MXPA00011693A - Enhanced odor absorption by natural and synthetic polymers - Google Patents

Abstract

Odor reduction for products such as disposable diapers and training pants, sanitary napkins and tampons, incontinent products, and medical dressings is obtained by the use of an internal additive for synthetic polymers or an external additive for natural polymers. Results are further enhanced by the use of a surfactant especially in the case of synthetic polymers. Webs, fibers and films find uses as components of the described products and are effective in absorbing odors such as ammonia, triethylamine, indole and skatole, for example, which are commonly found in body fluids like sweat, menses, urine and fecal matter.

Description

IMPROVED ODOR ABSORPTION THROUGH NATURAL AND SYNTHETIC POLYMERS BACKGROUND OF THE INVENTION Field of the Invention The present invention is directed to devices, compositions and structures that are exposed to odoriferous conditions and to increasing the ability of such compositions and structures to absorb odors. Examples include non-woven fabrics or product components such as disposable diapers, sanitary napkins, incontinent products, under-arm pads and the like which are used to absorb sweat, urine, faeces or other exudates from the body.

Background Considerable success has been achieved in the design of products intended to absorb and retain human and animal waste materials. The construction of items such as disposable diapers and training pants, sanitary napkins and tampons, incontinence products and hospital dressings, for example, have been sophisticated with the addition of elastics, barrier cuffs, and the like. to retain the waste and prevent runoff. Reference may be made to the patents of the United States of America number 4,846,823 granted to Enloe and 4,846,825 to Enoloe and others, for examples of these products as disposable diapers. Odor control, on the other hand, remains a challenge that is exacerbated by the success of the design mentioned above which has led to larger amounts of waste that are being contained in the designed products that need to be changed less frequently. In addition, the desire for the ability to breathe in such products for increased comfort has added a challenge to odor control.

Most odors from body fluids contain certain components derived from bacteria and from degradation products associated with biological functions. The most common fluids have been found to contain as their main components reduced sulfur compounds such as hydrogen sulfide, dimethylsulfide, and dimethyldisulfide as well as other sources of odor, for example isovaleric acid. Other components are amines such as ammonia, triethylamine, nature, and escatole.

Attempts to prevent such odors from forming or absorbing those formed have involved antimicrobial treatments. The use of additives such as activated carbon, zeolites, metals such as copper, metal oxides, alumina hydrate, minerals such as holly, laconite, kaolin and modifications of molecular sieves have been suggested as well as the use of the base / acid interactions to neutralize the various odor-forming components. Despite their efforts, there is a need to control such odors without resting on complex structures or material modifications to achieve the desired effect.

SYNTHESIS OF THE INVENTION The present invention is directed to the discovery of the ability of certain compounds, for example, triglycerides and polyglycosides, to increase the malodor absorption properties of compositions and substrates such as naturally occurring polymers such as chitosan or alginates and synthetic polymers treated with surfactants. These resulting devices, compositions and materials are much more effective in absorbing odors, particularly those related to biological waste. In the applications subject to exposure of body exudates such as disposable diapers and training underpants, sanitary napkins and tampons, incontinent products and medical bandages, the present invention in the form of non-woven treated and other structures is particularly effective. Examples include the treatment of chitosan with an alkyl polyglycoside and the addition of an alkyl polyglycoside to a synthetic polymer melt providing odor absorption plus wettability. According to the invention substrates having an initial absorption of at least one of hydrogen sulfide, dimethyldisulfide, dimethyltrisulfide, isovaleric acid, ammonia, trimethylamine, character and scale of at least about 1%, particularly of at least about 34%, more particularly of at least about 44% is provided with an increase in its ability to absorb at least one of the odors by at least about 50%, particularly at least about 100% and more particularly at least about 500%.

