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WO1991007996A1 - Dispositif parfumeur chimiquement ou mecaniquement active et methode - Google Patents

Dispositif parfumeur chimiquement ou mecaniquement active et methode Download PDF

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Publication number
WO1991007996A1
WO1991007996A1 PCT/US1990/007010 US9007010W WO9107996A1 WO 1991007996 A1 WO1991007996 A1 WO 1991007996A1 US 9007010 W US9007010 W US 9007010W WO 9107996 A1 WO9107996 A1 WO 9107996A1
Authority
WO
WIPO (PCT)
Prior art keywords
fragrance
heat source
heat
release
air
Prior art date
Application number
PCT/US1990/007010
Other languages
English (en)
Inventor
Arturo A. Villamarin
Original Assignee
The Clorox Company
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 The Clorox Company filed Critical The Clorox Company
Publication of WO1991007996A1 publication Critical patent/WO1991007996A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/015—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone
    • A61L9/02—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone using substances evaporated in the air by heating or combustion
    • A61L9/03—Apparatus therefor

Definitions

  • This invention relates to a fragrance releas ⁇ ing device. More particularly, the invention relates to a self contained package having a fluent, volatilizable fragrance and an exothermic heat source for volatilizing the fragrance.
  • fragrance dispensing systems There are many types of fragrance dispensing systems on the market, which are used in the different places, for example the inner spaces of appliances for the purpose of covering over the odors, in kitchens, bathrooms, and the like. Most of thes ⁇ e systems are protected during transport or storage in an aroma-tight packaging, for example, in a bag, in boxes, cans bottles and the like, before their application to avoid unnecessary or undesired aromatic substance emission.
  • the outer packaging is removed only immediately before use of the aroma dispenser.
  • sachet One example of this is the well known sachet. These are passive devices.
  • Fragrances are dispensed from aerosol cans as a spray. Liquids are used to form a fragrance by evaporation from a wick. In other instances, solid volatilizable cake materials are permitted to evaporate thus dispensing a fragrance. Fragrance candles or burning incense have also been used. Most of these systems produce a short lived or low level of fra- grance.
  • potpourri is a mixture of leaves, flower petals or buds, stems, seeds and the like. This has been used in a passive manner where the aroma is simply allowed to emanate into the air. This produces a very low level of fragrance.
  • An effort to improve on this is the "simmering potpourri".
  • the potpourri of leaves, flower, stems, seeds etc. are boiled like a tea in a ceramic urn heated by a candle.
  • This system has the following advantages: User is involved and natural scents, cinnamon, apple, bayberry, etc. may be used. It is used once and discarded. it sets a mood in kitchen, fireplace, bedroom or the like.
  • Simmering potpourri also has other disadvan- tages: There is the smell of candle burning. The appliance requires washing. Molten candle must be scrapped off of a dish, or holder. It must be carefully watched to prevent possible fires, and spillage also for this reason is not safe with small children and pets.
  • the present invention provides a simple to operate, disposable, clean potpourri frjgrancing device.
  • the device is safe and does not need to be attended, unlike other potpourri devices that need to simmer using an external heat source such as a stove, candle or electrical device.
  • the product and by-prod ⁇ ucts of the chemical reaction are safe unlike the burning of candles, gas stoves or burning of incense.
  • the spent device may be kept, if desired, as a sachet for passive fragrancing of drawers, closets, etc.
  • the device of the invention may be used in small enclosed spaces such as campers, trailers, or cabins. It can also be used to deliver a secondary benefit such as disinfectant or insect killer/repel- lant, in combination with the fragrance or by itself.
  • a further object of the invention is to provide a fragrance dispensing device equivalent to a simmering potpourri in a self contained package.
  • the invention consists of a self heating room fragrancing delivery system having a pouch containing an inner porous pouch of a chemical mixture which reacts with oxygen when exposed to air, generat- ing heat.
  • the heat generated once the devise is opened, is used to evaporate a fragrance composition adsorbed in a pad placed attached to the walls of the inner pouch.
  • An insulating pad is provided inside the inner pouch, to direct the heat in one direction and provide a rest for the device.
  • a portable self-contained heat generating source used to evaporate a fragrance at the user's will; in a clean disposable manner.
  • a chemical reac ⁇ tion is used to generate the heat.
  • the physical components of the packette and their function, are: -A peel-off label to operate -A fragrance pad which is separate or integral with the inner envelope.
  • the reactant is contained in an envelope engineered to control the reaction.
  • a heat reflec ⁇ tor/insulator used to evaporate a fragrance or fragrance composition and is simple, portable and disposable.
  • the device is a packette or similar article having a separate com ⁇ partment to hold the heat-storing/generating chemical composition and an outer envelope or closure to main ⁇ tain the device serviceable until the time it is used.
  • Figure 1 is a cross sectional view of one embodiment of the fragrance device of the present invention.
  • Figure 2 is a plan view of the lower side of the inner bag shown in Figure 1;
  • Figure 3 and 4 are partial views, showing details of the device in Figure 1;
  • Figure 5 is a cross-sectional view of an alternative embodiment of the invention.
  • Figure 6 and 7 are respectively, partial top and bottom plan views with parts broken away to show details of the device of Figure 5;
  • Figure 8 is a graph showing control of heat release over a period of time;
  • Figure 9 is a- graph showing amount of fra ⁇ grance release versus temperature and time.
  • FIG. 1 shows a cross section of the device, taken along the lines 2-2 of Figure 1.
  • Envelope 1 has an inner envelope 2 inside.
  • These envelopes are made of heat sealable material or materials sealable by other common method such as high frequency or ultrason ⁇ ic welding. These may or may not be attached to each other in a single weld at 3 as shown, although it is preferable for economy of manufacture.
  • Outer envelope 1 is provided with one or more pre-perforated windows 4, Figure 3 and 4 on either one or both sides of envelope 1.
  • the pre-perforated windows 4 are sealed with a label 5 suitable to ob ⁇ struct the perforations 6 such that the air imperme ⁇ ability of film of envelope 2 is not impaired.
  • the purpose of label 5 is to seal perforation 4 and servo as the activating mechanism for the device.
  • the inner envelope 2 is used to contain the reactants 7 and to provide a means to throttle the kinetics of the reaction.
  • the reaction is controlled by the rate of flow of air (oxygen) into the chemical mixture by judicious selection of the degree of porosi- ty of the material forming the envelope.
  • Figure 2 depicts one case where the material of envelope 2 is actually non-porous but a plurality of air ducts 8 have been provided to about one third of the total surface area 9.
  • the total number of air ducts can be varied at will as is the surface area covered by them.
  • a single orifice may be provided; at the other, a woven or non-woven membrane may be used having various pore size densities.
  • the materials composing the upper and lower surfaces 10 and 11 of envelope 2 may be of two dissimilar materials.
  • one surface may be made of porous material while the other may be non-porous or have a discrete number of vent orifices, as mentioned above.
  • the thickness of the materials chosen for envelope 2 can also be a reaction controlling parameter and may be chosen from a few thousands of an inch thick to several tenths of an inch. This is important, for example, for one embodiment of the invention.
  • Figure 1 shows an example where both sides of the envelope 2 are identical. It also shows that between the lower side 11 of envelope 2 and the outer envelope 1, there is a pad of material 12 substantially thicker than either of the materials for either envelopes 1 or 2. This is an insulator. The function of pad 12 is described below. In this arrangement, the lower side 11 of the inner envelope 2 and the insulator pad 12 may be collapsed into one single material layer. In this case the air flow is directed preferentially from above. This arrangement, aside from providing a different reaction environment, presents an economic advantage in manufac- turing and material usage.
  • the device 4 may be provided with a heat insulator 12 on one of its sides as previously de ⁇ scribed. Although the device will work without the insulator; some advantages are derived from its inclu- sion in the package. There is a thermodynamic advan ⁇ tage in that heat flow from exothermic heat mixture reactants 7 is restricted in the direction of the insulator, therefore there is enhancement in the efficient use of the heat energy released heat pad 13 carrying the fragrance composition to evaporate and propel the fragrance molecules into the atmosphere, i.e. the higher the energy input, the higher the average kinetic energy of the fragrance molecules - or the partial pressure of the system - thus the greater fragrance output obtained with the device.
