EP4363517A1 - Matériau recyclable - Google Patents

Matériau recyclable

Info

Publication number
EP4363517A1
EP4363517A1 EP22743742.3A EP22743742A EP4363517A1 EP 4363517 A1 EP4363517 A1 EP 4363517A1 EP 22743742 A EP22743742 A EP 22743742A EP 4363517 A1 EP4363517 A1 EP 4363517A1
Authority
EP
European Patent Office
Prior art keywords
recyclable material
weight
recyclable
additive
mixture
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP22743742.3A
Other languages
German (de)
English (en)
Inventor
Beat Karrer
Angelika ZYS
Francesca TANCINI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FluidSolids AG
Original Assignee
FluidSolids AG
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 FluidSolids AG filed Critical FluidSolids AG
Publication of EP4363517A1 publication Critical patent/EP4363517A1/fr
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J189/00—Adhesives based on proteins; Adhesives based on derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
    • C08L1/02—Cellulose; Modified cellulose
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • B29B13/06—Conditioning or physical treatment of the material to be shaped by drying
    • B29B13/065—Conditioning or physical treatment of the material to be shaped by drying of powder or pellets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/02—Making granules by dividing preformed material
    • B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/30—Auxiliary operations or equipment
    • B29C64/307—Handling of material to be used in additive manufacturing
    • B29C64/314—Preparation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/05—Alcohols; Metal alcoholates
    • C08K5/053—Polyhydroxylic alcohols
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L5/00—Compositions of polysaccharides or of their derivatives not provided for in groups C08L1/00 or C08L3/00
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L89/00—Compositions of proteins; Compositions of derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L89/00—Compositions of proteins; Compositions of derivatives thereof
    • C08L89/04—Products derived from waste materials, e.g. horn, hoof or hair
    • C08L89/06—Products derived from waste materials, e.g. horn, hoof or hair derived from leather or skin, e.g. gelatin
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J189/00—Adhesives based on proteins; Adhesives based on derivatives thereof
    • C09J189/04—Products derived from waste materials, e.g. horn, hoof or hair
    • C09J189/06—Products derived from waste materials, e.g. horn, hoof or hair derived from leather or skin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/003—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor characterised by the choice of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/006—Pressing and sintering powders, granules or fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0001—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor characterised by the choice of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/05—Filamentary, e.g. strands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2001/00—Use of cellulose, modified cellulose or cellulose derivatives, e.g. viscose, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2001/00—Use of cellulose, modified cellulose or cellulose derivatives, e.g. viscose, as moulding material
    • B29K2001/08—Cellulose derivatives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2089/00—Use of proteins, e.g. casein, gelatine or derivatives thereof, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/0058—Liquid or visquous
    • B29K2105/0073—Solution
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/16—Fillers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

Definitions

  • the invention relates to a recyclable material which is suitable for producing molded parts, a method for producing a molded part from the recyclable material and a molded part produced therefrom.
  • plastics made from renewable, natural raw materials have therefore increasingly been used, in particular for the manufacture of disposable objects used.
  • the problem here is that many of these plastics are primarily based on raw materials that are also used as food, such as potatoes, rice or corn.
  • the object of the invention is to create a reusable material which is suitable for forming different shaped parts, the material being particularly easy to form and after use it can be recycled or disposed of in an environmentally friendly manner, in particular composted.
  • the material comprises 30-97% by weight of cellulose material, 2-45% by weight of at least one protein binder, 1-20% by weight of at least one alcohol or ester and 0-45% by weight of at least one additive.
  • the material consists entirely of natural raw materials and is therefore environmentally friendly. Due to the high content of cellulosic material, the material or a molded part made from this material can be fed into the recycling cycle of paper, cardboard and cardboard and can therefore be recycled easily and repeatedly. In addition, the material is completely compostable, even in the home compost, which enables environmentally friendly disposal. Furthermore, by using a protein binder, the material can be shaped as easily as a thermoplastic.
  • recyclable material is understood to mean a material which is processed and whose main component, in this case the cellulose material, can then be used as a starting material for the production of new material, in this case paper, cardboard or cardboard.
  • the material according to the invention or a molded part formed from it can be dissolved with water, e.g. in a pulper, after which the cellulose material can be separated and further processed into paper, cardboard or cardboard.
  • the other substances present in the material are preferably completely biodegradable or present in such a small amount that they are unproblematic, so that the material can be disposed of easily and in an environmentally friendly manner, in particular via the waste water.
  • the protein binder and any other components of the material can also be isolated and reused by suitable processing methods.
  • the material or a molded part formed from it is not to be recycled, it can be completely decomposed in the compost.
  • the materials used allow for complete decomposition both in domestic compost and in industrial compost in accordance with the standards of DIN/EN 13432:2000.
  • the material or a molded part formed from it is harmlessly degradable in nature and in water in accordance with the requirements of ISO 16221:2001.
  • the material has thermoplastic properties during processing, especially when a solvent such as water is added or when exposed to heat, and can therefore be processed into molded parts using the methods known from polymer processing, for example by injection molding, extrusion, pressing, casting, rotational molding or vacuum molding .
  • the material can also be processed into a molded part by sintering or with a 3D printer.
  • the reusable material according to the present invention therefore represents an environmentally friendly alternative to petroleum-based plastics.
  • the cellulosic material is preferably in the form of fibers or a powder. If the cellulose material is in the form of a powder, this has an average particle size of 100-1000, preferably 150-250, microns.
  • the cellulosic material is preferably in an amount of 30-97% by weight, particularly preferably 40-90% by weight, particularly preferably 51-85% by weight, very particularly preferably 60%-80% by weight % in the recyclable material.
  • a protein binder is understood to mean a protein or a protein mixture which has the properties of an adhesive and can harden. Protein binders can be softened by the application of heat and/or the addition of water, thereby deforming the material. By using the at least one protein binder, a thermoplastic behavior of the recyclable material according to the invention can be achieved.
  • the at least one protein binder is preferably present in the recyclable material in a concentration of 2-45% by weight, more preferably 10-30% by weight, particularly preferably 15-25% by weight.
  • the at least one alcohol and/or the at least one ester improves the flowability of the recyclable material according to the invention, which facilitates the processing of the material into a molded part.
  • the recyclable material comprises 1-20% by weight, preferably 3-17% by weight, particularly preferably 6-15% by weight of at least one alcohol and/or ester.
  • the material according to the invention can have at least one additive.
  • an additional physical, optical, haptic or chemical property can be added to the material or such a property can be changed in a targeted manner.
  • the material with a Dye or colored by pigments can be changed in a targeted manner.
  • the at least one additive is preferably biodegradable and/or recyclable.
  • At least one dye or at least one color pigment is preferably used as an additive, in particular charcoal, a vegetable dye, preferably from a vegetable or a fruit, e.g. beetroot or carrot.
  • any shaped parts can be produced, in particular packaging, filling material, furniture parts, everyday objects, decorative items, cutlery, plates, bags, etc.
  • the cellulosic material preferably comprises cellulose, a cellulose derivative, lignin, paper or board, or a mixture thereof.
  • Used paper and/or cardboard can thus also be used for the recyclable material according to the invention.
  • the recyclable material or a molded part made from it can be integrated into the recycling cycle of paper and cardboard, which means that it can be produced in a particularly resource-saving and environmentally friendly manner.
  • cellulose material can also be used as the cellulose material, which originates from a material according to the invention or a molded part produced from it, which has been dissolved in water. Therefore, the cellulosic material of the recyclable material according to the present invention can also be reused for the production of new material according to the invention.
  • Methyl cellulose or hydroxymethyl cellulose is preferably used as the cellulose derivative.
  • Cellulose fibers, microcellulose or also hemicellulose can be used as the cellulose.
  • the at least one protein binder preferably comprises a vegetable protein binder, in particular from cereals, soybeans, almonds, hemp, peas, lupine, pumpkin, manioc, sunflowers or a mixture thereof.
  • the grain is preferably wheat, rye, barley, oats, rice, corn, sorghum or a mixture thereof.
  • the protein binder preferably comprises at least one animal protein binder, in particular a gluten glue, gelatin, collagen, keratin, casein, albumin or a mixture thereof.
  • the gluten glue is preferably bone glue, hide glue, rabbit glue, fish glue or a mixture thereof.
  • the at least one alcohol preferably has 1 to 50 carbon atoms.
  • the alcohol is preferably an alcohol having 2 to 30 carbon atoms, more preferably 2 to 15 carbon atoms.
  • the at least one alcohol can be linear or branched.
  • the at least one alcohol can be a monohydric alcohol, but is preferably a polyhydric alcohol, in particular having 2 to 15 hydroxy groups, preferably from 2 to 10 hydroxy groups, in particular from 2 to 6 hydroxy groups.
  • the at least one alcohol is preferably selected from polyglycerol-3 (CAS 25618-55-7), glycerol ethoxylate (CAS 316954-55-0), pentaerythritol ethoxylate (CAS 30599-15-6), polyethylene glycol E400 (CAS 25322-68-3) , Glycerin (CAS 56-81-5), 1,2-Propanediol (CAS 57-55-6), Dipentaerythritol (CAS 126-58-9), Pentaerythritol (CAS 1 15-77-5), Ethylene Glycol (CAS 107 -21-1), diethylene glycol (CAS 1 1 1-46-6), triethylene glycol (CAS 1 12-27-6), or a mixture thereof.
  • polyglycerol-3 CAS 25618-55-7
  • glycerol ethoxylate CAS 316954-55-0
  • pentaerythritol ethoxylate CAS 30599-15-6
  • polyethylene glycol E400 CAS 25
  • the at least one ester is preferably a carboxylic acid ester and preferably has from 2 to 22 carbon atoms, in particular 6 to 12 carbon atoms.
  • the at least one ester can be a monoester, but is preferably a polyester.
  • the at least one ester is particularly preferably an alkyl citrate or glycerol acetate, in particular triethyl citrate (CAS 77-93-0) or glycerol triacetate (CAS 102-76-1).
  • the recyclable material according to the invention preferably comprises starch, at least one monosaccharide, at least one oligosaccharide or at least one polysaccharide or a mixture thereof as an additive.
  • Such sugar compounds act as an additional binder in the recyclable material, increasing the strength of the recyclable material increased or the amount of at least one protein binder can be reduced with the same strength of the material.
  • the additive is selected from wheat starch, potato starch, rice starch, tapioca starch, dextrins, agar, alginates, pectins, chitin, cyclodextrins or mixtures thereof. More preferably, the additive can include saccharides from extracts of algae, fruits, vegetables and/or cereals.
  • Glucose fructose, galactose, sucrose, maltose, lactose, maltodextrin, dextrose, isomalt, erythritol, mannitol, xylitol, sugar syrups, invert sugar syrups or a mixture thereof can also preferably be used as an additive.
  • sorbitol CAS 50-70-4
  • xylitol CAS 87-99-0
  • mannitol CAS 69-65-8
  • sucrose CAS 57-50-1
  • trehalose CAS 6138-23-4
  • a mixture thereof used as an additive.
  • the recyclable material includes urea and/or allantoin as an additive. This improves the flow properties of the material before it dries or hardens, making it easier to process the material into a molded part, e.g. when casting.
  • the recyclable material preferably includes a preservative as an additive. This allows the recyclable material to be stored longer before it is processed into a molded part.
  • a preservative preferably ascorbic acid or citric acid or salts thereof, a sorbate, plant extracts or a mixture thereof is used.
  • methyl 4-hydroxybenzoate or propyl 4-hydroxybenzoate can also be used as a preservative.
  • the recyclable material preferably comprises at least one animal or vegetable fat as an additive. The addition of a fat can improve the granulation of the recyclable material.
  • Linseed oil, castor oil, rapeseed oil, sunflower oil, fat powder, medium-chain triglycerides or a mixture thereof can be used as the at least one fat.
  • the recyclable material preferably comprises at least one natural wax as an additive, in particular carnauba wax, candelilla wax, sugar cane wax, beeswax or stearin or a mixture thereof.
  • the recyclable material includes at least one mineral as an additive.
  • the at least one mineral is mica, wollastonite, iron oxide, bentonite, hydromagnesite, chalk, gypsum, lithopone, huntite, talc, magnesium oxide, magnesium carbonate, kaolin, calcium carbonate, vermiculite, silicates, perlite, or a mixture thereof.
  • the mechanical properties of the recyclable material or a molded part formed from it can be influenced. Furthermore, by adding at least one mineral, pigmentation or coloring of the recyclable material can be achieved and the homogeneity of a surface of a molded part produced therefrom can be improved. In addition, the flow properties of the recyclable material can be specifically improved by the at least one mineral.
  • the present application also relates to a method for producing a molded part from a recyclable material.
  • a first step 30-97% by weight of cellulose material, 2-45% by weight of at least one protein binder, 1-20% by weight of at least one alcohol or ester, and 0-45% by weight of at least one additive and water as a solvent in a mixer.
  • the components are then mixed with the mixer to form the recyclable material, with the molded part then being formed from it.
  • the protein binder it must be dissolved in warm or boiling water before it is added.
  • Components in powder form are preferably dissolved in water beforehand, with heating and/or agitation, if necessary.
  • a planetary stirrer, an eccentric screw pump, propeller stirrer, disk stirrer, extruder or magnetic stirrer is preferably used as the mixer.
  • the components are mixed preferably from 1 to 40 minutes, preferably from 1 to 10 minutes.
  • the recyclable material is extruded into a strand and the shaped part is then formed from the strand of recyclable material, the shaped shaped part then being dried.
  • the reusable material is preferably extruded into a strand after mixing, and the strand is comminuted into granules, with the shaped part then being formed from the granules and the formed shaped part then being dried.
  • the granules are preferably dried.
  • the granules are preferably stored prior to forming the molded part. During storage, the granulate can be transported. This offers the advantage that the granules and the molded part can be produced at different geographical locations and at different times.
  • the granules can be heated to form the molded part, also under pressure.
  • the granules can also be liquefied using a suitable solvent, preferably water, before moulding.
  • the extrusion is preferably carried out at a pressure of from 40 to 180 bar, preferably from 60 to 140 bar, particularly preferably from 80 to 120 bar.
  • the reusable material is preferably dried after mixing and comminuted to a powder, in particular with a particle size of less than 0.10 mm, in particular less than 0.05 mm, and the molded part is then formed from the powder.
  • the powder is preferably stored prior to forming the part. During storage, the powder can be transported. This offers the advantage that the powder and the molded part can be produced at different geographical locations and at different times.
  • the powder can be heated, also under pressure, to form the shaped part.
  • the powder can also be liquefied using a suitable solvent, preferably water, before moulding. If the material is liquefied before molding the molding, the molding is dried after molding.
  • the powder made from the recyclable material according to the invention is particularly suitable for shaping the molded part by means of 3D printing, in particular by means of multi-jet modeling processes.
  • the molded part is preferably formed by pressing, casting, extrusion, rotational moulding, vacuum moulding, injection moulding, sintering or 3D printing.
  • the present application also relates to a molded part made from a recyclable material as described above.
  • the molded part is preferably packaging, filling material, furniture part,
  • Utility item decorative item, cutlery, plate or bag.
  • a first example approximately 134 g of rabbit glue were mixed with 250 g of boiling water and heated to 70° C. in a water bath for 20 minutes. 101g bovine milk casein (13.5-15% nitrogen) was then added to the mixture and mixed vigorously to form the binder component. 40g glucose and 16g magnesium sulfate were dissolved in boiling water (glucose in 40g water and magnesium sulfate in 20g water) and added to the binding mixture and mixed. When the mixture was homogeneous, 1.6 g of methyl 4-hydroxybenzoate and propyl 4-hydroxybenzoate (69:31) were added and mixed.
  • the intermediate was mixed with liquid additives and fiber, ie 64 g sorbitol, 12 g castor oil was added to the mixture and mixed vigorously.
  • 432 g of fiber (flydroxypropylmethyl cellulose and cellulose of about 200 mg/l, in the ratio 50:50) were added and mixed vigorously in a planetary mixer (10 L rotor agitator).
  • the material was extruded in a hydraulic press (Lindenberg press, 60 tons) at a pressure of about 140 bar through a pressing device consisting of a piston and stamp with a nozzle of 2 mm diameter to form a strand. After curing, the strand was cut into pieces 2 mm in length and the granules thus obtained were then processed into a molded part by means of injection molding, which was then dried.
  • example 2 In a second example, 1.6 g of potassium benzoate and 16 g of magnesium sulfate were dissolved in 250 g of boiling water. Then 116 g of glycerin was added to the mixture.
  • the powdery mixture and the liquid mixture were mixed together to obtain a binder component.
  • the material was extruded in a hydraulic press at a pressure of approx. 140 bar through a pressing device consisting of a piston and a ram with a nozzle with a diameter of 2 mm to form a strand. After curing, the strand was cut into pieces 2 mm in length and the granules thus obtained were then further processed by injection molding to form a molded part, which was then dried.
  • 109.2 g of soy protein isolate (with typical nutritional information: 90% by weight protein, 1.5% by weight fat, 1.8% by weight carbohydrates, 0.5% by weight salt) were mixed with 109.2 g tapioca starch (with typical Nutritional information: 0.2% by weight protein, ⁇ 0.1% by weight fat, 87.8% by weight carbohydrates, ⁇ 0.1% by weight salt), 40 g xanthan gum, 2 g of a mixture of methyl 4-hydroxybenzoate and propyl 4-hydroxybenzoate (69:31) and 416 g cellulose fibers (of approx. 150 mg) mixed in a bowl.
  • the material was extruded in a hydraulic press at a pressure of approx. 140 bar through a pressing device consisting of a piston and a ram with a nozzle with a diameter of 2 mm to form a strand. After curing, the strand was cut into pieces 2 mm in length and the granulate thus obtained was then injection molded into a molded part, which was then dried.
  • example 4 In a fourth example, 16 g lactose, 24 g maltodextrin, 1.6 g potassium benzoate and 16 g magnesium sulfate were dissolved in 330 g boiling water. Then 107.2 g of fish glue was added and mixed and heated in a water bath at 70°C for 20 minutes. 107.2 g gluten protein (with typical nutritional information: 80% by weight protein, 3.8% by weight
  • the powdery mixture and the liquid mixture were mixed together.
  • the material was extruded in a hydraulic press at a pressure of approx. 140 bar through a pressing device consisting of a piston and a ram with a nozzle with a diameter of 2 mm to form a strand. After curing, the strand was cut into pieces 2 mm in length and the granulate thus obtained was then injection molded into a molded part, which was then dried.
  • Example 5 In a fifth example, 134 g of gelatin was mixed with 310 g of boiling water and heated in a water bath at 70°C for 20 minutes.
  • albumin with pea protein isolate 1 1 (with typical nutritional information: 80% by weight protein, 5.5% by weight fat, 2.6% by weight carbohydrates, 1.9% by weight salt) and approx. 38 g maltodextrin mixed.
  • the powdery mixture and the liquid mixture were mixed together to obtain a binder component.
  • the material was extruded in a hydraulic press at a pressure of approx. 140 bar through a pressing device consisting of a piston and a ram with a nozzle with a diameter of 2 mm to form a strand. After curing, the strand was cut into pieces 2 mm in length and the granules thus obtained were then processed into a molded part by means of injection molding, which was then dried.
  • a quantity of granules of the recyclable material was placed in a pressing tool which has the contour of the molded part to be produced.
  • the tool was heated in a heated press to a temperature of 150°C, the granules were filled in and pressed for 2 minutes with a pressure of 1 kg/cm 2 . Thereafter, the tool with the molded part was removed from the press, cooled to a temperature of 50° C., and then the molded part produced was removed.
  • powder can also be used for processing by sintering.
  • Granulate from the recyclable material was processed into profiles with various cross-sections using an extrusion line (Weber ES45) with a short compression screw at an operating temperature of 120°-140°C.
  • a powder made from the recyclable material was poured into the designated container of a 3D printer that works according to the multi-jet modeling process (ZPrinter ⁇ 150 from 3DSystems) and the original binder from Z-Corp was replaced with water. After the printing process, the molding was removed and dried.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Optics & Photonics (AREA)
  • Dermatology (AREA)
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Abstract

La présente invention concerne un matériau recyclable. Le matériau recyclable contient 30 à 97 % en poids de matière cellulosique, 2 à 45 % en poids d'au moins un liant protéique, 1 à 20 % en poids d'au moins un alcool ou un ester ainsi que 0 à 45 % en poids d'au moins un additif. La présente invention concerne en outre un procédé de fabrication d'un matériau recyclable ainsi qu'une pièce moulée réalisée dans ce matériau.
EP22743742.3A 2021-06-29 2022-06-23 Matériau recyclable Pending EP4363517A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH00756/21A CH718777A1 (de) 2021-06-29 2021-06-29 Wiederverwertbares Material.
PCT/EP2022/067258 WO2023274851A1 (fr) 2021-06-29 2022-06-23 Matériau recyclable

Publications (1)

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EP4363517A1 true EP4363517A1 (fr) 2024-05-08

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US (1) US20240294736A1 (fr)
EP (1) EP4363517A1 (fr)
JP (1) JP2024523626A (fr)
KR (1) KR20240027051A (fr)
CN (1) CN117980434A (fr)
AU (1) AU2022305591A1 (fr)
CH (1) CH718777A1 (fr)
WO (1) WO2023274851A1 (fr)

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Publication number Priority date Publication date Assignee Title
FR2301497A1 (fr) * 1975-02-24 1976-09-17 Sumitomo Chemical Co Composition d'engrais
GB2206888B (en) * 1987-07-07 1991-02-06 Warner Lambert Co A destructurized starch and a process for making same
AT393272B (de) * 1989-06-07 1991-09-25 Rettenbacher Markus Dipl Ing Verfahren zur herstellung von extrudierten, direkt expandierten biopolymerprodukten und holzfaserplatten, verpackungs- und isoliermaterialien
US5810961A (en) * 1993-11-19 1998-09-22 E. Khashoggi Industries, Llc Methods for manufacturing molded sheets having a high starch content
US5362776A (en) * 1993-07-21 1994-11-08 Packaging Corporation Of America Recyclable cellulosic packaging material
DE19802718C2 (de) * 1998-01-24 2002-02-21 Hubert Loick Vnr Gmbh Thermoplastische, kompostierbare Polymerzusammensetzung
CN101591522B (zh) * 2009-06-29 2011-04-27 浙江大学 改性玉米蛋白胶粘剂及环境友好型刨花板的制备方法
DE102014019214A1 (de) * 2014-12-23 2016-06-23 Bio-Tec Biologische Naturverpackungen Gmbh & Co.Kg Verfahren zur Herstellung von Formteilen
US10023777B2 (en) * 2016-12-15 2018-07-17 The United States Of America, As Represented By The Secretary Of Agriculture Adhesive compositions and methods of adhering articles together

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CN117980434A (zh) 2024-05-03
US20240294736A1 (en) 2024-09-05
AU2022305591A1 (en) 2024-02-08
JP2024523626A (ja) 2024-06-28
WO2023274851A1 (fr) 2023-01-05
KR20240027051A (ko) 2024-02-29

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