EP3585609A1 - Container covered with a film - Google Patents
Container covered with a filmInfo
- Publication number
- EP3585609A1 EP3585609A1 EP18706987.7A EP18706987A EP3585609A1 EP 3585609 A1 EP3585609 A1 EP 3585609A1 EP 18706987 A EP18706987 A EP 18706987A EP 3585609 A1 EP3585609 A1 EP 3585609A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- container according
- film
- elastomer
- thermoplastic
- 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- Withdrawn
Links
- 238000007789 sealing Methods 0.000 claims abstract description 34
- 241000251468 Actinopterygii Species 0.000 claims abstract description 12
- 235000013351 cheese Nutrition 0.000 claims abstract 2
- 244000144977 poultry Species 0.000 claims abstract 2
- 235000020991 processed meat Nutrition 0.000 claims abstract 2
- 229920000728 polyester Polymers 0.000 claims description 45
- 229920000642 polymer Polymers 0.000 claims description 45
- 229920001971 elastomer Polymers 0.000 claims description 37
- 239000000806 elastomer Substances 0.000 claims description 37
- 229920001169 thermoplastic Polymers 0.000 claims description 36
- -1 poly(ethylene oxide) Polymers 0.000 claims description 30
- 239000004416 thermosoftening plastic Substances 0.000 claims description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 23
- 230000008018 melting Effects 0.000 claims description 16
- 238000002844 melting Methods 0.000 claims description 16
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 15
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 15
- 230000009477 glass transition Effects 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 14
- 238000010521 absorption reaction Methods 0.000 claims description 12
- 150000002009 diols Chemical class 0.000 claims description 12
- 235000013305 food Nutrition 0.000 claims description 12
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 claims description 10
- 229920000747 poly(lactic acid) Polymers 0.000 claims description 9
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 8
- 235000013311 vegetables Nutrition 0.000 claims description 7
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 claims description 2
- 235000013399 edible fruits Nutrition 0.000 claims description 2
- 229920001451 polypropylene glycol Polymers 0.000 claims description 2
- 238000002604 ultrasonography Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000004806 packaging method and process Methods 0.000 abstract description 32
- 238000011109 contamination Methods 0.000 abstract description 11
- 238000012858 packaging process Methods 0.000 abstract description 7
- 229920008790 Amorphous Polyethylene terephthalate Polymers 0.000 abstract description 3
- 229920008651 Crystalline Polyethylene terephthalate Polymers 0.000 abstract 2
- 235000012055 fruits and vegetables Nutrition 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 150
- 230000004888 barrier function Effects 0.000 description 19
- 239000004698 Polyethylene Substances 0.000 description 17
- 235000013372 meat Nutrition 0.000 description 17
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 16
- 229920000573 polyethylene Polymers 0.000 description 15
- 238000012360 testing method Methods 0.000 description 14
- 230000008569 process Effects 0.000 description 13
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 12
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 12
- 239000011347 resin Substances 0.000 description 11
- 229920005989 resin Polymers 0.000 description 11
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 10
- 239000000463 material Substances 0.000 description 10
- 239000001301 oxygen Substances 0.000 description 10
- 229910052760 oxygen Inorganic materials 0.000 description 10
- 238000000576 coating method Methods 0.000 description 9
- 150000001991 dicarboxylic acids Chemical class 0.000 description 9
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 9
- 229920001634 Copolyester Polymers 0.000 description 8
- 239000000654 additive Substances 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 239000004715 ethylene vinyl alcohol Substances 0.000 description 8
- 230000008014 freezing Effects 0.000 description 7
- 238000007710 freezing Methods 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 239000000758 substrate Substances 0.000 description 6
- 238000013459 approach Methods 0.000 description 5
- 235000021022 fresh fruits Nutrition 0.000 description 5
- 238000003475 lamination Methods 0.000 description 5
- 239000004626 polylactic acid Substances 0.000 description 5
- 229920006344 thermoplastic copolyester Polymers 0.000 description 5
- 229920002799 BoPET Polymers 0.000 description 4
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 description 4
- 239000004793 Polystyrene Substances 0.000 description 4
- 229920006378 biaxially oriented polypropylene Polymers 0.000 description 4
- 239000011127 biaxially oriented polypropylene Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- RZXDTJIXPSCHCI-UHFFFAOYSA-N hexa-1,5-diene-2,5-diol Chemical compound OC(=C)CCC(O)=C RZXDTJIXPSCHCI-UHFFFAOYSA-N 0.000 description 4
- 229920002223 polystyrene Polymers 0.000 description 4
- 238000004064 recycling Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000013022 venting Methods 0.000 description 4
