for sticking to the skin is interrupted in the bending areas, on the other hand, the here einschichtige Antitranspirationseinlage provided with serrations formed by bending lines.

Finally, it is also known antiperspirant deposits with various additives z. B. fragrances or agents for killing or growth inhibition of bacteria od. Like. To provide (eg, DE 33 39 474 Al).

Despite this extensive state of the art and the existing need for antiperspirant liners, especially in individuals suffering from excessive and pathological sweating (hyperhidrosis), no antiperspirant liners have yet been offered on the market which fully satisfy consumer needs. On the one hand, this is due to insufficient absorption capacity of the known anti-perspiration inserts. On the other hand, the wearing comfort of known anti-perspiration insoles is usually inadequate, since predetermined notch lines or the like in the usual multi-layer construction can also contribute little to the improvement of flexibility and suppleness.

Based on this, the present invention is based on the technical problem the Antitranspirationseinlage the type described above form so that it offers improved comfort and has a high absorption and absorption capacity.

To solve this problem serve the characterizing features of claims 1 and 2.

Further advantageous features of the invention will become apparent from the dependent claims.

The invention will be explained in more detail below in connection with the accompanying drawings of exemplary embodiments. Show it:

Figure 1 is a schematic, perspective view of a conventional, suitable for producing a Antitranspirationseinlage multi-layer body.

FIG. 2 shows a plan view of an antiperspirant insert according to the invention; FIG.

Figure 3 is a schematic, compared with Figure 2 enlarged section along the line III - III of Fig. 2. and

Fig. 4 is a plan view of a second embodiment of an antiperspirant insert according to the invention.

Fig. 1 shows the usual structure of an antiperspirant insert. This contains an upper layer 1 intended for liquids, in particular sweat-permeable, for contact with the skin, a liquid-impermeable lower layer 2 for attachment to a garment and the like, and a liquid-absorbent core layer arranged between the two layers 1 and 2 3. The function of such Antitranspirationseinlage should consist in that the secreted liquid, in particular sweat, the upper layer 1 penetrates and of the

Core layer 3 is absorbed or stored in this, while the lower layer 2 prevents penetration of the absorbed sweat on a worn garment and thus prevents its contamination or the formation of visible sweat stains.

On the side facing away from the core layer 3 side of the lower layer 2 is a self-adhesive layer 4 in the form of an adhesive strip od. Like. Applied, which serves the purpose of securing the Antitranspirationseinlage the respective garment. This adhesive layer 4 is useful with a protective film 5 od. Like. Covered, the z. B. consists of a silicone paper and a drying or fouling of the adhesive layer protects against the use of Antitranspirationseinlage. The protective layer 5 is expediently readily removable and provided with a protruding, suitable for detecting approach 5a.

The described layers 1 to 5 form superimposed layers of a multi-layer body and have a thickness chosen according to their function. Incidentally, the antiperspirant sheet produced with the aid of the described multilayer body is designed as a disposable article intended for single use only.

According to the invention, the core layer 3, as shown in FIGS. 2 and 3, divided into a plurality of adjacent segments 3a, 3b, which are separated by gaps 6 from each other. In the region of these intermediate spaces 6 and in a peripheral zone 7 surrounding the core layer 3 (FIG. 3), the upper layer 1 and the lower layer 2 are firmly joined together so that narrow, inner strips 8 and a narrow, all-round outer strip 9 are formed in which no core layer material is arranged. The bonding of the upper layer 1 to the lower layer 2 in these strips 8, 9 takes place for example by gluing or welding by application of pressure and heat.

The thickness d of the antiperspirant insert and of the individual layers is shown exaggerated in FIG. 3 for a better understanding of the invention. In fact, the total thickness is z. B. 1 mm to 4 mm, the main component on the Thickness of the core layer 3 is eliminated. In contrast, the layers 1 and 2 have thicknesses that are well below one millimeter, while the thicknesses of the applied by spraying od. Like. Adhesive layer and the protective film 5 are preferably in the micrometer range.

Due to the formation according to the invention of the segments 3 a, 3 b, individual chambers 1 and 2 are formed between the layers 1 and 2, indicated by the reference numerals 10 a to 10 d, which are separated from each other by the strips 8 and sealed off to the outside by the strip 9 , As a result, on the one hand, an overall very flexible, adaptable antiperspirant insert is obtained, which is the respective body parts to be protected, for. As an armpit, hugs and any size variations of the user (inside) can compensate optimally. This also applies if comparatively rigid materials are used for the core layer 3. On the other hand, the chambers 10a to 10d filled with the suction layer segments 3a, 3b ensure that liquids stored in them can not escape to the outside. By selecting the number and / or the arrangement of the chambers 10a to 10d, these properties can be further optimized, wherein the best configuration in each case can also be found by experiments.

