WO1984004459A1 - Porous clay pottery container with volatile fluid - Google Patents

Porous clay pottery container with volatile fluid Download PDF

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Publication number
WO1984004459A1
WO1984004459A1 PCT/AU1984/000087 AU8400087W WO8404459A1 WO 1984004459 A1 WO1984004459 A1 WO 1984004459A1 AU 8400087 W AU8400087 W AU 8400087W WO 8404459 A1 WO8404459 A1 WO 8404459A1
Authority
WO
WIPO (PCT)
Prior art keywords
container
clay
pottery
wall
active fluid
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/AU1984/000087
Other languages
French (fr)
Inventor
Les Alacs
Zoltan Szabo
Zsuzsanna Nagy
Anna Ildiko Alacs
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AU29656/84A priority Critical patent/AU2965684A/en
Publication of WO1984004459A1 publication Critical patent/WO1984004459A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • A61L9/04—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone using substances evaporated in the air without heating
    • A61L9/046—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 non-organic compound
    • 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

Definitions

  • the present invention relates to containers.
  • hollow containers of clay or similar material.
  • hollow containers are often formed from stoneware clay or other clay, by hand.
  • the containers are normally small in size but they can be made to any desired size or shape.
  • the formed clay containers are dried in known manner using methods which are well known in the pottery art.
  • the firing is, in accordance with the present invention, arranged so that the pottery has a required capillarity. If the pottery is fired at a temperature which is too high then it becomes impermeable to vapour. On the other than, if the pottery is fired at a temperature which is too low then it may be excessively porous.
  • a hollow clay pottery container having an opening, wherein the hollow clay pottery container has an outer wall, contains a quantity of active fluid, the opening is sealed, the clay pottery of the container has been fired at a temperature below the vitrification point of the clay so that the clay pottery is permeable to vapour emitted from the active fluid and the container is arranged so that the vapour can permeate through the outer wall thereof.
  • the active fluid used in the present invention is usually a liquid.
  • the active fluid can take many forms but it is particularly envisaged that it will be a fragrance or an insect repellant.
  • the active fluid may be an essential oil but it would be possible to use an artificial synthetic fragrance.
  • the fragrance is oil based but it could have an aqueous base and be thickened with a suitable material such as paraffin oil and talc powder.
  • a wide range of clays can be used in the present invention. " The vitrification point of clays varies considerably.
  • pocelain has a vitrification point of about 1260° - 1500 ⁇ C
  • stoneware clay has a vitrification point of about 1350°C but this can be as low as 1100 ⁇ C for some stoneware clays
  • earthenware clay has a vitrification point which is usually around 950° - 1100°C depending on the type of clay.
  • the firing temperature needs to be below the vitrification point such as less than 100°C below this point preferably between 10 and 50 ⁇ C below this point. If the firing temperature is too low, then the container is too porous and liquid can escape. Also, the preferred firing temperature varies with the viscosity of the active fluid.
  • a container containing lemon essential oil i preferably has a firing temperature of 1280°C in a stone ⁇ ware clay having a vitrification point of 1300 ⁇ C, whereas in the same clay a rose essential oil containing container preferably has a firing temperature of 1260°C. 5 - This is because the rose essential oil is more viscous than the lemon essential oil.
  • the lower firing temperature leads to larger capillaries in the finished product.
  • the pottery container of the present invention contains capillaries through which vapour emitted from the active fluid can escape but not otherwise.
  • the rate of release of the vapour from the container is controlled by the degree of capillarity of the 20 pottery.
  • the container is liquid tight, although in hot weather the capillaries may open up a little and a small amount of liquid can seep out.
  • the container may be glazed externally for visual appeal but it is essential to leave some of the pottery 30 unglazed to avoid blocking all of the capillaries of the
  • the outer wall has a thickness in the range from 3 to 30 mm, more preferably in the range from 5 to 15 mm.
  • the product of the present invention may be used for deodorising rooms where it contains a fragrance, or in cupboards to repell silverfish and other insects where it contains insect repellant.
  • the container emits a vapour continuously over an extended period of time through the capillaries in the pottery.
  • a hollow clay pottery container 10 which is formed of stoneware clay and has an outer wall 12 and an opening 14. As shown, the opening 14 is closed by a plug 16 and a quantity of sealant 18 is applied around the opening 14 and the plug 16 to ensure that the opening 14 is sealed.
  • the outer wall 12 has a base portion 20 to enable the container to rest on a flat horizontal surface.
  • the stoneware clay of the outer wall 12 has been fired at a temperature less than 100 ⁇ C below the vitrification point of the clay so that it is permeable to vapours emitted from a quantity of fragrant essential oil or other active fluid 22 in the container 10.
  • a portion of the outer wall 12 may have a -A glazed layer 24 applied to it for decorative purposes. However, it is essential that a portion of the outer wall be unglazed to enable the vapour to permeate through the outer wall 12.
  • an upper portion of the wall 12 of the container 10 is glazed on its outer face while a lower portion and the base 20 is left unglazed.
  • a container 10 as shown in the drawing, with a wall thickness between 5 and 15 mm
  • the container 10 can emit vapour from the active fluid for a period of several months. Subsequently, the container 10 can be used as a decorative ornament.

