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WO2000021879A1 - Generateurs de bioxyde de chlore - Google Patents

Generateurs de bioxyde de chlore Download PDF

Info

Publication number
WO2000021879A1
WO2000021879A1 PCT/ZA1999/000108 ZA9900108W WO0021879A1 WO 2000021879 A1 WO2000021879 A1 WO 2000021879A1 ZA 9900108 W ZA9900108 W ZA 9900108W WO 0021879 A1 WO0021879 A1 WO 0021879A1
Authority
WO
WIPO (PCT)
Prior art keywords
chlorine dioxide
coating
dioxide generator
dispersed
generator
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/ZA1999/000108
Other languages
English (en)
Inventor
Dennis Charles Clemes
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 AU64353/99A priority Critical patent/AU6435399A/en
Publication of WO2000021879A1 publication Critical patent/WO2000021879A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B11/00—Oxides or oxyacids of halogens; Salts thereof
    • C01B11/02—Oxides of chlorine
    • C01B11/022—Chlorine dioxide (ClO2)
    • C01B11/023—Preparation from chlorites or chlorates
    • C01B11/024—Preparation from chlorites or chlorates from chlorites
    • 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
    • A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23B—PRESERVATION OF FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES; CHEMICAL RIPENING OF FRUIT OR VEGETABLES
    • A23B2/00—Preservation of foods or foodstuffs, in general
    • A23B2/70—Preservation of foods or foodstuffs, in general by treatment with chemicals
    • A23B2/704—Preservation of foods or foodstuffs, in general by treatment with chemicals in the form of gases, e.g. fumigation; Compositions or apparatus therefor
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23B—PRESERVATION OF FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES; CHEMICAL RIPENING OF FRUIT OR VEGETABLES
    • A23B2/00—Preservation of foods or foodstuffs, in general
    • A23B2/70—Preservation of foods or foodstuffs, in general by treatment with chemicals
    • A23B2/704—Preservation of foods or foodstuffs, in general by treatment with chemicals in the form of gases, e.g. fumigation; Compositions or apparatus therefor
    • A23B2/721—Preservation of foods or foodstuffs, in general by treatment with chemicals in the form of gases, e.g. fumigation; Compositions or apparatus therefor in a controlled atmosphere comprising other gases in addition to CO2, N2, O2 or H2O
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23B—PRESERVATION OF FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES; CHEMICAL RIPENING OF FRUIT OR VEGETABLES
    • A23B7/00—Preservation of fruit or vegetables; Chemical ripening of fruit or vegetables
    • A23B7/14—Preserving or ripening with chemicals not covered by group A23B7/08 or A23B7/10
    • A23B7/144—Preserving or ripening with chemicals not covered by group A23B7/08 or A23B7/10 in the form of gases, e.g. fumigation; Compositions or apparatus therefor
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23B—PRESERVATION OF FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES; CHEMICAL RIPENING OF FRUIT OR VEGETABLES
    • A23B7/00—Preservation of fruit or vegetables; Chemical ripening of fruit or vegetables
    • A23B7/14—Preserving or ripening with chemicals not covered by group A23B7/08 or A23B7/10
    • A23B7/144—Preserving or ripening with chemicals not covered by group A23B7/08 or A23B7/10 in the form of gases, e.g. fumigation; Compositions or apparatus therefor
    • A23B7/152—Preserving or ripening with chemicals not covered by group A23B7/08 or A23B7/10 in the form of gases, e.g. fumigation; Compositions or apparatus therefor in a controlled atmosphere comprising other gases in addition to CO2, N2, O2 or H2O ; Elimination of such other gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/24—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants
    • B65D81/28—Applications of food preservatives, fungicides, pesticides or animal repellants
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B11/00—Oxides or oxyacids of halogens; Salts thereof
    • C01B11/02—Oxides of chlorine
    • C01B11/022—Chlorine dioxide (ClO2)
    • C01B11/023—Preparation from chlorites or chlorates

Definitions

  • THIS INVENTION relates to chlorine dioxide generators.
  • chlorine dioxide generator which comprises a sheet having a coating on at least one
  • the coating having a material dispersed therein which, in the presence
  • Chlorine dioxide is better tolerated by the fruit and also importantly the
  • An inert filler can be dispersed in said coating, and said filler can be
  • talc barytes, kaolin or diatomaceous earth or a mixture of these. ln the preferred form said material is sodium chlorite or sodium
  • Said coating can further includes a material which, in the presence of
  • a microcrystalline wax or a synthetic resin can serve as a binder in
  • said coating comprises a layer of laminating
  • the surface of the first mentioned sheet remote from said layer may
  • FIG. 2 is a diagrammatic section through part of a two stage chlorine
  • FIG. 3 illustrates one method of producing the chlorine dioxide generator of
  • the chlorine dioxide generator is generally
  • referenced 10 comprises a sheet 12 of paper or synthetic plastics material.
  • the sheet 12 has a coating 14 thereon.
  • the coating 14 comprises a binder which can be
  • a wax such as a microcrystalline wax or a synthetic resin such as a polyvinyl acetate
  • a material which, in the
  • Such material can be sodium
  • chlorite or sodium chlorate mixed with at least one suitable organic acid and/or at least one
  • a suitable acid is fumeric acid and a suitable acid hydride is
  • the coating 14 also incorporates an inert filler. Suitable inert fillers are
  • talc talc, barytes, kaolin and diatomaceous earth or mixtures of these.
  • Sodium bicarbonate can be added to the coating 14 thereby
  • microcrystalline wax is used as the binder then it can be applied by
  • the coating can be applied by a conventional coating and drying
  • the inert filler induces a slower, and therefore longer in terms of time
  • the generator illustrated in Figure 2 is generally designated 16 and
  • the substance 22 can incorporate the constituents
  • the sheets 18 and 20 be of any synthetic plastics
  • substance 22 and permit chlorine dioxide (and carbon dioxide if generated) to pass through it to atmosphere.
  • Suitable materials are polyester, polypropylene and
  • Reference numerals 14.1 and 14.2 designate coatings which are on
  • chlorine dioxide commences after a short delay.
  • the filler can be omitted from the substance 22 to promote more rapid
  • reference numerals 24 designate two
  • heated rollers and reference numerals 26 two rolls of synthetic plastics material in
  • the webs are fed through the nip between the rollers 24 and the
  • laminating substance 22 is between the two webs.
  • the width of the nip between the rollers 24 determines what thickness of laminating substance can pass between the
  • rollers 24 with the synthetic plastics material.
  • the laminate After lamination has taken place the laminate can be needle punched,
  • the sheets 18 and 20 can both be transparent, can both be pigmented
  • An alternative method of production comprises feeding one of the
  • one surface of the web a layer of laminating substance of the requisite thickness.
  • adhesive to labels is employed to apply the laminating substance.
  • a coating head including a slit through which the laminating substance is
  • the laminating substance can be a wax, such as a paraffin wax, with said material dispersed in it.
  • a wax such as a paraffin wax
  • adhesive can have said material dispersed in it prior to being applied to said sheets.
  • Polyester is a suitable material for the sheets 18 and 20 as it does not
  • polypropylene or polyethylene can be used. For example, if a
  • contact adhesive is used as a laminating substance, and this is applied cold, then
  • cellulose, cellulose acetate and regenerated cellulose foil can be laminated to form a
  • 14.2 can be applied before or after the sheets are laminated to one another.
  • the generator overlies the grapes and effectively divides the
  • the gas concentration can be higher in the upper compartment than in the lower compartment.
  • holes eg holes with a 5mm diameter
  • the sheet described above can, when placed in the fruit box, be
  • sheet comprises a non-woven synthetic plastics material.
  • Polypropylene is a

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Food Science & Technology (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Organic Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Pest Control & Pesticides (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Agronomy & Crop Science (AREA)
  • Plant Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Environmental Sciences (AREA)
  • Laminated Bodies (AREA)

Abstract

La présente invention concerne un générateur de bioxyde de chlore comprenant une feuille enduite d'un revêtement dans lequel est dispersé un matériau qui, en présence d'humidité, libère du bioxyde de chlore. Dans un mode de réalisation, ce revêtement est appliqué sur une surface d'une seule feuille. Dans un autre mode de réalisation, ce revêtement est appliqué entre deux feuilles qu'il colle l'une à l'autre. La première et/ou la seconde feuille peuvent contenir un second revêtement sur la face éloignée du revêtement collant les feuilles ensemble.
PCT/ZA1999/000108 1998-10-09 1999-10-08 Generateurs de bioxyde de chlore Ceased WO2000021879A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU64353/99A AU6435399A (en) 1998-10-09 1999-10-08 Chlorine dioxide generators