- 239000004721 Polyphenylene oxide Substances 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 150000002148 esters Chemical class 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- RXOHFPCZGPKIRD-UHFFFAOYSA-N naphthalene-2,6-dicarboxylic acid Chemical compound C1=C(C(O)=O)C=CC2=CC(C(=O)O)=CC=C21 RXOHFPCZGPKIRD-UHFFFAOYSA-N 0.000 description 3
- 239000012785 packaging film Substances 0.000 description 3
- 229920006280 packaging film Polymers 0.000 description 3
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 3
- 229920006267 polyester film Polymers 0.000 description 3
- 229920000570 polyether Polymers 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 229910052814 silicon oxide Inorganic materials 0.000 description 3
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 2
- 229910017107 AlOx Inorganic materials 0.000 description 2
- 229920011186 Arnitel® EM630 Polymers 0.000 description 2
- 240000008415 Lactuca sativa Species 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 2
- 235000013330 chicken meat Nutrition 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 235000012054 meals Nutrition 0.000 description 2
- 229920002959 polymer blend Polymers 0.000 description 2
- 229920005606 polypropylene copolymer Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 235000012045 salad Nutrition 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 229920002725 thermoplastic elastomer Polymers 0.000 description 2
- 230000003313 weakening effect Effects 0.000 description 2
- NEQFBGHQPUXOFH-UHFFFAOYSA-N 4-(4-carboxyphenyl)benzoic acid Chemical compound C1=CC(C(=O)O)=CC=C1C1=CC=C(C(O)=O)C=C1 NEQFBGHQPUXOFH-UHFFFAOYSA-N 0.000 description 1
- 229920008132 Arnitel® VT3108 Polymers 0.000 description 1
- 102000004506 Blood Proteins Human genes 0.000 description 1
- 108010017384 Blood Proteins Proteins 0.000 description 1
- 101150076480 COPE gene Proteins 0.000 description 1
- 101100384819 Caenorhabditis elegans cope-1 gene Proteins 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical group C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 229920011453 Hytrel® 4056 Polymers 0.000 description 1
- 229920007230 Hytrel® HTR8206 Polymers 0.000 description 1
- JHWNWJKBPDFINM-UHFFFAOYSA-N Laurolactam Chemical compound O=C1CCCCCCCCCCCN1 JHWNWJKBPDFINM-UHFFFAOYSA-N 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 239000005041 Mylar™ Substances 0.000 description 1
- 239000006057 Non-nutritive feed additive Substances 0.000 description 1
- 229920000299 Nylon 12 Polymers 0.000 description 1
- 229920002292 Nylon 6 Polymers 0.000 description 1
- 101100384814 Oryza sativa subsp. japonica COPE1 gene Proteins 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 229920002614 Polyether block amide Polymers 0.000 description 1
- YIMQCDZDWXUDCA-UHFFFAOYSA-N [4-(hydroxymethyl)cyclohexyl]methanol Chemical compound OCC1CCC(CO)CC1 YIMQCDZDWXUDCA-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229920006125 amorphous polymer Polymers 0.000 description 1
- 230000000845 anti-microbial effect Effects 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- CDQSJQSWAWPGKG-UHFFFAOYSA-N butane-1,1-diol Chemical compound CCCC(O)O CDQSJQSWAWPGKG-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 229920006039 crystalline polyamide Polymers 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004794 expanded polystyrene Substances 0.000 description 1
- 238000007765 extrusion coating Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000012793 heat-sealing layer Substances 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 235000015090 marinades Nutrition 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 235000021485 packed food Nutrition 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920005644 polyethylene terephthalate glycol copolymer Polymers 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 235000015504 ready meals Nutrition 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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
- B32B1/00—Layered products having a non-planar shape
-
- 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
- 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
- B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
- B32B27/285—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42 comprising polyethers
-
- 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
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
-
- 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
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- 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
- B32B2274/00—Thermoplastic elastomer 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/31—Heat sealable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/514—Oriented
- B32B2307/518—Oriented bi-axially
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/726—Permeability to liquids, absorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/732—Dimensional properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/738—Thermoformability
-
- 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
Definitions
- Another container for the packaging of fresh meat and fish comprises a tray consisting out of polypropylene covered with a lidding film.
