KR100321528B1 - Breathable perspiration pads having odour control - Google Patents

Abstract

The present invention relates to breathable sweat pads with breathable backsheets and odor control systems, such as underarms, wrist and head sweat pads, collar inserts and shoe inserts. The combination of breathable and malodor control system results in improved malodor control performance of the sweat pad.

Description

Breathable sweat pads with odor inhibitors {BREATHABLE PERSPIRATION PADS HAVING ODOUR CONTROL}

The sweat glands of the body are well known body actions, mainly due to climate change and physical exercise. In this way the body provides a natural cooling system. The degree of sweat secretion varies from person to person, but under certain circumstances, the body always produces sweat. Although sweat secretion is a natural action of the body, it often results in a decrease in the hygiene and cleanliness of the body. In addition, most people are offended by sweating.

In addition, sweat typically stains clothing, causing visual discomfort. This problem is exacerbated by some designs of garments such as tight clothing and synthetic materials used in the manufacture of garments. Unfortunately, clothing stains associated with sweat are difficult to remove and often remain visible in the garment after washing or dry cleaning.

In addition, another problem associated with sweat production is that it is accompanied by an unpleasant odor. Odor generating compounds are typically present in or derived from a number of sources. First, sweat, which is a real component of fluid secretions, may contain malodor generating compounds. Second, malodor generating compounds can also be produced as a result of degradation of sweat components.

Many people, especially those with hyperhidrosis, are quite embarrassed when sweat glands occur, especially when sweat is perceived by others. Therefore, it is highly desirable not to recognize the sweat of the human body.

One means to solve this problem is to use a sweat inhibitor or deodorant applied to the skin in the form of an aerosol, roll-on, stick or gel. For example, European Patent No. 710 812 discloses a method for the prevention of armpit odor associated with human sweat using macroporous crosslinked copolymers containing acrylate or methacrylate units. The polymer freezes the fatty acid component of the sweat, preventing skin bacteria from accessing the acid, which in turn prevents body odor.

However, sweat inhibitors and deodorants are not very effective for many people. In addition, many consumers want to avoid using the compound on the skin because most of the compound is thought to be a skin irritant and is not considered to inhibit the body's natural response to sweat secretion. In addition, the product does not solve the problem of staining of clothing. In fact, many sweat control products stain and disintegrate clothing.

Another means of solving the problems caused by sweat secretion is to use absorbent products. Such products have long been recognized as a means to solve the above problems, and there is a lot of literature on products which are specifically designed to absorb sweat, especially those designed for use in sweaty areas of the body such as armpits, necks or soles. For example, sweat pads are disclosed in US Patent Application No. 467,898, German Patent No. 31 04 047, German Patent No. 28 41 365 and German Patent No. 39 09 218.

The main focus of the sweat pad is to absorb and retain the fluid. This is typically done by providing a pad having an absorbent material and a liquid impermeable backing material. In this way, the pads provide comfort to the wearer by absorbing the secreted fluid, preventing the garment from staining, and keeping the sweaty skin surface dry well. In addition, another important area to be developed in this field is to inhibit the malodor generating compounds contained in the pads while using the sweat pads.

There is a great deal of literature in the field, particularly in the field of sanitary napkins, which disclose various malodor inhibiting compounds used in absorbent articles. These malodor inhibitors typically act by physically absorbing malodor generating compounds, or by chemically interacting with malodor generating compounds or their precursors, or by masking malodors using perfumes or the like.

It has been known in the art to use odor inhibitors, especially in sweat pads. EP-333 773, for example, discloses a sweat inhibiting pad having an absorbent layer containing microencapsulated active ingredient and a thin water-impermeable layer having an attachment means for attaching to the garment.

In addition, German Patent No. 33 39 474 has a garment attachment means which is easily removed from the garment, and a sweat inhibiting armpit pad comprising an absorbent material and a flavor carrier or an active ingredient which kills bacteria and microorganisms and is preferably encapsulated. To start.

German Patent No. 26 17 545 discloses an underarm sweat pad comprising a cover layer and a bottom layer with garment attachment means. In addition, the pad may contain an antibacterial agent or a perfume.

