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WO2006117801A2 - Matériaux d'emballage - Google Patents

Matériaux d'emballage Download PDF

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Publication number
WO2006117801A2
WO2006117801A2 PCT/IN2006/000072 IN2006000072W WO2006117801A2 WO 2006117801 A2 WO2006117801 A2 WO 2006117801A2 IN 2006000072 W IN2006000072 W IN 2006000072W WO 2006117801 A2 WO2006117801 A2 WO 2006117801A2
Authority
WO
WIPO (PCT)
Prior art keywords
soluble
biodegradable
hydrophilic film
water soluble
substrate
Prior art date
Application number
PCT/IN2006/000072
Other languages
English (en)
Other versions
WO2006117801A3 (fr
WO2006117801B1 (fr
Inventor
Shilpan Pravinchandra Patel
Original Assignee
Shilpan Pravinchandra Patel
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 Shilpan Pravinchandra Patel filed Critical Shilpan Pravinchandra Patel
Priority to AU2006242781A priority Critical patent/AU2006242781A1/en
Publication of WO2006117801A2 publication Critical patent/WO2006117801A2/fr
Publication of WO2006117801A3 publication Critical patent/WO2006117801A3/fr
Publication of WO2006117801B1 publication Critical patent/WO2006117801B1/fr

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Classifications

    • 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
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • 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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • 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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B32B15/085—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyolefins
    • 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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/18—Layered products comprising a layer of metal comprising iron or steel
    • 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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
    • 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
    • B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
    • B32B21/02—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board the layer being formed of fibres, chips, or particles, e.g. MDF, HDF, OSB, chipboard, particle board, hardboard
    • 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
    • B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
    • B32B21/04—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B21/08—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • 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
    • B32B23/00—Layered products comprising a layer of cellulosic plastic substances, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B23/00—Layered products comprising a layer of cellulosic plastic substances, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose
    • B32B23/04—Layered products comprising a layer of cellulosic plastic substances, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose comprising such cellulosic plastic substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B23/042—Layered products comprising a layer of cellulosic plastic substances, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose comprising such cellulosic plastic substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of metal
    • 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
    • B32B23/00—Layered products comprising a layer of cellulosic plastic substances, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose
    • B32B23/04—Layered products comprising a layer of cellulosic plastic substances, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose comprising such cellulosic plastic substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B23/044—Layered products comprising a layer of cellulosic plastic substances, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose comprising such cellulosic plastic substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of wood
    • 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
    • B32B23/00—Layered products comprising a layer of cellulosic plastic substances, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose
    • B32B23/04—Layered products comprising a layer of cellulosic plastic substances, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose comprising such cellulosic plastic substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B23/06—Layered products comprising a layer of cellulosic plastic substances, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose comprising such cellulosic plastic substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
    • 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
    • B32B23/00—Layered products comprising a layer of cellulosic plastic substances, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose
    • B32B23/10—Layered products comprising a layer of cellulosic plastic substances, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose next to a fibrous or filamentary layer
    • 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
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/10—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
    • 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
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • 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
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/02—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising animal or vegetable substances, e.g. cork, bamboo, starch
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/06—Vegetal fibres
    • B32B2262/062—Cellulose fibres, e.g. cotton
    • 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
    • B32B2274/00—Thermoplastic elastomer material
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/54—Yield strength; Tensile strength
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/582—Tearability
    • B32B2307/5825—Tear resistant
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/716—Degradable
    • B32B2307/7163—Biodegradable
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/716—Degradable
    • B32B2307/7166—Water-soluble, water-dispersible
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/728—Hydrophilic
    • 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
    • B32B2439/00—Containers; Receptacles
    • B32B2439/02—Open containers
    • B32B2439/06—Bags, sacks, sachets
    • 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
    • B32B2439/00—Containers; Receptacles
    • B32B2439/40—Closed containers
    • B32B2439/46—Bags
    • 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
    • B32B2439/00—Containers; Receptacles
    • B32B2439/40—Closed containers
    • B32B2439/62—Boxes, cartons, cases
    • 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
    • B32B2439/00—Containers; Receptacles
    • B32B2439/70—Food packaging

