CA2510890A1 - Process for manufacturing a packaging material - Google Patents
Process for manufacturing a packaging material Download PDFInfo
- Publication number
- CA2510890A1 CA2510890A1 CA002510890A CA2510890A CA2510890A1 CA 2510890 A1 CA2510890 A1 CA 2510890A1 CA 002510890 A CA002510890 A CA 002510890A CA 2510890 A CA2510890 A CA 2510890A CA 2510890 A1 CA2510890 A1 CA 2510890A1
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- CA
- Canada
- Prior art keywords
- adhesive
- electron beam
- film
- laminate
- process according
- 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.)
- Abandoned
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Classifications
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- 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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
-
- 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
- B32B27/16—Layered products comprising a layer of synthetic resin specially treated, e.g. irradiated
-
- 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
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- 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
- B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
- B65D31/06—Bags or like containers made of paper and having structural provision for thickness of contents with rigid end walls
-
- 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
- B32B2310/00—Treatment by energy or chemical effects
- B32B2310/08—Treatment by energy or chemical effects by wave energy or particle radiation
- B32B2310/0875—Treatment by energy or chemical effects by wave energy or particle radiation using particle radiation
- B32B2310/0887—Treatment by energy or chemical effects by wave energy or particle radiation using particle radiation using electron radiation, e.g. beta-rays
-
- 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
- B32B2311/00—Metals, their alloys or their compounds
- B32B2311/24—Aluminium
-
- 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
-
- 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
- B32B2367/00—Polyesters, e.g. PET, i.e. polyethylene terephthalate
-
- 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
- B32B2553/00—Packaging equipment or accessories not otherwise provided for
-
- 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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/02—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by a sequence of laminating steps, e.g. by adding new layers at consecutive laminating stations
-
- 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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
- B32B37/16—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating
- B32B37/20—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating involving the assembly of continuous webs only
- B32B37/203—One or more of the layers being plastic
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
- Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
Abstract
A process for manufacturing a packaging material having at least two films (12, 16) or foils (14) bonded together via at least one layer of adhesive (13,15) to give a multi-layer laminate (10), is such that the adhesive layers (13,15) are of an adhesive that cures under electron beam radiation, and the laminate (10) is radiated with electrons for the purpose of curing the adhesive. The laminate is particularly suitable for the manufacture of self-standing pouches, in particular for drinks. The production of the laminate using adhesives that cure under electron beam radiation leads to a significantly reduced throughput time and to a reduction in the emission of solvents when replacing solvent-based adhesives by electron beam curing adhesives.
Description
Process for Manufacturing a Packaging Material The invention relates to a process for manufacturing a packaging material having at least two films or foils bonded together into a multilayer laminate by means of at least one layer of adhesive, whereby the adhesive layer/layers is/are cure-hardened. Also within the scope of the invention is a self-standing pouch made from the laminate.
Laminates for manufacturing self standing pouches for drinks are manufactured today in two steps using solvent-free adhesives and in one step using solvent-based adhesives.
The solvent-free process is environmentally friendly, however, requires two production steps. In a first step an aluminium foil is bonded to a printed polyethyleneterephthalate (PET) ~Im which is coated with a solvent-free poly-urethane (PUR) adhesive. After a curing time of several hours this pre-laminate can be bonded to a polyolefin-film using a solvent-based or solvent-free PUR
adhesive. The final structure is: PET-film / adhesive layer / aluminium foil /
adhesive layer / polyolefin film. After the final curing over a period of several days, the final laminate can be cut to size and dispatched to the customer.
The throughput time from receipt of order to dispatch of the finished product depends essentially on the time required for curing the PUR-adhesive The object of the invention is to provide a process of the kind described at the start by means of which the time required for curing the adhesive needed for the laminate - and with that the throughput time can be reduced in comparison with the adhesive curing time in conventional laminate manufacture.
That objective is achieved by way of the invention in that at least one adhesive layer is of an adhesive that can be cured using an electron beam and the laminate is radiated with electrons for the purpose of curing the adhesive.
Laminates for manufacturing self standing pouches for drinks are manufactured today in two steps using solvent-free adhesives and in one step using solvent-based adhesives.
The solvent-free process is environmentally friendly, however, requires two production steps. In a first step an aluminium foil is bonded to a printed polyethyleneterephthalate (PET) ~Im which is coated with a solvent-free poly-urethane (PUR) adhesive. After a curing time of several hours this pre-laminate can be bonded to a polyolefin-film using a solvent-based or solvent-free PUR
adhesive. The final structure is: PET-film / adhesive layer / aluminium foil /
adhesive layer / polyolefin film. After the final curing over a period of several days, the final laminate can be cut to size and dispatched to the customer.
