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WO2011088966A1 - Stratifié intelligent et récipient intelligent formé à partir de celui-ci - Google Patents

Stratifié intelligent et récipient intelligent formé à partir de celui-ci Download PDF

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Publication number
WO2011088966A1
WO2011088966A1 PCT/EP2011/000108 EP2011000108W WO2011088966A1 WO 2011088966 A1 WO2011088966 A1 WO 2011088966A1 EP 2011000108 W EP2011000108 W EP 2011000108W WO 2011088966 A1 WO2011088966 A1 WO 2011088966A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
repulpable
laminate
container
paper
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2011/000108
Other languages
English (en)
Inventor
Risto Vapola
Juhani Lahtela
Braco Krajnovic
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.)
Huhtamaki Oyj
Original Assignee
Huhtamaki Oyj
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 Huhtamaki Oyj filed Critical Huhtamaki Oyj
Priority to EP11700727A priority Critical patent/EP2526025A1/fr
Priority to MX2012008547A priority patent/MX2012008547A/es
Priority to CA2787695A priority patent/CA2787695A1/fr
Priority to CN2011800068579A priority patent/CN102712380A/zh
Priority to AU2011208905A priority patent/AU2011208905A1/en
Publication of WO2011088966A1 publication Critical patent/WO2011088966A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/30—Multi-ply
    • D21H27/32—Multi-ply with materials applied between the sheets
    • 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
    • B31F1/0003—Shaping by bending, folding, twisting, straightening, flattening or rim-rolling; Shaping by bending, folding or rim-rolling combined with joining; Apparatus therefor
    • B31F1/0045—Bending or folding combined with joining
    • B31F1/0048—Bending plates, sheets or webs at right angles to the axis of the article being formed and joining the edges
    • B31F1/007—Bending plates, sheets or webs at right angles to the axis of the article being formed and joining the edges for making articles with multilayered walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/10—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B29/00—Layered products comprising a layer of paper or cardboard
    • B32B29/002—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B29/005—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material next to another layer of paper or cardboard 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D3/00—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines
    • B65D3/02—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines characterised by shape
    • B65D3/06—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines characterised by shape essentially conical or frusto-conical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D3/00—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines
    • B65D3/22—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines with double walls; with walls incorporating air-chambers; with walls made of laminated material
    • 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
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2105/00—Rigid or semi-rigid containers made by assembling separate sheets, blanks or webs
    • B31B2105/001—Rigid or semi-rigid containers made by assembling separate sheets, blanks or webs made from laminated webs, e.g. including laminating the webs
    • 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
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2105/00—Rigid or semi-rigid containers made by assembling separate sheets, blanks or webs
    • B31B2105/002—Making boxes characterised by the shape of the blanks from which they are formed
    • B31B2105/0022—Making boxes from tubular webs or blanks, e.g. with separate bottoms, including tube or bottom forming operations
    • 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
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/26—Folding sheets, blanks or webs
    • B31B50/28—Folding sheets, blanks or webs around mandrels, e.g. for forming bottoms
    • 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
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/74—Auxiliary operations
    • B31B50/742—Coating; Impregnating; Waterproofing; Decoating
    • B31B50/743—Coating or impregnating edges or corners
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/26—All layers being made of paper or paperboard
    • 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
    • B32B2255/12—Coating on the layer surface on paper 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/20—Inorganic 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/26—Polymeric 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
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/028—Paper 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
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04—Impregnation, embedding, or binder 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
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04—Impregnation, embedding, or binder material
    • B32B2260/046—Synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/31—Heat sealable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/716—Degradable
    • B32B2307/7163—Biodegradable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
    • 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
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2439/00—Containers; Receptacles
    • B32B2439/70—Food packaging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2565/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D2565/38—Packaging materials of special type or form
    • B65D2565/381—Details of packaging materials of special type or form
    • B65D2565/385—Details of packaging materials of special type or form especially suited for or with means facilitating recycling
    • 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
    • D21H19/80—Paper comprising more than one coating
    • D21H19/84—Paper comprising more than one coating on both sides of the substrate
    • 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
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/16—Sizing or water-repelling agents
    • 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
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/10—Packing paper
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
    • Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics

Definitions

  • the present invention relates to a completely repulpable and recyclable laminate as defined below and a container, preferably a cup, based essentially on cellulosic material for water containing foodstuff formed of a laminate comprising
  • an adjacent tie layer based on an at least repulpable, preferably biodegradable adhesive having at least a water absorption capacity per g/m 2 over 24 hours allowing a Cobb value of up to 25 g/m 2 (120 sec) of layer c),
  • So called fast food restaurants are a major and growing supplier of nutrition.
  • the logical concept of fast food restaurants is based on the single use package.
  • Single use means that after the consumption of the food, the package of the food is discarded.
  • Such packages may consist of both cellulosic material, predominantly in form of fibres, like paper, paper board or other molded fibre items, or plastic materials like polyethylene, polypropylene or polyethylenterephtalate or of a mixture of cellulosic material and plastic material, a waste management based on recycling the material could be difficult, even impossible.
  • this waste consists of a mixture of plastic material and cellulosic material typically. In order to recycle this waste, it is necessary to separate the different materials which could be recycled after separation from each other.
  • This object is solved by providing a completely repulpable and recyclable laminate based essentially on cellulosic material, preferably for the formation of a preferably single use container for water containing foodstuff, which laminate comprises
  • an adjacent tie layer based on an at least repulpable, preferably biodegradable adhesive having at least a water absorption capacity per g/m 2 over 24 hours allowing at least a Cobb value of up to 25 g/m 2 (120 sec, DIN EN 20535: 1994) of layer c),
  • a preferably heat sealing layer applied at least to the areas which have to be joined for the later formation of a container and based on an at least repulpable, preferably biodegradable resin.
  • Layer a) of the laminate, optionally the outside layer of a container formed of the inventive laminate is an optionally coated paper layer having a weight of 100 - 350 g/m 2 , preferable a weight of >150 g/m 2 .
  • This layer is preferably a paper board, which guarantees the required mechanical properties of an inventive container formed of the inventive laminate.
  • such paper board used as outside layer a) contains already recycled fibres.
  • the surface of layer a) forming the outside surface of an inventive container formed of an inventive laminate can be coated with an at least repulpable, preferably biodegradable coating such as a clay coating, a polyvinylalcohol coating or a starchcoating, which coating is preferably at least water soluble or water
  • the outer layer a) of the inventive laminate is tied to the layer c), the moisture resistant liner paper, which becomes the innermost layer of a container formed of an inventive laminate, by means of a tie layer b).
  • the tie layer b) ties the outer layer a) preferable the paper board, to the layer c) based on liner paper.
  • this tie layer b) is based on an at least repulpable, preferably
  • biodegradable and heat-activatable adhesive having a certain water absorption capacity per g/m 2 over 24 hours before losing its cohesion.
  • the at least repulpable adhesive is blended with a water absorbing compound in an amount sufficient to achieve at least a water absorption capacity per g/m 2 over 24 hours allowing a Cobb value of up to 25 g/m 2 (120 sec determined according to DIN EN 20535: 1994) of layer c).
  • a water absorbing compound is an at least repulpable, preferably biodegradable, natural or synthetic compound.
  • microcrystalline cellulose with 11 wt. % carboxymethylcellulose sodium microcrystalline cellulose with 11 wt. % carboxymethylcellulose sodium
  • carboxymethylcellulose sodium, locust bean flour, citrus pectin, starch, alginate, guar flour, iota-carrageenan, karaya gum, gellan gum, galactomannan, tara stone flour, apple pectin, lemon peel pectin, sodium hyaluronate, tragacanth, tara gum and xanthan gum can be used, which compounds preferably are gelling compounds.
