WO2010115288A1 - Étiquette en polymère perméable au gaz pour respiration contrôlée - Google Patents

Étiquette en polymère perméable au gaz pour respiration contrôlée Download PDF

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Publication number
WO2010115288A1
WO2010115288A1 PCT/CA2010/000539 CA2010000539W WO2010115288A1 WO 2010115288 A1 WO2010115288 A1 WO 2010115288A1 CA 2010000539 W CA2010000539 W CA 2010000539W WO 2010115288 A1 WO2010115288 A1 WO 2010115288A1
Authority
WO
WIPO (PCT)
Prior art keywords
label
container
produce
micro
perforations
Prior art date
Application number
PCT/CA2010/000539
Other languages
English (en)
Inventor
Christian Von Glasow
Original Assignee
Ultraperf Technologies Inc.
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 Ultraperf Technologies Inc. filed Critical Ultraperf Technologies Inc.
Priority to CA2795872A priority Critical patent/CA2795872A1/fr
Priority to US13/263,666 priority patent/US20120031795A1/en
Publication of WO2010115288A1 publication Critical patent/WO2010115288A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65C—LABELLING OR TAGGING MACHINES, APPARATUS, OR PROCESSES
    • B65C9/00—Details of labelling machines or apparatus
    • B65C9/0015—Preparing the labels or articles, e.g. smoothing, removing air bubbles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65C—LABELLING OR TAGGING MACHINES, APPARATUS, OR PROCESSES
    • B65C1/00—Labelling flat essentially-rigid surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65C—LABELLING OR TAGGING MACHINES, APPARATUS, OR PROCESSES
    • B65C9/00—Details of labelling machines or apparatus
    • 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
    • B65D81/263—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 ventilating the contents