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
ZA989220 1998-10-09
ZA98/9220 1998-10-09
ZA993228 1999-05-11
ZA99/3228 1999-05-11

Publications (1)

Publication Number Publication Date
WO2000021879A1 true WO2000021879A1 (fr) 2000-04-20

Family

ID=27144982

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ZA1999/000108 Ceased WO2000021879A1 (fr) 1998-10-09 1999-10-08 Generateurs de bioxyde de chlore

Country Status (2)

Country Link
AU (1) AU6435399A (fr)
WO (1) WO2000021879A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003020326A1 (fr) * 2001-08-28 2003-03-13 Ecolab Inc. Procedes, dispositifs et compositions pour la liberation prolongee du bioxyde de chlore
US6602466B2 (en) 2000-02-18 2003-08-05 Selective Micro Technologies, Llc Apparatus and method for controlled delivery of a gas
US6607696B1 (en) 2000-02-18 2003-08-19 Selective Micro Technologies, Llc Apparatus and method for controlled delivery of a gas
JP2017530936A (ja) * 2014-07-01 2017-10-19 アドヴァ・バー−オンＡｄｖａ ＢＡＲ−ＯＮ 二酸化塩素を放出するためのシステムおよび方法
WO2019058803A1 (fr) * 2017-09-25 2019-03-28 株式会社ユー・イー・エス Feuille
US12036525B2 (en) 2020-10-27 2024-07-16 Selective Micro Technologies, Llc Gas micro reactor utilizing membrane packaging

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2131740A (en) * 1982-12-03 1984-06-27 Multifoil Pty Ltd Packaging material
US4748904A (en) * 1986-07-01 1988-06-07 Razeto Andres V R Chlorine generator for preservation of fruits and vegetables
EP0571228A2 (fr) * 1992-05-21 1993-11-24 Dennis Charles Clemes Générateur d'anhydride sulfureux pour utilisation dans l'industrie de fruits
US5705092A (en) * 1995-06-05 1998-01-06 Southwest Research Institute Multilayered biocidal film compositions
WO1998011776A1 (fr) * 1996-09-18 1998-03-26 Bernard Technologies, Inc. Poudres assurant la liberation prolongee et regulee d'un gaz

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2131740A (en) * 1982-12-03 1984-06-27 Multifoil Pty Ltd Packaging material
US4748904A (en) * 1986-07-01 1988-06-07 Razeto Andres V R Chlorine generator for preservation of fruits and vegetables
EP0571228A2 (fr) * 1992-05-21 1993-11-24 Dennis Charles Clemes Générateur d'anhydride sulfureux pour utilisation dans l'industrie de fruits
US5705092A (en) * 1995-06-05 1998-01-06 Southwest Research Institute Multilayered biocidal film compositions
WO1998011776A1 (fr) * 1996-09-18 1998-03-26 Bernard Technologies, Inc. Poudres assurant la liberation prolongee et regulee d'un gaz

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6602466B2 (en) 2000-02-18 2003-08-05 Selective Micro Technologies, Llc Apparatus and method for controlled delivery of a gas
US6607696B1 (en) 2000-02-18 2003-08-19 Selective Micro Technologies, Llc Apparatus and method for controlled delivery of a gas
WO2003020326A1 (fr) * 2001-08-28 2003-03-13 Ecolab Inc. Procedes, dispositifs et compositions pour la liberation prolongee du bioxyde de chlore
JP2017530936A (ja) * 2014-07-01 2017-10-19 アドヴァ・バー−オンＡｄｖａ ＢＡＲ−ＯＮ 二酸化塩素を放出するためのシステムおよび方法
EP3164359A4 (fr) * 2014-07-01 2018-01-03 Adva Bar-On Systèmes et procédés permettant la libération de dioxyde de chlore
WO2019058803A1 (fr) * 2017-09-25 2019-03-28 株式会社ユー・イー・エス Feuille
JP2019059630A (ja) * 2017-09-25 2019-04-18 株式会社大阪ソーダ シート
US12036525B2 (en) 2020-10-27 2024-07-16 Selective Micro Technologies, Llc Gas micro reactor utilizing membrane packaging

Also Published As

Publication number Publication date
AU6435399A (en) 2000-05-01

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