  • an alginate like a natural, partially natural and/or synthetic alginate, preferable originating from algae, most preferably from brown algae can be blended with the at least repulpable adhesive.
  • super-absorbent resins preferably super-absorbent crosslinked polyacrylates, preferably sodium- or ammonium-neutralized, can be used, which are at least repulpable, preferably biodegradable.
  • the natural as well as the synthetic compounds with water absorption capacity are preferably provided as powder in order to be blended with the adhesive more easily.
  • the preferably heat activatable adhesive blended with the water absorbing compound has a melting point > 70°C and loses its cohesion after the mentioned water absorption capacity has been exceeded.
  • This kind of water buffering property of the tie layer allows that the liner paper as the inside layer c) of an inventive container formed of an inventive laminate to have a certain minimum water permeability before losing its cohesion which is necessary to be repulpable.
  • the moisture buffering ability of the tie layer is a precondition to provide a completely repulpable container, formed of the inventive laminate, although foodstuff containing water like beverages can be served in the inventive container, preferably a single use cup, formed of an inventive laminate.
  • the preferably heat activatable adhesive is based on an at least repulpable, preferably biodegradable resin, preferably an at least hot water soluble resin selected from the groups comprising polyethylenvinylalcohol, polyacrylates like polyethylacrylate, polypropylacrylate, polymethacrylates like polyethylmethacrylate or polypropylmethacrylate, polyacrylic acid, copolymers of acrylic acid like an
  • ethylene/acrylic-acid-copolymer a ethylene/butylene/acrylic acid copolymer, a butylene acrylic acid copolymer, methacrylic-acid copolymers like
  • ethylene/methacrylic-acid copolymer polyethylene/vinylacetate and a mixture thereof.
  • the weight of layer b) is preferably from 2 to 10 g/m 2 , more preferably 4 to 8 g/m 2 .
  • the tie layer has to co-function with the layer c), which is the inner layer of the container formed of the inventive laminate and is in direct contact with the foodstuff containing water.
  • This liner paper has a moisture resistant impregnation allowing a Cobb value of 1 - 25 g/m 2 (120 sec), preferably 10 - 15 g/m 2 (120 sec), measured according to DIN EN 20535:1994.
  • the low water permeability is necessary in order to guarantee
  • the liner paper by having at least a water absorption capacity per g/m 2 over 24 hours allowing a Cobb value of up to 25 g/m 2 (120 sec) for layer c), a container can be used for food containing water and is also repulpable completely.
  • an at least repulpable, preferably biodegradable hydrophobing agent is used in an amount to achieve the required Cobb value.
  • the hydrophobing agent is based on an at least repulpable, preferably biodegradable hydrogenated triglyceride or a blend of natural, partially or fully hydrogenated triglyceride is used.
  • the hydrogenated triglyceride is selected from the group comprising hydrogenated vegetable oil, preferably soybean oil, peanut oil, olive oil, palm oil, coconut oil and/or cotton seed oil, and an animal fat preferably a beef tallow, pork lard, poultry grease and/or fish oil. Most preferably a vegetable oil is used.
  • the hydrogenated triglycerides have preferably a carbon-chain-length of 10 - 20. Contrary to waxes like paraffin waxes used traditionally for hydrophobing the inner layer of a preferably single use container for water containing foodstuff, the hydrogenated triglycerides allow repulping at normal repulping conditions according to standard repulping processes.
  • the hydrogenated triglyceride hydrophobing impregnation can be easily removed with normal foam tank separation processes because the triglyceride particles formed and dispersed in water during repulping then float on the cool water and are not attracted to the paper fibres. Therefore, the hydrogenated triglyceride particles can be easily separated from the paper fibres, which can be repulped, whereas the triglyceride particles can be biodegraded.
