WO2022269198A1 - Materiau multicouche pouvant etre utilise comme emballage, comprenant une couche de materiau cellulosique et une couche de materiau comprenant au moins une caseine et/ou au moins un caseinate - Google Patents
Materiau multicouche pouvant etre utilise comme emballage, comprenant une couche de materiau cellulosique et une couche de materiau comprenant au moins une caseine et/ou au moins un caseinate Download PDFInfo
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- WO2022269198A1 WO2022269198A1 PCT/FR2022/051226 FR2022051226W WO2022269198A1 WO 2022269198 A1 WO2022269198 A1 WO 2022269198A1 FR 2022051226 W FR2022051226 W FR 2022051226W WO 2022269198 A1 WO2022269198 A1 WO 2022269198A1
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- WIPO (PCT)
- Prior art keywords
- layer
- casein
- multilayer
- caseinate
- packaging
- Prior art date
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
- D21H17/24—Polysaccharides
- D21H17/25—Cellulose
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/12—Coatings without pigments applied as a solution using water as the only solvent, e.g. in the presence of acid or alkaline compounds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
- D21H19/50—Proteins
Definitions
- MULTILAYER MATERIAL THAT CAN BE USED AS PACKAGING, COMPRISING A LAYER OF CELLULOSIC MATERIAL AND A LAYER OF MATERIAL COMPRISING AT LEAST ONE CASEIN AND/OR AT LEAST ONE CASEINATE
- This disclosure relates to the field of multilayer materials that can be used as packaging.
- the present disclosure relates to a multilayer material comprising a layer of cellulosic material A and a layer of material B comprising at least one casein and/or at least one caseinate.
- paper packaging 17% is provided with a layer of plastic, to provide a barrier to gases, fats or water (in PE, PP, PET, PVDC, EVOH, or PVOH) to show the food inside, or to allow sealability (closing the package).
- a layer of plastic to provide a barrier to gases, fats or water (in PE, PP, PET, PVDC, EVOH, or PVOH) to show the food inside, or to allow sealability (closing the package).
- recycled paper cannot be used in direct contact with food, due to the migration of mineral oils from the inks used in the previous paper, for example in newspapers.
- a layer of plastic must again be used as a barrier for consumer safety. This prevents widespread use of recycled paper in food packaging.
- the present invention aims to satisfy at least one of the following objectives.
- One of the objectives of the present invention is to provide a recyclable material that can be used as packaging.
- One of the objectives of the present invention is to provide a bio-based recyclable material that can be used as packaging.
- One of the objectives of the present invention is to provide a recyclable material that can be used as packaging in the food sector.
- One of the objectives of the present invention is to provide a biodegradable material that can be used as packaging.
- Another object of the present invention is to provide a material based on cellulosic materials, having improved barrier properties.
- One of the objectives of the present invention is to provide a recyclable material that can be easily produced.
- the subject of the present disclosure is a multilayer material comprising: i) At least one layer of cellulosic material A, and ii) At least one layer of material B comprising: a. At least one casein and/or at least one caseinate; b. Water, and c. At least one plasticizer different from b).
- the present disclosure also relates to a multilayer material obtained:
- a solution S comprising: a. At least one casein and/or at least one caseinate; b. Water, and c. At least one plasticizer different from b);
- the present disclosure also relates to a packaging comprising a multilayer material.
- the present disclosure also relates to a product packaged by packaging comprising a multilayer material.
- the present disclosure also relates to a method for manufacturing a multilayer material, said method being carried out
- a solution comprising: a. At least one casein and/or at least one caseinate; b. Water, and c. At least one plasticizer different from b);
- a layer of cellulosic material A and a layer of material B comprising: a. At least one casein and/or at least one caseinate; b. Water, and c. At least one plasticizer different from b), possibly by means of a binder, the assembly being preferably carried out by lamination or lamination.
- this multilayer material could be used as packaging. Indeed, this multilayer material can be recycled in recycling centers without modifying lines or processes because the layer of material B is water-soluble. Recycling centers will be able to recover nearly 100% of cellulosic material fibers through simple mechanical filtration. The residues of material B resulting from its solubilization will be biodegraded in the water treatment infrastructures already in place within the recycling plants. The fact that the residues of material B are biodegradable makes it possible to avoid pollution linked to microplastics.