The topsheet 1 and backsheet 2 are preferably made of materials known per se for this purpose. In particular, the upper layer 1 z. B. from a liquid for liquids (perspiration) permeable, but these liquids not or little absorbent material. Particularly suitable are various nonwovens, especially those made of cellulose, as z. As well as panty liners, bandages od. Like. Be used. Alternatively, a provided with perforations, the skin-friendly foil could be provided. The purpose of the upper layer 1 is to act as a transfer layer and to transport the sweat or the like rapidly away from the skin surface and towards the core layer 3.

In a preferred embodiment of the invention, the top layer 1 additionally contains an antiperspirant, preferably zinc oxide (ZnO) and / or Aluminum trichloride hexahydrate (AlCl ₃ - OH ₂ O). As a result, the upper layer 1 can contribute to curbing "sweating." In addition, the upper layer 1 may alternatively or additionally comprise an odor-inhibiting, antibacterial and / or fungicidal agent such as, for example, silver ions (Ag ⁺ ) and / or usnic acid (C ₁₈ H ₁₆ O ₇ ), which promotes bacterial or fungal killing while at the same time reducing odor, for example, triethyl lead (citric acid ester) is also suitable for this purpose.

In a particularly preferred embodiment, the upper skin layer 1 coming into direct skin contact additionally or alternatively contains a skin soothing agent, such as, for example, Sage.

The said agents are preferably used in combination to increase their effectiveness. The following weight ratios have been found to be particularly preferred:

ZnO: AlCl ₃ - OH ₂ O = 5: 1 to 1: 5

ZnO: Ag ⁺ = 5: 1 to 1: 5

ZnO: usnic acid = 5: 1 to 1: 5 AlCl ₃ - OH ₂ O: Ag ⁺ = 5: 1 to 1: 5

AlCl ₃ - OH ₂ O: usnic acid = 5: 1 to 1: 5

ZnO: AlCl ₃ - OH ₂ O: Ag ⁺ = 5: 5: 1 to 1: 1: 5

ZnO: AlCl ₃ - OH ₂ O: usnic acid = 5: 5: 1 to 1: 1: 5

Ag ⁺ : usnic acid = 5: 1 to 1: 5 ZnO: sage = 5: 1 to 1: 5

AlCl ₃ - OH ₂ O: sage = 5: 1 to 1: 5

ZnO: AlCl ₃ - OH ₂ O: Ag ⁺ : usnic acid: sage = 5: 5: 5: 1: 1 to

1: 1: 1: 5:. 5

The lower layer 2 contains in a preferred embodiment of the invention, although for liquids, especially sweat impermeable, but for air permeable and therefore breathable material. Suitable for this purpose are z. B. made of polyethylene (PE) or propylene (PP) films. The purpose of this measure is to allow breathing of the occupied with the Antitranspirationseinlage skin.

The core layer 3 or each segment 3a, 3b formed from the core layer material contains as base material an absorbent nonwoven fabric consisting of cellulose or the like. So that the core layer 3 has a high storage capacity even with a comparatively small thickness, according to the invention an additional storage means for the liquid, in particular sweat, on the other hand a liquid-attracting, hygroscopic constituent is added, in particular on the side facing the top layer 1 is arranged. A superabsorbent, gelling polymer (SAP) which can absorb a liquid or moisture quantity which is greater than the intrinsic weight of the polymer is used with particular advantage as the storage medium. Such polymers may be gelled under z. B. take up to 300 times their own weight of liquid and store. Examples of such a superabsorbent polymer are, in particular, copolymers of acrylic acid (C ₃ H ₄ O ₂ ) and sodium acrylate (NaC ₃ H ₃ O ₂ ), which are present as fine spheres or fibers in powder form. As a hygroscopic ingredient, however, especially different desiccant such. As boron trioxide (B ₂ O ₃ ), alumina (Al ₂ O ₃ ) and / or calcium chloride (CaCl ₂ ). The addition of the preferably strongly hygroscopic component ensures that, on the one hand, the moisture is absorbed from the air and, on the other hand, sweat secretions are rapidly drawn through the upper layer 1 into the interior of the core layer 3 and stored there, ie not on the skin surface and / or the upper layer 1 adhere.