DETAILED DESCRIPTION OF THE INCORPORATIONS Definitions As used herein the term "nonwoven fabric or fabric" means a fabric having a structure of individual fibers or threads which are interlocked, but not in a regular or identifiable manner as in a woven or woven fabric. Fabrics or non-woven fabrics have been formed from many processes such as, for example, meltblowing processes, spinning processes, and carded and bonded tissue processes. The basis weight of the non-woven fabrics is usually expressed in ounces of material per square yard (osy) or in grams per square meter (gsm) and useful fiber diameters are usually expressed in microns. (Note that to convert from ounces per square yard to grams per square meter, multiply ounces per square yard by 33.91). As used herein the term "microfibers" means small diameter fibers having an average diameter of no more than about 75 microns, for example, having an average diameter of from about 0.5 microns to about 50 microns, or more particularly, microfibers can have an average diameter of from about 2 microns to about 40 microns. Another frequently used expression of fiber diameter is denier, which is defined as grams per 9,000 meters of a fiber and the fiber diameter in square microns can be calculated, multiplied by the density in grams / cubic centimeter, multiplied by 0.00707. A lower denier indicates a finer fiber and a higher denier indicates a thicker or heavier fiber. For example, the diameter of a polypropylene fiber given as 15 microns can be converted to denier by placing the square, multiplying the result by .89 grams per cubic centimeter and multiplying by .00707. Therefore, a polypropylene fiber of 15 microns has a denier of about 1.42 (152 x 0.89 x .00707 = 1.415). Outside the United States of America, the unit of measurement is most commonly "tex", which is defined as grams per kilometer of fiber. The tex can be calculated as denier / 9. As used herein the term "spunbond fibers" refers to fibers of small diameter which are formed by extruding the molten thermoplastic material as filaments of a plurality of capillary, usually circular and fine vessels of a spinner with the diameter of the extruded filaments then being rapidly reduced as per the methods described, for example, in U.S. Patent No. 4,340,563 issued to Appel et al., in U.S. Patent No. 3,692,618 issued to Dorschner. and others, in U.S. Patent No. 3,802,817 issued to Matsuki et al., in U.S. Patent Nos. 3,338,992 and 3,341,394 issued to Kinney, in U.S. Patent No. 3,502,763 granted to Hartman, in the United States of America patent No. 3,502,538 granted to Levy, and in the patent of the United States of America No. 3,542,615 granted to Dobo and others, each of which is hereby incorporated by reference in its entirety. Spunbonded fibers are not generally tacky when they are deposited on a collecting surface and undergo a separate bonding step for integrity such as the thermal point bond defined below. Yarn bonded and cooled fibers are generally continuous and usually have larger average diameters of about 7 microns, more particularly between about 10 and 20 microns.

As used herein the term "polymer" generally includes, but is not limited to, homopolymers, copolymers, such as, for example, block, graft, random, and alternating copolymers, terpolymers, etc., and the mixtures and modifications thereof. In addition, unless specifically limited in another way, the term "polymer" includes all possible geometric configurations of the material. These configurations include, but are not limited to, isotactic, syndiotactic and random symmetries.

As used herein the term "monocomponent fiber" refers to a fiber formed from one or more extruders using only one polymer. This does not mean that fibers formed from a polymer to which small amounts of color additives, antistatic properties, lubrication, hydrophilicity, etc. have been added are excluded. These additives, for example titanium dioxide for color, are generally present in an amount of less than 5% by weight and more typically of about 2% by weight.

As used herein the term "conjugated fibers" refers to fibers which have been formed from at least two extruded polymers of separate extruders but spun together to form a fiber. Conjugated fibers are also sometimes referred to as multicomponent or bicomponent fibers. The polymers are usually different from each other even though the conjugated fibers can be monocomponent fibers. The polymers are arranged in different zones placed essentially constant across the cross section of the conjugated fibers and extend continuously along the length of the conjugated fibers. The configuration of such conjugated fibers can be, for example, a sheath / core arrangement where one polymer is surrounded by another or can be a side-by-side arrangement or an arrangement of "islands in the sea". Conjugated fibers are taught in U.S. Patent No. 5,108,820 issued to Kaneko et al., In U.S. Patent No. 5,336,552 issued to Strack et al., And in the U.S. Patent Number 5,382,400 granted to Pike and others, each of which is hereby incorporated by reference in its entirety. For the two component fibers, the polymers may be present in proportions of 75/25, 50/50, 25/75 or any other desired proportions.