The throughput time from receipt of order to dispatch of the finished product depends essentially on the time required for curing the PUR-adhesive The object of the invention is to provide a process of the kind described at the start by means of which the time required for curing the adhesive needed for the laminate - and with that the throughput time can be reduced in comparison with the adhesive curing time in conventional laminate manufacture.
That objective is achieved by way of the invention in that at least one adhesive layer is of an adhesive that can be cured using an electron beam and the laminate is radiated with electrons for the purpose of curing the adhesive.
The application of an electron beam curable adhesive results in an increase of the initial adhesion, the so called greentack, which could not be expected at once. Furthermore the application of an electron beam curable adhesive results not only in an excellent adhesion against plastic films but also against aluminium foils. In addition, an aluminium foil forms a functional barrier for electron beam curable adhesives, which is important with packaging for food, in particular beverages.
The radiation curing of plastics that can be cured with an electron beam takes place in a fraction of a second on passing through a radiation station, whereby the final bond strength has already been essentially achieved without an additional curing time when the laminate emerges from the radiation station and is coiled.
The advantage of manufacturing laminate using adhesives that can be cured by means of electron beam radiation is not only the much reduced throughput time, but also in the reduction of solvent emissions is solvent based adhesives can be replaced by adhesives that can be cured using an electron beam.
A preferred laminate exhibits three films or foils and two adhesive layers, whereby one of the adhesive layers or both adhesive layers is/are of the electron beam curing type of adhesive.
If only one of the adhesive layers is curable with an electron beam, a solvent based or solvent-free PUR-adhesive is used by way of preference for the second adhesive layer.
A preferred laminate exhibits the following structure: PET film / first adhesive layer of electron beam curable adhesive / aluminium foil / second adhesive layer of an electron beam curable adhesive / polyolefin film.
If only one of the two adhesive layers is of an electron beam curable adhesive, ~ CA 02510890 2005-06-27 a further preferred laminate exhibits the following structure: PET film /
first adhesive layer of electron beam curable adhesive / aluminium foil / second adhesive layer of a solvent based or solvent-free PUR adhesive / polyolefin film or PET film / first adhesive layer of a solvent based or solvent-free PUR
adhesive / aluminium foil / second adhesive layer of an electron beam curable adhesive / polyolefin film Preferred polyolefin films are sealable films of polyethylene (PE) or polypropylene (PP). For applications involving sterilisation or high temperature cooking, PP is preferable because of its ability to withstand high thermal loads.
The PET film may exhibit printing on it. The printing is preferably provided as counterprint on the side coated with adhesive.
The electron beam curable adhesive is preferably an adhesive on an acrylate basis.
The adhesive on an acrylate basis may contain monomers, oligomers or mixtures of monomers and oligimers as the basis. Examples of monomers are mono, di- and multifunctional acrylates such as phosphoric acid ester acrylates, hydroxy-acrylates, carboxy-acrylates, amino-acrylates, acrylic acid and acrylamide. Examples of oligomers are epoxy-acrylates, urethane-acrylates, polyester-acrylates and silicon-acrylates. The monomers and oligomers mentioned are either available commercially or can be manufactured by routine methods. The term "acrylate"(or "acryl") used here also includes "methacrylate"(or "methacryl", whereby the acrylates are preferred.
The laminate manufactured according to the invention is particularly suitable for manufacturing self-standing pouches, in particular such for drinks. Preferred is at least for the film of the laminate forming the outside of the pouch to be laminated using an adhesive layer that can be cured using an electron beam.
..
. CA 02510890 2005-06-27 Further advantages, features and details of the invention are revealed in the following description of preferred exemplified embodiments and with the aid of the drawing which shows schematically in Fig. 1 cross-section through a laminated packaging film;
Fig. 2 manufacture of a pre-laminated partial film of the packaging film shown in Fig. 1;
Fig. 3 manufacture of the packaging film in Fig. 1 from the pre-laminated partial film in Fig. 2;
Fig. 4 manufacture of the packaging film in Fig. 1 by triple lamination;
Fig. 5 another embodiment of the manufacture of the packaging film.