  • hydrogenated triglyceride for impregnating and/or coating paper or paper board allow a repulping rate, equal to those of untreated paper or paperboard or any other kind of untreated cellulosic material.
  • hydrogenated triglycenides are used for the hydrophobing impregnation.
  • the liner paper used in layer c) has a weight of 30 - 45 g/m 2 .
  • the liner paper is based on finely-ground wood-fibers.
  • the liner paper consists entirely of materials from renewable sources.
  • the liner paper has to cover the entire inside of the container, preferably including any open edges at the inside of the container.
  • the liner paper having the above described Cobb value can protect the adhesive layer b) and the outer layer a), preferable made of paper board, from any direct contact with the contained foodstuff comprising water. Consequently, the tie layer b) cannot be dissolved by any direct contact with the contained foodstuff especially not with the water of the food stuff.
  • layer a) is protected by a further layer c) with the hydrophobing impregnation like-layer c), such a further layer with a hydrophobing impregnation, namely layer c ' ), can be tied to layer a) by means of a further tie layer, namely layer b ' ) having also the already described water absorption capacity.
  • This further layer c ' ) will be preferably the outside layer of an inventive container formed from this inventive laminate.
  • a further object of the present invention is completely repulpable and recyclable a laminate based essentially on cellulosic material, consisting of c ' ) a moisture resistant liner paper as surface layer with a weight of 30 - 45 g/m 2 and impregnated with a hydrophobing, at least repulpable, preferably biodegradable agent to the extent that said impregnated liner paper has a Cobb value of about 1 - 25 g/m 2 (120 sec)
  • an adjacent tie layer based on an at least repulpable, preferably biodegradable adhesive having at least a water absorption capacity per g/m 2 over 24 hours allowing a Cobb value of up to 25 g/m 2 (120 sec) of layer c " )
  • an adjacent tie layer based on an at least repulpable, preferably biodegradable adhesive having at least a water absorption capacity per g/m 2 over 24 hours allowing a Cobb value of up to 25 g/m 2 (120 sec) of layer c)
  • a moisture resistant liner paper with a weight of 30 - 45 g/m 2 and impregnated with a hydrophobing, at least repulpable, preferably biodegradable agent to the extent that said impregnated liner paper has a Cobb value of about 1 - 25 g/m 2 (120 sec, DIN EN 20535: 1994)
  • a preferably heat sealing layer applied at least in the areas which have to be joined for the later formation of a container and based on an at least
  • the layer c ' ) as well as layer b ' ) are composed of the materials already disclosed in the present description for layer c) respectively layer b).
  • the laminate has preferably at least in the areas, which have to be joined for the formation of the container or as a complete layer over the whole surface layer c) a preferably heat sealing layer d), which preferably can be activated by heat, preferably by hot air, to form a sealing bond.
  • This heat sealing layer d) is preferably based on a at least repulpable, preferably biodegradable, thermoplastic resin with heat sealing properties such as polyethylenvinylalcohols or (meth)acrylic-acid copolymers. Therefore, the heat sealing layer d) is also repulpable and optionally recyclable.
  • the heat sealing layer d) amounts to 8 - 20 g/m 2 , more preferably to 10 to 16 g/m 2 , and is preferably applied by coating, whereby for joining the parts of the laminate to form the inventive container, the joining regions are activated by heating, preferably by means of hot air, and combined by pressing.
  • a further object of the present invention is a completely repulpable and recyclable container, preferably a cup, based essentially on cellulosic material for water containing foodstuff formed of an inventive laminate comprising layers a) to d), whereof layer a) is the outside layer of the inventive container, preferably a single use cup.
  • a further embodiment of the present invention relates completely repulpable and recyclable container, preferably a cup, more preferably a single use cup based essentially on cellulosic material for water containing foodstuff formed of an inventive laminate consisting of layers c ⁇ ), b ' ) and layers a) to layer d).
  • the term "Completely repulpable and recyclable” means that the whole contents of cellulosic material of the inventive container is repulpable and recyclable and the contents of non-cellulosic material is at least repulpable according to standard paper mill processes with standard process conditions without relying on any specially configured repulping equipment.
  • the non-cellulosic material of the inventive container which is at least repulpable according to the before described definition, is water dispersable or water soluble. Therefore, it can not only be repulped, but also at least partially be recycled into standard paper manufacturing processes or be degraded biologically according to DIN EN 13432.
  • the amount of non-cellulosic material of an inventive laminate respectively of an inventive container is at most 15 % by weight, preferably at most 2,5 % by weight of the whole laminate or container, the higher value depending whether the free surface of layer a) is coated and on which material such coating is based.
  • inventive laminates can be produced according to known manufacturing processes preferably by laminating and/or coating and/or extrusion.
  • the tying of layer a) to layer c), respectively to layer c ' ) can be carried out by activating the activatable adhesive of layer b) respectively b 3 ⁇ 4 ) by hot air or ultrasonic application.
  • inventive container especially the inventive, preferably single-use cup, can be produced according to the following process, which preferably can be carried out continuously.
  • Figure 1 A shows the first production step
  • Figure 1 B shows the third production step
  • Figure 1C shows the fourth production step
  • Figure 1 E shows the sixths production step
  • Figure 1 F shows an inventive cup.
  • Figure 1 G shows a sectional view of an enlarged scale of the joining region of the produced cup according to figure 1 F.
  • the preferred method of producing an inventive container, in particular a cup 20, by referring to these figures comprises the following steps:
  • the dimension of the side wall part 14 defining a conical or cylindrical shape of the inventive container, in particular the cup 20, with two lateral edges 15, 16,
  • the cup 20 the two lateral edges 15, 16 being brought together in an overlapping manner and joined after having heated the heat sealing layer d) in the joint regions and pressed together,
  • Fig. 1G which is a diagrammatic view, not to scale, of the joining site with edge protection
  • the lateral edge 15 is guided past and behind the lateral edge 16 having the tab 17, and the tab 17 has been folded or turned backwards as edge protection.
  • a new lateral edge, which is here denoted by the reference number 18, is thereby formed.
  • the lateral edge is protected against the penetration of moisture. This is essential because the lateral edge 18 comes into contact with the liquid stored inside the paper cup 20.
  • the edge protection is distinguished by the fact that the tab 17, which consists of the liner paper as the second web, is guided around a lateral edge and thereby depicts a 180-degree change in direction.
  • the bottom of the inventive container in particular of the cup 20, is also formed, preferably punched out of an inventive laminate.
  • the inventive container especially a single used cup, can also be produced according to other known manufacturing processes.
  • inventive laminate can also be used to produce other containers, especially for single use, than cups like trays and optionally corresponding lids, packages for milk or juices, plates or folding cartons for frozen foodstuff. All these kinds of containers are especially suitable for single use.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wrappers (AREA)
  • Laminated Bodies (AREA)
  • Packging For Living Organisms, Food Or Medicinal Products That Are Sensitive To Environmental Conditiond (AREA)