- the lidding film for this container preferably consist out of biaxially oriented polypropylene film and a multilayer sealing film.
- the multilayer film preferably further comprises a layer of ethylene vinyl alcohol (EVOH) as an oxygen barrier layer.
- EVOH ethylene vinyl alcohol
- the EVOH layer is bound between polypropylene copolymer sealing layer and another polyethylene support layer via a tie layer during an multilayer extrusion process.
- the biaxially oriented polypropylene layer and the multilayer seal layer are glued together in a lamination step.
- the lidding film is preferably coated with an antifog coating to ensure a good presentation of the packed produce.
- Another container for the packaging of fresh meat and fish comprises a tray comprising a polystyrene, more preferably an expanded polystyrene layer and a polyethylene layer.
- the polyethylene layer in the tray preferably further comprises a layer of ethylene vinyl alcohol (EVOH) as the oxygen barrier layer.
- EVOH ethylene vinyl alcohol
- the EVOH layer is bound between a polyethylene sealing layer and another polyethylene support layer via a tie layer during an multilayer extrusion process.
- the polystyrene layer and the seal layer are glued together in a lamination step.
- a polymeric sealing layer with specific properties to, a preferably biaxially oriented, thermoplastic polymer carrier layer, such as a polyethylene terephthalate based lidding film, can advantageously be used to provide a container for the packaging of fresh meat and fish that fulfills some or all desires expressed.
- the total amount of all the diols also adds up to 100 mol%.
- Other dicarboxylic acids and diols can be used for the polymer composition of the first polymer layer. These dicarboxylic acids and diols are known to people skilled in the art. It is particularly advantageous when a polyester based on terephthalate and small amounts ( ⁇ 5 mol %) of isophthalic acid or based on small amounts ( ⁇ 5 mol %) of naphthalene-2,6-dicarboxylic acid is used in the in composition of the polymer formulation of the first polymer layer. In this case, the produce ability of the film and the optical properties of the film are particularly good.
- the first polymer layer then comprises substantially a polyester copolymer which is composed predominantly out of terephthalic acid and isophthalic acid units and/or terephthalic acid and naphthalene-2,6-dicarboxylic acid units and of ethylene glycol units.
- the particularly preferred copolyesters which provide the desired properties of the film are those which are composed of terephthalate and isophthalate units and of ethylene glycol units.
- SiOx gas barrier layer compared to other gas barrier materials are firstly that it has a positive environmental profile, secondly, that it is not affected when in contact with surrounding moisture or liquid, it is transparent and since it is applied in very thin layers, also flexible and resistant to cracking when bent or folded.
- the first polymer layer can comprise a thin layer of SiOx or AlOx gas barrier coating applied by means of plasma enhanced chemical vapor deposition.
- the terms hard segments and soft segments in relation to thermoplastic polyetherester elastomers can be explained as follows.
- the soft segments are the polyether segments, having a weakening point below room temperature.
- the hard segments are the polyester segments, having a weakening temperature above room temperature.
- the thermoplastic polyetherester elastomer may contain between 10 and 90 wt. % of the polyethylene oxide soft segments, preferably between 15 and 70 wt. %, more preferably between 20 - 60 wt.%, most preferably between 25 and 50 wt. %. This ensures good anti-fog properties of the packaging.
- the polyethylene oxide segments may be incorporated in the thermoplastic polyetherester elastomer as poly(ethylene oxide)diol soft segments and/or poly(ethylene oxide/polypropylene oxide/polyethylene oxide)diol soft segments.
- the thermoplastic copolyetherester elastomer may comprise further soft segments. These further soft segments may comprise amongst others poly(tetramethylene oxide) diol.
- Suitable copolyether esters can include products commercially available from companies under tradenames, for example, HytrelTM available from E. I. du Pont de Nemours and Company (DuPont), RiteflexTM available from Ticona, and ArnitelTM available from DSM.
- HytrelTM available from E. I. du Pont de Nemours and Company (DuPont)
- RiteflexTM available from Ticona
- ArnitelTM available from DSM.
- Polyamides may be nylon 6 or nylon 12.
- a commercially available series of polyetheramides are available under the tradename PebaxTM from Arkema.
- the thickness of the second layer is between 5 micrometers and 50 micrometers, more preferably between 10 micrometers and 30 micrometers.
- the multi-layer packaging film according to the invention can be produced according to a coextrusion cast film process or a coextrusion blown film process. After coextrusion, the cast film is preferably biaxially oriented.
- the coextrusion blown film process can be a single bubble blown film process or a double or triple bubble blown film process.
- the blown film process is a double or triple blown film process, such that a biaxially oriented blown film has been produced. It is also possible to apply the second layer by lamination or extrusion coating onto the first layer, which preferably has been biaxially oriented before.
- the multi-layer packaging film according to the invention may be printed.
- the film optionally contains perforations, preferably in the form of micro-perforations.
- the size of the perforation is preferably between 50 micrometers and 300 micrometers and even more preferably between 70 and 130 micrometers.
- laser technology is used for the formation of the perforations.
- the number of perforations are up to 1000 per m 2 and more preferably up to 500 per m 2 .
- Figure 2 is a sectional view of film (1) according to the present invention comprising a carrier (2) layer, a tie layer or bonding layer (3) and a heat seal layer (4) in which there is dispersed a non-compatible polymer (5).
- COPE 1 Thermoplastic copolyesters ether heat sealable resin: Hytrel HTR8171 available from E. I. du Pont de Nemours and Company (DuPont). The heat seal resin has a water absorption of 54 wt%, a melting point of 150°C and a glass transition temperature of -42°C.
- COPE 2 Thermoplastic copolyesters ether heat sealable resin: Hytrel G3548 available from E. I. du Pont de Nemours and Company (DuPont). The heat seal resin has a water absorption of 7 wt%, a melting point of 157°C and a glass transition temperature of -58°C.
- COPE 3 Thermoplastic copolyesters ether heat sealable resin: Hytrel HTR8206 available from E. I. du Pont de Nemours and Company (DuPont). The heat seal resin has a water absorption of 30 wt%, a melting point of 200°C and a glass transition temperature of - 38°C.
- COPE 4 Thermoplastic copolyesters ether heat sealable resin: Arnitel VT3108 available from DSM Engineering Plastics. The heat seal resin has a water absorption of 33 wt%, a melting point of 185°C and a glass transition temperature of - 45°C.
- the carrier films were used as received and the films were subsequently coated with a primer layer, the water was evaporated to leave the primer material behind and the pretreated carrier films were coated using conventional coating means with the heat seal layers described. Table 1 lists the films made out of the different combinations of carrier films and heat seal films.
- anti-fog properties of films has been done with the so called hot fog test.
- a jar filled with water and lidded with a glass plate is placed into an oven at 70°C.
- An airgap of 2 cm is kept between the water level and glass plate.
- the jar is removed and the glass plate is replaced quickly with the test substrate.
- the speed at which visual fog formation appears underneath the film is a measure for the anti-fog properties of the film.
- Anti-fog properties are considered poor if fog appears within 5 seconds, moderate if it appears between 5 to 10 seconds and good is it appears between 10 to 15 seconds. If the film stays clear for maximum 15 seconds anti-fog properties are excellent.
- the purpose of this invention is to provide a lidding film which is suitable for polyester containers in the fresh meat packaging industry as well as the fresh fruits and vegetables packaging industry.
- the film according to example 1 & 2 is able to i) seal through contamination at 170°C ii) seal on clean PET trays at 130°C iii) show good to excellent anti-fog properties and iv) stays intact at freezing conditions during an impact test.
- the films according to any of the comparative examples 1-4 fail on 1 or more aspects of the purpose of the invention.
- the film according to comparative example 1 & 2 fail on the decreased seal through contamination test as well as the clean seal test.
- the film according to comparative example 3 fails in the anti-fog test and the film according to comparative example 4 fails in the decreased seal through contamination trial as well as the freezer test.