Fig. 1 shows a packaging film 10 for manufacturing self-standing pouches for drinks featuring a printed PET film 12 representing the outer side, an aluminium foil 14 as barrier layer and a sealable PE or PP film 16 representing the inner side. The PET film 12 is permanently bonded to the aluminium foil 14 by way of a first adhesive layer 13 and the aluminium foil 14 to the sealing film 16 by way of a second adhesive layer 15. In a typical packaging film 10 the thickness of the PET film is e.g. 12 Nm, the thickness of the aluminium foil 8 - 10 Irm and the thickness of the sealing layer 90 - 100 pm.
Fig. 2 shows the manufacture of a partial film A comprising PET film 12, adhesive layer 13 and aluminium foil 14. The printed PET film 12 is uncoiled from a first spool 18 in strip form an continuously coated with adhesive 13.
The aluminium foil 14 is uncoiled in strip form from a second spool 20 and fed to the PET film 12 coated with adhesive 13 and laminated to this to a partial film A.
The partial film A is passed through a radiation station 22 in which the adhesive layer 13 is cured by electron beam radiation within a fraction of a second.
After leaving the radiation station 22, the partial film A is coiled onto a third spool 24.
In a further production step, shown in Fig. 3, the sealing film 16 is uncoiled from a fourth spool 26 and continuously coated with adhesive 15. The partial film A
is fed from the third spool in strip form and fed to the sealing film 16 coated with adhesive 15 and laminated continuously to this to yield the packaging film 10.
The packaging film passes through a radiation station 28 in which the adhesive 5 layer 15 is cured by electron beam radiation within a fraction of a second.
On leaving the radiation station 22 the packaging film 10 is coiled onto a fifth spool 30.
The second adhesive layer 15 does not necessarily have to be an electron beam curing adhesive. Instead, it may e.g. be a conventional PUR adhesive. In that case the curing station 28 is omitted. The longer curing time required for the PUR adhesive has no influence on the process for producing the composite film 10 and simply requires a minimum storage time until it is processed further.
Another version of the manufacturing process - not shown in the drawing - is such that first a partial film B comprising sealing film 16, adhesive layer 15 and aluminium foil 14 is produced. The sealing film 16 is uncoiled from a first spool and continuously coated with adhesive 15. The aluminium foil is fed to the sealing film 16 which is coated with adhesive 15 and laminated to this to give a partial film B. The partial film B passes through a radiation station in which the adhesive a layer 15 is cured within a fraction of a second. After leaving the radiation station, the partial film is coiled onto a third spool.
In a further step the printed PET film 12 is uncoiled from a fourth spool and coated continuously with adhesive 13. The partial film B is fed from the third spool to the PET film 12 coated with adhesive 13 and laminated in a continuous manner to yield the packaging film 10. The packaging film 10 passes through a radiation station in which the adhesive layer 12 is cured by electron beam curing within a fraction of a second. On leaving the radiation station the packaging film 10 is coiled onto a fifth spool.
The first adhesive layer 13 does not necessarily have to be an electron beam curing adhesive. Instead, it may e.g. be a conventional PUR adhesive. In that case of course the radiation station is omitted. The longer curing time required by the PUR adhesive has no influence on the process for manufacturing the composite film 10 and requires simply a minimum storage time to be observed until further processing.
In a first way of manufacturing the threefold lamination shown in Fig. 4, the production of the packaging film 10 takes place by bringing together the PET
film 12, the aluminium foil 14 and the sealing film 16 and adhesively bonding via the two adhesive layers 13, 15 in one single pass. The printed PET film 12 is uncoiled from a first spool 32 and coated continuously with adhesive 13. The aluminium foil 14 is fed in strip form from a second spool 34 to the PET film coated with adhesive 13and laminated continuously to this to yield partial film A.
The sealing film 16 is uncoiled from a third spool 36 and coated continuously with adhesive 15, fed in strip form to the partial film A and laminated to it in a continuous manner yielding the packaging film 10. The sealing film 16 is uncoiled from a third spool 36 and coated with adhesive 15, fed in strip form to the partial film A and laminated to it in a continuous manner yielding the packaging film 10. The packaging film 10 passes through a radiation station 38 with adequate capacity enabling both adhesive layers 13, 15 to be cured by electron beam radiation within a fraction of a second in one single pass. On leaving the radiation station 38 the packaging film 10 is coiled onto a fourth spool 40.