However, the malodor inhibitors disclosed above all have disadvantages. Many odor inhibitors do not effectively suppress a wide range of odors and are not effective for sweat odors.

Disposable garment shields for preventing garment stains and removing odors from sweat are disclosed in US Pat. No. 5,103,500. The shield includes a laminate having an adhesive adhesion material, a moisture absorbing layer, and an anhydrous deodorizing mixture activated by sweat and having a nonabsorbent polymer layer.

However, there is still a need for other malodor inhibitors or systems for effective use in sweat pads. In particular, there is a need for malodor inhibitors or systems that treat malodor-producing sources so that malodor generating compounds in the pads are not recognized.

Recently, the use of a malodor inhibitor in combination with a sweat pad having a breathable backsheet has been found to unexpectedly improve the malodor suppression performance of the malodor suppression system.

The use of breathable backsheets in absorbent articles, such as sanitary napkins, to increase wearer comfort is known in the art and is disclosed, for example, in British Patent 2,184,389, US Patent 3,881,489 and European Patent 203,821. have. U.S. Patent No. 4,059,114 discloses incorporation of fungicides in sanitary napkins having a vapor permeable backsheet. However, none of these prior documents recognized the advantages of using a breathable backsheet and an odor suppression system together in a sweat pad.

The synergistic effect of the odor inhibitory ability of the breathable sweat pads used with odor inhibitors is believed to be due to several factors.

First, the breathability of the pad enhances the transport of volatile, malodorous compounds. Thus, the actual amount of physical contact between these compounds and odor inhibitors is increased. In order to effectively suppress the malodor generating compound, it is generally required that the malodor inhibitor and the malodor generating compound are contacted. Often, a large amount of malodor suppression system is required in the sweat pad to ensure effectiveness. This is because malodor inhibitors do not necessarily contact all malodor generating compounds. It is desirable that a large amount of malodor suppression system be not required as it increases the cost of the product. In the present invention, the effect of the malodor inhibitor is greatly increased so that the dose of the malodor inhibitor can be completely used, and thus the required amount can be smaller.

Second, the breathability of the absorbent pad reduces the high temperature, high humidity anaerobic environment between the wearer skin and the sweat pad surface. This suppresses the growth of microorganisms known to produce malodor generating compounds. Thus, the sweat pad of the present invention reduces the presence of microorganisms and the degree of odor.

Third, the high temperature, high humidity, and closed environment between the wearer's skin and the wearer's opposing surface of the sweat pad is reduced, thereby reducing the sweat tendency of the product wearer. As a result, the odor associated with sweating will be diminished. Therefore, the breathability of the pad actually weakens the degree of odor generated in the sweat pad. As a result, the malodor suppression system works more effectively against malodor generating compounds remaining in the product.

In addition, since the pad has breathable characteristics, the malodor generating compound contained in the pad can be exchanged with the surrounding environment as well as water vapor and air. Thus, malodor generating compounds can escape from the product and dissipate to the surrounding environment. More importantly, due to the breathability of the pad, the precursor compound of the malodor generating compound present in the product may begin to decompose and escape from the sweat pad before the malodor is formed.

Another advantage of the sweat pad of the present invention is that it does not need to use a sweat suppressing product, so that the sweat secretion of the body can be naturally performed without causing stains on clothes or odors being recognized.

Summary of the Invention

The present invention relates to an absorbent sweat pad comprising an absorbent core further comprising an odor suppression system and a breathable backsheet. The combination of the malodor suppression system and breathability in the sweat pad unexpectedly improves the malodor suppression system performance, thereby preventing the recognition of malodors and staining of clothing.

The present invention relates to sweat absorbing articles having improved malodor suppression systems, such as armpit sweat pads, collar inserts, shoe inserts and the like. The present invention suppresses sweat secretion and accompanying odors and at the same time effectively absorbs the generated sweat so that it is not perceived visually or olfactory.

The present invention relates to a breathable sweat pad that can be used with a garment or undergarment product or as a separate product placed on the body where the sweat is normal or excessive. Examples of sweat pads include sweat pads of armpits, wrists and heads; Collar inserts; Shoe inserts; Hat bands; And chest pads. Typically, such products include an absorbent core and a backsheet. According to the invention, the breathability of the sweat pad is provided by the breathable backsheet, as a result of which water vapor can be circulated through the pad, preferably both water vapor and air can be circulated. According to the invention the pad further comprises a malodor suppression system. It has recently been found that there is a synergistic effect between the breathability of the sweat pads and the malodor suppression system, unexpectedly improving the performance of the malodor suppression system.

Odor suppression system

According to the invention the pad comprises an odor suppression system as an essential component. The combination of a breathable pad and a malodor suppression system has been shown to unexpectedly increase the effectiveness of the malodor suppression system.

Any malodor inhibitor or mixtures thereof known in the art for this purpose can be used herein as a malodor suppression system. There is a great deal of literature in the art for various malodor inhibitors, used in absorbent articles to solve malodor formation problems, all of which may be useful in the present invention. Such inhibitors can typically be classified according to the type of malodor to be removed. Odors can be chemically classified as acidic, basic or neutral. Acidic odor inhibitors have a pH above 7 and typically include sodium carbonate, sodium bicarbonate, sodium phosphate, in particular zinc sulfate and copper sulfate. Basic odor inhibitors are less than pH 7 and include compounds such as carboxylic acids such as citric acid, lactic acid, boric acid, adipic acid and maleic acid.

The neutral malodor inhibitor has a pH of about 7. Examples of such compounds include activated carbon, clays, zeolites, silicas, absorbent gelling materials (AGMs) and starches. Neutral odor inhibitors and systems are described, for example, in EP 348,978, EP 510,619, WO 91/12029, WO 91/11977, WO 91/12030, WO 81/01643 and WO 96/06589. Is disclosed. Cyclodextrins and derivatives thereof can also be used as disclosed in US Pat. No. 5,429,628.

Alternatively, malodor suppression systems can be classified by mechanisms of action that result in less malodors or no malodors. The malodor inhibitor typically inhibits malodor recognition by absorption mechanisms.

Thus, odor suppression systems that chemically react with compounds that produce malodor generating compounds or malodor generating degradation products to eliminate odors or to produce compounds with odors that are acceptable to the consumer can also be used herein. Suitable inhibitors include chelating agents and include amino carboxylates such as ethylenediamine tetraacetate as disclosed in US Pat. No. 4,356,190; Amino phosphonates such as ethylenediaminetetrakis (methylene phosphonate); Aromatic chelating agents substituted with multifunctional groups as disclosed in US Pat. No. 3,812,044; And mixtures thereof. Without being bound by theory, the effect of the compound is due in part to its excellent ability to form chelates and remove iron, copper, calcium, magnesium and manganese ions present in the absorbed fluid and its decomposition products. I think.

Other malodor suppression systems suitable for use herein include buffer systems such as the buffer system of citric acid and sodium bicarbonate, the buffer system of sodium phosphate and sorbic acid. In addition, buffer systems of pH 7 to 10 as disclosed in WO 94/25077 may be used herein.

Other malodor suppression systems utilize ion exchange resins as disclosed in US Pat. No. 4,289,513 and US Pat. No. 3,340,875.

Masking agents such as perfumes or deodorants may also be used as odor inhibitors herein. Preferably these inhibitors are used in combination with further odor inhibitors such as zeolites as disclosed in WO 94/22500. In addition, sweat inhibitors such as aluminum salts such as aluminum chloride and aluminum sulfate and antibacterial agents such as triclosan, benzoic acid, propionic acid and sorbic acid can be used as odor inhibitors. Such inhibitors are described in W.H. Mueller and R.P. Quatrale, The Chemistry and Manufacture of Cosmetics, Vol. 3, 2, p205-208, "Antiperspirants and deodorants" and J. J. Leydon and K. D. McGinley et al., The Journal of Investigative Dermatology, Vol. 88, N. 3, March Suppl. 1987, "Skin Microflora".

Other suitable malodor inhibitors are described in R. Osberghaus, Cosm. and Toil. 95, 48, 1980, enzyme blocking agents as disclosed in Non Microbiological deodorising agents, such as triethyl citrate, and G. Proserpio, Cosmesi Funzionale, p465-498, ED. Singerga, 1988 odor absorbers such as zinc ricinoleate.

