WO2009027741A1 - Packaging material - Google Patents

Packaging material Download PDF

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Publication number
WO2009027741A1
WO2009027741A1 PCT/GB2008/050747 GB2008050747W WO2009027741A1 WO 2009027741 A1 WO2009027741 A1 WO 2009027741A1 GB 2008050747 W GB2008050747 W GB 2008050747W WO 2009027741 A1 WO2009027741 A1 WO 2009027741A1
Authority
WO
WIPO (PCT)
Prior art keywords
packaging material
latex
derivative
layer
starch
Prior art date
Application number
PCT/GB2008/050747
Other languages
French (fr)
Inventor
Ian Bates
Original Assignee
13/04 International Limited
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
Priority claimed from GB0716551A external-priority patent/GB0716551D0/en
Priority claimed from GB0809345A external-priority patent/GB2452227A/en
Priority claimed from GB0809369A external-priority patent/GB2460215A/en
Application filed by 13/04 International Limited filed Critical 13/04 International Limited
Priority to GB1000947A priority Critical patent/GB2465102A/en
Publication of WO2009027741A1 publication Critical patent/WO2009027741A1/en

Links

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
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B9/047—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material made of fibres or filaments
    • 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
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/04—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different 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
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/10—Layered products comprising a layer of natural or synthetic rubber 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
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/12—Layered products comprising a layer of natural or synthetic rubber comprising natural rubber
    • 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
    • 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
    • B32B27/12—Layered products comprising a layer of synthetic resin 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
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • 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
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/20—Inorganic coating
    • B32B2255/205—Metallic coating
    • 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
    • B32B2262/065—Lignocellulosic fibres, e.g. jute, sisal, hemp, flax, bamboo
    • 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
    • B32B2317/00—Animal or vegetable based
    • B32B2317/20—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
    • B32B2317/00—Animal or vegetable based
    • B32B2317/24—Oil
    • 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