Landscapes

  • 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)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)

Abstract

A hollow clay pottery container (10) having an opening (14) characterised in that the hollow clay pottery container (10) has an outer wall (12), contains a quantity of active fluid (22), the opening is sealed, the clay pottery of the container has been fired at a temperature below the vitrification point of the clay so that the clay pottery is permeable to vapour emitted from the active fluid (22) and the container (10) is arranged so that the vapour can permeate through the outer wall (12) thereof.

Description

TITLE
POROUS CLAY POTTERY CONTAINERWITHVOLATILE FLUID
DESCRIPTION The present invention relates to containers.
FIELD OF THE INVENTION
It is known to manufacture hollow containers of clay or similar material. In particular, hollow containers are often formed from stoneware clay or other clay, by hand.
The containers are normally small in size but they can be made to any desired size or shape. The formed clay containers are dried in known manner using methods which are well known in the pottery art.
Subsequently the dried articles are fired to turn them into articles of pottery.
SUMMARY OF THE INVENTION
The firing is, in accordance with the present invention, arranged so that the pottery has a required capillarity. If the pottery is fired at a temperature which is too high then it becomes impermeable to vapour. On the other than, if the pottery is fired at a temperature which is too low then it may be excessively porous. In accordance with one aspect of the present invention there is provided a hollow clay pottery container having an opening, wherein the hollow clay pottery container has an outer wall, contains a quantity of active fluid, the opening is sealed, the clay pottery of the container has been fired at a temperature below the vitrification point of the clay so that the clay pottery is permeable to vapour emitted from the active fluid and the container is arranged so that the vapour can permeate through the outer wall thereof.
DESCRIPTION OF THE INVENTION The active fluid used in the present invention is usually a liquid. Further, the active fluid can take many forms but it is particularly envisaged that it will be a fragrance or an insect repellant. In the case of a fragrance the active fluid may be an essential oil but it would be possible to use an artificial synthetic fragrance. Preferably, the fragrance is oil based but it could have an aqueous base and be thickened with a suitable material such as paraffin oil and talc powder. A wide range of clays can be used in the present invention. "The vitrification point of clays varies considerably. For example, pocelain has a vitrification point of about 1260° - 1500βC, stoneware clay has a vitrification point of about 1350°C but this can be as low as 1100βC for some stoneware clays, while earthenware clay has a vitrification point which is usually around 950° - 1100°C depending on the type of clay. The firing temperature needs to be below the vitrification point such as less than 100°C below this point preferably between 10 and 50βC below this point. If the firing temperature is too low, then the container is too porous and liquid can escape. Also, the preferred firing temperature varies with the viscosity of the active fluid. For example, a container containing lemon essential oil i preferably has a firing temperature of 1280°C in a stone¬ ware clay having a vitrification point of 1300βC, whereas in the same clay a rose essential oil containing container preferably has a firing temperature of 1260°C. 5 - This is because the rose essential oil is more viscous than the lemon essential oil. The lower firing temperature leads to larger capillaries in the finished product.
In the firing step, it is essential that the container 10 being fired reach the required temperature. It can be held at the temperature for as long as desired and this time is not critical. It can be, for example, up to five minutes or up to thirty minutes, or for any length of time which completes the desired processes. 15 The pottery container of the present invention contains capillaries through which vapour emitted from the active fluid can escape but not otherwise.
Thus, the rate of release of the vapour from the container is controlled by the degree of capillarity of the 20 pottery.
Essentially, the container is liquid tight, although in hot weather the capillaries may open up a little and a small amount of liquid can seep out.
Whilst a wide range of different pottery clays can be 25 used to manufacture the product of the present invention, it has been found that stoneware clay gives very satisfactory results.
The container may be glazed externally for visual appeal but it is essential to leave some of the pottery 30 unglazed to avoid blocking all of the capillaries of the
C PΪ pottery. Typically, the underside of the container and/or part of the side thereof is left unglazed. Preferably, the outer wall has a thickness in the range from 3 to 30 mm, more preferably in the range from 5 to 15 mm.
The product of the present invention may be used for deodorising rooms where it contains a fragrance, or in cupboards to repell silverfish and other insects where it contains insect repellant. The container emits a vapour continuously over an extended period of time through the capillaries in the pottery. The present invention will now be described, by way of example, with reference to the accompanying drawing which is a vertical sectional view of a hollow clay pottery container in accordance with the present invention.
In the drawing, there is shown a hollow clay pottery container 10 which is formed of stoneware clay and has an outer wall 12 and an opening 14. As shown, the opening 14 is closed by a plug 16 and a quantity of sealant 18 is applied around the opening 14 and the plug 16 to ensure that the opening 14 is sealed. The outer wall 12 has a base portion 20 to enable the container to rest on a flat horizontal surface. Further, the stoneware clay of the outer wall 12 has been fired at a temperature less than 100βC below the vitrification point of the clay so that it is permeable to vapours emitted from a quantity of fragrant essential oil or other active fluid 22 in the container 10. Further, a portion of the outer wall 12 may have a -A glazed layer 24 applied to it for decorative purposes. However, it is essential that a portion of the outer wall be unglazed to enable the vapour to permeate through the outer wall 12.
5 In the embodiment shown an upper portion of the wall 12 of the container 10 is glazed on its outer face while a lower portion and the base 20 is left unglazed. In use, it is found that a container 10, as shown in the drawing, with a wall thickness between 5 and 15 mm
10 can emit vapour from the active fluid for a period of several months. Subsequently, the container 10 can be used as a decorative ornament.
Modifications and variations such as would be apparent to a skilled addressee are deemed within the scope of
15 the present invention.

