Classifications

• • 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
• • 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
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/249921—Web or sheet containing structurally defined element or component
  • Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
  • Y10T428/249986—Void-containing component contains also a solid fiber or solid particle
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/249921—Web or sheet containing structurally defined element or component
  • Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
  • Y10T428/249987—With nonvoid component of specified composition
  • Y10T428/249988—Of about the same composition as, and adjacent to, the void-containing component
  • Y10T428/249989—Integrally formed skin

Definitions

• ABSTRACT Shoe inserts are produced comprising a sole-shaped sheet or the like of foamed latex impregnated with activated charcoal. When such a shaped sheet is used as a shoe insert or insole it is found to-substantially reduce or even eliminate. foot odors frequently associated with perspiring feet.
• My invention is directed to a unique shoe insert, or insole, which effectively and economically minimizes odors which are often associated with feet and which occur in conjunction with or as a result of perspiration.
• my shoe insert comprises a foamed material
• the resulting latex-foam sheets, containing charcoal dispersed therethrough, are then cut into such sizes as are appropriate for fitting comfortably into shoes, male or female.
• the insole is inserted into the shoe with the impregnated latex facing downward in the shoe to thereby permit contact of the web or backing material with the foot, and with the sock covering it.
• EXAMPLE I Ingredients Dry Weight GR-S Latex 100.0 Ibs. Sulfur 1.5 lbs. Zinc Oxide 4.0 5.0 lbs. Surfactant 9.0 lbs. Filler 100.0 lbs.
• the GR-S latex a synthetic cold-type styrenebutodiene manufactured by the Goodyear Company of Akron, Ohio, is used in the form of an aqueous slurry (143.0 lbs).
• the activated charcoal available under the tradename Nu-Char, is also used in the form of an aqueous slurry (150.0 lbs.).
• the procedure used is as follows: The latex slurry is weighed out into a suitable mixing vessel and there is then added 9.0 lbs. of the surfactant, dioctyl-sodiumsulfo-succinate, available from the American Cyanamid Company of New York, under the trade name of Aerosol O T. There is then added 2.5 lbs. of potassium persulfate as the accelerator, followed by additions of 1.5 lbs. of rubber makers grade sulfur, 4.0 to 5.0 lbs. of zinc oxide (American Process) and 1.2 lbs of dioctyl phospite antioxidant.
• the surfactant dioctyl-sodiumsulfo-succinate
• Aerosol O T Aerosol O T
• Silica flour filler (100.0 lbs.) is then added, followed by addition of the activated charcoal aqueous slurry (143. lbs. of which is Nu-Char).
• a suitable thickener e.g., Methocel may be added.
• the above components are then mixed to form a homogenous mass, and is then fed into a hopper, thence into a homogenizer, preferably an Oaks mixer, which is a rotor stator type homogenizer.
• a homogenizer preferably an Oaks mixer, which is a rotor stator type homogenizer.
• Preferable two mixers are used in series.
• air is injected to control the pour density of the product.
• the base weight of the finished controlled by regulation of this air.
• the material is then pumped into the second mixer, also a homogenizer, where the froth is refined, controlling the cell structure size.
• the thickness of the flow is controlled by a doctor blade set to give a finished foam guage of /1000 inch.
• the latex mix may be applied to a transfer paper instead.
• my sheet material can be produced with or without a fabric laminate.
• Cup weights are taken after the mix leaves the second mixer; cup weights between and grams are acceptable, 87 gramsbeing preferred.
• the tare weight (cup) is 24 grams.
• the resulting material is then cured and dried in a forced hot air oven at temperatures ranging from 310 F to 350 F, with approximately 3 minutes of dwell time.
• open-celled foam in sheet form comprising my invention be produced using latex
• other opencelled foams such as polyurethane foams and vinyl chloride plastisol foams, especially where a slightly more rigid product is desired.
• a shoe insert for absorbing odors resulting from perspiring feet comprising a cured sheet of opencelled foam, at least one side of the sheet having a relatively smooth skin formed during curing which is impervious to passage of charcoal particles, said foam containing homogeneously distributed through the solid part thereof finely divided activated charcoal particles in an amount effective to absorb odors when said sheet is subjected to contact with foot perspiration and to passage of odor-filled air through interstitial spaces within said foam, said charcoal particles having been incorporated prior to frothing and curing of said foam.
• said foam is selected from the group consisting of latex foams, polyurethane foams, and vinyl chloride plastisol foams.

Landscapes

• Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
• Separation Of Gases By Adsorption (AREA)
• Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
• Laminated Bodies (AREA)
• Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
• Treating Waste Gases (AREA)
• Solid-Sorbent Or Filter-Aiding Compositions (AREA)
• Compositions Of Macromolecular Compounds (AREA)
• Casting Or Compression Moulding Of Plastics Or The Like (AREA)
• Molding Of Porous Articles (AREA)
• Chemical Or Physical Treatment Of Fibers (AREA)
• Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Priority Applications (22)

Applications Claiming Priority (1)

Related Child Applications (1)

Publications (1)

Family

ID=23273574

Family Applications (2)

Family Applications After (1)

Country Status (15)

Cited By (33)

Families Citing this family (18)

Citations (4)

Family Cites Families (11)

• 1973
  • 1973-01-26 US US00326757A patent/US3842519A/en not_active Expired - Lifetime
• 1974
  • 1974-01-14 CA CA190,085A patent/CA1046043A/en not_active Expired
  • 1974-01-15 ZA ZA740265A patent/ZA74265B/xx unknown
  • 1974-01-17 GB GB216674A patent/GB1471351A/en not_active Expired
  • 1974-01-17 GB GB3849676A patent/GB1471352A/en not_active Expired
  • 1974-01-23 NL NL7400910A patent/NL7400910A/xx unknown
  • 1974-01-24 SE SE7400929A patent/SE416022B/sv not_active IP Right Cessation
  • 1974-01-24 ES ES422591A patent/ES422591A1/es not_active Expired
  • 1974-01-24 IT IT47904/74A patent/IT1002755B/it active
  • 1974-01-25 BE BE140204A patent/BE810188A/xx not_active IP Right Cessation
  • 1974-01-25 AR AR252084A patent/AR203638A1/es active
  • 1974-01-25 JP JP1087174A patent/JPS5713282B2/ja not_active Expired
  • 1974-01-25 DE DE19742403652 patent/DE2403652B2/de not_active Ceased
  • 1974-01-25 BR BR551/74A patent/BR7400551D0/pt unknown
  • 1974-01-25 FR FR7402539A patent/FR2215242B1/fr not_active Expired
  • 1974-01-25 DK DK040974A patent/DK156262C/da not_active IP Right Cessation
• 1976
  • 1976-10-20 US US05/734,185 patent/USRE29501E/en not_active Expired - Lifetime
• 1977
  • 1977-04-21 SE SE7704632A patent/SE7704632L/sv not_active Application Discontinuation
• 1980
  • 1980-12-18 JP JP17812980A patent/JPS56139120A/ja active Pending

Patent Citations (4)

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