The malodor suppression system of the present invention is preferably selected from any of the aforementioned inhibitors or combinations thereof. Particular preference is given to antibacterial agents, deodorants, sweat inhibitors and mixtures thereof. Preferred malodor control systems comprising absorbents for use herein include the following combinations: i) Silica, AGM and zeolites, preferably 5: 1: 1 to 1: 1: 5, most preferably 3: 1 Silica, AGM and zeolite in a ratio of 1: 1 to 1: 3, ii) zeolite, activated carbon and AGM, iii) silica and AGM, preferably 5: 1 to 1: 5, more preferably 3: 1 to 1 Silica and AGM in a: 3 ratio, iv) zeolite and AGM, v) silica and zeolite, preferably in a ratio of 1: 5 to 5: 1, more preferably in a ratio of 1: 3 to 3: 1, vi) Chelating agents, in particular ethylenediaminetetraacetate, and vii) chelating agents mixed with a mixture of AGM and zeolite or chelating agents mixed with a mixture of AGM, zeolite and activated carbon (preferably the ratio of chelating agent to reagent added) To 10: 1, more preferably 1: 5 to 5: 1 to be).

Odor suppression systems can be incorporated into the product by any method disclosed in the art. For example, the malodor inhibitor may be laminated on the core of the absorbent material, mixed with the fibers of the absorbent core, or laminated on the backsheet. The malodor suppression system is preferably incorporated between two layers of cellulose tissue. Optionally, the malodor suppression system can be bonded between the two layers of cellulose tissue, for example using a hot melt adhesive or any suitable bonding system. Laminates suitable for the malodor suppression system of the present invention are available from Korma SpA under the codename K.O. (054.02.002). Alternatively, the malodor suppression system may be contained in a capsule or microcapsule that is activated by, for example, a change in temperature or pressure, or activated in contact with a liquid on the core, backsheet or core and backsheet.

Odor inhibitors may be incorporated into the pads as powders or granules. In the case of malodor suppression systems comprising one or more components, the inhibitors may be granulated separately and then mixed or granulated together.

The malodor inhibitor may be uniformly distributed over the pad or any one layer thereof, substantially at the pad center, or substantially at the pad edge.

According to the present invention, the amount of malodor suppression system incorporated into the pad can be readily determined by those skilled in the art, given the dimensions of the sweat pad, and somewhat dependent on the end use of the sweat pad. Typically, the pad comprises the malodor suppression system at a base weight of 5 to 400 g / m 2, more preferably 100 to 300 g / m 2 and most preferably 150 to 250 g / m 2. Armpit sweat pads, for example, comprise 0.25 to 5 g, preferably 0.4 to 3 g, most preferably 0.5 to 2.5 g of the malodor suppression system.

Back sheet

According to the invention, the sweat pad comprises a breathable backsheet as an essential component. The main role of the breathable backsheet is to prevent clothing such as jackets, shirts, blouses, dresses, pants, and undergarments from being absorbed by the pads so that they do not get wet with the secretions contained therein. To this end, the backsheet typically extends over the entire absorbent structure and can extend into side flaps, side wrapping elements or wings to form all or part thereof. However, through the breathable backsheet, both water vapor, preferably water vapor and air can move, so that air can be circulated in and out of the backsheet and the sweat pad.

Breathable backsheets suitable for use herein include all breathable backsheets known in the art. In principle, there are two types of breathable backsheets, namely, breathable and liquid impermeable single layer breathable backsheets and two or more layers combined to be breathable and liquid impermeable backsheets.

Single layer breathable backsheets suitable for use herein include, for example, British Patent Application No. 2184 389, British Patent Application No. 2184 390, British Patent Application No. 2184 391, US Patent No. 5 591 523, and US Patent No. 3 989 867, US Pat. No. 3,156,242 and European Patent Application 95120653.1.

Bilayer or multilayer breathable backsheets suitable for use herein include US Pat. No. 3,881,489, US Pat. No. 4,341,216, US Pat. No. 4,713,068, US Pat. No. 4,818,600, European Pat. No. 203,821, European Pat. No. 710,471, European Patent Nos. 710,472, European Patent Applications 95120647.3, 95120652.3, 95120653.1 and 96830097.0.