  • the secondary advantage derived from insula ⁇ tor 12 is the deflection of heat away from the surface on which the fragrance device rests. Some surfaces where the fragrance device may be laid could be heat sensitive and could be damaged. Again, this prevents, also, the resting surface from becoming a thermodynami- cally preferred heat sink, thus making the direction of heat flow less than optimal.
  • FIG. 5 shows a second embodiment of the invention having an outer air impermeable envelope 20 with upper and lower layers 21 and 22 respectively, sealed at seam 23.
  • Envelope 20 contains an inner - 7 -
  • Inner envelope 24 having a lower surface 25, an upper surface 26 and a heat insulating layer 27 in contact with the inner side of lower surface 25.
  • the upper surface 26 has a porous layer 28 which may be woven or felt like which carries the fragrance and is also air permeable.
  • Inner envelope 24 contains the heat producing chemical mixture 29.
  • Additional air openings 30 may be provided in lower surface 25 which are used in combination with an air permeable insulation layer 27 to admit air to the reaction mixture 29.
  • an air permeable insulation layer 27 to admit air to the reaction mixture 29.
  • the heat from exothermic mixture 29 evaporates the fragrance from layer 28 to provide a fragrance in the immediate atmosphere, i.e. in room, closet or the like.
  • the inner layer 25 has openings 30 closed with a porous membrane or pad 27 used to regulate the inflow of air into the package and also pad 28 to carry the fragrance. If the same pad or membrane is used for both purposes e.g. pad 28, the amount of fragrance on the pad should be limited to an amount which will not seal the pores which would starve the reaction from the inflow of oxygen. Otherwise, the area of the pad carrying the fragrance may be isolated by any suitable means.
  • Self-heating fragrance generating pouches were prepared with two polyethylene coated aluminum film sections 3 x 3" in size.
  • the film was perforated with eight orifices 13/32" in diameter having a total area of 1.03 in. then the film was laminated with a textured non-woven membrane 80gms/sq. yd. in weight made of rayon/polypropylene, thus closing the orifice.
  • the film was perforated with a single opening 1 7/8 x 1 7/8". The opening was closed with a pad made of polyester felt, 2 2" and .08" thick.
  • the pouch thus formed was filled with 25gms. of the composition shown in Table I below.
  • the pad was saturated with 2.5gms of a fragrance composition shown in Table II below.
  • the completed pouches were indi ⁇ vidually packed in air tight envelopes. After several days (4) representative samples were tested for heat generation & fragrance delivery.
  • Figure 8 is a typical curve of the exotherm generated by the devise. The measurement was carried out with a copper thermo ⁇ couple using a Linseis chart recorder model type 2045.
  • Example II Air (oxygen) diffusivity into the package is key to the control of reaction rate.
  • flow experiments were carried out. While holding the following parame ⁇ ters constant; chemical composition, particle size of reactants, total amount of reactants, packing density, package surface area and membrane porosity, the percent surface area of the total package allowed for the air inlet membrane was varied from 0.25% to 100% in eight steps.
  • Eight packages were prepared and their tempera ⁇ ture profiles recorded. Each generated a distinct heat profile; the packages with the larger membrane surface area gave the greatest initial exotherm but the short ⁇ est time at high temperature (above 40°C, 104°F) .
  • the package with smaller membrane surfaces showed lower initial exother s but progressively longer durations up to four hours above 104 F.
  • the heat profiles are shown in Figure 9.
  • One of the objectives in controlling the heat generation profile is the potential ability to deliver a fragrance in a way that is most preferred by the consumer.
  • a floral fragrance high volatility
  • an oriental or a spicy fragrance may require high temperature for a relatively short duration to get the less volatile components airborne.
  • Studies of fragrance delivery under high temperature conditions show that temper ⁇ atures as high as 158 F are necessary to volatilize a typical fragrance (Lemon), such that at least 0.5 gm. is delivered within one hour. This result was obtained by placing 2 gms. of fragrance on an aluminum dish on a hot plate having a surface temperature of 158°F.
  • the fragrance delivery method of the present invention is capable of sustaining 158 F for about 40 minutes with a peak temperature of 176 F. Th is is su ff icient to meet the above requirements to volatilize a typical fragrance.

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  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Fats And Perfumes (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)

Abstract

Emballage indépendant dégageant du parfum contenant un parfum courant volatil et une source chimique de chaleur.
PCT/US1990/007010 1989-12-04 1990-11-30 Dispositif parfumeur chimiquement ou mecaniquement active et methode WO1991007996A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US44523789A 1989-12-04 1989-12-04
US445,237 1989-12-04

Publications (1)

Publication Number Publication Date
WO1991007996A1 true WO1991007996A1 (fr) 1991-06-13

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ID=23768110

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1990/007010 WO1991007996A1 (fr) 1989-12-04 1990-11-30 Dispositif parfumeur chimiquement ou mecaniquement active et methode

Country Status (2)

Country Link
EP (1) EP0461226A1 (fr)
WO (1) WO1991007996A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5593635A (en) * 1994-08-05 1997-01-14 F. Cube Co. Ltd. Method for perfuming conveyances and perfuming article therefor
WO1999048539A1 (fr) * 1998-03-20 1999-09-30 The Procter & Gamble Company Procede de degagement d'un arome
EP1205194A1 (fr) * 2000-11-07 2002-05-15 The Procter & Gamble Company Appareil auto-chauffant pour la délivrance prolongée de matériaux volatils
EP1205195A1 (fr) * 2000-11-07 2002-05-15 The Procter & Gamble Company Appareil auto-chauffant pour délivrer des matériaux volatils activable de manière regulable
EP1205193A1 (fr) * 2000-11-07 2002-05-15 The Procter & Gamble Company Appareil facilement activable auto-chauffant pour délivrer des matériaux volatils
EP1205192A1 (fr) * 2000-11-07 2002-05-15 The Procter & Gamble Company Appareil efficace auto-chauffant pour délivrer des matériaux volatils
WO2002038194A1 (fr) * 2000-11-07 2002-05-16 The Procter & Gamble Company Dispositifs autochauffants de diffusion de matieres volatiles actives par commande
WO2004103852A1 (fr) * 2003-05-19 2004-12-02 Warmways Healthcare Holdings Plc Dispositif de production de chaleur thermo-active
US7243788B2 (en) 2003-10-22 2007-07-17 Kimberly-Clark Worldwide, Inc. Package for segregating and mixing substances
GB2441111A (en) * 2006-08-25 2008-02-27 Warmways Holdings Plc Vapour-release device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB823377A (en) * 1955-08-15 1959-11-11 Waeco Ltd Improvements in or relating to vaporising devices for the vaporisation of heat-sensitive substances
FR2343802A1 (fr) * 1976-03-09 1977-10-07 Toyo Ink Mfg Co Composition thermogene a base d'un sulfure de metal alcalin
GB2097257A (en) * 1981-04-20 1982-11-03 Landsberger David Thermal sensitive deodorant wafer
FR2620622A1 (fr) * 1987-09-23 1989-03-24 Conceptions Innovations Atel Cartouche d'elements de support poreux utile pour un dispositif de diffusion de substances volatiles telles que des parfums

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB823377A (en) * 1955-08-15 1959-11-11 Waeco Ltd Improvements in or relating to vaporising devices for the vaporisation of heat-sensitive substances
FR2343802A1 (fr) * 1976-03-09 1977-10-07 Toyo Ink Mfg Co Composition thermogene a base d'un sulfure de metal alcalin
GB2097257A (en) * 1981-04-20 1982-11-03 Landsberger David Thermal sensitive deodorant wafer
FR2620622A1 (fr) * 1987-09-23 1989-03-24 Conceptions Innovations Atel Cartouche d'elements de support poreux utile pour un dispositif de diffusion de substances volatiles telles que des parfums

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5593635A (en) * 1994-08-05 1997-01-14 F. Cube Co. Ltd. Method for perfuming conveyances and perfuming article therefor
US5916528A (en) * 1994-08-05 1999-06-29 F. Cube Co. Ltd. Method for perfuming conveyances and perfuming article therefor
WO1999048539A1 (fr) * 1998-03-20 1999-09-30 The Procter & Gamble Company Procede de degagement d'un arome
EP1205194A1 (fr) * 2000-11-07 2002-05-15 The Procter & Gamble Company Appareil auto-chauffant pour la délivrance prolongée de matériaux volatils
EP1205195A1 (fr) * 2000-11-07 2002-05-15 The Procter & Gamble Company Appareil auto-chauffant pour délivrer des matériaux volatils activable de manière regulable
EP1205193A1 (fr) * 2000-11-07 2002-05-15 The Procter & Gamble Company Appareil facilement activable auto-chauffant pour délivrer des matériaux volatils
EP1205192A1 (fr) * 2000-11-07 2002-05-15 The Procter & Gamble Company Appareil efficace auto-chauffant pour délivrer des matériaux volatils
WO2002038194A1 (fr) * 2000-11-07 2002-05-16 The Procter & Gamble Company Dispositifs autochauffants de diffusion de matieres volatiles actives par commande
WO2002038192A1 (fr) * 2000-11-07 2002-05-16 The Procter & Gamble Company Dispositif autochauffant de diffusion de matieres volatiles pouvant etre facilement active
WO2002038193A1 (fr) * 2000-11-07 2002-05-16 The Procter & Gamble Company Dispositif autochauffant de diffusion prolongee de matieres volatiles
WO2002038195A1 (fr) * 2000-11-07 2002-05-16 The Procter & Gamble Company Dispositif auto-chauffant efficace pour distribuer des matieres volatiles
WO2004103852A1 (fr) * 2003-05-19 2004-12-02 Warmways Healthcare Holdings Plc Dispositif de production de chaleur thermo-active
US7243788B2 (en) 2003-10-22 2007-07-17 Kimberly-Clark Worldwide, Inc. Package for segregating and mixing substances
GB2441111A (en) * 2006-08-25 2008-02-27 Warmways Holdings Plc Vapour-release device

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Publication number Publication date
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