In a second way of manufacturing the threefold lamination shown in Fig. 5, the production of the packaging film 10 takes place the same way as the production shown in Fig. 4 by bringing together the PET film 12, the aluminium foil 14 and the sealing film 16 and adhesiveiy bonding via the two adhesive layers 13, 15 in one single pass. The aluminium foil 14 is uncoiled from a first spool 42 and coated continuously with adhesive 15 at a first adhesive application station 17.
The sealing film 16 is fed in strip form from a second spool 44 to the aluminium foil 14 coated with adhesive 15 and laminated continuously to this to yield ~ 7 partial film B. The partial film B passes through a first radiation station 50 with adequate capacity enabling the adhesive layer 15 to be cured by electron beam radiation within a fraction of a second. The PET film 12 is uncoiled from a third spool 46 and coated continuously with adhesive 13 at a second adhesive application station 19, fed in strip form to the partial film B on leaving the first radiation station 50 and laminated to it in a continuous manner yielding the packaging film 10. The packaging film 10 passes through a second radiation station 52 with adequate capacity enabling also the adhesive layer 13 to be cured by electron beam radiation within a fraction of a second. On leaving the radiation station 52 the packaging film 10 is coiled onto a fourth spool 48.
Immediately after coiling onto the spool 40, 48 the packaging film 10 with fully cured adhesive layers 13, 15 is divided on a slitting line into commercially required breadths ready for dispatch.
It is self evident that, on bonding the films or foils in the above laminating processes, the adhesive may also be deposited on the other films or foils mentioned in the examples.
The radiation curing of plastics that can be cured with an electron beam takes place in a fraction of a second on passing through a radiation station, whereby the final bond strength has already been essentially achieved without an additional curing time when the laminate emerges from the radiation station and is coiled.
The advantage of manufacturing laminate using adhesives that can be cured by means of electron beam radiation is not only the much reduced throughput time, but also in the reduction of solvent emissions is solvent based adhesives can be replaced by adhesives that can be cured using an electron beam.
A preferred laminate exhibits three films or foils and two adhesive layers, whereby one of the adhesive layers or both adhesive layers is/are of the electron beam curing type of adhesive.
If only one of the adhesive layers is curable with an electron beam, a solvent based or solvent-free PUR-adhesive is used by way of preference for the second adhesive layer.
A preferred laminate exhibits the following structure: PET film / first adhesive layer of electron beam curable adhesive / aluminium foil / second adhesive layer of an electron beam curable adhesive / polyolefin film.
If only one of the two adhesive layers is of an electron beam curable adhesive, ~ CA 02510890 2005-06-27 a further preferred laminate exhibits the following structure: PET film /
first adhesive layer of electron beam curable adhesive / aluminium foil / second adhesive layer of a solvent based or solvent-free PUR adhesive / polyolefin film or PET film / first adhesive layer of a solvent based or solvent-free PUR
adhesive / aluminium foil / second adhesive layer of an electron beam curable adhesive / polyolefin film Preferred polyolefin films are sealable films of polyethylene (PE) or polypropylene (PP). For applications involving sterilisation or high temperature cooking, PP is preferable because of its ability to withstand high thermal loads.
The PET film may exhibit printing on it. The printing is preferably provided as counterprint on the side coated with adhesive.
The electron beam curable adhesive is preferably an adhesive on an acrylate basis.
The adhesive on an acrylate basis may contain monomers, oligomers or mixtures of monomers and oligimers as the basis. Examples of monomers are mono, di- and multifunctional acrylates such as phosphoric acid ester acrylates, hydroxy-acrylates, carboxy-acrylates, amino-acrylates, acrylic acid and acrylamide. Examples of oligomers are epoxy-acrylates, urethane-acrylates, polyester-acrylates and silicon-acrylates. The monomers and oligomers mentioned are either available commercially or can be manufactured by routine methods. The term "acrylate"(or "acryl") used here also includes "methacrylate"(or "methacryl", whereby the acrylates are preferred.
The laminate manufactured according to the invention is particularly suitable for manufacturing self-standing pouches, in particular such for drinks. Preferred is at least for the film of the laminate forming the outside of the pouch to be laminated using an adhesive layer that can be cured using an electron beam.
..
. CA 02510890 2005-06-27 Further advantages, features and details of the invention are revealed in the following description of preferred exemplified embodiments and with the aid of the drawing which shows schematically in Fig. 1 cross-section through a laminated packaging film;
Fig. 2 manufacture of a pre-laminated partial film of the packaging film shown in Fig. 1;
Fig. 3 manufacture of the packaging film in Fig. 1 from the pre-laminated partial film in Fig. 2;
Fig. 4 manufacture of the packaging film in Fig. 1 by triple lamination;
Fig. 5 another embodiment of the manufacture of the packaging film.
