CA2426801C - Plastic film - Google Patents
Plastic film Download PDFInfo
- Publication number
- CA2426801C CA2426801C CA002426801A CA2426801A CA2426801C CA 2426801 C CA2426801 C CA 2426801C CA 002426801 A CA002426801 A CA 002426801A CA 2426801 A CA2426801 A CA 2426801A CA 2426801 C CA2426801 C CA 2426801C
- Authority
- CA
- Canada
- Prior art keywords
- film
- plastic film
- plastic
- film according
- cavities
- 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.)
- Expired - Fee Related
Links
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
- B32B27/36—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
- 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
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
-
- 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
- B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
- B65D75/04—Articles or materials wholly enclosed in single sheets or wrapper blanks
- B65D75/14—Articles or materials wholly enclosed in single sheets or wrapper blanks in sheets or blanks folded-up around all sides of the contents from a portion on which the contents are placed
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/20—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive itself
- C09J2301/204—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive itself the adhesive coating being discontinuous
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2400/00—Presence of inorganic and organic materials
- C09J2400/10—Presence of inorganic materials
- C09J2400/16—Metal
- C09J2400/163—Metal in the substrate
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2423/00—Presence of polyolefin
- C09J2423/006—Presence of polyolefin in the substrate
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2467/00—Presence of polyester
- C09J2467/006—Presence of polyester in the substrate
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Laminated Bodies (AREA)
- Wrappers (AREA)
- Materials For Medical Uses (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
- Adhesive Tapes (AREA)
- Medical Preparation Storing Or Oral Administration Devices (AREA)
Abstract
Plastic film (1, 21), especially for packaging three-dimensional objects that are formed preferably during the packaging process, such as soup cubes in particular, with a base film (2, 22) made from a polyolefin or polyethylene terephthalate that is preferably metallised on one side, where an oriented polypropylene film, preferably a biaxially oriented polypropylene film or a PET film, is provided as the base film (2, 22), on the side of which with the metallisation (3) printing (5) is provided, while a preferably ribbon-shaped pattern coating of cold seal adhesive (6) is applied to the side of the base film (2, 22) facing away from the metallisation (3).
Description
Description Plastic film The invention relates to a plastic film, especially for packaging three-dimensional objects that are formed preferably during the packaging process, such as soup cubes in particular, with a base film made from a polyolefin that is metallised on one side.
DE-A-100 21 687 discloses such a film, that is provided on at least one side with an adhesive or sealing layer.
On the ba.sis of this, the aim of the invention is to design a plastic film of the kind outlined above in such a way that it can be produced efficiently and provides the object that is to be packaged with optimum protection.
In the solution to this problem proposed by the invention, an oriented polypropylene film, preferably a biaxially oriented polypropylene film or a PET film, is provided as the base film, on the side of which with the metallisation printing is provided, while a preferably ribbon-shaped pattern coating of cold seal adhesive is applied to the side of the base film facing away from the metallisation.
Only the amount of the cold seal adhesive provided to close a pack produced from a section of the plastic film that is needed to achieve a sufficiently tight closure is applied.
In accordance with the invention, the printing is covered to some extent by a pattern coating of release lacquer, with the areas to which the lacquer is applied coinciding with those to which the cold seal adhesive is applied.
So, the present invention as claimed is basically directed to a plastic film for packaging three-dimensional objects while said objects are being formed, said film comprising a base film made from an oriented polypropylene film, said film having one metallised side on which a printing is provided, said printing having areas covered by a pattern coating of release lacquer, said film also having another opposite side on which a pattern coating of cold seal adhesive is applied, said cold seal adhesive being applied in areas coinciding with those of the lacquer.
This invention provides an effective way to prevent layers of the plastic film located on top of each other sticking together when the film is wound to form a reel.
It has proved to be very advantageous in another further development of the invention if a primer and / or tie layer is provided between the metallisation and the printing.
A durable bond between the printing and the metallisation is achieved as a result.
In another advantageous further development of the invention a compact film is provided as the base film.
2a A film with cavities in it can, however, be provided as the base film in accordance with the invention too.
Light refraction occurs on the edges surrounding the cavities and makes the film opaque.
DE-A-100 21 687 discloses such a film, that is provided on at least one side with an adhesive or sealing layer.
On the ba.sis of this, the aim of the invention is to design a plastic film of the kind outlined above in such a way that it can be produced efficiently and provides the object that is to be packaged with optimum protection.
In the solution to this problem proposed by the invention, an oriented polypropylene film, preferably a biaxially oriented polypropylene film or a PET film, is provided as the base film, on the side of which with the metallisation printing is provided, while a preferably ribbon-shaped pattern coating of cold seal adhesive is applied to the side of the base film facing away from the metallisation.
