WO2011045455A1 - Emballage pour produit périssables - Google Patents

Emballage pour produit périssables Download PDF

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Publication number
WO2011045455A1
WO2011045455A1 PCT/ES2010/070425 ES2010070425W WO2011045455A1 WO 2011045455 A1 WO2011045455 A1 WO 2011045455A1 ES 2010070425 W ES2010070425 W ES 2010070425W WO 2011045455 A1 WO2011045455 A1 WO 2011045455A1
Authority
WO
WIPO (PCT)
Prior art keywords
oxygen
polymer
container
ethylene
adhesive agent
Prior art date
Application number
PCT/ES2010/070425
Other languages
English (en)
Spanish (es)
Inventor
Julián ESCARPA GIL
Original Assignee
Sp Berner Plastic Group, S.L.
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 Sp Berner Plastic Group, S.L. filed Critical Sp Berner Plastic Group, S.L.
Publication of WO2011045455A1 publication Critical patent/WO2011045455A1/fr

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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
    • 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
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • 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
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • 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
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
    • 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
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/308—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/24—All layers being polymeric
    • 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
    • B32B2270/00—Resin or rubber layer containing a blend of at least two different polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
    • B32B2307/7242—Non-permeable
    • B32B2307/7244—Oxygen barrier
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2439/00—Containers; Receptacles
    • 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
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/24—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants
    • B65D81/26—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, or removing by ventilation, fluids, e.g. exuded by contents; Applications of corrosion inhibitors or desiccators
    • B65D81/266—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, or removing by ventilation, fluids, e.g. exuded by contents; Applications of corrosion inhibitors or desiccators for absorbing gases, e.g. oxygen absorbers or desiccants
    • B65D81/267—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, or removing by ventilation, fluids, e.g. exuded by contents; Applications of corrosion inhibitors or desiccators for absorbing gases, e.g. oxygen absorbers or desiccants the absorber being in sheet form

Definitions

  • the present invention relates to the field of the conservation of perishable products, more specifically to the field of the conservation of foods especially sensitive to oxygen.
  • nano-loads such as montmorillonite which, due to its mere presence in the polymer matrix, hinders and slows the passage of oxygen through the wall of the container.
  • said nanoloads in turn have certain disadvantages, especially with regard to the difficulty in achieving a uniform dispersion and orientation within the base polymer, which on the other hand is a particularly critical characteristic to achieve a barrier. effective against oxygen.
  • At least one base polymer and at least one oxygen barrier polymer has also been proposed.
  • the polymers capable of acting as an oxygen barrier are, among others, ethylene vinyl alcohol (EVOH), vinylidene polychloride (PVDC), nitrile polyacryl (PAN) or, more recently, liquid crystal polymers (LCP).
  • this multilayer combination of polymer and oxygen barrier despite substantially reducing the permeability of the container wall to the passage of oxygen, does not guarantee periods of conservation for more than one year in the case of the preservation of foods especially sensitive to oxidation such as canned meat or fish, dairy products, or canned vegetables and pre-cooked foods.
  • This combination of oxygen barrier and sequestering additive makes it possible to obtain polymeric complexes with sufficient oxygen protection to ensure the correct preservation of foods more sensitive to oxidation for periods of time similar to those achieved through the use of conventional packaging of glass or metal.
  • the combination of PET-EVOH-PET is especially appreciated for its low oxygen permeability.
  • this combination has the disadvantage, on the one hand, of the high permeability of PET to water vapor as well as, on the other hand, of the great sensitivity that EVOH presents to the presence of moisture .
  • Due to this, although the PET-EVOH-PET combination makes it possible to carry out the manufacturing of the containers by means of the injection process, the EVOH oxygen barrier present in them could be affected during the subsequent autoclave stage, very common in the manufacture of canned goods, or, in the case of not undergoing the autoclave process, once the containers have been manufactured, their permeability could be strongly affected by the variations in environmental humidity to which they are subjected during their useful life.
  • At least one of the above layers in turn comprises at least one oxygen sequestrant additive.
  • a particular embodiment of the invention is characterized by comprising an additional internal layer of polypropylene, in order to avoid migrations of the additives used towards food, which could damage them.
  • the base polymer of the outer and inner layer of the package consists of a polyolefin preferably selected from a group consisting of polyethylene, polypropylene, and copolymers of propylene and ethylene, butene or other alpha olefins such as hexene or octene, as well as any combination of the above.
  • the monomer used is ethylene, preferably in a proportion that represents up to about 5% by weight, and may also contain additives as clarifiers, well known commercially.
  • heterophasic copolymers or propylene block copolymers may also be used.
  • the former are copolymers that contain a low stiffness phase consisting of a copolymer of propylene and ethylene or 1-butene dispersed in a matrix of propylene polymer of high rigidity.
  • the high stiffness polypropylene matrix contains from 0 to about 5% by weight of definites that are not propylene, while the low stiffness phase is composed of propylene copolymer containing up to 35% by weight of a comonomer that is not propylene
  • the base polymer is modified by an adhesive agent or compatibilizing agent, preferably, in a percentage between 1 and 25%, more preferably between 1 and 20% by weight of the outer or inner layer in which it is comprised.
  • adhesive agents are preferably selected from a group consisting of polyethylene or polypropylene polymers containing graft polar groups; copolymers of ethylene and acrylic or methacrylic acid; copolymers of ethylene and acrylates or acetates; and derivatives of glycidyl methacrylate, or any combination of the foregoing.
  • the adhesive agent will consist of polypropylene with maleic graft anhydride.
  • the adhesive polymer will consist of polypropylene with acrylic graft acid.
  • the adhesive polymer will consist of a styrene-ethylene butylene-styrene copolymer with graft maleic anhydride.
  • the percentage of polar graft groups in the polypropylene will be less than 15% by weight with respect to the adhesive polymer.
  • the grafted polar group consists of acrylic acid
  • said acrylic acid will preferably be in a proportion less than 7% by weight of the adhesive polymer.
  • said maleic anhydride will preferably be found in a proportion less than 5%, more preferably less than 3% by weight of the adhesive polymer.
  • oxygen barrier polymer for the purpose of the invention it is understood as an oxygen barrier polymer a polymer capable of acting as a physical barrier for the transmission of oxygen, allowing to reduce, thanks to its presence, the permeability that the vessel wall would have if only it was constituted by the base polymer of the outer layers.
  • said oxygen barrier polymer is selected from a group consisting of ethylene vinyl alcohol (EVOH), vinylidene polychloride (PVDC), nitrile polyacryl (PAN), liquid crystal polymers (LCP), or any mixture of the above. More preferably, the oxygen barrier polymer used will be EVOH.
  • the oxygen oxygen sequestrant additive also known as an oxygen absorber, eliminator or scavenger, refers to a compound that is capable of irreversibly eliminating oxygen, both the residual inside the package and the one entering the outside, through a chemical oxidation reaction faster than the food itself.
  • the oxygen sequestrant additives used may consist of organic materials, preferably polymeric, and non-polymeric inorganic materials containing inorganic compounds in their composition. Both are able to react irreversibly with oxygen presenting various activation mechanisms to act preferably in the packaging process, or once the package has already been closed.
  • oxygen, metal or organic sequestrant additives that can be used for the invention, the most appropriate one can be selected based on cost criteria, capacity per unit weight to react irreversibly with oxygen and compatibility with components Polymers of the constituent materials of the layers of the container to which they wish to incorporate, as well as based on the manufacturing process thereof.
  • the following factors must be taken into account: the amount of initial or remaining oxygen when closing the container; the rate of oxygen entry through the wall, in the absence of the oxygen sequestrant; the type of product or food to be packaged; the maximum oxygen concentration allowed in the container; the shelf life of the product or food to be packaged; how to activate the system or how to accelerate the oxygen absorption process once it has been packaged; or the rate of absorption or irreversible reaction with the oxygen of the sequestering additive.
  • oxygen sequestering polymers within the framework of this invention those that are compatible with both the base polymer and adhesive agent layers are preferably selected when they are to be incorporated into said layers or with the inner barrier polymer layer when this is the case, so that a good dispersion or mixture of the oxygen sequestering polymer is obtained in the layer to which it is incorporated.
  • the oxygen sequestering additive comprises from 1 to 15% by weight with respect to the layer containing it of at less an oxidizable organic polymer.
  • This oxidizable organic polymer is preferably selected from a group consisting of copolyesters or copolyamides containing oligomeric segments derived from butadiene incorporating free olefinic unsaturated bonds in the main chain of the copolymer; copolyesters containing comonomers incorporating free olefinic unsaturated bonds on the side branch of the copolymer; ethylene copolymers containing chronomers incorporating free olefinic bonds on the side branch of the copolymer and polymers derived from cyclic diolefins, or any combination of the foregoing.
  • said oxidizable organic polymer consists of a copolymer of a vinyl aromatic monomer and a diene; a copolymer of ethylene propylene and a diene; or a cyclic ethylene-olefin copolymer such as ethylene norbornene polymers.
  • This oxidizable sequestering polymer can in turn be used pure or diluted previously in a polymer matrix before being incorporated into the package, said polymer matrix being preferably selected from a group consisting of polypropylene, polyethylene, polyethylene terephthalate, ethylene acrylic acid, ethylene vinyl acetate and ethylene butylacrylate, or Any combination of the above.
  • the invention will in turn comprise a catalyst, preferably a derivative of a transition metal, which will preferably be selected from a salt or an iron, cobalt, nickel or manganese oxide.
  • this catalyst will consist of cobalt salts derived from organic acids, such as stearic, octenyl succinic, ethylhexanoic and oleic, among others and will be comprised between 1 and 6000 ppm, more preferably, from 5 to 2000 ppm in terms of the transition metal. Thanks to the presence of the catalyst, it will be possible to activate the reaction of the oxygen with the oxygen-sequestering polymer, thus facilitating the elimination of the oxygen that passes through the container.
  • oxygen sequestering additives can be mixed with the constituent layers components of the multilayer structure of the package or included in additional adjacent layers. In this way, said sequestering additives can be found incorporated in the wall of the container, or even in the caps or lids that it can comprise.
  • the oxygen sequestrant additive is of an inorganic nature, it will preferably comprise iron.
  • said inorganic oxygen sequestrant additive will comprise at least one derivative of ascorbic acid or an alkali sulphite, or any combination of the foregoing.
  • the package will further comprise a photoinitiator that will be selected from a group consisting of benzophenone, acenaphthenoquinone, diethoxyacetophenone, o-methoxybenzophenone and 2-hydroxy-4-n-octyloxybenzophenone, or any combination of the above.
  • a photoinitiator that will be selected from a group consisting of benzophenone, acenaphthenoquinone, diethoxyacetophenone, o-methoxybenzophenone and 2-hydroxy-4-n-octyloxybenzophenone, or any combination of the above.
  • These photoinitiators are activated to function properly in the system consisting of the oxygen sequestrant additive, the catalyst and the photoinitiator itself using visible or UV radiation preferably with a wavelength between 200 and 700 nm and, more preferably, between 200 and 400 nm.
  • the proportion of catalyst, photoinitiator and oxygen sequestrant polymer comprised in the The layers of the container are calculated in such a way that the reaction of the latter with the oxygen is activated at a rate such that the presence of oxygen in the free space of the container once it is closed is between 50 and 200 ppm by weight. to the total weight of the container of the invention.
  • the package of the present invention may additionally comprise other additives, preferably selected from colorants, fillers, nucleating additives, impact modifiers and stabilizing agents or any combination thereof. Even more preferably, this additive will consist of an antioxidant preferably, between 0.01% and 0.5% of the total weight of the package.
  • the total thickness of the wall of the container will be between 300 microns and 2 mm, while the thickness of the inner layer of barrier material will be between 5 and 100 microns and more preferably between 8 and 80 microns.
  • the shape of the package is not particularly limited so, depending on the use, it can have the shape of a wide-mouth container commonly used to contain mostly solid foods or it can consist, for example, of a mouth container narrow, cup or cup type, in cases where it is required.
  • One of the main advantages of the package of the present invention is its ability to protect food contained inside it from oxygen, especially foods extremely sensitive to oxidation, such as canned meat or fish, Dairy products, or canned vegetables and pre-cooked foods, guaranteeing a duration of qualities organoleptic of these foods for a period of time greater than 3 years.
  • one of these methods may consist of analyzing the decreasing oxygen content over time of the vacant space of a perfectly hermetic container by means of equipment such as the Optics Foxy Oxygen Sensor System marketed by OCEAN OPTICS Inc.
  • the rate of oxygen transmission through the wall of the container can be adequately measured with also commercially accessible equipment such as the OX-TRAN from MOCON Inc.
  • the measurement of oxygen permeability can be carried out by the methods described in US5639815.
  • the oxygen permeability of the container of the present invention understood as the capacity of the material that constitutes it to allow the passage of oxygen without altering its internal structure, will be less than 0.5 ce mm / (m2 day atmosphere) , more preferably, less than 0.1 ce mm / (m2 day atmosphere) at a relative humidity of 50%.
  • the package may in turn comprise an additional inner layer, preferably, of base polymer, in order to avoid possible migrations of the additives comprising the package, as well as of the products resulting from the reactions of oxidation of the oxygen sequestrant additive, thus protecting the food included inside the package.
  • another preferred embodiment of the invention may comprise an outer layer additional to the above, in order to facilitate coloring or decorative printing of the container, so that the total number of layers of the container in this case will be 5 instead of 3.
  • the co-injection method is especially preferred.
  • the polymers that constitute the layers of the preferably three-layer structure of the package are concentrically guided in the molten state, injected into a mold through an injector of known design and widely used commercially.
  • said method of manufacturing the package may comprise an additional step of adding and mixing the oxidizable polymer with the main polymer component of any of the layers that are part of the container.
  • said mixing step will be intensively prepared prior to injection by known techniques capable of providing a suitable mixture of the molten polymer constituents. It will also be possible to carry out said mixing in the extrusion stage, prior to injection, of the molten mixture of the constituent components of the package.
  • the intensive pre-mixing of the components of the package either base polymer, adhesive agent and sequestering additive and, optionally, catalyst and photoinitiator, constituting the outer layers of the container in the event that the sequestering additive is include in these layers, or oxygen barrier polymer, sequestering additive and, optionally, catalyst and photoinitiator, it can be carried out by kneading in a molten state by means of known equipment such as those provided with twin screw extruders (co-rotating) or not), not being in any case limited to this only possibility.
  • known equipment such as those provided with twin screw extruders (co-rotating) or not
  • the continuous kneaders such as the CIM of Japan Steel Works Ltd.
  • the equipment used will comprise a single screw extruder following intensive mixing or kneading equipment, which will perform the kneading, extrusion and pelletizing operations.
  • the kneading or mixing operation of the constituent components of the package will be carried out at the lowest possible temperature in order to avoid the degradation of the polymeric components, thus protecting the ingredients through the use of an inert atmosphere. included in the feed hopper.
  • the photoinitiator although said compounds can be added together during the inert mixing stage of the previous constituents, namely the base polymer and the oxygen sequestrant additive , they will be added, preferably, at the time of manufacturing the package, thus mixing with the rest of the components in the extrusion stage prior to the injection.
  • the catalyst-photoinitiator system may be added in the form of a concentrate previously prepared in a polymer matrix compatible with the layer to be mixed comprising the sequestering additive.
  • an especially preferred for incorporating the oxygen sequestering additive into the layer or layers of the container of the invention will comprise a first step of mixing the inorganic components, preferably inorganic components that they comprise iron in its composition, and a later stage of concentration of the previous mixture in a polymeric matrix, preferably, polyethylene or polypropylene or other polymers compatible with the constituent material of the layer to be mixed, preferably, by an intensive mixing process as already mentioned above.
  • a polymeric matrix preferably, polyethylene or polypropylene or other polymers compatible with the constituent material of the layer to be mixed
  • the method of manufacturing the package will be similar to the previous one, based on inorganic sequestering components or non-polymeric oxygen absorbers.
  • Figure 1 shows a particular embodiment of the invention corresponding to a multilayer container package consisting of 3 layers.
  • Figure 2 shows a second particular embodiment of the invention corresponding to a package comprising an additional inner layer in contact with the product to be packaged.
  • a preform with three-wall structure was injected into a KORTEC co ⁇ injection unit, being molded into a SIDEL blow unit.
  • the material used was the ethylene vinyl alcohol copolymer EVOH F of KURARAY Co. (32% molar C2), which was incorporated by pre-mixing of the additive oxygen sequestrant Shelfplus 02 from CIBA.
  • the concentration of the oxygen sequestrant was 21.5 g / m2 in the final container.
  • the thickness of the central layer in the final container was 33 microns.
  • the material used as a base was the RANDOM IF 40 dg / min copolymer ISPLEN®PR290 P1M of REPSOL with a 4.5% ethylene molar content.
  • This copolymer was previously modified by melt blending at 220-230 ° C with the POLYBOND 3200 adhesive polymer (PP-g-MA) having a degree of functionalization with maleic anhydride of 1% by weight.
  • the final amount of maleic anhydride in the modified PP was 0.05% by weight.
  • the total thickness of modified polypropylene in the final package was 1 mm.
  • the packages were subjected to a deformation and corrugated test to observe some possible phenomenon of delamination of the multilayer structure, nevertheless showing excellent resistance to delamination.
  • the rate of transmission of oxygen into the interior was measured after 7 days, obtaining a permeability value against to oxygen below the minimum sensitivity level of an OXTRAN cell from MOCON Inc.
  • a preform was injected in the same way as that carried out in the test of Example 1 but by direct injection of thin wall without subsequent blowing in a Husky machine equipped with a Kortec co-injection system with A structure of the modified PP material / EVOH / PP modified thicknesses 400/30/400 microns.
  • an oxygen sequestrant additive was not used in the central layer, observing an oxygen permeability of 0.017 ce-mm / m2 ⁇ day ⁇ atm atm at room temperature and 0% RH, measured with an OXTRAN cell from MOCON Inc ., similar to that observed in example 1 when measured shortly after the container was constructed.

Abstract

L'invention concerne un emballage pour produit périssables caractérisé en ce qu'il comprend : a) une couche extérieure et une couche intérieure caractérisées en ce qu'elles comprennent au moins un polymère de base et au moins un agent adhésif; et b) une couche intermédiaire d'au moins un polymère barrière à l'oxygène; au moins une desdites couches comprenant au moins un additif séquestrant l'oxygène. L'invention concerne également le procédé d'obtention dudit emballage et son utilisation pour la conservation de produits périssables.
PCT/ES2010/070425 2009-10-16 2010-06-24 Emballage pour produit périssables WO2011045455A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ESP200902003 2009-10-16
ES200902003A ES2357820B1 (es) 2009-10-16 2009-10-16 Envase para productos perecederos

Publications (1)

Publication Number Publication Date
WO2011045455A1 true WO2011045455A1 (fr) 2011-04-21

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WO (1) WO2011045455A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2511089A1 (fr) * 2011-04-15 2012-10-17 Aisapack Holding SA Structure multicouche d'emballage

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001090238A2 (fr) * 2000-05-19 2001-11-29 Chevron Phillips Chemical Company Lp Systemes de melange compatible de polymeres impermeables a l'oxygene et de polymeres desoxygenants
US6677013B1 (en) * 1998-04-17 2004-01-13 Pechiney Emballage Flexible Europe Transparent multilayer polypropylene container with barrier protection
US20070275197A1 (en) * 2006-05-25 2007-11-29 Edgard Chow Resin composition and multilayer structure
EP1950028A1 (fr) * 2007-01-23 2008-07-30 Borealis Technology Oy Utilisation d'un polymère d'anhydride fontionnalisé pour l'élargissement de la fenêtre de traitement de polypropylène

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6677013B1 (en) * 1998-04-17 2004-01-13 Pechiney Emballage Flexible Europe Transparent multilayer polypropylene container with barrier protection
WO2001090238A2 (fr) * 2000-05-19 2001-11-29 Chevron Phillips Chemical Company Lp Systemes de melange compatible de polymeres impermeables a l'oxygene et de polymeres desoxygenants
US20070275197A1 (en) * 2006-05-25 2007-11-29 Edgard Chow Resin composition and multilayer structure
EP1950028A1 (fr) * 2007-01-23 2008-07-30 Borealis Technology Oy Utilisation d'un polymère d'anhydride fontionnalisé pour l'élargissement de la fenêtre de traitement de polypropylène

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2511089A1 (fr) * 2011-04-15 2012-10-17 Aisapack Holding SA Structure multicouche d'emballage
WO2012140602A1 (fr) * 2011-04-15 2012-10-18 Aisapack Holding S.A. Structure multicouche d'emballage

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Publication number Publication date
ES2357820B1 (es) 2012-03-13
ES2357820A1 (es) 2011-05-03

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