DE2703475A1 - PACKAGING FILM - Google Patents
PACKAGING FILMInfo
- Publication number
- DE2703475A1 DE2703475A1 DE19772703475 DE2703475A DE2703475A1 DE 2703475 A1 DE2703475 A1 DE 2703475A1 DE 19772703475 DE19772703475 DE 19772703475 DE 2703475 A DE2703475 A DE 2703475A DE 2703475 A1 DE2703475 A1 DE 2703475A1
- Authority
- DE
- Germany
- Prior art keywords
- gas
- packaging film
- packaging
- coating
- layer
- 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
- 239000012785 packaging film Substances 0.000 title claims description 13
- 229920006280 packaging film Polymers 0.000 title claims description 13
- 230000035699 permeability Effects 0.000 claims description 12
- 239000011248 coating agent Substances 0.000 claims description 11
- 238000000576 coating method Methods 0.000 claims description 11
- 239000004922 lacquer Substances 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 238000001465 metallisation Methods 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 claims description 2
- 239000010410 layer Substances 0.000 claims 3
- 239000011241 protective layer Substances 0.000 claims 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 8
- 235000013351 cheese Nutrition 0.000 description 7
- 239000005022 packaging material Substances 0.000 description 7
- 229920000573 polyethylene Polymers 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- 238000004806 packaging method and process Methods 0.000 description 6
- 229910002092 carbon dioxide Inorganic materials 0.000 description 4
- 239000001569 carbon dioxide Substances 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000011888 foil Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 230000005070 ripening Effects 0.000 description 3
- 229920000298 Cellophane Polymers 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 239000000020 Nitrocellulose Substances 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 238000005269 aluminizing Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- 238000012858 packaging process Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000003678 scratch resistant 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
- 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
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- 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
- B32B7/02—Physical, chemical or physicochemical 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
- B32B2255/00—Coating on the layer surface
- B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/20—Inorganic coating
- B32B2255/205—Metallic coating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/724—Permeability to gases, adsorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/724—Permeability to gases, adsorption
- B32B2307/7242—Non-permeable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2323/00—Polyalkenes
- B32B2323/04—Polyethylene
-
- 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
- B32B2323/00—Polyalkenes
- B32B2323/10—Polypropylene
-
- 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
Landscapes
- Laminated Bodies (AREA)
- Wrappers (AREA)
- Packages (AREA)
Description
Die Erfindung bezieht sich auf eine Verpackungsfolie, deren Gasdurchlässigkeit ihrem jeweiligen besonderen Gebrauch anpassbar ist. The invention relates to a packaging film, the gas permeability of which can be adapted to its particular use.
Beim Lagern und während der Herstellungs- (Reife-) Periode mancher Nahrungsmittel, zum Beispiel Käse, ist es wichtig, das Produkt vor Sauerstoff zu schützen, um die Entwicklung von Mikroorganismen und die Bildung von Schimmel oder Moder auf ihrer Oberfläche zu verhindern. Das Packmaterial für Käse muß daher eine bestimmte Menge an Kohlendioxyd durchlassen, um zu verhindern, daß die dicht versiegelte Verpackung anschwillt und reißt. Kohlendioxyd entwickelt sich sowohl durch aerobische als auch durch anaerobische Mikroorganismen. Das Verpackungsmaterial muß eine geringe Dampfdurchlässigkeit besitzen, damit der Käse nicht austrocknet.During storage and during the manufacturing (maturing) period For some foods, for example cheese, it is important to protect the product from oxygen in order to develop of microorganisms and the formation of mold or mildew on their surface. The packing material for Cheese must therefore let through a certain amount of carbon dioxide in order to prevent the tightly sealed packaging swells and tears. Carbon dioxide is produced by both aerobic and anaerobic microorganisms. The packaging material must have a low vapor permeability so that the cheese does not dry out.
709833/0597709833/0597
-Z--Z-
Jede Käsesorte mit längerer Reifezeit, von zum Beispiel ein bis zwei Monaten, erfordert unter Idealbedingungen ein Verpackungsmaterial, dessen Durchlässigkeitsziffer für Kohlendioxyd und Sauerstoff sich innerhalb bestimmter Grenzen hält.Every type of cheese with a longer ripening time, for example one to two months, requires a packaging material under ideal conditions, whose coefficient of permeability for carbon dioxide and oxygen is kept within certain limits.
