Method for the production of a packaging made of thermoformable film having high thermal stability and water- vapour barrier
23 claims: 23 independent, 0 dependent
- 1A process for production of a packaging composed of a thermoformable foil composed of thermoplastic polyolefins via thermoforming, where the material has, after thermoforming, an improved heat-distortion resistance value, and a high water-vapor barrier, which comprises the presence, within the thermoformable foil, of an amount in the range from 5 to 100% by weight of cycloolefin copolymer, based on the total weight of polyolefins, with a glass transition temperature Tg in the range from 65 to 200°C, measured to DIN EN ISO 11357-1 with the aid of a DSC with a heating rate of 10 K/min, and producing therefrom, via thermoforming at a temperature in the range from 70 to 170°C, a packaging having a heat-distortion resistance value in the range from 60 to 200°C. Procédé de fabrication d'un emballage en une feuille thermoformable constituée de polyoléfines thermoplastiques par thermoformage, qui après le thermoformage présente une meilleure stabilité dimensionnelle à chaud et une forte barrière à la vapeur d'eau, caractérisé en ce que la feuille thermoformable contient une quantité comprise dans la plage de 5 à 100 % en poids d'un copolymère cyclooléfinique, par rapport au poids total des polyoléfines, ayant une température de transition vitreuse Tg comprise dans la plage de 65 à 200°C, mesurée selon DIN EN ISO 11357-1 à l'aide d'une ACD pour une vitesse de montée en température de 10 K/min, et en ce que l'emballage fabriqué à partir d'elle par thermoformage à une température comprise dans la plage de 70 à 170°C possède une stabilité dimensionnelle à chaud comprise dans la plage de 60 à 200°C. Verfahren zum Herstellen einer Verpackung aus einer thermoformbaren Folie aus thermoplastischen Polyolefinen durch Thermoformen, die nach dem Thermoformen eine verbesserte Wärmeformbeständigkeit und eine hohe Wasserdampfbarriere besitzt, dadurch gekennzeichnet, dass die thermoformbare Folie eine Menge im Bereich von 5 bis 100 Gew.-% Cycloolefincopolymer, bezogen auf das Gesamtgewicht an Polyolefinen, mit einer Glastemperatur Tg im Bereich von 65 bis 200 °C, gemessen nach DIN EN ISO 11357-1 mit Hilfe einer DSC bei einer Aufheizgeschwindigkeit von 10 K/min, enthält und dass die daraus durch Thermoformen bei einer Temperatur im Bereich von 70 bis 170 °C hergestellte Verpackung eine Wärmeformbeständigkeit im Bereich von 60 bis 200 °C besitzt.
- 2Procédé selon la revendication 1, caractérisé en ce que l'emballage est fabriqué par thermoformage à une température comprise dans la plage de 80 à 160°C. The process as claimed in claim 1, wherein the packaging is produced via thermoforming at a temperature in the range from 80 to 160°C. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Verpackung durch Thermoformen bei einer Temperatur im Bereich von 80 bis 160 °C hergestellt wird.
- 3Procédé selon la revendication 1, caractérisé en ce que le copolymère cyclooléfinique présente une masse moléculaire moyenne, exprimée par Mw, comprise dans la plage de 500 à 2 000 000 g/mole. The process as claimed in claim 1, wherein the average molar mass of the cycloolefin copolymer, expressed as Mw, is in the range from 500 to 2 000 000 g/mol. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass das Cycloolefincopolymer eine mittlere Molmasse, ausgedrückt als Mw, im Bereich von 500 bis 2000000 g/mol besitzt.
- 4Procédé selon la revendication 3, caractérisé en ce que la masse moléculaire moyenne est comprise dans la plage de 1000 à 1 000 000 g/mole. The process as claimed in claim 3, wherein the average molar mass is in the range from 1000 to 1 000 000 g/mol. Verfahren nach Anspruch 3, dadurch gekennzeichnet, dass die mittlere Molmasse im Bereich von 1000 bis 1000000 g/mol liegt.
- 5Procédé selon la revendication 4, caractérisé en ce que la masse moléculaire moyenne est comprise dans la plage de 3000 à 500 000 g/mole. The process as claimed in claim 4, wherein the average molar mass is in the range from 3000 to 500 000 g/mol. Verfahren nach Anspruch 4, dadurch gekennzeichnet, dass die mittlere Molmasse im Bereich von 3000 bis 500000 g/mol liegt.
- 6Procédé selon l'une ou plusieurs des revendications 1 à 5, caractérisé en ce que le copolymère cyclooléfinique présente un indice de viscosité selon DIN 53 728 compris dans la plage de 5 à 5000 ml/g. The process as claimed in one or more of claims 1 to 5, wherein the viscosity number to DIN 53 728 of the cycloolefin copolymer is in the range from 5 to 5000 ml/g. Verfahren nach einem oder mehreren der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das Cycloolefincopolymere eine Viskositätszahl gemäß DIN 53 728 im Bereich von 5 bis 5 000 ml/g besitzt.
- 7Procédé selon la revendication 6, caractérisé en ce que l'indice de viscosité est compris dans la plage de 5 à 2000 ml/g. The process as claimed in claim 6, wherein the viscosity number is in the range from 5 to 2000 ml/g. Verfahren nach Anspruch 6, dadurch gekennzeichnet, dass die Viskositätszahl im Bereich von 5 bis 2000 ml/g liegt.
- 8Procédé selon la revendication 7, caractérisé en ce que l'indice de viscosité est compris dans la plage de 5 à 1000 ml/g. The process as claimed in claim 7, wherein the viscosity number is in the range from 5 to 1000 ml/g. Verfahren nach Anspruch 7, dadurch gekennzeichnet, dass die Viskositätszahl im Bereich von 5 bis 1000 ml/g liegt.
- 9Procédé selon l'une ou plusieurs des revendications 1 à 8, caractérisé en ce que la feuille thermoformable est une feuille monocouche ou une feuille multicouche et présente une épaisseur totale comprise dans la plage de 5 à 2000 µm. The process as claimed in one or more of claims 1 to 8, wherein the thermoformable foil is a monofoil or a multilayer foil and its total thickness is in the range from 5 to 2000 µm. Verfahren nach einem oder nach mehreren der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die thermoformbare Folie eine Monofolie oder eine Mehrschichtfolie ist und eine Gesamtdicke im Bereich von 5 bis 2000 µm aufweist.