Particularly preferred is a backsheet which meets the requirements defined in European Patent Application No. 96830343.8, more preferably the sweat pad satisfies the requirements described above.

According to the invention, the breathable backsheet comprises at least one, preferably at least two water vapor permeable layers. Suitable water vapor transmission layers include two-dimensional planar micro and macroporous films, monolithic films, macroexpanded films and molded perforated films. According to the invention, the pores of the layer may be of any shape, but are preferably spherical or rectangular. In addition, the pores can be of various dimensions. In a preferred embodiment, the pores are preferably evenly distributed throughout the surface of the layer, although layers which are only perforated in specific areas of the surface are also contemplated.

As used herein, two-dimensional planar films have pores with an average diameter of 5 to 200 μm. Typically, two-dimensional planar microporous films suitable for use herein comprise pores having an average diameter of 150 to 5 μm, preferably 120 to 10 μm, most preferably 90 to 15 μm. Typical two-dimensional planar macroporous films have pores with an average diameter of 200 to 90 μm. Large expanded films and molded perforated films suitable for use herein have pores of 100 to 500 μm diameter. In embodiments according to the invention in which the backsheet comprises a large expanded film or a perforated molded film, the backsheet typically has an opening area of at least 5%, preferably 10% to 35% of the total backsheet surface area.

Suitable two-dimensional planar layers of the backsheet can be made of any material known in the art, but are preferably made of commercially available polymeric materials. Suitable materials are, for example, materials of the Gore-Tex (GORE-TEX) or Sympatex (type) which are well known in the art for use in breathable garments. Other suitable materials include XMP-1001 from Minnesota Mining and Manufacturing Company, St. Paul, Minn. As used herein, the term "two-dimensional planar layer" refers to a layer having a depth of less than 1 mm, preferably less than 0.5 mm, wherein the pores have a uniform average diameter along the length and do not protrude out of the plane of the layer. Refers to. Perforated materials for use as backsheets in the present invention can be prepared by using methods known in the art, such as those described in European Patent No. 293,482 and references herein. In addition, the dimension of the pores produced by this method can be increased by applying a force along the plane of the backsheet layer (ie, stretching the layer).

Suitable perforated molded films include films having discrete pores extending beyond the horizontal plane of the garment facing side of the layer toward the core to form protrusions. An orifice is located at the distal end of the protrusion. Preferably, the protrusion is a funnel shape similar to that described in US Pat. No. 3,929,135. The pores in the plane, and the orifices at the ends of the projections may be circular or non-circular, provided that the cross sectional dimensions or areas of the orifices at the ends of the projections are smaller than the cross sectional dimensions or areas of the pores at the garment facing side of the layer. Preferably, the perforated preformed film is not perfect but unidirectional, delivering fluid to the core in at least substantially one direction. Large expanded films suitable for use herein include, for example, the films described in US Pat. No. 637,819 and US Pat. No. 4,591,523.

Giant expanded films suitable for use herein include, for example, the films described in US Pat. No. 4,637,819 and US Pat. No. 4,591,523.

Suitable monolithic films are available from Hytrel, such as Hytrel HTR-8206 and Hytrel G 3548, available from DuPont Corporation, USA, and Index 93 Congress, Session 7A, "Adding value. to Nonwovens ", JC. Cardinal and Y. Trouilhet, DuPont de Nemours International S.A, Switzerland.

According to the present invention, the backsheet may comprise an additional backsheet layer in addition to the water vapor transmission layer. The additional layer may be located in any plane of the water vapor transmission layer of the backsheet. The additional layer can be any material, for example a fibrous layer such as a woven fabric, a nonwoven fabric or an additional water vapor permeable perforated film.

According to the present invention, the sweat pad may further comprise an absorbent core. The absorbent material or core may be a fluffy fibrous absorbent core comprising hydrogel particles, optionally a laminated tissue with or without particulate material including hydrogel particles. Absorbent core fibers can be any known in the art and include polymeric fibers, such as cellulose fibers or matrix fibers that are absorbent or nonabsorbent. In addition, tissues having sufficient basis weight and absorbency can be used in the absorbent core according to the invention.