Eine große Anzahl verschiedener Werkstoffe wird derzeit als Packmaterial beim Reifeprozeß und bei der Lagerung von Käse benutzt, z.B. mit Nitrozellulose lackiertes Zellophan, das mit Polyethene beschichtet ist, Polyester mit Polyethene beschichtet, polyethene-beschichtetes Polyamid, mit Polyvinyldenchlorid lackiertes Zellophan, das mit Polyethene und PoIyvinyldenclorid-Film beschichtet ist. Alle genannten Verpackungswerkstoffe haben unter bestimmten Lagerbedingungen (Temperatur und Feuchtigkeit) eine bestimmte Durchlässigkeit für Kohlendioxyd, Dampf und Sauerstoff, in der Praxis aber sind diese Eigenschaften nicht immer ausreichend, um die obigen Anforderungen zu erfüllen. Die benutzten Verpackungsfolien sind entweder zu dicht oder zu durchlässig. A large number of different materials are currently used as packaging material in the ripening process and in the storage of cheese used, e.g. cellophane coated with nitrocellulose, coated with polyethene, polyester coated with polyethene, polyethene-coated polyamide, cellophane coated with polyvinyldene chloride, that with polyethene and polyvinyldene chloride film is coated. All packaging materials mentioned have under certain storage conditions (Temperature and humidity) a certain permeability for carbon dioxide, steam and oxygen, but in practice these properties are not always sufficient to meet the above requirements. The packaging films used are either too dense or too permeable.
In der DT-OS 2.318.028 ist eine Verpackung offenbart, bei welcher eine gasundurchlässige Folie und eine gasdurchlässige Folie miteinander kombiniert sind. Diese Verpackung ist für Frischfleisch vorgesehen und besitzt einen zweischichtigen Überzug, wobei eine Schicht gasdicht ist und abgerissen werden kann, um die andere, gasdurchlässige Schicht freizulegen. Mit solch einer Verpackung kann die Gasdurchlässigkeit nicht angepasst werden; die Verpackung ist entweder gasdicht oder gasdurchlässig.In DT-OS 2.318.028 a package is disclosed in which a gas-impermeable film and a gas-permeable film are combined with one another. This packaging is intended for fresh meat and has a two-layer coating, one layer being gas-tight and torn off can be to expose the other, gas-permeable layer. With such a packaging, the gas permeability not be adjusted; the packaging is either gas-tight or gas-permeable.
709833/0597709833/0597
< r- < r-
Die Aufgabe der Erfindung besteht daher darin, eine Verpackungsfolie zu schaffen, die als solche zum Verpacken z.B. von Käse für das Reifen und die Lagerung während längerer Zeit verwendet werden kann, ohne daß irgendeine weitere Ausrüstung oder ein besonderes Verpackungsverfahren notwendig wären. Eine weitere Aufgabe der Erfindung besteht somit darin, die gesamte Gasdurchlässigkeit der Verpackungsfolienlagen dem gewünschten Maß anpassen zu können.The object of the invention is therefore to provide a packaging film to create, as such, for packaging e.g. cheese for ripening and storage during can be used for a longer period of time without any further equipment or special packaging process would be necessary. Another object of the invention is thus the total gas permeability of the To be able to adapt packaging film layers to the desired size.
Die erfindungsgemäße Verpackungsfolie ist dadurch gekennzeichnet, daß die gasdurchlässige Folie wenigstens zum Teil mit einem im wesentlichen gasundurchlässigen Überzug versehen ist, der gegebenenfalls seinerseits mit einer gasdurchlässigen Folie oder Schicht überzogen ist.The packaging film according to the invention is characterized in that the gas-permeable film is at least partially is provided with an essentially gas-impermeable coating, which in turn is optionally provided with a gas-permeable coating Film or layer is coated.
Der Überzug besteht vorzugsweise aus einer Lack-, Metalloder Kunststoffschicht. Vom verfahrenstechnischen Standpunkt aus gesehen, bildet dieser Überzug ein Streifen- oder Schachbrettmuster auf der Folie. Selbstverständlich ist es möglich, andere Muster herzustellen oder einfach nur einen Teil der Folie mit dem Überzug zu versehen und andere Teile freizulassen. The coating preferably consists of a lacquer, metal or plastic layer. From the procedural point of view From the point of view of this, this coating forms a striped or checkerboard pattern on the film. Of course it is possible make other patterns or just cover part of the film and leave other parts free.
Die Verpackungsfolie kann z.B. folgendermaßen aussehen: Zum Teil mit Aluminium vacuummetallisiertes orientiertesThe packaging film can look like this: Partly vacuum-metallized with aluminum, oriented
- 4 709833/0597 - 4 709833/0597
-H--H-
Polypropen, auf das eine Polyethene-Folle aufgeklebt ist. Orientiertes Polypropene und Polyethene haben hohe Gasdurchlässigkeiten, die für Käsepackungen etwa um das Zehnfache zu hoch sind.Polypropene to which a polyethene film is glued. Oriented polypropene and polyethene have high gas permeabilities, around ten times that for cheese packs are too high.
Die Gasdurchlässigkeit kann mit Hilfe einer Vacuum-Metallisierung soweit verringert werden, daß sie praktisch nicht mehr existiert. Im vorliegenden Falle wird z.B. 90 % der Oberfläche des Verpackungswerkstoffes vacuummetallisiert, um die Gesamtdurchlässigkeit des Verpackungswerkstoffes auf 10 % zu mindern. Die Vacuum-Metallisierung wird z.B. in Längsrichtung derart ausgeführt, daß sich in 30 mm Abstand ein glänzender, durchsichtiger, gasdurchlässiger Streifen wiederholt. Ähnliches kann erreicht werden mit dichtem PVDS-Lack und Benutzung der beschriebenen Streifenmethod·.The gas permeability can be reduced with the help of vacuum metallization to such an extent that it practically no longer exists. In the present case, for example, 90 % of the surface of the packaging material is vacuum metallized in order to reduce the overall permeability of the packaging material to 10%. The vacuum metallization is carried out, for example, in the longitudinal direction in such a way that a shiny, transparent, gas-permeable strip repeats itself at a distance of 30 mm. Something similar can be achieved with dense PVDS lacquer and using the strip method described.
Mit diesen gestreiften Lagen kann eine Folie z.B. aus Polypropen oder Polyethene dann derart beschichtet werden, daß die Metallisierung oder die Lackschicht zwischen die Lagen der Foil· zu liegen kommen, um die Lack- oder Aluminiumschicht zu schützen. Da die Lagen aufgebracht werden, werden diese ebenfalls durchlässig.These striped layers can then be used to coat a film made of, for example, polypropene or polyethene in such a way that the metallization or the lacquer layer come to lie between the layers of the foil, around the lacquer or aluminum layer to protect. Since the layers are applied, they also become permeable.
Das Verpackungsmaterial kann auch durch nachträgliche Lackierung und Aluminisierung der fertigbeschichteten Folie oder der Folienkombination hergestellt werden. In diesem FalleThe packaging material can also be applied by subsequent painting and aluminizing of the coated film or the combination of foils. In this case
709833/0597709833/0597
muß die Lack- und vacuumaluminislerte Schicht mit einer durchlässigen, kratzfesten Schutzlackierung Überzogen werden.The lacquer and vacuum-aluminum layer must be coated with a permeable, scratch-resistant protective lacquer will.
Als Beispiele für Verpackungsfolien sind hier einige erwähnt, wie sie derzeit in wesentlichen benutzt werden. Es ist selbstverständlich, daß irgendwelche Folien Bit relativ hohen Gasdurchlässigkeiten, die für Verpackungszwecke benutzt werden, als Basisfilm verwendet werden können; dieser Basisfilm wird mit einem geeigneten überzug versehen, der die Durchlässigkeit des Basisfilms verkleinert.Some examples of packaging films are mentioned here, as they are currently essentially used. It goes without saying that any foil bit is relative high gas permeabilities used for packaging purposes can be used as the base film; this base film is provided with a suitable coating which reduces the permeability of the base film.
709833/0537709833/0537
Claims (5)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI760361A FI760361A (en) | 1976-02-13 | 1976-02-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2703475A1 true DE2703475A1 (en) | 1977-08-18 |
Family
ID=8509754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19772703475 Pending DE2703475A1 (en) | 1976-02-13 | 1977-01-28 | PACKAGING FILM |
Country Status (7)
| Country | Link |
|---|---|
| AT (1) | ATA83377A (en) |
| DE (1) | DE2703475A1 (en) |
| DK (1) | DK18777A (en) |
| FI (1) | FI760361A (en) |
| FR (1) | FR2340817A1 (en) |
| NO (1) | NO770129L (en) |
| SE (1) | SE7701320L (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2059339A (en) * | 1979-09-24 | 1981-04-23 | Challis A A L | Bonding two surfaces together |
-
1976
- 1976-02-13 FI FI760361A patent/FI760361A/fi not_active Application Discontinuation
-
1977
- 1977-01-17 NO NO770129A patent/NO770129L/en unknown
- 1977-01-19 DK DK18777A patent/DK18777A/en unknown
- 1977-01-28 DE DE19772703475 patent/DE2703475A1/en active Pending
- 1977-02-04 FR FR7703279A patent/FR2340817A1/en active Granted
- 1977-02-07 SE SE7701320A patent/SE7701320L/en unknown
- 1977-02-09 AT AT83377A patent/ATA83377A/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| FR2340817B3 (en) | 1979-10-05 |
| FI760361A (en) | 1977-08-14 |
| DK18777A (en) | 1977-08-14 |
| SE7701320L (en) | 1977-08-14 |
| NO770129L (en) | 1977-08-16 |
| ATA83377A (en) | 1978-02-15 |
| FR2340817A1 (en) | 1977-09-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OHJ | Non-payment of the annual fee |