- a layer of material B makes it possible to improve the barrier properties of the multilayer material, in particular the barrier properties to greases and to oxygen, which makes it possible to envisage use in the field food packaging.
- the multilayer material according to the invention also has good weldability properties, and in particular heat-sealability.
- the multilayer material according to the invention combines good recyclability, improved barrier properties and good weldability properties, which allows it to be used as packaging, in particular in the food sector.
- material B is safe for food contact, 100% renewable, compostable and biodegradable in the marine environment, which is not the case for most polymers. used in packaging. Casein is an existing ingredient, documented in the food industry, and easily industrialisable. The multilayer material can therefore be produced easily.
- packing is meant an object intended to contain and protect goods, to allow their handling and their transport from the producer to the consumer or to the user, and to ensure their presentation, their conservation, their protection and /or their use.
- cellulosic material is meant, for example, a material which can be derived from a cellulose pulp.
- This cellulose pulp can be produced by chemical and/or mechanical treatment, which is well known to those skilled in the art.
- This cellulose pulp can be derived from any suitable source such as wood, recycled wood, annual plants, agricultural residues (bagasse, straws, %), grasses (eg sugar cane, bamboo ) or boxes.
- thermoplastic is meant, for example, a material which becomes malleable and bendable above a given temperature, the glass transition temperature Tg, but which below this Tg becomes hard again, these transformations being reversible.
- biodegradable is meant, for example, a material which can be decomposed under the action of microorganisms (bacteria, fungi, algae, etc.). The result of this decomposition is the formation of water, CO2 and/or methane and possibly by-products (residues, new biomass) that are not toxic to the environment. It is, for example, a biodegradable material according to European standard EN NF 13432 and/or standard NF T 51-800.
- water-soluble means, for example, which dissolves in water.
- the water solubility of a material can be measured in the following way: a piece of film (5 cm x 5 cm, cut with a cookie cutter) is fixed on a slide holder then is immersed in a beaker of 1000 ml capacity , containing 600 ml of distilled water at 20° C. with stirring, with a magnetic bar, at 300 rpm. The time it takes for the film to break through is measured. The disintegration of the film leads to the formation of film particles. The test lasts 10 minutes after which the particles are passed through a 0.5 mm sieve to check the particle size. When there are no particles in the sieve, the film is considered water-soluble.
- plasticizer is meant, for example, a substance making it possible to lower the glass transition temperature Tg of the material.
- hydrophobic is meant, for example, a compound having little affinity with water and having a tendency not to dissolve therein. Typically, it is a predominantly apolar compound.
- hydrophilic is meant, for example, a compound having an affinity with water and having a tendency to dissolve therein. Typically, it is a compound having polar groups capable of forming hydrogen bonds.
- surfactant is meant, for example, an amphiphilic molecule, that is to say a molecule possessing both hydrophilic and hydrophobic properties.
- HLB hydrophilic-lipophilic balance
- fatty acid is meant, for example, an aliphatic monocarboxylic acid.
- biobased we mean, for example, a product made from materials of biological origin.
- binder is meant, for example, an agent making it possible to create a bonding layer between the layer of cellulosic material A and the layer of material B.
- the binder used in the present invention can be a binder conventionally used in the manufacture of multilayer materials and in particular of multilayer films.
- hot-melt glues thermoofusibles in French.
- the invention relates firstly to a multilayer material comprising: i) At least one layer of cellulosic material A, and ii) At least one layer of material B comprising: a. At least one casein and/or at least one caseinate; b. Water, and c. At least one plasticizer different from b).
- the present disclosure also relates to a multilayer material obtained:
- a solution comprising: a. At least one casein and/or at least one caseinate; b. Water, and c. At least one plasticizer different from b);
- a layer of cellulosic material A and a layer of material B comprising: a. At least one casein and/or at least one caseinate; b. Water, and c. At least one plasticizer different from b), optionally by means of a binder, the assembly being preferably carried out by lamination or lamination.
- the multilayer material is preferably recyclable and/or biosourced.
- the multilayer material can be recyclable according to directive 2018/852/EU of May 30, 2018.
- the multilayer material is compostable, preferably according to standard NF T 51-800.
- the multilayer material may have a thickness of between 0.01 and 100 mm, preferably between 0.05 and 50 mm.
