EP4038131A1 - Folie, insbesondere abdeckfolie für lebensmittelbehältnisse und/oder pharmazeutische produkte - Google Patents
Folie, insbesondere abdeckfolie für lebensmittelbehältnisse und/oder pharmazeutische produkteInfo
- Publication number
- EP4038131A1 EP4038131A1 EP20793274.0A EP20793274A EP4038131A1 EP 4038131 A1 EP4038131 A1 EP 4038131A1 EP 20793274 A EP20793274 A EP 20793274A EP 4038131 A1 EP4038131 A1 EP 4038131A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- film
- component
- coating
- film according
- food
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000825 pharmaceutical preparation Substances 0.000 title claims description 12
- 229940127557 pharmaceutical product Drugs 0.000 title claims description 12
- 238000007789 sealing Methods 0.000 title abstract description 5
- 239000011248 coating agent Substances 0.000 claims abstract description 35
- 238000000576 coating method Methods 0.000 claims abstract description 35
- 229920001634 Copolyester Polymers 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 14
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 14
- 150000001875 compounds Chemical class 0.000 claims abstract description 8
- 229940126062 Compound A Drugs 0.000 claims abstract description 6
- NLDMNSXOCDLTTB-UHFFFAOYSA-N Heterophylliin A Natural products O1C2COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC2C(OC(=O)C=2C=C(O)C(O)=C(O)C=2)C(O)C1OC(=O)C1=CC(O)=C(O)C(O)=C1 NLDMNSXOCDLTTB-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229920001577 copolymer Polymers 0.000 claims abstract description 4
- 239000010408 film Substances 0.000 claims description 45
- 229920005989 resin Polymers 0.000 claims description 19
- 239000011347 resin Substances 0.000 claims description 19
- 235000013305 food Nutrition 0.000 claims description 17
- 239000013039 cover film Substances 0.000 claims description 15
- 238000004806 packaging method and process Methods 0.000 claims description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 12
- 229920000098 polyolefin Polymers 0.000 claims description 12
- 239000004922 lacquer Substances 0.000 claims description 8
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 7
- 230000009477 glass transition Effects 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 4
- 239000003054 catalyst Substances 0.000 claims description 4
- GZVHEAJQGPRDLQ-UHFFFAOYSA-N 6-phenyl-1,3,5-triazine-2,4-diamine Chemical compound NC1=NC(N)=NC(C=2C=CC=CC=2)=N1 GZVHEAJQGPRDLQ-UHFFFAOYSA-N 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 3
- 229920003987 resole Polymers 0.000 claims description 3
- 229920000877 Melamine resin Polymers 0.000 claims description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 2
- 239000011888 foil Substances 0.000 claims description 2
- 239000000306 component Substances 0.000 claims 9
- 239000000758 substrate Substances 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 15
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 10
- 229920000139 polyethylene terephthalate Polymers 0.000 description 10
- 239000005020 polyethylene terephthalate Substances 0.000 description 10
- 239000004743 Polypropylene Substances 0.000 description 9
- 239000003973 paint Substances 0.000 description 7
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- -1 polypropylene Polymers 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- 239000004921 DEGALAN® Substances 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 230000001954 sterilising effect Effects 0.000 description 3
- 238000004659 sterilization and disinfection Methods 0.000 description 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- YKYONYBAUNKHLG-UHFFFAOYSA-N propyl acetate Chemical compound CCCOC(C)=O YKYONYBAUNKHLG-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- CCTFMNIEFHGTDU-UHFFFAOYSA-N 3-methoxypropyl acetate Chemical compound COCCCOC(C)=O CCTFMNIEFHGTDU-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Natural products C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 239000002318 adhesion promoter Substances 0.000 description 1
- XYLMUPLGERFSHI-UHFFFAOYSA-N alpha-Methylstyrene Chemical compound CC(=C)C1=CC=CC=C1 XYLMUPLGERFSHI-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 235000013365 dairy product Nutrition 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000004920 heat-sealing lacquer Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 239000004006 olive oil Substances 0.000 description 1
- 235000008390 olive oil Nutrition 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000747 poly(lactic acid) Polymers 0.000 description 1
- 239000004626 polylactic acid Substances 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 235000020991 processed meat Nutrition 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000011877 solvent mixture Substances 0.000 description 1
- WMOVHXAZOJBABW-UHFFFAOYSA-N tert-butyl acetate Chemical compound CC(=O)OC(C)(C)C WMOVHXAZOJBABW-UHFFFAOYSA-N 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/042—Coating with two or more layers, where at least one layer of a composition contains a polymer binder
-
- 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
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
- B65D65/42—Applications of coated or impregnated materials
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/0427—Coating with only one layer of a composition containing a polymer binder
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
- C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09D133/062—Copolymers with monomers not covered by C09D133/06
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
- C09D167/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2433/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2433/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
- C08J2433/06—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters of esters containing only carbon, hydrogen, and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C08J2433/10—Homopolymers or copolymers of methacrylic acid esters
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
Definitions
- Film in particular cover film for food containers and / or pharmaceutical products
- the present invention relates to a film and in particular a film which can be used for example to cover containers such as food containers.