- 10Procédé selon la revendication 9, caractérisé en ce que l'épaisseur totale de la feuille est comprise dans la plage de 50 à 500 µm. The process as claimed in claim 9, wherein the total thickness of the foil is in the range from 50 to 500 µm. Verfahren nach Anspruch 9, dadurch gekennzeichnet, dass die Gesamtdicke der Folie im Bereich von 50 bis 500 µm liegt.
- 11Procédé selon la revendication 10, caractérisé en ce que l'épaisseur totale de la feuille est comprise dans la plage de 200 à 400 µm. The process as claimed in claim 10, wherein the total thickness of the foil is in the range from 200 to 400 µm. Verfahren nach Anspruch 10, dadurch gekennzeichnet, dass die Gesamtdicke der Folie im Bereich von 200 bis 400 µm liegt.
- 12Procédé selon l'une ou plusieurs des revendications 1 à 11, caractérisé en ce que le copolymère cyclooléfinique contient de 0,1 % en poids à 100,0 % en poids, par rapport au poids total du copolymère cyclooléfinique, d'unités polymérisées qui dérivent d'au moins une oléfine polycyclique ayant les formules I, II, II', III, IV, V ou VI dans lesquelles R1, R2, R3, R4, R5, R6, R7 et R8 sont identiques ou différents et représentent chacun un atome d'hydrogène ou un radical hydrocarboné en C1-C20, ou forment un noyau saturé, insaturé ou aromatique, des radicaux identiques R1 à R8 pouvant dans les différentes formules I à VI avoir des significations différentes, n valant 0 à 5, et 0 à 99,9 % en poids, par rapport au poids total du copolymère cyclooléfinique, d'unités polymérisées qui dérivent d'une ou plusieurs oléfines acycliques de formule VII dans laquelle R9, R10, R11 et R12 sont identiques ou différents et représentent chacun un atome d'hydrogène, un radical hydrocarboné en C1-C20 à chaîne droite ou ramifiée, saturé ou insaturé. The process as claimed in one or more of claims 1 to 11, wherein the cycloolefin copolymer contains, based on the total weight of the cycloolefin copolymer, from 0.1% by weight to 100.0% by weight of polymerized units which derive from at least one polycyclic olefin of the formulae I, II, II', III, IV, V, or VI where R1, R2, R3, R4, R5, R6, R7, and R8 are identical or different, and are a hydrogen atom or a C1-C20 hydrocarbon radical, or form a saturated, unsaturated, or aromatic ring, where the same radicals R1 to R8 in the various formulae I to VI can have a different meaning, where n is from 0 to 5, and from 0 to 99.9% by weight, based on the total weight of the cycloolefin copolymer, of polymerized units which derive from one or more acyclic olefins of the formula VII where R9, R10, R11, and R12 are identical or different and are a hydrogen atom, a linear, branched, saturated, or unsaturated C1-C20 hydrocarbon radical. Verfahren nach einem oder nach mehreren der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass das Cycloolefincopolymere 0,1 Gew.-% bis 100,0 Gew.-%, bezogen auf die Gesamtmasse des Cycloolefincopolymeren, polymerisierte Einheiten enthält, welche sich ableiten von mindestens einem polycyclischen Olefin der Formeln I, II, II', III, IV, V oder VI worin R1, R2, R3, R4, R5, R6, R7 und R8 gleich oder verschieden sind und ein Wasserstoffatom oder einen C1-C20-Kohlenwasserstoffrest bedeuten oder einen gesättigten, ungesättigten oder aromatischen Ring bilden, wobei gleiche Reste R1 bis R8 in den verschiedenen Formeln I bis VI eine unterschiedliche Bedeutung haben können, worin n Werte von 0 bis 5 darstellt, und 0 bis 99,9 Gew.-%, bezogen auf die Gesamtmasse des Cycloolefincopolymers, polymerisierte Einheiten, welche sich ableiten von einem oder mehreren acyclischen Olefinen der Formel VII worin R9, R10, R11 und R12 gleich oder verschieden sind und ein Wasserstoffatom, einen linearen, verzweigten, gesättigten oder ungesättigten C1-C20-Kohlenwasserstoffrest bedeuten.
- 13Procédé selon la revendication 12, caractérisé en ce que le copolymère cyclooléfinique contient 0,1 % en poids à 99,9 % en poids d'unités polymérisées qui dérivent d'au moins une oléfine polycyclique ayant les formules I, II, II', III, IV, V ou VI, ainsi que 0,1 à 99,9 % en poids d'unités polymérisées qui dérivent d'une ou plusieurs oléfines acycliques de formule VII. The process as claimed in claim 12, wherein the cycloolefin copolymer contains from 0.1% by weight to 99.9% by weight of polymerized units which derive from at least one polycyclic olefin of the formulae I, II, II', III, IV, V, or VI, and also from 0.1 to 99.9% by weight of polymerized units which derive from one or more acyclic olefins of the formula VII. Verfahren nach Anspruch 12, dadurch gekennzeichnet, dass das Cycloolefincopolymere 0,1 Gew.-% bis 99,9 Gew.-% polymerisierte Einheiten enthält, welche sich ableiten von mindestens einem polycyclischen Olefin der Formeln I, II, II', III, IV, V oder VI, sowie 0,1 bis 99,9 Gew.-% polymerisierte Einheiten, welche sich ableiten von einem oder mehreren acyclischen Olefinen der Formel VII.
