WO2011121360A1 - Volatile liquid transfer materials comprising balsa wood - Google Patents

Volatile liquid transfer materials comprising balsa wood Download PDF

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Publication number
WO2011121360A1
WO2011121360A1 PCT/GB2011/050661 GB2011050661W WO2011121360A1 WO 2011121360 A1 WO2011121360 A1 WO 2011121360A1 GB 2011050661 W GB2011050661 W GB 2011050661W WO 2011121360 A1 WO2011121360 A1 WO 2011121360A1
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Prior art keywords
transfer material
emanation
volatile liquid
transfer
balsa wood
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Application number
PCT/GB2011/050661
Other languages
French (fr)
Inventor
Helen Stephenson
Original Assignee
Reckitt & Colman (Overseas) Limited
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Filing date
Publication date
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Publication of WO2011121360A1 publication Critical patent/WO2011121360A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
    • A01M1/00—Stationary means for catching or killing insects
    • A01M1/20—Poisoning, narcotising, or burning insects
    • A01M1/2022—Poisoning or narcotising insects by vaporising an insecticide
    • A01M1/2027—Poisoning or narcotising insects by vaporising an insecticide without heating
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
    • A01N25/18—Vapour or smoke emitting compositions with delayed or sustained release
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
    • A01N25/34—Shaped forms, e.g. sheets, not provided for in any other sub-group of this main group
    • 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
    • A61L9/04—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone using substances evaporated in the air without heating
    • A61L9/042—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone using substances evaporated in the air without heating with the help of a macromolecular compound as a carrier or diluent
    • 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
    • A61L9/04—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone using substances evaporated in the air without heating
    • A61L9/12—Apparatus, e.g. holders, therefor
    • A61L9/127—Apparatus, e.g. holders, therefor comprising a wick
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00—Medicinal preparations characterised by special physical form
    • A61K9/0012—Galenical forms characterised by the site of application
    • A61K9/007—Pulmonary tract; Aromatherapy