Bei Anwendung dieser und anderer Zusammensetzungen der Kernschicht 3 haben sich mit den erfindungsgemäßen Antitranspirationseinlagen hervorragende Ergebnisse erzielen lassen. Das gilt nicht nur im Hinblick auf den durch das Mehrkammersystem erhaltenen Tragekomfort, der sich in einer guten Anpassung der _.Antitranspirationsein- läge an die Achselhöhlen od. dgl. zeigt, sondern auch im Hinblick auf das Saug- und Speichervermögen insgesamt, das trotz eines mit z. B. 2 mm vergleichsweise dünnen Schichtenkörpers unerwünschte Schweißabsonderungen auf der Kleidung od. dgl. vermeidet und dennoch ein Trockenheitsgefühl vermittelt und dadurch zum Wohlbefinden der Träger(innen) beiträgt.In a particularly preferred embodiment of the invention, the core layer 3 also contains substances such. As activated charcoal or cyclodextrin derivatives, in particular (MCT- / 3-) CD, which can absorb odors and thereby at least attenuate odors associated with perspiration. It has proven particularly advantageous if the core layer 3 contains the various components with the following weight ratios:

When using these and other compositions of the core layer 3, excellent results can be achieved with the antiperspirant inserts according to the invention. This is true not only in terms of the comfort of the multi - chamber system, which results in a good adaptation of the _. Antitranspirationsein- to the armpits od. Like. Shows, but also with regard to the suction and storage capacity overall, despite a z. B. 2 mm comparatively thin layer body od undesirable sweat on the clothing od. Like. Avoids and yet conveys a feeling of dryness and thereby contributes to the well-being of the wearer (inside).

The various materials added to the base material of the core layer 3 (SAP, hygroscopic component, odorant absorbing substance) are usually in powder form or also as fine fibers or globules. These constituents are preferably uniformly mixed and uniformly distributed in the nonwoven fabric or the like, so that the core layer 3 or the individual segments 3a, 3b each form a coherent layer and even then a good moisture distribution is obtained in the core layer 3 when the perspiration separates uneven occurs, which should correspond to the rule.

A preferred form for the antiperspirant insert according to the invention results from FIG. 2, according to which the antiperspirant insert in the plan view essentially has a rectangular shape with short and long rectangle sides 11, 12, the short sides 11 having an arcuate course. This allows a good adaptation, in particular to the armpit area. The parallel to the long sides 12 measured length of Antitranspirationseinlage is z. B. 10 cm to 16 cm, the width measured parallel to the short sides 11 z. B. 7 cm to 11 cm, depending on the different body sizes expedient Antitranspirationseinlagen be offered with correspondingly different dimensions.

The total weight of the antiperspirant insert according to the invention is preferably not more than about 6 g, preferably 1 g to 5 g, wherein the main part of the weight is attributable to the core layer 3. By contrast, the total thickness of the anti-perspiration pad should be no more than 5 mm, preferably between 0.5 mm and 4 mm, to ensure a high wearing comfort.

Alternatively, however, other forms are possible. This results z. B. from Fig. 4, according to which the Antitranspirationseinlage is provided on both sides with laterally attached, preferably parallel to the long sides of the rectangle 12 extended wings 14. With particular advantage, the wings 14 are provided with segments 14a, 15b of the core layer material, so that in the wings 14 of the same layer structure as in the other areas of Antitranspirationseinlage results and form the segments 15a, 15b outwardly closed chambers here, too prevents leakage of liquid. The wings 14 have z. B. a length of about 8 mm and a width of about 2.5 mm.

The application of the antiperspirant insert according to the invention is not limited to the underarm area. Rather, it can be applied, if necessary, with a suitably adapted geometric shape, as a liner for workers' waistcoats, as a back cover, as a shoe insert or otherwise. A preferred further application is z. B. is to train them as a sweatband and use in a protective helmet for motorcyclists or motorists. An advantage over conventional, permanently associated with the helmets foam inserts then results from the fact that the Antitranspirationseinlage invention can be easily replaced at any time.

The invention is not limited to the described embodiments, which can be modified in many ways. For example, it is possible, or even only the upper layer 1 with an odor-absorbing substance such as (MCT - /? -) CD and instead of sage with other non-irritating substances such as skin. B. lavender, rose scent, summer freshness od. Like. To provide. Also known per se inclusion of substances z. B. in the core layer 3 in the form of beads od. Like., Which give fragrant scents under the influence of pressure and / or heat, is conceivable. Of course, perfuming substances can also be applied in the form of additional scent strips. Furthermore, the antiperspirant inserts can be offered in a total of different colors in order to make them largely invisible when worn. Furthermore, it is clear that the dimensions and weights given are only preferred examples. Furthermore, z. B. the layers 4 and 5 are replaced by a Velcro layer, in particular a layer which is provided with Velcro hooks. The number of chambers per antiperspirant insert is also largely variable and depends in particular on the desired flexibility and conformability of the finished product. It is clear that the strips 8 and 9 (Fig. 2) should each be kept as narrow as possible so that they only slightly reduce the usable space for the segments 3a, 3b space. Finally, it is understood that the various features may be applied in combinations other than those described and illustrated.