- 14Procédé selon la revendication 13, caractérisé en ce que R1, R2, R3, R4, R5, R6, R7 et R8 sont identiques ou différents et représentent chacun un atome d'hydrogène ou un radical alkyle en C1-C8 à chaîne droite ou ramifiée, un radical aryle en C6-C18, un radical alcénylaryle en C7-C20 ou un radical alcényle en C2-C20 cyclique ou acyclique, et en ce que R9, R10, R11 et R12 sont identiques ou différents et représentent chacun un atome d'hydrogène ou un radical alkyle en C1-C8 ou un radical aryle en C6-C18. The process as claimed in claim 13, wherein R1, R2, R3, R4, R5, R6, R7, and R8 are identical or different and are a hydrogen atom or a linear or branched C1-C8-alkyl radical, C6-C18-aryl radical, C7-C20-alkylenearyl radical, or a cyclic or acyclic C2-C20-alkenyl radical, and wherein R9, R10, R11, and R12 are identical or different and are a hydrogen atom or a C1-C8-alkyl radical or a C6-C18-aryl radical. Verfahren nach Anspruch 13, dadurch gekennzeichnet, dass R1, R2, R3, R4, R5, R6, R7 und R8 gleich oder verschieden sind und ein Wasserstoffatom oder einen linearen oder verzweigten C1-C8-Alkylrest, C6-C18-Arylrest, C7-C20Alkylenarylrest oder einen cyclischen oder acyclischen C2-C20-Alkenylrest bedeuten und dass R9, R10, R11 und R12 gleich oder verschieden sind und ein Wasserstoffatom oder einen C1-C8-Alkylrest oder einen C6-C18-Arylrest bedeuten.
- 15Procédé selon l'une ou plusieurs des revendications 12 à 14, caractérisé en ce que le copolymère cyclooléfinique contient une quantité de 0 à 45 % en poids, par rapport à son poids total, d'unités polymérisées qui dérivent d'une ou plusieurs oléfines monooléfiniques de formule VIII m étant un nombre de 2 à 10. The process as claimed in one or more of claims 12 to 14, wherein the cycloolefin copolymer contains an amount of from 0 to 45% by weight, based on its total weight, of polymerized units which derive from one or more monoolefinic olefins of the formula VIII where m is a number from 2 to 10. Verfahren nach einem oder mehreren der Ansprüche 12 bis 14, dadurch gekennzeichnet, dass das Cycloolefincopolymere eine Menge von 0 bis 45 Gew.%, bezogen auf seine Gesamtmasse, polymerisierte Einheiten enthält, die sich von einem oder mehreren monoolefinischen Olefinen der Formel VIII ableiten, worin m eine Zahl von 2 bis 10 ist.
- 16Procédé selon l'une ou plusieurs des revendications 1 à 5, caractérisé en ce que le copolymère cyclooléfinique a une température de transition vitreuse Tg comprise dans la plage de 85 à 200°C, et qu'il contient éventuellement des mélanges de copolymères cyclooléfiniques ayant différentes Tg. The process as claimed in one or more of claims 1 to 15, wherein the glass transition temperature Tg of the cycloolefin copolymer is in the range from 85 to 200°C, and wherein the material comprises, if appropriate, the mixture of cycloolefin copolymers with different Tg. Verfahren nach einem oder nach mehreren der Ansprüche 1 bis 15, dadurch gekennzeichnet, dass das Cycloolefincopolymere eine Glastemperatur Tg im Bereich von 85 bis 200 °C hat, und dass sie gegebenenfalls Mischungen von Cycloolefincopolymeren mit unterschiedlicher Tg enthält.
- 17Procédé selon la revendication 16, caractérisé en ce que le copolymère cyclooléfinique a une température de transition vitreuse Tg comprise dans la plage de 120 à 190°C. The process as claimed in claim 16, wherein the glass transition temperature Tg of the cycloolefin copolymer is in the range from 120 to 190°C. Verfahren nach Anspruch 16, dadurch gekennzeichnet, dass das Cycloolefincopolymere eine Glastemperatur Tg im Bereich von 120 bis 190 °C hat.
- 18Procédé selon l'une ou plusieurs des revendications 1 à 17, caractérisé en ce que la feuille thermoformable contient, en tant qu'autres polyoléfines, des polyéthylènes haute densité ou basse densité (PEHD, PEBD, PEBDL), un copolymère éthylène-acétate de vinyle, un ionomère, du polypropylène, un copolymère d'oléfine, un plastomère ou des mélanges de ces derniers. The process as claimed in one or more of claims 1 to 17, wherein the thermoformable foil comprises, as other polyolefins, high- or low-density polyethylenes (HDPE, LDPE, LLDPE), ethylene-vinyl acetate copolymer, ionomer, polypropylene, olefin copolymers, plastomers, or a mixture thereof. Verfahren nach einem oder nach mehreren der Ansprüche 1 bis 17, dadurch gekennzeichnet, dass die thermoformbare Folie als weitere Polyolefine Polyethylene hoher oder niederer Dichte (HDPE, LDPE, LLDPE), Ethylen-Vinylacetat-Copolymer, lonomer, Polypropylen, Olefin-Copolymere, Plastomere oder Mischungen daraus enthält.
- 19Procédé selon l'une ou plusieurs des revendications 1 à 18, caractérisé en ce que la feuille thermoformable contient jusqu'à 40 % en poids de découpes de feuille, obtenues lors de la fabrication et sous forme d'un regranulat. The process as claimed in one or more of claims 1 to 18, wherein the thermoformable foil comprises, in the form of regrind, up to 40% by weight of cut foil arising during the production process. Verfahren nach einem oder nach mehreren der Ansprüche 1 bis 18, dadurch gekennzeichnet, dass die thermoformbare Folie bis zu 40 Gew.-% aus bei der Herstellung anfallendem Folienverschnitt in Form von Regranulat enthält.
- 20A packaging, produced by a process as claimed in one or more of claims 1 to 19, which, after thermoforming of the thermoformable foil, has a heat-distortion resistance value in the range from 60 to 200°C. Emballage fabriqué par un procédé selon l'une ou plusieurs des revendications 1 à 19, caractérisé en ce que, après le thermoformage de la feuille thermoformée, il présente une stabilité dimensionnelle à chaud comprise dans la plage de 60 à 200°C. Verpackung, hergestellt nach einem Verfahren nach einem oder nach mehreren der Ansprüche 1 bis 19, dadurch gekennzeichnet dass sie nach dem Thermoformen der thermoformbaren Folie eine Wärmeformbeständigkeit im Bereich von 60 bis 200 °C besitzt.
- 21Emballage selon la revendication 20, caractérisé en ce qu'il présente une stabilité dimensionnelle à chaud comprise dans la plage de 80 à 200°C. The packaging as claimed in claim 20, which has a heat-distortion resistance value in the range from 80 to 200°C. Verpackung nach Anspruch 20, dadurch gekennzeichnet, dass die eine Wärmeformbeständigkeit im Bereich von 80 bis 200 °C besitzt.
- 22Emballage selon la revendication 21, caractérisé en ce qu'il présente une stabilité dimensionnelle à chaud comprise dans la plage de 100 à 180°C. The packaging as claimed in claim 21, which has a heat-distortion resistance value in the range from 100 to 180°C. Verpackung nach Anspruch 21, dadurch gekennzeichnet, dass die eine Wärmeformbeständigkeit im Bereich von 100 bis 180 °C besitzt.
- 23Emballage selon l'une ou plusieurs des revendications 20 à 22, caractérisé en ce qu'il s'agit d'un emballage à alvéoles thermoformées de type blister. The packaging as claimed in one or more of claims 20 to 22, which is a blister pack. Verpackung nach einem oder mehreren der Ansprüche 20 bis 22, dadurch gekennzeichnet, dass sie eine Blisterverpackung ist.
Independent claims23
38 paragraphs, as filed
The invention relates to a method for producing a packaging from a thermoformable film made of thermoplastic polyolefins by thermoforming, which after thermoforming has a high heat resistance and a high water vapor barrier.
From JP 2000 202951 A2, thermoformable films are known with a multilayer structure made of a mostly halogen-containing polymer such as polyvinyl chloride (PVC) as the carrier film and a mixture of an amorphous cycloolefin copolymer (COC) with a partially crystalline high-density polyolefin such as high-density polyethylene (HDPE), low-density polyethylene ( LDPE) or linear low density polyethylene (LLDPE) as cover layers. A disadvantage of this, however, is the halogen content in the carrier film and the usually unsatisfactory heat resistance, which is not sufficient to subject the thermoformed film to sterilization with the help of steam without changing the shape.
DE-A 100 09 646 discloses a polymer mixture containing amorphous COC as such and films or blister packs which are produced from the polymer mixture. Although the document describes that the mixture described is suitable for influencing the relaxation behavior, the shrinkage behavior or the heat resistance, it does not make any statement about the nature and the extent of the heat resistance achieved.
The object of the present invention was to find a new method for producing packaging, in which a film is used which has very good thermoformability. The packaging produced in this way by thermoforming is said to have an improved heat resistance, in the best case it should have such a high heat resistance that it can be steam-sterilized, ie that it does not change its geometric shape when exposed to a temperature in the range of up to 121 ° C for a period of at least 20 min. In addition to this property, the packaging should also offer a reliably good barrier against the passage of water vapor and be able to be produced on an industrial scale under economic conditions.
This object is achieved by a method of the type mentioned at the beginning, the characteristic feature of which can be seen in the fact that the thermoformable film has an amount in the range from 5 to 100% by weight, preferably from 20 to 90% by weight, particularly preferably from 25 up to 80% by weight, COC with a glass transition temperature T<sub>G</sub> in the range from 65 to 200 ° C, measured in accordance with DIN EN ISO 11357-1 with the aid of a DSC at a heating rate of 10 K / min, and preferably by thermoforming at a temperature in the range from 70 to 170 ° C from 80 to 160 ° C, produced packaging has a heat resistance in the range of 60 to 200 ° C, preferably from 80 to 200 ° C, particularly preferably from 110 to 180 ° C.
The thermoforming by the process according to the invention is expediently carried out over a period of 0.5 to 10 s, preferably 1 to 7 s, at the corresponding temperature.
The average molecular weight of the cycloolefin copolymers can be controlled during their production by metering in hydrogen, varying the catalyst concentration or varying the temperature. The thermoformable film suitable for the process according to the invention contains cycloolefin copolymers with an average molecular weight M.<sub>w</sub> in the range from 500 to 2,000,000 g / mol, preferably from 1,000 to 1,000,000 g / mol, in particular from 3,000 to 500,000 g / mol. These molecular weights, determined with the aid of gel permeation chromatography (GPC) in chloroform at 35 ° C. using an RI detector, are relative and relate to calibration with narrowly distributed polystyrene standards.
According to DIN 53 728, the cycloolefin copolymers described have viscosity numbers VZ in the range from 5 to 5000 ml / g, preferably from 5 to 2000 ml / g and in particular from 5 to 1000 ml / g.
The thermoformable film generally has a thickness in the range from 5 to 1000 μm, preferably from 50 to 600 μm, particularly preferably from 100 to 500 μm. It can be in the form of a monofilm or a multilayer film with two, three or even more layers, but the layer thickness of the layer containing COC should be at least 10% of the total thickness of the multilayer film.
The COC contained in the thermoformable film generally contains 0.1 to 100.0% by weight, preferably 0.1 to 99.9% by weight, based on the total mass of the cycloolefin copolymer, of polymerized units which are derived from at least a polycyclic olefin of the following formulas I, II, II ', III, IV, V or VI<chemistry id="chem0001" num="0001"><img file="EP1539867B1_D0001.tif" /></chemistry><chemistry id="chem0002" num="0002"><img file="EP1539867B1_D0002.tif" /></chemistry><chemistry id="chem0003" num="0003"><img file="EP1539867B1_D0003.tif" /></chemistry><chemistry id="chem0004" num="0004"><img file="EP1539867B1_D0004.tif" /></chemistry><chemistry id="chem0005" num="0005"><img file="EP1539867B1_D0005.tif" /></chemistry>where R<sup>1</sup>, R<sup>2</sup>, R<sup>3</sup>, R<sup>4</sup>, R<sup>5</sup>, R<sup>6</sup>, R<sup>7</sup> and R<sup>8</sup> are identical or different and represent a hydrogen atom or a C<sub>1</sub>-C<sub>20</sub>-Hydrocarbon residue, such as a linear or branched C<sub>1</sub>-C<sub>8</sub>-Alkyl radical, C<sub>6</sub>-C<sub>18</sub>Aryl group, C<sub>7</sub>-C<sub>20</sub>Alkylene aryl radical, a cyclic or acyclic C<sub>2</sub>-C<sub>20</sub>-Alkenyl radical, or form a saturated, unsaturated or aromatic ring, the same radicals R<sup>1</sup> to R<sup>8</sup> can have a different meaning in the different formulas I to VI, in which n can take on values from 0 to 5, and 0 to 99.9% by weight, preferably 0.1 to 99.9% by weight, based on the total mass of the cycloolefin copolymer, of polymerized units which are derived from one or more acyclic olefins of the formula VII<chemistry id="chem0006" num="0006"><img file="EP1539867B1_D0006.tif" /></chemistry>where R<sup>9</sup>, R<sup>10</sup>, R<sup>11</sup> and R<sup>12</sup> are identical or different and represent a hydrogen atom, a linear, branched, saturated or unsaturated C<sub>1</sub>-C<sub>20-</sub>Hydrocarbon residue like a C<sub>1</sub>-C<sub>8</sub>Alkyl radical or a C<sub>6</sub>-C<sub>18</sub>-Aryl residue mean.
In addition, the cycloolefin copolymers used can contain 0 to 45% by weight, based on the total mass of the cycloolefin copolymer, of polymerized units which are derived from one or more monocyclic olefins of the formula VIII<chemistry id="chem0007" num="0007"><img file="EP1539867B1_D0007.tif" /></chemistry>where m is a number from 2 to 10.
The cyclic olefins also include derivatives of these cyclic olefins with polar groups such as halogen, hydroxyl, ester, alkoxy, carboxy, cyano, amido, imido or silyl groups.
For the purposes of the invention, preference is given to COCs which contain polymerized units which are derived from polycyclic olefins of the formulas I or III, and polymerized units which are derived from acyclic olefins of the formula VII, in particular olefins with a norbornene basic structure such as norbornene and tetracyclododecene and optionally vinylnorbornene or norbornadiene.
Also preferred are cycloolefin copolymers with polymerized units derived from acyclic olefins with terminal double bonds, such as α-olefins with 2 to 20 C atoms, in particular ethylene or propylene, for example ethylene / norbornene and ethylene / tetracyclododecene copolymers.
Preferred terpolymers are ethylene / norbornene / vinyl norbornene, ethylene / norbornene / norbornadiene, ethylene / tetracyclododecene / vinylnorbornene, ethylene / tetracyclododecene / vinyltetracyclododecene or ethylene / norbornene / dicyclopentadiene terpolymers.
A copolymer of ethylene and norbornene can be used very particularly advantageously as COC.
The proportion of the polymerized units derived from a polyene, preferably vinyl norbornene or norbornadiene, is generally 0.1 to 50.0 mol%, preferably 0.1 to 20.0 mol%, the proportion of the acyclic Monoolefins of formula VII is generally 0 to 99.9 mol%, preferably 5.0 to 80.0 mol%, based on the total composition of the cycloolefin polymer. In the terpolymers described, the proportion of the polycyclic monoolefin is 0.1 to 99.9 mol%, preferably 3.0 to 75.0 mol%, based on the total composition of the COC.
The thermoformable film can be transparent or can also be produced by adding polymers which do not form a homogeneous mixture with the COC or pigments as an opaque film, or with soluble dyes as a colored film.
The use of the COC not only improves the sealability and the slippage of the film, but also increases the color adhesion on the packaging produced according to the invention when it is labeled or printed.
Mixtures of the polymers mentioned with typical plastic additives such as antioxidants, metal deactivators, light stabilizers, plasticizers, lubricants, processing aids, antistatic agents, optical brighteners, bio-stabilizers, fire retardants, as well as fillers and reinforcing agents (see also Gächter, Müller, Plastics Additive Handbook, 4<sup>th</sup> edition, 1993, Munich, Hanser) are also suitable.
The cycloolefin copolymers can be prepared in a known manner at temperatures from -78 to 200 ° C. and a pressure of 0.01 to 200 bar, in the presence of one or more catalyst systems which contain at least one transition metal compound and optionally a cocatalyst and optionally a support material. Metallocenes, in particular stereorigid metallocenes, are suitable as transition metal compounds. Examples of catalyst systems which are suitable for the production of the COCs are described, for example, in US Pat. No. 5,008,356, EP-A-0 407 870, EP-A-0 485 893 and EP-A-0 503 422, to which reference is made becomes.
The cycloolefin copolymers can also be prepared in other ways, briefly outlined below: Catalyst systems based on mixed catalysts composed of titanium salts and aluminum organyls are described in DD-A-109 224 and DD-A-237 070. EP-A-0 156 464 describes the production with vanadium-based catalysts.
The cycloolefin copolymers can also be obtained by ring-opening polymerization of at least one of the monomers having the formulas I to VI and subsequent hydrogenation of the products obtained.
The polymerization can also be carried out in several stages, block copolymers also being able to form, see DE-A-42 05 416.
COC is understood to mean those polyolefins which, despite an irregular arrangement of the molecular chains, are solids at room temperature. The heat resistance of the cycloolefin copolymers can be adjusted over a wide range. The glass transition temperature T for cycloolefin copolymers can be used as a guide for the heat resistance, as can be determined on injection molded articles according to ISO 75 Part 1 and Part 2<sub>G</sub> use, measured according to DIN EN ISO 11357-1 using a DSC at a heating rate of 10 K / min. The cycloolefin copolymers described have glass transition temperatures in the range from 65 to 200 ° C., preferably from 85 to 200 ° C., in particular from 120 to 190 ° C. The film according to the invention may also contain mixtures of different COCs with different glass transition temperatures.
The density of the cycloolefin copolymers used in the present invention is usually in the range of 0.9 to 1.1 g / cm<sup>3</sup>, preferably 0.9 to 1.05 g / cm<sup>3</sup>.
Suitable polyolefins which can be used in addition to the COC in the film according to the invention are high or low density polyethylenes (HDPE, LDPE, LLDPE), ethylene-vinyl acetate copolymer, ionomer, polypropylene, olefin copolymers, plastomers or mixtures thereof .
There are embodiments of the method according to the invention in which the thermoformable film is combined with further films to form a multilayer composite. The composite can be produced by laminating previously individually produced films, by coextrusion or by extrusion coating or extrusion lamination. In addition, further layers that improve adhesion can be provided between the individual layers. The substances used for this can contain at least one or more polymers and are generally known as such.