Definitions

  • the present invention relates to liquid transfer materials, wicks, made of plant material and their use for the transfer and evaporation of volatile liquids comprising actives, such as fragrances, insecticides, fungicides, pesticides, sanitizing materials and pharmaceuticals are provided.
  • wick materials are cellulose, either in the form of cardboard (pressed pulp) or fibres, porous plastic graphite and even ceramic.
  • cellulose either in the form of cardboard (pressed pulp) or fibres, porous plastic graphite and even ceramic.
  • Increasingly natural materials are used, commonly used natural materials include plant stem materials such as bamboo and rattan.
  • wick material The efficiency of a particular wick material depends on the nature of the liquid, or component liquids within the liquid. Most available wick materials, such as those mentioned above, have a limited porosity and liquid transfer rate/evaporation rate due, at least in part, to fractionation and/or blocking/clogging of the wick. Fractionation over time will change the character and/or intensity of the active and will slow evaporation, this is particularly noticeable for fragrances wherein common wicks cause the 'high notes' of a fragrance to be evaporated when the wick is first exposed to the fragranced liquid, and the low notes' are evaporated thereafter which affects the user s experience.
  • a transfer material for transferring and evaporating a volatile liquid containing one or more active materials
  • the active material comprises at least one of: a fragrances; an insecticide; a fungicide; a pesticide; a sanitizing material; and/or a pharmaceutical: and wherein the transfer material comprises dried balsa wood from the plant species Ochroma Pyramidale.
  • an emanation device comprising:
  • a reservoir for containing a volatile liquid containing one or more active materials wherein the active material comprises at least one of: a fragrance; an insecticide; a fungicide; a pesticide; a sanitizing material; and/or a pharmaceutical; and a transfer material having one end disposed within the reservoir to. in use, be in fluid communication with the volatile liquid and having the other end exposed outside of the reservoir wherein the transfer material comprises dried balsa wood from the plant species Ochroma Pyramidate.
  • the emanation device may further comprise a separate emanation surface wherein, in use. the balsa wood transfer material is arranged to transfer the liquid from the reservoir to the emanation surface without substantial emanation of the liquid from said transfer material.
  • the emanating surface may be any suitable surface made of any suitable material for emanating the liquid therefrom into the surrounding environment.
  • an emanation device comprising:
  • a reservoir for containing a volatile liquid containing one or more active materials wherein the active material comprises at least one of. a fragrance; an insecticide; a fungicide; a pesticide; a sanitizing material; and/or a pharmaceutical; and
  • liquid conduit in the device of the third embodiment is arranged, in use, to provide volatile liquid to the transfer material on an intermittent basis.
  • a method of disseminating a volatile liquid containing one or more active materials wherein the active material comprises at least one of: a fragrance; an insecticide; a fungicide; a pesticide; a sanitizing material; and/or a pharmaceutical; from a reservoir of said volatile liquid into the surrounding atmosphere comprising transferring and evaporating said volatile liquid with a transfer material comprising dried balsa wood from the plant species Ochroma Pyramidale.
  • Dried balsa wood has, surprisingly, demonstrated the desired properties of being able to efficiently transfer liquids containing actives, both aqueous and non-aqueous liquids, at a uniform evaporation rate without significant fractionation.
  • balsa wood transfer material is dried and may be used in crude form, or they may be first sanded or shaved.
  • said balsa wood transfer material may be shaped by any convenient means to give rods or sheets of regular cross-section, shaping may be effected by routing, sawing, planing, cutting, lathing or forming in a die.
  • the regular cross-section may by any desired shape, such as circular, elliptical, square, rectangular or polygonal.
  • the balsa wood transfer material may be molded into a desired shape, said molding may be of the balsa wood before it is first dried or of balsa wood that is initially dried before being wetted to undergo the molding process.
  • the molding of the balsa wood transfer material is to impart a curved shape thereto, whilst the internal mechanics of the resulting structure is not fully understood, it is thought that the curved surface leads to improved emanation of volatile material due a stretching and/or opening of the internal capillaries of the material.