Fig. 1 shows a packaging film 10 for manufacturing self-standing pouches for drinks featuring a printed PET film 12 representing the outer side, an aluminium foil 14 as barrier layer and a sealable PE or PP film 16 representing the inner side. The PET film 12 is permanently bonded to the aluminium foil 14 by way of a first adhesive layer 13 and the aluminium foil 14 to the sealing film 16 by way of a second adhesive layer 15. In a typical packaging film 10 the thickness of the PET film is e.g. 12 Nm, the thickness of the aluminium foil 8 - 10 Irm and the thickness of the sealing layer 90 - 100 pm.
Fig. 2 shows the manufacture of a partial film A comprising PET film 12, adhesive layer 13 and aluminium foil 14. The printed PET film 12 is uncoiled from a first spool 18 in strip form an continuously coated with adhesive 13.
The aluminium foil 14 is uncoiled in strip form from a second spool 20 and fed to the PET film 12 coated with adhesive 13 and laminated to this to a partial film A.
The partial film A is passed through a radiation station 22 in which the adhesive layer 13 is cured by electron beam radiation within a fraction of a second.
After leaving the radiation station 22, the partial film A is coiled onto a third spool 24.
In a further production step, shown in Fig. 3, the sealing film 16 is uncoiled from a fourth spool 26 and continuously coated with adhesive 15. The partial film A
is fed from the third spool in strip form and fed to the sealing film 16 coated with adhesive 15 and laminated continuously to this to yield the packaging film 10.
The packaging film passes through a radiation station 28 in which the adhesive 5 layer 15 is cured by electron beam radiation within a fraction of a second.
On leaving the radiation station 22 the packaging film 10 is coiled onto a fifth spool 30.
The second adhesive layer 15 does not necessarily have to be an electron beam curing adhesive. Instead, it may e.g. be a conventional PUR adhesive. In that case the curing station 28 is omitted. The longer curing time required for the PUR adhesive has no influence on the process for producing the composite film 10 and simply requires a minimum storage time until it is processed further.
Another version of the manufacturing process - not shown in the drawing - is such that first a partial film B comprising sealing film 16, adhesive layer 15 and aluminium foil 14 is produced. The sealing film 16 is uncoiled from a first spool and continuously coated with adhesive 15. The aluminium foil is fed to the sealing film 16 which is coated with adhesive 15 and laminated to this to give a partial film B. The partial film B passes through a radiation station in which the adhesive a layer 15 is cured within a fraction of a second. After leaving the radiation station, the partial film is coiled onto a third spool.
In a further step the printed PET film 12 is uncoiled from a fourth spool and coated continuously with adhesive 13. The partial film B is fed from the third spool to the PET film 12 coated with adhesive 13 and laminated in a continuous manner to yield the packaging film 10. The packaging film 10 passes through a radiation station in which the adhesive layer 12 is cured by electron beam curing within a fraction of a second. On leaving the radiation station the packaging film 10 is coiled onto a fifth spool.
The first adhesive layer 13 does not necessarily have to be an electron beam curing adhesive. Instead, it may e.g. be a conventional PUR adhesive. In that case of course the radiation station is omitted. The longer curing time required by the PUR adhesive has no influence on the process for manufacturing the composite film 10 and requires simply a minimum storage time to be observed until further processing.
In a first way of manufacturing the threefold lamination shown in Fig. 4, the production of the packaging film 10 takes place by bringing together the PET
film 12, the aluminium foil 14 and the sealing film 16 and adhesively bonding via the two adhesive layers 13, 15 in one single pass. The printed PET film 12 is uncoiled from a first spool 32 and coated continuously with adhesive 13. The aluminium foil 14 is fed in strip form from a second spool 34 to the PET film coated with adhesive 13and laminated continuously to this to yield partial film A.
The sealing film 16 is uncoiled from a third spool 36 and coated continuously with adhesive 15, fed in strip form to the partial film A and laminated to it in a continuous manner yielding the packaging film 10. The sealing film 16 is uncoiled from a third spool 36 and coated with adhesive 15, fed in strip form to the partial film A and laminated to it in a continuous manner yielding the packaging film 10. The packaging film 10 passes through a radiation station 38 with adequate capacity enabling both adhesive layers 13, 15 to be cured by electron beam radiation within a fraction of a second in one single pass. On leaving the radiation station 38 the packaging film 10 is coiled onto a fourth spool 40.