It was particularly surprising that the film waste resulting from the manufacturing process of the thermoformable film, with all of its components, can be reused as regranulate and thus be recycled without adversely affecting the thermoformability of the film and the thermoformability of the packaging produced therefrom. As a result, the economy of the method according to the invention can be significantly improved and an environmental impact can be reduced.
The adhesion-improving layer can advantageously be applied in the melt or as a solution, suspension or solvent-containing adhesive.
Thermoformable films for the process according to the invention can be produced, for example, by a known process for producing a plastic monolayer or multilayer film, in which the polymers for the film and / or the polymer mixtures are compressed in an extruder, heated and then the melt or the melts are passed through a flat die are extruded and the film thus obtained is drawn off on one or more rollers or on steel belts. Any additives that are added can already be contained in the polymer or in the polymer mixture or they are added via masterbatch technology.
The melt (s) can also be extruded through an annular die, the film obtained in this way being processed into a film on a blown film line and laid flat on rollers or belts.
If necessary, one or both surface (s) of the film can be corona or flame treated by known methods. By treating the surface, it is prepared for subsequent labeling or printing using generally known methods.
It was particularly surprising that the method according to the invention, when using the thermoformable film, which has been described in detail above, is distinguished by particularly good reproduction of details in thermoforming, and that, above all, the wall thickness in thermoforming is very uniform. It was also surprising that the sealing behavior of two films produced in this way is very good with respect to one another, ie dense seal composites could be produced at a low sealing initiation temperature, but these could then be released again by hand, or mechanically insoluble connections could be produced at an increased sealing temperature. Another advantage of the thermoformable film is its excellent punching behavior, which is expressed by the fact that it does not form any sharp edges or corners when punching out.
Embodiments
The following starting materials were used in the examples below:<ol id="ol0001" ol-style=""><li>1. Ethylene-norbornene copolymer with a glass transition temperature (T<sub>G</sub>) of 80 ° C and a viscosity number (VZ) of 80 ml / g (trade name ® Topas 8007, Ticona GmbH, Frankfurt a. M.).</li><li>2nd Ethylene-norbornene copolymer with a T<sub>G</sub> of 140 ° C and a VZ of 60 ml / g (trade name ® Topas 6013, Ticona GmbH, Frankfurt am Main).</li><li>3rd Polyethylene (trade name ® Lupolex 18QFA, Basell GmbH)</li><li>4th Polyethylene (trade name ® Luflexen 18PFAX, Basell GmbH)</li><li>5. Polypropylene (trade name HB600TF, Borealis)</li></ol>
From the materials mentioned, films were produced by extrusion in accordance with the examples given in Table 1 and stretched by 100% at the temperatures indicated. The change in length of these stretched films was then determined as a function of the temperature over 20 min. The value for the shrinkage results from the difference in length before and after heat storage divided by the initial length. The shrinkage is a measure of the heat resistance of the thermoformed foils such as deep-drawn blister packs.<tables id="tabl0001" num="0001"><table frame="all"><title><b><u style="single">Table 1</u></b></title><tgroup cols="6" colsep="1" rowsep="1"><colspec colnum="1" colname="col1" colwidth="18mm" colsep="1" /><colspec colnum="2" colname="col2" colwidth="21mm" colsep="1" /><colspec colnum="3" colname="col3" colwidth="26mm" colsep="1" /><colspec colnum="4" colname="col4" colwidth="39mm" colsep="1" /><colspec colnum="5" colname="col5" colwidth="45mm" colsep="1" /><colspec colnum="6" colname="col6" colwidth="58mm" colsep="1" /><thead><row><entry namest="col1" nameend="col1" align="center" valign="top"><b>example</b></entry><entry namest="col2" nameend="col2" align="center" valign="top"><b>COC</b></entry><entry namest="col3" nameend="col3" align="center" valign="top"><b>Polyolefin</b></entry><entry namest="col4" nameend="col4" align="center" valign="top"><b>Stretching temperature [° C]</b></entry><entry namest="col5" nameend="col5" align="center" valign="top"><b>Shrink temperature * [° C]</b></entry><entry namest="col6" nameend="col6" align="center" valign="top">Water vapor permeability [g / m<sup>2</sup>· D]</entry></row></thead><tbody><row><entry namest="col1" nameend="col1" align="left" valign="top"><b>1a</b></entry><entry namest="col2" nameend="col2" align="center" valign="top"><b>100% 8007</b></entry><entry namest="col3" nameend="col3" align="center" valign="top"><b>-</b></entry><entry namest="col4" nameend="col4" align="center" valign="top"><b>90</b></entry><entry namest="col5" nameend="col5" align="center" valign="top"><b>80</b></entry><entry namest="col6" nameend="col6" align="center" valign="top"><b>1</b></entry></row><row><entry namest="col1" nameend="col1" align="left" valign="top"><b>1b</b></entry><entry namest="col2" nameend="col2" align="center" valign="top"><b>80% 8007</b></entry><entry namest="col3" nameend="col3" align="center" valign="top"><b>20% 18QFA</b></entry><entry namest="col4" nameend="col4" align="center" valign="top"><b>90</b></entry><entry namest="col5" nameend="col5" align="center" valign="top"><b>75</b></entry><entry namest="col6" nameend="col6" align="center" valign="top"><b>1,2</b></entry></row><row><entry namest="col1" nameend="col1" align="left" valign="top"><b>1c</b></entry><entry namest="col2" nameend="col2" align="center" valign="top"><b>60% 8007</b></entry><entry namest="col3" nameend="col3" align="center" valign="top"><b>40% 18QPA</b></entry><entry namest="col4" nameend="col4" align="center" valign="top"><b>90</b></entry><entry namest="col5" nameend="col5" align="center" valign="top"><b>70</b></entry><entry namest="col6" nameend="col6" align="center" valign="top"><b>1,5</b></entry></row><row><entry namest="col1" nameend="col1" align="left" valign="top"><b>1d</b></entry><entry namest="col2" nameend="col2" align="center" valign="top"><b>20% 8007</b></entry><entry namest="col3" nameend="col3" align="center" valign="top"><b>80% 18QFA</b></entry><entry namest="col4" nameend="col4" align="center" valign="top"><b>90</b></entry><entry namest="col5" nameend="col5" align="center" valign="top"><b>30</b></entry><entry namest="col6" nameend="col6" align="center" valign="top"><b>3,8</b></entry></row><row><entry namest="col1" nameend="col1" align="left" valign="top"><b>2a</b></entry><entry namest="col2" nameend="col2" align="center" valign="top"><b>100% 6013</b></entry><entry namest="col3" nameend="col3" align="center" valign="top"><b>-</b></entry><entry namest="col4" nameend="col4" align="center" valign="top"><b>150</b></entry><entry namest="col5" nameend="col5" align="center" valign="top"><b>142</b></entry><entry namest="col6" nameend="col6" align="center" valign="top"><b>1,3</b></entry></row><row><entry namest="col1" nameend="col1" align="left" valign="top"><b>2 B</b></entry><entry namest="col2" nameend="col2" align="center" valign="top"><b>80% 6013</b></entry><entry namest="col3" nameend="col3" align="center" valign="top"><b>20% 18PFAX</b></entry><entry namest="col4" nameend="col4" align="center" valign="top"><b>150</b></entry><entry namest="col5" nameend="col5" align="center" valign="top"><b>144</b></entry><entry namest="col6" nameend="col6" align="center" valign="top"><b>1,5</b></entry></row><row><entry namest="col1" nameend="col1" align="left" valign="top"><b>2c</b></entry><entry namest="col2" nameend="col2" align="center" valign="top"><b>60% 6013</b></entry><entry namest="col3" nameend="col3" align="center" valign="top"><b>40% 18PFAX</b></entry><entry namest="col4" nameend="col4" align="center" valign="top"><b>150</b></entry><entry namest="col5" nameend="col5" align="center" valign="top"><b>141</b></entry><entry namest="col6" nameend="col6" align="center" valign="top"><b>1,8</b></entry></row><row><entry namest="col1" nameend="col1" align="left" valign="top"><b>2d</b></entry><entry namest="col2" nameend="col2" align="center" valign="top"><b>40% 6013</b></entry><entry namest="col3" nameend="col3" align="center" valign="top"><b>60% 18PFAX</b></entry><entry namest="col4" nameend="col4" align="center" valign="top"><b>150</b></entry><entry namest="col5" nameend="col5" align="center" valign="top"><b>144</b></entry><entry namest="col6" nameend="col6" align="center" valign="top"><b>2,9</b></entry></row><row><entry namest="col1" nameend="col1" align="left" valign="top"><b>2e</b></entry><entry namest="col2" nameend="col2" align="center" valign="top"><b>20% 6013</b></entry><entry namest="col3" nameend="col3" align="center" valign="top"><b>80% 18PFAX</b></entry><entry namest="col4" nameend="col4" align="center" valign="top"><b>150</b></entry><entry namest="col5" nameend="col5" align="center" valign="top"><b>143</b></entry><entry namest="col6" nameend="col6" align="center" valign="top"><b>4,2</b></entry></row><row><entry namest="col1" nameend="col1" align="left" valign="top"><b>V1</b></entry><entry namest="col2" nameend="col2" align="center" valign="top"><b>-</b></entry><entry namest="col3" nameend="col3" align="center" valign="top"><b>100% 18QFA</b></entry><entry namest="col4" nameend="col4" align="center" valign="top"><b>90</b></entry><entry namest="col5" nameend="col5" align="center" valign="top"><b>< 30</b></entry><entry namest="col6" nameend="col6" align="center" valign="top"><b>4,8</b></entry></row><row><entry namest="col1" nameend="col1" align="left" valign="top"><b>V2</b></entry><entry namest="col2" nameend="col2" align="center" valign="top"><b>-</b></entry><entry namest="col3" nameend="col3" align="center" valign="top"><b>100% 18PFAX</b></entry><entry namest="col4" nameend="col4" align="center" valign="top"><b>150</b></entry><entry namest="col5" nameend="col5" align="center" valign="top"><b>80</b></entry><entry namest="col6" nameend="col6" align="center" valign="top"><b>4,7</b></entry></row><row><entry namest="col1" nameend="col1" align="left" valign="top"><b>V3</b></entry><entry namest="col2" nameend="col2" align="center" valign="top"><b>-</b></entry><entry namest="col3" nameend="col3" align="center" valign="top"><b>100% PP</b></entry><entry namest="col4" nameend="col4" align="center" valign="top"><b>70</b></entry><entry namest="col5" nameend="col5" align="center" valign="top"><b>65</b></entry><entry namest="col6" nameend="col6" align="center" valign="top"><b>2,5</b></entry></row></tbody></tgroup><tgroup cols="6" rowsep="0"><colspec colnum="1" colname="col1" colwidth="18mm" /><colspec colnum="2" colname="col2" colwidth="21mm" /><colspec colnum="3" colname="col3" colwidth="26mm" /><colspec colnum="4" colname="col4" colwidth="39mm" /><colspec colnum="5" colname="col5" colwidth="45mm" /><colspec colnum="6" colname="col6" colwidth="58mm" /><tbody><row><entry namest="col1" nameend="col6" align="justify" valign="top">* The shrink temperature is the temperature at which the shrinkage is exactly 5% after 20 minutes. ** The water vapor permeability was measured according to ASTM F 372 at a temperature of 38 ° C and a relative humidity of 90% standardized on a film of 100 µm.</entry></row></tbody></tgroup></table></tables>
The values in Table 1 clearly show the increase in temperature stability of all polyolefin films by blending with COC. For example, thermoformed blisters made of foils, the COC with a T<sub>G</sub> of 140 ° C, can be sterilized with steam at a temperature of 121 ° C without any shrinkage or change in shape.