  • the balsa wood transfer material of the present invention may be formed into appropriate sizes and shapes suitable for emanation surfaces having cross-sections with an area of 10mm 2 - 500mm 2 , and preferably 25mm 2 - 400mm 2 , and more preferably 50mm 2 - 300mm 2 , and most preferably 50mm 2 - 250mm 2 .
  • the balsa wood transfer material of the present invention may be formed into appropriate sizes and shapes suitable for emanation surfaces having lengths of 1cm - 150cm, and preferably 5cm
  • the balsa wood transfer material of the present invention may be formed into appropriate sizes and shapes suitable for emanation surfaces having widths of 1mm - 500mm, and preferably 2mm
  • the balsa wood transfer material is elongate, such as with rod or sheet shapes and the like
  • the elongate aspect of the transfer ma terial is substantially co-axial with the grain of the balsa wood.
  • the emanation devices of the present invention may be provided with air circulation means wherein said means are arranged to urge air, in use, toward and/or away and/or through the balsa wood transfer material and/or the separate emanation surface in order to increase the rate of emanation of volatile liquid therefrom.
  • the transfer materials of the present invention may be provided with one or more apertures therein and/or therethrough in order to increase the rate of emanation of volatile liquid therefrom.
  • a test was prepared in order to determine the effectiveness wrth which different materials known for use as transfer materials would evaporate a fragranced liquid relative to dried balsa wood when the liquid was supplied at a constant supply rate.
  • the fragranced liquid was a combination of fragrant essential oil with hydrocarbon solvents.
  • Figs. 1 & 2 illustrate, all of the four transfer materials were provided with fragranced liquid at a substantially identical supply rate, the difference in supply rate being the result of tolerance imperfections in the supply apparatus.
  • Fig. 2 illustrates the difference between the Supply rate and the Evaporation rate from Fig.1 expressed as a %. Over the initial 8 hour period it is clear that the wooden transfer materials perform statistically better than the plastics transfer materials of polypropylene and low density polyethylene membrane.
  • Wicking the ability of a transport material to transport liquid from a source of liquid along its length was measured.
  • the various transfer materials were cut to the same dimensions: 85x35mm rectangles, apart from the reed due to the natural form thereof and these were instead dimensioned equivalents to 200mm length x 3mm wide.
  • Table A illustrates the time taken by the transfer material to transport a fragranced liquid comprising a combination of essential fragranced oil with hydrocsrbon solvents over a distance of 75mm, or distance over a 15 minutes (900 seconds) period if 75mm was not achieved.
  • wicking ability of the various transport materials is also displayed in Fig. 3 In which it can be seen that cellulose demonstrated the greatest wicking ability, balsa being marginally better than reed and all of these three materials being better at wicking than both the cintered polyethylene and the polyethylene membrane, the latter demonstrating the least amount of wicking ability.
  • Tables B & C illustrate the ability of the transfer materials to evaporate a set amount of the fragranced liquid.
  • Table B illustrates that each transfer material was loaded with a substantially identical amount of fragranced liquid (0.29g 0.045g) and Table C records the weight loss over time.
  • Fig. 4 shows the graphical output of the results of Table C to illustrate the evaporation rate produced by the transfer materials. Balsa demonstrates a significantly greater evaporation rate relative to the other transfer materials in which reed, cellulose and the polyethylene membrane perform similarly and cintered polyethylene illustrates the lowest evaporation rate.
  • Table E records the weight loss over time for each transfer material from the point of saturation with the fragranced liquid.
  • Fig. 5 shows the graphical output of the results of Table C to illustrate the evaporation rate produced by the transfer materials. Balsa clearly demonstrates a significantly greater evaporation rate relative to the other transfer materials.
  • the plastics transfer materials all perform broadly similar with cintered polyethylene having the highest evaporation rate of these 3 materials, and the notably poorest evaporation rate is provided by reed.
  • balsa is an unexpectedly high performing transfer material across a broad spectrum of circumstances due to high wicking performance, an ability to absorb large quantities of liquid relative to its weight and. surprisingly, being capable of evaporation of liquids at a surprisingly high rate of evaporation regardless of the amount of liquid loading (partial or saturated) undertaken by the balsa transfer material.