Definitions

  • the present invention relates to packaging materials, in particular to compostable, biodegradable packaging materials.
  • a packaging material comprising a compostable laminate, wherein the compostable laminate comprises a layer comprising a natural-fibre cloth, and at least one layer comprising a starch derivative, cellulose derivative, latex derivative or latex.
  • a package in the form of a closeable, sealable or open container, or bag comprising a packaging material comprising a compostable laminate, wherein the compostable laminate comprises a layer comprising a natural- fibre cloth, and at least one layer comprising a starch derivative, cellulose derivative, latex derivative or latex.
  • a process for making a packaging material comprising a compostable laminate, wherein the compostable laminate comprises a layer comprising a natural-fibre cloth, and at least one layer comprising a starch derivative, cellulose derivative, latex derivative or latex, wherein the process comprises extruding and/or laminating a starch derivative, cellulose derivative, latex derivative or latex to a natural- fibre cloth.
  • the natural-fibre cloth is cellulose-based.
  • the natural-fibre cloth is cotton.
  • the natural-fibre cloth is formed from bast fibres.
  • the bast fibres are obtained from at least one of jute, kenaf, hemp, flax, ramie, sisal and abaca.
  • the starch or cellulose derivative is a lactic acid derivative.
  • the lactic acid derivative is polylactic acid or a biopolymer derived from corn, maize, potato or sugarbeet.
  • Particularly suitable are biopolymers sold under the trade marks Mater-Bi® (Novamont), Biograde® (FKuR Kunststoff GmbH), BioGrade (GreenerWorks Ltd), BioGrade (Hong Kong Pty Ltd), Biograde (Nanjing Pty Ltd) and BioPlastic.
  • the starch or cellulose derivative is at least partly derived from corn, maize, potato or sugarbeet.
  • the at least one layer comprises layer comprises a starch or cellulose derivative.
  • the layer comprising the starch or cellulose derivative further comprises a polyethylene.
  • the layer comprising the starch or cellulose derivative further comprises a calcium source.
  • the calcium source comprises one or more compounds selected from calcite, calcium sulphate, calcium carbonate and calcium oxide.
  • the calcium source is calcium carbonate.
  • the layer comprising the starch or cellulose derivative further comprises a mineral oil.
  • the layer comprising the starch or cellulose derivative comprises polylactic acid in an amount of from 50 to 100 wt%; polyethylene in an amount of from 0 to 40 wt%; mineral oil in an amount of from 0 to 10 wt%; and a calcium source in an amount of from 0 to 20 wt%; suitably, polylactic acid in an amount of about 70 wt%, polyethylene in an amount of about 20 wt%, and mineral oil in an amount of about 10 wt%.
  • the latex or latex derivative is a natural latex rubber, in particular a non- vulcanized rubber.
  • the latex derivative is natural rubber.
  • the latex or latex derivative is vulcanized.
  • the layer comprising the latex or latex derivative comprises a mineral oil.
  • the layer comprising the latex or latex derivative comprises latex in an amount of from 90 to 100 wt% and mineral oil in an amount of from 0 to 10 wt%.
  • the latex derivative is a synthetic rubber formed by polymerisation of a monomer or a mixture of monomers.
  • the synthetic rubber is styrene- butadiene rubber, butadiene rubber, chloroprene rubber or ethylene-propylene-diene rubber.
  • the layer comprising the latex or latex derivative further comprises one or more additives selected from fillers, aromatic oils, antioxidants, mineral oil, zinc oxide, satiric acid and accelerators.
  • a surface of the packaging material is metallised.
  • the metallised surface comprises aluminium.
  • the surface of the packaging material is metallised by a vacuum deposition process.
  • the packaging material further comprises a printed film.
  • the printed film is formed from a compostable polymer.
  • the printed film comprises a film comprising a starch derivative, cellulose derivative, latex derivative or latex.
  • the printed film and packaging material form a laminate.
  • a compostable laminating adhesive is interposed between the natural- fibre cloth layer and the layer comprising a starch or cellulose derivative, or a latex or latex derivative.
  • Figure 1 is a schematic sectional view of a packaging material according to the first aspect of the invention.
  • Packaging material 10 formed from a natural- fibre cloth base 11 and a starch derivative, cellulose derivative, latex derivative or latex 12.
  • Packaging material 10 may be formed by any suitable technique, such as by extrusion or lamination, although lamination is the preferred process.
  • Conventional lamination techniques include applying the starch derivative, cellulose derivative, latex derivative or latex 12 as a film to the natural- fibre cloth base 12 whilst using heat and/or pressure.
  • An optional adhesive may be used during the lamination process, and this will preferably be compostable.
  • the starch or cellulose derivative is a lactic acid derivative, such as polylactic acid, or a biopolymer derived from corn, maize, potato or sugarbeet.
  • Suitable biopolymers include those sold under the trade marks Mater-Bi® (Novamont), Biograde® (FKuR Kunststoff GmbH), BioGrade (GreenerWorks Ltd), BioGrade (Hong Kong Pty Ltd), Biograde (Nanjing Pty Ltd) and BioPlastic.
  • the starch derivative, cellulose derivative, latex derivative or latex 12 in the form of a film may be metallised by the process of vacuum deposition.
  • a suitable metal for forming the metallised surface is aluminium.
  • the metallised surface will generally cover the interior surfaces of the container to act as a barrier between an item located within the container and the starch derivative, cellulose derivative, latex derivative or latex 12.
  • a layer comprising the starch or cellulose derivative also comprises a polyethylene in an amount up to about 40%, a mineral oil in an amount up to about 10%, and a calcium source in an amount up to about 20%.
  • the calcium source is calcite, calcium sulphate, calcium carbonate or calcium oxide, suitably chalk.
  • the latex or latex derivative may include a filler.
  • the film formed from the starch derivative, cellulose derivative, latex derivative or latex of the laminate is directly printed upon.
  • the packaging material may also be covered with a printed film (not shown), which is preferably formed from a compostable polymer.
  • the printed film and packaging material form a laminate.
  • the laminated packaging material produced in accordance with the present invention provides a versatile material which has excellent barrier properties, and which can be used in a wide variety of applications.
  • these materials are considered to be excellent alternatives to oil-based packaging materials commonly used for food containment and preservation. Due to their excellent barrier properties, these laminate materials are suitable for use in containing liquids, and particularly for forming bags including reusable disposable carrier bags.
  • Packaging materials comprising jute, cotton and canvas and having at least one layer formed thereon from the following constituents have been made and tested, and found to be effective.
  • Natural rubber 50%; Fillers 30%; Aromatic oil 3%; Antioxidants 3%; Mineral Oil 5%; Zinc oxide 5%; Satiric acid 2%; Accelerators 2%.

Abstract

The present invention relates to packaging materials, in particular to compostable, biodegradable packaging materials. We describe a packaging material; a package in the form of a closeable, sealable or open container, or bag comprising the packaging material; and a process for making a packaging material, in which the packaging material comprisesa compostable laminate comprising a layer comprising a natural- fibre cloth, and at least one layercomprising a starch derivative, cellulose derivative, latex derivative or latex.

Description

PACKAGING MATERIALS
The present invention relates to packaging materials, in particular to compostable, biodegradable packaging materials.
According to a first aspect of the present invention, there is provided a packaging material comprising a compostable laminate, wherein the compostable laminate comprises a layer comprising a natural-fibre cloth, and at least one layer comprising a starch derivative, cellulose derivative, latex derivative or latex.
According to a second aspect of the present invention, there is provided a package in the form of a closeable, sealable or open container, or bag comprising a packaging material comprising a compostable laminate, wherein the compostable laminate comprises a layer comprising a natural- fibre cloth, and at least one layer comprising a starch derivative, cellulose derivative, latex derivative or latex.
According to a third aspect of the present invention, there is provided a process for making a packaging material comprising a compostable laminate, wherein the compostable laminate comprises a layer comprising a natural-fibre cloth, and at least one layer comprising a starch derivative, cellulose derivative, latex derivative or latex, wherein the process comprises extruding and/or laminating a starch derivative, cellulose derivative, latex derivative or latex to a natural- fibre cloth.
Suitably, the natural-fibre cloth is cellulose-based. Preferably, the natural-fibre cloth is cotton. Alternatively, the natural-fibre cloth is formed from bast fibres. Preferably, the bast fibres are obtained from at least one of jute, kenaf, hemp, flax, ramie, sisal and abaca.
Preferably, the starch or cellulose derivative is a lactic acid derivative. Suitably, the lactic acid derivative is polylactic acid or a biopolymer derived from corn, maize, potato or sugarbeet. Particularly suitable are biopolymers sold under the trade marks Mater-Bi® (Novamont), Biograde® (FKuR Kunststoff GmbH), BioGrade (GreenerWorks Ltd), BioGrade (Hong Kong Pty Ltd), Biograde (Nanjing Pty Ltd) and BioPlastic. Suitably, the starch or cellulose derivative is at least partly derived from corn, maize, potato or sugarbeet.
Suitably, the at least one layer comprises layer comprises a starch or cellulose derivative. Suitably, the layer comprising the starch or cellulose derivative further comprises a polyethylene. Suitably, the layer comprising the starch or cellulose derivative further comprises a calcium source. Suitably, the calcium source comprises one or more compounds selected from calcite, calcium sulphate, calcium carbonate and calcium oxide. Preferably, the calcium source is calcium carbonate. Suitably, the layer comprising the starch or cellulose derivative further comprises a mineral oil.
Preferably, the layer comprising the starch or cellulose derivative comprises polylactic acid in an amount of from 50 to 100 wt%; polyethylene in an amount of from 0 to 40 wt%; mineral oil in an amount of from 0 to 10 wt%; and a calcium source in an amount of from 0 to 20 wt%; suitably, polylactic acid in an amount of about 70 wt%, polyethylene in an amount of about 20 wt%, and mineral oil in an amount of about 10 wt%.
Suitably, the latex or latex derivative is a natural latex rubber, in particular a non- vulcanized rubber. Preferably, the latex derivative is natural rubber. Alternatively, the latex or latex derivative is vulcanized.
Suitably, the layer comprising the latex or latex derivative comprises a mineral oil. Preferably, the layer comprising the latex or latex derivative comprises latex in an amount of from 90 to 100 wt% and mineral oil in an amount of from 0 to 10 wt%.
Alternatively, the latex derivative is a synthetic rubber formed by polymerisation of a monomer or a mixture of monomers. Suitably, the synthetic rubber is styrene- butadiene rubber, butadiene rubber, chloroprene rubber or ethylene-propylene-diene rubber.
Optionally, the layer comprising the latex or latex derivative further comprises one or more additives selected from fillers, aromatic oils, antioxidants, mineral oil, zinc oxide, satiric acid and accelerators.
Optionally, a surface of the packaging material is metallised. Preferably, the metallised surface comprises aluminium. Suitably, the surface of the packaging material is metallised by a vacuum deposition process.
