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WO2003028977A1 - Film, et procede de formage en vue de la production controlee in-situ de so2 gazeux - Google Patents

Film, et procede de formage en vue de la production controlee in-situ de so2 gazeux Download PDF

Info

Publication number
WO2003028977A1
WO2003028977A1 PCT/US2002/031553 US0231553W WO03028977A1 WO 2003028977 A1 WO2003028977 A1 WO 2003028977A1 US 0231553 W US0231553 W US 0231553W WO 03028977 A1 WO03028977 A1 WO 03028977A1
Authority
WO
WIPO (PCT)
Prior art keywords
layers
film
polymers
acid
anhydride
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/US2002/031553
Other languages
English (en)
Inventor
Ihab M. Hekal
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
Publication of WO2003028977A1 publication Critical patent/WO2003028977A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/08—Copolymers of ethylene
    • B29K2023/083—EVA, i.e. ethylene vinyl acetate copolymer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/10—Polymers of propylene
    • B29K2023/12—PP, i.e. polypropylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0065—Permeability to gases
    • B29K2995/0067—Permeability to gases non-permeable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2009/00—Layered products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/15—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state
    • B32B37/153—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state at least one layer is extruded and immediately laminated while in semi-molten state
    • 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
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/30—Containers, packaging elements or packages, specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure
    • B65D85/34—Containers, packaging elements or packages, specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure for fruit, e.g. apples, oranges or tomatoes

Definitions

  • a first layer may be comprised of, for example, polyethylene or polypropylene, or similar plastic.
  • a second layer, sheet or film is comprised of reactive material which, in the presence of moisture can emit a Food and Drug Administration (FDA) approval, non-oxidizing gas that has mold inhibiting and deoxidizing properties.
  • FDA Food and Drug Administration
  • the gas is particularly not chlorine or chlorine dioxide because those gases are oxidizing gases.
  • the material is useful for packaging foods such a fruits, vegetables, dairy and bakery products, and other products susceptible to mold, to increase such products traveling and shelf life.
  • the concentration of the gas emitted from this material into a food package need only be approximately 1-100 parts per million, but may be more. If the package is substantially closed, the accumulated gas will readily dissipate when the package is opened. If desired, the package may contain perforations so that it will "breathe"; in such a case, the gas emission rate can be simply increased to compensate for the leakage of gas through the perforations .
  • the material can be used, for example, to wrap pallets of fruit, or may be converted into bags to hold grapes and the like, or may be used as a cover or wrap for baskets of fruit or berries, etc.
  • the material can be extruded in thicker layers, sheets or films and formed into small pad-like members to be inserted into the conventional absorbent pads that are commonly used on the bottom of plastic baskets, or "clam shells," or wrapped meat products and the like, all without changing existing packaging techniques.
  • the invention is primarily comprised of a method for producing a film for emitting sulfur dioxide, and the film produced thereby, wherein the method comprises the steps of simultaneously extruding a plurality of layers of polymers, wherein a first one of the layers contains a mixture comprised of sodium metabisulfite, sodium bisulfite or sodium sulfite in a powder dispersion, a second one of the layers containing a dispersion of an acid or an acid anhydride.
  • one form of the invention is based upon the slow emission of sulfur dioxide (S0 2 ) which can be created by reacting sodium metabisulfite (Na 2 S 2 0 5 ) or a derivative, e.g., with an acid or acid anhydride which, in the presence of water will produce
  • S0 2 sulfur dioxide
  • Na 2 S 2 0 5 sodium metabisulfite
  • an acid or acid anhydride which, in the presence of water will produce
  • a low melting temperature polymer such as low density polyethylene, or polyolefin, or vinyl acetate
  • concentrated mixtures of the constituents can be marketed in the form of additives which can be added to polymers during formation of the sheets, layers, films and/or pads and during injection molding so that the packages are active in inhibiting the growth of mold.
  • the layers, sheets, films or pads can be co-extruded in two or more layers to control the emission of S0 2 and to keep the S0 2 confined to the inside of the container and the outside layer, or film, would function as a barrier to preclude escape of the gas.
  • a thin third layer on the inside of the container or package would control the gas emission and control the ingress of moisture to the sodium metabisulfite and the acid mixture.
  • Compounds for producing S0 2 gas can be mixed with polymers including polyolefins, polystyrene, polyamides, polyamines, polyurethane, vinyls (PVC, PVA, PVOH, PEVOH, PVP, etc.), polylactic acid, polyglycols, polyethylene oxide, cellulose and derivatives (viscose (cellulose acetate, propionate, butyrate) , hydroxyethyl cellulose, hydroxypropyl methyl cellulose, etc.).
  • polymers including polyolefins, polystyrene, polyamides, polyamines, polyurethane, vinyls (PVC, PVA, PVOH, PEVOH, PVP, etc.), polylactic acid, polyglycols, polyethylene oxide, cellulose and derivatives (viscose (cellulose acetate, propionate, butyrate) , hydroxyethyl cellulose, hydroxypropyl methyl cellulose, etc.).
  • a small piece of the inventive sheet material on the order of 10-50 mils and, perhaps 1" x 1", or 2" x 2", can be placed inside the soft pad usually positioned at the bottom of the container for cushioning the product .
  • a variation of the foregoing would be forming the clam shell box from co-extruded plastics wherein the inside layer emits S0 2 gas and the outer layer provides a barrier against escaping gas.
  • a still further variation would be to wrap the small box of fruit with co-extruded film, the inside layer of which would emit the S0 2 gas.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Food Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Chemical & Material Sciences (AREA)
  • Polymers & Plastics (AREA)
  • Pest Control & Pesticides (AREA)
  • Laminated Bodies (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

L'invention porte sur un procédé de production de films émetteurs de SO2 et sur les films ainsi produits. Ledit procédé consiste: à extruder simultanément plusieurs couches de polymères, dont la première contient un mélange de bisulfite ou de sulfite de sodium dans une dispersion pulvérulente, et la deuxième, une dispersion d'un acide ou d'un anhydride d'acide.
PCT/US2002/031553 2001-10-03 2002-10-03 Film, et procede de formage en vue de la production controlee in-situ de so2 gazeux Ceased WO2003028977A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US32645701P 2001-10-03 2001-10-03
US60/326,457 2001-10-03

Publications (1)

Publication Number Publication Date
WO2003028977A1 true WO2003028977A1 (fr) 2003-04-10

Family

ID=23272297

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2002/031553 Ceased WO2003028977A1 (fr) 2001-10-03 2002-10-03 Film, et procede de formage en vue de la production controlee in-situ de so2 gazeux

Country Status (1)

Country Link
WO (1) WO2003028977A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004052109A1 (fr) * 2002-12-10 2004-06-24 Ace Three (Uk) Limited Revetements liberant du dioxyde de soufre
US6821590B2 (en) * 2003-02-14 2004-11-23 Monosol, Llc Starch-loaded polyvinyl alcohol copolymer film
EP1834761A1 (fr) * 2006-03-13 2007-09-19 Mondi Packaging AG Materiau d'emballage pour la conservation d'aliments
WO2008025085A1 (fr) * 2006-08-30 2008-03-06 Amcor Limited Matériau de conditionnement hydrophobe comprenant un sel de sulfite
US20090104442A1 (en) * 2007-10-17 2009-04-23 Intellipack Quimas S.A. Antimicrobial Gas Generating System

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3928577A (en) * 1970-04-07 1975-12-23 Alexandra Ivanovna Kochurova Preparation for preserving vegetable food products particularly fruits
US4128397A (en) * 1974-10-31 1978-12-05 Rentokil Limited Sulfur dioxide liberation compositions and methods of using same
US4490330A (en) * 1982-02-12 1984-12-25 Anchor Continental Inc. Sulphur dioxide-liberating, sterilizing composition and method of using same
WO1994010233A1 (fr) * 1992-10-30 1994-05-11 Commonwealth Scientific And Industrial Research Organisation Film liberant de l'anhydride sulfureux

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3928577A (en) * 1970-04-07 1975-12-23 Alexandra Ivanovna Kochurova Preparation for preserving vegetable food products particularly fruits
US4128397A (en) * 1974-10-31 1978-12-05 Rentokil Limited Sulfur dioxide liberation compositions and methods of using same
US4490330A (en) * 1982-02-12 1984-12-25 Anchor Continental Inc. Sulphur dioxide-liberating, sterilizing composition and method of using same
WO1994010233A1 (fr) * 1992-10-30 1994-05-11 Commonwealth Scientific And Industrial Research Organisation Film liberant de l'anhydride sulfureux

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004052109A1 (fr) * 2002-12-10 2004-06-24 Ace Three (Uk) Limited Revetements liberant du dioxyde de soufre
US6821590B2 (en) * 2003-02-14 2004-11-23 Monosol, Llc Starch-loaded polyvinyl alcohol copolymer film
EP1834761A1 (fr) * 2006-03-13 2007-09-19 Mondi Packaging AG Materiau d'emballage pour la conservation d'aliments
WO2008025085A1 (fr) * 2006-08-30 2008-03-06 Amcor Limited Matériau de conditionnement hydrophobe comprenant un sel de sulfite
US20090104442A1 (en) * 2007-10-17 2009-04-23 Intellipack Quimas S.A. Antimicrobial Gas Generating System
EP2207671A4 (fr) * 2007-10-17 2012-05-30 Intellipack Quimas S A Système de génération de gaz antimicrobien
US8932708B2 (en) 2007-10-17 2015-01-13 Intellipack Quimas S.A. Antimicrobial gas generating system

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