Definitions

  • This invention relates to biodegradable multi-layered composite packaging materials and to methods for manufacturing the same.
  • biodegradable materials such as paper, jute or naturally corrosive and subsequently biodegradable metallic foils are laminated with non biodegradable petro-plastics to achieve properties like high strength, heat sealing and/or to control unwanted fibres, foreign particles or surface impurities to come in contact with the packed goods, particularly edible goods.
  • extrusion coating of polyethylene is done on paper to enable heat sealing during the process of packaging or manufacture of pouches and polyethylene lamination is done to Hessian or Jute fabric to ensure that no fibres or foreign particles get mixed with the packed edible material.
  • a disadvantage of these laminations is they turn the naturally biodegradable materials non degradable.
  • biodegradable substrates such as paper with biodegradable PLA (poly lactic acid) or PHA (polyhydroxy alkanoate) layers by processes such as coextrusion with an adhesive polymer to avoid delamination.
  • PLA poly lactic acid
  • PHA polyhydroxy alkanoate
  • the present invention provides a biodegradable multi-layered composite packaging material comprising of a biodegradable substrate layer and a biodegradable film uniformly well adhered at least on one side of the said substrate without using any adhesive.
  • a biodegradable multi-layered composite packaging material comprising of a biodegradable substrate layer and a biodegradable film uniformly well adhered at least on one side of the said substrate without using any adhesive.
  • Combining two biodegradable materials as per the invention can give better properties in strength, smoothness and biodegradability without sacrificing inherent properties of heat sealing and down stream conversion.
  • the end product will be a biodegradable multi-layered composite packaging material, which shall be beneficial to the society.
  • the invention has application to various types of substrates while retaining stretchability of the substrate and elasticity of the biodegradable water soluble/non soluble hydrophilic film and simultaneously enhancing the physical characteristics like tensile, tear, puncture resistance, burst factor, and breaking strength of the resulting biodegradable packaging- material.
  • the biodegradable substrate layer is preferably formed of biodegradable fibres, fabric, pulps like cotton, jute, hemp, baggasse, wood pulp.
  • the biodegradable substrate layer may be formed of naturally corrosive and subsequently bio-degradable metallic foils like aluminium foil, brass foil, copper foil, tin foil, steel foil and zinc foil.
  • the biodegradable film may be soluble in water, i.e. a water soluble film (WSF) or non soluble in water but swellable under moisture and biodegradable.
  • WSF water soluble film
  • the WSF may be cold water soluble, warm water soluble, or hot water soluble.
  • the biodegradable film may. be made of raw materials selected from Polyvinyl alcohol copolymer ionomers, Polyvinyl alcohol homopolymer, non - ionomeric poly vinyl alcohol polymer, Polymethacrylate, polyvinyl alchohol, polyacrylamide, polymethacrylamide, polyacrylic acid, polymethacrylic acid, polyurethane, polyethyleneglycol, polyvinylpyrrolidone, proteinaceous binders such as gelatin, modified gelatins such as phthaloyl gelatin, polysaccharides such as starch, gum Arabic, pullulan and dextrin and water-soluble cellulose derivatives such as methyl cellulose, hydroxy propyl cellulose, hydroxy propyl methyl cellulose, hydroxy propyl ethyl cellulose, hydroxy ethyl cellulose, carboxy methyl cellulose either alone or combinations thereof.
  • Polyvinyl alcohol copolymer ionomers Polyvinyl alcohol homopolymer, non -
  • the biodegradable film is alternatively a non soluble or non soluble partially hydrophilic film.
