GB2582660A - A label for affecting the surrounding environment or micro climate within a package - Google Patents

A label for affecting the surrounding environment or micro climate within a package Download PDF

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Publication number
GB2582660A
GB2582660A GB1904457.7A GB201904457A GB2582660A GB 2582660 A GB2582660 A GB 2582660A GB 201904457 A GB201904457 A GB 201904457A GB 2582660 A GB2582660 A GB 2582660A
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United Kingdom
Prior art keywords
label
base layer
container
layer
component
Prior art date
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Withdrawn
Application number
GB1904457.7A
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GB201904457D0 (en
Inventor
John Newby Colin
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Individual
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Individual
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Publication date
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Priority to GB1904457.7A priority Critical patent/GB2582660A/en
Publication of GB201904457D0 publication Critical patent/GB201904457D0/en
Publication of GB2582660A publication Critical patent/GB2582660A/en
Withdrawn legal-status Critical Current

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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
    • 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
    • B65D81/268—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 enclosed in a small pack, e.g. bag, included in the package
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • B01D53/0407—Constructional details of adsorbing systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/81—Solid phase processes
    • B01D53/82—Solid phase processes with stationary reactants
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/30—Alkali metal compounds
    • B01D2251/304—Alkali metal compounds of sodium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/40—Alkaline earth metal or magnesium compounds
    • B01D2251/404—Alkaline earth metal or magnesium compounds of calcium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/60—Inorganic bases or salts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/60—Inorganic bases or salts
    • B01D2251/606—Carbonates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/60—Inorganic bases or salts
    • B01D2251/608—Sulfates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/70—Organic acids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/80—Organic bases or salts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/102—Carbon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/106—Silica or silicates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20738—Iron
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/10—Single element gases other than halogens
    • B01D2257/104—Oxygen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/50—Carbon oxides
    • B01D2257/504—Carbon dioxide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/80—Water
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/91—Bacteria; Microorganisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/06—Polluted air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/45—Gas separation or purification devices adapted for specific applications
    • B01D2259/4525—Gas separation or purification devices adapted for specific applications for storage and dispensing systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/26—Drying gases or vapours
    • B01D53/261—Drying gases or vapours by adsorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/26—Drying gases or vapours
    • B01D53/28—Selection of materials for use as drying agents
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
    • Y02C20/00—Capture or disposal of greenhouse gases
    • Y02C20/40—Capture or disposal of greenhouse gases of CO2

Abstract

A label 100 for affecting the surrounding environment comprising a base layer 106 for attaching to a surface 102, a permeable layer 110 extending over at least part of the base layer, a cavity defined by the base 106 and permeable 110 layers for receiving a chemically active component for affecting the environment, where the label is configured to convert by an external input from a deactivated to activated state to affect the surroundings. The external input may be an applied component, comprising application into the cavity, where the applied component may be a catalyst. The base and permeable layers may be thin films, formed from the same material, where the permeable layer may comprise one or more apertures. The active component may be a desiccant, oxygen scavenger, carbon dioxide absorbent, antibacterial composition, flavouring or additive for foodstuffs, or perfuming composition. A method of affecting the environment within a container is disclosed, providing an unsealed container and a label for affecting the environment surrounding the label, applying an external input to activate the label, applying the label to an interior surface of the container and sealing the container.

Description

A label for affecting the surrounding environment or micro climate within a package
Field of Invention
The present invention relates to a label for affecting the surrounding environment and/or micro climate, in particular for affecting the environment within a sealed container or package. The invention extends to a corresponding method.
Background
Consumer products in many industries are supplied and transported (often in loose form) in containers or flexible packages, which are sealed in order to prevent spillage and contamination to the product. Many products supplied in such sealed containers or packages tend to change over time as a consequence of aging -in particular, the condition of foodstuff changes as a result of natural biochemical processes.
Regulating (or otherwise affecting) the environment or micro climate within a sealed container or package may allow the speed of such changes to be reduced, or otherwise may allow the effect of such changes to be reduced.
Summary of the Invention
Aspects and embodiments of the present invention are set out in the appended claims. These and other aspects and embodiments of the invention are also described herein.
According to at least one aspect described herein, there is provided a label for affecting (and/or regulating) the surrounding environment (or micro-climate), optionally within a package or container, comprising: a base layer for attachment to a surface; a permeable layer extending over at least part of the base layer; and an cavity defined by the base layer and the permeable layer for receiving (and/or holding) a (chemically) active component for affecting the environment of the label; wherein the label is configured to be converted, by an external input, from a de-activated state into an activated state thereby to affect the surrounding environment.
