EP3997268A1 - Multifunktionales barrierepapier und verfahren zu dessen herstellung - Google Patents
Multifunktionales barrierepapier und verfahren zu dessen herstellungInfo
- Publication number
- EP3997268A1 EP3997268A1 EP20737108.9A EP20737108A EP3997268A1 EP 3997268 A1 EP3997268 A1 EP 3997268A1 EP 20737108 A EP20737108 A EP 20737108A EP 3997268 A1 EP3997268 A1 EP 3997268A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- barrier paper
- coating
- copolymers
- paper
- barrier
- 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.)
- Granted
Links
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/10—Packing paper
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
- D21H19/20—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
- D21H19/56—Macromolecular organic compounds or oligomers thereof obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
- D21H19/62—Macromolecular organic compounds or oligomers thereof obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/80—Paper comprising more than one coating
- D21H19/84—Paper comprising more than one coating on both sides of the substrate
Definitions
- the present invention relates to a multifunctional barrier paper and to a method for its production.
- Barrier papers are known from the prior art which are suitable for cold-sealing and heat-sealing applications. These papers are usually coated with a polyvinylidene chloride (PVDC) varnish, which gives the paper a high degree of impermeability to gases and (air) moisture.
- PVDC polyvinylidene chloride
- some of the barrier papers coated in this way e.g. with "Saran” from Dow Chemical
- PVDC coatings cannot be used for cold sealing - in this case due to a lack of thermal activation - additional cold seal lacquer, for example chemically based on natural rubber, is applied to the existing PVDC coating in the printing process for such applications.
- Coextruded resins are also a way of making papers more impervious to gases and moisture. However, because of their unnatural feel, such papers are also poorly accepted by the market. In addition, the recyclability of paper coated in this way is limited. So far, no solution has been found to effectively prevent fiber breaks, especially in the case of fiber breaks Production of prefabricated bags (pouch-making) with gussets or flow-pack packaging with gussets.
- the present invention is therefore based on the object of providing a barrier paper which, on the one hand, is highly impervious to gases and (air) moisture, but on the other hand is also easy to process and dispose of. In addition, it is desirable to provide a package which does not have the disadvantages set out above.
- a barrier paper according to the invention accordingly has a carrier comprising a paper which has a coating on a first side and on a second side opposite the first side at least in sections, the coatings differing on the two opposite sides.
- the barrier paper has an oxygen transfer rate (OTR) of ⁇ 10 cm 3 / m 2 * d * bar (DIN 53380-3) and a moisture vapor transmission rate (MVTR, Moisture Vapor Transmission Rate) ⁇ 15 g / m 2 * d (ISO 15106-3).
- OTR oxygen transfer rate
- MVTR Moisture Vapor Transmission Rate
- At least the first coating on the first side comprises a polyurethane (PU) lacquer.
- At least the second coating arranged on the second side comprises, in sections, a sealing layer that can be activated using the cold or industrial sealing process.
- This sealing layer is in particular a thermally activatable sealing layer and / or a cold seal coating.
- a thermally activatable sealing layer and / or a cold seal coating.
- a cold seal coating optionally arranged on the second side, it should be noted that this is often also referred to as “cold seal lacquer” in the context of this invention.
- a cold seal lacquer is a particularly preferred embodiment of a cold seal coating. If advantages of a cold seal lacquer over a cold seal coating are not explicitly stated, the terms "cold seal coating” and “cold seal lacquer” are used synonymously in the context of the description of the present invention.
- a sealing layer is understood to be a layer which can be sealed with another layer and / or against itself. In particular, such a sealing layer is thus suitable for forming an at least temporary adhesion to another layer and / or to itself.
- barrier papers known from the prior art such a barrier paper does not have the disadvantages described above. Due to the coating with a polyurethane varnish, it has a pleasant feel.
- the PU lacquer can optionally be applied so thinly that the feel of the paper is retained. Nevertheless, such a barrier paper has the required properties with regard to the low oxygen transport rate and water vapor permeability. In addition, it can be easily processed on conventional machines, especially in the packaging industry, without fiber breaks in the paper.
- the thermally activatable sealing layer or the cold seal coating enables sections of the barrier paper to be easily connected to other packaging components or to a different section of the same or a different barrier paper.
- the polyurethane paint is preferably water-based. This is beneficial in terms of handling, storage, emissions and disposal.