In a second way of manufacturing the threefold lamination shown in Fig. 5, the production of the packaging film 10 takes place the same way as the production shown in Fig. 4 by bringing together the PET film 12, the aluminium foil 14 and the sealing film 16 and adhesiveiy bonding via the two adhesive layers 13, 15 in one single pass. The aluminium foil 14 is uncoiled from a first spool 42 and coated continuously with adhesive 15 at a first adhesive application station 17.
The sealing film 16 is fed in strip form from a second spool 44 to the aluminium foil 14 coated with adhesive 15 and laminated continuously to this to yield ~ 7 partial film B. The partial film B passes through a first radiation station 50 with adequate capacity enabling the adhesive layer 15 to be cured by electron beam radiation within a fraction of a second. The PET film 12 is uncoiled from a third spool 46 and coated continuously with adhesive 13 at a second adhesive application station 19, fed in strip form to the partial film B on leaving the first radiation station 50 and laminated to it in a continuous manner yielding the packaging film 10. The packaging film 10 passes through a second radiation station 52 with adequate capacity enabling also the adhesive layer 13 to be cured by electron beam radiation within a fraction of a second. On leaving the radiation station 52 the packaging film 10 is coiled onto a fourth spool 48.
Immediately after coiling onto the spool 40, 48 the packaging film 10 with fully cured adhesive layers 13, 15 is divided on a slitting line into commercially required breadths ready for dispatch.
It is self evident that, on bonding the films or foils in the above laminating processes, the adhesive may also be deposited on the other films or foils mentioned in the examples.
Claims (14)
1. Process for manufacturing a packaging material having at least two films (12, 16) or foils (14) bonded together via at least one layer of adhesive to give a multi-layer laminate (10), whereby the adhesive layer/layers (13,15) is/are cured, characterised in that, at least one adhesive layer (13) is of an electron beam curable adhesive and the laminate (10) is radiated with electrons for the purpose of curing the adhesive.
2. Process according to claim 1, characterised in that the laminate (10) exhibits three films (12,16) or foils (14) and two adhesive layers (13,15)
3. Process according to claim 2, characterised in that one of the adhesive layers (13) is an adhesive that cures under electron beam radiation.
4. Process according to claim 2, characterised in that both adhesive layers (13,15) are an adhesive that cures under electron beam radiation.
5. Process according to claim 3, characterised in that the first adhesive layer (13) is an adhesive that cures under electron beam radiation and the second adhesive layer (15) is a solvent-based or solvent-free PUR
adhesive.
adhesive.
6. Process according to claim 4, characterised in that the laminate (10) exhibits the following structure: PET film (12) / first adhesive layer of an electron beam curing adhesive (13) / aluminium foil (14) / second adhesive layer of an electron beam curing adhesive (15) / polyolefin film (16).
7. Process according to claim 5, characterised in that the laminate (10) exhibits the following structure: PET film (12) / first adhesive layer of an electron beam curing adhesive (13) / aluminium foil (14) / second adhesive film (15) of a solvent-based or solvent-free PUR adhesive / polyolefin film (16).
8. Process according to claim 5, characterised in that the laminate exhibits the following structure: PET film (12) / first adhesive layer of a solvent-based or solvent-free PUR adhesive (13) / aluminium foil (14) / second adhesive layer of an electron beam curing adhesive (15) / polyolefin film (16).
9. Process according to one of the claims 6 to 8, characterised in that the PET film (12) exhibits printing on the side coated with adhesive.
10. Process according to one of the claims 6 to 9, characterised in that the polyolefin film is a PE or PP film.
11. Process according to one of the claims 1 to 10, characterised in that the electron beam curing adhesive is an acrylate-based adhesive.
12. Self-standing pouch manufactured from a laminate (10) using the process according to one of the claims 1 to 10.
13. Self-standing pouch manufactured from a laminate (10) using the process according to one of the claims 2 to 10, characterised in that at least film (12) of the laminate (10) forming the outside of the pouch is laminated via an adhesive layer (13) that cures under electron beam radiation.