According to the present invention, the sweat pad of the present invention may further comprise a topsheet. Suitable topsheets may comprise a single layer or multiple layers. In a preferred embodiment, the topsheet comprises a first layer providing a user facing surface of the topsheet, and a second layer between the first layer and the absorbent structure / core. The topsheet provides a layer through which the liquid to be absorbed passes and penetrates into the absorbent material. Thus, the absorbent core is located between the backsheet and the topsheet.

The topsheet as a whole should therefore be individually compliant, soft in feel and non-irritating to the wearer's skin. It may also have elasticity so that it can be stretched in one or two directions. Typically, the topsheet may extend throughout the absorbent structure and extend with the desired side flaps, side wrapping elements, or vanes to form all or part thereof. According to the invention, the top sheet can be formed from any material marketed for this purpose and known in the art, for example a nonwoven fabric, a film or a combination of the two. In a preferred embodiment of the invention, at least one of the topsheet layers comprises a hydrophobic, liquid permeable perforated polymeric film. Preferably, the top layer is described in detail in, for example, US Pat. No. 3,929,135, US Pat. No. 4,151,240, US Pat. No. 4,319,868, US Pat. No. 4,324,426, US Pat. No. 4,343,314 and US Pat. No. 4,591,523. As such, it has a film material with pores that facilitates the transfer of liquid from the wearer facing surface toward the absorbent structure. A commercially available topsheet suitable for use herein is BPC 45015 CPM (BPC 45105 CPM), available from BP Chemicals.

According to the present invention, a sweat pad is produced by joining various elements, such as the topsheet, backsheet and absorbent core, by any means known in the art. For example, the backsheet and / or topsheet may be bonded to each other or to the absorbent core by a continuous layer of adhesive, a patterned layer of adhesive, or an array of separation lines, spirals or dots of adhesive. Alternatively, the elements may be joined by thermal bonding, pressure bonding, ultrasonic bonding, dynamic mechanical bonding or any other suitable coupling means known in the art and any combination thereof. Preferably, the breathable backsheet is bonded to the other elements of the sweat pad such that there is preferably no loss of vapor permeability of the backsheet.

In a preferred embodiment of the present invention, when the sweat pad is used in conjunction with an apparel article or undergarment, the pad is provided with a garment fixing means for attaching the pad to the garment during use. For example, the garment fastening means may include mechanical fasteners such as hooks and loop fasteners, snaps or holders sold under the Velcro® brand name. Alternatively, the pad may be secured to the garment by a garment anchoring adhesive on the backsheet. The garment anchoring adhesive provides a means for securing the pad to the garment, preferably a means for securing the pad to a fold and wrap package that allows for convenient disposal when soiled. Typically, at least a portion of the garment facing surface of the backsheet is coated with an adhesive to form a garment anchoring adhesive. Any adhesive or glue used in the art for this purpose can be used as the anchoring adhesive herein. Most preferred are pressure sensitive adhesives. Suitable adhesives include Century A-305-IV, manufactured by Century Adhesives Corporation, Columbus, Ohio, and the National Starch and Chemical Company, Bridgewater, NJ. Instant LOK 34-2823 manufactured by Starch and Chemical Company, 3 Sigma 3153 manufactured by Sigma, LA203, available from Savare SpA, Italy. LA203) and Fuller H-2238ZP manufactured by HB Fuller Co.

The garment anchoring adhesive is typically applied to the backsheet by slot coating. In order to reduce the overall impact of the adhesive on the breathability of the backsheet and the sweat pad, the adhesive is preferably 60% of the garment facing surface of the backsheet. Above, preferably at least 80%, most preferably at least 90% is not to be applied. However, by using special distributions, for example thin strips, discontinuous strips, intermittent dots, non-uniform helical patterns or a combination of these shapes, the required adhesion is achieved even if the area of application to the surface is reduced.