Claims

1. A hollow clay pottery container having an opening, characterised in that the hollow clay pottery container has an outer wall, contains a quantity of active fluid, the opening is sealed, the clay pottery of the container has been fired at a temperature below the vitrification point of the clay so that the clay potter is permeable to vapour emitted from the active fluid and the con¬ tainer is arranged so that the vapour can permeate through the outer wall thereof.
2. A container according to claim 1 characterised in that the active fluid is a fragrance.
3. A container according to claim 1 or 2, characterised in that the active fluid is a liquid.
4. A container according to claim 3, characterised in that the active fluid is an essential oil.
5. A container according to any one of the preceding claims, characterised in that the clay pottery of the container has been fired at a temperature less than 100βC below the vitrification point of the clay.
6. A container according to claim 5, characterised in that the clay pottery of the container has been fired at a temperature between 10 and 50°C below the vitrification point of the clay.
7. A container according to any one of the preceding claims, characterised in that it is formed of stoneware clay.
8. A container according to any one of the preceding claims, characterised in that the outer wall has a thickness in the range from 3 to 30 mm.
9. A container according to claim 8, characterised in that the outer wall has a thickness in the range from 5 to 15mm.
Figure imgf000009_0001
PCT/AU1984/000087 1983-05-18 1984-05-17 Porous clay pottery container with volatile fluid Ceased WO1984004459A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU29656/84A AU2965684A (en) 1983-05-18 1984-05-17 Containers

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU940083 1983-05-18
AU112183 1983-08-30

Publications (1)

Publication Number Publication Date
WO1984004459A1 true WO1984004459A1 (en) 1984-11-22

Family

ID=25608997

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1984/000087 Ceased WO1984004459A1 (en) 1983-05-18 1984-05-17 Porous clay pottery container with volatile fluid

Country Status (2)

Country Link
EP (1) EP0173687A1 (en)
WO (1) WO1984004459A1 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0218891A3 (en) * 1985-10-15 1988-07-13 Union Camp Corporation Device for dispensing volatile substances
US5299736A (en) * 1993-05-17 1994-04-05 John Greene Air freshener device with a ceramic container and an absorbent pad
GB2292083A (en) * 1994-08-10 1996-02-14 John Clifford Foxlee Enhancement of air-modifier gel performance
WO1997006121A1 (en) * 1995-08-04 1997-02-20 Jennings, Norman, T. Compositions and method for controlling odor in organic waste material
FR2833845A1 (en) * 2001-12-21 2003-06-27 Jean Claude Roger Perfume diffuser comprises porous article of dried or baked clay impregnated with perfume
EP2363153A1 (en) * 2009-10-02 2011-09-07 Takasago International Corporation Dual functioning fragrance delivery device
US9272065B2 (en) 2009-10-02 2016-03-01 Takasago International Corporation Volatile medium delivery device
KR101859108B1 (en) 2016-10-10 2018-05-21 주식회사 단향 Terracotta fragrance pottery
KR20230033804A (en) * 2021-09-02 2023-03-09 김정학 Diffuser

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022248114A1 (en) * 2021-05-25 2022-12-01 Itt Italia S.R.L. A method and a device for estimating residual torque between the braked and braking elements of a vehicle

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU3332771A (en) * 1970-09-15 1973-03-15 Nv. Philips' Gloeilampenfabrieken a DEVICE FORTHE CONTROLLED EMISSION OF VAPOUR
AU5712873A (en) * 1972-06-26 1975-01-09 Sc. Johnson & Son, Inc S. c. johnson & son, inc
AU1948576A (en) * 1975-11-13 1978-05-18 Reckitt & Colmann Prod Ltd Dispensing device
GB1570608A (en) * 1977-06-29 1980-07-02 Doulton Ind Products Ltd Ceramic articles
AU1904683A (en) * 1983-09-12 1985-03-21 Delaire, Inc. A vapor dispersing device and process

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU3332771A (en) * 1970-09-15 1973-03-15 Nv. Philips' Gloeilampenfabrieken a DEVICE FORTHE CONTROLLED EMISSION OF VAPOUR
AU5712873A (en) * 1972-06-26 1975-01-09 Sc. Johnson & Son, Inc S. c. johnson & son, inc
AU1948576A (en) * 1975-11-13 1978-05-18 Reckitt & Colmann Prod Ltd Dispensing device
GB1570608A (en) * 1977-06-29 1980-07-02 Doulton Ind Products Ltd Ceramic articles
AU1904683A (en) * 1983-09-12 1985-03-21 Delaire, Inc. A vapor dispersing device and process

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0218891A3 (en) * 1985-10-15 1988-07-13 Union Camp Corporation Device for dispensing volatile substances
US5299736A (en) * 1993-05-17 1994-04-05 John Greene Air freshener device with a ceramic container and an absorbent pad
WO1994026319A1 (en) * 1993-05-17 1994-11-24 John Greene Air freshener device with ceramic container and absorbent pad
GB2292083A (en) * 1994-08-10 1996-02-14 John Clifford Foxlee Enhancement of air-modifier gel performance
WO1997006121A1 (en) * 1995-08-04 1997-02-20 Jennings, Norman, T. Compositions and method for controlling odor in organic waste material
FR2833845A1 (en) * 2001-12-21 2003-06-27 Jean Claude Roger Perfume diffuser comprises porous article of dried or baked clay impregnated with perfume
EP2363153A1 (en) * 2009-10-02 2011-09-07 Takasago International Corporation Dual functioning fragrance delivery device
EP2545942A1 (en) * 2009-10-02 2013-01-16 Takasago International Corporation Dual functioning fragrance delivery device
US8695891B2 (en) 2009-10-02 2014-04-15 Takasago International Corporation Dual functioning fragrance delivery device
US9272065B2 (en) 2009-10-02 2016-03-01 Takasago International Corporation Volatile medium delivery device
US9393335B2 (en) 2009-10-02 2016-07-19 Takasago International Corporation Volatile medium delivery device
KR101859108B1 (en) 2016-10-10 2018-05-21 주식회사 단향 Terracotta fragrance pottery
KR20230033804A (en) * 2021-09-02 2023-03-09 김정학 Diffuser

Also Published As

Publication number Publication date
EP0173687A1 (en) 1986-03-12

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