- the paper of the carrier has a basis weight in the range of 40-200 g / m 2 , preferably in the range of 80-150 g / m 2 , particularly preferably in the range of 85-110 g / m 2 on. Weights from this area have proven to be particularly suitable.
- these barrier papers are easy to process (especially with conventional machines) and inexpensive, on the other hand, they also have a pleasant feel, a high-quality impression and the necessary strength to ensure tear resistance, rigidity and high impermeability to gases and (air) moisture to offer.
- a so-called adhesive lacquer can optionally be applied to the side of the paper opposite the cold seal lacquer, for example in the gravure process with a layer thickness of preferably about 1 ⁇ m.
- the paper of the carrier has at least one calendered surface, preferably with a high fiber density. It is particularly advantageous that the gloss and smoothness of the paper are increased.
- the paper is particularly preferably calendered at a temperature in the range between 150 and 250 ° C, preferably between 180 and 230 ° C, particularly preferably between 200 and 220 ° C.
- the paper is calendered at a pressure in the range between 200 and 50,000 ° kPas, preferably between 300 and 30,000 ° kPas, particularly preferably between 1000 and 50,000 ° kPas. Papers that are calendered in this way have proven to be particularly advantageous because, on the one hand, they have the desired color absorption and feel, but on the other hand they can also bind the additional surface coating sufficiently firmly and permanently.
- the lacquer of the first coating comprises the polyurethane in semicrystalline form on the first side.
- a semicrystalline polyurethane allows the lacquer to be reworked thermally, for example additionally hardened. This can offer many advantages, for example the feel or the visual appearance (e.g. gloss or reflectivity) or further reduce the oxygen transport rate and the water vapor permeability, which is particularly advantageous in the field of the packaging industry for the storage stability of the barrier paper wrapped in such a barrier paper Product can be.
- the first coating on the first side also comprises a polyvinyl alcohol, which is preferably present as a homo- or co-polymer.
- the coating on the first side comprises an ethylene-vinyl laurate-alcohol copolymer.
- the first coating comprises a polymer coating consisting of isoprene, styrene-isoprene, styrene-ethylene-butadiene latices, styrene-ethylene-propylene latices, styrene-butadiene latices and / or (alkylated / Arylated) acrylate and / or (alkylated / arylated) styrene-acrylate copolymers and / or olefinic copolymers and / or ethylene-vinyl acetate copolymers or mixtures thereof.
- the first and / or second coating is at least partially spaced from the carrier by an intermediate layer.
- the intermediate layer comprises a dispersion of alkylated ketene dimers and / or vinylsilane derivatives of different molecular weights, or mixtures thereof.
- the first coating on the first side additionally or alternatively comprises at least one polymer selected from a group consisting of one or more copolymers of a polyester and aliphatic epoxides, one or more copolymers of a (alkylated / Arylated) acrylate and aliphatic epoxides, one or more homopolymers or copolymers of polyvinylpyrolidone, one or more cycloolefin copolymers (COC), particularly preferably based on norbornene polymers (COP) or based on norbornene-ethylene copolymers (COC ), (partially or completely hydrogenated), polyamides, cellulose derivatives, one or more soluble polycarbonate copolymers individually or in a combination of several of the polymers contained in the group and preferably a crosslinking component from the group of isocyanates, amines, Includes anhydrides, oxazolines, azeridines, reactive silane, ethylenes, a cross
- the (co) polymers contained in this group have shown that they are particularly suitable for equipping the paper of the carrier with the properties desired for the barrier paper.
- the sealability, the feel and the low oxygen transport rate and the water vapor permeability can be influenced advantageously.
- the first and / or second coating contain inorganic solids.
- Alumina-based solids and / or sheet silicates are particularly preferred.
- the first coating contains mica particles. Surprisingly, it has been shown that these inorganic particles are particularly advantageous, in particular for reducing the water vapor permeability.
- the barrier paper has at least 10% pigment volume concentration in the coating, such an inorganic solid. It has been shown that with this amount of inorganic solids a particularly high oxygen and water vapor barrier can be achieved.
- the carrier or the (carrier) paper is provided with a primer. It is particularly advantageous if the primer is applied to the carrier as a (not necessarily closed) layer - preferably directly - and the first coating is only arranged over it.
- the primer of 0.5-5 g / m 2 , preferably 1-4 g / m 2 , preferably 1.5-3 g / m 2 , in particular preferably of about 2 g / m 2, in particular with regard to the effect and cost efficiency, have proven advantageous.
- the quantities given above relate to the dry weight of the primer, regardless of the type of application. To simplify homogeneous application, it would be conceivable, in particular, to soak in a solution or suspension of the primer or to brush or spray on such a solution or suspension.
- primer compositions which comprise substances which are selected individually or in a combination of several substances from a group consisting of one or more homopolymers or copolymers polyvinyl alcohols, one or more ethylene-vinyl laurate-alcohol copolymers, one or more homopolymers - Or copolymers of polyvinylpyrolidone, one or more copolymers of a polyester and an aliphatic epoxide, one or more copolymers of an (alkylated / arylated) acrylate and an aliphatic epoxy, one or more (alkylated / arylated) acrylates, polyamides, cellulose derivatives , one or more cross-linked polyurethanes.
- the (co) polymers contained in this group have shown that they are particularly suitable as primers to positively influence the oxygen transport rate and the water vapor permeability in the barrier paper, in particular to reduce it.
- the barrier paper has a second coating on the second side, which provides a heat-sealing property.
- this coating enables the thermally activated sealing of the barrier paper.
- An embodiment in which the coating comprises a heat-sealing lacquer on the second side has proven to be particularly advantageous, in particular for simple processing in the packaging industry.
- An amount of the second coating on the second side of the barrier paper in a range of 2-30 g / m 2 , preferably 5-20 g / m 2 , preferably of 8-15 g / m 2 , particularly preferably about 10 g / m 2 .
- These quantities have been shown to be particularly advantageous, on the one hand to ensure or support the required water vapor and oxygen tightness, but on the other hand also to offer sufficient strength of a sealing layer and / or to shield a product wrapped in the barrier paper from the others To ensure components of the barrier paper.
- the second coating on the second side of a barrier paper comprises a polyolefin-containing lacquer.
- lacquers especially low-density polyethylene (LDPE) -containing lacquers or LDPE-like lacquers ("LDPE-like lacquer", which are to be understood in the sense of lacquers containing polyethylene co / terpolymers), are preferred due to their sealability and the possibility of processing them with conventional machines.
- a cold seal varnish preferably based on natural latex
- Suitable application quantities are 1-10 g / m 2 , preferably 2-5 g / m 2 , particularly preferably approx. 4 g / m 2 dry application weight.
- the second coating on the second side of the barrier paper in the sealed state has an adhesive force to itself and / or to another layer of an identical barrier paper of at least 1.5 N / 15 mm, preferably at least 3 N / 15 mm , particularly preferably at least 5 N / 15 mm.
- a sealed state is understood to mean a state in which at least one second coating on the second side of a barrier paper has been thermally activated and has been connected to a section of a barrier paper. The thermal activation takes place preferably at a temperature of at least 80.degree. C., preferably at least 90.degree. C., preferably at least 100.degree.
- the so The strength achieved is preferably so high that the tensile load on the barrier paper leads to tearing of the paper backing of the barrier paper and the sealed contact point of the barrier paper sections remains intact.
- sealing is preferably carried out at room temperature with a sealing pressure of at least 2 bar.
- the adhesive force against itself is at least 1.5N / 15mm.
- the second coating on the second side of a barrier paper is a hydroxyl-functionalized one , acrylate-containing copolymer.
- the impermeability to individual or a large number of flavors and / or fats can be reduced additionally or alternatively also by silica, which is contained in the second coating on the second side of the barrier paper.
- silica As an amount of preferably particles with an average particle size (d 5 o, Sedigraph) as in the range from 0.1 to 30 pm vorlie constricting silica has an area of 1-20 g / m 2, preferably 2-10 g / m 2 , in particular preferably from about 3 to 5 g / m 2 , shown to be particularly advantageous in terms of flavor sealing in packaging.
- the second coating on the second side of a barrier paper in the sealed state has an adhesive force to itself and / or to another layer of an identical barrier paper, which is at most 7 N / 15 mm, preferably at most 5 N / 15 mm, particularly preferably at most 3 N / 15 mm.
- the sealed state is also understood to mean a state in which at least one second coating on the second side of a barrier paper has been thermally activated and has been connected to a section of a barrier paper.
- the thermal activation takes place here too preferably at a temperature of at least 80 ° C, preferably at least 90 ° C, preferably at least 100 ° C or via cold sealing with activation of the applied cold seal lacquer by means of pressure applied to the barrier paper at room temperature.
- An at least locally low adhesive force is particularly advantageous if sections are provided in a package that are easy to access for the user to ensure the product enclosed by the packaging.
- Such packagings are, for example, chips or candy bags, which should be easy to open by a user, but should not lose their property as a bag. The destruction of sections of the packaging apart from the opening section (s) provided is therefore undesirable.
- the second coating on the second side of the barrier paper preferably comprises an ethylene-methacrylic acid copolymer. Amounts in the range from 2 to 20 g / m 2 , preferably from 3 to 10 g / m 2 , preferably from, are particularly preferred
- This layer preferably comprises an inorganic solid.
- this layer contains clay, talc or silica. Surprisingly, it has been shown that these are advantageous on organic particles, in particular for reducing the aroma permeability of the barrier paper.
- these particles which preferably has a mean particle size (d 5 o, Sedigraph) in the range from 0.1 to 30 pm comprise, comprises, a range of 1-20 g / m 2, preferably from 2 - 10 g / m 2 , particularly preferred of about 3 - 7 g / m 2 , in particular about 5 g / m 2, have proven to be particularly advantageous in terms of flavor sealing in packaging.
- the additional layer on the second side of the barrier paper is arranged between the carrier and the above-described coating on the second side of the barrier paper. Accordingly, it is not absolutely necessary for the coating on the second side of the barrier paper to contact the carrier (over the entire surface). It is possible and advantageous for some applications that a further layer is arranged at least in sections between the coating on the second side of the barrier paper and the carrier.
- the additional layer can preferably be thermally activated and thus preferably - like the second coating on the second side of the barrier paper - be part of a thermally activated sealing layer. This can also be painted over an applied printing ink.
- the breaking and / or tear resistance of the carrier is increased.
- polyurethanes and / or polyamides are particularly suitable for this purpose. These are preferably applied to the carrier of the barrier paper, particularly preferably in solution, dispersion or suspension as a lacquer on the carrier surface (s). Regardless of the selection of the polymers, it is particularly preferred that the polymers are applied to both sides of the carrier. Aided by the porosity of the carrier, the poly mers can penetrate the paper and reinforce the crosslinking of the paper fibers.
- the lacquer film on the paper surface physically counteracts a paper tear during the packaging process through the mechanical build-up of opposing forces when the paper is subjected to tensile stress.
- the polymers can also prevent paper fibers from breaking and / or reduce the number of breaks that occur under stress. This is particularly advantageous in the (machine) treatment of the barrier paper, since strong mechanical loads can occur locally, for example during the packaging process or the production of bags.
- amounts of the polymer have in the range of 0.5-20 g / m 2 , preferably 1-10 g / m 2, have proven advantageous. These quantities relate to the dry weight of the polymer.
- barrier paper it is provided that this has a self-sealing (cold-seal) layer on at least some sections on one side.
- This cold seal layer is preferably net angeord on the second side of the barrier paper. This can be achieved, for example, by an (additional) cold seal coating, in particular a cold seal lacquer. This is advantageous, for example, when the barrier paper is used for flow pack packaging, in particular for packaging chocolate.
- the cold seal lacquer covers at least some sections of a heat seal lacquer with a layer thickness of, for example, 2 ⁇ m.
- this has a surface coating of reduced adhesive force on at least some sections on one side.
- This surface coating is preferably arranged on the first side of the barrier paper. This can be achieved, for example, by an (additional) antiblocking and / or anticling (or non-stick) coating. This is advantageous, for example, in order to avoid the undesired sticking of a cold seal coating to sections of the barrier paper.
- the anti-blocking and / or non-stick coating covers at least some sections of the coating on the first side of the barrier paper.
- the application quantities are preferably chosen so that they form a layer thickness of 0.01 to 0.2 micrometers, preferably 0.02 to 0.1 micrometers.
- a method in a high vacuum is preferably selected for applying such a coating, also to paper substrates.
- this can be designed as a laminate.
- several of the barrier papers described above can be glued to one another, for example to form a duplex structure. This is for example advantageous if a stronger, more stable or high-quality packaging is desired.
- a laminate of a barrier paper does not necessarily have to have all of the above-mentioned coatings (multiple).
- the carrier itself is a laminate and this laminate has one of the coatings described above as a carrier on one side.
- a laminate of several papers is advantageous for this.
- These papers can have identical or different properties.
- it is preferred that at least two layers of paper are glued to one another, preferably using at least one polymer, at least in sections.
- casein-based and / or synthetic adhesives have proven to be advantageous as polymers for this purpose. Gluing is preferably done using the wet or dry lamination process.
- a flexible packaging which comprises a barrier paper according to one of the preceding claims.
- Such a method is characterized in that a carrier comprising a paper is provided, which is provided with a coating at least in sections on a first side and on a second side opposite the first side, the coatings being on the two opposite sides differentiate.
- a thermally activatable second coating preferably a sealing layer, is applied at least on the second side and a first coating comprising a semicrystalline polyurethane (PU) lacquer is applied at least on the first side.
- PU semicrystalline polyurethane
- the amounts of these coatings are selected so that after these coatings have dried, the barrier paper has an oxygen transfer rate (OTR) of ⁇ 10 cm 3 / m 2 * d * bar, measured at 23 ° C / 75% ambient humidity and a Water vapor permeability (MVTR, Moisture Vapor Transmission Rate) ⁇ 15 g / m 2 * d, measured at 23 ° C / 85% and 0% (on the sensor side) ambient humidity.
- OTR oxygen transfer rate
- MVTR Water vapor permeability
- the application of the first coating containing the polyurethane lacquer can, on the one hand, be a decisive factor Contribution to the reduction of the oxygen transport rate and the water vapor permeability can be made, however, in addition, the pleasant feel of a (packaging) product manufactured according to this method, which is desired in the packaging industry, can be achieved.
- the thickness of the first and second coatings can be chosen to be variable and in particular the PU lacquer of the first coating can be applied so thinly that the feel of the paper is retained.
- the thermally activatable sealing layer or the second coating enables the simple connection of sections of the barrier paper to other packaging components or to another section of the same or to another barrier paper.
- the paper of the carrier is preferably provided with a basis weight in the range from 40-200 g / m 2 , preferably in the range from 80-150 g / m 2 , particularly preferably in the range from 85-1 10 g / m 2 , since basis weights from this area as particularly suitable in terms of the required strength and resilience on the one hand, ease of processing (especially with conventional machines) and low costs on the other hand have shown ben.
- such a barrier paper is printed with an optically recognizable pattern at least on the first side with respect to the carrier. This can be done before, during or after the PU lacquer is applied.
- the optically recognizable color adheres permanently to the paper - especially if it is arranged between the carrier and PU lacquer - so that the desired visual impression, which is particularly important in the packaging industry for the recognition of a branded product, can be guaranteed in the long term.
- the barrier paper is arranged at least in sections around a product to be packaged and then the thermally activatable sealing layer is activated in order to connect sections of the barrier paper with the product or to join other sections of the packaging (possibly from sections of the same barrier paper).
- This variant of the method enables a packaging to be closed particularly easily.
- the barrier paper is subjected to at least one cutting process.
- the barrier paper can be adapted to the dimensions of a product to be packaged.
- This at least one cutting process can take place (independently of any further cutting processes) before or after (in sections) enclosing the product to be packaged.
- an endless tube of the barrier paper is closed on one side by thermal activation and separated from the rest of the tube by a cutting process and then a product is poured into the hose section closed on one side. The hose could then be cut off on the packaging side that is still open and then closed.
- FIG. 1 shows a schematic representation of a barrier paper according to the invention
- FIG. 2 shows an application of a barrier paper as a packaging bag.
- FIG. 1 shows a schematic representation of a barrier paper 1 according to the invention.
- This barrier paper 1 has a carrier 2, which has two opposite sides 3 and 4. Each of these sides has a coating 5, 6, these coatings 5, 6 differing.
- a second coating 6 is preferably suitable for forming a thermally activatable connection to a surface of another barrier paper or the same barrier paper 1.
- At least one of the coatings 5, 6 is selected such that the barrier paper 1 has an oxygen transport rate (OTR, Oxygen Transfer rate) of ⁇ 10 cm 3 / m 2 * d * bar and a water vapor permeability (MVTR, Moisture Vapor Transmission Rate) of ⁇ 15 g / m 2 * d.
- At least the first coating 5 arranged on the first side 3 comprises a polyurethane lacquer.
- one or more further layers can be present in the barrier paper.
- coatings can be, for example, a release paint, a color mixture, primer, and / or metallization.
- Such layers can (independently of one another) each be present over the entire surface or only in sections. Layers which are applied, for example, as part of a surface pretreatment of the carrier, are particularly advantageous. These can, for example, serve to reduce the porosity.
- a primer can be advantageous for some applications, which primer can be arranged (independently of one another) on the first and / or the second side of the carrier.
- one layer is a full-surface industrial seal lacquer, a partial industrial seal lacquer or a partial cold seal.
- a release lacquer is arranged on the side of the first coating facing away from the carrier.
- FIG. 2 shows an application example for a barrier paper 1 as described above.
- the barrier paper 1 is shaped into a packaging bag 7.
- at least sections 8 of the second coating 6 of the barrier paper 1 are activated and sealed with respect to other sections of the barrier paper 1.
- the adhesive forces occurring in the sealing area 8 are sufficient to protect a product (not shown) contained in such a pack 7 over a longer period of time, which preferably extends over one to several weeks, against at least a selection of environmental influences that are harmful to the product protect.
- a packaging 7 is particularly suitable for foodstuffs, which on the one hand should be protected from harmful environmental influences, but the packaging 7 should also be easy to open without damaging the product. It would be conceivable, for example, to use such a packaging 7 for confectionery, such as caramel or chewy sweets.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Laminated Bodies (AREA)
- Wrappers (AREA)
- Packages (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019118425.8A DE102019118425A1 (de) | 2019-07-08 | 2019-07-08 | Multifunktionales Barrierepapier und Verfahren zu dessen Herstellung |
| PCT/EP2020/068170 WO2021004818A1 (de) | 2019-07-08 | 2020-06-26 | Multifunktionales barrierepapier und verfahren zu dessen herstellung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3997268A1 true EP3997268A1 (de) | 2022-05-18 |
| EP3997268B1 EP3997268B1 (de) | 2023-11-15 |
Family
ID=71523115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20737108.9A Active EP3997268B1 (de) | 2019-07-08 | 2020-06-26 | Multifunktionales barrierepapier und verfahren zu dessen herstellung |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP3997268B1 (de) |
| DE (1) | DE102019118425A1 (de) |
| ES (1) | ES2972543T3 (de) |
| PL (1) | PL3997268T3 (de) |
| WO (1) | WO2021004818A1 (de) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12269659B2 (en) | 2019-11-29 | 2025-04-08 | Selig Sealing Products, Inc. | Foil free tabbed seal |
| US12377630B2 (en) | 2020-05-29 | 2025-08-05 | Selig Sealing Products, Inc. | Dispensing liner |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102022103957A1 (de) * | 2022-02-18 | 2023-08-24 | Constantia Pirk Gmbh & Co. Kg | Verbund zum Verpacken von Nahrungsmitteln und Verfahren zu dessen Herstellung |
| DE102022106886A1 (de) | 2022-03-23 | 2023-09-28 | delsci GmbH | Verpackungsmaterial für lebensmittel mit innenliegender barriereschicht |
| EP4411064A1 (de) | 2023-02-06 | 2024-08-07 | Huhtamäki Oyj | Verfahren zur herstellung eines offenen behälters für milch-, pflanzenbasierte lebensmittel und/oder gefrorene lebensmittel |
| DE102023103298A1 (de) | 2023-02-10 | 2024-08-14 | Huhtamaki Flexible Packaging Germany Gmbh & Co. Kg | Metallisiertes papierbasiertes Verpackungslagenmaterial mit wenigstens zwei Barriereschichten aus einem Vinylalkohol-Polymer |
| DE102024109020A1 (de) * | 2024-03-28 | 2025-10-02 | Mayr-Melnhof Karton Ag | Verfahren zum Herstellen eines beschichteten Verpackungsmaterials |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0972635A1 (de) | 1998-07-17 | 2000-01-19 | Minnesota Mining And Manufacturing Company | Mehrschichtiges Papier zur Verwendung in Verpackung von Lebensmitteln |
| JP4524463B2 (ja) | 1999-07-27 | 2010-08-18 | 三井化学株式会社 | ガスバリア性ポリウレタン樹脂及びこれを含むガスバリア性フィルム |
| JP2004042959A (ja) | 2002-07-11 | 2004-02-12 | Dainippon Printing Co Ltd | レトルト処理用紙容器およびそれを使用したレトルト処理包装体 |
| DE102006040921A1 (de) | 2006-08-31 | 2008-03-13 | Papier-Mettler Inhaber Michael Mettler | Verbundpapier sowie Beutel für Lebensmittel, insbesondere für vorgebackene Backwaren, enthaltend das Verbundpapier, und ein Verfahren zur Herstellung des Beutels |
| US20110027601A1 (en) | 2008-04-30 | 2011-02-03 | Meadwestvaco Corporation | Water based barrier coating compositions |
| DE102009004817A1 (de) | 2009-01-13 | 2010-07-15 | Huhtamäki Oyj | Verpackung |
| DE202011051309U1 (de) | 2011-09-15 | 2012-12-17 | Cofresco Frischhalteprodukte Gmbh & Co. Kg | Beutel für die Aufbewahrung und Zubereitung von Lebensmitteln |
| US20130101855A1 (en) * | 2011-10-20 | 2013-04-25 | Frito-Lay North America, Inc. | Barrier paper packaging and process for its production |
| WO2013098025A1 (en) | 2011-12-29 | 2013-07-04 | Tetra Laval Holdings & Finance S.A. | A packaging laminate for a packaging container, as well as packaging containers produced from the packaging laminate |
| US20150147544A1 (en) | 2013-11-25 | 2015-05-28 | Gerald Minsky | Tear-resistant paperboard laminate |
| FR3024467B1 (fr) * | 2014-07-30 | 2019-05-17 | Munksjö Oyj | Papier barriere thermoscellant |
| WO2017005597A1 (en) | 2015-07-03 | 2017-01-12 | Amcor Flexibles Kreuzlingen | Flexible multilayer packaging film with ultra-high barrier properties |
| JP2017190544A (ja) * | 2016-04-15 | 2017-10-19 | 凸版印刷株式会社 | バリア紙、紙カップ |
| JP6870218B2 (ja) | 2016-06-13 | 2021-05-12 | 凸版印刷株式会社 | 紙バリア積層体および成形容器 |
| CA2940370A1 (en) * | 2016-08-25 | 2018-02-25 | Cascades Sonoco, Inc. | Coated paper-based substrate for containers and process for making the same |
| CN109311299B (zh) * | 2016-09-30 | 2023-05-09 | 日本制纸株式会社 | 纸制阻隔材料 |
| BE1025074B1 (nl) | 2017-03-24 | 2018-10-23 | Ace Packaging Nv | Broodzak en werkwijze voor het vervaardigen ervan |
| KR101968044B1 (ko) | 2018-07-09 | 2019-06-19 | 한솔제지 주식회사 | 수분 및 가스 차단성 종이의 제조방법 |
| DE102019114197A1 (de) | 2019-05-27 | 2020-12-03 | Mitsubishi Hitec Paper Europe Gmbh | Aufzeichnungsmaterial umfassend eine bedruckbare Aufzeichnungsschicht, insbesondere eine bedruckbare Glanz- oder Hochglanzschicht, und eine Barriereschicht sowie Herstellungsverfahren und Verwendungen hierfür |
-
2019
- 2019-07-08 DE DE102019118425.8A patent/DE102019118425A1/de active Pending
-
2020
- 2020-06-26 PL PL20737108.9T patent/PL3997268T3/pl unknown
- 2020-06-26 ES ES20737108T patent/ES2972543T3/es active Active
- 2020-06-26 EP EP20737108.9A patent/EP3997268B1/de active Active
- 2020-06-26 WO PCT/EP2020/068170 patent/WO2021004818A1/de not_active Ceased
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12269659B2 (en) | 2019-11-29 | 2025-04-08 | Selig Sealing Products, Inc. | Foil free tabbed seal |
| US12377630B2 (en) | 2020-05-29 | 2025-08-05 | Selig Sealing Products, Inc. | Dispensing liner |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3997268B1 (de) | 2023-11-15 |
| DE102019118425A1 (de) | 2021-01-14 |
| PL3997268T3 (pl) | 2024-04-08 |
| WO2021004818A1 (de) | 2021-01-14 |
| ES2972543T3 (es) | 2024-06-13 |
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