EP0431292A2 - Film-type combination of materials - Google Patents
Film-type combination of materials Download PDFInfo
- Publication number
- EP0431292A2 EP0431292A2 EP90120174A EP90120174A EP0431292A2 EP 0431292 A2 EP0431292 A2 EP 0431292A2 EP 90120174 A EP90120174 A EP 90120174A EP 90120174 A EP90120174 A EP 90120174A EP 0431292 A2 EP0431292 A2 EP 0431292A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- adhesive coating
- weak point
- materials
- cold adhesive
- heated
- 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.)
- Ceased
Links
- 239000000463 material Substances 0.000 title claims abstract description 16
- 239000011248 coating agent Substances 0.000 claims abstract description 12
- 238000000576 coating method Methods 0.000 claims abstract description 12
- 238000004806 packaging method and process Methods 0.000 claims abstract description 9
- 235000013305 food Nutrition 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000000853 adhesive Substances 0.000 claims description 11
- 230000001070 adhesive effect Effects 0.000 claims description 10
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 claims description 4
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 239000007767 bonding agent Substances 0.000 abstract 1
- 239000003292 glue Substances 0.000 description 2
- 239000004922 lacquer Substances 0.000 description 1
- 239000012939 laminating adhesive Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/34—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging foodstuffs or other articles intended to be cooked or heated within the package
- B65D81/3446—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging foodstuffs or other articles intended to be cooked or heated within the package specially adapted to be heated by microwaves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2205/00—Venting means
Definitions
- the invention relates to a film-like material combination for packaging foods which are to be heated in the packaged state in a microwave oven or the like.
- the invention has for its object to provide a combination of materials for the stated purpose, with which the food can be heated in the packaged state.
- a cold adhesive coating is provided for the closure of the packaging, which is provided with at least one weak point, at which water vapor generated during heating can escape while separating the weak point.
- the weak point is still closed, so that the filling material is neither contaminated nor can it escape. Only when a certain amount is exceeded The weak point opens and the water vapor escapes.
- the cold adhesive coating is designed with a smaller width in the region of the weak points.
- This smaller width of the strip-shaped cold adhesive coating is sufficient for normal sealing of the packaging, but cannot withstand the increased internal pressure when water vapor is generated.
- paper is provided on the outside of the material structure, followed by PETP on the inside, which in turn serves as a carrier for the cold adhesive coating.
- the particularly hot packaging is easier to handle.
- FIG. 1 in FIG. 1 denotes a combination of materials that is used to pack food that can be heated in a microwave oven.
- the material combination consists of a carrier layer 2 made of paper, onto which a plastic film 4 made of PETP is applied with the aid of a laminating adhesive 3.
- This PETP layer 4 is a Cold adhesive 5 applied in strips, which comes to lie on top of one another when a blank of this material is folded into a package and thereby adheres to itself.
- the strip-shaped cold glue is constricted in several places, so that weak spots 6 form, in the area of which there is only a relatively narrow cold glue bridge. When they are unfolded, these narrow bridges come to rest on one another so that their narrow width is preserved.
- the paper layer 2 can be provided with paint 7 and a lacquer layer 8 on its side facing away from the plastic layer, as a result of which the paper receives additional protection.
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Food Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Package Specialized In Special Use (AREA)
- Packages (AREA)
- Cartons (AREA)
Abstract
Description
Die Erfindung betrifft eine folienartige Materialkombination zum Verpacken von Lebensmitteln, welche im verpackten Zustand in einem Mikrowellenofen oder dergleichen erhitzt werden sollen.The invention relates to a film-like material combination for packaging foods which are to be heated in the packaged state in a microwave oven or the like.
Beim Erhitzen der meisten Lebensmittel entsteht Wasserdampf, der die ungeöffnete Verpackung aus einem derartigen Material zum Platzen bringen würde. Andererseits ist es aber auch nicht möglich, die Verpackung vor dem Erhitzen zu öffnen, da dann das Füllgut austreten würde.When most food is heated, water vapor is generated which would cause the unopened packaging made of such a material to burst. On the other hand, it is also not possible to open the packaging before heating, as the contents would then escape.
Der Erfindung liegt die Aufgabe zugrunde, eine Materialkombination für den genannten Zweck zu schaffen, mit der die Lebensmittel im verpackten Zustand erhitzt werden können.The invention has for its object to provide a combination of materials for the stated purpose, with which the food can be heated in the packaged state.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß für den Verschluß der Verpackung eine Kaltkleberbeschichtung vorgesehen ist, welche mit wenigstens einer Schwachstelle versehen ist, an der beim Erhitzen entstehender Wasserdampf unter Auftrennung der Schwachstelle entweichen kann.This object is achieved in that a cold adhesive coating is provided for the closure of the packaging, which is provided with at least one weak point, at which water vapor generated during heating can escape while separating the weak point.
Beim Beginn der Erhitzung ist die Schwachstelle noch geschlossen, so daß das Füllgut weder verunreinigt wird, noch austreten kann. Erst bei Überschreiten eines gewissen Innendrucks geht die Schwachstelle auf und läßt den Wasserdampf entweichen.At the beginning of the heating, the weak point is still closed, so that the filling material is neither contaminated nor can it escape. Only when a certain amount is exceeded The weak point opens and the water vapor escapes.
Bei einer streifenförmig aufgetragenen Kaltkleberbeschichtung ist es erfindungsgemäß sehr vorteilhaft, wenn die Kaltkleberbeschichtung im Bereich der Schwachstellen mit geringerer Breite ausgebildet ist.In the case of a cold adhesive coating applied in the form of a strip, it is very advantageous according to the invention if the cold adhesive coating is designed with a smaller width in the region of the weak points.
Diese geringere Breite der streifenförmigen Kaltkleberbeschichtung reicht zum normalen Abdichten der Verpackung völlig aus, kann aber dem erhöhten Innendruck beim Entstehen von Wasserdampf nicht standhalten.This smaller width of the strip-shaped cold adhesive coating is sufficient for normal sealing of the packaging, but cannot withstand the increased internal pressure when water vapor is generated.
Sehr vorteilhaft ist es auch, wenn erfindungsgemäß an der Außenseite des Materialaufbaus Papier vorgesehen ist, an das sich nach innen PETP anschließt, das wiederum als Träger für die Kaltkleberbeschichtung dient.It is also very advantageous if, according to the invention, paper is provided on the outside of the material structure, followed by PETP on the inside, which in turn serves as a carrier for the cold adhesive coating.
Mit einer Papieraußenschicht läßt sich die insbesondere heiße Verpackung leichter handhaben.With a paper outer layer, the particularly hot packaging is easier to handle.
In der Zeichnung ist die Erfindung anhand eines Ausführungsbeispiels veranschaulicht. Dabei zeigen:
- Fig.1 eine Ansicht einer Materialkombination mit streifenförmig aufgebrachter Kaltkleberbeschichtung und
- Fig.2 einen Schnitt durch die Materialkombination.
- 1 shows a view of a material combination with a cold-adhesive coating applied in strips and
- 2 shows a section through the combination of materials.
Mit 1 ist in Fig.1 eine Materialkombination bezeichnet, die zum Verpacken von Lebensmitteln dient, die in einem Mikrowellenofen erhitzbar sind. Wie insbesondere aus Fig.2 ersichtlich ist, besteht die Materialkombination aus einer Trägerschicht 2 aus Papier, auf die mit Hilfe eines Kaschierklebers 3 eine Kunststoffolie 4 aus PETP aufgebracht ist. Auf diese PETP-Schicht 4 ist ein Kaltkleber 5 streifenförmig aufgebracht, der beim Zusammenfalten eines Zuschnittes dieses Materials zu einer Verpackung aufeinander zu liegen kommt und dabei gegen sich selbst klebt. An mehreren Stellen ist der streifenförmige Kaltkleber eingeschnürt, so daß sich Schwachstellen 6 bilden, in deren Bereich nur eine verhältnismäßig schmale Kaltkleberbrücke vorhanden ist. Beim Aufeinanderfalten kommen diese schmalen Brücken aufeinander zu liegen, so daß sie in ihrer geringen Breite erhalten bleiben.1 in FIG. 1 denotes a combination of materials that is used to pack food that can be heated in a microwave oven. As can be seen in particular from FIG. 2, the material combination consists of a
Wie in Fig.2 dargestellt kann die Papierschicht 2 auf ihrer von der Kunststoffschicht abgewandten Seite mit Farbe 7 sowie einer Lackschicht 8 versehen sein, wodurch das Papier einen zusätzlichen Schutz erhält.As shown in FIG. 2, the
Claims (3)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19893938809 DE3938809A1 (en) | 1989-11-23 | 1989-11-23 | FILM-LIKE MATERIAL COMBINATION |
| DE3938809 | 1989-11-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0431292A2 true EP0431292A2 (en) | 1991-06-12 |
| EP0431292A3 EP0431292A3 (en) | 1992-04-01 |
Family
ID=6394048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19900120174 Ceased EP0431292A3 (en) | 1989-11-23 | 1990-10-20 | Film-type combination of materials |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0431292A3 (en) |
| DE (1) | DE3938809A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10253916B4 (en) * | 2002-11-19 | 2005-07-28 | Volkmar Frenzel Eiscrem und Tiefkühlkost | Microwave bag with pressure relief valves |
| DE102006017834A1 (en) * | 2006-04-13 | 2007-10-18 | Cfs Kempten Gmbh | A microwaveable packaging |
| DE102009018489A1 (en) * | 2009-04-22 | 2010-10-28 | Huhtamaki Ronsberg, Zweigniederlassung Der Huhtamaki Deutschland Gmbh & Co. Kg | Packaging, in particular microwave packaging bags, with pressure compensating valve with variable flow cross section |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0256791A2 (en) * | 1986-08-18 | 1988-02-24 | Nabisco Brands, Inc. | Package for microwaveable popcorn, method for production of the package, and apparatus for sealing the package |
| EP0294087A2 (en) * | 1987-06-05 | 1988-12-07 | Nabisco Brands, Inc. | Microwave popcorn product with serving bowl feature |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3937396A (en) * | 1974-01-18 | 1976-02-10 | Schneider William S | Valve for vented package |
| US4261504A (en) * | 1979-09-21 | 1981-04-14 | Maryland Cup Corporation | Heat-sealable, ovenable containers |
-
1989
- 1989-11-23 DE DE19893938809 patent/DE3938809A1/en not_active Withdrawn
-
1990
- 1990-10-20 EP EP19900120174 patent/EP0431292A3/en not_active Ceased
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0256791A2 (en) * | 1986-08-18 | 1988-02-24 | Nabisco Brands, Inc. | Package for microwaveable popcorn, method for production of the package, and apparatus for sealing the package |
| EP0294087A2 (en) * | 1987-06-05 | 1988-12-07 | Nabisco Brands, Inc. | Microwave popcorn product with serving bowl feature |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0431292A3 (en) | 1992-04-01 |
| DE3938809A1 (en) | 1991-05-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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| AK | Designated contracting states |
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| PUAL | Search report despatched |
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| AK | Designated contracting states |
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| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: 4P VERPACKUNGEN RONSBERG GMBH |
|
| 17P | Request for examination filed |
Effective date: 19921001 |
|
| 17Q | First examination report despatched |
Effective date: 19940111 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED |
|
| 18R | Application refused |
Effective date: 19940704 |