Garment anchoring adhesives are typically covered with removable release paper or film to prevent the adhesive from drying or adhering to surfaces other than garments prior to use. Commercially available release paper or film can be used. Suitable examples are BL 40G EF MGA Silox C4R10, BI 30M-A Siloxes I / O (BL 30MG-) available from Akrosil Corporation. A SILOX EI / O) and BIEL 30MG-A siloxanes 4 pi / o (BL 30 MG-A SILOX 4 P / O).

In another aspect of the invention, the sweat pad may have wearer securing means such that it is attached to the wearer's body opposite the wearer garment. Typically such wearer anchoring adhesive is present on the wearer facing surface of the topsheet, or optionally at least a portion of the absorbent core. Alternatively, in particular applications such as wristbands and headbands may have wearer securing means by making at least a portion of the pad elastic.

According to the present invention, the sweat pads include armpit-, wrist- and head (forehead) sweat pads; Collar inserts; Shoe inserts; Hat bands; And chest pads. Sweat pads may also be useful in apparel, particularly sports apparel. The present invention is particularly suitable as an armpit sweat pad. In addition to the components described herein above, the sweat pad includes all structures and components typically included in products related to the intended use, such as garment anchoring means, release paper, wrapping elements, and the like. Typically the dimensions, flexibility, size and shape of the pads depend on the body position on which the pads are placed and can easily be modified by the skilled person depending on the end use. For example, armpit sweat pads are typically provided in a circular, elliptical, waning circular or elliptical shape, and are generally symmetrical in shape. Similarly, sweat pads can have a variety of colors to effectively avoid the indication that the pads are used, especially when used under clothing.

An example of a sweat pad according to the invention for use as an axillary sweat pad takes the oval form with dimensions of 150 mm (long diameter) and 100 mm (short diameter), and as its topsheet, BP Chemicals Double-perforated molded film, commercially available under the code name BPC 45105 CPM. The topsheet contains an absorbent gelling substance and a zeolite, an odor inhibiting active ingredient, and is codenamed Keo (Korma SpA) in Italy. 054. 02. 002, placed directly above the malodor suppressing laminate of the absorbent core. The backsheet includes two layers, the first layer having a tread film product ratio. A perforated molded film material supplied by the code name S225MD25 from Tredgar Film Products, BV, and in direct contact with the garment facing side of the absorbent core, the second nonwoven layer being cororogeme It lies directly below the garment facing film, available under the code name MD 2005 from Cororin GmbH. All layers are joined by spraying or spirally applying a hot melt adhesive. The garment fixing means is an adhesive commercially available from Savare SpA under the code name LA203 (LA203), and is applied in 5 mm strips spaced 5 mm apart from the garment facing surface of the nonwoven backsheet layer.

Claims (12)

A sweat pad comprising a backsheet and an absorbent core, comprising a malodor suppression system, wherein the backsheet is breathable. The method of claim 1, Sweat pads with odor suppression system contain sweat inhibitors. The method of claim 1, Sweat pads containing odor suppression system antibacterial. The method of claim 1, Sweat pad, wherein the malodor suppression system comprises one or more malodor inhibitors selected from zeolites, absorbent gelling materials, activated carbon, silica, and mixtures thereof. The method according to any one of claims 1 to 4, Sweat pads comprising a malodor suppression system of 5 to 400 g / m 2. The method according to any one of claims 1 to 4, A sweat pad, wherein the breathable backsheet comprises one or more layers selected from perforated molded polymeric film, two-dimensional planar perforated film, or monolithic film. The method of claim 6, The sweat pad, wherein the layer is a two-dimensional planar perforated layer, and the pores have an average diameter of 150 μm to 5 μm. The method of claim 6, A sweat pad, wherein the layer is a perforated shaped polymeric film, and the pores have an average diameter of 100 μm to 500 μm. The method of claim 6, A sweat pad comprising at least two layers, wherein the breathable backsheet comprises a first layer comprising a perforated layer and a second layer comprising a fibrous layer. The method according to any one of claims 1 to 4, A sweat pad further comprising a topsheet, wherein the absorbent core is located between the topsheet and the backsheet. The method according to any one of claims 1 to 4, Sweat pads in which the malodor suppression system is laminated on the core, on the back sheet, or on the back sheet and the core. The method according to any one of claims 1 to 4, The sweat pad which is an armpit sweat pad.