By providing a label which is activated by an external input, improved ease of manufacturing may be provided, since the label can be attached easily to a surface. In particular, the label may be used inside a package or a container used for packaging a product, where the label may be activated shortly or immediately before the package or container is sealed or closed.
Wider applicability may also be provided, since a wider variety of active components may be -2 -used with minimal adaptation to the label. It will be appreciated that a complete label is formed prior to activation (i.e. the activation of the label is not merely a further step in a manufacturing process) -which may thereby allow the activation of the label to be controlled more precisely (e.g. such that it occurs immediately before the label is sealed into a package or container).
The base layer is preferably impermeable (in contrast to the permeable layer). The surrounding environment preferably does not include the surface to which the label is attached when in situ. Preferably, the surrounding environment is the environment within a container, wherein in use the base layer is attached to an interior wall of a (flexible package) or container.
Preferably, the external input comprises the application of an applied component. The cavity may comprise an opening which, in use, is sealed by a surface to which the base layer (and/or the label) is attached. The external input may comprise the application of the applied component into the opening of the cavity, optionally via the underside of the label. The external input may comprise the application of the applied component onto the permeable layer, preferably wherein the applied component is configured to permeate at least in part through the permeable layer into the cavity. The permeable layer may define a back wall of the cavity, or alternatively/additionally may define at least a part of a side wall of the cavity, wherein the label further comprises an outer layer forming a back wall of the cavity.
The applied component may comprise the active component. Alternatively, the label may further comprise the active component, wherein the active component may be configured to be converted, by an external input, from a deactivated state into an activated state thereby to affect the surrounding environment. In this case, the applied component may be one of: a component configured to activate the active component by reaction; and a catalyst.
The label may be configured to be converted from a deactivated state into an activated state when the base layer is attached to a surface. The label may be configured to be converted from a deactivated state into an activated state shortly before the base layer is attached to a surface.
Preferably, the base layer and the permeable layer are thin films. The base layer and the permeable layer may be formed of the same material. The permeable layer may comprise one or more apertures (thereby to provide permeability). The permeable layer may be of a reduced thickness relative to the base layer, such that the permeable layer is permeable. At least one -3 -of the base layer and the permeable layer may be a polymer such as polyethylene terephthalate (PET), polypropylene (OPP) or polyethene (PE).
The base layer may comprise an aperture, such that, in situ, the cavity defines an enclosed space defined between at least the base layer, the permeable layer, and the surface to which the base layer is attached. The thickness of the label may be less than 1 mm; preferably less than 0.5 mm; more preferably less than 0.3 mm; still more preferably less than 0.2 mm.
The label preferably further comprises an adhesive layer extending over at least part of the base layer on the other side of the base layer to the side which the permeable layer extends over, thereby to allow the base layer to adhere to a surface; and optionally further comprises a further adhesive layer extending over at least part of the base layer thereby to attach the permeable layer to the base layer. The adhesive layers are preferably gas-impermeable.
The active component may comprise at least of: a desiccant; an oxygen scavenger; a carbon dioxide absorbent; an antibacterial composition; an emitter of a particular composition (in particular by catalytic action); a flavouring for foodstuff; an additive for foodstuff; and a perfuming composition. The active component (or the concentration thereof)_is preferably configured to provide slow release of a chemical and/or a persistent effect, generally over at least several days.
The label optionally further comprises a liner on which the base layer is mounted prior to application to the surface. The liner may be configured to allow injection of an applied component therethrough (into the cavity). For example, the liner may comprise an aperture providing access to the cavity.
According to at least one aspect described herein, there is provided a system comprising a plurality of labels as described herein mounted on a liner.
According to at least one aspect described herein, there is provided a container comprising a label as described herein. The container may be one of: a pre-formed tray (and lid), blister packaging, "form-fill-seal" packaging, vacuum packaging, film packaging, paper packaging, foam packaging, a box, a carton, and a bag (which may be sealed or unsealed).
According to at least one aspect described herein, there is provided a method of affecting the environment within a container, comprising the steps of: providing an unsealed container and -4 -a label for affecting the environment surrounding the label; applying an external input thereby to convert the label from a deactivated state into an activated state; applying the label to an interior surface of the container; and sealing the container.
According to at least one aspect described herein, there is provided a method of affecting the environment within a container, comprising the steps of: providing component parts (such a plastic web) of a container and a label for affecting the environment surrounding the label; applying an external input thereby to convert the label from a deactivated state into an activated state; applying the label to a component part of a container which, once formed, corresponds to an interior surface of the container; and forming a sealed container including the label on an interior surface.