14. Self-standing pouch according to claim 12 or 13, characterised in that the adhesive that cures under electron beam radiation is an acrylate-based adhesive.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP04405406A EP1616696B1 (en) | 2004-07-01 | 2004-07-01 | Process of making a packaging material |
| EP04405406.2 | 2004-07-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2510890A1 true CA2510890A1 (en) | 2006-01-01 |
Family
ID=34932174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002510890A Abandoned CA2510890A1 (en) | 2004-07-01 | 2005-06-27 | Process for manufacturing a packaging material |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20060003122A1 (en) |
| EP (1) | EP1616696B1 (en) |
| AT (1) | ATE357333T1 (en) |
| CA (1) | CA2510890A1 (en) |
| DE (1) | DE502004003284D1 (en) |
| ES (1) | ES2280926T3 (en) |
Families Citing this family (32)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8057896B2 (en) * | 2005-01-06 | 2011-11-15 | Selig Sealing Products, Inc. | Pull-tab sealing member with improved heat distribution for a container |
| US8715825B2 (en) | 2005-01-06 | 2014-05-06 | Selig Sealing Products, Inc. | Two-piece pull-tab sealing member with improved heat distribution for a container |
| ES2318743T3 (en) | 2005-04-15 | 2009-05-01 | Selig Sealing Products, Inc. | STRATIFICATE OF SEALING MATERIAL. |
| ES2326754T3 (en) | 2006-03-20 | 2009-10-19 | Selig Sealing Products, Inc. | CLOSURE LAMINATE FOR CONTAINERS. |
| EP1935636B2 (en) * | 2006-12-20 | 2016-01-20 | Selig Sealing Products, Inc. | Laminate |
| US8703265B2 (en) * | 2007-03-23 | 2014-04-22 | Selig Sealing Products, Inc. | Container seal with removal tab and piercable holographic security seal |
| US9624008B2 (en) | 2007-03-23 | 2017-04-18 | Selig Sealing Products, Inc. | Container seal with removal tab and security ring seal |
| US20080233339A1 (en) * | 2007-03-23 | 2008-09-25 | Thorstensen-Woll Robert William | Laminated container seal with removal tab bound by adhesive |
| US8522990B2 (en) * | 2007-03-23 | 2013-09-03 | Selig Sealing Products, Inc. | Container seal with removal tab and holographic security ring seal |
| PT2014461E (en) * | 2007-06-22 | 2010-01-04 | Selig Sealing Products Inc | A seal for a container |
| EP2565030B1 (en) | 2007-08-24 | 2016-10-19 | Selig Sealing Products, Inc. | Covering and hygienically covered metal container |
| CA2650749C (en) * | 2008-01-30 | 2017-10-31 | Nordmeccanica S.P.A. | Machine for bonding films made of different materials in several layers, and the corresponding method |
| ITPC20080004A1 (en) * | 2008-01-30 | 2009-07-31 | Nordmeccanica Spa | MACHINE TO COUPLE FILM OF DIFFERENT MATERIALS, IN MULTI-LAYER AND RELATIVE METHOD |
| CN102149768B (en) * | 2008-07-15 | 2016-01-20 | 陶氏环球技术有限责任公司 | Cross linking membrane and the goods prepared by this cross linking membrane |
| DE102011014886B3 (en) * | 2011-03-23 | 2011-12-15 | Alfelder Kunststoffwerke Herm. Meyer Gmbh | Container e.g. bottle, for holding e.g. engine oil, has closure comprising sealing disk for closing opening, where sealing disk is provided with fluorescent pigment such that existence of pigment is detectable with sensors |
| WO2012135353A1 (en) | 2011-03-28 | 2012-10-04 | Selig Sealing Products, Inc. | Laminate structure to stabilize a dimensionally unstable layer |
| WO2012142271A1 (en) | 2011-04-12 | 2012-10-18 | The Procter & Gamble Company | Flexible barrier packaging derived from renewable resources |
| US8746484B2 (en) | 2011-06-24 | 2014-06-10 | Selig Sealing Products, Inc. | Sealing member with removable portion for exposing and forming a dispensing feature |
| BR112014022200A2 (en) | 2012-03-08 | 2019-09-24 | Selig Sealing Products Inc | Container sealing member with protected safety component and removal tab |
| US9193513B2 (en) | 2012-09-05 | 2015-11-24 | Selig Sealing Products, Inc. | Tabbed inner seal |