- PLA polylactic acid or polylactide
- COPE1 COPE1
- PLA is a polyester which is commercial available and helps in sustainability.
- a thermoformed polyester tray is filled with a food item.
- thermoformed tray a heat sealable multi-layered film is sealed the multilayered film comprising a carrier layer and a heat-seal layer, wherein the carrier layer consists of;
- a polymer composition consisting of at least 80% by weight of thermoplastic polymer based on the total weight of the carrier layer and the heat seal layer consists of;
- thermoplastic copolyesterether elastomer or copolyetheramide elastomer has; i. a water absorption above 3 wt%, based on the mass of the thermoplastic copolyesterether elastomer or copolyetheramide elastomer
- the carrier layer and/or the heat seal layer comprises any one or more, alone or in any combination of the above described features for preferred embodiments of the container according to the invention. Sealing of the multilayer film to the tray may be accomplished by application of heat or by other methods such as the application of ultrasound.
- US5888599 describes a multi-layer lidding film having an outer copolyester heat seal layer. This layer is not a copolyetherester, but a copolyester layer. Copolyesters do not have any significant water absorption and therefore lack anti-fog properties. Furthermore, the co-polyesters described in US5888599 are amorphous solvent-based polymers. Amorphous polymers do not have a melting point.
- the heat seal layer of US201322441 has no anti-fog properties and is thus completely different from the heat- and anti-fog seal layer according the invention.
- WO2006075141 describes a self-venting sealing film for ovenable meals.
- the self-venting film has a substrate layer with one or more venting means therein. This directly implies that the high oxygen barrier which is needed for sealing film in fresh meat packaging can not be achieved anymore.
- WO2006075141 makes no reference to melting points, glass transition temperature or antifog properties.
- copolyetherester and copolyesterether used above describe the same substances, namely copolymers comprising an ether and an ester. Both terms are used in literature for such substances.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wrappers (AREA)
- Packages (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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BE201705114 | 2017-02-24 | ||
PCT/EP2018/053949 WO2018153795A1 (en) | 2017-02-24 | 2018-02-16 | Container covered with a film |
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Publication Number | Publication Date |
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EP3585609A1 true EP3585609A1 (en) | 2020-01-01 |
Family
ID=61274234
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP18706987.7A Withdrawn EP3585609A1 (en) | 2017-02-24 | 2018-02-16 | Container covered with a film |
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EP (1) | EP3585609A1 (en) |
WO (1) | WO2018153795A1 (en) |
Families Citing this family (1)
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JP2021171962A (en) * | 2020-04-22 | 2021-11-01 | 東洋鋼鈑株式会社 | Heat-sealing film and packaging material |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS599348B2 (en) * | 1975-05-12 | 1984-03-01 | 東レ株式会社 | laminated polyester film |
US5888599A (en) | 1993-04-19 | 1999-03-30 | E. I. Du Pont De Nemours And Company | Multi-layer lidding film having improved heat seal properties and methods relating thereto |
US20050079372A1 (en) | 2003-10-09 | 2005-04-14 | Schmal Michael D. | Polyester films and methods for making the same |
US8858985B2 (en) | 2004-05-12 | 2014-10-14 | E I Du Pont De Nemours And Company | Films comprising a liquid-absorbant inner layer, an antimicrobial material and an impermeable outer layer |
GB0500907D0 (en) | 2005-01-17 | 2005-02-23 | Dupont Teijin Films Us Ltd | Self-venting polymeric film IV |
DE202010008675U1 (en) | 2010-09-30 | 2011-01-27 | Kobusch-Sengewald Gmbh | Multilayer film |
CA2778157A1 (en) | 2011-07-20 | 2013-01-20 | Thor's Oil Products, Inc. | Method and apparatus for bulk transport of proppant |
US20130224411A1 (en) | 2012-02-27 | 2013-08-29 | Jon Ian MONTCRIEFF | Peelable antifog coated film for amorphous polyester trays |
-
2018
- 2018-02-16 WO PCT/EP2018/053949 patent/WO2018153795A1/en unknown
- 2018-02-16 EP EP18706987.7A patent/EP3585609A1/en not_active Withdrawn
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