  • a partially hydrophilic film may be made out of non hydrophilic materials, wherein atleast one side may be cast with a water soluble film material and dried, to make the coated/cast side hydrophilic, to enable lamination with a biodegradable substrate with the aid of water and the term non soluble hydrophilic film is to be construed accordingly to include all of these i.e. a non soluble hydrophilic film and a non soluble partially hydrophilic film cast with a water soluble film material atleast on one side to make the coated/cast side hydrophilic.
  • the non soluble partially hydrophilic film is preferably made out of thermoplastic starch materials.
  • the water soluble film material may be selected from Polyvinyl alcohol copolymer ionomers, Polyvinyl alcohol homopolymer, non - ionomeric poly vinyl alcohol polymer, Polymethacrylate, polyvinyl alchohol, polyacrylamide, polymethacrylamide, polyacrylic acid, polymethacrylic acid, polyurethane, polyethyleneglycol, polyvinylpyrrolidone, proteinaceous binders such as gelatin, modified gelatins such as phthaloyl gelatin, polysaccharides such as starch, gum Arabic, pullulan and dextrin and water-soluble cellulose derivatives such as methyl cellulose, hydroxy propyl cellulose, hydroxy propyl methyl cellulose, hydroxy propyl ethyl cellulose, hydroxy ethyl cellulose, carboxy methyl cellulose either alone or combinations thereof.
  • biodegradable substrate and biodegradable film may be combined by layering, coating, impregnating or laminating resulting into a biodegradable multi-layered composite packaging material with enhanced characteristics like strength and biodegradability.
  • the present invention provides a method of manufacturing a biodegradable multi-layered composite packaging material comprising of the following steps:
  • the present invention provides a method of manufacturing a biodegradable multi-layered composite packaging material comprising of the following steps: (i) providing a hydrophilic biodegradable substrate and a preformed water soluble/non soluble hydrophilic film with a liner;
  • the present invention provides a method of manufacturing a biodegradable multi-layered composite packaging material comprising of the following steps: (i) casting a water soluble/non soluble hydrophilic film on a non porous biodegradable substrate at a primary casting head; (ii) drying the laminate of non porous biodegradable substrate with cast water soluble/non soluble hydrophilic film.
  • the present invention provides a method of manufacturing biodegradable multi-layered composite packaging material comprising of the following steps: (i) flat die extruding a desired thickness of water soluble/non soluble hydrophilic film directly onto a biodegradable substrate;
  • the biodegradable substrate may be selected from natural biodegradable substrates made from materials like bio-degradable fibres, fabric, pulps like cotton, jute, hemp, baggasse, wood pulp.
  • the biodegradable substrate may be selected from naturally corrosive and subsequently biodegradable metallic foils like aluminium foil, brass foil, copper foil, tin foil, steel foil and zinc foil.
  • the substrates are hydrophilic these may be made from materials such as biodegradable fibres, fabric, pulps like cotton, jute, hemp, baggasse, wood pulp and the like and, where the substrates are non-porous these may be made from non porous paper or naturally corrosive and subsequently biodegradable metallic foils like aluminium foil, brass foil, copper foil, tin foil, steel foil and zinc foil.
  • the biodegradable water soluble/non soluble hydrophilic film may be made of raw materials selected from Polyvinyl alcohol copolymer ionomers, Polyvinyl alcohol homopolymer, non - ionomeric poly vinyl alcohol polymer, Polymethacrylate, polyvinyl alchohol, polyacrylamide, polymethacrylamide, polyacrylic acid, polymethacrylic acid, polyurethane, polyethyleneglycol, polyvinylpyrrolidone, proteinaceous binders such as gelatin, modified gelatins such as phthaloyl gelatin, polysaccharides such as starch, gum Arabic, pullulan and dextrin and water-soluble cellulose derivatives such as methyl cellulose, hydroxy propyl cellulose, hydroxy propyl methyl cellulose, hydroxy propyl ethyl cellulose, hydroxy ethyl cellulose, carboxy methyl cellulose either alone or combinations thereof.