25 sheets
Sheet 1 Sheet 2 Sheet 3 Sheet 4 Sheet 5 Sheet 6 Sheet 7 Sheet 8 Sheet 9 Sheet 10 Sheet 11 Sheet 12 Sheet 13 Sheet 14 Sheet 15 Sheet 16 Sheet 17 Sheet 18 Sheet 19 Sheet 20 Sheet 21 Sheet 22 Sheet 23 Sheet 24 Sheet 25
Every citation, both ways
| Document | Relation | Office |
|---|---|---|
| EP0384694A | Cites | European Patent Office (EPO) |
| EP1323524A | Cites | European Patent Office (EPO) |
| WO0164786A | Cites | World Intellectual Property Organization (WIPO) |
| US2002012781A1 | Cites | United States of America |
13 members in 8 offices
Priority claims9
| Document | Office | Kind | Date |
|---|---|---|---|
| 10242730 | Germany | A | |
| 10242730 | Germany | A | |
| 10242730 | Germany | – | |
| 0310077 | European Patent Office (EPO) | W | |
| 0310077 | European Patent Office (EPO) | W | |
| 10242730 | – | – | – |
| DE2002142730 | – | – | – |
| EP2003010077 | – | – | – |
| WO2003EP10077 | – | – | – |
Members13
| Document | Office | Kind | |
|---|---|---|---|
| DE10242730A1 | Germany | A1 | |
| CA2498340A1 | Canada | A1 | |
| WO2004026946A1 | World Intellectual Property Organization (WIPO) | A1 | |
| AU2003266375A1 | Australia | A1 | |
| EP1539867A1 | European Patent Office (EPO) | A1 | |
| JP2005538236A | Japan | A | |
| US2006020084A1 | United States of America | A1 | |
| EP1539867B1This record | European Patent Office (EPO) | B1 | |
| AT340212T | Austria | T | |
| ATE340212T1 | Austria | T1 | |
| DE50305134D1 | Germany | D1 | |
| US7829633B2 | United States of America | B2 | |
| CA2498340C | Canada | C |
57 legal events, as 6 offices reported them to INPADOC
Over the term
Point at a mark for the eventEvents
| Event | Code | Office | |
|---|---|---|---|
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Patent expired after termination of 20 yearsExpiredPE20 | PE20 | GB | |
| Expiry of rightR071 | R071 | DE | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| Fee paymentPLFP | PLFP | FR | |
| Fee paymentPLFP | PLFP | FR | |
| Fee paymentPLFP | PLFP | FR | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Patent ceasedCeasedPL | PL | CH | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Be: lapsedLapsedBERE | BERE | EP | |
| No opposition filedOpposition26N | 26N | EP | |
| No opposition filed within time limitOppositionORIGINAL CODE: 0009261PLBE | PLBE | EP | |
| Information on the status of an ep patent application or granted ep patentGrantedSTATUS: NO OPPOSITION FILED WITHIN TIME LIMITSTAA | STAA | EP | |
| European patents designating ireland treated as always having been voidFD4D | FD4D | IE | |
| Fr: translation filedET | ET | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents actLapsedNLV1 | NLV1 | EP | |
| Gb: translation of ep patent filed (gb section 77(6)(a)/1977)GBT | GBT | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Corresponds to:REF | REF | EP | |
| European patents granted designating irelandGrantedLANGUAGE OF EP DOCUMENT: GERMANFG4D | FG4D | IE | |
| European patent takes effect as a national patent in ch/liEP | EP | CH | |
| Designated contracting statesAK | AK | EP | |
| European patent grantedGrantedNOT ENGLISHFG4D | FG4D | GB | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| (expected) grantORIGINAL CODE: 0009210GRAA | GRAA | EP | |
| Title (correction)METHOD FOR THE PRODUCTION OF A PACKAGING MADE OF THERMOFORMABLE FILM HAVING HIGH THERMAL STABILITY AND WATER- VAPOUR BARRIERRTI1 | RTI1 | EP | |
| Grant fee paidORIGINAL CODE: EPIDOSNIGR3GRAS | GRAS | EP | |
| Party data changed (applicant data changed or rights of an application transferred)RAP1 | RAP1 | EP | |
| Despatch of communication of intention to grant a patentORIGINAL CODE: EPIDOSNIGR1GRAP | GRAP | EP | |
| Request for extension of the european patent (deleted)DAX | DAX | EP | |
| Request for examination filed17P | 17P | EP | |
| Designated contracting statesAK | AK | EP | |
| Request for extension of the european patentAX | AX | EP | |
| Public reference made under article 153(3) epc to a published international application that has entered the european phaseORIGINAL CODE: 0009012PUAI | PUAI | EP |
Numbers
- Publication
- 1539867
- Publication, DOCDB
- 1539867
- Publication, EPODOC
- EP1539867
- Application
- 3797293
- Application, DOCDB
- 03797293
- Application, EPODOC
- EP20030797293
Titles3
- German
- VERFAHREN ZUM HERSTELLEN EINER VERPACKUNG AUS THERMOFORMBARER FOLIE MIT HOHER WÄRMEFORMBESTÄNDIGKEIT UND WASSERDAMPFBARRIERE
- English
- METHOD FOR THE PRODUCTION OF A PACKAGING MADE OF THERMOFORMABLE FILM HAVING HIGH THERMAL STABILITY AND WATER- VAPOUR BARRIER
- French
- PROCEDE DE REALISATION A PARTIR D'UN FILM THERMOFORMABLE D'UN EMBALLAGE PRESENTANT UNE RESISTANCE ELEVEE A LA DEFORMATION THERMIQUE ET UNE GRANDE IMPERMEABILITE A LA VAPEUR D'EAU
Classification
- CPC, 15
- B32B27/32
- C08J5/18
- C08L23/06
- C08L23/0823
- Y10T428/31909
- Y10T428/31931
- B32B2307/308
- B32B27/08
- B32B2553/00
- B32B2331/04
- B32B2323/10
- B32B7/12
- B32B2323/043
- B32B2323/046
- B32B2307/7246
- IPC, 7
- C08J5 18
- B32B27 32
- B65D65 40
- C08L23 02
- C08L23 06
- C08L23 08
- C08L45 00
Designated states27
- Contracting states, 27
- Austria
- Belgium
- Bulgaria
- Switzerland
- Cyprus
- Czechia
- Germany
- Denmark
- Estonia
- Spain
- Finland
- France
- United Kingdom
- Greece
- Hungary
- Ireland
- Italy
- Liechtenstein
- Luxembourg
- Monaco
- Netherlands (Kingdom of the)
- Portugal
- Romania
- Sweden
and 3 moreShow fewer
- Slovenia
- Slovakia
- Türkiye
