EP1814731A2 - Films transparents aptes a l'emboutissage profond possedant des proprietes antibuee - Google Patents

Films transparents aptes a l'emboutissage profond possedant des proprietes antibuee

Info

Publication number
EP1814731A2
EP1814731A2 EP05804611A EP05804611A EP1814731A2 EP 1814731 A2 EP1814731 A2 EP 1814731A2 EP 05804611 A EP05804611 A EP 05804611A EP 05804611 A EP05804611 A EP 05804611A EP 1814731 A2 EP1814731 A2 EP 1814731A2
Authority
EP
European Patent Office
Prior art keywords
layer
packaging
film
film according
fatty acid
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.)
Withdrawn
Application number
EP05804611A
Other languages
German (de)
English (en)
Inventor
Tobias Fackler
Christoph Schweitzer
Walter Bernig
Bernard Dujardin
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.)
CFS Kempten GmbH
Original Assignee
CFS Kempten GmbH
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 CFS Kempten GmbH filed Critical CFS Kempten GmbH
Publication of EP1814731A2 publication Critical patent/EP1814731A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • 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
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • 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
    • B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
    • 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
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/002—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/16—Lining or labelling
    • 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
    • B29K2077/00—Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as moulding 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
    • B32B2250/00—Layers arrangement
    • B32B2250/24—All layers being polymeric
    • 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
    • B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/412—Transparent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2439/00—Containers; Receptacles
    • B32B2439/40—Closed containers
    • 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
    • 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
    • B32B2439/80—Medical packaging
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y10T428/24843—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] with heat sealable or heat releasable adhesive layer
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y10T428/24851—Intermediate layer is discontinuous or differential
    • Y10T428/24868—Translucent outer layer