  • Polyvinyl alcohol copolymer ionomers Polyviny
  • the biodegradable film is alternatively a non soluble partially hydrophilic film made out of thermoplastic starch materials, wherein atleast one side is cast with a water soluble film material and dried, to make the cast side hydrophilic, to enable lamination with a biodegradable substrate with the aid of water and the term non soluble hydrophilic film is to be construed accordingly to include all of these i.e. a non soluble hydrophilic film and a non soluble partially hydrophilic film coated/cast with a water soluble material atleast on one side to make the coated/cast side hydrophilic.
  • the non soluble partially hydrophilic film is made out of thermoplastic starch materials.
  • the water soluble film material for casting on non soluble partially hydrophilic film may be selected from Polyvinyl alcohol copolymer ionomers, Polyvinyl alcohol homopolymer, non - ionomeric poly vinyl alcohol polymer, Polymethacrylate, polyvinyl alchohol, polyacrylamide, polymethacrylamide, polyacrylic acid, polymethacrylic acid, polyurethane, polyethyleneglycol, polyvinylpyrrolidone, proteinaceous binders such as gelatin, modified gelatins such as phthaloyl gelatin, polysaccharides such as starch, gum Arabic, pullulan and dextrin and water-soluble cellulose derivatives such as methyl cellulose, hydroxy propyl cellulose, hydroxy propyl methyl cellulose, hydroxy propyl ethyl cellulose, hydroxy ethyl cellulose, carboxy methyl cellulose either alone or combinations thereof.
  • Polyvinyl alcohol copolymer ionomers Polyvinyl alcohol homopol
  • Fig 1. is a schematic block diagram for method of manufacturing biodegradable multi-layered composites according to an embodiment of this invention
  • Fig 2. is a schematic block diagram for method of manufacturing biodegradable multi-layered composites according to another embodiment of this invention.
  • Fig 3. is a schematic block diagram for method of manufacturing biodegradable multi-layered composites according to a further embodiment of this invention.
  • Fig 4. is a schematic block diagram for method of manufacturing biodegradable multi-layered composites according to a further embodiment of this invention
  • the liner (1) is optionally treated or untreated and coated or uncoated.
  • the liner can be of paper, film, foil or fabric, preferably of film, more preferably of polyester film.
  • the film thickness ranges from 3 microns to 500 microns, preferably from 10 microns to 300 microns, more preferably from 25 microns to 100 microns.
  • the film liner may be plain, metallised, embossed, gloss, matt, extrusion coated, laminated or release coated depending on the desired characteristics of the end product. Paper liner is also used for production of WSF.
  • Paper liner that accept temperatures needed for the production of WSF and have thickness ranging from 7 GSM (grams per sq meter - the standard for measuring weight of paper) to 500 GSM, preferably from 20 GSM to 300 GSM, more preferably from 60 GSM to 180 GSM can be used.
  • the paper liner may be plain, embossed, gloss, matt, extrusion coated laminated or release coated depending on the desired characteristics of the end product. Fabrics made of cotton or synthetic yarns, solution coated, plain, embossed, gloss, matt, extrusion coated or laminated may be used as liner based on the desired end product properties. However, these liners are by no means limiting.
  • biodegradable substrate (3) on another unwinder (4) of the casting machine, wherein the said biodegradable substrate is selected from natural substrates made from bio-degradable fibres, fabric, pulps like cotton, jute, hemp, baggasse, wood pulp and naturally corrosive and subsequently bio-degradable metallic foils like aluminium foil, brass foil, copper foil, tin foil, steel foil and zinc foil.
  • bio-degradable materials are by no means limiting.
  • the raw materials used for making the water soluble/non soluble hydrophilic film are selected from Polyvinyl alcohol copolymer ionomers, Polyvinyl alcohol homopolymer, non - ionomeric poly vinyl alcohol polymer, Polymethacrylate, polyvinyl alchohol, polyacrylamide, polymethacrylamide, polyacrylic acid, polymethacrylic acid, polyurethane, polyethyleneglycol, polyvinylpyrrolidone, proteinaceous binders such as gelatin, modified gelatins such as phthaloyl gelatin, polysaccharides such as starch, gum Arabic, pullulan and dextrin and water-soluble cellulose derivatives such as methyl cellulose, hydroxy propyl cellulose, hydroxy propyl methyl cellulose, hydroxy propyl ethyl cellulose, hydroxy ethyl cellulose, carboxy methyl cellulose either alone or combinations thereof.
  • these raw materials are by no means limiting.
  • the water soluble films can be cold
  • step V Passing water soluble/non soluble hydrophilic film from the above step IV through an air blower section (7) with or without applying heat, for semi-drying.
  • the temperature in the blower section ranges from 10 0 C to 140 0 C, preferably from 30 0 C to 100 0 C, more preferably from 4O 0 C to 90 0 C.
  • the temperature in the blower section will be dependent upon the web speed.
  • the said hydrophilic biodegradable substrate is selected from natural substrates made from bio-degradable fibres, fabric, pulps like cotton, jute, hemp, baggasse, wood pulp or the like.
  • the wetting agent is selected from anionic based surfactants (based on sulfonate anions or carboxylate anions), fatty acid salts, sodium dodecyl sulfate (SDS) or sodium laureth sulfate, ammonium lauryl sulfate and other alkyl sulfate salts; cationic based surfactants such as cetyl pyridinium chloride; ampholytic surfactants like dodecyl betaine, dodecyl diniethylamine oxide; nonionic surfactants like alkyl polyethylene oxide, alkyl polyglucosides and fatty alcohols.
  • anionic based surfactants based on sulfonate anions or carboxylate anions
  • SDS sodium dodecyl sulfate
  • sodium laureth sulfate ammonium lauryl sulfate and other alkyl sulfate salts
  • cationic based surfactants such as cet
  • non soluble partially hydrophilic film is made out of thermoplastic starch materials.
  • the water soluble film material(s) are selected from Polyvinyl alcohol copolymer ionomers, Polyvinyl alcohol homopolymer, non - ionomeric poly vinyl alcohol polymer, Polymethacrylate, polyvinyl alchohol, polyacrylamide, polymethacrylamide, polyacrylic acid, polymethacrylic acid, polyurethane, polyethyleneglycol, polyvinylpyrrolidone,
  • proteinaceous binders such as gelatin, modified gelatins such as phthaloyl gelatin, polysaccharides such as starch, gum Arabic, pullulan and dextrin and water-soluble cellulose derivatives such as methyl cellulose, hydroxy propyl cellulose, hydroxy propyl methyl cellulose, hydroxy propyl ethyl cellulose, hydroxy ethyl cellulose, carboxy methyl cellulose either alone or combinations thereof.
  • theses are by no means 5 limiting.
  • the water soluble film material is cast on a non soluble partially hydrophilic film by passing it through the casting head and dried at a temperature ranging from 60 0 C to 200 0 C, preferably from 80 0 C to 175 0 C, more preferably from 100 0 C to 150 0 C.
  • This cast non soluble partially hydrophilic film is rewound and stored for further using it as a ⁇ preformed non soluble hydrophilic for the purpose of this invention.
  • non soluble partially hydrophilic film may be used without a liner.
  • the liner can be stripped immediately or after aging period of around 1 to around 720 hours.
  • non-porous biodegradable substrate (23) such as naturally corrosive and subsequently bio-degradable metallic foils like aluminium foil, brass foil, copper foil, tin foil, steel foil and zinc foil; non porous paper and the like on an unwinder (24) of a casting machine.