As used herein the term "biconstituent fibers" refers to fibers which have been formed from at least two polymers extruded from the same extruder as a mixture. The term "mixture" is defined below. The biconstituent fibers do not have the various polymer components arranged in distinct zones placed relatively constant across the cross-sectional area of the fiber and the various polymers are usually non-continuous along the entire length of the fiber, instead of this, usually forming fibrils or protofibrils which start and end at random. Biconstituent fibers are sometimes referred to as multi-constituent fibers. Fibers of this general type are discussed in, for example, U.S. Patent No. 5,108,827 issued to Gessner. Bicomponent and biconstituent fibers are also discussed in the textbook "Polymer Blends and Compounds" by John A. Manson and Leslie H. Sperling, copyright 1976 by Plenum Press, a division of Plenum Publishing Corporation, New York , IBSN 0-306-30831-2, pages 273 to 277.

As the term "mixture" was used herein as applied to polymers, it means a mixture of two or more polymers, while the term "alloy" means a subclass of mixtures wherein the components are immiscible but have been compatibilized. The "miscibility" and the "immiscibility" are defined as mixtures that have negative and positive values, respectively, for the free energy of mixing. In addition, "compatibilization" is defined as the process for modifying the interfacial properties of an immiscible polymer mixture in order to make an alloy.

As used herein, "thermal point bonding" involves passing a fabric or web of fibers that are to have a bonded area of about 15%. Yet another common pattern is the star pattern - which has a united area of about 16.9%. The star-C pattern has a "corduroy" design or d bars in the transverse direction interrupted by shooting stars. Other common patterns include a diamond pattern with slightly off-centered and repetitive diamonds and a patter of woven wire that looks like its name suggests, for example, as a window grid. Typically, the percent bond area varies from about 10% to about 30% of the area of the fabric laminated fabric. As is known in the art, knit joints hold laminated layers together as well as impart integrity to each individual layer by joining the filaments and fibers within each layer.

As used herein, the term "personal care product" means diapers, underpants, absorbent undergarments, adult incontinence products, and women's hygiene products.

As used herein the term "Nature" refers to a common fecal odor that is usually associated with the breakdown of tryptophan derived from amino acids. This is a pyrrhola (2,3 benzopyrals) with a molecular formula of C8H7N, a molecular weight of 117.14 grams and a melting point of 52 ° C. It is soluble in hot water, hot alcohol, ether and benzene.

As the term "escatole" was used here, it refers to another common fecal smell, and this has its origins similar to those of the nature. The escatole is currently a methylated version of nature and is also referred to as "3-methylindole". The molecular weight is CgrySJg with a molecular weight of 131.17 grams, and has a melting point of 95 ° C. This is soluble in hot water, alcohol, benzene, chloroform and ether.

As used here the "isovaleric acid", (IVA) also called "3-methylbutanoic acid" is a compound with a stale cheese odor that is commonly associated with vomiting. This has a molecular formula of C5H10O2, and has a molecular weight of 102.13 grams. This is soluble in low concentrations in water, and is soluble in alcohol, chloroform and ether.

As used herein both "dimethyldisulfide (DMDS) and" dimethyltrisulfide "(DMTS) refer to reduced sulfur compounds that are associated with the metabolism of amino acids.Dimethyldisulfide has a molecular formula and a weight of CjHgSj, and 94.20 grams respectively Dimethyltrisulfide, on the other hand, is more difficult to describe, it is believed that it has a formula of C3H6C3 and a molecular weight of 126.2 grams.

As used herein, "triethylamine" (TEA) refers to a compound that is usually a consequence of alkylation of ammonia in the vapor phase. This smells strongly of ammonia and is alternatively mentioned as N, N-diethylethananamine with a molecular form of C6H15N and a molecular weight of 101.19 grams. This is slightly soluble in water at 25 ° C and is miscible in alcohol, ether and water below 18.7 ° C.

The "ammonia" has a molecular form of H3N is usually associated with the bacterial decomposition of urea in ammonia: Urea (in the urine) + Urease (in bacteria) > > > > > > Ammonia This is soluble in water, ethanol, methanol, chloroform and ether. The human nose can perceive very low concentrations of ammonia.