- Such films have long been known from the prior art.
- One type of known film consists of PP (polypropylene) and is also used to cover PP cups, trays and containers.
- Such film carriers are usually formed with heat-sealable lacquers on a PET layer. These usually require a primary layer (such as polyurethane or polyester-based paints) and the heat-sealable layer is composed of bisphenol A resin, polyolefin, styrene copolymer (SBS rubber), alpha-methylstyrene resin (MS) and vinyl chloride -Copolymers applied.
- SBS rubber polyolefin
- MS alpha-methylstyrene resin
- vinyl chloride -Copolymers applied. This means that the final structure has chlorine, BPA and styrene-formed components. These components are seen more and more as critical for food applications and customers would like to do without them. Because of the SBS / MS components, the grease resistance of the paint layer is also limited.
- a primer means an additional layer and thus a higher production expenditure and, consequently, more material expenditure.
- the present invention is therefore based on the object of providing a film or, in particular, a cover film which is simpler to manufacture and which preferably also dispenses with problematic components that are no longer desired by the consumer.
- a film should also be made available which dispenses with a primary layer or a primer and is resistant to sterilization.
- a film in particular a cover film, for example for food containers or for pharmaceutical products, has a base support and a coating arranged at least indirectly on the base support.
- the coating is preferably arranged directly and / or over the entire surface of this base support.
- the base support is made of a PET-containing material and the Beschich device has a first component in the form of a saturated, high molecular weight, linear copolyester compound A with an average molar mass of at least 10,000 g / mol and a second component in Form of a saturated, high molecular weight, linear, elasticized copolyester compound B with an average molar mass of at least 10,000 g / mol and a third component in the form of a polyolefin copolymer.
- the first and / or second component is preferably a component with a high molecular weight.
- a high molecular weight denotes molecular weights of more than 10,000, preferably more than 13,000, preferably more than 16,000, preferably more than 20,000, g / mol.
- the first component has a hydroxyl number which is a maximum of 9 mg KOH / g.
- the first component particularly preferably also has an acid number of at most 3 and a glass transition temperature of at least 65.degree.
- the first component particularly preferably has an average molar mass which is less than 40,000 g / mol, preferably less than 30,000 g / mol, preferably less than 25,000 g / mol.
- the first component preferably has a density between 0.8 and 1.5 g / cm 3 , preferably between 0.9 and 1.3 g / cm 3 and preferably between 1.1 and 1.3 g / cm 3 lies.
- the first component Dynapol® ® L206 is.
- the first component is preferably a saturated, high molecular weight, linear copolyester.
- the first component can be part of a paint, for example. This has the advantage of being particularly easy to process.
- the first component is particularly preferably hard, flexible and firmly adhered to materials and particularly preferably has good chemical resistance.
- this first component can be in the form of solid resin, granules or a solution.
- the second component or the compound B preferably has an acid number of at most 3, a hydroxyl number of at most 5 and a glass transition temperature of at least 10 ° C.
- the third component or the polyolefin preferably has a glass transition temperature of at least -55 ° C. and a molecular weight of at least 160,000 g / mol.
- the PET material is selected from a group of materials which contains PET, PET-PET material composites and aluminum-PET composites.
- the base support has a thickness which is greater than 6 ⁇ m, preferably greater than 10 ⁇ m, preferably greater than 20 ⁇ m and particularly preferably greater than 30 ⁇ m.
- the base carrier has a thickness which is less than 100 ⁇ m, preferably less than 80 ⁇ m, preferably less than 60 ⁇ m and particularly preferably less than 55 ⁇ m. In a further preferred embodiment, the base carrier is designed in the manner of a film.
- the coating is preferably applied over the entire surface of this base carrier and particularly preferably over the entire surface.
- the carrier is particularly preferably a flat film. A surface of this film can optionally be corona-treated.
- the coating is arranged on the carrier without primer or the film has no primer or no primer layer.
- a primer is understood to mean a top or intermediate layer which can serve, for example, as a protective layer for an underlying layer or can act as an adhesion promoter or better for the connection between a carrier and a further layer.
- the coating is particularly preferably designed as only a single layer with a single mixture. However, it would also be possible for several layers, in particular also the single mixture, to be applied.
- the layer thickness particularly preferably has a weight per unit area which is greater than 1 g / m 2 , preferably greater than 2 g / m 2 , preferably greater than 4 g / m 2 , preferably greater than 5 g / m 2 , preferably greater than 15 g / m 2 , preferably greater than 20 g / m 2 .
- the coating has a weight per unit area which is less than 80 g / m 2 , preferably less than 60 g / m 2 , preferably less than 50 g / m 2 , preferably less than 40 g / m 2 and preferred less than 30 g / m 2 .
- the cover film is particularly preferably used for packaging food, such as dairy products or processed meat.
- the cover film can also be used to cover pharmaceutical products.
- the cover film is particularly preferably designed together with a packaging, in particular a packaging made of PP.
- This packaging can be, for example, bowls or so-called trays.
- the film can preferably also be used as bag packaging.
- Bag packaging in the context of the invention is generally understood to mean a packaging container which consists of film material or is essentially composed of it.
- sachets, three- and four-sided bags, bags with a bottom fold inserted from two sides, bags with side surfaces, bags with bottom surfaces or bag flow packs with overlapping sealing seams are understood as bag packaging in a non-limiting manner.
- the carrier or the base substrate is a flat film that is optionally corona-treated on at least one side. In particular, that side of the carrier on which the coating is arranged is corona-treated.
- the second component is particularly preferably also a saturated, high molecular weight, linear, elasticized copolyester compound B.
- the polyolefin copolymer comprises methacrylic acid ester-olefin and polyester.
- said polyolefin Degalan ® 4174E is.
- Degalan ® 4294E or Degalan ® 4174E could be used as appropriate polyoelfinische component.
- This is an organic dispersion for use as a chlorine-free binder for heat-sealing lacquers.
- This has a direct adhesion for sealing untreated PET or aluminum foils, in particular with respect to polypropylene, polystyrene, PET, PLA or PVC.
- the coating also contains a resin as a further component.
- This resin is particularly preferably selected from a group of resins and / or has a component selected from a group of components which contains reactive resins, benzoguanamine resins, melamine resins, resol resins or combinations thereof .
- a preferred embodiment involves BPA (bisphenol A) -free resole resins. These resins are particularly preferably used to improve the chemical stability and the cohesion of the paint film.
- the coating is a lacquer layer and / or a lacquer film.
- the second component has at least one hydroxyl group.
- the second component containing the hydroxyl group particularly preferably has a hydroxyl number of at least 4, preferably at least 5, particularly preferably at least 6 (mg KOH / g), based on DIN 53420.
- the second component particularly preferably has a saturated, high molecular weight, linear and highly elasticized copolyester.
- the second component to Dynapol ® LS 415 -34.
- the coating also has a catalyst.
- a catalyst for example, phosphoric acid could be used.
- silica (silica) or a silica antiblock composition could also be used for the coating.
- the film preferably comprises silica.
- the coating and / or film described here has at least a sealing seam strength of more than 6N per 15 mm, based on DIN 55529, in particular after a heat treatment of 120 ° for approx. 30 min or a 30-minute boiling time, for example 95 ° C water temperature.
- the film is preferably sealed by means of polypropylene trays, containers or cups or used to seal polypropylene trays, containers or cups. This can take place at a temperature of 240 °, a period of 0.5 seconds and / or a pressure of 3 bar. This achieves the same level as compared to BPA-based paint layers, whereby, as mentioned above, a primer is particularly preferably dispensed with.
- the coating described here is resistant to sterilization, highly fat-resistant and meets the highest standards with regard to olive oil extraction tests for migration studies, which is also an improvement.
- the coating particularly preferably has the first component in a proportion of more than 1, preferably more than 3 percent by mass. Particularly preferably, the Coating the first component with a proportion of less than 20, preferably less than 15, preferably less than 10 and particularly preferably less than 6 percent by mass.
- This information and also the following information are preferably based on a dry film or are mass fraction data in a dry film.
- the stated proportions are preferably in each case mass proportions and / or percentages based on a total mass.
- percentages given in the context of this invention (for example XX%) are to be understood as percentages by mass, unless something to the contrary is explicitly given.
- the coating has the second component with a proportion and in particular a mass proportion of more than 0.5%, preferably more than 1%. In a further preferred embodiment, the coating has the second component in a proportion of less than 7%, preferably less than 6%, preferably less than 5%.
- the coating has the polyolefin copolymer in a proportion of more than 40, preferably more than 50, preferably more than 60, preferably more than 70 and preferably more than 75%.
- the coating particularly preferably has the polyolefin copolymer in a proportion of less than 98, preferably less than 96, preferably less than 95 and preferably less than 94%.
- a non-saturated copolyester can be present as a further component. This particularly preferably has a proportion of more than 0.5%, preferably of more than 1%. This unsaturated copolyester preferably has a proportion of less than 5%, preferably less than 4% and preferably less than 3%. Furthermore, as mentioned above, an antiblocking agent such as silicic acid can also be present. This is preferably present in a mass fraction of more than 0.1%, particularly preferably of more than 1%.
- This antiblocking agent preferably silica, is preferably present in a proportion of less than 5, preferably less than 4 and preferably less than 3%.
- an optional reactive resin preferably a benzoguanamine resin
- this resin is particularly preferably present in a proportion of less than 10%, preferably less than 8%, preferably less than 7% and preferably less than 5%.
- a catalyst for example phosphoric acid
- this is preferably present in a proportion of more than 0.05% and preferably of more than 0.1%.
- This catalyst is preferably present in a proportion of less than 1.0%, preferably less than 0.8%, preferably less than 0.7% and preferably less than 0.6%.
- the present invention is further directed to packaging for food or pharmaceutical products with a receptacle for receiving the food or the pharmaceutical product and a cover film for covering this receptacle, the cover film being a film of the type described above.
- the present invention is directed to a pouch packaging for food to receive for food or pharmaceutical products, the packaging comprising a film of the type described above.
- the preferred embodiments shown below relate - even if only explicitly stated for one of the packages described above - each to both a bag packaging comprising a film of the type described above and a receptacle for receiving the food or the pharmaceutical product with a cover film comprising a film of the type described above.
- the receptacle is preferably formed from a plastic material and in particular from a material which contains PP and in particular from PP.
- the cover film is preferably attached to the receptacle and, in particular, is glued or welded to it.
- the film can preferably also be used to seal bags.
- the present invention is further directed to a method for producing a film and in particular a cover film for food and / or pharmaceutical products.
- a base carrier is first made available, this base carrier having a PET-containing material or consisting of a PET-containing material.
- a coating is applied to at least one surface of the base support, the coating having a first component in the form of a saturated, high molecular weight, linear copolyester compound A with a molar mass of at least 10,000 g / mol, and a second component in the form of a contains saturated, high molecular weight, linear, elasticized copolyester compound B with a molar mass of at least 10,000 g / mol, and a third component in the form of a polyolefin copolymer.
- the coating or individual components of the coating can be applied as a paint.
- suitable solvents for the paint have been found to be suitable solvents and solvent mixtures in which at least one component is preferably selected from a group consisting of butanone (methyl ethyl ketone, MEK), n-propyl acetate, methoxypropyl acetate, ethyl acetate, n-heptane , tert-butyl acetate, and mixtures there of.
- the lacquer can be adjusted to a suitable processing viscosity before application to the carrier, preferably with a lacquering device, for example a roller application method. This could be done, for example, by adapting the solvent in part to the respective requirements.
- the lacquer film is preferably dried in a hot air duct.
- the surface to which the coating is applied is treated and, in particular, corona-treated.
- the film is sterilized in the sealed state.
- Temperatures in the range of 90 to 135 ° can be used.
- the film is sterilized over a period of time that is greater than 5 minutes and preferably greater than 10 minutes. This period of time is particularly preferably less than 50 minutes, preferably less than 70 minutes.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Wood Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Polymers & Plastics (AREA)
- Medicinal Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Inorganic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
- Wrappers (AREA)
- Paints Or Removers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102019126762.5A DE102019126762B4 (de) | 2019-10-04 | 2019-10-04 | Folie für Lebensmittel und/oder pharmazeutische Produkte |
PCT/EP2020/077759 WO2021064231A1 (de) | 2019-10-04 | 2020-10-02 | Folie, insbesondere abdeckfolie für lebensmittelbehältnisse und/oder pharmazeutische produkte |
Publications (1)
Publication Number | Publication Date |
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EP4038131A1 true EP4038131A1 (de) | 2022-08-10 |
Family
ID=72944098
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP20793274.0A Pending EP4038131A1 (de) | 2019-10-04 | 2020-10-02 | Folie, insbesondere abdeckfolie für lebensmittelbehältnisse und/oder pharmazeutische produkte |
Country Status (4)
Country | Link |
---|---|
US (1) | US20230242724A1 (de) |
EP (1) | EP4038131A1 (de) |
DE (1) | DE102019126762B4 (de) |
WO (1) | WO2021064231A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102020117121A1 (de) * | 2020-06-30 | 2021-12-30 | Constantia Pirk Gmbh & Co. Kg | Lackierte und/oder bedruckte Folie für Lebensmittel- und Pharmaverpackungen |
CN115926389A (zh) * | 2022-11-29 | 2023-04-07 | 扬州纳力新材料科技有限公司 | 一种高强度聚酯基膜及其制备方法与在复合集流体中的应用 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE602004009764T2 (de) * | 2003-02-21 | 2008-08-28 | Metabolix, Inc., Cambridge | Pha-klebstoffe |
DE102005042389A1 (de) * | 2005-06-17 | 2006-12-28 | Röhm Gmbh | Heißversiegelungsmasse für Aluminium- und Polyethylenterephthalatfolien gegen Polypropylen-Polyvinylchlorid- und Polystyrolbehälter |
US8507084B2 (en) * | 2006-07-14 | 2013-08-13 | Dupont Teijin Films U.S. Limited Partnership | Multilayer sealant film |
BR112013020336B1 (pt) * | 2011-03-02 | 2021-03-09 | Dow Global Technologies Llc | dispersão aquosa, método para produzir uma dispersão aquosa, composição de revestimento, revestimento, artigo revestido e método para fazer um artigo revestido |
-
2019
- 2019-10-04 DE DE102019126762.5A patent/DE102019126762B4/de active Active
-
2020
- 2020-10-02 US US17/766,481 patent/US20230242724A1/en active Pending
- 2020-10-02 WO PCT/EP2020/077759 patent/WO2021064231A1/de unknown
- 2020-10-02 EP EP20793274.0A patent/EP4038131A1/de active Pending
Also Published As
Publication number | Publication date |
---|---|
WO2021064231A1 (de) | 2021-04-08 |
DE102019126762A1 (de) | 2021-04-08 |
DE102019126762B4 (de) | 2021-08-19 |
US20230242724A1 (en) | 2023-08-03 |
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