  • Unwinding the biodegradable substrate (23) at unwinder (24) for casting of water soluble/non soluble hydrophilic film by using known formulation of water soluble/non soluble hydrophilic film in a batch reactor (5), at the primary casting head (6).
  • the temperature of the batch solution ranges from 10 0 C to 95 0 C, preferably from 20 0 C to
  • the raw materials used for making the water soluble/non soluble hydrophilic film are selected from Polyvinyl alcohol copolymer ionomers, Polyvinyl alcohol homopolymer, non - ionomeric poly vinyl alcohol polymer, Polymethacrylate, polyvinyl alchohol, polyacrylamide, polymethacrylamide, polyacrylic acid, polymethacrylic acid, polyurethane, polyethyleneglycol, polyvinylpyrrolidone, proteinaceous binders such as gelatin, modified gelatins such as phthaloyl gelatin, polysaccharides such as starch, gum Arabic, pullulan and dextrin and water-soluble cellulose derivatives such as methyl cellulose, hydroxy propyl cellulose, hydroxy propyl methyl cellulose, hydroxy propyl ethyl cellulose, hydroxy ethyl cellulose, carboxy methyl cellulose either alone or combinations thereof.
  • these raw materials are by no means limiting.
  • the water soluble films can be cold
  • a water soluble/non soluble hydrophilic film was laminated with a biodegradable substrate such as crepe paper, the strength of the laminate increased as compared to the biodegradable substrate.
  • a biodegradable substrate such as crepe paper
  • the strength of the laminate increased as compared to the biodegradable substrate.
  • a crepe paper 110 GSM with 40% crepe
  • a water soluble/non soluble hydrophilic film 25 GSM.
  • UPM Universal Testing Machine
  • This invention also creates a range of options to use combinations of lower GSM of paper by tailoring the percentage of creping for specified end use applications.
  • the various embodiments of the invention therefore provides for the use of combining biodegradable materials taking advantage of the best characteristics of the combining materials resulting in novel "high-performance multi-layered biodegradable composite materials".
  • a laminate as shown in fig. 5 was produced consisting layers of paper (31), water soluble/non soluble hydrophilic film (32), aluminium foil (33) and another water soluble/non soluble hydrophilic film (34) laminated together as per the methods mentioned above.
  • This laminate can be used for packaging various liquids such as milk, juices, etc, with non soluble biodegradable film in contact with the liquid.
  • jute or hessian fabric is layered/laminated/coated/impregnated with a water soluble/non soluble hydrophilic film so that cement or other fine powdered material will not go waste due to seepage.
  • This laminate can also be used for packing various food products such as sugar so that the fibres or unwanted particles will not get mixed with the edible material.
  • the laminate will have an added advantage of better heat sealing, which was not possible if only jute or hessian fabric was used to make bags.
  • the multi-layered biodegradable composite materials thus produced are most suited for a variety of applications including, but not limited to, a wide range of packaging materials like grocery sacks, box inter-liner, retail pouches, shopping bags etc.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention concerne un matériau d'emballage biodégradable, et des procédés permettant de produire ce matériau, consistant à assembler par stratification un substrat biodégradable et une pellicule polymère biodégradable sans utiliser de couche adhésive intermédiaire. La pellicule peut être produite dans un matériau soluble dans l'eau ou gonflant lorsqu'il est exposé à l'humidité, et qui est biodégradable. L'invention concerne également des procédés hors ligne comprenant l'utilisation de substrats et de pellicules préformés, ainsi que des procédés hors ligne consistant à former la pellicule sur une feuille couverture avant l'opération de stratification, ou à extruder la pellicule sur le substrat.
PCT/IN2006/000072 2005-03-03 2006-03-02 Matériaux d'emballage WO2006117801A2 (fr)

Priority Applications (1)

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AU2006242781A AU2006242781A1 (en) 2005-03-03 2006-03-02 Packaging materials

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IN244MU2005 2005-03-03
IN244/MUM/2005 2005-03-03

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WO2006117801A2 true WO2006117801A2 (fr) 2006-11-09
WO2006117801A3 WO2006117801A3 (fr) 2007-05-03
WO2006117801B1 WO2006117801B1 (fr) 2007-06-14

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AU (1) AU2006242781A1 (fr)
WO (1) WO2006117801A2 (fr)
ZA (1) ZA200708451B (fr)

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GB2452227A (en) * 2007-08-28 2009-03-04 Portabrands Ltd Packaging materials
WO2009027741A1 (fr) * 2007-08-28 2009-03-05 13/04 International Limited Matériel d'emballage
FR2959495A1 (fr) * 2010-04-30 2011-11-04 Gascogne Sack Film pour sac biodegradable et/ou compostable, et sac correspondant
EP2447060A1 (fr) * 2010-11-02 2012-05-02 SACART S.p.a. Sac fabriqué en matériau composite et son procédé de fabrication
US9327438B2 (en) 2011-12-20 2016-05-03 Kimberly-Clark Worldwide, Inc. Method for forming a thermoplastic composition that contains a plasticized starch polymer
US9550618B1 (en) 2016-04-01 2017-01-24 Vericool, Inc. Shipping container with compostable insulation
US9718258B2 (en) 2011-12-20 2017-08-01 Kimberly-Clark Worldwide, Inc. Multi-layered film containing a biopolymer
US9957098B2 (en) 2016-04-01 2018-05-01 Vericool, Inc. Shipping container with compostable insulation
US10046901B1 (en) 2017-02-16 2018-08-14 Vericool, Inc. Thermally insulating packaging
US10597219B2 (en) 2017-02-23 2020-03-24 Vericool, Inc. Thermally insulating packaging
US10618690B2 (en) 2017-02-23 2020-04-14 Vericool, Inc. Recyclable insulated stackable tray for cold wet materials
US10625925B1 (en) 2018-09-28 2020-04-21 Vericool, Inc. Compostable or recyclable cooler
CN111660640A (zh) * 2020-06-22 2020-09-15 长沙银腾塑印包装有限公司 一种可降解包装产品
US10807788B2 (en) 2017-02-16 2020-10-20 Vericool, Inc. Compostable insulation for shipping container
WO2021028918A1 (fr) 2019-08-12 2021-02-18 Solutum Technologies Ltd Composites et leurs utilisations
WO2021108756A1 (fr) * 2019-11-27 2021-06-03 The United States Of America, As Represented By The Secretary Of Agriculture Composition d'emballage naturelle
US11247827B2 (en) 2018-07-24 2022-02-15 Vericool, Inc. Compostable or recyclable packaging wrap
US11572973B2 (en) 2015-05-20 2023-02-07 TemperPack Technologies, Inc. Thermal insulation liners
EP4281388A4 (fr) * 2021-02-08 2025-02-12 Anthony Robert Knoerzer Composition de film biodégradable et emballage

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Publication number Priority date Publication date Assignee Title
WO2008068779A3 (fr) * 2006-12-07 2008-11-27 Shilpan Pravinchandra Patel Emballage à base de film soluble dans l'eau, procédé et appareil pour sceller celui-ci à l'aide d'humidité/vapeur d'eau
GB2452227A (en) * 2007-08-28 2009-03-04 Portabrands Ltd Packaging materials
WO2009027741A1 (fr) * 2007-08-28 2009-03-05 13/04 International Limited Matériel d'emballage
GB2465102A (en) * 2007-08-28 2010-05-12 13 04 Internat Ltd Packaging material
FR2959495A1 (fr) * 2010-04-30 2011-11-04 Gascogne Sack Film pour sac biodegradable et/ou compostable, et sac correspondant
EP2447060A1 (fr) * 2010-11-02 2012-05-02 SACART S.p.a. Sac fabriqué en matériau composite et son procédé de fabrication
ITAN20100188A1 (it) * 2010-11-02 2012-05-03 Fiorini Ind Packaging Srl Sacco in materiale composito e metodo per la sua fabbricazione
WO2012059946A1 (fr) * 2010-11-02 2012-05-10 Sacart S.P.A Sac réalisé en un matériau composite et procédé pour sa fabrication
US9327438B2 (en) 2011-12-20 2016-05-03 Kimberly-Clark Worldwide, Inc. Method for forming a thermoplastic composition that contains a plasticized starch polymer
US9718258B2 (en) 2011-12-20 2017-08-01 Kimberly-Clark Worldwide, Inc. Multi-layered film containing a biopolymer
US12203584B2 (en) 2015-05-20 2025-01-21 TemperPack Technologies, Inc. Thermal insulation liners
US11572973B2 (en) 2015-05-20 2023-02-07 TemperPack Technologies, Inc. Thermal insulation liners
US10625923B2 (en) 2016-04-01 2020-04-21 Vericool, Inc. Recyclable insert for shipping container
US9957098B2 (en) 2016-04-01 2018-05-01 Vericool, Inc. Shipping container with compostable insulation
US9550618B1 (en) 2016-04-01 2017-01-24 Vericool, Inc. Shipping container with compostable insulation
US11453540B2 (en) 2016-04-01 2022-09-27 Vericool World, Llc Recyclable insert for shipping container
US12012273B2 (en) 2016-04-01 2024-06-18 Vericool World Llc Recyclable insert for shipping container
US10647497B2 (en) 2016-04-01 2020-05-12 Vericool, Inc. Compostable insert for shipping container
US10046901B1 (en) 2017-02-16 2018-08-14 Vericool, Inc. Thermally insulating packaging
US11794983B2 (en) 2017-02-16 2023-10-24 Vericool, Inc. Compostable insulation for shipping container
US11040818B2 (en) 2017-02-16 2021-06-22 Vericool, Inc. Compostable insulation for shipping container
US10807788B2 (en) 2017-02-16 2020-10-20 Vericool, Inc. Compostable insulation for shipping container
US11358780B2 (en) 2017-02-16 2022-06-14 Vericool World, Llc Compostable insulation for shipping container
US10618690B2 (en) 2017-02-23 2020-04-14 Vericool, Inc. Recyclable insulated stackable tray for cold wet materials
US10597219B2 (en) 2017-02-23 2020-03-24 Vericool, Inc. Thermally insulating packaging
US11072483B2 (en) 2017-02-23 2021-07-27 Vericool, Inc. Thermally insulating packaging
US11142371B2 (en) 2017-02-23 2021-10-12 Vericool, Inc. Recyclable insulated stackable tray for cold wet materials
US11247827B2 (en) 2018-07-24 2022-02-15 Vericool, Inc. Compostable or recyclable packaging wrap
US12258195B2 (en) 2018-07-24 2025-03-25 Vericool World Llc Compostable or recyclable packaging wrap
US11807440B2 (en) 2018-07-24 2023-11-07 Vericool World Llc Compostable or recyclable packaging wrap
US10625925B1 (en) 2018-09-28 2020-04-21 Vericool, Inc. Compostable or recyclable cooler
WO2021028918A1 (fr) 2019-08-12 2021-02-18 Solutum Technologies Ltd Composites et leurs utilisations
CN114929794A (zh) * 2019-11-27 2022-08-19 由农业部长代表的美利坚合众国 天然包装组合物
WO2021108756A1 (fr) * 2019-11-27 2021-06-03 The United States Of America, As Represented By The Secretary Of Agriculture Composition d'emballage naturelle
CN111660640A (zh) * 2020-06-22 2020-09-15 长沙银腾塑印包装有限公司 一种可降解包装产品
EP4281388A4 (fr) * 2021-02-08 2025-02-12 Anthony Robert Knoerzer Composition de film biodégradable et emballage

Also Published As

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WO2006117801A3 (fr) 2007-05-03
ZA200708451B (en) 2009-05-27
AU2006242781A1 (en) 2006-11-09
WO2006117801B1 (fr) 2007-06-14

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