As used here, a given range is intended to include any and all of the lower ranges included. For example, a range of from 50-100 will also include 60-90, 55-80 and the like.

As used herein the term "consists essentially of" does not exclude the presence of additional materials which do not significantly affect the desired characteristics of a given composition. Examples include, without limitation, pigments, fillers, flow promoters, and the like.

As used herein and in the claims, the term "comprising" is inclusive or open ended and does not exclude additional non-recited elements, compositional components or steps of the method.

Test Procedures The analysis of the olo reducing capacities of each of the polymeric examples was carried out using standard headspace gas chromatography techniques as follows.

A flame ionization detector (FID) was used to analyze all odors except ammonia. A flame ionization detector responds to compounds that produce ions when burned in an air-hydrogen flame. Ammonia is an inorganic compound and does not easily produce ions when burned. Therefore, a thermal conductivity detector (TCD) was necessary to make the analysis with ammonia. A thermal conductivity detector, has two channels (one a reference (carrier gas) and the other has the effluent from the analytical column) to transfer the heat to the thermistor. The different thermal conductivities cause a difference in temperature which is proportional to the amount of analyte.

Two different GC columns were used. The column used in conjunction with the flame ionization detector is described below: • DB-210 capillary column 30m in length 0.25mm internal diameter 0.5 microns thick film The column used for the ammonia and the detector d thermal conductivity is described below: DB-1 capillary column 60m in length 0.32mm internal diameter 0.5 microns thick film When GSHS was used, pressures and gas flows affected the retention times and maximum forms of the test components. The variables that were kept constant for each detector are the column head pressure, the carrier gas pressure, the carrier gas, the ventilation flow, the purge ventilation flow, the detector temperature and the injector temperature. The different column temperature programs were used for each different bad smell in order to obtain optimal results. Below are the constants and temperature programs for each bad smell.

Flame Ionization Detector Conditions: Injector Temperature: 105 ° C Detector Temperature: 300 ° C Thermal Conductivity Detector Conditions: Injector Temperature: 105 ° C Detector Temperature: 150 ° C Temperature program used to analyze: 1) TEA, DMDS, and DMTS - 50 ° C for 2 minutes, then increase to 20 ° C per minute to 160 ° C. 2) Nature and Escatole - 50 ° C for 1 minute, then increase to 20 ° C per minute up to 240 ° C, remain at 240 ° C for 2 minutes. 3) Isovaleric acid - Start at 50 ° C and increase at 20 ° C per minute to 190 ° C, remain at 120 ° C for 1 minute. 4) Ammonia - Start at 40 ° C and increase to 10 ° C per minute up to 100 ° C.

The general procedure used for the analysis involved the steps established below after the necessary materials were obtained: sample containers of 20 cubic centimeters. screw cap sample containers of 2 cubic centimeters with rubber septum. container lids. Septum coated with Teflon crimper syringe 5μL Step 1 - A specific amount of material was weighed in a 20 cubic centimeter container.

Step 2 - The Teflon septum was placed on the lid with the Teflon face facing down.

Step 3 - A specific amount of bad odor was pulled from the 2 cubic centimeter container inside the syringe.

Step 4 - The bad smell was injected into the container with the tip of the needle touching the side of the container so that none of the liquid remained on top of the needle.

Step 5 - The container was quickly sealed.

Step 6 - The container was placed in the headspace swab to incubate at 37 ° C for at least 15 minutes.

Step 7 - The GC test was run on the container sequence.

Preparation of Bad Odor For each tested container a very specific amount of bad odors was injected. Care must be taken to repeat the injection procedure exactly. To save time some of the bad odors were grouped together in a supply solution. The supply solutions of each chemical were kept in 2-centimeter cubic screw-top containers that have a rubber septum.

The supply solutions of DMDS, DMTS, and TEA were taken directly from the bottles containing the chemicals. All three were in the liquid state to begin, so it was not necessary to make any alterations before the injection. The DMDS was 98% pure and 0.5μ of this undiluted liquid was used for each test. The DMTS used was 98 +% pure and 0.5μL of this undiluted liquid was also used for each test. The TEA used was 99 +% pure and again 0.5μL of the undiluted liquid were used. Chemical cad (DMDS, DMTS, and TEA) were introduced separately to the same container. Each chemical was injected into the test containers in an amount of 0.5μL.

Because the nature and the scale were also tested simultaneously, the supply solution of nature and scale was made up to 20% of character and 20% of escalate in methylene chloride. The compounds are solid in their natural states. The nature was used at 99% + pure and the escatole was used at 98% pure. The supply solution was injected in an amount of IμL into each container for the test. In this case the container was not capped and sealed immediately. The vessel was allowed to aerate for 1.5-2 minutes to allow some of the MeCl2 solvent to evaporate outside since during GC analysis it is a solvent that can compete with the actual components of interest.

The VAT was tested only. The supply solution was taken directly from the bottle containing the chemical. This is in the liquid state to start and so it was not necessary to make any alterations before the injection. This 99% undiluted pure chemical was injected in an amount of 0.5μL into each test vessel.

The ammonia was also tested only, but this was actually ammonium hydroxide that was injected into the sample containers. The ammonium hydroxide is in the liquid form and was 30% pure. This suffered a reaction which produces ammonia and water. To ensure that the ammonia was present in the test vessel, a sample was tested on a mass spectrometer. The amount used was tested by 2μL of the ammonium hydroxide solution.

The control data was obtained by running containers in the GC with only the specific amount of the supply solutions present. Those data were then compared to the containers with an absorber present to find the percentage difference.

Examples The invention will be illustrated by several examples. As will be understood by those skilled in the art, this invention is not limited to the examples presented and is broadly applicable within the scope of the appended claims.

The examples demonstrate the classes of absorbent polymers including both synthetic polymers, for example polyolefins, and natural polymers, for example, chitosan, chitin, cellulose and alginates. The classes of surfactants include the alkyl polyglycosides, the mixtures of castor oil derivatives (for example ethoxylated castor oil) and the alkyl esters of sorbitan (for example sorbitan monooleate). As the examples show, the odors are absorbed without a surfactant, these results are improved with the addition of a surfactant. In the case of quitisana, for example, the ability to absorb isovaleric acid, dimethyl sulfide and dimethyl trisulfide was dramatically increased above the untreated control.

COMPARATIVE EXAMPLE 1 This will serve as a basis for all the other examples that follow.

In this example, the activated carbon commercially mentioned as Sorb-A-Odor was weighed and presented in a 20 milliliter test vessel for GC analysis. After weighing the activated carbon, a known concentration of volatile was also introduced and the vessel closed immediately upon introduction of the volatile. The containers were introduced in the upper space and were maintained at 37 ° C. After incubation for about 15 minutes, the space above the sample was injected into the GC for analysis for the remaining volatile.

The samples of activated carbon weighed an average of 10.5 milligrams and several volatile compounds were exposed. The amount of volatile absorbed on a base percentage relative to its initial concentration was determined in each case. The initial amounts of the volatiles added to the 20-milliliter containers were as follows: 0.4685 milligrams of isovaleric acid, 0.52 milligrams of dimethyl disulfide, 0.5 milligrams of dimethyl trisulfide, 0.7 milligrams of triethylamine, 1 milligram of nature, and 1 milligram of escatole. The results of the absorption of volatiles on a minimum of triplicate samples, given in percentage absorbed was as follows: 99.8% for isovaleric acid, 99.4% for dimethyl disulfide, 100% for dimethyl trisulfide, 100% for triethylamine, 71% of nature and 18.5% of esctole.

COMPARATIVE EXAMPLE 2 Under the conditions specified in comparative example 1, Absents®, a commercially available molecular sieve obtained from UOP Industries and distributed by Gordo Laboratories, of Upper Darby, Pennsylvania, was subjected to all the volatiles listed above and was introduced in several weights with the following results: 15 milligrams absorbed 99.8% isovaleric acid; 40 milligrams absorbed 99.7% dimethyldisulfide and 99.9% dimethyldisulfide, and 100% triethylamine; and 15 milligrams absorbed 68% of nature and 32% of esctole.

COMPARATIVE EXAMPLE 3 Also under the conditions described in comparative example 1, the caustic soda Artn and Hammer® (purchased from the shelf) introduced at 5 milligrams absorbed 98.2% isovaleric acid; and 150 milligrams absorbed 8% of dimethylsulfide, 10% of dimethyltrisulfide, 0% of triethylamine, 1% of character and 1% of escatole.

COMPARATIVE EXAMPLE 4 Chitin (VNS-647) was obtained directly from Vanson Industries, of Redmond, WA provided as flake material it was subjected to the same volatiles with the following results: 10 milligrams absorbed 92.5% isovaleric acid, 0% dimethyldisulfide, 45% dimethyltrisulphide, 24% triethylamine, 77% nature and 70% escatole, COMPARATIVE EXAMPLE 5 Chitin, the acetylated form of chitin, was studied as a natural material to help reduce odors. Chitosan (version RNS-022 by Vanson) was prepared by dissolving the polymer in 2% acetic acid and setting a film using a doctor blade. Ten milligrams of chitosan acetate were able to absorb an average of 60% isovaleric acid, 1% dimethyldisulfide, 8% dimethyltrisulfide, 44% triethylamine, 90% nature and 67% d esctole.

EXAMPLE 5A The chitosan treated with 0.5% Glucopon 220UP of alkyl polyglycoside from Henkel Corporation by weight was also made into a film similar to the method described in COMPARATIVE EXAMPLE 5. Ten milligrams of that film were capable of absorbing an average of 97% acid. isovaleric acid, 18% dimethyldisulfide, 36% dimethyltrisulphide, 34% triethylamine, 84% nature and 58% escatole.

Comparing EXAMPLE 5A with EXAMPLE COMPARATIVE 5 demonstrates the ability of an alkyl polyglycoside to increase the capacity of chitosan to absorb isovaleric acid by 61%, dimethylsulfide by 1,800% dimethyltrisulfide by 450%.

EXAMPLE 6 The chitosan treated by adding 1% po weight of Glucopon was also made in a film similar to the method described in COMPARATIVE EXAMPLE 5. Die milligrams of that film were able to absorb an average of 99% isovaleric acid, 6% dimethyldisulfide , 46% of dimethyltrisulfide, 54% of triethylamine, 92% of character and 74% of esctole.

Comparing EXAMPLE 6 with COMPARATIVE EXAMPLE 5 demonstrates the ability of the alkyl polyglycoside to increase the capacity of chitosan to increase the polymer's ability to absorb isovaleric acid by 65%, dimethylsulfide by 600% and dimethyltrisulfide by 575%.

COMPARATIVE EXAMPLE 7 The calcium alginate fiber tow with and without additives was prepared by wet spinning of sodium alginate in a dry solution of C4.CI2, heat treating the resulting fibers. These were also subjected to the studies of odor absorption. The tow samples were cut in sample quantities of 10 milligrams s subjected to the same volatiles described in COMPARATIVE EXAMPLE 1. The samples of the calcium alginate fiber tow that were tested are designated as samples A, B, C , and D below: Sample A: calcium alginate (without additive), control.

Sample B: calcium alginate with 8% Absents® (the Absents described in COMPARATIVE EXAMPLE 2).

Sample C: calcium alginate with 4% activated carbon (the same activated carbon as in COMPARATIVE EXAMPLE 1) - Sample D: calcium alginate with 2% chitosan (the same chitosan used in COMPARATIVE EXAMPLE 5).

The following table shows the absorption characteristics of calcium alginate fibers.

T B L A% Volatile Absorbed where VAT = isovaleric acid TEA = triethylamine DMDS = dimethyldisulfide DMTS = dimethyltrisulfide It is believed that the calcium alginate incorporations mentioned above also benefit from the combination with the alkyl polyglycosides. As shown, the effective amount of the alkyl polyglycoside varies widely depending on the other odor absorbing components as well as the nature of the odor being absorbed. Useful amounts will often be in the range of from a 50% trace based on the total weight of the odor absorbing components with the higher amounts then 50% also being useful but less cost effective. In many cases an amount of up to around 10% will be more than cost effective. As shown by COMPARATIVE EXAMPLE 7, the odor absorbing component can comprise essentially 100% of the structure in which case the lower percentage values of the alkyl polyglycoside can be used. Other substrates such as monocomponent, multi component and multiconstituent nonwovens can also be treated with varying degrees of success depending on the polymers, treatments and odors that are being absorbed.

As has been demonstrated, the invention significantly improved odor reduction by absorbing odors. It will be apparent that the invention is applicable to many variations and alternatives and is useful in a wide variety of products including those for the containment of body exudates, for example. Other alternatives, modifications and variations will be apparent to those skilled in the art in light of the foregoing description. It is intended to encompass all those alternatives, modifications and variations and equivalents thereof within the appended claims. In this aspect, it is intended that such equivalents include compositional as well as structural equivalents.

For example, a screw and a nail are functional equivalents for holding materials even when they may not have the same structure.

Claims (20)

R E I V I N D I C A C I O N S

1. A device for reducing odors comprising: a substrate; Y a composition contained on or within a substrate, said composition comprises a triglyceride and / or polyglycoside, and wherein said substrate and / or said composition it comprises a naturally occurring polymer or synthetic polymer having odor reduction properties if said triglyceride and / or polyglycoside which are improved by the combination with the triglyceride and / or polyglycoside.

2. The device as claimed in clause 1 characterized in that said substrate is selected from the group consisting of chitosans and alginates and said composition comprises an alkyl polyglycoside.

3. The device as claimed in clause 2 characterized in that said substrate comprises a chitosan.

4. The device as claimed in clause 2 characterized in that said substrate comprises alginate.

5. The device as claimed in clause 1 characterized in that said substrate is in the form of a non-woven fabric.

6. The device as claimed in clause 1 characterized in that said improvement is in the range d of at least about 50%.

7. The device as claimed in clause 6 characterized in that said improvement is in the range d of at least about 100%.

8. The device as claimed in clause 7 characterized in that said improvement is in the range of at least about 500%.

9. The device as claimed in clause 1 characterized in that said substrate is selected from the group consisting of chitosans and alginates, and said composition comprises a triglyceride.

10. The device as claimed in clause 9 characterized in that said substrate comprises a chitosan.

11. The device as claimed in clause 9 characterized in that said substrate comprises alginate.

12. The device as claimed in clause 2 characterized in that said substrate is in the form of a non-woven fabric.

13. The device as claimed in clause 9 characterized in that said substrate is in the form of a non-woven fabric.

14. The device as claimed in clause 9 characterized in that said improvements are in the range of at least about 50%.

15. The device as claimed in clause 14 characterized in that said improvements are in the range of at least about 100%.

16. The device as claimed in clause 15 characterized in that said improvements are in the range of at least about 500%.

17. A device subjected to exposure body exudates that generate malodors selected from the group consisting of nature, escalate, isovaleric acid, dimethyldisulfide, dimethyltrisulfide, triethylamine and ammonia, said device comprises a substrate that has an initial capacity to absorb said bad odors said substrate comprises a naturally occurring polymer or a triglyceride or polyglycoside wherein said device has an improved absorption of said malodor when comparing said initial capacity.

18. The device as claimed in clause 17 in the form of a personal care product.

19. The device as claimed in clause 17 characterized in that said malodor includes isovaleric acid and said improvement exceeds 50%.

20. The device as claimed in clause 17 characterized in that said malodor is selected from the group consisting of dimethyltrisulfide and dimethyldisulfide and said improvement exceeds 100%, E U M E N Odor reduction for products such as disposable diapers and training underpants, sanitary napkins and tampons, incontinent products and medical bandages is obtained by the use of an internal additive for synthetic polymers or an additive. external for natural polymers. The results are also increased by the use of a surfactant especially in the case of synthetic polymers. The tissues, fibers and films find use as components of the products described and are effective in absorbing odors such as ammonia, triethylamine, character and escatole, for example, which are commonly found in body fluids such as sweat, menstrual fluids, urine and fecal matter.