Claims

Claims: An antiperspirant insert having a liquid-permeable upper layer (1), a liquid-impermeable lower layer (2) and a core layer (3) arranged between the upper layer (1) and the lower layer (2), the core layer (3) being in a plurality is subdivided by adjacent segments (3a, 3b) separated by intermediate spaces (6), and the upper layer (1) and the lower layer (2) are fixed in the intermediate spaces (6) and in an edge zone (7) surrounding the core layer (3) interconnected, characterized in that the upper layer (1) contains an antiperspirant, wherein the Antiperspirant ZnO and / or AICI ₃ - 6H ₂ O is. 2. Antitranspirationseinlage according to claim 1, characterized in that the core layer (3) contains a storage means for liquids and a liquid-attracting, hygroscopic component. 3. Antitranspirationseinlage according to any one of the preceding claims, characterized in that the core layer (3) and / or the upper layer (1) contains an odor-absorbing agent. 4. Antitranspirationseinlage according to any one of the preceding claims, characterized in that the core layer (3) contains a superabsorbent polymer. 5. Antitranspirationseinlage according to claim 4, characterized in that the core layer (3) contains a nonwoven fabric as a base material. 6. Antitranspirationseinlage according to any one of the preceding claims, characterized in that the storage means is in powder, spherical or fibrous form and evenly distributed in the core layer (3) is included. 7. Antitranspirationseinlage according to any one of the preceding claims, characterized in that the core layer (3) contains an acrylic acid copolymer as a storage means. 8. Antitranspirationseinlage according to any one of the preceding claims, characterized in that the core layer (3) B ₂ O ₃ and / or Al ₂ O ₃ and / or CaCl _{2 contains} as a hygroscopic component. 9. Antitranspirationseinlage according to claim 8, characterized in that the hygroscopic ingredient is present in powder form and evenly distributed in the core layer (3), in particular on its the topsheet (1) facing side. 10. Antitranspirationseinlage according to any one of the preceding claims, characterized in that the core layer (3) and / or the upper layer (1) contains activated carbon and / or a cyclodextrin derivative, in particular (MCT-ß-) CD as the odor-absorbing agent. 11.Antitranspirationseinlage according to claim 10, characterized in that the odor-absorbing agent is present in powder form and evenly distributed in the core layer (3) is included. 12. Antitranspirationseinlage according to any one of the preceding claims, characterized in that the upper layer (1) consists of a liquid-permeable, but not or little absorbing liquids material. 13. Antitranspirationseinlage according to claim 12, characterized in that the upper layer (1) consists of a nonwoven fabric or a perforated film. 14. Antitranspirationseinlage according to any one of the preceding claims, characterized in that the upper layer (1) contains an odor-inhibiting agent. 15. Antitranspirationseinlage according to claim 14, characterized in that the odor-inhibiting agent contains silver ions and / or usnic acid and / or triethyl citrate. 16. Antitranspirationseinlage according to any one of the preceding claims, characterized in that the upper layer (1) contains a skin calming agent. 17.Antitranspirationseinlage according to claim 16, characterized in that the skin soothing agent contains sage. 18. Antitranspirationseinlage according to any one of the preceding claims, characterized in that the lower layer (2) consists of an air-permeable, for liquids, however, substantially impermeable material. 19. Antitranspirationseinlage according to any one of the preceding claims, characterized in that the lower layer (2) on one of the core layer (3) facing away from side with an adhesive layer (4) and this covering, peelable protective layer (5) is provided. 20. Antitranspirationseinlage according to any one of the preceding claims, characterized in that its thickness is at most 5 mm. 21. Antitranspirationseinlage according to any one of the preceding claims, characterized in that their mass is 1 g to 6 g. 22 Antitranspirationseinlage according to any one of the preceding claims, characterized in that it has a rectangular basic shape with short and long sides of the rectangle (11,12) in the plan view, wherein the short rectangular sides (11) have an arcuate course. 23.Antitranspirationseinlage according to claim 22, characterized in that on each long side of the rectangle (12) an outwardly projecting wing (14) is provided.