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  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Pest Control & Pesticides (AREA)
  • Toxicology (AREA)
  • Engineering & Computer Science (AREA)
  • Veterinary Medicine (AREA)
  • Environmental Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Zoology (AREA)
  • Epidemiology (AREA)
  • Public Health (AREA)
  • Wood Science & Technology (AREA)
  • Dentistry (AREA)
  • Plant Pathology (AREA)
  • Agronomy & Crop Science (AREA)
  • Insects & Arthropods (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
  • Catching Or Destruction (AREA)

Abstract

A transfer material for transferring and evaporating a volatile liquid containing one or more active materials is described wherein the active material comprises at least one of; a fragrance; an insecticide; a fungicide; a pesticide; a sanitizing material; and/or a pharmaceutical; and wherein the transfer material comprises dried balsa wood from the plant species Ochroma Pyramidale.

Description

VOLATILE LIQUID TRANSFER MATERIALS COMPRISING BALSA WOOD
Field of the Invention
The present invention relates to liquid transfer materials, wicks, made of plant material and their use for the transfer and evaporation of volatile liquids comprising actives, such as fragrances, insecticides, fungicides, pesticides, sanitizing materials and pharmaceuticals are provided.
Background
Examples of commonly used wick materials are cellulose, either in the form of cardboard (pressed pulp) or fibres, porous plastic graphite and even ceramic. Increasingly natural materials are used, commonly used natural materials include plant stem materials such as bamboo and rattan.
The efficiency of a particular wick material depends on the nature of the liquid, or component liquids within the liquid. Most available wick materials, such as those mentioned above, have a limited porosity and liquid transfer rate/evaporation rate due, at least in part, to fractionation and/or blocking/clogging of the wick. Fractionation over time will change the character and/or intensity of the active and will slow evaporation, this is particularly noticeable for fragrances wherein common wicks cause the 'high notes' of a fragrance to be evaporated when the wick is first exposed to the fragranced liquid, and the low notes' are evaporated thereafter which affects the user s experience.
Therefore, there remains a need for a transfer element material that can efficiently transfer liquids containing actives at a substantially uniform rate preferably without tending towards fractionation.
Summary of Invention
According to a first aspect of the present invention there is provided therefore a transfer material for transferring and evaporating a volatile liquid containing one or more active materials wherein the active material comprises at least one of: a fragrances; an insecticide; a fungicide; a pesticide; a sanitizing material; and/or a pharmaceutical: and wherein the transfer material comprises dried balsa wood from the plant species Ochroma Pyramidale.
According to a second aspect of the present invention there is provided an emanation device comprising:
a reservoir for containing a volatile liquid containing one or more active materials wherein the active material comprises at least one of: a fragrance; an insecticide; a fungicide; a pesticide; a sanitizing material; and/or a pharmaceutical; and a transfer material having one end disposed within the reservoir to. in use, be in fluid communication with the volatile liquid and having the other end exposed outside of the reservoir wherein the transfer material comprises dried balsa wood from the plant species Ochroma Pyramidate.
The emanation device according to the second aspect may further comprise a separate emanation surface wherein, in use. the balsa wood transfer material is arranged to transfer the liquid from the reservoir to the emanation surface without substantial emanation of the liquid from said transfer material. The emanating surface may be any suitable surface made of any suitable material for emanating the liquid therefrom into the surrounding environment.
According to a third aspect of the present invention there is provided an emanation device comprising:
a reservoir for containing a volatile liquid containing one or more active materials wherein the active material comprises at least one of. a fragrance; an insecticide; a fungicide; a pesticide; a sanitizing material; and/or a pharmaceutical; and
a liquid conduit for transporting volatile liquid from the reservoir to a transfer material for emanation therefrom, wherein the transfer material comprises dried balsa wood from the plant species Ochroma Pyramidate.
Preferably the liquid conduit in the device of the third embodiment is arranged, in use, to provide volatile liquid to the transfer material on an intermittent basis.
According to a fourth aspect of the present invention there is provided therefore a method of disseminating a volatile liquid containing one or more active materials wherein the active material comprises at least one of: a fragrance; an insecticide; a fungicide; a pesticide; a sanitizing material; and/or a pharmaceutical; from a reservoir of said volatile liquid into the surrounding atmosphere comprising transferring and evaporating said volatile liquid with a transfer material comprising dried balsa wood from the plant species Ochroma Pyramidale.
Dried balsa wood has, surprisingly, demonstrated the desired properties of being able to efficiently transfer liquids containing actives, both aqueous and non-aqueous liquids, at a uniform evaporation rate without significant fractionation.
The balsa wood transfer material is dried and may be used in crude form, or they may be first sanded or shaved. Alternatively or additionally said balsa wood transfer material may be shaped by any convenient means to give rods or sheets of regular cross-section, shaping may be effected by routing, sawing, planing, cutting, lathing or forming in a die. The regular cross-section may by any desired shape, such as circular, elliptical, square, rectangular or polygonal.
As a further alternative the balsa wood transfer material may be molded into a desired shape, said molding may be of the balsa wood before it is first dried or of balsa wood that is initially dried before being wetted to undergo the molding process. Preferably the molding of the balsa wood transfer material is to impart a curved shape thereto, whilst the internal mechanics of the resulting structure is not fully understood, it is thought that the curved surface leads to improved emanation of volatile material due a stretching and/or opening of the internal capillaries of the material.
The balsa wood transfer material of the present invention may be formed into appropriate sizes and shapes suitable for emanation surfaces having cross-sections with an area of 10mm2 - 500mm2, and preferably 25mm2 - 400mm2, and more preferably 50mm2 - 300mm2, and most preferably 50mm2 - 250mm2.
The balsa wood transfer material of the present invention may be formed into appropriate sizes and shapes suitable for emanation surfaces having lengths of 1cm - 150cm, and preferably 5cm
- 100cm. and more preferably 10cm - 50cm, and even most preferably 10cm - 25em.
The balsa wood transfer material of the present invention may be formed into appropriate sizes and shapes suitable for emanation surfaces having widths of 1mm - 500mm, and preferably 2mm
- 200mm. and more preferably 3mm - 100mm, and even most preferably 5mm - 50mm.
Preferably where the balsa wood transfer material is elongate, such as with rod or sheet shapes and the like, the elongate aspect of the transfer ma terial is substantially co-axial with the grain of the balsa wood.
The emanation devices of the present invention may be provided with air circulation means wherein said means are arranged to urge air, in use, toward and/or away and/or through the balsa wood transfer material and/or the separate emanation surface in order to increase the rate of emanation of volatile liquid therefrom.
The transfer materials of the present invention may be provided with one or more apertures therein and/or therethrough in order to increase the rate of emanation of volatile liquid therefrom. Description of an Embodiment
Embodiments of the invention will now be described, by way of example only with reference to the drawings Figs. 1-5.
A test was prepared in order to determine the effectiveness wrth which different materials known for use as transfer materials would evaporate a fragranced liquid relative to dried balsa wood when the liquid was supplied at a constant supply rate. The fragranced liquid was a combination of fragrant essential oil with hydrocarbon solvents. As Figs. 1 & 2 illustrate, all of the four transfer materials were provided with fragranced liquid at a substantially identical supply rate, the difference in supply rate being the result of tolerance imperfections in the supply apparatus. Fig. 2 illustrates the difference between the Supply rate and the Evaporation rate from Fig.1 expressed as a %. Over the initial 8 hour period it is clear that the wooden transfer materials perform statistically better than the plastics transfer materials of polypropylene and low density polyethylene membrane.
It was noted that the plastics transfer materials were tending toward discolouration whereas the wooden transfer materials were resisting any discolouration.
It was also noted that toward the end of the 8 hour period the liquid applied to the bamboo wood had started to pool on Ihe surface of the bamboo which could potentially result in a safety hazard. The pooling may be the result of saturation of the bamboo transfer material or may result for a different reason, however, this is clearly unsatisfactory for a transfer material. For further performance testing an alternative wooden/natural material was required, reed wood (rattan) was selected as a comparative example of natural material, reed being commonly used in the field of air freshening as a means of wicking and emanating a fragranced liquid.
Wicking. the ability of a transport material to transport liquid from a source of liquid along its length was measured. For the wicking test the various transfer materials were cut to the same dimensions: 85x35mm rectangles, apart from the reed due to the natural form thereof and these were instead dimensioned equivalents to 200mm length x 3mm wide. Table A below illustrates the time taken by the transfer material to transport a fragranced liquid comprising a combination of essential fragranced oil with hydrocsrbon solvents over a distance of 75mm, or distance over a 15 minutes (900 seconds) period if 75mm was not achieved.
Figure imgf000006_0001
The results of the wicking ability of the various transport materials is also displayed in Fig. 3 In which it can be seen that cellulose demonstrated the greatest wicking ability, balsa being marginally better than reed and all of these three materials being better at wicking than both the cintered polyethylene and the polyethylene membrane, the latter demonstrating the least amount of wicking ability.
Figure imgf000006_0002
Figure imgf000007_0001
Tables B & C illustrate the ability of the transfer materials to evaporate a set amount of the fragranced liquid. Table B illustrates that each transfer material was loaded with a substantially identical amount of fragranced liquid (0.29g 0.045g) and Table C records the weight loss over time. Fig. 4 shows the graphical output of the results of Table C to illustrate the evaporation rate produced by the transfer materials. Balsa demonstrates a significantly greater evaporation rate relative to the other transfer materials in which reed, cellulose and the polyethylene membrane perform similarly and cintered polyethylene illustrates the lowest evaporation rate.
To determine the efficacy of a transfer material it is also useful to determine the saturation point of the material, that is the point at which it can no longer uptake any further liquid and also the evaporation rate from the point of saturation. Table D shows the saturation point with the fragranced liquid for each of the transfer materials and also expresses the saturation point as a weight % relative to the dry weight of the transfer material.
Figure imgf000008_0001
Figure imgf000009_0001
Figure imgf000009_0002
Table E records the weight loss over time for each transfer material from the point of saturation with the fragranced liquid. Fig. 5 shows the graphical output of the results of Table C to illustrate the evaporation rate produced by the transfer materials. Balsa clearly demonstrates a significantly greater evaporation rate relative to the other transfer materials. The plastics transfer materials all perform broadly similar with cintered polyethylene having the highest evaporation rate of these 3 materials, and the notably poorest evaporation rate is provided by reed.
Accordingly the foregoing experimental results show that balsa is an unexpectedly high performing transfer material across a broad spectrum of circumstances due to high wicking performance, an ability to absorb large quantities of liquid relative to its weight and. surprisingly, being capable of evaporation of liquids at a surprisingly high rate of evaporation regardless of the amount of liquid loading (partial or saturated) undertaken by the balsa transfer material.
All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and/or all of the steps of any method or process so disclosed, may be combined in any combination, except combinations where at least some of such features and/or steps are mutually exclusive.
Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise. Thus, unless expressly stated otherwise, each feature disclosed is one example only of a generic series of equivalent or similar features.
The invention is not restricted to the details of the foregoing embodiment{s). The invention extends to any novel one, or any novel combination, of the features disclosed in this specification (including any accompanying claims, abstract and drawings), or to any novel one, or any novel combination, of the steps of any method or process so disclosed.