Definitions

  • This description relates to packaging for food. More particularly, the present specification relates to labels, methods of making such, and the labelling of containers, to provide gas permeable packaging solutions.
  • the quality and shelf life of fresh produce is enhanced by enclosing them in packaging that is capable of controlling levels of certain gases such as oxygen, carbon dioxide and water vapour (moisture) in the environment of the produce.
  • MAP Modemosphere Packaging
  • Modified Atmosphere For example, typical lid closable trays made out of rigid plastic material, and which are subsequently wrapped by a shrink band placed around the lid and tray in order to ensure a hermetic sealing of the overall package, do not allow for appropriate gas permeability. Oxygen inside such packaged trays is quickly consumed by the produce stored therein, which leads to accelerated produce degradation and limited shelf life.
  • Typical containers, such as the above-noted tray and lid example, are also typically incapable of providing MA.
  • Modified Atmosphere (MA) it is intended to refer to the packages ability to modify its interior atmosphere via a controlling of ingress and egress of certain gases.
  • the packaging solution herein disclosed proposes an improved label which is gas permeable and capable of MA.
  • the present disclosure seeks to provide an improved label that addresses one or more disadvantages associated with prior art produce packaging and/or labeling, or at least provides useful alternatives thereto.
  • a label for installation over an opening of a container to be loaded with produce comprising: a thin layer of material; and micro-perforations through the label, whereby upon the label being sealingly installed over the opening of the container, the micro-perforations controllably transfer a gaseous substance into or out of the container, through the label, and according to a respiration rate of the produce to be loaded in the container.
  • a gas permeable package comprising: a container for holding produce, the container defining an opening to an interior space of the container; a label sealingly affixed to the container to cover the opening; the label comprising a thin layer of material; and micro-perforations practiced therethrough for controllably transferring a gaseous substance into or out of the container, through the label, and according to a respiration rate of the produce to be loaded in the container.
  • a method for labeling a container loaded with produce comprising: forming an opening within a container to be loaded with produce; loading the produce into the container, the produce having a given respiration rate; sealingly installing a label to the container, the label comprising: micro-perforations positioned over the opening once the label adhered to the container, the micro-perforations for controllably transferring a gaseous substance into and out of the container according to the respiration rate of the produce therein.
  • the term "produce” is intended to refer to fresh fruits and vegetables, flowers, or any other type of produce that presents various respiration rates which are to be taken into consideration in order to maximize their shelf life.
  • shelf life is intended to refer to the time until the produce is no longer suitable for consumption and/or presentation to customers and shall be discarded. In one example, this is the time until the produce presents fully-ripe or over-ripe characteristics, whichever the case may be.
  • micro-perforations refer to perforations having a well-defined area which allow a controlled transmission of gases through the package.
  • controlled respiration or “controlled respiration rate” is intended to refer to the control of the amount of gas that is allowed to pass through a material.
  • a sealed container made of such breathable material is able to control the amount of humidity which is allowed to enter and escape from the interior volume of the container, while permitting oxygen and carbon dioxide to pass through adequately.
  • Produce also referred to as foodstuff
  • Such a control on the type and the amount of gazes which are permitted to enter and escape the sealed container similarly provides for the control of the internal pressure and humidity level inside such containers.
  • the gaseous environment inside the package may therefore be kept different compared to an exterior gaseous environment (e.g., oxygen levels can be lower inside than outside the package, an amount of water molecules can also be kept higher inside the container, and the like).
  • Fig. 1 is a schematic front elevation view of a labeled package (e.g., a bag), in accordance with an embodiment
  • FIG. 2 is a schematic cross-sectional view of the label of Fig. 1 ;
  • Fig. 3a is a method for fabricating the labeled package of Fig. 1 , in accordance with an embodiment;
  • Fig. 3b is a method for labeling a container loaded with produce to produce the labeled package of Fig. 1 , in accordance with an embodiment
  • Fig. 4 is a photograph of the labeled package of Fig. 1, with a printed label, in accordance with an embodiment.
  • a labeled package 10 comprising a container 12, here in the form of a reclosable bag, for holding fresh produce 16.
  • the bag 12 is labeled with a label 18 in accordance with embodiment as described herein.
  • the bag 12 takes the form of a closeable recipient which is optionally made of a translucent polymer material.
  • the label 18 is in turn made of a polymer material, such as polyester, and is micro-perforated to provide a controlled respiration rate for the produce 16 stored inside the bag 12.
  • the micro-perforations of the label are such that the label itself is gas permeable and capable of controlling a respiration through its membrane by way of controlling a type and/or an amount of gas passing there through. In this way, for example, a moisture level inside the bag 12 is kept constant, while further maintaining an optimal respiration rate for the produce 16.
  • the bag 12 has an opening 14 defining an opening periphery at a location where the label 18 is to be positioned.
  • the size of the opening 14 is variable and dependent on an overall size of the bag 12 and/or a size of the label 18 to be installed, affixed or adhered.
  • the label 18 is then positioned over the opening 14 such that its adhesive under-coating (not shown) adheres to the periphery (also referred to as one or more edges) of the opening 14.
  • the label 18 is made to adhere to the container so as to create and airtight, sealed package 10 which is able of gas permeability via the label 18 alone.
  • the label is printable over its exterior or upper surface area 20, although may remain unprinted as desired.
  • the area 20 has printed information pertaining to the produce 16, a producer, a vendor, a price, or any other useful information.
  • the label 18 is made of various polymer structures, such as any number or combinations of specific polymer structures suitable for food contact: polypropylene, polyethylene or combination of polyethylene and polypropylene for example.
  • the label 18 is made of a combination of a paper coated with a plastic layer.
  • the label 18 has a thickness varying from about 25 to about 175 microns.
  • FIG. 2 shows a cross-sectional schematic view of a specific embodiment of a label 18 with micro-perforations 22.
  • the micro-perforations 22 have a diameter in the order of about 30 to about 150 microns. In another instance, the micro- perforations 22 have a diameter from about 30 to about 90 microns in size, whereas in yet another instance, the diameters range from about 30 to about 60 microns. In some instances, the distribution of the micro-perforations 22 is uniform over the entire surface of the label 18, or an area thereof such as a center or middle-portion. In other instances, the micro-perforations are grouped over a specific area of the label.
  • the size, position, and distribution of the micro-perforations 22 are dependent on the characteristics of the produce 16 and/or of the container 12. For example, a respiration rate of the produce 16 as well as a quantity of produce 16 in the container 12 is considered. Other characteristics which are known to have an incidence on a type and an amount of gas transfer(s) to be allowed and maintained by the label 18 are optionally considered in order to provide an optimal conservation environment for the produce 16. In this way, the produce's shelf life is extended.
  • micro-perforations 22 include: produce moisture retention, ideal moisture levels, a shape or size of the produce, the container, or a combination thereof.
  • size of one or more micro-perforations 22 is chosen based on a moisture level to be kept inside the container 12, so as to retain or to allow an escape of water molecules.
  • the label 18 in accordance to the illustrated example has a base layer 24 (also referred to herein as a thin layer of material), an optional adhesive layer 26 and an optional print layer 28.
  • the print layer can be replaced simply by printing (i.e., printed text or image).
  • the base layer 24 is made of a combination of polymers or paper-type materials, such as cardboard or wax paper, coated with polymer.
  • Materials for the base layer 24 can also include translucent plastics, cellulose-based films and corn-based films alone or in combination.
  • the adhesive layer 26 is provided as an under-coating, or on a reverse side of the label 18 intended to be adhered to a container.
  • the adhesive layer is of a permanent type, although kept suitable for food contact and ingestion.
  • the adhesive layer is non-permanent to allow removal and re-adherence.
  • Such a label is usable to open the container via the opening to access the produce therein.
  • the label 18 in fact could replace the lid (or cover) entirely.
  • the adhesive layer 26 is optional when the adhesive is provided on the container 12 instead; e.g., in the periphery of opening 14.
  • the adhesive layer 26 of the label 18 is provided adjacent the print layer 28, both applied on a same side of the base layer 24. This embodiment is used in cases where the label is affixed to the container via adherence on an interior wall of the container, as later described.
  • Non-limiting examples of adhesives which can be used include either water or solvent based adhesives; acrylic or rubber emulsions such as soluble rubber or maleic anhydride (MAH) adhesives for example, which are permanent or not; or any food-grade approved adhesive compositions, glues or epoxies which are adapted to adhere to a variety of surfaces such as paper, corrugate, metals, glass, vinyl, foam, fabric, polystyrene, polypropylene, polyethylene, paper, or corrugate under whichever conditions such as cold, hot, damp or dry conditions.
  • the adhesive layer is a transparent, non-tacky and flexible film composition such as a vinyl acetate-maleate copolymer resin available on the market as a blend of isopropyl acetate and toluene.
  • the print layer 28 is present when the label 18 is printed with a layer of ink suitable for proper adherence to the upper or front side of the label 18 opposite the adhesive layer 26. Any inks which are suitable for printing on a polymer-based material such as any suitable food-safe inks are used.
  • the label 18 is a self-adhesive permanent label 18 in that the adhesive layer 26 does not require the application of extra moisture in order to obtain an adhesive effect of the layer.
  • the adhesive layer 26 is protected with a backing paper (not shown) until it is removed prior to sticking the label 18 on the container 12.
  • an additive compound 29 is optionally added to the base layer 24.
  • the additive compound 29 can additionally or alternatively be added to the adhesive layer 26.
  • Such an additive compound 29 is intended to be used for example, to provide a control on a ripening rate of the produce stored in the container, or to improve translucence of the container by controlling any fogging effect occurring from the moisture level inside the container.
  • additives which are optionally used include food grade anti-fog agents and ripening agents such as food grade ethylene absorption additives.
  • the label 18 is fabricated according to any type of suitable manufacturing method such as one illustrated in Fig. 3a.
  • the method 30 involves the following steps:
  • step 32 an adhesive layer is applied over a thin layer of material in order to form a label substrate.
  • This step is accomplished in one example by coating at least one side of a sheet of film material forming the base layer with a layer of adhesive substance. The other side or the same side is optionally printed by way of applying a print layer.
  • step 34 at least a portion of the label substrate is micro- perforated to provide micro-perforations through the label substrate, which includes the base layer, the adhesive layer and the print layer when applied in step 32.
  • the micro-perforations are designed in size and distributbn over the label substrate so as to controllably transfer on ore more given gaseous substances through the label substrate, and based on the respiration rate of the fresh produce to be contained in the container.
  • the micro- perforations have a size which is able to allow the ingress of oxygen while venting out carbon dioxide and retaining moisture inside in accordance to the produce's needs for longer shelf life.
  • the label substrate is micro-perforated according to a pre-established design, by subjecting the label substrate to a number of small high voltage electric discharges (intense energetic sparks) which vaporize the substrate at their application location.
  • a laser is used to produce the micro-perforations.
  • step 36 the label substrate is cut to form one or more gas permeable labels in accordance with a final size and shape. While this step is optionally done prior to step 32 and/or 34, in this embodiment, the label substrate is cut to provide one or more finished self-adhesive labels. Alternatively, cut lines are created in order to supply sheets of multiple pre-formed labels and allow produce distributors to themselves cut and separate the labels from one another.
  • the above method 30 is varied such that the base layer is micro-perforated (step 34) prior to the coating of the adhesive and optional print layer (step 32).
  • the layering technique used to apply the adhesive layer and the optional print layer on the base layer does not reclose the micro-perforations.
  • the type of adhesive and the ink used are composed of small enough particles which eliminate any risks of clogging micro-perforations.
  • the adhesive layer is applied over a given area of the label, while the micro-perforated area occupies another area of the label different than the given area used by the adhesive layer.
  • the adhesive layer is applied over a given area of the label which is different than the area occupied by the print label.
  • the adhesive layer is positioned along a periphery of the label, while the print layer is at a middle- portion of the label.
  • step 32 the application of the adhesive layer in step 32 is optional when for example the adhesive is to be instead applied on the container prior or during the affixing the label thereon.
  • the final cutting step 36 is performed prior to the printing of the label (application of the optional print layer).
  • the final label is capable of maintaining a given respiration rate in accordance to the sizes and shapes of the micro-perforations.
  • a method 40 for labeling a container which is to be or is previously loaded with produce is shown.
  • step 42 an opening is formed within a container (or a lid portion thereof) which is to be loaded with produce.
  • step 44 the produce is loaded into the container.
  • the produce can be any produce which has a given pre-established respiration rate, or range of thereof, as known from the type of quantity of produce stored in the container.
  • the gas permeable label is fixedly and sealingly positioned onto the container, over the opening.
  • the gas permeable label has an adhesive film which is meant to adhere along the periphery of the opening in order to provide for an airtight seal with the container. In this way, the overall package respires from the label. This is possible since the micro-perforations are provided through the adhesive film at a location on the film which is in-line or at least corresponding to a location of the opening once the gas permeable label is positioned onto the container.
  • the adhesive film of the label is such that in step 46, a slight pressure is applied on the label to affix it to the container.
  • micro-perforations allow for the label to controllably transfer one or more gaseous substances into and out of the container in order to maintain a given gaseous environment inside the container, as provided from the respiration rate of the produce.
  • the label has an adhesive layer for allowing the label to be adhered along a periphery of the opening.
  • Fig. 4 is a photograph of the package 10 of Fig. 1 , with the label 18 being printed with package information such as: a description of the produce 16 inside the container 12; a purchasing price; a vendor's name; a bar code associated to the package; and the like.
  • the produce 16 comprises a mix of cut and washed vegetables including carrots and baby tomatoes. Any other produce can however be packaged, such as any vegetable, fruit, meat, fish, nuts, baked goods, and the like.
  • the gas permeable, micro-perforated label 18 as per the above description is positioned over the opening 14, which is here circular and formed on a top surface of the container 12.
  • the size of the opening 14 is such as to create an opening area between about 150 mm 2 and 600 mm 2 .
  • the size of the opening 14 has an opening area between about 600 mm 2 and 1000 mm 2 .
  • the size of the opening 14 is however adjustable and dependent on the container's shape and size, as well as the quantity and/or type of produce 16 therein.
  • the label 18 is affixed from an interior side of the container 12.
  • the container 12 in the picture of Fig. 4 has a lid 50 onto which is located the opening 14.
  • the label 18 is affixed from the interior side of the lid 50 using adhesive located between the label and the periphery of the opening 14. In this way, the container is loadable with produce after the installation of the label thereto, but prior to the closing of the lid 50.
  • the container 12 can be any type of container such as a bag made of plastic-type material or a differently shaped container such as a bottle, a box, or any other hollow interior recipient for storing produce, not necessarily re- closable or re-sealable.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)

Abstract

La présente invention porte sur une étiquette destinée à être installée sur une ouverture d'un conteneur devant être chargé de produit. L'étiquette comprend : un film à base de polymère ; et des micro-perforations à travers le film à base de polymère, grâce à quoi, lorsque le film à base de polymère est installé de façon étanche sur l'ouverture du conteneur, les micro-perforations transfèrent de façon contrôlable une substance gazeuse (telle que de l'oxygène et/ou du dioxyde de carbone) dans ou hors du conteneur, à travers l'étiquette, et conformément à une vitesse de respiration du produit devant être chargé dans le conteneur.
PCT/CA2010/000539 2009-04-08 2010-04-08 Étiquette en polymère perméable au gaz pour respiration contrôlée WO2010115288A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA2795872A CA2795872A1 (fr) 2009-04-08 2010-04-08 Etiquette en polymere permeable au gaz pour respiration controlee
US13/263,666 US20120031795A1 (en) 2009-04-08 2010-04-08 Gas permeable polymer label for controlled respiration

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US21212009P 2009-04-08 2009-04-08
US61/212,120 2009-04-08

Publications (1)

Publication Number Publication Date
WO2010115288A1 true WO2010115288A1 (fr) 2010-10-14

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ID=42935607

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Application Number Title Priority Date Filing Date
PCT/CA2010/000539 WO2010115288A1 (fr) 2009-04-08 2010-04-08 Étiquette en polymère perméable au gaz pour respiration contrôlée

Country Status (3)

Country Link
US (1) US20120031795A1 (fr)
CA (1) CA2795872A1 (fr)
WO (1) WO2010115288A1 (fr)

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US20210252836A1 (en) * 2020-02-14 2021-08-19 Illinois Tool Works Inc. Water vapor permeable cross-laminated polymer film assembly

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US20140272039A1 (en) * 2013-03-15 2014-09-18 Multisorb Technologies, Inc. Reactive ethylene absorber
EP2963177A1 (fr) * 2014-07-04 2016-01-06 Danapak Flexibles A/S Feuille d'emballage pour emballer du fromage, procédés de fabrication et d'emballage associés
US20160214782A1 (en) * 2015-01-28 2016-07-28 Odds, Llc Packaging system for modified atmosphere container
US20180064143A1 (en) * 2016-09-07 2018-03-08 LaserSharp FlexPak Services, LLC Modified atmosphere packaging of Perishable Produce
US20180327166A1 (en) * 2017-05-11 2018-11-15 Nicholas J DaCosta Modified atmosphere packaging with base-mounted micro-permeable patch

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Also Published As

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US20120031795A1 (en) 2012-02-09
CA2795872A1 (fr) 2010-10-14

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