- the cellulosic material A is preferably chosen from paper and cardboard. According to one embodiment, cellulosic material A has a basis weight of between 20 and 500 g/m 2 , preferably between 50 and 450 g/m 2 . According to one embodiment, the cellulosic material A is chosen from papers having a weight of between 20 and 225 g/m 2 , and cardboard having a weight of between 225 and 500 g/m 2 .
- the layer of cellulosic material A may have a thickness of between 0.01 and 50 mm, preferably between 0.05 and 20 mm.
- the cellulosic material A comprises cellulose, preferably at least 80% by weight, and preferably at least 90% by weight.
- the cellulosic material A can be colored and comprise a pigmentary layer.
- the cellulosic material A can comprise a mineral layer, for example of the kaolin type.
- the material B and/or the solution S comprise: a. At least one casein and/or at least one caseinate; b. Water, and c. At least one plasticizer different from b).
- Casein is a protein derived from milk which is poorly soluble in water. It is mainly obtained by precipitation by adding an acid (acid casein) or rennet (rennet casein) to the milk, or by filtration (miscellar casein). Casein consists of a mixture of a-casein, b-casein and k-casein with molar masses between 19,000 and 25,000 g/mol.
- caseinate is meant, for example, a casein salt whose counter cation is chosen from the group comprising—preferably consisting of—calcium, potassium, ammonium, sodium and magnesium.
- a) comprises at least one caseinate, for example a sodium caseinate, or a mixture of caseinates.
- a) comprises a mixture of casein and at least one caseinate.
- the mass ratio between the casein and the caseinate(s) can be between 5/95 and 95/5, 20/80 and 80/20 or 40/60 and 60/40.
- the material B and/or the solution S can comprise gelatin d).
- Gelatin is a protein which has a high level of glycine and proline. It is obtained by partial hydrolysis of collagen, mainly from collagen contained in the skins and bones of animals. It can be type A (it then comes from an acid treatment of the collagen) or type B (it then comes from a basic treatment of the collagen). It can also be obtained by enzymatic treatment of collagen.
- the gelatin used has preferably not been chemically modified. According to one embodiment of the invention, the gelatin used is commercially available food gelatin or type B, it can be in the form of sheets, powder or granules. Advantageously, the gelatin used is of type B.
- the ratio of the quantities a): d), when d) is present, can be between 90:10 and 20:80, preferably between 75:25 and 25:75, and preferably between 60:40 and 40 :60. According to a particular embodiment, the ratio a):d) is 50:50. According to a particular embodiment, the ratio a):d) is between 55:45 and 45:55.
- the plasticizer c) can be chosen from polyols, glycerol acetates, glycerol propionates and mixtures thereof.
- polyols examples include glycerol, hexanetriol, glycols, including ethylene glycol, and sugars and their derivatives.
- sugars mention may be made of disaccharides such as maltose, lactose, sucrose and monosaccharides such as fructose.
- sugar derivatives mention may be made of their hydrogenated derivatives such as sorbitol, maltitol, mannitol, and xylitol, or even the transformation products of these hydrogenated derivatives such as sorbitan.
- the plasticizer c) is chosen from glycerol, sorbitol, mannitol, ethylene glycol and mixtures thereof.
- the plasticizer c) is chosen from glycerol, sorbitol, and mixtures thereof.
- the plasticizer c) is glycerol.
- the plasticizer c) may contain residual water.
- the plasticizer c) makes it possible to lower the viscosity of the product by increasing the mobility of the molecular chains.
- the plasticizer c) is a hydrophilic plasticizer.
- the material B and/or the solution S may also comprise a hydrophobic agent e).
- the hydrophobic agent e) can be chosen from:
- C3-C33 carboxylic acids, preferably C4-C28 fatty acids, and even more preferably C6-C28 unsaturated fatty acids;
- the polycarboxylic acid esters can be derived from at least one polycarboxylic acid and from at least one alcohol, preferably a C1-C18 alcohol.
- polycarboxylic acids preferably retained in the context of the invention, mention may be made of citric acid, hydroxycitric acid, tartaric acid, malic acid, oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, maleic acid, fumaric acid.
- C2-C6 alcohols such as for example ethanol, n-propanol, G/so-propanol, n-butanol and tert-butanol. .
- the hydrophobic agent e) is chosen from triethyl citrate, tributyl O-acetyl citrate, tributyl citrate and mixtures thereof.
- the hydrophobic agent e) is a C3-C33 carboxylic acid, preferably a C4-C28 fatty acid, and even more preferably an Ob-C28 unsaturated fatty acid.
- C4-C28 fatty acids used in the context of the invention, mention may be made of caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, and mixtures thereof.
- C6-C28 unsaturated fatty acids mention may be made of palmitoleic acid, oleic acid, linoleic acid, and mixtures thereof.
- the material B and/or the solution S may also comprise at least one surfactant f), preferably chosen from zwitterionic surfactants whose HLB is between 2 and 8.
- polysorbates are fatty acid esters of polyoxyethylene sorbitan.
- polysorbate 20 polysorbate 40, polysorbate 60, and polysorbate 80.
- the ratio of the quantities of f) to e) is greater than or equal to 1.
- this ratio may be between 1.3 and 3; preferably between 1.5 and 2.5.
- the material B and/or the solution S may also comprise a polysaccharide g).
- g) is chosen from pullulan, starch, alginates, and mixtures thereof.
- the polysaccharide g) can be a water-soluble polysaccharide.
- the material B and/or the solution S can additionally comprise a bittering agent h), preferably denatonium benzoate.
- the bittering agent h) can be chosen from denatonium benzoate, derivatives of denatonium benzoate, denatonium saccharide, denatonium chloride, sucrose benzoate, quinine, quinine hydrochloride, sulphate quinine, brucine, brucine sulfate, quassia, quassine, naringin, limonine, phenylthiocarbamide, quebracho, sucrose octaacetate, quercetin, berberine, and mixtures thereof.
- the material B and/or the solution S also comprise an additive i) chosen from dyes, protein coagulants, anti-caking agents, slip agents and mixtures thereof.
- coagulants mention may be made of citric acid and acetic acid.
- anti-caking agents mention may be made of colloidal silica.
- slip agents mention may be made of polyethylene glycols and compounds with fatty chains, preferably C12-C28, having an amide terminus.
- the material B and/or the solution S comprise an additive j) chosen from sequestering agents.
- sequestering agent is meant, for example, ligands which form chemical complexes with metal ions such as copper, iron, nickel, calcium and magnesium.
- material B comprises between 10 and 80% casein and/or caseinate a), preferably between 20 and 75%, and, even more preferably, between 25 and 70%.
- material B comprises between 50 and 80% casein and/or caseinate a), preferably between 52 and 75%, and, even more preferably, between 55 and 70%. According to one embodiment, material B comprises between 10 and 55% casein and/or caseinate a), preferably between 20 and 50%, preferably between 25 and 40%, and more preferably still between 30 and 35%.
- material B comprises between 1 and 55% gelatin d), preferably between 5 and 50%, preferably between 10 and 40%, and more preferably still between 30 and 35%.
- material B comprises between 30 and 35% casein and/or caseinate a), and between 30 and 35% gelatin d).
- the material B can comprise between 5 and 15% water b), preferably between 7 and 11%.
- the amount of water can be between 9 and 10%.
- Water acts as a plasticizer which must be distinguished from plasticizer c) entering into the composition of material B.
- the material B can comprise c) between 10 and 35% of at least one plasticizer different from c), preferably between 15 and 30%.
- the material B can comprise between 0.1 and 8% of a hydrophobic agent e), preferably between 1 and 4%.
- material B comprises between 0.5 and 6%, preferably between 1 and 3%, of a hydrophobic agent e).
- the material B can comprise between 0.5 and 6% of at least one surfactant f), preferably chosen from zwitterionic surfactants whose HLB is between 2 and 8.
- the material B can comprise comprises between 1 and 5% of at least one surfactant f), preferably between 1.5 and 4.5%, and even more preferably between 2 and 4%.
- the material B can comprise between 2 and 10% of a polysaccharide g), preferably g) is chosen from pullulan, starch, alginates, and mixtures thereof.
- material B comprises between 4 and 8% of a polysaccharide g).
- Material B can comprise between 0.001 and 0.5% of a bittering agent h), preferably denatonium benzoate.
- material B also comprises between 0.05 and 0.15% of a bittering agent h).
- Material B can comprise between 0.1% and 5% of i). Material B can comprise between 1 and 5% of an additive j) chosen from sequestering agents.
- Material B can be water-soluble and/or biodegradable. Material B can be biobased. According to one embodiment, material B is a thermoplastic material. Material B can be obtained by extrusion, as mentioned in the examples.
- the layer of material B is a layer of film of material B, preferably a layer of film of thermoplastic, biodegradable and water-soluble material B.
- the film layer of material B has a thickness of between 1 and 150 microns, preferably between 2 and 50 microns and more preferably between 2.5 and 20 microns.
- the proportions of the various constituents of the solution S are expressed in % by weight relative to the total weight of the dry matter in the solution S.
- the solution S comprises between 0.1 and 90% of dry matter, preferably between 1 and 50% dry matter, preferably between 5 and 25% dry matter, and more preferably between 10 and 20% dry matter.
- Solution S can be obtained by dissolving material B in water or by dissolving the various components in water.
- the solution S comprises between 10 and 80% casein and/or caseinate a), preferably between 20 and 75%, and, even more preferably, between 25 and 70%.
- the solution S comprises between 50 and 80% casein and/or caseinate a), preferably between 52 and 75%, and, even more preferably, between 55 and 70%. According to one embodiment, the solution S comprises between 10 and 55% casein and/or caseinate a), preferably between 20 and 50%, preferably between 25 and 40%, and more preferably still between 30 and 35%.
- the solution S comprises between 1 and 55% of gelatin d), preferably between 5 and 50%, preferably between 10 and 40%, and even more preferably between 30 and 35%.
- the solution S comprises between 30 and 35% casein and/or caseinate a), and between 30 and 35% gelatin d).
- the solution S can comprise c) between 10 and 35% of at least one plasticizer different from c), preferably between 15 and 30%.
- the solution S can comprise between 0.1 and 8% of a hydrophobic agent e), preferably between 1 and 4%.
- the solution S comprises between 0.5 and 6%, preferably between 1 and 3%, of a hydrophobic agent e).
- the solution S can comprise between 0.5 and 6% of at least one surfactant f), preferably chosen from zwitterionic surfactants whose HLB is between 2 and 8.
- the solution S can comprise comprises between 1 and 5% of at least one surfactant f), preferably between 1.5 and 4.5%, and even more preferably between 2 and 4%.
- the solution S can comprise between 2 and 10% of a polysaccharide g), preferably g) is chosen from pullulan, starch, alginates, and mixtures thereof.
- the solution S comprises between 4 and 8% of a polysaccharide g).
- the solution S can comprise between 0.001 and 0.5% of a bittering agent h), preferably denatonium benzoate.
- a bittering agent h preferably denatonium benzoate.
- the solution S further comprises between 0.05 and 0.15% of a bittering agent h).
- the solution S can comprise between 0.1% and 5% of i).
- the solution S can comprise between 1 and 5% of an additive j) chosen from sequestering agents.
- the solution S can also contain a preservative and/or a biocide.
- concentration of preservative and/or a biocide can be between 0.1 and 5%.
- Packaging comprising multi-layer material
- the present disclosure also relates to a packaging comprising a multilayer material.
- the packaging includes other layers than the multilayer material, in other cases the packaging consists of the multilayer material.
- the present disclosure also relates to the use of a multilayer material for packaging various products (pharmaceuticals, food, chemicals, cosmetics, etc.).
- the present disclosure also relates to a product packaged by packaging comprising a multilayer material.
- the product can be in solid, liquid or gel form.
- the packaged product can be any object, for example it can be a mechanical part, a do-it-yourself object, a gardening object, a magazine, a newspaper, or disposable dishes.
- the packaged product can for example be chosen from among pharmaceutical, food, chemical and cosmetic products.
- the packaged product is a food product, such as for example meat, fish, vegetables, fruits, pastries, pastries, chocolate, confectionery, food additives, ingredients, dry preparations, food powders, ready meals.
- the packaged product is a cosmetic product.
- the packaged product is a detergent.
- the detergents can be in the form of liquid or powder, compact or not.
- it may be a detergent tablet.
- Detergent tablets include dishwasher detergent tablets and laundry detergent tablets. It can also be liquid detergent, such as liquid laundry detergent.
- the multilayer material can be manufactured by lamination, coating, lamination, co-extrusion or coating extrusion processes well known to those skilled in the art.
- the present disclosure also relates to a method for manufacturing a multilayer material, characterized in that it is carried out - either by coating a layer of cellulosic material A with a solution S comprising: a. At least one casein and/or at least one caseinate; b. Water, and c. At least one plasticizer different from b);
- a layer of cellulosic material A and a layer of material B comprising: a. At least one casein and/or at least one caseinate; b. Water, and c. At least one plasticizer different from b), possibly by means of a binder, the assembly being preferably carried out by lamination or lamination.
- the manufacture of the multilayer material is carried out by coating.
- the layer of cellulosic material A is coated with a solution S. This can be done using a coating material well known to those skilled in the art. After coating, the coated cellulosic material A can be dried, for example in an oven, in order to obtain the multilayer material.
- the manufacture of the multilayer material is carried out by assembling a layer of cellulosic material A and a layer of material B.
- the assembly can be carried out by lamination or lamination .
- the lamination can be carried out cold or hot. In the case of cold lamination, a binder can be used. In the case of hot lamination, this step can be carried out without a binder.
- the complexation can be carried out by a step of lamination, co-extrusion or coating extrusion, with or without a binder.
- the assembly can for example be carried out by coating one of the faces of one of the materials A or B with a binder, then by bringing the two materials into contact. so that the binder is found between the two materials.
- This assembly can be carried out by means of a calender.
- the cellulosic materials used are as follows:
- thermoplastic granules used for the coating were prepared by extrusion from sodium caseinate.
- the extruder used is a Clextral® BC 21 co-rotating twin-screw extruder, with a diameter of 25 mm, a center distance of 21 mm and a length of 900 mm. This extruder has at least 4 zones: a first introduction zone, a second introduction zone, a third degassing zone, and a fourth die zone.
- the rotational speed of the twin screws is between 175 and 320 rpm and the temperatures of the different zones are between 30 and 120°C.
- the first zone of the extruder is a powder introduction zone: caseinate and lecithin.
- the liquids are introduced into the second zone.
- the extruder further comprises a degassing zone in the open air and a final zone consisting of a cylindrical rod die with a diameter of 4 mm.
- the auger profile is as follows: 750 mm direct pitch auger, 50 mm mixing auger, 100 mm reverse pitch auger.
- the rod On leaving the extruder, the rod is dried and introduced into a granulator to give granules 2 to 3 mm in diameter.
- the final composition of the pellets is as follows:
- thermoplastic granules Dissolution of the thermoplastic granules in water with stirring, to obtain an 11%, 18% or 19% dry matter solution.
- the coating of the papers with the solution was carried out with laboratory coating equipment, an Elcometer which allows the translation of a threaded bar in order to spread and dose a solution on the surface of a paper. 2 coating passes on the same face of each of the papers were carried out, so as to obtain a layer weight of 9 or 14 g/m 2 .
- Table 1 The results obtained are shown in Table 1.
- the coated sheets of paper are then dried in an oven at 55°C and then under a half-moon dryer at 80°C. They are then placed under a heavy metal plate.
- the characterization of the support papers without coating and of the coated papers was carried out under standardized conditions at 23° C.-50% RH (NF EN 20 187, 1993).
- the weight measurement was carried out according to the method described in the NF EN ISO 536, 2012 standard, and the thickness measurement according to the method described in the NF EN ISO 534, 2011 standard. The results obtained are in line with the expected values and correspond to the different deposits made on the 2 papers.
- the adhesion was then tested according to the Finat 3 method:
- the coated support is glued using tape to a plate.
- the specimens prepared in this way are produced in compliance with the Finat 3 method, namely: maintenance for 20 hours at 23° C. under a pressure of 6.86 kPa (70 g/cm2) of the plate/tape/coated paper assembly.
- the Finat method 1 no delamination between the coated layer and the paper backing was observed. Indeed, the delamination occurred at the level of the tape.
- Grease barriers Method for measuring the Cobb index with oil
- the measurement of the Cobb index is carried out on a surface of 25 cm 2 and its duration is fixed here at 60 sec. ISIO 4 oil colored with Sudan red III is used, which makes it possible to visualize the defects when they are present. A method derived from the SCAN-P 37 standard is used. The measurement of the Cobb index makes it possible to determine the quantity of oil that the surface of a paper or cardboard can absorb for a given time, here 60s. The lowest possible Cobb index is sought.
- the measurements are carried out on 5 different samples. We then calculate the mean and the standard deviation. The measurements are carried out at 23° C. / 50% RH after the samples have remained under these conditions for at least 12 hours. The results are shown in Table 2.
- Oxygen barrier Characterization OTR measurement at 23°C - 50% RH according to the ASTM F 1927 standard
- the oxygen measurement is made using a Presens device according to the ASTM F1927 standard. The measurement is carried out at the temperature and humidity of the conditioned room, i.e. 23°C / 50% RH. The measurements were doubled on 4 different samples. The results are shown in Table 3. [0144] [Table 3]
- the recyclability of the multilayer materials according to the invention has been determined.
- the recyclability of packaging is assessed within the meaning of Directive 2018/852/EU of May 30, 2018 (amending Directive 94/62/EC).
- the packaging must have a paper-cardboard structure comprising at least 50% by weight of paper-cardboard material
- the packaging must be designed with materials or combinations of materials that are compatible with known, relevant and industrially available recycling technologies. It should not negatively affect recycling processes.
- All the multilayer materials prepared according to the invention contain at least 50% by weight of paper/cardboard material. The first condition is therefore fulfilled.
- a recycling test was then carried out with the multilayer materials prepared according to the invention in order to evaluate the impact of the presence of the layer of material B comprising sodium caseinate.
- the different steps performed are presented below.
- the pulping operation consists in individualizing the cellulosic fibers so as to make the fibrous suspension pumpable with a view to classifying it, using a laboratory pulper.
- a laboratory pulper For the purposes of the test and more particularly of the resuspension, we manually tore the 60g sample into pieces of about 3 x 3 cm in order to make it compatible with the size of the laboratory pulper.
- the raw material prepared is then resuspended under the following conditions: - Temperature*: 40°C
- pulp or fibrous suspension After 15 minutes of disintegration, the disintegrated raw material (called pulp or fibrous suspension) is observed visually in order to verify two points:
- the paste corresponding to the disintegration of the sample to be tested is then collected and then classified on two Somerville laboratory classification devices mounted in cascade, the first is equipped with a 15/100 mm slotted sieve and the second with a 10/100 mm sieve.
- the accepted paste passes through the slits of the classifiers while the undesirable elements (such as pieces of plastic) remain on the surface of the classifying sieve.
- the first classifier is used to retain large contaminants and the second any residual contaminants.
- the presence of the layer of material B comprising sodium caseinate and glycerol, on a layer A of cellulosic material does not affect the recyclability of this cellulosic material.
- a multilayer material was prepared according to the procedure described above.
- the layer weight is 10g/m2.
- Heat sealability tests were carried out on a Lako Seal Tester SL10 from Lako Sool with the following parameters: - Pressure: 0.2 N/mm 2
- the dimension of the heat-sealed test pieces was 20 mm * 25.4 mm.
- the multilayer material according to the invention has good weldability. Indeed the fact of having a cohesive failure, indicates that the failure occurs in the material and not at the level of the seal. Furthermore, the peel forces for seals made at 150°C, 160°C or 170°C are similar and high. Thus, the multilayer materials according to the invention have good heat-seal properties.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Laminated Bodies (AREA)
- Wrappers (AREA)
- Biological Depolymerization Polymers (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA3225189A CA3225189A1 (fr) | 2021-06-23 | 2022-06-23 | Materiau multicouche pouvant etre utilise comme emballage, comprenant une couche de materiau cellulosique et une couche de materiau comprenant au moins une caseine et/ou au moins un caseinate |
EP22744270.4A EP4359315A1 (fr) | 2021-06-23 | 2022-06-23 | Materiau multicouche pouvant etre utilise comme emballage, comprenant une couche de materiau cellulosique et une couche de materiau comprenant au moins une caseine et/ou au moins un caseinate |
KR1020247002349A KR20240032864A (ko) | 2021-06-23 | 2022-06-23 | 셀룰로오스 물질층과 적어도 하나의 카세인 및/또는 적어도 하나의 카세인염을 포함하는 물질층으로 구성된, 포장재로 사용될 수 있는 다층 재료 |
BR112023027357A BR112023027357A2 (pt) | 2021-06-23 | 2022-06-23 | Material multicamadas que pode ser utilizado como embalagem, compreendendo uma camada de material celulósico e uma camada de material que compreende pelo menos uma caseína e/ou pelo menos um caseinato |
CN202280044978.0A CN117813244A (zh) | 2021-06-23 | 2022-06-23 | 可用作包装的包含纤维素材料层和包含至少一种酪蛋白和/或至少一种酪蛋白酸盐的材料层的多层材料 |
AU2022296834A AU2022296834A1 (en) | 2021-06-23 | 2022-06-23 | Multilayer material useful as packaging, comprising a layer of cellulosic material and a layer of material comprising at least one moins one casein and/or at least one caseinate |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR2106706A FR3124429A1 (fr) | 2021-06-23 | 2021-06-23 | Materiau multicouche pouvant etre utilise comme emballage |
FRFR2106706 | 2021-06-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022269198A1 true WO2022269198A1 (fr) | 2022-12-29 |
Family
ID=78649337
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2022/051226 WO2022269198A1 (fr) | 2021-06-23 | 2022-06-23 | Materiau multicouche pouvant etre utilise comme emballage, comprenant une couche de materiau cellulosique et une couche de materiau comprenant au moins une caseine et/ou au moins un caseinate |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP4359315A1 (fr) |
KR (1) | KR20240032864A (fr) |
CN (1) | CN117813244A (fr) |
AU (1) | AU2022296834A1 (fr) |
BR (1) | BR112023027357A2 (fr) |
CA (1) | CA3225189A1 (fr) |
FR (1) | FR3124429A1 (fr) |
WO (1) | WO2022269198A1 (fr) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5620757A (en) * | 1989-05-23 | 1997-04-15 | Mitsubishi Rayon Co., Ltd. | Edible film and method of making same |
WO2002002705A1 (fr) * | 2000-07-03 | 2002-01-10 | Centre De Valorisation Des Glucides Et Produits Naturels | Composition, kits et procede pour conferer a un substrat des proprietes barrieres et leurs utilisations |
FR3075215A1 (fr) * | 2017-12-19 | 2019-06-21 | Lactips | Materiau thermoplastique biodegradable a base de caseine et/ou de caseinate |
US20200002572A1 (en) * | 2016-09-01 | 2020-01-02 | Sm Technology Holdings Llc | Biobased carrier coatings |
-
2021
- 2021-06-23 FR FR2106706A patent/FR3124429A1/fr active Pending
-
2022
- 2022-06-23 WO PCT/FR2022/051226 patent/WO2022269198A1/fr active Application Filing
- 2022-06-23 BR BR112023027357A patent/BR112023027357A2/pt unknown
- 2022-06-23 AU AU2022296834A patent/AU2022296834A1/en active Pending
- 2022-06-23 CA CA3225189A patent/CA3225189A1/fr active Pending
- 2022-06-23 EP EP22744270.4A patent/EP4359315A1/fr active Pending
- 2022-06-23 CN CN202280044978.0A patent/CN117813244A/zh active Pending
- 2022-06-23 KR KR1020247002349A patent/KR20240032864A/ko unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5620757A (en) * | 1989-05-23 | 1997-04-15 | Mitsubishi Rayon Co., Ltd. | Edible film and method of making same |
WO2002002705A1 (fr) * | 2000-07-03 | 2002-01-10 | Centre De Valorisation Des Glucides Et Produits Naturels | Composition, kits et procede pour conferer a un substrat des proprietes barrieres et leurs utilisations |
US20200002572A1 (en) * | 2016-09-01 | 2020-01-02 | Sm Technology Holdings Llc | Biobased carrier coatings |
FR3075215A1 (fr) * | 2017-12-19 | 2019-06-21 | Lactips | Materiau thermoplastique biodegradable a base de caseine et/ou de caseinate |
Also Published As
Publication number | Publication date |
---|---|
CA3225189A1 (fr) | 2022-12-29 |
KR20240032864A (ko) | 2024-03-12 |
AU2022296834A1 (en) | 2024-01-18 |
EP4359315A1 (fr) | 2024-05-01 |
FR3124429A1 (fr) | 2022-12-30 |
CN117813244A (zh) | 2024-04-02 |
BR112023027357A2 (pt) | 2024-03-12 |
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