Claims

Claims
1. A transfer material for transferring and evaporating a volatile liquid containing one or more active materials wherein the active material comprises at least one of: a fragrance; an insecticide, a fungicide, a pesticide: a sanitizing material; and/or a pharmaceutical; and wherein the transfer material comprises dried balsa wood from the plant species Ochroma Pyramidale.
2. An emanation device comprising:
a reservoir for containing a volatile liquid containing one or more active materials wherein the active material comprises at least one of: a fragrance; an insecticide; a fungicide; a pesticide: a sanitizing material; and/or a pharmaceutical; and
a transfer material having one end disposed within the reservoir to, in use, be in fluid communication with the volatile liquid and having the other end exposed outside of the reservoir wherein the transfer material comprises dried balsa wood from the plant species Ochroma Pyramidale.
3. An emanation device according to claim 2, wherein the device further comprises a separate emanation surface wherein, in use, the balsa wood transfer material is arranged to transfer the liquid from the reservoir to the emanation surface without substantial emanation of the liquid from said transfer material.
4. An emanation device comprising:
a reservoir for containing a volatile liquid containing one or more active materials wherein the active material comprises at least one of: a fragrance; an insecticide; a fungicide; a pesticide; a sanitizing material; and/or a pharmaceutical; and
a liquid conduit for transporting volatile liquid from the reservoir to a transfer material for emanation therefrom, wherein the transfer material comprises dried balsa wood from the plant species Ochroma Pyramidale.
5. An emanation device according to claim 4, wherein the liquid conduit is arranged, in use, to provide volatile liquid to the transfer material on an intermittent basis.
6. A method of disseminating a volatile liquid containing one or more active materials wherein the active material comprises at least one of: a fragrance; an insecticide: a fungicide; a pesticide; a sanitizing material; and/or a pharmaceutical; from a reservoir of said volatile liquid into the surrounding atmosphere comprising transferring and evaporating said volatile liquid with a transfer material comprising dried balsa wood from the plant species Ochroma Pyramidale.
7. A transfer material, emanation device or method according to any preceding ciaim, wherein the transfer material is shaped to give rods or sheets of regular cross-section.
8. A transfer material, emanation device or method according to any of claims 1-6, wherein the transfer material is molded into a curved shape.
9. A transfer material, emanation device or method according to any preceding claim, wherein the transfer material is formed into appropriate sizes and shapes suitable for emanation surfaces having cross-sections with an area of 10mm2 - 500mm2, and preferably 25mm2 - 400mm2, and more preferably 50mm2 - 300mm2 and most preferably 50mm2 - 250mm2.
10. A transfer material, emanation device or method according to any preceding claim, wherein the transfer material is formed into appropriate sizes and shapes suitable for emanation surfaces having lengths of 1cm - 150cm, and preferably 5cm - 100cm. and more preferably 10cm - 50cm, and even most preferably 10cm - 25cm.
11. A transfer material, emanation device or method according to any preceding claim, wherein the transfer material is formed into appropriate sizes and shapes suitable for emanation surfaces having widths of 1mm - 500mm, and preferably 2mm - 200mm, and more preferably 3mm - 100mm, and even most preferably 5mm - 50mm.
12. A transfer material, emanation device or method according to any preceding claim, wherein the transfer material is elongate, and the elongate aspect of the transfer material is substantially co-axial with the grain of the balsa wood.
13. A transfer material, emanation device or method according to any preceding claim, wherein the transfer material is provided with one or more apertures therein and/or therethrough.
PCT/GB2011/050661 2010-03-31 2011-03-31 Volatile liquid transfer materials comprising balsa wood WO2011121360A1 (en)

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GB1005407.0 2010-03-31
GB1005407A GB2479168A (en) 2010-03-31 2010-03-31 Volatile liquid transfer materials comprising dried balsa wood from Ochroma Pyramidale

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016005646A1 (en) * 2014-07-11 2016-01-14 Zobele España, S.A. Wick for volatile substance-evaporators
ES2590219A1 (en) * 2015-05-18 2016-11-18 Zobele Holding S.P.A. Element of evaporation of volatile substances (Machine-translation by Google Translate, not legally binding)
US10722604B2 (en) 2015-05-18 2020-07-28 Zobele Holding S.P.A. Device for releasing volatile substances

Citations (3)

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