| US9028963B2 (en) | 2012-09-05 | 2015-05-12 | Selig Sealing Products, Inc. | Tamper evident tabbed sealing member having a foamed polymer layer |
| CA2846021C (en) | 2013-03-15 | 2021-06-08 | Selig Sealing Products, Inc. | Inner seal with an overlapping partial tab layer |
| CA2846161C (en) | 2013-03-15 | 2020-10-20 | Selig Sealing Products, Inc. | Inner seal with a sub tab layer |
| JP2015004368A (en) * | 2013-06-19 | 2015-01-08 | 大倉工業株式会社 | Manufacturing method of outer packing material for vacuum heat insulation material, manufacturing method of vacuum heat insulation material, and outer packing material for vacuum heat insulation material and vacuum heat insulation material |
| JP5704289B1 (en) * | 2013-06-24 | 2015-04-22 | 大日本印刷株式会社 | Resin composition |
| US10604315B2 (en) | 2014-02-05 | 2020-03-31 | Selig Sealing Products, Inc. | Dual aluminum tamper indicating tabbed sealing member |
| CN106687386B (en) | 2015-03-03 | 2019-12-03 | 赛利格密封产品公司 | Pulling-on piece formula seal member |
| CA3040898A1 (en) | 2016-10-28 | 2018-05-03 | Selig Sealing Products, Inc. | Single aluminum tamper indicating tabbed sealing member |
| US10934069B2 (en) | 2016-10-28 | 2021-03-02 | Selig Sealing Products, Inc. | Sealing member for use with fat containing compositions |
| US11866242B2 (en) | 2016-10-31 | 2024-01-09 | Selig Sealing Products, Inc. | Tabbed inner seal |
| CN112996728B (en) | 2018-07-09 | 2023-06-13 | 赛利格密封产品公司 | Tab seal with oversized tab |
| US11254481B2 (en) | 2018-09-11 | 2022-02-22 | Selig Sealing Products, Inc. | Enhancements for tabbed seal |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4849040A (en) * | 1978-10-10 | 1989-07-18 | Wood James R | Method and apparatus for high speed pouch and bag making |
| US4997504A (en) * | 1978-10-10 | 1991-03-05 | Wood James R | Method and apparatus for high speed pouch and bag making |
| US4566927A (en) * | 1978-10-10 | 1986-01-28 | Wood James R | Pattern bonding of webs by electron beam curing |
| US5165799A (en) * | 1978-10-10 | 1992-11-24 | Wood James R | Flexible side gusset square bottom bags |
| DE3130430A1 (en) * | 1981-07-31 | 1983-02-17 | Bayer Ag, 5090 Leverkusen | METHOD FOR GLUING FILMS |
| US4906494A (en) * | 1985-10-09 | 1990-03-06 | The Dow Chemical Company | Antistatic sheet material, package and method of making |
| DE19523530C1 (en) * | 1995-06-28 | 1996-09-26 | Fraunhofer Ges Forschung | Gas and aroma-tight packaging material based on paper or cardboard |
| NL1001657C2 (en) * | 1995-11-15 | 1997-05-21 | Avery Dennison Corp | Adhesive film. |
| HUP0104290A2 (en) * | 1998-06-19 | 2002-03-28 | Henkel Kommanditgesellschaft Auf Aktien | Adhesive which hardens in several stages |
| US7026635B2 (en) * | 1999-11-05 | 2006-04-11 | Energy Sciences | Particle beam processing apparatus and materials treatable using the apparatus |
| US7208209B1 (en) * | 2002-04-08 | 2007-04-24 | Meadwestvaco Corporation | Tear resistant container |
| EP1411077A1 (en) * | 2002-10-17 | 2004-04-21 | Rohm And Haas Company | Method for preparing a bonded composite |
-
2004
- 2004-07-01 ES ES04405406T patent/ES2280926T3/en active Active
- 2004-07-01 AT AT04405406T patent/ATE357333T1/en not_active IP Right Cessation
- 2004-07-01 EP EP04405406A patent/EP1616696B1/en not_active Not-in-force
- 2004-07-01 DE DE502004003284T patent/DE502004003284D1/en active Active
-
2005
- 2005-06-27 CA CA002510890A patent/CA2510890A1/en not_active Abandoned
- 2005-06-30 US US11/169,576 patent/US20060003122A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| US20060003122A1 (en) | 2006-01-05 |
| ES2280926T3 (en) | 2007-09-16 |
| ATE357333T1 (en) | 2007-04-15 |
| EP1616696B1 (en) | 2007-03-21 |
| DE502004003284D1 (en) | 2007-05-03 |
| EP1616696A1 (en) | 2006-01-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |