EP2197671A1 - Laminates for easy-to-open packs - Google Patents
Laminates for easy-to-open packsInfo
- Publication number
- EP2197671A1 EP2197671A1 EP08802692A EP08802692A EP2197671A1 EP 2197671 A1 EP2197671 A1 EP 2197671A1 EP 08802692 A EP08802692 A EP 08802692A EP 08802692 A EP08802692 A EP 08802692A EP 2197671 A1 EP2197671 A1 EP 2197671A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sealing layer
- plastic film
- printing
- overcoat
- aluminum foil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
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
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal 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
- B32B15/00—Layered products comprising a layer of metal
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
-
- 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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
-
- 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
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/514—Oriented
- B32B2307/518—Oriented bi-axially
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/724—Permeability to gases, adsorption
- B32B2307/7242—Non-permeable
- B32B2307/7244—Oxygen barrier
-
- 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
- B32B2307/7246—Water vapor barrier
-
- 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
Definitions
- the invention relates to laminates for the production of easy-open packages without opening aid and packaging produced from the laminates.
- Paper-free laminates for the production of flat bags with three or four peripheral sealing seams - so-called 4-edge and 3-edge sealed bags - as well as tubular bags and stick-packs with a longitudinal seal and two transverse sealing seams have on the outside mainly a biaxially oriented polyester film or biaxially oriented polypropylene films or polyamide of at least 12 ⁇ m thickness.
- a biaxially oriented polyester film or biaxially oriented polypropylene films or polyamide of at least 12 ⁇ m thickness For the consumer, it is often very difficult to open the bag by tearing when no opening aid is present.
- a known opening aid consists of a notch introduced in the packing unit usually on the finished bag into a sealed seam.
- the laminate is weakened locally before bag production by means of laser cuts in the intended opening area. In either case, there is a possibility that an existing barrier layer is damaged or a notch extends into the unsealed area.
- cellophane In the case of laminates for the production of strip packaging, for the purpose of easier tearing, predominantly cellophane is used as the laminating film in a thickness> 20 ⁇ m.
- the resources of cellophane are limited and the production affects the environment.
- To protect against moisture cellophane is usually also provided with a paint.
- a tear-in help is required, or the opening is made by cutting with a pair of scissors, which affects the consumer-friendliness of the packaging.
- the invention has for its object to provide laminates that are too Can process bags and strip packs and which are easy to tear without tools and opening aids.
- a laminate carrying a 4 to 10 ⁇ m thick plastic film of biaxially oriented polyester, polypropylene or polyamide, optionally as a barrier against the passage of water vapor, gases and aroma substances, an aluminum foil, a vapor-deposited in vacuum or by painting, Extrusion coating or as a plastic film by laminating applied barrier layer and a sealing layer comprises.
- the plastic film may be replaced by at least one lacquer layer.
- the laminates can be divided into three groups:
- High barrier laminates These contain an aluminum foil as barrier layer.
- Laminates with medium barrier effect contain metallized plastic films or ceramic coatings, such as SiO x or Al 2 O 3 as
- the packages to be produced from the laminates are normally printed and, depending on the printing process and printing ink, may be overpainted.
- the sealant layers are usually polyethylenes, e.g. LDPE, LLDPE, MDPE and mixtures thereof or coextruded, metallocenes, polyethylenes and ionomers, e.g. Surlyn®, or coextruded films of these materials with PE as the backing layer.
- polyethylenes e.g. LDPE, LLDPE, MDPE and mixtures thereof or coextruded, metallocenes, polyethylenes and ionomers, e.g. Surlyn®, or coextruded films of these materials with PE as the backing layer.
- PAN polyacrylonitrile
- Polypropylene can also be used for special applications.
- the thickness of the sealing layers is in the range of 10 to 100 .mu.m, preferably 15 to 75 .mu.m.
- the sealing layers can be applied to the carrier material by means of extrusion coating or lamination.
- the thickness of the aluminum foil used as a barrier for the bag is about 5 to 30 ⁇ m, preferably 7 to 25 ⁇ m, and for strip packing about 12 to 50 ⁇ m, preferably 15 to 40 ⁇ m.
- the thickness of the biaxially oriented plastic film of polyester, polypropylene or polyamide arranged on the outside is 4 to 10 ⁇ m, preferably 6 to 8 ⁇ m.
- the plastic film and is laminated against the aluminum foil with the usual methods and materials.
- the plastic film can be counter-printed, or the pressure is frontal. In this case, a corresponding lubricious overcoat is required if the ink does not already have this property.
- the aluminum on the outside can also only be painted / printed / overpainted or printed / overpainted.
- the coating weight of the paints is 0.2 to 3 g / m 2 , preferably 0.5 to 2 g / m 2 .
- the lacquer base used is, for example, nitrocellulose, acrylate, polyurethane, polyester, polystyrene resins, resins based on urea or melamine resin, and mixtures thereof with corresponding additives for improving the adhesion, the heat resistance, the Sliding behavior, gloss or dullness, and printability in inline and conventional printing processes.
- the outside must have the same sliding properties as the plastic composite.
- Laminates having an average barrier effect have, for example, the following structures:
- the sealant layers are usually polyethylenes, eg LDPE, LLDPE, MDPE and mixtures thereof or coextruded, metallocenes polyethylenes and ionomers, eg Surlyn®, or coextruded films of these materials PE as carrier layer.
- polyethylenes eg LDPE, LLDPE, MDPE and mixtures thereof or coextruded, metallocenes polyethylenes and ionomers, eg Surlyn®, or coextruded films of these materials PE as carrier layer.
- PAN polyacrylonitrile
- Polypropylene can also be used for special applications.
- the thickness of the sealing layers is in the range of 10 to 100 microns, preferably 15 to 75 microns.
- the sealing layers can be applied to the carrier material by means of extrusion coating or lamination.
- the thickness of the biaxially oriented plastic film of polyester, polypropylene or polyamide arranged on the outside is 4 to 10 ⁇ m, preferably 6 to 8 ⁇ m.
- the plastic film can be counter-printed, or the pressure is frontal. In this case, a corresponding lubricious overcoat is required if the ink does not already have this property.
- Suitable barrier layers are, for example, silicon oxide (SiO x ), metal oxides, such as aluminum or iron oxide, vapor-deposited metal, such as aluminum, chromium, copper, iron, platinum, gold and silver, Ormoceren-based paint or a coating made of polyvinylidene chloride (PVdC).
- SiO x silicon oxide
- metal oxides such as aluminum or iron oxide
- vapor-deposited metal such as aluminum, chromium, copper, iron, platinum, gold and silver
- the barrier layer may be on the inside or outside of the outer plastic film.
- Laminates which do not require any special barrier properties have the following constructions, for example:
- the sealant layers are usually polyethylenes, e.g. LDPE, LLDPE, MDPE and mixtures thereof or coextruded, metallocenes, polyethylenes and ionomers, e.g. Surlyn®, or coextruded films of these materials with PE as the backing layer.
- polyethylenes e.g. LDPE, LLDPE, MDPE and mixtures thereof or coextruded, metallocenes, polyethylenes and ionomers, e.g. Surlyn®, or coextruded films of these materials with PE as the backing layer.
- PAN polyacrylonitrile
- Polypropylene can also be used for special applications.
- the thickness of the sealing layers is in the range of 10 to 100 microns, preferably 15 to 75 microns.
- the sealing layers can be applied to the carrier material by means of extrusion coating or lamination.
- the thickness of the arranged on the outside, biaxially oriented plastic film of polyester, polypropylene or polyamide is 4 to 10 microns, preferably 6 to 8 microns.
- the plastic film can be counter-printed, or the pressure is frontal. In this case, a corresponding lubricious overcoat is required lent, if the ink does not already have this property.
- Laminates which do not require any special barrier properties have, for example, the following structures:
- the laminates described above may also be combined with each other.
- the front and back of a bag or a strip pack may consist of a differently structured laminate.
- the laminates are particularly suitable for the production of 3- and 4-sealed edge bags, tubular bags and stick-packs.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08802692A EP2197671A1 (en) | 2007-10-04 | 2008-09-29 | Laminates for easy-to-open packs |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP07405301A EP2045072A1 (en) | 2007-10-04 | 2007-10-04 | Laminates for easy-open packets |
EP08802692A EP2197671A1 (en) | 2007-10-04 | 2008-09-29 | Laminates for easy-to-open packs |
PCT/EP2008/008255 WO2009043563A1 (en) | 2007-10-04 | 2008-09-29 | Laminates for easy-to-open packs |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2197671A1 true EP2197671A1 (en) | 2010-06-23 |
Family
ID=39144589
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07405301A Withdrawn EP2045072A1 (en) | 2007-10-04 | 2007-10-04 | Laminates for easy-open packets |
EP08802692A Withdrawn EP2197671A1 (en) | 2007-10-04 | 2008-09-29 | Laminates for easy-to-open packs |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07405301A Withdrawn EP2045072A1 (en) | 2007-10-04 | 2007-10-04 | Laminates for easy-open packets |
Country Status (3)
Country | Link |
---|---|
EP (2) | EP2045072A1 (en) |
TW (1) | TW200936465A (en) |
WO (1) | WO2009043563A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11794450B2 (en) | 2020-12-18 | 2023-10-24 | Altria Client Services Llc | Polymer-laminated metal lid |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU2799799A (en) * | 1998-03-03 | 1999-09-20 | Qpf, Llc | Biaxially-oriented polypropylene film containing particles of metal or metal oxide |
DE10022493A1 (en) * | 2000-05-09 | 2001-11-15 | Wolff Walsrode Ag | Sealable composite film with a security feature a process for its manufacture and its use as packaging material |
US20070031546A1 (en) * | 2005-08-05 | 2007-02-08 | Curwood, Inc. | Polyester and polyamide blend containing article for packaging a CO2 respiring foodstuff |
-
2007
- 2007-10-04 EP EP07405301A patent/EP2045072A1/en not_active Withdrawn
-
2008
- 2008-09-29 WO PCT/EP2008/008255 patent/WO2009043563A1/en active Application Filing
- 2008-09-29 EP EP08802692A patent/EP2197671A1/en not_active Withdrawn
- 2008-09-30 TW TW97137528A patent/TW200936465A/en unknown
Non-Patent Citations (2)
Title |
---|
None * |
See also references of WO2009043563A1 * |
Also Published As
Publication number | Publication date |
---|---|
TW200936465A (en) | 2009-09-01 |
EP2045072A1 (en) | 2009-04-08 |
WO2009043563A1 (en) | 2009-04-09 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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17P | Request for examination filed |
Effective date: 20100504 |
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AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR |
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AX | Request for extension of the european patent |
Extension state: AL BA MK RS |
|
DAX | Request for extension of the european patent (deleted) | ||
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: AMCOR FLEXIBLES KREUZLINGEN LTD. |
|
17Q | First examination report despatched |
Effective date: 20110128 |
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GRAP | Despatch of communication of intention to grant a patent |
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INTG | Intention to grant announced |
Effective date: 20161221 |
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GRAJ | Information related to disapproval of communication of intention to grant by the applicant or resumption of examination proceedings by the epo deleted |
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GRAP | Despatch of communication of intention to grant a patent |
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INTG | Intention to grant announced |
Effective date: 20170209 |
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STAA | Information on the status of an ep patent application or granted ep patent |
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18D | Application deemed to be withdrawn |
Effective date: 20170620 |