Only the amount of the cold seal adhesive provided to close a pack produced from a section of the plastic film that is needed to achieve a sufficiently tight closure is applied.
In accordance with the invention, the printing is covered to some extent by a pattern coating of release lacquer, with the areas to which the lacquer is applied coinciding with those to which the cold seal adhesive is applied.
So, the present invention as claimed is basically directed to a plastic film for packaging three-dimensional objects while said objects are being formed, said film comprising a base film made from an oriented polypropylene film, said film having one metallised side on which a printing is provided, said printing having areas covered by a pattern coating of release lacquer, said film also having another opposite side on which a pattern coating of cold seal adhesive is applied, said cold seal adhesive being applied in areas coinciding with those of the lacquer.
This invention provides an effective way to prevent layers of the plastic film located on top of each other sticking together when the film is wound to form a reel.
It has proved to be very advantageous in another further development of the invention if a primer and / or tie layer is provided between the metallisation and the printing.
A durable bond between the printing and the metallisation is achieved as a result.
In another advantageous further development of the invention a compact film is provided as the base film.
2a A film with cavities in it can, however, be provided as the base film in accordance with the invention too.
Light refraction occurs on the edges surrounding the cavities and makes the film opaque.
In accordance with the invention, the cavities can take the form of vacuoles that are produced when the film is oriented.
Another possible way to create the cavities is to produce them by foaming the film.
It has proved to be very advantageous if in accordance with the invention the compact base film has a tliickness of about 10 to 100 , preferably 20 to 50 and in particular 28to32 .
In accordance with another advantageous further development of the invention, the base film with cavities in it has a thickness of about 10 to 100 , preferably 20 to 50 and in particular 35 to 42 .
Two embodiments of the invention are illustrated in the drawings:
Fig. 1 is a diagram of the structure of a plastic film with a compact base film that is metallised on one side and Fig. 2 is a diagram of another plastic film with a base film that has cavities in it.
1 in Fig. 1 is a plastic film that has a base film 2 made from oriented polyproplyene (OPP) 30 thick. This base film 2 is provided with metallisation 3 on one side to which printing 5 has been applied via a primer and / or tie layer 4. The base film 2 is provided with a pattem coating of cold seal adhesive 6 on its side facing away from the printing and / or metallisation. The printing 5 is provided on the other side with a release layer 7 that is located in accordance with the cold seal adhesive coating. When the plastic film is wound into a reel, the cold seal adhesive and the release layer 7 are located on top of each other and thus prevent the cold seal adhesive 6 from sticking to the adjacent side of the plastic film.
Another possible way to create the cavities is to produce them by foaming the film.
It has proved to be very advantageous if in accordance with the invention the compact base film has a tliickness of about 10 to 100 , preferably 20 to 50 and in particular 28to32 .
In accordance with another advantageous further development of the invention, the base film with cavities in it has a thickness of about 10 to 100 , preferably 20 to 50 and in particular 35 to 42 .
Two embodiments of the invention are illustrated in the drawings:
Fig. 1 is a diagram of the structure of a plastic film with a compact base film that is metallised on one side and Fig. 2 is a diagram of another plastic film with a base film that has cavities in it.
1 in Fig. 1 is a plastic film that has a base film 2 made from oriented polyproplyene (OPP) 30 thick. This base film 2 is provided with metallisation 3 on one side to which printing 5 has been applied via a primer and / or tie layer 4. The base film 2 is provided with a pattem coating of cold seal adhesive 6 on its side facing away from the printing and / or metallisation. The printing 5 is provided on the other side with a release layer 7 that is located in accordance with the cold seal adhesive coating. When the plastic film is wound into a reel, the cold seal adhesive and the release layer 7 are located on top of each other and thus prevent the cold seal adhesive 6 from sticking to the adjacent side of the plastic film.
The base film can consist of PET instead of OPP.
An appropriate structure for a plastic film 21 is shown in the embodiment illustrated in Fig. 2. The base film 22 consists, however, of an opaque, oriented polypropylene film (OPP), the opacity of which is produced by vacuoles created during orientation. This base film is 38 thick and is again provided on one side with metallisation 3, to which a primer and / or tie layer 4 is applied. This primer layer enables the subsequently applied printing 5 to bond securely. The side of the base film 22 facing away from the metallisation has a pattern coating of cold seal adhesive 6, application of which is provided in accordance with a release layer 7 applied to the printing 5, which prevents the cold seal adhesive from sticking when the plastic film is wound into a reel.
In order to improve the windability of the plastic film, the areas next to the release layer and / or the cold seal adhesive can be filled up with coatings too.
The base film can have been given its opacity by foaming too, with light refraction also occurring on the bubbles produced inside.
An appropriate structure for a plastic film 21 is shown in the embodiment illustrated in Fig. 2. The base film 22 consists, however, of an opaque, oriented polypropylene film (OPP), the opacity of which is produced by vacuoles created during orientation. This base film is 38 thick and is again provided on one side with metallisation 3, to which a primer and / or tie layer 4 is applied. This primer layer enables the subsequently applied printing 5 to bond securely. The side of the base film 22 facing away from the metallisation has a pattern coating of cold seal adhesive 6, application of which is provided in accordance with a release layer 7 applied to the printing 5, which prevents the cold seal adhesive from sticking when the plastic film is wound into a reel.
In order to improve the windability of the plastic film, the areas next to the release layer and / or the cold seal adhesive can be filled up with coatings too.
The base film can have been given its opacity by foaming too, with light refraction also occurring on the bubbles produced inside.
Claims (14)
1. A plastic film for packaging three-dimensional objects while said objects are being formed, said film comprising a base film made from an oriented polypropylene film, said film having one metallised side on which a printing is provided, said printing having areas covered by a pattern coating of release lacquer, said film also having another opposite side on which a pattern coating of cold seal adhesive is applied, said cold seal adhesive being applied in areas coinciding with those of the lacquer.
2. The plastic film according to claim 1, wherein the oriented polypropylene film is a biaxially oriented polypropylene film or PET film.
3. The plastic film according to claim 1 or 2, wherein a primer and / or tie layer is provided between the metallised side and the printing provided on it.
4. The plastic film according to any one of claims 1 to 3, wherein the base film is a compact film.
5. The plastic film according to any one of claims 1 to 3, wherein the base film is a film with cavities in it.
6. The plastic film according to claim 5, wherein the cavities take the form of vacuoles that are produced when the film is oriented.
7. The plastic film according to claim 5, wherein the cavities are produced by foaming.
8. The plastic film according to claim 4, wherein the compact film has a thickness of 10 to 100 µ.
9. The plastic film according to claim 8, wherein the compact film has a thickness of 20 to 50 µ.
10. The plastic film according to claim 9, wherein the compact film has a thickness of 28 to 32 µ.
11. The plastic film according to any one of claims 5 to 7, wherein the film with cavities in it has a thickness of about 10 to 100 µ.
12. The plastic film according to claim 11, wherein the film with cavities in it has a thickness of 20 to 50 µ.
13. The plastic film according to claim 12, wherein the film with cavities in it has a thickness of 35 to 42 µ.
14. The plastic film according to any one of claims 1 to 13, wherein the three-dimensional objects are soup cubes.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10221143A DE10221143B4 (en) | 2002-05-11 | 2002-05-11 | plastic film |
| DE10221143.4 | 2002-05-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2426801A1 CA2426801A1 (en) | 2003-11-11 |
| CA2426801C true CA2426801C (en) | 2008-06-03 |
Family
ID=29285323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002426801A Expired - Fee Related CA2426801C (en) | 2002-05-11 | 2003-04-28 | Plastic film |
Country Status (15)
| Country | Link |
|---|---|
| EP (1) | EP1361168B1 (en) |
| CN (1) | CN1260063C (en) |
| AT (1) | ATE536997T1 (en) |
| AU (1) | AU2003203876B2 (en) |
| BR (1) | BR0301370A (en) |
| CA (1) | CA2426801C (en) |
| CO (1) | CO5460269A1 (en) |
| DE (1) | DE10221143B4 (en) |
| ES (1) | ES2375793T3 (en) |
| HK (1) | HK1060998A1 (en) |
| IL (1) | IL155499A (en) |
| NZ (1) | NZ525611A (en) |
| OA (1) | OA12411A (en) |
| PL (1) | PL210588B1 (en) |
| RU (1) | RU2247030C2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004062600A1 (en) * | 2004-04-02 | 2005-10-27 | Huhtamaki Ronsberg, Zweigniederlassung Der Huhtamaki Deutschland Gmbh & Co. Kg | Windable film for producing a packaging |
| CN102320172A (en) * | 2011-08-05 | 2012-01-18 | 大连方盛塑料有限公司 | Plastic film |
| WO2013036324A2 (en) * | 2011-09-07 | 2013-03-14 | Exxonmobil Oil Corporation | Metallized films, pressure-sensitive label structures, and methods of making same |
| EP4339230A1 (en) * | 2022-09-07 | 2024-03-20 | NanoPolymer Ltd. | Multilayer packaging film |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1891363U (en) * | 1964-01-14 | 1964-04-16 | Metaplast K G Helmuth Schmoock | WRAPPING FILM. |
| DE4116808A1 (en) * | 1991-05-23 | 1992-11-26 | Hoechst Ag | CUP-LIKE PACKING WITH PLASTIC LID FILM |
| DE9111670U1 (en) * | 1991-09-19 | 1991-10-31 | Ebert Folien AG, 65201 Wiesbaden | Plastic packaging film with decorative layer |
| DK9600302U3 (en) * | 1996-09-10 | 1997-12-29 | Danapak As | packaging Foil |
| UA395U (en) * | 1996-12-17 | 1999-08-30 | Hіна Семенівна Фельштинер | MULTILAYER PACKAGING MATERIAL |
| FR2761960B1 (en) * | 1997-04-09 | 1999-05-28 | Pechiney Emballage Flexible Eu | POLYOLEFIN-BASED FILM FOR FORMING A FOLDING PACKAGE |
| EP0891930A1 (en) * | 1997-07-17 | 1999-01-20 | Alusuisse Technology & Management AG | Sheet wrapping material |
| EP1010519A1 (en) * | 1998-12-16 | 2000-06-21 | Alusuisse Technology & Management AG | Sterilizable laminated sheet |
| PL201579B1 (en) * | 1999-10-07 | 2009-04-30 | Huhtamaki Ronsberg | Plastic foil |
| DE10021687A1 (en) * | 2000-05-05 | 2001-11-08 | 4P Verpackungen Ronsberg Gmbh | Plastic foil for packaging, in particular, cube-shaped products consists of polyolefine, preferably polyethylene or polypropylene |
| RU2179523C1 (en) * | 2000-07-28 | 2002-02-20 | Государственное учреждение Всероссийский научно-исследовательский институт молочной промышленности | Laminated packing material |
-
2002
- 2002-05-11 DE DE10221143A patent/DE10221143B4/en not_active Expired - Fee Related
-
2003
- 2003-04-16 IL IL155499A patent/IL155499A/en not_active IP Right Cessation
- 2003-04-22 AT AT03009173T patent/ATE536997T1/en active
- 2003-04-22 ES ES03009173T patent/ES2375793T3/en not_active Expired - Lifetime
- 2003-04-22 EP EP03009173A patent/EP1361168B1/en not_active Expired - Lifetime
- 2003-04-28 CA CA002426801A patent/CA2426801C/en not_active Expired - Fee Related
- 2003-04-28 AU AU2003203876A patent/AU2003203876B2/en not_active Ceased
- 2003-05-01 NZ NZ52561103A patent/NZ525611A/en unknown
- 2003-05-06 OA OA1200300130A patent/OA12411A/en unknown
- 2003-05-07 BR BR0301370-7A patent/BR0301370A/en active Search and Examination
- 2003-05-08 RU RU2003113547/04A patent/RU2247030C2/en not_active IP Right Cessation
- 2003-05-08 CO CO03038555A patent/CO5460269A1/en not_active Application Discontinuation
- 2003-05-09 PL PL360050A patent/PL210588B1/en not_active IP Right Cessation
- 2003-05-09 CN CNB031313221A patent/CN1260063C/en not_active Expired - Fee Related
-
2004
- 2004-06-10 HK HK04104162A patent/HK1060998A1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| ES2375793T3 (en) | 2012-03-06 |
| BR0301370A (en) | 2004-08-24 |
| NZ525611A (en) | 2004-12-24 |
| CN1462684A (en) | 2003-12-24 |
| CA2426801A1 (en) | 2003-11-11 |
| DE10221143B4 (en) | 2005-03-24 |
| PL360050A1 (en) | 2003-11-17 |
| ATE536997T1 (en) | 2011-12-15 |
| PL210588B1 (en) | 2012-02-29 |
| HK1060998A1 (en) | 2004-09-03 |
| RU2247030C2 (en) | 2005-02-27 |
| DE10221143A1 (en) | 2003-11-27 |
| CO5460269A1 (en) | 2004-11-30 |
| CN1260063C (en) | 2006-06-21 |
| AU2003203876B2 (en) | 2005-08-11 |
| IL155499A (en) | 2006-08-20 |
| EP1361168A9 (en) | 2004-04-14 |
| IL155499A0 (en) | 2003-11-23 |
| AU2003203876A1 (en) | 2003-12-04 |
| EP1361168A2 (en) | 2003-11-12 |
| OA12411A (en) | 2006-04-18 |
| EP1361168A3 (en) | 2004-02-11 |
| EP1361168B1 (en) | 2011-12-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |