WO2012028202A1 - Film multicouche scellable pour matériaux d'emballage - Google Patents

Film multicouche scellable pour matériaux d'emballage Download PDF

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Publication number
WO2012028202A1
WO2012028202A1 PCT/EP2010/062958 EP2010062958W WO2012028202A1 WO 2012028202 A1 WO2012028202 A1 WO 2012028202A1 EP 2010062958 W EP2010062958 W EP 2010062958W WO 2012028202 A1 WO2012028202 A1 WO 2012028202A1
Authority
WO
WIPO (PCT)
Prior art keywords
film
layer
area
film according
packaging
Prior art date
Application number
PCT/EP2010/062958
Other languages
English (en)
Inventor
Gustavo Lombardi
Original Assignee
Henkel Ag & Co. Kgaa
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Henkel Ag & Co. Kgaa filed Critical Henkel Ag & Co. Kgaa
Priority to PCT/EP2010/062958 priority Critical patent/WO2012028202A1/fr
Publication of WO2012028202A1 publication Critical patent/WO2012028202A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/38—Packaging materials of special type or form
    • B65D65/40—Applications of laminates for particular packaging purposes
    • 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
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
    • 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/26—Polymeric coating
    • 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
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/31—Heat sealable
    • 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
    • B32B2307/75—Printability
    • 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
    • B32B2310/14—Corona, ionisation, electrical discharge, plasma treatment
    • 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
    • B32B2439/70—Food packaging

Definitions

  • the invention relates to a multi-layer film which is sealable.
  • This film can be used as packaging material for food packaging products.
  • Printed plastic films are in wide use for food packaging. These films are typically flexible muti-layer films one outside of the film maybe printed, the other inner side of the film has some restrictions due to the contact with a package food. In a typical packaging process the film has to be sealed against itself or against a different film material which may include films which have been laminated to the first film. One task such film has to fulfill is to act as barrier against compounds of the environment, for example oxygen, water, other gas components which may negatively influence taste, composition or color of the ingredients inside the packaging.
  • EP 1698480 discloses a packaged food product comprising a film material having a printed side and an opposing food side, whereby as additional layer on the printed side a radiation-cured varnish is applied.
  • this multilayer film contains a heat sealable layer on the inner side to the product. This side is sealed against itself by heat seal jaws applied to the outer side being the side of the radiation curable varnish. So a so called A to A sealing is disclosed. It is further disclosed that for an improvement of the ability to be printed it is useful to apply a surface treatment on this side.
  • EP 1286841 discloses a packaging material comprising a substrate composed of a thermoplastic material having a cold seal coating on the inner side of the substrate and an energy cured coating at the outer side of the substrate. Such package is sealed by heat seal jaws applied to the outer side of the substrate film. Consequently A to A sealing is disclosed.
  • EP 1231052 discloses a packaging material the substrate being a sheet of a plastic material having a cold seal coating on the inner side of the substrate and an energy cured coating at the outer side.
  • a pre-treatment of the surface is required. This is typically performed by corona treatment, a plasma treatment or a flame treatment. After such step this side of the film can be printed. It is known that such corona pre-treated films are difficult to seal against other surfaces. Even if a heat seal material is applied on the other substrate and sealed against this pretreated surface it is found, that under mechanical stress delamina- ting will occur on the pretreated side of the film. It is also known, that an additional cold seal coating on the inner side of the film does not improve a sealing to a pretreated surface. This negative effect can be observed also if this pre-treated surface is covered by a printed image.
  • a sealable layer is part of the inner side of such film it is known to seal such sides against a similar side of a film so an A to A sealing is possible.
  • This sealing process has as a result, that part of the film is not directly used or packaging purposes, but it is required for the sealing of the packaging.
  • Such area used for sealing a package A to A (so called fin sealing) leads to a higher consumption of packaging material. Additionally such fin sealing provides packaging which has a protruding part. This may lead to additional efforts in automatic handling processes. So with the known composition of films useful for packaging purposes an A to B sealing is difficult to achieve. The bonding of a sealable side with other surfaces of a film will not provide a bond which is stable under changing storage conditions like temperature, humidity or handling.
  • a multilayer film for the manufacture of packaging comprising a film of a core substrate material, having an inner side consisting of a heat sealable thermoplastic polymer, an outer side which is subjected to a pre-treatment and thereafter covered with a printed image layer, the outer surface of this printed image layer being covered with an outer layer wherein such outer layer consists of a first area coated with a coating layer being cured by radiation curing, and separate from this area a second area which is covered by a layer of a heat seal lacquer.
  • the core substrate material is a polymeric film which provides the mechanical stability of such multilayer film.
  • the materials for this polymeric film are generally known.
  • Such films include at least one layer consisting of thermoplastic materials. They may include one or more layers of different polymers and optionally inorganic materials.
  • suitable thermoplastic polymers include polyesters, like PET; polyolefins, like PE, LDPE, LLDPE, MDPE, HDPE, PP, a-olefin copolymers, OPP, BOPP; polyamides, like OPA; vinyl acetate polymers, like EVA; poly(meth)acrylates or PVC.
  • the substrate films shall comprise one layer of thermoplastic materials, preferably selected from polypropylene, polyethylene, polyamide or polyesters.
  • thermoplastic films Most preferred are oriented thermoplastic films. Additionally in case of multilayer films such film may additionally include other layers from different or equal composition, including also metallic films, like Al foils or metallized polymer films, or films treated with SiOx-layers.
  • substrate film material provides for example the mechanical properties to the final multilayer film.
  • a mono layer of shall constitute the core substrate material of the final multilayer film, in another embodiment the core substrate material shall be covered on one or both sides with other layers according to the invention.
  • the substrate film shall include at least one barrier layer.
  • Barrier layers are known per se, they shall prevent low molecular weight substances to migrate and diffuse through the film.
  • the layers can be incorporated in the multi-layer film by different ways.
  • One embodiment of the invention uses substrate films which have been treated by processes forming a metallic layer or a SiOx layer on one side. These layers are very thin and show a good adherence to the substrate film.
  • a different embodiment uses a substrate film which will be bonded to a metal foil by an adhesive. Such process of laminating metallic foils to substrate films is known to the person skilled in the art.
  • Adhesives for such purpose can be selected from UV curable adhesive, reactive adhesives like polyurethanes, solvent borne adhesives or others.
  • such barrier layer is not incorporated as separate film, but the substrate film shall be coated on the outer side with a coating which may improve barrier properties.
  • a coating which may improve barrier properties.
  • Such coating material may be selected from the group of radiation curable coatings.
  • the core substrate film additionally comprises at one side, which constitutes normally the inner side, a surface comprising a thermoplastic polymer which is sealable.
  • Inner side shall have the meaning being the surface towards a packaged product.
  • the thermoplastic core substrate itself is sealable, it is possible that a sealable surface is pre- pared by additives forming such surface or it is possible that an additional layer of a thermoplastic polymer is applied.
  • Such polymers may have preferably a softening point lower than the thermoplastic materials used as substrate films.
  • the inner surface is selected from EVA, PP or PE.
  • Such layer can be manufactured by different methods. For example it is possible to apply such layer as liquid coating, forming a film on one side of the core substrate film by drying.
  • thermoplastic film forming material additives which support the sealing properties especially the heat sealing properties of the polymer.
  • Such additives may form a surface layer which is prepared for sealing.
  • the inner layer is formed by co- extrusion together with the substrate film.
  • Such layer is sealable by the selection of polymers.
  • suitable multilayer films suitable as core substrate materials comprising a sealable inner surface are manufactured for example by co-extrusion, by vacuum metallization or by joining the layers by an adhesive.
  • Examples of such films are PE/metallized PET/PE, PE/PET/PE, PE/metallized OPP/PE, OPP/metallized OPP/PE, PE/OPA/PE, OPP/coex. PE, PET/PP/PE, PET/ coex. PP,
  • thermoplastic polymers can be selected by a person skilled in the art according to the intended packaged good.
  • One embodiment uses only a PE film as core substrate material.
  • the multilayer film shall consist of two or three layers, including an OPP or OPP/ metallized film and a sealable layer.
  • the thickness of the layers typically comprises 5 to 300 ⁇ each. This can be varied according to the purpose of the layer and the polymer selected. Examples of such films are OPP films used between 10 to 80 ⁇ , PE layers used between 20 to 300 ⁇ , PA layers used between 30 to 300 ⁇ , metallic layers less than 50 ⁇ , a seal layer used between 5 to 300 ⁇ .
  • thermoplastic core substrate film is subjected to a pretreatment at the outer surface.
  • pretreatment processes are known to improve adhesion of a surface of plastic materials to other materials, for example paints, adhesives or other layers, by modifying the surface of a film.
  • Such processes include, for example corona treatment, oxidizing treatment, flame pretreatment or plasma treatment.
  • This pretreatment provides a basis for a good adhesion of following layers, it is applied at the whole outer surface of the substrate film. Means and devices for such pretreatment are known.
  • the multilayer film can be printed, coated or bonded with an additional layer or film.
  • a printing layer is applied.
  • the printing layer can be applied by commercially available printing inks. Methods and technology to apply such ink are known.
  • the image can be applied to the whole surface it is also possible to print only parts of the outer surface.
  • a radiation curable coating will be applied to predetermined parts of the side.
  • the coating is made from a radiation- curable overprint coating system.
  • a radiation energy source such as ultra-violet (UV) light or electron beam (EB) radiation.
  • UV ultra-violet
  • EB electron beam
  • the reactants of the radiation-curable overprint coating will polymerize by forming new chemical bonds and provide a thin polymeric layer.
  • coating material a wide range of radiation curable coatings can be used. They may contain organic solvents or preferably they are substantially solvent free.
  • the coating material shall be applied in liquid form at a temperature from 20 to 50°C and will be subject to a radiation curing process.
  • Radiation-curable coatings may include i) monomers, ii) oligomers, iii) prepoly- mers, which contain reactive groups and optionally iv) other additives. Examples of such components are such monomers, oligomers or polymers which shall each contain one or more unsaturated double bonds. These unsaturated double bonds shall crosslink under influence of radiation. As additives other non reactive diluents, photoinitiators, adhesion promotors, colorants, pigments, resins and/or stabilizers can be included in the composition. Radiation-curable coatings curable by EB radiation do not require a photoinitiator, and may therefore be free of photoini- tiator. Preferably, the overprint coating is transparent. The coating material can be applied in liquid form or in molten form. The viscosity is selected so that a thin coating layer can be obtained.
  • UV light crosslinking by UV light or EB is preferred for the purposes of the present invention.
  • the exposure of the coating to UV light takes place at a wave length of 100 to 380 nm.
  • the UV rays generally may be produced in gas discharge lamps of which mercury vapor lamps in particular may be used as medium-and high-pressure lamps (1 to 10 bar).
  • a radiation dose of 10 to 100 kilogray (kGy) is preferred. Such application and curing process is known.
  • the radiation-curable overprint coatings shall be applied to the printed side of the printed substrate film. Such coating may improve the barrier properties or the optical appearance of the final multilayer film.
  • the outer surface of the core substrate film is not coated with a single material but it comprises two separate areas which are coated with different materials.
  • One part of the surface is coated by a radiation curable coating material, a second part of the surface is coated by a heat seal lacquer material. Both areas are separated from each other but together the whole surface is covered by an additional layer.
  • the radiation cured coating is not applied to the whole surface but it shall be applied to selected areas of the outer surface.
  • the substrate film is printed.
  • Such film is provided on rolls and processed as large surface which will be cut prior to form the packaging into smaller portions which shall form the packaging. Accordingly such area of the outer side which will form a single packaging is pre-determined in its form. Also the area to be used for sealing of the packaging is pre-determined. This sealing area of the film shall be free from the radiation cured coating.
  • Heat seal materials are generally known to the skilled person. Such materials include liquid or meltable adhesives, which are applied to a sealing area. Examples for heat sealing materials are heat sealing dispersions, heat sealing lacquers or hotmelt adhesives which form a layer. They will be applied in a liquid form and dried or cured to form a layer. This layer is not pressure sensitive by ambient temperature, it needs a pressing and warming step to seal with a second substrate.
  • Heat sealing dispersions are predominantly PVDC-, PVAC-, poly(meth)acrylate-, EVA-, PU- or latex-containing dispersions which, after evaporation of the water, form sealable, dry and generally transparent layer.
  • organic solvents are employed in heat sealing lacquers using the same or similar polymers.
  • Heat sealing materials based on hot melt adhesives are based on ethylene/vinyl acetate copolymers which are applied to the substrate in a molten form.
  • the heat seal material shall be applied in an amount of about 1 to 20 g/m 2 , preferably up to 10 g/m 2 , most preferred up to 5 g/m 2 .
  • a preferred embodiment of the invention uses a heat such lacquer or dispersion for coating such surfaces.
  • the heat seal material is sealable against the same surface or preferably it can be sealed against the inner layer of the packaging.
  • the radiation cured coating consists of an EB-cured coating.
  • Such coating can be applied as liquid material by coating rollers, printing devices or other means. It is required that the application process is performed in a way that only predetermined parts of the surface are coated. After such coating the heat seal material is applied to the second part of the surface. This can be performed by various means, for example coating rollers, spray devices, nozzles or preferably printing devices.
  • the liquid or molten heat seal material shall be applied to only such parts of the outer surface which are dedicated to seal the packaging. Preferably it is required that such part is not covered with the EB coating.
  • the areas selected as sealing area and as printed coating area shall be separate from each other.
  • the material for both layers are preferably selected in a low viscosity form it is possible to deposit the coating very exact. No overlap of the two areas is required.
  • the areas shall be adjacent to each other and not be separated by a non coated area. It is possible to apply both coating materials after another and use only one drying or crosslinking step. It is also possible to apply the radiation coated section first and consequently crosslinking it. The other portion of the outer surface is coated with the heat seal material thereafter. It is also possible to change the sequence of coating steps. It shall be ensured to apply both coating areas adjacent to each other without mixing the areas.
  • a preferred final multilayer film according to the invention shall comprise at least one thermoplastic polymer layer as core substrate film material, an inner surface or layer consisting mainly of PE or EVA and at the outer side after the pretreat- ment first a printing layer and a then a coating layer.
  • Such coating layer shall comprise one area coated with a radiation cured coating and a distinct area comprising a coating with a heat seal lacquer.
  • Such film shall have a thickness from 5 to 500 ⁇ , preferably from 10 to 250 ⁇ .
  • the outer layer consists of a coating which is cured by EB and separate from this area a layer prepared from a water borne or solvent borne heat seal material. The thickness of heat seal material and EB cured coating shall be similar or the same.
  • the film to manufacture a packaging consists of multiple layers. Such layers shall fulfill the functions as mechanical stable film, as barrier layer against gas, liquids or other ingredients which may deteriorate the packaged good. Additionally the film shall be protective against light and shall provide an attractive exterior to the product.
  • the film is provided as a roll.
  • the roll is unwounded, a film is formed, eventually sealed, and filled with a product. Afterwards such part can be folded and the areas designated as sealing area are sealed together.
  • this is performed in a heat seal process using a heat seal jaw at an elevated temperature to both apply pressure and heat the film being heat sealed.
  • the temperature is above the heat seal initiation temperature which is depending from the film forming material and the heat seal layer.
  • the film can be used as A to B sealing material. In such case the outer side of the film is pressed in the pre-determined areas against the inner side of the film and sealed by the known devices which apply pressure and temperature to the seal area.
  • the coated film according to the invention may be used to form small packaging but it can also be used in other forms, for example as a wrap to cover. Specifically the coated and printed film may be adapted for use to form a packaging for food products.
  • a film coated according to the invention comprising layers of different materials on the outer surface
  • An A to B sealing is possible and the stability of such sealed area against defects or delamination is improved.
  • the amount of material to manufacture such packaging is reduced.
  • the outer side of the packaging can be printed to form a decorative appearance.
  • the pretreatment of the outer surface of the core film forming material can be performed to the whole surface without negatively influencing the bonding properties.
  • Film 1 transparent bioriented PP film, heat sealable thermoplastic layer on both sides,
  • Film 2 opaque bioriented PP film, cold seal prepared at inner side
  • Film 3 metallized bioriented PP film, heat sealable thermoplastic layer on both sides,
  • Film 4 transparent bioriented PP film, heat sealable thermoplastic layer on inner side
  • Film 5 transparent LDPE film, heat sealable thermoplastic inner surface
  • a heat seal dispersion based on EVA was applied in an amount of 2,5 g/m 2 on the pre-treated side of the film, being the outside of a packaging material.
  • the sealing material was dried.
  • the adhesive force was measured as g/inch (2,54 cm) of a sealed sample at 25°C.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

La présente invention concerne un film multicouche destiné à la fabrication d'emballage, comprenant un côté intérieur, un tel côté intérieur se composant d'une couche de polymère thermoplastique thermoscellable, au moins une seconde couche se composant d'un matériau de substrat central, la surface extérieure de cette couche étant soumise à un prétraitement et ensuite recouverte d'une couche d'image imprimée, la couche d'image étant recouverte d'une couche extérieure. Une telle couche extérieure se compose d'une première zone recouverte d'un matériau de revêtement durci par durcissement par rayonnement, et, séparée de cette zone, d'une seconde zone qui est recouverte d'une laque de thermoscellage.
PCT/EP2010/062958 2010-09-03 2010-09-03 Film multicouche scellable pour matériaux d'emballage WO2012028202A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2010/062958 WO2012028202A1 (fr) 2010-09-03 2010-09-03 Film multicouche scellable pour matériaux d'emballage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2010/062958 WO2012028202A1 (fr) 2010-09-03 2010-09-03 Film multicouche scellable pour matériaux d'emballage

Publications (1)

Publication Number Publication Date
WO2012028202A1 true WO2012028202A1 (fr) 2012-03-08

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014070241A1 (fr) * 2012-11-01 2014-05-08 Jindal Films Americas Llc Films de polypropylène orientés métallisés revêtus
WO2017102497A1 (fr) * 2015-12-17 2017-06-22 Basf Se Dispersions polymères aqueuses pauvres en émulsifiant pour la préparation de feuilles composites
CN111021086A (zh) * 2019-12-06 2020-04-17 广东宝佳利绿印股份有限公司 一种环保型充气膨化食品包装膜

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1231052A1 (fr) 2001-02-07 2002-08-14 Sonoco Development, Inc. Matériau d'emballage, son procédé de fabrication et emballage fabriqué au moyen de celui-ci
EP1286841A2 (fr) 2000-06-06 2003-03-05 Cryovac, Inc. Film thermoplastique imprime pourvu d'un vernis a surimpression seche par rayonnement
WO2005097489A2 (fr) * 2004-04-02 2005-10-20 Huhtamaki Ronsberg, Zweigniederlassung Der Huhtamaki Deuschland Gmbh & Co. Kg Film enroulable servant a former un emballage

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1286841A2 (fr) 2000-06-06 2003-03-05 Cryovac, Inc. Film thermoplastique imprime pourvu d'un vernis a surimpression seche par rayonnement
EP1698480A2 (fr) 2000-06-06 2006-09-06 Cryovac, Inc. Produit alimentaire emballé
EP1231052A1 (fr) 2001-02-07 2002-08-14 Sonoco Development, Inc. Matériau d'emballage, son procédé de fabrication et emballage fabriqué au moyen de celui-ci
WO2005097489A2 (fr) * 2004-04-02 2005-10-20 Huhtamaki Ronsberg, Zweigniederlassung Der Huhtamaki Deuschland Gmbh & Co. Kg Film enroulable servant a former un emballage

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014070241A1 (fr) * 2012-11-01 2014-05-08 Jindal Films Americas Llc Films de polypropylène orientés métallisés revêtus
WO2017102497A1 (fr) * 2015-12-17 2017-06-22 Basf Se Dispersions polymères aqueuses pauvres en émulsifiant pour la préparation de feuilles composites
CN111021086A (zh) * 2019-12-06 2020-04-17 广东宝佳利绿印股份有限公司 一种环保型充气膨化食品包装膜
CN111021086B (zh) * 2019-12-06 2021-02-05 广东宝佳利新材料股份有限公司 一种环保型充气膨化食品包装膜

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