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WO1996013994A1 - Semelle interne reduisant les odeurs et contenant un reactant particulaire reduisant les odeurs - Google Patents

Semelle interne reduisant les odeurs et contenant un reactant particulaire reduisant les odeurs Download PDF

Info

Publication number
WO1996013994A1
WO1996013994A1 PCT/US1995/014529 US9514529W WO9613994A1 WO 1996013994 A1 WO1996013994 A1 WO 1996013994A1 US 9514529 W US9514529 W US 9514529W WO 9613994 A1 WO9613994 A1 WO 9613994A1
Authority
WO
WIPO (PCT)
Prior art keywords
odor
fabric
odor reducing
reducing insole
insole according
Prior art date
Application number
PCT/US1995/014529
Other languages
English (en)
Inventor
Herbert Lapidus
Original Assignee
Combe Incorporated
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Combe Incorporated filed Critical Combe Incorporated
Publication of WO1996013994A1 publication Critical patent/WO1996013994A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/38—Built-in insoles joined to uppers during the manufacturing process, e.g. structural insoles; Insoles glued to shoes during the manufacturing process
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B1/00—Footwear characterised by the material
    • A43B1/0045—Footwear characterised by the material made at least partially of deodorant means
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B17/00—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined
    • A43B17/10—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined specially adapted for sweaty feet; waterproof
    • A43B17/102—Moisture absorbing socks; Moisture dissipating socks

Definitions

  • This invention relates to an odor reducing insole having a permeable fabric with odor reactant particles, such as sodium bicarbonate crystals, impregnated therein.
  • the invention also relates to an odor reducing insole having a permeable fabric layer impregnated with odor reactant particles which is adhered to an open-celled foam layer having finely ground activated charcoal homogeneously dispersed throughout the foam.
  • U.S. Patent No. 4,709,490 suggests but does not disclose incorporating odor neutralizing substances such as activated charcoal in either layer of an insole having a capillary layer of hydrophobic fibers superimposed on a moisture storing layer of absorbent fibers.
  • the layers of this insole are held together by mechanical needling or adhesive bonding.
  • an odor reactant such as sodium bicarbonate
  • activated charcoal reduces odor by adsorption, i.e., the diffusion of odiferous gas into the pores of the carbon particles and adhesion therein.
  • Silica gel is also a known adsorbent which functions in a similar way.
  • odor reactants such as sodium bicarbonate or zinc oxide reduce odors by undergoing a chemical reaction with odiferous compounds which results in the neutralization of their odiferous properties.
  • Sodium bicarbonate has been used to combat odor in non- insole applications by fixing the sodium bicarbonate on fibrous materials. Those applications, however, have consistently required a binder to fix the sodium bicarbonate on the material.
  • U.S. Patent No. 5,122,407 is directed to an odor-removing cover for absorbent pads wherein the cover is formed of a non ⁇ woven fibrous material coated with a fluorocarbon polymer that binds an odor absorbing reagent, preferably sodium bicarbonate, to the fibrous material.
  • 5,161,686 discloses an odor- absorbing web material which can be a non-woven sheet of synthetic fibers having incorporated therein a molecular sieve material, an alkaline salt, such as sodium bicarbonate, and a binding agent which allegedly allows odorous substances to pass therethrough.
  • This reference suggests employing the web in personal care products such as sanitary napkins and the like.
  • Another use of sodium bicarbonate is disclosed in U.S. Patent No. 5,254,386 which is directed to a self- deodorizing carpet prepared by treating the carpet fibers with an aqueous slurry of bicarbonate salts in combination with a suitable water based polymer latex to ensure that the bicarbonate is bound to the fibers.
  • an object of this invention to provide an odor reducing insole having an air permeable fabric layer impregnated with odor reactant particles.
  • the present invention is an odor reducing insole having a layer of air permeable fabric impregnated with odor reactant particles.
  • the odor reactant is preferably sodium bicarbonate.
  • the fabric may be comprised of permeable or nonpermeable fibers.
  • the preferred fabric is a nonwoven fabric comprised of permeable fibers. Since the odor reactant particles of the present invention are substantially free of adhesive or binding agent they provide more effective odor reduction than particles that have been occluded by adhesive. Moreover, the impregnation of the odor reactant particles in a single sheet of fabric is a cost effective method of providing an odor reactant on a substrate to provide reduction of foot odor when used as an insole.
  • This invention also includes the above-described odor reducing insole in combination with an adhered sheet of open-celled foam with activated charcoal homogeneously dispersed throughout.
  • This embodiment of the invention can advantageously provide an odor reducing insole having two types of odor reducing particles in a single composite.
  • an odor reducing reactant such as sodium bicarbonate
  • an odor reducing reactant such as sodium bicarbonate
  • the sheet of permeable fabric in combination with the open- cell foam containing the activated charcoal, which is an odor absorber.
  • Tests have shown that an insole having a sodium bicarbonate impregnated fabric layer in combination with a layer of activated charcoal containing open-celled foam is highly effective in reducing isovaleric acid, a known indicator of foot odor.
  • Figure 1 is a perspective view of the odor reducing insole of the present invention.
  • Figure 2 is a perspective view of another embodiment of the odor reducing insole of the present invention having an adhered layer of open-celled foam with activated charcoal homogeneously dispersed throughout. DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • Figure 1 shows an example of the odor reducing insole of the present invention 1 which comprises a single sheet of permeable fabric 2 impregnated with odor reactant particles 3.
  • the odor reactant particles 3 are distributed throughout the matrix of the permeable fabric although the proportion of odor reactant particles will generally vary in concentration throughout the fabric matrix. Typically, the particles are more highly concentrated on or near the surface of the fabric.
  • the sheet of permeable fabric 2 may be a woven or non- woven material. As employed herein, the phrase
  • permeable fabric means a fabric which is permeable to air.
  • such permeable fabrics contain interstices located between the fibers of the fabric in which odor reactant particles can effectively lodge after application of a solution containing such particles to the fabric.
  • the fabric material may be comprised of nylon, acrylonitrile, and vinyl copolymers, rayon, polyester, cellulose acetate, cotton, linen, wool, silk, polypropylene or mixtures thereof.
  • the preferred fabric of the present invention is a nonwoven fabric, although any air permeable fabric will suffice. Particularly preferred are fabrics comprised of permeable fibers such as a nonwoven polyester and a cotton/polyester blend.
  • permeable fabrics comprised of nonpermeable fibers may be advantageously employed in the present invention.
  • Exemplary permeable fabrics comprised of nonpermeable fibers include polypropylene and the like.
  • Fiber permeability is dependent upon whether a fiber will absorb water.
  • permeable fiber means a fiber which will absorb water, whether sprayed, immersed in an aqueous solution or the like.
  • a nonpermeable fiber means a fiber which does not absorb water to any significant degree after exposure to water, a humid atmosphere or the like. Whether a fiber is permeable or nonpermeable is dependent, inter alia, upon its hydrophilicity and porosity.
  • a permeable fiber is hydrophilic and/or relatively porous, while a nonpermeable fiber tends to be hydrophobic and/or substantially nonporous. Whether a fiber is permeable to water or not can be readily determined by a person of ordinary skill in the art.
  • water-permeable fibers are impregnated with an aqueous solution of the odor reactant particles and thus provide an excellent vehicle for holding such particles. It was widely believed that such impregnation was unlikely in nonpermeable fibers. It was discovered, however, that even permeable fabrics comprised of nonpermeable fibers provide a suitable vehicle for delivering an effective amount of odor reactant particles. It is believed that this unexpected efficacy is a result of the odor reactant particles becoming lodged in the interstices of the permeable fabric matrix, thus providing odor reducing potential despite the use of nonpermeable fibers in the permeable fabric.
  • the odor reactant particles 3 that are employed in the present invention reduce odor by chemically neutralizing odiferous compounds.
  • Such odor reactants are generally selected from carbonates, bicarbonates and oxides.
  • Exemplary odor reactants include sodium bicarbonate, sodium carbonate, calcium hydroxide, calcium carbonate, magnesium carbonate and zinc oxide.
  • Sodium bicarbonate is particularly preferred as the odor reactant particle of the inventive insole.
  • Other potential odor reactants known in the art can be used, but are generally believed to be less effective.
  • the odor reactant particle will be present in the odor reducing insole in an amount ranging from about 5 grams to about 80 grams per square yard of the permeable fabric.
  • sodium bicarbonate is used as the odor reactant, then it is preferable to employ the approximate amount of 50 to 70 grams per square yard of the permeable fabric.
  • the odor reactant particles illustrated above can also be mixed with other types of odor reducing particles.
  • the amount of odor reactant particle that is impregnated on the sheet of fabric is dependent upon the particular odor reactant particles employed. Determining the appropriate amount of odor reactant particle is well within the knowledge of those skilled in the art. Generally, the minimum effective amount of odor reactant particle is applied to provide control over the reduction of foot odor.
  • the odor reducing insole may be prepared by spraying a concentrated aqueous solution or dispersion of the odor reactant on the fabric.
  • concentration of the solution or dispersion will depend on the final concentration of odor reactant which one desires to impregnate in the fabric.
  • sodium bicarbonate an aqueous solution having sodium bicarbonate present in the amount of about 5 to about 25% w/w of the total solution is prepared.
  • the sodium bicarbonate is present in the amount of about 15 to about 25% w/w of the impregnating solution.
  • the sodium bicarbonate solution, and possibly solutions of other odor reactants may be heated to enhance the solubility of the odor reactant.
  • the sodium bicarbonate solution is warmed to approximately 120°F before application to the fabric.
  • the odor reactant solution may also be applied to the fabric by immersing the fabric in the solution. When the fabric is immersed, it is generally held in the solution for sufficient time to totally saturate the fabric with reactant solution. The time of immersion is dependent on the type of immersion equipment used and the rate of fabric pick-up.
  • the fabric is dried. Typically the fabric is dried by passing the impregnated fabric through an oven at a temperature of from about 250-325 °F. After the impregnated fabric is dried, insole inserts may be stamped or cut in the shape of a foot by any means known to those skilled in the art. On the other hand, if desired, additional layers of material or foam can be adhered to the impregnated sheet prior to forming the insole shape.
  • the odor reducing insole 4 comprises a sheet of permeable fabric 5, impregnated with odor reactant particles 6.
  • a layer of open- celled foam 7 having activated charcoal particles 8 homogeneously distributed throughout the foam is adhered to fabric 5.
  • This embodiment of the invention provides two types of odor reducing particles in a single insole.
  • odor reducing particles 6 are sodium bicarbonate which provides an odor reducing insole having an odor reacting sodium bicarbonate and an odor absorbing activated charcoal.
  • the open-celled foam 7 having activated charcoal homogeneously distributed throughout can be prepared in accordance with the disclosure of U.S. Reissue Patent No. 29,501 and U.S. Patent No.
  • the sheet of permeable fabric 5 has extending fibers on the side facing the open-cell foam layer to facilitate adherence of the foam layer to the fabric.
  • the open celled foam layer can be adhered to the permeable fabric by generating the foam on the fabric.
  • the foam encases the surface fibers of the permeable fabric which binds the foam layer to the permeable fabric.
  • An odor reducing insole was prepared by spraying an aqueous solution of approximately 15% w/w sodium bicarbonate at a solution temperature of approximately 120°F on a white colored sheet of permeable fabric, TietexTM, a nonwoven polyester fabric available from Tietex Company. After wetting the fabric, it was passed through an oven at about 275°F, until it was dry. A latex slurry capable of forming an open-celled foam and containing homogeneously dispersed activated charcoal was deposited on the impregnated fabric. Thereafter, the slurry was cured to provide an odor reducing composite having sodium bicarbonate impregnated in the permeable fabric and activated charcoal in the open-celled foam layer. The resulting composite was cut into the shape of an insole.
  • An odor reducing composite was prepared in the manner described in Example 1, except a blue colored TietexTM permeable fabric was used.
  • An odor reducing composite was prepared in the manner described in Example 1, except that a polypropylene permeable fabric having nonpermeable fibers was used instead of the nonwoven polyester.
  • the odor reducing insoles prepared in Examples 1-3 were tested for efficacy by determining their ability to retain isovaleric acid.
  • short chain fatty acids such as isovaleric acid and butyric acid, are recognized in the art as key components of foot odor and thus can be used as markers for evaluating foot odor reduction.
  • Example 1 a commercially available open-celled foam insole containing activated charcoal in combination with an untreated polypropylene fabric layer (Commercial Insole #1) , and another commercially available odor reducing insole comprised of activated charcoal in a nonwoven matrix (Commercial Insole #2) were each tested for isovaleric acid retention by packing known amounts of each sample in a stainless steel column and determining the amount of isovaleric acid adsorbed or reacted by gas chromatographic analysis. The results of these tests are set forth in Table 1. TABLE 1

Landscapes

  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Laminated Bodies (AREA)

Abstract

Une semelle interne (1, 4) réduisant les odeurs est constituée d'une feuille en tissu perméable (2, 5) imprégnée d'un réactant particulaire (3, 6) atténuant les odeurs. Le tissu peut être constitué de fibres perméables ou imperméables.
PCT/US1995/014529 1994-11-08 1995-11-03 Semelle interne reduisant les odeurs et contenant un reactant particulaire reduisant les odeurs WO1996013994A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US33739194A 1994-11-08 1994-11-08
US08/337,391 1994-11-08
US36299694A 1994-12-23 1994-12-23
US08/362,996 1994-12-23

Publications (1)

Publication Number Publication Date
WO1996013994A1 true WO1996013994A1 (fr) 1996-05-17

Family

ID=26990671

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1995/014529 WO1996013994A1 (fr) 1994-11-08 1995-11-03 Semelle interne reduisant les odeurs et contenant un reactant particulaire reduisant les odeurs

Country Status (2)

Country Link
AR (1) AR000086A1 (fr)
WO (1) WO1996013994A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2915854A1 (fr) * 2007-05-10 2008-11-14 Karim Oumnia Article chaussant a semelle ventilee
WO2012072828A1 (fr) * 2010-10-26 2012-06-07 Zahonero Virgili, S.L. Mousse de latex désodorisante et son procédé de fabrication
AT12605U1 (de) * 2011-07-12 2012-08-15 Leopold Ramel Schuheinlage
WO2012160435A3 (fr) * 2011-05-23 2013-01-17 Procalcado-Produtora De Componentes Para Semelle hautement absorbante et ses applications
US9560896B1 (en) 2014-02-12 2017-02-07 Soxsols, Llc Insole for footwear
WO2017123637A1 (fr) * 2016-01-11 2017-07-20 Lee William B Substrat traité par composé métallique amphotère et procédés de réduction des odeurs corporelles au moyen des substrats traités
USD858970S1 (en) 2016-12-05 2019-09-10 Protalus LLC Insole
USD859802S1 (en) 2018-01-19 2019-09-17 Protalus LLC Insole
CN110662450A (zh) * 2017-05-25 2020-01-07 耐克创新有限合伙公司 具有包括骨料的拉胀鞋底结构的鞋类物品

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3842519A (en) * 1973-01-26 1974-10-22 Combe Inc Deodorizer sheet material
US4062131A (en) * 1976-09-10 1977-12-13 Scholl, Inc. Insoles for footwear
US4257176A (en) * 1979-03-09 1981-03-24 Scholl, Inc. Insole with material released under foot loads
US4461099A (en) * 1983-02-28 1984-07-24 Bailly Richard Louis Molded odor-absorbing laminate
US4464850A (en) * 1981-12-09 1984-08-14 Firma Carl Freudenberg Shoe insert
US4533351A (en) * 1982-04-26 1985-08-06 Pennwalt Corporation Foam rubber insoles containing Ottacide-P
US4642912A (en) * 1984-05-02 1987-02-17 Scholl, Inc. Shoe insole
US4709490A (en) * 1985-06-05 1987-12-01 Firma Carl Freudenberg Insole
WO1993006757A1 (fr) * 1991-10-11 1993-04-15 Advanced Polymer Systems, Inc. Systeme et procede de liberation d'un deodorant dans une chaussure

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3842519A (en) * 1973-01-26 1974-10-22 Combe Inc Deodorizer sheet material
USRE29501E (en) * 1973-01-26 1977-12-27 Combe Incorporated Deodorizer sheet material and insole
US4062131A (en) * 1976-09-10 1977-12-13 Scholl, Inc. Insoles for footwear
US4257176A (en) * 1979-03-09 1981-03-24 Scholl, Inc. Insole with material released under foot loads
US4464850A (en) * 1981-12-09 1984-08-14 Firma Carl Freudenberg Shoe insert
US4533351A (en) * 1982-04-26 1985-08-06 Pennwalt Corporation Foam rubber insoles containing Ottacide-P
US4461099A (en) * 1983-02-28 1984-07-24 Bailly Richard Louis Molded odor-absorbing laminate
US4642912A (en) * 1984-05-02 1987-02-17 Scholl, Inc. Shoe insole
US4709490A (en) * 1985-06-05 1987-12-01 Firma Carl Freudenberg Insole
WO1993006757A1 (fr) * 1991-10-11 1993-04-15 Advanced Polymer Systems, Inc. Systeme et procede de liberation d'un deodorant dans une chaussure

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008148975A3 (fr) * 2007-05-10 2009-02-19 Karim Oumnia Article chaussant à semelle ventilée
FR2915854A1 (fr) * 2007-05-10 2008-11-14 Karim Oumnia Article chaussant a semelle ventilee
WO2012072828A1 (fr) * 2010-10-26 2012-06-07 Zahonero Virgili, S.L. Mousse de latex désodorisante et son procédé de fabrication
WO2012160435A3 (fr) * 2011-05-23 2013-01-17 Procalcado-Produtora De Componentes Para Semelle hautement absorbante et ses applications
AT12605U1 (de) * 2011-07-12 2012-08-15 Leopold Ramel Schuheinlage
US10045590B2 (en) 2014-02-12 2018-08-14 Soxsols, Llc Insole for footwear
US9560896B1 (en) 2014-02-12 2017-02-07 Soxsols, Llc Insole for footwear
WO2017123637A1 (fr) * 2016-01-11 2017-07-20 Lee William B Substrat traité par composé métallique amphotère et procédés de réduction des odeurs corporelles au moyen des substrats traités
USD858970S1 (en) 2016-12-05 2019-09-10 Protalus LLC Insole
USD859803S1 (en) 2016-12-05 2019-09-17 Protalus LLC Insole
CN110662450A (zh) * 2017-05-25 2020-01-07 耐克创新有限合伙公司 具有包括骨料的拉胀鞋底结构的鞋类物品
US11058173B2 (en) 2017-05-25 2021-07-13 Nike, Inc. Article of footwear with auxetic sole structure that includes aggregate
USD859802S1 (en) 2018-01-19 2019-09-17 Protalus LLC Insole
USD862862S1 (en) 2018-01-19 2019-10-15 Protalus LLC Insole
USD880830S1 (en) 2018-01-19 2020-04-14 Protalus, Llc Insole

Also Published As

Publication number Publication date
AR000086A1 (es) 1997-05-21

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