The label may be a label as described herein. Optionally the label is provided on a liner having a plurality of labels. The liner may comprise an aperture to allow an application of an external input through the liner and into the cavity. Activating the label may comprise, by use of an applicator, applying an applied component to the label; preferably while the label is on the liner. The step of activating the label is preferably performed before the step of applying the label to an interior wall of the container or the component part of the container. Applying the label to an interior surface or a component part may comprise one of: using a pressure-sensitive adhesive to attach the label to the surface or component part; and heat-sealing the label to the surface or component part.
The invention also provides a computer program or a computer program product for carrying out any of the processes described herein, and/or for embodying any of the apparatus features described herein, and a computer readable medium having stored thereon a program for carrying out any of the methods described herein and/or for embodying any of the apparatus features described herein.
The invention also provides a signal embodying a computer program or a computer program product for carrying out any of the methods described herein, and/or for embodying any of the apparatus features described herein, a method of transmitting such a signal, and a computer product having an operating system which supports a computer program for carrying out the processes described herein and/or for embodying any of the apparatus features described herein. -5 -
Any feature in one aspect of the invention may be applied to other aspects of the invention, in any appropriate combination. In particular, method aspects may be applied to apparatus aspects, and vice versa. As used herein, means plus function features may be expressed alternatively in terms of their corresponding structure, such as a suitably programmed processor and associated memory.
Furthermore, features implanted in hardware may generally be implemented in software, and vice versa. Any reference to software and hardware features herein should be construed accordingly.
As used herein, the term "label" preferably connotes any device which is capable of being fixed securely to a surface; preferably wherein the means of attachment is such that the label can be pressed against the surface in order to attach to the surface; more preferably wherein the means of attachment is adhesion (generally by means of an adhesive -preferably a pressure-sensitive adhesive -applied to or being part of the label) or heat-sealing.
As used herein, the term "permeable" preferably connotes permeable to the active component and/or any chemical emitted by or diffused from the active component. Alternatively or additionally, the term "permeable" may connote "gas-permeable" and/or "liquid-permeable".
As used herein, the term "environment" preferably connotes the surroundings of the label when in situ; more preferably the surrounding air; gases; or liquids; still more preferably (when in situ) the environment or atmosphere in a package or container (optionally including any product or other component within the package or container, but not including the surface on which the label is mounted). At used herein the term "micro climate" may be understood to be synonymous with the term "environment".
As used herein, the term "active" or "activated" preferably connotes a state in which a component is capable of substantively causing an effect on the surrounding environment and/or is in the process of substantively affecting the surrounding environment; for example by chemically reacting with at least a component of the atmosphere or itself, absorbing or emitting a component; and producing a thermal (or other such) effect.
As used herein, the term "thin film" preferably connotes a layer of material ranging from fractions of a nanometer (monolayer) to several millimeters in thickness. -6 -
At used herein the term "component" may be understood to be synonymous with the term "composition".
At used herein the term "container" may be understood to be synonymous with the terms "package," "pack," "bag," and "pouch".
The invention extends to methods, system and apparatus substantially as herein described and/or as illustrated with reference to the accompanying figures.
One or more aspects will now be described, by way of example only and with reference to the accompanying drawings having like-reference numerals, in which: Figure 1 is a schematic drawing of a label according to the present invention; Figure 2 shows the label in situ in a container; Figure 3 shows the form of labels following their manufacture; Figure 4 shows an exemplary system for applying a label to a container; Figure 5 shows an exemplary "form-fill-seal" system for forming a package incorporating a label; and Figure 6 shows an exemplary system for forming a blister pack incorporating a label.
Detailed description
Figure 1 is a schematic drawing of a label 100 according to the present invention. The label 100 is shown attached to a surface 102. The label 100 is formed from a plurality of layers, which are (in order from the layer closest to the surface 102 to the layer most far away from the surface): a first adhesive layer 104, a base layer 106, a second adhesive layer 108, and a permeable layer 110.
The base layer 106 is a thin film layer formed of a (generally non-permeable at sufficient thickness) polymer such as polyethylene terephthalate (PET), polypropylene (OPP) or polyethene (PE). The base layer 106 provides the structural body of the layer, and is configured to be attached to a surface 102 by means of the first adhesive layer 104. The first adhesive layer 104 is a layer of pressure-sensitive adhesive which is provided over at least part of a first side of the base layer 106 -generally, the adhesive is provided at least around a periphery of the base layer 106. The provision of the first adhesive layer 104 allows the label to function as a label, in that it can be attached to a surface for operation. The first -7 -adhesive layer 104 is preferably strong enough so as to affix the label "permanently" (i.e. such that it cannot be easily removed by a user without the use of tools) to the surface. The first adhesive layer 104 is generally formed of one of a heat sealed or pressure sensitive adhesive.
A second side (i.e. the other side to the first side) of the base layer 106 is at least partially covered (generally at least around the periphery) with the second adhesive layer 108. The second adhesive layer 108 serves to attach the base layer 106 to the permeable layer 110. The permeable layer 110 is a thin film layer which forms the interface between the label 100 and its surroundings. The permeable layer 110 is configured to be permeable at least to gas (and optionally also to liquid such as water), such that air particles in the environment can pass through it. Such permeability may be provided by either or both of the material of which the permeable layer 110 is formed and/or the particular construction of the permeable layer 110. In an example, the permeable layer 110 is formed from the same material as the base layer 106 (although optionally substantially thinner in order to provide the requisite permeability), thereby providing a mono-plastic construction for the label 100. In an example, the permeable layer 110 is formed of a gas permeable polymer. In another example, the permeable layer 110 is formed from a material which is not generally permeable (such as the same polymer materials as the base layer 106), but the permeable layer 110 comprises one or more apertures 114 (shown in dotted lines in Figure 1) to allow air (and optionally liquid particles) to pass through the permeable layer 110. The label 100 as a whole is thin and has a low profile -generally, the label 100 is less than 0.5 mm thick, and preferably less than 0.3 mm thick. Generally the label is between 0.1 mm and 0.3 mm thick, but may be even thinner depending on the particular application for the label.
The label 100 further comprises a cavity 112 over which the permeable layer 110 extends. The cavity 112 is open at the base layer 106 (away from the permeable layer 110, which in effect forms a back wall for the cavity) -in use, this opening of the cavity is sealed by the surface 102 thereby to form an enclosed space. The cavity 112 is formed by an aperture provided in the base layer 106, as well as the second adhesive layer 108 and (optionally) the first adhesive layer 104. The cavity 112 is for receiving a chemically active component for affecting the environment of the label 100, where the active component can interact with the environment via the permeable layer 110 (for example, by air particles permeating through the permeable layer 110 to interact with the active component, by chemicals emitted by the active component permeating out of the permeable layer 110, or by the active component itself permeating out of the permeable layer 110). -8 -
As shown in Figure 1, the cavity 112 in use forms an enclosed space which is defined by the permeable layer 110, first and second adhesive layers 104, 108, the base layer 106, and the surface 102 -but it will be appreciated that the enclosed space can be defined in several other ways and that the cavity 112 can be implemented in various other ways. For example, a further base layer may be provided under the aperture in the base layer 106. In general, the cavity 112 is defined by the base layer 106 and the permeable layer 110 at a minimum. Importantly, both the first and second adhesive layers 104, 108 are gas impermeable, like the base layer 106, so that in use the permeable layer 110 forms the sole interface between the enclosed space formed by the cavity 112 and the environment. Generally the surface 102 is also gas impermeable.
It will be appreciated that although the first and second adhesive layers 104, 108 are described as "layers", they may not be thin film layers in the sense of the base layer 106 and permeable layer 110 -they are described as such to clarify where they are disposed in the label 100. In one example, several "dots" of adhesive may be provided on the first and second side of the base layer 106, rather than complete layers. It will also be appreciated that the adhesive layers 104, 108 may extend only around the periphery of the base layer 106, such that the base layer 106 may contact the surface 102 at several points and/or the permeable layer 110 may contact the base layer 106 (unlike as shown in schematic Figure 1).
In use, the label 100 is initially deactivated (i.e. it does not substantially affect the surrounding environment). An external input is used to activate the label 100 in order start affecting the surrounding environment. This may allow the label 100 to be activated only at an appropriate time, e.g. only when attached to the surface 102 or immediately before attachment to the surface 102. This may be particularly helpful where it is desired that the active component does not affect the environment until shortly before the label 100 is in situ (e.g. within a sealed container) -for example to lengthen the lifetime of the active component.
The particular form of the external input and the activation depends on the active component used. In a simple example, the active component is simply inserted into the cavity 112 in order to activate the label 100 (where the label is previous inactive as a result of having no active component). In another example, the label 100 may already include the active component in the cavity 112, where the active component is in an inactive state (and so the label as a whole can be referred to as de-activated). Activation may then take place by a further active component being introduced into the cavity 112, which may cause the active component to become active by a chemical reaction. In a particular example, the further active component -9 -may be a catalyst which brings the active component from a low-activity state to a high-activity state by increasing the rate of a chemical reaction which is already ongoing.
Where the external input is an applied component (whether this is the active component itself or a further active component or catalyst), this is generally applied into the cavity 112 from the reverse side of the label (i.e. the side which abuts the surface 102 in situ). Such an external input of course occurs before the label is put in place. The external input may be by injection into the cavity 112. In use, this may allow for the applied component to be inserted immediately before the label is applied into a container or package, which may allow the concentration and type of component to be varied depending on the product being packed into the container or package. Surface tension may hold the applied component in the cavity 112 during the limited time during which the label 100 is activated and the label 100 is not sealed against a surface (or alternatively/additionally the label 100 may simply be kept with the opening of the cavity 112 facing upwards to avoid spillages).