Optionally, the packaging material further comprises a printed film. Preferably, the printed film is formed from a compostable polymer. Preferably, the printed film comprises a film comprising a starch derivative, cellulose derivative, latex derivative or latex. Alternatively, the printed film and packaging material form a laminate.
Optionally, a compostable laminating adhesive is interposed between the natural- fibre cloth layer and the layer comprising a starch or cellulose derivative, or a latex or latex derivative.
The above and other aspects of the present invention will now be described in further detail, by way of example only, with reference to the accompanying drawings, in which:
Figure 1 is a schematic sectional view of a packaging material according to the first aspect of the invention.
Referring to Figure 1 there is shown a packaging material 10 formed from a natural- fibre cloth base 11 and a starch derivative, cellulose derivative, latex derivative or latex 12. Packaging material 10 may be formed by any suitable technique, such as by extrusion or lamination, although lamination is the preferred process. Conventional lamination techniques include applying the starch derivative, cellulose derivative, latex derivative or latex 12 as a film to the natural- fibre cloth base 12 whilst using heat and/or pressure. An optional adhesive may be used during the lamination process, and this will preferably be compostable.
In preferred embodiments, the starch or cellulose derivative is a lactic acid derivative, such as polylactic acid, or a biopolymer derived from corn, maize, potato or sugarbeet. Suitable biopolymers include those sold under the trade marks Mater-Bi® (Novamont), Biograde® (FKuR Kunststoff GmbH), BioGrade (GreenerWorks Ltd), BioGrade (Hong Kong Pty Ltd), Biograde (Nanjing Pty Ltd) and BioPlastic.
Additionally, the starch derivative, cellulose derivative, latex derivative or latex 12, in the form of a film, may be metallised by the process of vacuum deposition. A suitable metal for forming the metallised surface is aluminium. In a container made from the packaging material according to the present invention, the metallised surface will generally cover the interior surfaces of the container to act as a barrier between an item located within the container and the starch derivative, cellulose derivative, latex derivative or latex 12.
In preferred examples, a layer comprising the starch or cellulose derivative also comprises a polyethylene in an amount up to about 40%, a mineral oil in an amount up to about 10%, and a calcium source in an amount up to about 20%. The calcium source is calcite, calcium sulphate, calcium carbonate or calcium oxide, suitably chalk.
In embodiments that include a latex or latex derivative layer, the latex or latex derivative may include a filler.
In preferred embodiments, the film formed from the starch derivative, cellulose derivative, latex derivative or latex of the laminate is directly printed upon. In alternative embodiments, the packaging material may also be covered with a printed film (not shown), which is preferably formed from a compostable polymer. Preferably, the printed film and packaging material form a laminate.
The laminated packaging material produced in accordance with the present invention provides a versatile material which has excellent barrier properties, and which can be used in a wide variety of applications. In particular, these materials are considered to be excellent alternatives to oil-based packaging materials commonly used for food containment and preservation. Due to their excellent barrier properties, these laminate materials are suitable for use in containing liquids, and particularly for forming bags including reusable disposable carrier bags.
EXAMPLES
Packaging materials comprising jute, cotton and canvas and having at least one layer formed thereon from the following constituents have been made and tested, and found to be effective.
1. Polylactic acid (PLA) 100%
2. PLA 90% + Polyethylene (PE) 10% 3. PLA 75% + PE 25%
4. PLA 75% + PE 20% + calcium carbonate 5%
5. PLA 70% + PE 20% + calcium carbonate 10%
6. PLA 65% + PE 25% + calcium carbonate 10%
7. PLA 65% + PE 15% + calcium carbonate 20% 8. PLA 60% + PE 40%
9. PLA 50% + PE 40% + calcium carbonate 10%
10. BioGrade B-F
11. BioGrade D-F
12. BioGrade B-M 13. BioGrade D-M
14. BioPlastic (100% starch derivative)
15. BioPlastic (88% starch derivative + 12% PE)
16. Latex 100%
17. Latex 95 % + mineral o il 5 % 18. Latex 90% + mineral o il 10%
19. Natural rubber 50%; Fillers 30%; Aromatic oil 3%; Antioxidants 3%; Mineral Oil 5%; Zinc oxide 5%; Satiric acid 2%; Accelerators 2%.

Claims

CLAIMS:
1. A packaging material comprising a compostable laminate, wherein the compostable laminate comprises a layer comprising a natural-fibre cloth, and at least one layer comprising a starch derivative, cellulose derivative, latex derivative or latex.
2. A packaging material as claimed in claim 1, wherein the natural- fibre cloth is cellulose-based.
3. A packaging material as claimed in claim 2, wherein the natural- fibre cloth is cotton.
4. A packaging material as claimed in claim 1 or claim 2, wherein the natural- fibre cloth is formed from bast fibres, and wherein the bast fibres are obtained from at least one of jute, kenaf, hemp, flax, ramie, sisal and abaca.
5. A packaging material as claimed in any one of claims 1 to 4, wherein the starch or cellulose derivative is a lactic acid derivative.
6. A packaging material as claimed in claim 5, wherein the starch or cellulose derivative is polylactic acid or a biopolymer derived from corn, maize, potato or sugarbeet.
7. A packaging material as claimed in any one of the preceding claims, wherein the layer comprises a starch or cellulose derivative and further comprises a polyethylene.
8. A packaging material as claimed in claim 7, wherein the layer comprising the starch or cellulose derivative further comprises a calcium source comprising one or more compounds selected from calcite, calcium sulfate, calcium carbonate and calcium oxide.
9. A packaging material as claimed in claim 8, wherein the layer comprising the starch or cellulose derivative further comprises a mineral oil.
10. A packaging material as claimed in claim 8 or claim 9, wherein the layer comprising the starch or cellulose derivative comprises polylactic acid in an amount of from 50 to 100 wt%; polyethylene in an amount of from 0 to 40 wt%; mineral oil in an amount of from 0 to 10 wt%; and a calcium source in an amount of from 0 to 20 wt%; suitably, polylactic acid in an amount of about 70 wt%; polyethylene in an amount of about 20 wt%; and mineral oil in an amount of about 10 wt%.
11. A packaging material as claimed in any one of the preceding claims, wherein the layer comprises latex or a latex derivative, and the latex or a latex derivative is a natural latex rubber, in particular a non- vulcanized rubber.
12. A packaging material as claimed in any one of claims 1 to 10, wherein the layer comprises latex or a latex derivative, and the latex or latex derivative is vulcanized.
13. A packaging material as claimed in claim 11 or claim 12, wherein the layer further comprises a mineral oil.
14. A packaging material as claimed in any one of claims 11 to 13, wherein the layer comprises latex or a latex derivative in an amount of from 90 to 100 wt% and mineral oil in an amount of from 0 to 10 wt%.
15. A packaging material as claimed in any one of claims 1 to 10, wherein the layer comprises a latex derivative, and the latex derivative is a synthetic rubber formed by polymerisation of a monomer or a mixture of monomers.
16. A packaging material as claimed in claim 15, wherein the synthetic rubber is styrene-butadiene rubber, butadiene rubber, chloroprene rubber or ethylene-propylene-diene rubber.
17. A packaging material as claimed in any one of claims 11 to 16, wherein the layer comprising the latex or latex derivative further comprises one or more additives selected from the group of fillers, aromatic oils, antioxidants, mineral oil, zinc oxide, satiric acid, accelerators.
18. A packaging material as claimed in any one of the preceding claims, wherein a surface of the packaging material is metallised.
19. A packaging material as claimed in claim 18, wherein the metallised surface comprises aluminium.
20. A packaging material as claimed in claim 19, wherein the surface of the packaging material is metallised by a vacuum deposition process.
21. A packaging material as claimed in any one of the preceding claims, wherein the packaging material further comprises a printed film, preferably formed from a compostable polymer.
22. A packaging material as claimed in claim 21, wherein the printed film and packaging material form a laminate.
23. A packaging material as claimed in any one of the preceding claims, wherein a compostable laminating adhesive is interposed between the natural- fibre cloth layer and each of one or more layers comprising a starch or cellulose derivative, or a latex or latex derivative.
24. A package in the form of a closeable, sealable or open container, or bag comprising a packaging material as claimed in any one of claims 1 to 23.
25. A process for making a packaging material as claimed in any one of claims 1 to 23, the process comprising extruding and/or laminating a starch derivative, cellulose derivative, latex derivative or latex to a natural- fibre cloth.
PCT/GB2008/050747 2007-08-28 2008-08-28 Packaging material WO2009027741A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1000947A GB2465102A (en) 2007-08-28 2008-08-28 Packaging material

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
GB0716551.7 2007-08-28
GB0716551A GB0716551D0 (en) 2007-08-28 2007-08-28 Packaging material
GB0809345.2 2008-05-23
GB0809369.2 2008-05-23
GB0809345A GB2452227A (en) 2007-08-28 2008-05-23 Packaging materials
GB0809369A GB2460215A (en) 2008-05-23 2008-05-23 Packaging materials

Publications (1)

Publication Number Publication Date
WO2009027741A1 true WO2009027741A1 (en) 2009-03-05

Family

ID=39926776

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2008/050747 WO2009027741A1 (en) 2007-08-28 2008-08-28 Packaging material

Country Status (2)

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FR2964064A1 (en) * 2010-08-26 2012-03-02 Clio Andrea Zandvliet Three-dimensional biocomposite material for household objects, plates, furnitures and interior architecture elements, comprises plant and/or animal renewable material layers, biodegradable polymer sheets, and a stacking layer
US8445088B2 (en) 2010-09-29 2013-05-21 H.J. Heinz Company Green packaging
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WO2015183903A3 (en) * 2013-05-24 2016-04-07 Alter Eco Americas, Inc. Compostable laminated packaging material
GB2582344A (en) * 2019-03-20 2020-09-23 N Foster Marc Counter balance sitting device

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WO2011010164A3 (en) * 2009-07-24 2011-03-17 Natural Adcampaign Limited Printable advertising and display supports
FR2964064A1 (en) * 2010-08-26 2012-03-02 Clio Andrea Zandvliet Three-dimensional biocomposite material for household objects, plates, furnitures and interior architecture elements, comprises plant and/or animal renewable material layers, biodegradable polymer sheets, and a stacking layer
US8445088B2 (en) 2010-09-29 2013-05-21 H.J. Heinz Company Green packaging
WO2013057509A3 (en) * 2011-10-21 2013-08-15 Peel The Pamplemousse Limited A wrapping
WO2015183903A3 (en) * 2013-05-24 2016-04-07 Alter Eco Americas, Inc. Compostable laminated packaging material
GB2582344A (en) * 2019-03-20 2020-09-23 N Foster Marc Counter balance sitting device
GB2582344B (en) * 2019-03-20 2021-04-07 N Foster Marc Counter-balance sitting device

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