Abstract

La présente invention a pour objet un stratifié multicouche complètement repulpable et recyclable à base essentiellement de matière cellulosique et ayant une structure spéciale et des compositions spéciales des différentes couches, et a pour objet des récipients, de préférence à usage unique, formés d'un tel stratifié multicouche.
PCT/EP2011/000108 2010-01-23 2011-01-13 Stratifié intelligent et récipient intelligent formé à partir de celui-ci Ceased WO2011088966A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP11700727A EP2526025A1 (fr) 2010-01-23 2011-01-13 Stratifié intelligent et récipient intelligent formé à partir de celui-ci
MX2012008547A MX2012008547A (es) 2010-01-23 2011-01-13 Un laminado inteligente y un contenedor inteligente del mismo.
CA2787695A CA2787695A1 (fr) 2010-01-23 2011-01-13 Stratifie intelligent et recipient intelligent forme a partir de celui-ci
CN2011800068579A CN102712380A (zh) 2010-01-23 2011-01-13 灵巧层压件及其灵巧容器
AU2011208905A AU2011208905A1 (en) 2010-01-23 2011-01-13 A smart laminate and a smart container thereof

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102010000178 2010-01-23
DE102010000178.3 2010-01-23
DE102010000177 2010-01-23
DE102010000177.5 2010-01-23

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WO2011088966A1 true WO2011088966A1 (fr) 2011-07-28

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PCT/EP2011/000108 Ceased WO2011088966A1 (fr) 2010-01-23 2011-01-13 Stratifié intelligent et récipient intelligent formé à partir de celui-ci
PCT/EP2011/000273 Ceased WO2011089015A2 (fr) 2010-01-23 2011-01-24 Matériau d'emballage et emballage fabriqué à partir de celui-ci

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EP (1) EP2526025A1 (fr)
CN (1) CN102712380A (fr)
AU (1) AU2011208905A1 (fr)
CA (1) CA2787695A1 (fr)
MX (1) MX2012008547A (fr)
WO (2) WO2011088966A1 (fr)

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WO2013044933A1 (fr) 2011-09-27 2013-04-04 Huhtamäki Oyj Contenant repulpable
EP3397473A4 (fr) * 2015-12-31 2019-06-19 Graphic Packaging International, LLC Matériau d'emballage
US10543665B2 (en) 2014-10-31 2020-01-28 Sig Technology Ag Container precursor, in particular for the manufacture of a food container, from a laminate with a plastic gas and aroma barrier and a peeled edge region, which is partially folded back on itself
US10625488B2 (en) 2014-10-31 2020-04-21 Sig Technology Ag Container precursor, in particular for the manufacture of a food container, from a laminate with a peeled edge region, which is partially folded back on itself
DE102019110593A1 (de) * 2019-04-24 2020-10-29 PAPACKS SALES GmbH Barriereschicht für Cellulosesubstrat
EP3789538A1 (fr) * 2019-09-03 2021-03-10 Constantia Pirk GmbH & Co. KG Papier stratifié pouvant être remis en suspension et son procédé de fabrication
US11001403B2 (en) 2014-10-31 2021-05-11 Sig Technology Ag Device, in particular for closing a head region of a foodstuffs container made of a laminate having an edge region which is skived and partially folded over itself
WO2022073086A1 (fr) * 2020-10-09 2022-04-14 Technosolutions Assessoria Ltda Structure de plusieurs couches pour emballages stratifiés ou revêtus de recyclage facile contenant une matière perméable à l'eau cellulosique ou non
WO2022123257A3 (fr) * 2020-12-10 2022-08-11 Keith Damarell Matériau d'emballage stratifié
EP3497282B1 (fr) 2016-08-08 2024-01-10 WestRock MWV, LLC Carton compostable presentant une résistance à l'huile, à la graisse et à l'humidité
EP4107329A4 (fr) * 2020-02-21 2024-03-06 Stora Enso Oyj Substrat à base de cellulose multicouche résistant à l'eau

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CH708399A1 (de) 2013-07-22 2015-01-30 Cartonspecialist Behälter zur Verpackung von Lebensmitteln.
CN105672031A (zh) * 2016-02-25 2016-06-15 山东省实验动物中心 一种档案袋用防水剂及其制备方法
WO2017222863A1 (fr) * 2016-06-22 2017-12-28 3M Innovative Properties Company Articles multicouches à film barrière ayant un polyester aliphatique thermoplastique, un polymère d'alcanoate de polyvinyle et un plastifiant
US11401661B2 (en) * 2017-11-14 2022-08-02 J & J Green Paper, Inc. Recyclable composition for waterproofing paper utilizing a plant derived wax, pellets of the composition, recyclable waterproof paper laminate including the composition, recyclable hot beverage cup including the laminate, pod for making hot beverages including the laminate, and drinking straw including the laminate
NL2021326B1 (en) 2018-03-29 2019-10-07 Huhtamaki Molded Fiber Tech Bv Biodegradable and compostable food packaging unit from a moulded pulp material with a cellulose-base laminate layer, and method for manufacturing such food packaging unit
EP3560696A1 (fr) 2018-04-27 2019-10-30 Constantia Teich GmbH Feuille d'emballage
DE102020112672A1 (de) 2020-05-11 2021-11-11 Constantia Pirk Gmbh & Co. Kg Papierverpackungsmaterial mit verbesserter Resuspendierbarkeit der Cellulosefasern
CN117999169A (zh) * 2021-09-10 2024-05-07 奥斯龙公司 具有可溶解聚合物层的可回收复合材料、制造方法和与食品容器一起的用途
EP4176724A1 (fr) 2021-11-09 2023-05-10 Universität Hohenheim Utilisation d'un oléogel en tant que couche ou revêtement
US12179463B2 (en) * 2022-04-19 2024-12-31 Sonoco Development, Inc. Recyclable paper with polymeric barrier layer and method of recycling the same
KR102889953B1 (ko) * 2025-02-14 2025-12-02 주식회사 포시 생분해가 가능한 광고판용 친환경 백릿필름 및 이의 제조 방법

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US7348067B1 (en) * 1995-12-28 2008-03-25 The Hoffman Group Composite paperboards and method of making composite paperboards
WO2003089527A1 (fr) * 2002-04-19 2003-10-30 Evco Research, Llc Produits de papier repulpables resistants a l'humidite et procede de fabrication
EP1939099A1 (fr) * 2006-12-28 2008-07-02 Weyerhaeuser Company Procédé de formation d' un rebord et d' un joint de bordure d' un gobelet isolant ainsi que le gobelet obtenu.
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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013044933A1 (fr) 2011-09-27 2013-04-04 Huhtamäki Oyj Contenant repulpable
US10543665B2 (en) 2014-10-31 2020-01-28 Sig Technology Ag Container precursor, in particular for the manufacture of a food container, from a laminate with a plastic gas and aroma barrier and a peeled edge region, which is partially folded back on itself
US10625488B2 (en) 2014-10-31 2020-04-21 Sig Technology Ag Container precursor, in particular for the manufacture of a food container, from a laminate with a peeled edge region, which is partially folded back on itself
US11001403B2 (en) 2014-10-31 2021-05-11 Sig Technology Ag Device, in particular for closing a head region of a foodstuffs container made of a laminate having an edge region which is skived and partially folded over itself
EP3397473A4 (fr) * 2015-12-31 2019-06-19 Graphic Packaging International, LLC Matériau d'emballage
EP3497282B1 (fr) 2016-08-08 2024-01-10 WestRock MWV, LLC Carton compostable presentant une résistance à l'huile, à la graisse et à l'humidité
DE102019110593A1 (de) * 2019-04-24 2020-10-29 PAPACKS SALES GmbH Barriereschicht für Cellulosesubstrat
US12071726B2 (en) 2019-04-24 2024-08-27 PAPACKS SALES GmbH Barrier layer for cellulose substrate
EP3789538A1 (fr) * 2019-09-03 2021-03-10 Constantia Pirk GmbH & Co. KG Papier stratifié pouvant être remis en suspension et son procédé de fabrication
EP4107329A4 (fr) * 2020-02-21 2024-03-06 Stora Enso Oyj Substrat à base de cellulose multicouche résistant à l'eau
WO2022073086A1 (fr) * 2020-10-09 2022-04-14 Technosolutions Assessoria Ltda Structure de plusieurs couches pour emballages stratifiés ou revêtus de recyclage facile contenant une matière perméable à l'eau cellulosique ou non
WO2022123257A3 (fr) * 2020-12-10 2022-08-11 Keith Damarell Matériau d'emballage stratifié

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AU2011208905A1 (en) 2012-07-05
MX2012008547A (es) 2013-02-12
WO2011089015A3 (fr) 2011-10-06
CN102712380A (zh) 2012-10-03
WO2011089015A2 (fr) 2011-07-28
EP2526025A1 (fr) 2012-11-28
CA2787695A1 (fr) 2011-07-28

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