Particular examples of active components which may be used with the label 100 will now be listed, as follows: * Desiccants (i.e. a hygroscopic substance used as a drying agent) may be used as an active component to reduce the presence of water in the environment (and also optionally also in any products in that environment). Use of a desiccant may be helpful in a container storing any product for which moisture may have an adverse effect, in particular hygroscopic products. Particular examples of products for which the provision of a desiccant may assist include dried foodstuff, pharmaceuticals, and electronics. Examples of desiccants which may be used as the active component include silica, activated charcoal, calcium sulfate, and calcium chloride. Desiccant active components may be used in particular with containers for milk powder, and dry foods and snacks.
* Oxygen scavengers (also referred to as 'oxygen absorbents') may be used as an active component to decrease the level of oxygen in the environment (or micro climate) of the package (and also optionally in any products in that environment). This may be particularly helpful in containers storing any products which may be adversely affected by oxidation, in particular food prone to rancidification, electronics, or pharmaceuticals.
Examples of oxygen scavengers which may be used as the active component include mixtures of ferrous carbonate and a metal halide catalyst (e.g. iron powder and sodium chloride), ascorbate, sodium hydrogen carbonate, citrus, and ascorbic acid. Where a mixture of ferrous carbonate and a metal halide catalyst is used, it will be appreciated that the metal halide catalyst may be the applied "further active component" as previously described. Oxygen scavenging active components may be used in particular with containers for meat and cheese, milk powder, and dry foods and snacks.
* Carbon dioxide absorbents may be used as an active component to reduce the decrease the level of carbon dioxide in the environment (and also optionally in any products in that environment). This may be particularly useful for foodstuffs which emit carbon dioxide, which may risk bursting a container in which the foodstuff is held if not resolved. The use of a carbon dioxide absorbent as an active component may allow the label 100 to be used as an alternative to a coffee degassing filter (and as an alternative to a bulk degassing process taking place prior to packaging) -this may be beneficial in that there is no need to align the label 100 with any component on the packaging, unlike in the use of a degassing filter (which is applied to the outside of a package and needs to be aligned to a hole or holes in the package). An example of carbon dioxide absorbent which may be used as the active component is soda lime (of various compositions).
* An antibacterial composition (such as carvacrol or sulphur dioxide, which is particularly applicable for dried fruits). Antibacterial active components may be used in particular with containers for meat and cheese, and pharmaceuticals.
* An emitter of a particular composition may be used as the active component, in particular where the emitter generates gas by catalytic action (where the catalyst is applied as an active component). This may be used, for example, to fill a container gradually over time with specific gas mixtures, or to release a preservative or antibacterial composition.
* A flavouring or additive for foodstuff may be used as the active component, for example when control of these additives is required on a pack by pack basis (e.g. the additives in the label 100 may be dynamically adjusted based on properties of product in each package).
* An aromatic or perfuming composition may be used as the active component, hence when a package is then first opened, enhanced aromas can greet the consumer.
In any case, the active component is configured to produce an effect on the environment gradually (typically over at least several days). This may be particularly advantageous where it is desired to maintain a particular condition of the environment or a product in the environment for as long as possible, as is commonly the case (in particular for foodstuff). The permeable layer 110 and/or the active component may be particularly adapted so as to allow only a slow effect in this regard. The active component and/or permeable layer 110 may also be configured on the basis of known different rates of absorption of certain gases over time -for example the concentration of the active component may be set accordingly.
As shown by the examples above, the active component may be a liquid or solid at room temperature, depending on the particular function required.
It will be appreciated that the amount and concentration of the active component used with the label 100 will be particularly adapted to each particular use-case of the label, in particular the product, function required, amount of product, and size of container.
Figure 2 shows the label 100 in situ in a container 200 (where the relatively thick label 100 depicted is simply for the purpose of visibility). The container 200 comprises a body 202 and a lid 204 (although it will be appreciated that the body 202 may be sealed by means other than a lid, for example by thermally bonding open ends of the body). The container is filled with product 206.
The label 100 may be attached to any surface within the container 200, but is preferably located away from where the product 206 is located in normal use of the container 200 (e.g. the label 100 may be located towards the top of the container 200) so as to avoid direct contact between the label 100 and the product 200, which could risk contamination of the product 206 by the active component in some circumstances e.g. if the permeable layer 110 is broken. The label 100 may also preferably be located towards an opening in the container 200 (before it is sealed), to allow for easy insertion of the label 100 into the container.
Figure 3 shows the form of labels 100 according to the present invention following their manufacture (where the cavity 112, which may or may not be visible depending on the materials used, is shown in dashed lines). The labels 100 are produced such that a plurality of labels 100 is formed on a continuous strip of release liner 116, where a single label 100 takes up substantially the width of the liner 116. The first adhesive layer 104 abuts the liner 116, -12 -such the label 100 is attached to the liner via the adhesive before it is picked from the liner and applied to a surface on which it is intended to be used. The liner 116 is generally formed of non-tearing polyester, or a similar material. The underside of the label liner 116 comprises an aperture (not shown) corresponding to the cavity, which allows an injected applied component to be applied just before application, activating the label 100 as described. Alternatively, the applied component may be injected directly through the liner 116 (without the use of a preexisting aperture).
Figure 4 shows an exemplary system 400 for applying a label 100 to a container 200. The liner 116a (including the labels 100) is provided in a coil, which is mounted on a rotating spindle 402 (which may be powered or unpowered) which serves to unwind the coil thereby to move the liner through the system. A further spindle 404 (which again may be powered or unpowered) is provided to receive the empty liner 116b (not including the labels), which is wound into a coil. Various guide rollers 406 are provided to direct the liner in the appropriate direction, and to orient the liner as required. Once the liner 116a is unwound from the spindle 402, it is moved such that it passes an applicator 408, which is configured to apply the applied component previously mentioned (for example by injection through an underside of the liner 116a into the cavity 112). The applicator 408 comprises a reservoir 410 for the active component, which is generally sealed to avoid contamination, loss, or involuntary activation of the applied component.
The label 100 may then be applied by high speed continuous or intermittent label application, for example as follows. Once the applied component is applied, the liner 116a is led such that it passes via a peeler 412, which peels each label 100 from the liner (for example by means of a member which is fed between the label 100 and the liner). The label 100 is then gripped by a handling means 414, which holds the label 100 by means of a generated vacuum. The handling means 414 is then used to apply the label 100 to a container by pressing the label 100 against the side of the container and then releasing the vacuum. This may be done in various ways -in the example shown in the figure, the handling means 414 is provided on an actuable pneumatic arm 416, which pivots and rotates on a pivoting table 418 thereby to move the label 100 to the appropriate place proximate an interior wall of a container 200 on a neighbouring conveyor belt 420 (which is configured so as to coordinate with the arm 416 and pivoting table 418). Once the container with the applied label 100 moves away from the system 300, it may be sealed as the immediate next step in the packaging process (for example by heat sealing or by a lid being applied). The use of the system 400 in a manufacturing process may allow for many labels 100 to be activated and applied to respective containers 200 quickly.
The system 400 may be based on existing applicator systems for thin film coffee degassing valves. The applied component applicator may be a suitably adapted oil applicator (in particular where the reservoir is adapted to be sealed and secure (and optionally airtight) in light of the possible increased volatility of the applied component as compared to oil). The system 400 may be used in continuous operation, or alternatively may be used intermittently. Motors (e.g. stepper motors) and sensors may be used with the system 400 in order to power the system and ensure it is functioning correctly.
It will be appreciated that the label 100 may also be incorporated into other kinds of manufacturing methods for packaging. Figure 5 shows an exemplary "form-fill-seal" system 500 for forming a package incorporating a label 100. Such systems are used for forming flexible sealed packages or bags including product, and are commonly used for packaging foodstuff. A plastic film "web" 504 is fed from a spindle 502 (via guide rollers 506) to a forming tube 512. The web 504 is drawn around the forming tube 512 before passing through a sealing unit 514, thereby to form a complete sealed package 200. Immediately before the web 504 enters the sealing tube, a handling means 510 applies a label 100 onto the web 504, such that the label adheres to the web. The label 100 may already be activated (immediately before application), or an applicator 408 may be provided to activate the label before the part of the web 504 including the label 100 is formed around the forming tube 502. The package 200 is then formed as described with the label 100 inside of it, thereby producing a sealed package 200 including an activated label 100.
Figure 6 shows an exemplary system 600 for forming a blister pack 200 incorporating a label 100. A blister pack is a type of container including a cavity or pocket backed by a lidding material, commonly used in packaging pharmaceuticals, consumer products, and certain foodstuff (e.g. meat and cheese). In the system 600, a web 608 is drawn from a spindle 602 and is formed into a "blister (or a plurality thereof) by a thermoformer 606. A product filler 610 then fills the blisters with product 206 as the blisters are drawn past it. Lidding material 612 (e.g. foil, plastic, or even paper) is drawn from a spindle 604, and a handling means 614 applies a label 100 onto the lidding material 504 as it is drawn past, such that the label adheres to the lidding material. The label 100 may already be activated (immediately before application), or an applicator 408 may be provided to activate the label once applied. The lidding material 612 is joined to the web 608 by a sealing means 612 such that the location of the label 100 on the lidding material 612 is aligned with the "blisters" of the web 608. Complete containers may then be cut by a cutting means 618.
It will be appreciated that the abovementioned methods are merely exemplary -the label 100 may be activated and incorporated into sealed containers or packages by many other mechanisms. In particular, labels 100 may readily be applied to the particular application of pre-formed trays with lids (for example for packaging foodstuff such as cheese, meat, fish, and ready meals). For example, a similar system to the system 600 for forming a blister pack may be used, in which instead of a spindle 602 there is provided a plurality of preformed trays moving on a conveyor belt. Lids (including labels 100, optionally attached as described with reference to Figure 6) may be applied to the trays as they move along the conveyor belt.
Alternatives and Extensions Although the invention has generally been described with reference to the use of a single active component in each use-case, it will be appreciated that the described broad categories of active components will overlap to a certain extent. For example, certain desiccants are also carbon dioxide absorbers. In some example, mixtures of different kinds of active components may be used.
In an alternative, the arrangement of layers in the label 100 may differ from that described with reference to Figure 1. For example, the permeable layer 110 may extend wholly over the base layer 106 and the sides of the base layer such that the permeable layer 110 is in itself attached to the surface on which the label 100 is mounted, optionally by heat-sealing to the inside surface of a container.
In an alternative/addition to the described arrangement of the layers of the label 100, the sides of the label 100 may be permeable to allow the active component and/or chemicals emitted by the active component to permeate out of the label. For example, one or more apertures may be provided in the sides of the labels (as an alternative or as an addition to the aperture 114 in the permeable layer 110) -in other words, the sides of the label 100 may be un-laminated. Such one or more apertures may be provided in the second adhesive layer 108 and/or the second adhesive layer 108 may be discontinuous in this regard.
In a further alternative, the label 100 may not be formed of thin film materials. For example, the base layer 106 and/or the permeable layer 110 may be formed of fabrics.
In an alternative, the label 100 may attach to a surface by means other than adhesive. For example, the label may be pinned to a surface by use of a plurality of fasteners. Alternatively, the label may include a formation arranged to engage with a corresponding formation provided on the surface to which it attaches.
Where an applied component is used as the external input, it will be appreciated that this could be introduced into the cavity 112 in various different ways to those described. For example, where the applied component is a liquid, it may simply be applied to the outside of the permeable layer 110 such that it permeates through the permeable layer 110.
Although the invention has principally been described with reference to the external input being the application of a component to the label 100, alternative inputs may instead be used. For example, the label and/or activate component may be irradiated or heated in order to cause activation, or a physical force may be applied (for example to break a frangible element in the label containing the active component and/or a catalyst) It will be appreciated that the system 400 and the described method of use is merely exemplary, and many alternatives will be apparent to the skilled person. In particular, the label 100 may be activated only once in situ in the container 200, for example by an applicator 408 being moved into place. This may increase the complexity of the manufacturing somewhat, but may reduce the time during which the label 100 is both active and not sealed into a container 200.
It will be understood that the invention has been described above purely by way of example, and modifications of detail can be made within the scope of the invention.
Each feature disclosed in the description, and (where appropriate) the claims and drawings may be provided independently or in any appropriate combination.
Reference numerals appearing in the claims are by way of illustration only and shall have no limiting effect on the scope of the claims.

Claims (25)

  1. Claims 1. A label for affecting the surrounding environment, comprising: a base layer for attachment to a surface; a permeable layer extending over at least pad of the base layer; and a cavity defined by the base layer and the permeable layer for receiving a chemically active component for affecting the environment of the label; wherein the label is configured to be converted, by an external input, from a deactivated state into an activated state thereby to affect the surrounding environment.
  2. 2. A label according to Claim 1, wherein the external input comprises the application of an applied component.
  3. 3. A label according to Claim 2, wherein the cavity comprises an opening which, in use, is sealed by a surface to which the base layer is attached.
  4. 4. A label according to Claim 3, wherein the external input comprises the application of the applied component into the opening of the cavity.
  5. 5. A label according to any of Claims 2 to 4, wherein the external input comprises the application of the applied component onto the permeable layer, preferably wherein the applied component is configured to permeate at least in part through the permeable layer into the cavity.
  6. 6. A label according to any of Claims 2 to 5, wherein the applied component comprises the active component.
  7. 7. A label according to any of Claims 2 to 5, further comprising the active component, wherein the active component is configured to be converted, by an external input, from a deactivated state into an activated state thereby to affect the surrounding environment.
  8. 8. A label according to Claim 7, wherein the applied component is one of: a component configured to activate the active component by reaction; and a catalyst.
  9. 9 A label according to any preceding claim, wherein the label is configured to be converted from a deactivated state into an activated state when the base layer is attached to a surface.
  10. 10. A label according to any preceding claim, wherein the label is configured to be converted from a deactivated state into an activated state shortly before the base layer is attached to a surface.
  11. 11. A label according to any preceding claim, wherein the base layer and the permeable layer are thin films.
  12. 12. A label according to any preceding claim, wherein the base layer and the permeable layer are formed of the same material.
  13. 13. A label according to any preceding claim, wherein the permeable layer comprises one or more apertures.
  14. 14. A label according to any preceding claim, wherein the permeable layer is of a reduced thickness relative to the base layer, such that the permeable layer is permeable.
  15. 15. A label according to any preceding claim, wherein at least one of the base layer and the permeable layer is a polymer such as polyethylene terephthalate (PET), polypropylene (OPP) or polyethene (PE).
  16. 16. A label according to any preceding claim, wherein the base layer comprises an aperture, such that, in situ, the cavity defines an enclosed space defined between at least the base layer, the permeable layer, and the surface to which the base layer is attached.
  17. 17. A label according to any preceding claim, wherein the thickness of the label is less than 1 mm; preferably less than 0.5 mm; more preferably less than 0.3 mm; still more preferably less than 0.2 mm.
  18. 18 A label according to any preceding claim, further comprising an adhesive layer extending over at least part of the base layer on the other side of the base layer to the side which the permeable layer extends over, thereby to allow the base layer to adhere to a surface; and optionally further comprising a further adhesive layer extending over at least part of the base layer thereby to attach the permeable layer to the base layer.
  19. 19. A label according to any preceding claim, wherein the active component comprises at least of: a desiccant; an oxygen scavenger; a carbon dioxide absorbent; an antibacterial composition; an emitter of a particular composition (in particular by catalytic action); a flavouring for foodstuff; an additive for foodstuff; and a perfuming composition.
  20. 20. A method of affecting the environment within a container, comprising the steps of: providing an unsealed container and a label for affecting the environment surrounding the label; applying an external input thereby to convert the label from a deactivated state into an activated state; applying the label to an interior surface of the container; and sealing the container.
  21. 21. A method of affecting the environment within a container, comprising the steps of: providing component parts of a container and a label for affecting the environment surrounding the label; applying an external input thereby to convert the label from a deactivated state into an activated state; applying the label to a component part of a container which, once formed, corresponds to an interior surface of the container; and forming a sealed container including the label on an interior surface.
  22. 22. A method according to Claim 20 or 21, wherein the label is a label according to any of Claims 1 to 19.
  23. 23. A method according to any of Claims 20 to 22, wherein the label is provided on a liner having a plurality of labels.
  24. 24. A method according to Claim 23, wherein the liner comprises an aperture to allow an application of an external input through the liner and into the cavity.
  25. 25. A method according to Claim 23 or 24, wherein activating the label comprises, by use of an applicator, applying an applied component to the label; preferably while the label is on the liner.
GB1904457.7A 2019-03-29 2019-03-29 A label for affecting the surrounding environment or micro climate within a package Withdrawn GB2582660A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6139935A (en) * 1991-01-07 2000-10-31 Multisorb Technologies, Inc. Oxygen-absorbing label
US6214095B1 (en) * 1999-07-06 2001-04-10 Donaldson Company, Inc. Adsorbent pouch for removal of gaseous contaminants
US20030175465A1 (en) * 2002-03-13 2003-09-18 Yuichi Watanabe Oxygen-absorbing label
WO2005033676A1 (en) * 2003-10-03 2005-04-14 E.I. Dupont De Nemours And Company Oxygen scavenging compositions and methods of use
US20090029078A1 (en) * 2007-07-25 2009-01-29 Gohil Rameshchandra M Oxygen scavenging composition, coating composition and package containing transition metal oxide

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6139935A (en) * 1991-01-07 2000-10-31 Multisorb Technologies, Inc. Oxygen-absorbing label
US6214095B1 (en) * 1999-07-06 2001-04-10 Donaldson Company, Inc. Adsorbent pouch for removal of gaseous contaminants
US20030175465A1 (en) * 2002-03-13 2003-09-18 Yuichi Watanabe Oxygen-absorbing label
WO2005033676A1 (en) * 2003-10-03 2005-04-14 E.I. Dupont De Nemours And Company Oxygen scavenging compositions and methods of use
US20090029078A1 (en) * 2007-07-25 2009-01-29 Gohil Rameshchandra M Oxygen scavenging composition, coating composition and package containing transition metal oxide

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