Definitions

  • thermoformable films with anti-fog properties are provided.
  • the invention relates to a transparent, thermoformable film which is suitable for packaging goods containing moisture, in particular food.
  • the film according to the invention may be single-layered or multi-layered.
  • MAP packs modified atmosphere packaging
  • a known packaging of this type consists of two packaging elements between which the packaged goods are arranged.
  • the first packaging element is usually to a trough, ie formed into a cup-like recessed embossing, which receives the packaged.
  • Such troughs are usually formed by deep drawing suitable films.
  • the trough is covered by the second packaging element in the operation of a lid, whereby a closed space is formed in which the packaged goods is.
  • Both packaging elements are connected to each other via a peripheral sealing edge (welding edge), wherein the intermediate space is preferably filled with Schutzgas ⁇ atmosphere before the sealing process.
  • the material which forms the first packaging element (trough) must have a certain mechanical strength and dimensional stability in the temperature range customary for the respective application, so that the packaging provides sufficient protection during transport and storage for the packaged goods.
  • the material forming the second packaging element (lid) is usually transparent so that the packaging material underneath is clearly visible.
  • packaging was developed in which not only the lid, but also the bowl is transparent.
  • Comparatively thin films are known in the prior art which are suitable inter alia for packaging food and which are designed such that they suppress the formation of droplets and mist on their surface.
  • these films may be coated with an additive having anti-fog properties or contain an additive having anti-fog properties.
  • reference may be made, for example, to US Pat. No. 5,766,772.
  • the films of the prior art in which the dripping and misting is suppressed, are not deep drawing. If one were to form troughs by means of such films by deep-drawing, these troughs would not be suitable for receiving packaging goods, since the mechanical properties of the films are not sufficient to ensure sufficient rigidity and bending strength of the packaging. Therefore, the known in the art films are possibly suitable as a lid.
  • the packaging material must be easy to process, ie it must be reliably processed with the aid of conventional thermoforming apparatus in a short time, on the other hand it must form a sufficient rigidity already a short time after the deep drawing process, after leaving the thermoforming apparatus, the predetermined shape of the trough not to lose.
  • at least the surface of the packaging material facing the trough interior should be heat-sealable so that the packaging can be hermetically sealed by sealing (welding) the lid with the trough later after the packaging material has been introduced.
  • the used Packaging materials meet the toxicity standards that are placed on food packaging.
  • thermoformable packaging materials suitable for the formation of troughs packaging materials in comparison to the materials suitable for cover often have a much higher layer thickness, the requirements on the optical properties are much higher because the light has to cover a much greater distance through the packaging material of the trough, as is the case with the lid. While the layer thickness of the cover forming materials is often in the range of 5 to 50 microns, thermoformable packaging materials often have layer thicknesses of 200 microns and more because of the required mechanical properties. In order to meet the high demands that are generally placed on food packaging, the deep-drawable packaging material suitable for the formation of troughs must have a high degree of transparency, without the mechanical properties deteriorating.
  • thermoformable packaging material may be impaired.
  • the invention is therefore based on the object to provide an improvedmaschines ⁇ material available, which allows the control of the packaged goods.
  • the packaging material should be transparent, deep-drawable and thus be suitable for forming troughs of packaging for food, wherein mechanical strength and optical transparency should meet high standards.
  • the formation of mist and droplets should be suppressed to the extent that the view of the packaged goods is not impaired by the material forming the cavity. This suppression of fog and dripping should also be maintained if the thermoformable packaging material is thermally treated as a result of its processing or for other reasons such as sterilization of the packaging.
  • certain transparent, deep-drawable films are suitable for the formation of depressions of MAP packages, with an additive having antifogging properties preventing the formation of mist and droplets, so that the packaged goods pass through the transparent depression without being impaired ⁇ dende film can be considered and controlled.
  • the deep-drawable films according to the invention have good mechanical and optical properties, are toxicologically suitable for packaging foodstuffs and efficiently prevent the condensation of moisture on their surface.
  • the invention relates to transparent, thermoformable films, packaging thereof and the use of the films for packaging of packaging goods, especially food.
  • One aspect of the invention relates to a transparent, thermoformable film comprising a thermoplastic polymer, wherein the film is equipped with antifogging properties.
  • the equipment of the film with anti-fog properties is preferably carried out with the aid of an additive with anti-fog properties, which is either contained in the film or with which at least one surface of the film is coated.
  • transparent in the sense of the invention means that a packaged product can be viewed through the thermoformable film with the naked eye.
  • the transparency is preferably quantified with the aid of densitometers. Such methods are familiar to the person skilled in the art.
  • the turbidity can be measured as an optical value as a measure of the transparency.
  • the turbidity is preferably measured according to the ASTM test standard D 1003-61 m, Procedure A, after calibration of the measuring instrument with turbidity standards between 0.3 and 34% haze.
  • a Byk-Gardner Hazemeter with Ulbricht sphere which allows integrated measurement of the diffuse light transmittances at a solid angle of 8 ° to 160 °, is suitable as a measuring instrument.
  • the films of the present invention preferably have a haze determined by the process described above of less than 30%, more preferably less than 25%, even more preferably less than 20%, most preferably less than 15%, and most preferably less than 12%.
  • deep-drawable in the sense of the invention defines a material which can be “deep-drawn” under heat on a suitable device, i. under the action of pressure (and / or vacuum), for example, can be formed into a trough. It is a material which has thermoplastic properties, so that it is deformable in the heated state, but at room temperature has a sufficient dimensional stability, so that even after introduction of the packaged material essentially the form prescribed by thermoforming (eg trough) is maintained ,
  • the film according to the invention is preferably multilayered.
  • the film of the invention is not heat shrinkable, i. under the action of heat, the sheet-like expansion of the film is essentially retained and, in particular, there is no significant shrinkage occurring within the film plane.
  • the film according to the invention comprises a carrier layer (T) containing a thermoplastic polymer and an outer sealing layer (S), which preferably contains an additive with antifogging properties or is coated on its free surface with an additive having antifogging properties.
  • T carrier layer
  • S outer sealing layer
  • the sealing layer (S) is preferably equipped with antifogging properties, but preferably not the carrier layer (T) or an optionally present between the carrier layer (T) and the sealing layer (S) Layer.
  • the film of the invention is preferably asymmetrical, i. it has no mirror plane within one of its layers or at its interface.
  • the film according to the invention preferably has one or more layers, preferably between the carrier layer (T) and the sealing layer (S), which are independently selected from the group consisting of a bonding layer (V), an intermediate layer (Z), a primer layer (HV-1), a polyamide layer (PA-1), a barrier layer (B), a polyamide layer (PA-2) and a Haftvermittler ⁇ layer (HV-2).
  • the film according to the invention has at least 1 of the abovementioned layers, preferably between the carrier layer (T) and the polyamide layer (PA-1) or the sealing layer (S), more preferably at least 2, more preferably at least 3, most preferably at least 4 and in particular at least 5 of the aforementioned layers.
  • the film according to the invention between the carrier layer (T) and the sealing layer (S) 1 to 7 layers, more preferably 2 to 7, more preferably 3 to 7, most preferably 4 to 7 and especially 5 to 7 layers independently selected from the group consisting of an intermediate layer (Z), a bonding layer (V), a primer layer (HV-1), a polyamide layer (PA-1), a barrier layer (B), a polyamide layer (PA-2) and a primer layer (HV-2 ).
  • the sequence of the individual layers within the film preferably corresponds to the order of their designation in the above list, ie (T) // (Z) // (V) // (HV-1) // (PA-1) // ( B) // (PA-2) // (HV-2) // (S), or (T) // (V) // (Z) // (HV-1) // (PA-1) // (B) // (PA-2) // (HV-2) // (S), where "//" marks the boundary of two adjacent layers.
  • a bonding layer V
  • the Sequence of the layers in the film preferably (T) // (V) // (PA-1) // (B) // (PA-2) // (S). It is not absolutely necessary for two layers separated by "//" to follow one another directly, ie to touch one another - it is also possible for further layers to be inserted.
  • the polyamide layers (PA-1) and (PA-2) and also the adhesion promoter layers (HV-1) and (HV-2) are each independent of each other, ie the film according to the invention may contain, for example, a primer layer (HV-2) without simultaneously to contain a primer layer (HV-1).
  • the film according to the invention preferably comprises at least the carrier layer (T), a sealing layer (S) and a barrier layer (B), the barrier layer (B) preferably being arranged between the carrier layer (T) and the sealing layer (S) and the sealing layer (S ) is equipped with antifogging properties.
  • the film according to the invention has a total layer thickness of at least 100 ⁇ m, more preferably at least 125 ⁇ m, more preferably at least 150 ⁇ m, most preferably at least 175 ⁇ m and in particular at least 200 ⁇ m.
  • the total layer thickness is preferably in the range from 100 to 3,000 ⁇ m, more preferably 125 to 2,500 ⁇ m, even more preferably 150 to 1,500 ⁇ m, most preferably 175 to 1,200 ⁇ m and in particular 200 to 1,100 ⁇ m.
  • the total layer thickness of the multilayer film according to the invention is at least 210 ⁇ m, 220 ⁇ m, 230 ⁇ m, 240 ⁇ m, 250 ⁇ m, 275 ⁇ m, 300 ⁇ m, 325 ⁇ m, 350 ⁇ m, 375 ⁇ m, 400 ⁇ m, 425 ⁇ m, 450 mm. 475 ⁇ m, 500 ⁇ m, 525 ⁇ m, 550 ⁇ m, 575 ⁇ m or at least 600 ⁇ m.
  • the film according to the invention preferably has a sealing layer (S) which is equipped with antifogging properties.
  • the sealing layer preferably contains either an additive with antifogging properties or on its free surface the sealing layer (S) is coated with an additive having antifogging properties. If the sealing layer (S) is coated with the additive on its free surface, this coating as such is not to be regarded as an independent layer of the film according to the invention.
  • the sealing layer (S) is preferably multi-layered.
  • the additives with antifogging properties are preferably approved for the production of layers that come into contact with foodstuffs.
  • the term "sealing layer (S)" or “(S)” is always to be understood as meaning a layer which contains an additive with antifogging properties or is coated on its free surface with an antifogging additive.
  • the additive having antifogging properties comprises an amphiphilic compound.
  • Amphiphilic compounds are characterized by being both have lipophilic as well as hydrophilic properties.
  • the amphiphilic compound is preferably a surfactant, in particular a nonionic, anionic, cationic or amphoteric surfactant.
  • Such compounds are known to the person skilled in the art. In this context, for example, on HP. Fiedler, Encyclopedia of excipients for pharmacy, cosmetics and related fields, Editio Cantor Aulendorff, 2002 be referenced.
  • amphiphilic compound is N-(2-aminoethyl)-2-aminoethyl-N-(2-aminoethyl)-2-aminoethyl-N-(2-aminoethyl)-2-aminoethyl-N-(2-aminoethyl)-2-aminoethyl-N-(2-aminoethyl)-2-aminoethyl-N-(2-aminoethyl)-2-aminoethyl-N-(2-aminoethyl)-2-aminoethyl-N-(2-aminoethyl)-2-aminoethyl-N-(2-aminoethyl)-2-aminoethyl-N-(2-aminoethyl)-2-aminoethyl-N-(2-aminoethyl)-2-aminoethyl-N
  • a nonionic surfactant selected from the group consisting of fatty alcohols, sterols, polyoxyethylene fatty acid esters, polyoxypropylene fatty acid esters, alkyl polyglycosides, alkylphenol ethoxylates and propoxylates, sorbitan fatty acid esters, polyoxyethylene and polyoxypropylene sorbitan fatty acid esters, polyoxyethylene and polyoxypropylene fatty acid glycerides, polyoxyethylene and polyoxypropylene Fatty alcohol ethers, glycerol fatty acid mono-, di- and tri-esters and poloxamers;
  • an anionic surfactant selected from the group consisting of fatty acid salts, salts of alkyl or alkylaryl sulfonic acids and salts of alkyl or alkylaryl sulfates; or
  • “Fatty acids” in the sense of the description are linear or branched monocarboxylic acids having 4 to 32 carbon atoms, preferably 12 to 24 carbon atoms, in particular 14, 16 or 18 carbon atoms, which have 1, 2, 3, 4 or 5 olefinic, conjugated or non-conjugated double bonds which may independently have cis or trans configuration. Further, the carbon atoms may be substituted with 1, 2 or 3 hydroxy groups.
  • the fatty acids are selected from the group consisting of
  • saturated carboxylic acids e.g. Butyric, caproic, caprylic, capnic, lauric, myristic, palmitic, stearic, arachidic, behenic and lignoceric acids;
  • monounsaturated carboxylic acids e.g. Palmitoleic acid, oleic acid, elaidic acid, cis-vaccenic acid, erucic acid and nervonic acid;
  • - polyunsaturated carboxylic acids such as linoleic acid, ⁇ -linolenic acid, ⁇ -linolenic acid, di-homo- ⁇ -linolenic acid and arachidonic acid; unsaturated hydroxycarboxylic acids, such as ricinoleic acid; and - saturated hydroxycarboxylic acids, such as hydroxystearic acid, in particular 12-hydroxy-stearic acid.
  • “Fatty alcohols” in the sense of the description are derived from the above-defined fatty acids in that the carboxylic acid group has been reduced to a hydroxymethyl group.
  • Fatty alcohols and sterols preferred according to the invention are cetyl alcohol, stearyl alcohol, cetylstearyl alcohol and cholesterol.
  • Sorbitan fatty acid esters preferred according to the present invention are sorbitan fatty acid monoesters such as e.g. Sorbitan monooleate, sorbitan monopalmitate, sorbitan monostearate and sorbitan monolaurate; but also sorbitan fatty acid diesters and sorbitan fatty acid triesters such as e.g. Sorbitan trioleate and sorbitan tristearate.
  • Polyoxyethylene sorbitan fatty acid esters preferred according to the invention are polysorbate 20, polysorbate 40, polysorbate 60 and polysorbate 80.
  • Polyoxyethylene fatty acid glycerides which are preferred according to the invention are macrogol 1000 glycerol monofatty acid esters, e.g. Macrogol 1000 glycerol monolaurate, macrogol 1000 glycerol monostearate and macrogol 1000 glycerol monooleate; but also representatives such as Macrogol-1500-glycerol terricinoleate (Polyoxyl 35 Castor OiI) and Macrogol glycerol hydroxystearate (Polyoxyl 40 Hydrogenated Castor OiI).
  • macrogol 1000 glycerol monofatty acid esters e.g. Macrogol 1000 glycerol monolaurate, macrogol 1000 glycerol monostearate and macrogol 1000 glycerol monooleate
  • Macrogol-1500-glycerol terricinoleate Polyoxyl 35 Castor OiI
  • Macrogol glycerol hydroxystearate Polyoxyl 40 Hydrogenated Castor OiI
  • Polyoxyethylene fatty acid esters preferred according to the invention are macrogol stearate 400, polyoxyl 40 stearate and polyoxyl 50 stearate.
  • Polyoxyethylene fatty alcohol ethers preferred according to the invention are macrogollauryl ethers, polyoxyethylene (23) lauryl ethers, polyoxyl cetostearyl ethers and polyoxyl 10 oleyl ethers.
  • Glycerol fatty acid esters preferred according to the invention are glycerol monostearate and glycerol monooleate.
  • Poloxamers preferred according to the invention are poloxamer 188 and poloxamer 407.
  • Fatty acid salts which are preferred according to the invention are the ammonium and alkali metal salts of fatty acids, in particular the ammonium, sodium or potassium salts of lauric acid, myristic acid, stearic acid or oleic acid.
  • Preferred salts of alkylsulfonic acids or alkyl sulfates according to the invention have linear or branched alkyl chains having 8 to 32 carbon atoms, preferably 12 to 24 carbon atoms, in particular 14, 16 or 18 carbon atoms, and are ammonium or alkali metal salts.
  • Salts of alkylarylsulfonic acids which are preferred according to the invention are derived from benzenesulfonic acid and carry, preferably in the para position, a linear or branched alkyl chain having 8 to 32 carbon atoms, preferably 12 to 24 carbon atoms, in particular 14, 16 or 18 carbon atoms. Preferably, it is the ammonium or alkali metal salts.
  • Preferred salts of alkylaryl sulfates according to the invention are derived from phenyl sulfate and carry, preferably in the para position, a linear or branched alkyl chain having 8 to 32 carbon atoms, preferably 12 to 24 carbon atoms, in particular 14, 16 or 18 carbon atoms. It is preferably the ammonium or alkali metal salts.
  • Preferred quaternary ammonium compounds according to the invention are benzalkonium chloride, cetylpyridinium chloride, cetylthomethylammonium compounds and dequalinium chloride.
  • the antifogging additive may contain one or more of the above amphiphilic compounds. Such additives are commercially available.
  • a particularly preferred additive which is preferably contained in the sealant layer (S) is Schulman Polybatch AF 1088.
  • a particularly preferred additive suitable for coating the free surface of the sealant layer (S) is Siegwerk Antifog Solution DFC 15-029331 -4.
  • the additive having anti-fogging properties is contained in the sealant layer (S)
  • its weight ratio is preferably 0.005 to 25% by weight, more preferably 0.01 to 20% by weight, still more preferably 0.05 to 15% by weight. , Most preferably 0.1 to 10% by weight and in particular 0.5 to 5.0 wt .-% based on the total weight of the sealing layer (S).
  • the coated amount is preferably 0.005 to 5.0 g / m 2 , more preferably 0.01 to 2.0 g / m 2 , still more preferably 0 , 05 to 1, 5 g / m 2 , most preferably 0.1 to 1, 0 g / m 2 and in particular 0.12 to 0.6 g / m 2 based on the outer surface of the sealing layer (S).
  • the additive with anti-fog properties can be provided as a lacquer and be sprayed onto the free surface of the sealing layer (S).
  • a lacquer is based on acrylic polymers and contains the additive in an amount of 1 to 20 wt .-%, more preferably 2 to 10 wt .-%.
  • the optionally present sealing layer (S) of the film according to the invention is preferably based on at least one polymer selected from the group comprising polyolefins and olefin copolymers.
  • the polymers used for the production of the sealing layer (S) are approved for the production of layers, which come into contact with food.
  • the sealing layer (S) is based on at least one polyolefin selected from the group consisting of m-polyethylene (m-PE), high density polyethylene (HDPE), low density polyethylene (LDPE), linear low density polyethylene (LLDPE), acrylic acid copolymer, in particular ionomer (preferably Surlyn ®, for example with zinc ions), polypropylene (PP) and propylene copolymer.
  • m-PE m-polyethylene
  • HDPE high density polyethylene
  • LDPE low density polyethylene
  • LLDPE linear low density polyethylene
  • acrylic acid copolymer in particular ionomer (preferably Surlyn ®, for example
  • the sealing layer (S) is particularly preferably based on m-PE, LDPE or a mixture thereof.
  • the sealing temperatures are preferably in the range of 100 ° C to 140 ° C.
  • the melting temperature of the sealing layer (S) is preferably 90 to 140 ° C, more preferably 95 ° C to 130 ° C.
  • the sealing layer (S) can be equipped with the usual excipients such as antistatic agents, lubricants, processing aid, antiblocking agents and / or spacers.
  • the optional sealing layer (S) preferably has a thickness of 1.0 to 100 ⁇ m, more preferably 2.5 to 50 ⁇ m, even more preferably 5.0 to 25 ⁇ m, most preferably 10 to 20 ⁇ m and in particular 12.5 to 17.5 ⁇ m.
  • the possibly present carrier layer (T), the optionally present connection layer (V) and the optionally present intermediate layer (Z) are preferably based independently on a thermoplastic polymer, more preferably on a polymer selected from the group consisting of polyamides, copolyamides, polyolefins , Olefin copolymers, polystyrene (PS), polyethylene terephthalate (APET or CPET) or polyvinyl chloride.
  • the possibly present carrier layer (T) of the film according to the invention is based on a thermoplastic polymer.
  • a thermoplastic polymer which has a melting temperature ⁇ 170 ° C, preferably ⁇ 160 ° C, most preferably from 1 10 ° C to 170 ° C.
  • the carrier layer (T) is preferably based on at least one thermoplastic polymer which is at least one polymer selected from the group consisting of polyamides, copolyamides, polyolefins, olefin copolymers, polystyrene (PS), polyethylene terephthalate (APET or CPET) or polyvinyl chloride.
  • the carrier layer (T) is based on an aliphatic polyamide or copolyamide, a polyethylene, very particularly preferably polyethylene with a density ⁇ 0.92 g / cm 3 , a polypropylene (PP), an ethylene copolymer, very particularly preferably an ethylene Vinyl acetate copolymer and / or a propylene copolymer.
  • Polyamide 6 and its copolyamides are particularly suitable as aliphatic polyamides. Most preferably, it is based on polypropylene or a propylene copolymer.
  • the optionally present carrier layer (T) preferably has a thickness of 100 to 800 ⁇ m, more preferably 150 to 700 ⁇ m, even more preferably 175 to 600 ⁇ m, most preferably 200 to 300 ⁇ m and in particular from 225 to 275 ⁇ m.
  • the optionally present bonding layer (V) and the optional intermediate layer (Z) of the film according to the invention are preferably based independently on a polymer selected from the group consisting of polyamides, copolyamides, polyolefins, Olefin-Copolymehsaten, polystyrene (PS), polyethylene terephthalate (APET or CPET) or polyvinyl chloride.
  • a polymer selected from the group consisting of polyamides, copolyamides, polyolefins, Olefin-Copolymehsaten, polystyrene (PS), polyethylene terephthalate (APET or CPET) or polyvinyl chloride.
  • PS polystyrene
  • APET polyethylene terephthalate
  • CPET polyvinyl chloride
  • the optional bonding layer (V) preferably has a thickness of 50 to 750 ⁇ m, more preferably 100 to 500 ⁇ m, even more preferably 125 to 475 ⁇ m, most preferably 150 to 450 ⁇ m, and most preferably from 175 to 425 ⁇ m.
  • the optional intermediate layer (Z) preferably has a thickness of 0.1 to 100 ⁇ m, more preferably 0.5 to 50 ⁇ m, even more preferably 1 to 0 to 25 ⁇ m, most preferably 2.5 to 20 ⁇ m and most preferably 5 , 0 to 15 ⁇ m.
  • the film according to the invention comprises a carrier layer (T), an intermediate layer (Z) and a tie layer (V) which are identical or different on a thermoplastic polyolefin, a thermoplastic olefin copolymer or mixture thereof, particularly preferably polypropylene or a Propylene copolymer based.
  • a carrier layer (T), an intermediate layer (Z) and a tie layer (V) which are identical or different on a thermoplastic polyolefin, a thermoplastic olefin copolymer or mixture thereof, particularly preferably polypropylene or a Propylene copolymer based.
  • the polymers on which the carrier layer (T), the intermediate layer (Z) and the connecting layer (V) are based can be characterized by their melt flow rate MFR, which according to the invention is preferably measured according to DIN ISO 133 at 190 ° C. and 2.16 kg becomes.
  • the polymers on which the carrier layer (T), the intermediate layer (Z) and the connecting layer (V) are based are preferably polymers having a comparatively high MFR, ie low viscosity.
  • the carrier layer (T) is preferably based on a polymer which has a lower melt flow rate than the polymer on which the intermediate layer (Z) is based.
  • the support layer (T) is preferably based on a polymer which has a lower melt flow rate than the polymer on which the bonding layer (V) is based. Particularly preferred behave the melt flow rates of the polymers on which layers (T), (Z) and (V) are based, according to the following sequence:
  • MFR melt flow rates being determined according to DIN ISO 1 133 at 190 ° C and 2.16 kg.
  • the ratio of the melt flow rate of the polymer on which the carrier layer (T) is based (MFR (T)) to the melt flow rate of the polymer on which the intermediate layer (Z) is based (MFR (Z)) is within the range from 1: 1, 1 to 1:20, more preferably 1: 1, 2 to 1:10, even more preferably 1: 1, 3 to 1: 5, most preferably 1: 1, 4 to 1: 4 and especially 1: 1 , 5 to 1: 3, wherein the melt flow rates MFR are each determined according to DIN ISO 1 133 at 190 ° C and 2.16 kg.
  • the ratio of the melt flow rate of the polymer on which the backing layer (T) is based (MFR (T)) to the melt flow rate of the polymer on which the tie layer (V) is based (MFR (V)) is in the range from 1: 1, 1 to 1:20, more preferably 1: 1, 2 to 1:10, even more preferably 1: 1, 3 to 1: 5, most preferably 1: 1, 4 to 1: 4 and especially 1: 1 , 5 to 1: 3, wherein the melt flow rates MFR are each determined according to DIN ISO 1 133 at 190 ° C and 2.16 kg.
  • the optical properties of the multilayer films according to the invention are improved in comparison with multilayer films which have a carrier layer (T) but no intermediate layer (Z) and no bonding layer (V).
  • the multilayer films according to the invention are transparent, the transparency is not or only negligibly adversely affected by the thermoforming (based on a constant material thickness, that is, taking into account the dilution of the packaging material in the course of deformation).
  • the optionally present barrier layer (B) of the film according to the invention is preferably gas- and / or aroma-tight and is preferably based on at least one Polymer selected from the group comprising ethylene-vinyl alcohol copolymer, vinylidene chloride copolymer, polyester and polyamide, preferably ethylene vinyl alcohol copolymer (EVOH).
  • the optional barrier layer (B) should be substantially impermeable to both oxygen and water vapor. This property should preferably be maintained even when the film is used at elevated temperatures.
  • the ethylene-vinyl alcohol copolymer has been obtained by partial saponification of an ethylene-vinyl acetate copolymer, the saponification degree is preferably between 25 and 50 mol%, more preferably between 35 and 45 mol%.
  • the gas-tightness of the film according to the invention determined according to DIN 53380, is preferably less than 5.0, more preferably less than 4.0 and in particular less than 2.0 [cm 3 / m 2 dbar O 2 ].
  • the optional barrier layer (B) preferably has a thickness of 0.5 to 50 ⁇ m, more preferably 1 to 0 to 40 ⁇ m, more preferably 1 to 5 to 30 ⁇ m, most preferably 2.0 to 10 ⁇ m, and most preferably 2 , 5 to 7.5 ⁇ m.
  • the optionally present adhesion promoter layers (HV-1) and (HV-2) of the film according to the invention are preferably based independently of one another on a mixture of polyolefins and / or olefin copolymers, preferably selected from the group consisting of LDPE, HDPE, PP, maleic anhydride Copolymer (MAH copolymer) and / or ethylene-vinyl acetate copolymer.
  • anhydride-modified polyethylene acid copolymers of ethylene, acid-modified ethylene-vinyl acetate, acid-modified ethylene (meth) acrylate, anhydride-modified ethylene (meth) acrylate, anhydride-modified ethylene-vinyl acetate, acid / acrylate-modified ethylene-vinyl acetate and a polymer blend containing at least one of the aforementioned polymers.
  • MAH copolymers are particularly preferred.
  • the optional primer layers (HV-1) and (HV-2) independently preferably have a thickness of 0.1 to 25 ⁇ m, more preferably 0.2 to 15 ⁇ m, even more preferably 0.5 to 10 ⁇ m, most preferably 1, 0 to 7.5 microns and in particular from 2.0 to 5.0 microns.
  • the optionally present polyamide layers (PA-1) and (PA-2) of the film of the invention are preferably based independently of one another on a polyamide or copolyamide, which may be aliphatic or (partially) aromatic.
  • the polyamide is aliphatic.
  • the polyamide layer (PA-1) and / or the polyamide layer (PA-2) are based independently of one another on a polyamide or copolyamide selected from the group consisting of PA 4, PA 6, PA 7, PA 8, PA 9, PA 10, PA 11, PA 12, PA 4,2, PA 6,6, PA 6,8, PA 6,9, PA 6,10, PA 6,12, PA 7,7, PA 8 , 8, PA 9.9, PA 10.9, PA 12.12, PA 6 / 6.6, PA 6.6 / 6, PA 6.2 / 6.2, and PA 6.6 / 6.9 /. 6
  • the composition of the polyamide layer (PA-1) and the polyamide layer (PA-2) is identical. PA 6 is particularly preferred.
  • the optionally present polyamide layer (PA-1) and the optionally present polyamide layer (PA-2) preferably have independently of one another a thickness of 0.1 to 25 ⁇ m, more preferably 0.2 to 15 ⁇ m, even more preferably 0, 5 to 10 ⁇ m, more preferably 1, 0 to 7.5 ⁇ m and in particular from 2.0 to 5.0 ⁇ m.
  • the ratio of the sum of the layer thicknesses of the carrier layer (T), the possibly present connection layer (V) and the possibly present Eisen ⁇ layer (Z) to the sum of the layer thicknesses of the possibly present Haftvermittler ⁇ layer (HV), the optionally existing polyamide layer (PA-1), the optionally present barrier layer (B), the optionally present polyamide layer (PA-2) and the sealing layer (S) in the range from 2: 1 to 500: 1, more preferably 5 : 1 to 250: 1, more preferably 10: 1 to 50: 1, most preferably 10: 1 to 25: 1, and most preferably 10: 1 to 22.5: 1.
  • the film according to the invention may comprise further layers based on at least one polymer selected from the group comprising polyolefins, olefin copolymers, polyesters, polyamides, polystyrene (PS), polyethylene terephthalate (APET or CPET) or polyvinyl chloride.
  • the film of the invention can be printed, wherein at least one layer of the film can be printed or dyed by the addition of additives such as organic or inorganic dyes and pigments, whereby the transparency should not or only slightly be affected.
  • the film of the invention is thermoformable.
  • secant modulus, 5% tensile stress and yield stress yield strength
  • yield strength yield strength
  • the secant modulus is the slope of the force-elongation curve between 0.05 and 0.25% elongation relative to the gripper cross-section, the 5% strain the stress at 5% strain and the yield stress the tensile stress at which the slope of the force Length change curve becomes zero for the first time.
  • 15 mm wide samples are tested at 23 ° C, 50% relative humidity and a test speed of 100 mm / min.
  • the secant modulus determined by the above method is at least 650 N / mm 2 , more preferably at least 700 N / mm 2 , even more preferably at least 720 N / mm 2 , most preferably at least 750 N / mm 2 and especially at least 780 N / mm 2 ,
  • the secant modulus is at least 800 N / mm 2 , more preferably at least 900 N / mm 2 , even more preferably at least 1000 N / mm 2 , on It is most preferably in the range of 800 to 1500 N / mm 2 , in particular from 1000 to 1200 N / mm 2 .
  • the secant modulus is particularly preferably the above-mentioned values at a temperature of 100 ° C.
  • the secant modulus correlates with the stability of a packaging tray.
  • a packaging tray can be deep-drawn from the film according to the invention, which still has sufficient mechanical stability in the heated state, ie at 100 ° C., that it has a significant stability even in the still heated state (expressed via the secant modulus). having.
  • the 5% elongation stress determined by the above method is at least 10 N / mm 2 , more preferably at least 13 N / mm 2 , even more preferably at least 16 N / mm 2 , most preferably at least 19 N / mm 2 and especially at least 21 N / mm 2 .
  • the 5% elongation stress is at least 22 N / mm 2 , more preferably at least 25 N / mm 2 , even more preferably at least 30 N / mm 2 , most preferably in the range from 25 to 50 N / mm 2 , in particular from 30 to 40 N / mm 2 .
  • the yield strength determined by the abovementioned method is preferably at least 15 N / mm 2 , more preferably at least 20 N / mm 2 , even more preferably at least 22 N / mm 2 , most preferably at least 24 N / mm 2 and especially at least 26 N / mm 2 .
  • the yield strength is at least 30 N / mm 2 , more preferably at least 35 N / mm 2 , even more preferably at least 40 N / mm 2 , most preferably in the range from 35 to 60 N / mm 2 , in particular from 40 to 50 N / mm 2 .
  • the films of the present invention have a tensile modulus in the range of 1,000 to 2,500 MPa, more preferably 1,050 to 2,200 MPa, even more preferably 1,100 to 1,900 MPa, most preferably 1,150 to 1,700 MPa, and most preferably 1,200 to 1,500 MPa.
  • the tensile modulus is preferably determined according to ASTM test standard D638 (ISO 527).
  • the film according to the invention preferably both in the longitudinal and in the transverse direction, has one or more of the following parameters measured by tensile test according to DIN EN ISO 527-3, preferably at least one secant modulus E s within one of the following range of values (average value over three measurements, force transducer F max : 2.5 kN, displacement transducer: traverse, clamping length: 100 mm, a 0 : in the range of 0.018-0.068 mm, b 0 : 15 mm, S 0 : in the range of 0.27-1, 02 mm 2 , pre-load: 0.1 MPa, test speed 500 mm / min, start of E modulus determination: 0.25%, end of E modulus determination: 1.5%):
  • At least one of the parameter pairs ⁇ ⁇ / ⁇ ⁇ , ⁇ M / ⁇ M or ⁇ B / ⁇ B lies within the specified value ranges. Particularly preferably, all parameters are within the specified value ranges.
  • the film according to the invention is preferably suitable for deep drawing a drawdown ratio of 1: 2, more preferably 1: 2.5, even more preferably 1: 3, even more preferably 1: 3.5, most preferably 1: 4 and in particular 1: 4.5 to become. It is known to the person skilled in the art that the individual layer thickness of the multilayer film can be adapted to the intended deep-drawing ratio, so that even in the deep-drawn areas a sufficient material thickness is subsequently available.
  • the film according to the invention may additionally contain customary additives or auxiliary substances independently in one or more layers.
  • at least one layer of lubricant and / or anti-friction agent may be used.
  • Anti-blocking agents should preferably be present in the carrier layer (T) and / or the sealing layer (S), but preferably not in one of the intermediate layers.
  • Lubricants may also preferably be present in at least one of the intermediate layers which may be present.
  • the film may contain in one or more layers conventional stabilizers, antioxidants, plasticizers, processing aids, UV absorbers, fillers, anti-flame agents, antistatic agents, etc. Such substances are known to the person skilled in the art.
  • the film according to the invention can be produced by a blown, flat film, coating, extrusion, coextrusion or a corresponding coating or laminating method. Combinations of these methods are possible.
  • the film of the present invention can be made by the film blowing coextrusion method as described e.g. in US 3,456,044.
  • the film according to the invention contains more than 4 layers, it is preferable to first separate separate elements from e.g. 2 or 3 layers by (co-) extrusion to produce and then connect them together.
  • first the layer sequence (B) // (S) and the layer sequence (T) // (Z) // (V) or (T) // (V) // (Z) can be prepared independently of each other separately and then on each other be laminated.
  • Such methods are known to the person skilled in the art.
  • the film is preferably produced by a consecutive process in which first a multilayer film is produced which comprises only a part of the layers of the film according to the invention.
  • This multilayer film preferably comprises an intermediate layer (Z), a barrier layer (B) and a sealing layer (S), but neither a carrier layer (T) nor a connecting layer (V).
  • the multilayer film thus produced is then according to the invention preferably by means of extrusion lamination with the carrier layer (T) by extrusion of the connecting layer (V).
  • one or all layers of the inventive film are crosslinked before or after orientation to increase their repellency and / or puncture resistance.
  • the crosslinking is preferably carried out by the use of .beta.-radiation.
  • the radiation source is an electron beam generator operating in a range of 150 kV to 300 kV.
  • a dose of 60 kGy is preferably used to crosslink the entire film or just individual layers, such as the outer layer.
  • the polymers used for layer construction of the film are commercially available and sufficiently described in the prior art. They are usually mixed to produce the films of the invention as pellets or granules, as necessary in conventional mixing equipment, and brought by melting, preferably by means of extruders in the desired final form. As already mentioned, production by the blown film coextrusion method is preferred, extruders having coextrusion dies being used. The processing temperatures, especially those in the extrusion, are known in the art.
  • chill roll systems which have as a special feature large cooling rolls which receive the melt film emerging from the mold.
  • the film according to the invention is outstandingly suitable for packaging goods, preferably foods, particularly preferably perishable foods, which have a water content of at least 1% by weight, more preferably at least 2% by weight, even more preferably at least 5% by weight most preferably at least 7.5% and more preferably at least 10% by weight.
  • the film can be used both for hot fillings as well as for the heating of contents in the film to sterilization.
  • the film is suitable for packaging foods such as meat, fish, vegetables, fruits, dairy products, Smoked goods, prepared meals, cereals, cereals, bread and baked goods, but also of other goods, such as medical products.
  • a further aspect of the invention therefore relates to packaging made from the film according to the invention, preferably for foodstuffs, particularly preferably perishable foodstuffs.
  • the packages according to the invention comprise two packaging elements, wherein the first packaging element comprises a transparent film as defined above which is deep-drawn, and the second packaging element comprises a multilayer film having a total layer thickness of less than 250 ⁇ m, more preferably less than 200 ⁇ m, more preferably less than 100 ⁇ m, most preferably less than 75 ⁇ m and in particular less than 50 ⁇ m.
  • the multilayer film comprised by the second packaging element is preferably not deep drawable.
  • the second packaging element comprises a transparent multilayer film, which is also equipped with antifogging properties.
  • it may contain an additive with anti-fog properties described above or be coated with such an additive on the surface which faces the packaged product.
  • the additive having anti-fog properties is one of the above-described compositions, which may be identical or different compared to the additive having anti-fog properties contained in the thermoformed sheet of the present invention.
  • the first packaging element has a trough, which has been formed by deep drawing, whereby a cavity is formed between the first and the second packaging element, wherein the first and the second packaging element are sealed at the edges.
  • the ratio of the total layer thickness of the first packaging element to the total layer thickness of the second packaging element is in the range of 200: 1 to 1: 1, more preferably 100: 1 to 2: 1, even more preferably 50: 1 to 3: 1, most preferably 25: 1 to 4: 1 and especially 20: 1 to 5: 1.
  • Another aspect of the invention relates to the use of a film as described above or a package as described above for packaging a moisture-releasing packaged product.
  • the moisture-containing packaged product is preferably a foodstuff.
  • the following multilayer film was produced by coextrusion:

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wrappers (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention concerne un film transparent apte à l'emboutissage profond comprenant un polymère thermoplastique, ce film étant pourvu de propriétés antibuée. Le film selon l'invention peut être utilisé pour emballer des produits dégageant de l'humidité, en particulier des aliments.
EP05804611A 2004-11-16 2005-11-16 Films transparents aptes a l'emboutissage profond possedant des proprietes antibuee Withdrawn EP1814731A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004055323A DE102004055323A1 (de) 2004-11-16 2004-11-16 Transparente tiefziehfähige Folien mit Antifog-Eigenschaften
PCT/EP2005/056024 WO2006053885A2 (fr) 2004-11-16 2005-11-16 Films transparents aptes a l'emboutissage profond possedant des proprietes antibuee

Publications (1)

Publication Number Publication Date
EP1814731A2 true EP1814731A2 (fr) 2007-08-08

Family

ID=35517384

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05804611A Withdrawn EP1814731A2 (fr) 2004-11-16 2005-11-16 Films transparents aptes a l'emboutissage profond possedant des proprietes antibuee

Country Status (5)

Country Link
US (1) US20080113133A1 (fr)
EP (1) EP1814731A2 (fr)
DE (1) DE102004055323A1 (fr)
RU (1) RU2007122211A (fr)
WO (1) WO2006053885A2 (fr)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070224437A1 (en) * 2006-03-27 2007-09-27 Toshiya Kamei Laminated packaging film and method of producing same
DE102006042831A1 (de) * 2006-09-08 2008-03-27 Hydro Aluminium Deutschland Gmbh Verbundfolie
EP2077297B1 (fr) 2008-01-02 2012-04-04 Flexopack S A Formulation de PVDC et film thermorétrecissable
AU2008264215A1 (en) * 2008-01-03 2009-07-23 Flexopack S.A. Thermoforming film
DE102010005277A1 (de) * 2010-01-21 2011-07-28 Obermühle Polymertechnik GmbH, 07381 Mehrschichtfolie
DE202010007972U1 (de) * 2010-07-02 2010-12-09 Kobusch-Sengewald Gmbh Klare transparente Antifog-Mehrschicht-Folie
WO2012078829A1 (fr) * 2010-12-10 2012-06-14 Dow Global Technologies Llc Films ayant un coefficient de friction amélioré
DE202011110798U1 (de) 2011-05-03 2016-08-09 Flexopack S.A. Abfallverpackungssystem und Folie
DE202011110797U1 (de) 2011-06-16 2016-08-10 Flexopack S.A. Abfallverpackungssystem und Folie
DE102011108402A1 (de) 2011-07-26 2013-01-31 Sig Technology Ag Flächenförmiger verbund mit kunststoffschichten unterschiedlicher vicat-erweichungstemperaturen
DE102011108401A1 (de) * 2011-07-26 2013-01-31 Sig Technology Ag Robuster flächenförmiger Verbund mit einer Zwischenschicht mit erhöhter Vicat-Erweichungstemperatur
CN102952349B (zh) * 2011-08-23 2014-09-17 扬州市大明包装制品有限公司 马口铁瓶盖内聚氯乙烯密封胶垫片的制备方法
DE11788360T1 (de) * 2011-11-22 2016-09-08 Danapak Flexibles A/S Blech, Verfahren zu seiner Herstellung und Verwendung des Blechs als Deckel für Verpackungen
US9604430B2 (en) 2012-02-08 2017-03-28 Flexopack S.A. Thin film for waste packing cassettes
USD688942S1 (en) 2012-09-10 2013-09-03 The Hillshire Brands Company Packaging for food product
USD712250S1 (en) 2012-09-10 2014-09-02 The Hillshire Brands Company Packaging for food product
USD704552S1 (en) 2012-09-10 2014-05-13 The Hillshire Brands Company Packaging for food product
USD704553S1 (en) 2012-09-10 2014-05-13 The Hillshire Brands Company Packaging for food product
AU2014203227B2 (en) 2013-06-14 2018-01-04 Flexopack S.A. Heat shrinkable film
EP3119605A1 (fr) * 2014-03-21 2017-01-25 Infiana Germany GmbH & Co. KG Emballage
DE102015100106A1 (de) * 2014-04-08 2015-10-08 Huhtamaki Flexible Packaging Germany Gmbh & Co. Kg Laminat, insbesondere zur Herstellung von Deckelmaterial, Verfahren zu dessen Herstellung sowie Deckelmaterial aus einem solchen Laminat
JP2017522239A (ja) * 2014-06-19 2017-08-10 アグロフレッシュ インコーポレイテッド 青果物の包装用の組成物および方法
US9409380B2 (en) 2014-10-31 2016-08-09 Mcs Industries, Inc. Anti-fog mirror apparatus having a multi-layer film
AU2015258191B2 (en) 2014-11-19 2020-02-27 Flexopack S.A. Oven skin packaging process
CN105437812B (zh) * 2015-12-18 2020-02-18 山东泰宝防伪技术产品有限公司 揭露防伪烫印箔及其制备方法
JP6610338B2 (ja) * 2016-03-02 2019-11-27 三菱ケミカル株式会社 共押出多層フィルムおよび深絞り容器
ES2769071T3 (es) * 2017-02-27 2020-06-24 Cryovac Llc Composición de estanqueidad antiempañante y película de poliéster de múltiples capas coextruida que incluye la misma
EP3501822A1 (fr) 2017-12-22 2019-06-26 Flexopack S.A. Film de revêtement pour fibc
DE102021120802B4 (de) * 2021-08-10 2024-08-22 Loparex Germany Gmbh & Co. Kg Mehrschichtfolie, abdichtungsmaterial, deren verwendung und herstellungsverfahren

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5935572B2 (ja) * 1978-12-30 1984-08-29 シ−アイ化成株式会社 農業用被覆材
US4746562A (en) * 1986-02-28 1988-05-24 W. R. Grace & Co., Cryovac Div. Packaging film
US4876146A (en) * 1986-05-01 1989-10-24 Toyo Boseki Kabushiki Kaisha Anti-fogging multilayered film and bag produced therefrom for packaging vegetables and fruits
US5262233A (en) * 1991-02-19 1993-11-16 Mitsubishi Petrochemical Co., Ltd. Agricultural film
IT1269174B (it) * 1994-01-11 1997-03-21 Grace W R & Co Pellicola dotata di elevate proprieta' anti-condensa metodo per confezionare prodotti ad alto contenuto di umidita' e prodotti cosi' confezionati
DE69519776T3 (de) * 1994-09-13 2005-09-29 Mitsubishi Chemical Corp. Biaxial gereckte Verbundfolie
US6500559B2 (en) * 1998-05-04 2002-12-31 Cryovac, Inc. Multiple layer film with amorphous polyamide layer
EP1041105A3 (fr) * 1999-03-31 2002-01-02 Chuo Kagaku Co. Ltd. Feuille antibuée et récipient en contenant
AU2001248764A1 (en) * 2000-04-18 2001-10-30 Gunze Limited Anti-fogging, stretched multilayer film excellent in quick-acting property and method for producing the same
DE10113281C1 (de) * 2001-03-16 2002-10-02 Trespaphan Gmbh Bedruckbare Polypropylenfolie mit Antibeschlageigenschaften
US6838186B2 (en) * 2002-04-22 2005-01-04 Polinas Plastic Of America, Inc. Multilayer oriented antimicrobial and antifogging films

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006053885A2 *

Also Published As

Publication number Publication date
RU2007122211A (ru) 2009-03-27
WO2006053885A3 (fr) 2006-12-28
WO2006053885A9 (fr) 2007-02-15
DE102004055323A1 (de) 2006-05-18
US20080113133A1 (en) 2008-05-15
WO2006053885A2 (fr) 2006-05-26

Similar Documents

Publication Publication Date Title
EP1814731A2 (fr) Films transparents aptes a l'emboutissage profond possedant des proprietes antibuee
DE102008056123B4 (de) Mehrschichtfolie und Blisterverpackung
DE69533522T2 (de) Streckbarer Film aus Polyolefin
DE60224993T2 (de) Deckelfolienlaminat
EP1855947B1 (fr) Materiau d'emballage thermoformable presentant des proprietes de retrecissement
DE60032170T2 (de) Antischleierfilm, der entweder mit zelluloseester tinte bedruckt ist oder einen firnisüberzug enthält
DE60225935T2 (de) Verpackungslaminat für einen sterilisierbaren verpackungsbehälter
EP2061652A2 (fr) Matériau d'emballage thermoformable présentant des propriétés de rétrécissement
DE102011108401A1 (de) Robuster flächenförmiger Verbund mit einer Zwischenschicht mit erhöhter Vicat-Erweichungstemperatur
DE202010007972U1 (de) Klare transparente Antifog-Mehrschicht-Folie
DE102011108402A1 (de) Flächenförmiger verbund mit kunststoffschichten unterschiedlicher vicat-erweichungstemperaturen
EP1372957B1 (fr) Feuille de polypropylene imprimable ayant des proprietes d'anti-condensation
EP1098763A1 (fr) Feuille a emboutir coextrudee, symetrique, a plusieurs couches et n'ayant pas tendance a s'enrouler
DE102012014261A1 (de) Flächenförmiger verbund mitkunststoffschichten unterschiedlicherdämpfungseigenschaften
EP3003708A1 (fr) Feuille en polypropylène pouvant être scellée
EP2684675B1 (fr) Polymer film for in-mould labelling
DE69820627T2 (de) Kondensationsbeständiger verpackungsfilm
EP1145843B1 (fr) Feuille thermosoudable contenant des propriétés antibuée et une haute capacité d'arrêt de l'oxygène et leur utilisation comme matériau d'emballage
DE102018218053A1 (de) Mehrschichtige Haftfolie
EP3436267B1 (fr) Feuille de scellement multicouche et feuille stratifiée munie d'une feuille de scellement multicouche
EP1833670B1 (fr) Films multicouches thermoformables
EP0755778A1 (fr) Film barrière stérilisable à base de polyamides et de polyoléfines
EP0733471B1 (fr) Feuille d'emballage multicouche, stérilisable et sans adhésif
DE102009021713A1 (de) Peelbare, transparente Polyesterfolie für unpolare Substrate mit Antifogbeschichtung
AT8751U1 (de) Metallisierte mehrschichtfolie

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20070628

RBV Designated contracting states (corrected)

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

DAX Request for extension of the european patent (deleted)
17Q First examination report despatched

Effective date: 20090508

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20090919