WO2014102556A1 - Récipient avec dispositif d'indication - Google Patents

Récipient avec dispositif d'indication Download PDF

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Publication number
WO2014102556A1
WO2014102556A1 PCT/HU2012/000144 HU2012000144W WO2014102556A1 WO 2014102556 A1 WO2014102556 A1 WO 2014102556A1 HU 2012000144 W HU2012000144 W HU 2012000144W WO 2014102556 A1 WO2014102556 A1 WO 2014102556A1
Authority
WO
WIPO (PCT)
Prior art keywords
container
indicator
indicating device
cap
container according
Prior art date
Application number
PCT/HU2012/000144
Other languages
English (en)
Inventor
Viktor SERES
Original Assignee
Ideapool Kft.
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 Ideapool Kft. filed Critical Ideapool Kft.
Priority to PCT/HU2012/000144 priority Critical patent/WO2014102556A1/fr
Publication of WO2014102556A1 publication Critical patent/WO2014102556A1/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
    • B65D79/00—Kinds or details of packages, not otherwise provided for
    • B65D79/02—Arrangements or devices for indicating incorrect storage or transport
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
    • G01N31/22—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators

Definitions

  • the invention relates to a container with an indicating device.
  • JP 2004 359 319 A solution is disclosed, in which a pH indicator separated from the rest of the container by a gas permeable film is located in a transparent cap of a liquid storage container.
  • the pH indicator serves for detecting the presence of such a gas which is released when the material stored in the container becomes spoiled.
  • the pH indicator is separated from the top part of the cap by a gas permeation preventing layer.
  • KR 20030096077 A food freshness sensor device is disclosed which is fitted into the wall of a sealed container. The device is separated from the stored material by a membrane being permeable by the ions to be detected and by the solvent, and the device is covered by a semi-transparent layer from the outside.
  • JP 2002 257 813 A a quality control device fitted inside the food packaging is disclosed, and the said device is separated from the food by a semi-permeable membrane.
  • WO 2006/032025 A1 a food quality indicator mountable in the wall of a storage container is disclosed, and in WO 2005/080964 A1 a food quality indicator is disclosed which can be fixed onto a package.
  • UA 74848 C2 a pH controller is disclosed that can be fixed to a packaging.
  • DE 10 2004 019 427 A1 a pH indicator is disclosed which can be inserted in a cap.
  • DK 459684 an indicator is disclosed which measures the pH level of milk.
  • IE 20060034 A2 a method is disclosed on the basis of which the freshness of food is examined by microbial growing.
  • such a packaging foil which has a semi- transparent outer layer, and the food is in contact with a pH-sensitive layer.
  • a common disadvantage characterising some of the above solutions is that the packaging or storage container applied so far for a given food has to be changed substantially in order to install the indicating device, i.e. the indicating device cannot be matched to the already existing packaging systems, and may not be adapted to the existing containers either.
  • the liquid may eventually be trapped between the components of the indicating device. The trapped liquid may get spoiled sooner, because it is either stagnated or it is heated up easier in the space closer to the wall. The fact that this small volume of liquid is spoiled sooner than the whole liquid volume may trigger a false alarm, because in the given case the indicating device only senses the quality of the trapped and stagnated liquid.
  • the device fitted into or fixed to the container for the purpose of indicating the quality of food stored in the container does not directly measure the pH level of the examined material.
  • the indicating device should lend itself to being adapted simply and with low cost to practically any container, including the already existing containers and packaging systems.
  • a change in quality means any parameter or composition change of the contained material.
  • the primary object of the invention is to provide a container with such an indicating device which is free of the disadvantages of the prior art solutions to the greatest possible extent.
  • a further object of the invention is to provide a container with an indicating device which measures directly the change of the quality of liquid or gas material contained in the container, and can be adapted to already existing packaging systems after a small alteration of the design at the most.
  • the contained liquid or gas may be the material stored in the container itself, for example food, or a material surrounding or located next to the material stored in the container.
  • the contained material is liquid or gas, by way of example a protective liquid or protective gas, preferably arranged for preserving the food stored in the container or for other purposes.
  • the object of the invention furthermore is to provide a container with such an indicating device, which prevents the trapping or stagnation of the liquid or gas contained in the container, thereby avoiding the triggering of false alarm by the indicating device.
  • the indicator applied is of non-bleeding type. If a solid material is stored in the container, the solid material and the indicator are preferably arranged in relation to each other in such a way that the medium arranged next to the solid material should be allowed to get into a contact with the indicator.
  • the object of the invention furthermore is to develop such a solution being available in a broad circle, cost efficiently and comfortably for checking the quality of foodstuff, by which the volume of unnecessarily discarded food may be reduced, leading to a cost saving.
  • the indicating device of the container according to the invention enables the direct measurement of change in the quality of material stored in the container, for example food, if it is in liquid or gas form.
  • the change in the quality of liquid or gas arranged next to the material stored in the container can be measured by the indicating device, and this is directly related to the change in the quality of the stored material.
  • This latter approach characterises solid stored materials, but it may also happen by way of example that the stored material is a liquid, but the indicating device is used for measuring the change in the quality of the gas in contact with the said indicating device.
  • Fig. 1 is a schematic three-dimensional view of an embodiment of the container with indicating device according to the invention
  • Fig. 2 is a cross-sectional side view of the ring-insert applied in one embodiment of the container with indicating device according to the invention
  • Fig. 3 is a top view of the ring-insert shown in Fig. 2,
  • Fig. 4 is a cross-sectional view demonstrating the insertion of an indicating device associated with the container according to the invention into the cap of the container,
  • Fig. 5 is a cross-sectional view of the structure configured according to Fig. 4
  • Fig. 6 is a cross-sectional view demonstrating the insertion of a further indicating device associated with a container according to the invention into the cap of the container,
  • Fig. 7 is a cross-sectional view of the structure configured according to Fig. 6, and
  • Fig. 8 is a perspective view of a container with a further indicating device.
  • the invention is a container used in the food industry and designed for holding liquid or gas material, fitted with an indicating device adapted for inspecting the condition and freshness of the material contained in the container or through this contained material those of the stored material in contact with the contained material, for example on the basis of the chemical composition of the contained material, and especially for indicating its pH level. Consequently, the indicating device of the container according to the invention shows the change in the quality of a liquid or gas material, and as described above, this material can be by way of example the stored material itself, or a liquid or gas surrounding or being in contact with the stored material.
  • the indicating device fitted in the inner space of the container according to the invention comprises a suitable indicator.
  • the material contained in the container is e.g.
  • a liquid food especially preferably milk or a dairy product, or fruit juice, or in case the stored material is solid food, for example meat or fish, the contained material is the surrounding liquid or gas.
  • the container e.g. may also be a tin canister.
  • the configuration of the container according to the invention in accordance with the physical condition and other considerations of the material contained or stored therein, may be different, and the various containers can be provided with indicating devices of various configurations.
  • the container with indicating device according to the invention has been developed by way of example to inspect the quality of milk stored therein, i.e.
  • the indicating device preferably senses the changing of the pH level, i.e. it preferably comprises a pH indicator, but it is also conceivable to measure other characteristics of the milk or of the air above the milk.
  • the indicating device contains such an indicator, which indicates a change in the chemical composition or parameters of the relevant stored material or a change in those of the liquid or gas contained in the container next to the stored material.
  • the indicating device comprises a pH indicator
  • the change in the pH level of the liquid or gas contained in the container can be traced, i.e. preferably it is not the absolute pH level which is indicated, but the shifting of the pH level into a range which is associated with the deteriorated quality of the contained material.
  • the appropriate condition of the milk can be inspected relatively simply by a pH measurement.
  • the pH level of fresh cow milk varies in the 6.5 to 7.2 pH range, but below pH 6.5 lactose is turned into lactic acid in the milk, and at 4.6 pH the milk curdles, i.e. the casein coagulates.
  • the pH indicator of the container with the indicating device according to the invention will raise an alarm when the pH level of the milk stored in the container leaves the value range characterising fresh cow milk, and goes into a range where because of the pH levels the consumption of milk is no longer recommended, for example the pH level falls below the critical 4.6 value, but a different limit is also conceivable.
  • a pH indicator may also be selected for the container with the indicating device according to the invention, which displays a change in the quality of other contained materials.
  • a known, so-called non-bleeding type indicator is applied for the container with indicating device according to the invention. It is the main characteristic of the non- bleeding type of indicators that the indicator material is practically not dissolved, i.e. during the test it practically does not contaminate the examined contained material.
  • Non-bleeding type indicator by way of example, the chemical bond between the applied colouring agent and the indicator prevents dissolving.
  • Non-bleeding type of indicators may also be implemented with active and passive electronic sensors (for example chemical sensors or biosensors), as well as with intelligent materials.
  • the electronic detectors and sensors adapted for detecting a change in the quality of contained material and applied as non-bleeding indicators have a common feature with conventional non-bleeding indicators in that during the testing of chemical procedures, they respond to the change in the status of the material and would not be dissolved therewith. Furthermore, their advantage against traditional indicators is that they are much more accurate in indicating the values characterising the material contained in the container, i.e. the quality and quantity of chemical components relevant from the aspect of testing quality.
  • the sensors may be of the active or passive type. Passive sensors do not require any external power source during their known operation. On the contrary, active sensors need an external power source or excitation signal, because their operation is based on the changing of their electric characteristics in the function of the characteristics of the environment surrounding them.
  • the non-bleeding indicators comprising intelligent materials adapted for sensing the change in the quality of contained material are able to inform the user about the changing of the status of the contained material.
  • the intelligent character of the indicator may stem from the special characteristics of the polymer carrier or the added material, dye, etc., as a result of which the indicator does not only detect, but also responds to the change in quality (e.g. it changes its colour, if the pH level rises).
  • the intelligent character may be accomplished in several ways, for example: either during polymer creation (polymerisation, polycondensation, polyaddition) are such monomers, molecules and atoms added to the material of the indicator which by itself carries the desired characteristic ensuring the intelligent character or subsequently this is carried out by the direct application or addition of the intelligent component, which can be executed by grafting or similar methods.
  • Non-bleeding type indicators guarantee the exact tracking of the change in quality, i.e. during the application of pH indicator the secure distinguishing of each pH value, i.e. the proper pH sensitivity of the indicator.
  • the indicator of the indicating device according to the invention can preferably be a pH indicator, i.e. in certain embodiments of the invention, the change in the pH level of the liquid stored in the container is tracked by the indicating device.
  • the preferred embodiments of the invention will furthermore be disclosed with a pH indicator.
  • it is intended to distinguish consumable foodstuff stored in the container from deteriorated quality foods unsuitable for consumption by applying two different colours on the pH indicator, but a multicolour scale may also be applied in the pH indicator.
  • the pH indicator switches from a given colour to another colour, if the pH of the liquid contained in the container and in contact with the indicator, for example milk, reaches a level from which the liquid can be considered to have an inferior quality.
  • the indicator for example milk
  • Other displays obvious to the naked eye are also conceivable to demonstrate that the pH level of the stored liquid has moved into the value range characterising deteriorated quality liquids. Therefore, only a dramatic change belonging to the boundary of the range and no interim change can be preferably seen on the pH indicator.
  • the invention may also be applied to other containers.
  • the demonstrated location of the indicating device can be generalised to fitting on other types of containers in a way obvious to a skilled person.
  • the container with indicating device according to the invention may be any currently marketed container, for example a sack or a transparent plastic bottle closed by a threaded cap, a box, glass or a tin canister. According to the invention, the cap closing the container is also considered to be part of the container.
  • the fixing device designed preferably for fixing the indicating device is formed as a ring-insert secured by form fitting in the lid part of the cap.
  • one part of the cap, to the inner side of which the pH indicator is fixed is preferably transparent at least partly. It is conceivable to apply such a cap in certain embodiments, which does not have a transparent part. However, in these embodiments, a change in the quality of the examined material can be determined only by removing the cap and looking into it.
  • the original container without indicating device has to be changed to make sure that the cap as described above is at least partly transparent. Further requirements imposed on the cap are described below; it is emphasised that most of the caps on the market meet already the requirements detailed below, and hence it is not necessary to modify them in order to enable the fitting of the indicating device.
  • the container according to tne invention is at least partly transparent (plastic bottle, sack).
  • the indicating device or pH indicator associated with the container according to the invention can be fixed in a well visible way by ultrasonic welding to the inner surface of the container.
  • the indicating device or pH indicator may also be fixed to the inner wall of an already finished container.
  • thermoplastics due to the absorbing of vibration energy or its reflection from the other piece, as well as the generating of frictional heat, the environment of the bond is heated up. As a result of vibrations, the material is melted locally and in a very short time an insoluble bond is established. The precondition of this is that the melting temperatures of work pieces should be nearly the same.
  • the quality of the weld can be well-regulated, and thanks to the energy transfer covering a small area of the weld, it is very uniform.
  • both options are open for mounting the indicating device.
  • the colour of the pH indicator shows the condition of the liquid or gas surrounding the stored liquid or stored solid.
  • Fig. 1 shows a container 14 with an indicating device 10 according to the invention.
  • the container 14 has a cap 22, and it is adapted for storing a liquid material.
  • In the lid part of the cap 22 at least partly transparent surface part 15 is provided.
  • the indicating device 10 shown by a dotted line in the figure can be examined from outside the container 14 with naked eye.
  • Fig. 2 shows in a cross-sectional side view a ring-insert 16 constituting the part of the indicating device 10.
  • the ring-insert 16 is adapted for holding a pH indicator, and the said ring-insert has a circular edge 18 for holding the pH indicator spaced apart from the lid part.
  • Fig. 3 shows a top view of the ring-insert 16, and again shows the edge 18.
  • Fig. 4 shows the insertion of the parts of the indicating device 10 into the cap 22.
  • the pH indicator 20 shown in the figure fits into the edge 18 of the ring-insert 16. Consequently, in the present embodiment, the indicating device 10 further comprises a fixing element for securing the pH indicator 20 to the inner wall of the container 14, and this is formed as the ring-insert 16, Openings 28 are formed in the pH indicator 20.
  • the ring-insert 16 can be snapped or screwed into the cap 22 in a way that the edge 18 holds the pH indicator 20.
  • the lid part of the cap 22 is the at least partly transparent surface part 15.
  • the pH indicator 20 is arranged in the cap 22 in a way that it can be observed from the outside through the at least partly transparent surface part 15.
  • the ring-insert 16 is formed with an outer diameter having essentially the same size as the inner diameter of the cap 22, and the ring-insert 16 is held by the lid part side end-thread of the inner threads of the cap 22.
  • the ring-insert 16 can be preferably screwed into the inner thread of the cap 22 and when it is screwed in, it is fixed by the cap 22.
  • the edge 8 of the ring-insert 16 has such a configuration that the pH indicator 20 is fixed by form fitting therein. Therefore, after fixing the ring-insert 16 into the cap 22, the pH indicator 20 is not displaced, and it may not even be removed without damaging the ring-insert 16 or the pH indicator 20.
  • Fig. 5 shows the cap 22 fitted with the indicating device 10.
  • the pH indicator 20 is arranged so as to provide an intermediate space part 26 between the pH indicator 20 and the inner wall of the container 14, more specifically with the transparent surface part 15.
  • the openings 28 interconnect the intermediate space part 26 and the remaining part of the inner space of the container 14, so as to allow the flow of the contained material.
  • the openings 28 are formed in the pH indicator 20 to enable passing the contained material through the intermediate space part 26, and to prevent the stagnation and trapping of the contained liquid or gas material.
  • the openings 28 are formed in a way that the contained material may flow around the pH indicator 20.
  • the quality of trapped and stagnated material would deteriorate faster, because it would not receive appropriate cooling and its pH would fall below the critical pH level associated with quality deterioration much earlier than the pH level of the material stored in the container 14.
  • the presence of stagnated and trapped material would also contribute to the deteriorating quality of the material stored in the container 4, for example in the case of storing liquid, of the complete liquid volume, moreover the triggering of an eventual false alarm.
  • the gradually increasing local concentration of the trapped gas may affect adversely the accuracy of measurement carried out by the indicator. If it was intended to seal hermetically by the pH indicator 20 the intermediate space part 26, any small sealing defect could lead to the trapping of the material.
  • the risk of trapping the contained material is preferably eliminated by enabling material flow.
  • the flow of the examined material through the intermediate space part 26 is advantageous in the case of the embodiments having a transparent surface part 15, because in this case both sides of the pH indicator 20, i.e. the side seen from the outside as well, contact with the examined material. Thereby, indication and the detection of a change in the status of the pH indicator 20 will be more reliable.
  • a pH indicator 20 is used in the indicating device 10 according to the invention, which does not change its colour until the pH of the examined material reaches a critical level, but when its colour changes as a result of exceeding the critical pH value, the colour entailed by the change is not altered any more.
  • Using such a type of pH indicator 20 is especially beneficial, because if the quality of the examined material had changed, i.e. the quality of the stored material had deteriorated and this was detected by the pH indicator 20, then this can be found out any time later on by the visual examination of the pH indicator 20.
  • Fig. 6 shows a cap 22' having a different configuration from that of the cap 22 shown in Figs. 4 and 5.
  • the ring-insert 16 has a smaller outer diameter than the inner diameter of the cap 22' and it is fixed, by way of example with a form fitting support, by an annular edge 24 having essentially the same inner diameter as the outer diameter of the ring-insert 16, where said edge is located on the inner wall of the lid part of the cap 22'.
  • the size of the pH indicator 20 is defined by the inner diameter of the edge 18. In the case of the embodiment shown by Fig. 6, consequently the indicating device 10 is snapped as shown in the figure into the edge 24 of the cap 22', where the pH indicator 20 is inserted into the edge 18 of the ring-insert 16.
  • Fig. 7 shows the cap 22' fitted with the indicating device 10 assembled according to Fig. 6.
  • the role of openings 28 enabling material flow between the intermediate space part 26 and the remaining part of the inner space of the container 14 is the same as mentioned in association with Fig. 5.
  • Figs. 5 and 7 The embodiment shown by Figs. 5 and 7 is conceivable without the transparent surface part 5.
  • the pH indicator 20 cannot be observed from outside the container 14, if the cap 22 or the cap 22' closes the container 14. If, however, the cap 22 or the cap 22' is removed from the container 14, the eventual discolouring of the pH indicator 20 can be observed.
  • the cap 22 or the cap 22' is formed with or without the transparent surface part 15, it is to be ensured that the pH indicator 20 is exposed to the contained material prior to taking its reading.
  • Fig. 8 shows a schematic view of a container 14' with a further preferred indicating device 10'.
  • ultrasonic welding is used to secure on the side of the container 14' a pH indicator 20' from the inside, preferably fixing for example its edge to the inner wall of the container 14'.
  • the pH indicator 20' has openings similarly to the embodiments described above.
  • a transparent surface part 15' is provided in the wall of the container 14' to make sure that the pH indicator 20' of the indicating device 10' arranged behind the transparent surface part 15' is observable from the outside.
  • the pH indicator 20' may be fixed also by means of a separate fixing element to the inner wall of the container 14'.
  • the fixing element created by ultrasonic welding is designed in a way that the openings 28' enable the flow of the material through an intermediate space part (not shown in the figure) established between the wall of the container 14' and the fixing element.
  • the pH indicator 20' it is not necessary for the pH indicator 20' to have openings.
  • the openings 28' preferably are formed in the fixing element, but the openings 28' may also be formed by the non-continuous fixing of the fixing element or the pH indicator 20' to the inner wall of the container 14'. Forming the openings 28' is also beneficial, because with the free flow of the examined material the faulty operation stemming from the defects of hermetic welding can be avoided.
  • Fixing by ultrasonic welding can be applied in case of an at least partly transparent container, by way of example a sack or bag or a plastic bottle, configured to enable observation of the indicating device 0' from outside.
  • the ring-inserts to be fitted into the caps are preferably made by injection moulding technology.
  • the injection moulded piece can be used after a short cooling period. Once the ring-insert is finished, i.e. when it is cooled to the appropriate temperature, the pH indicator can be inserted into the ring-insert.
  • the above described methods of creating the openings can be combined.
  • Such an embodiment is conceivable, in which both the fixing element, a fixing element created either by a ring-insert or by ultrasonic welding, and the indicator have openings.
  • the pH indicator is provided with openings may also be combined by the non-continuous fixing of the fixing element to the inner wall of the container.
  • Using the openings in several various ways in the same embodiment is advantageous because in this way the intermediate space is all the more permeable for the material, and therefore the trapping of the material can be more efficiently prevented.

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  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Biophysics (AREA)
  • Mechanical Engineering (AREA)
  • Molecular Biology (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)

Abstract

L'invention concerne un récipient (14) avec un dispositif d'indication (10), conçu pour contenir un liquide ou un matériau gazeux. Le dispositif d'indication (10) comprend un indicateur fixé à la paroi intérieure du récipient (14), l'indicateur étant agencé afin de ménager un espace intermédiaire entre l'indicateur et la paroi intérieure du récipient (14). Des ouvertures reliant l'espace intermédiaire et la partie restante de l'espace intérieur du récipient (14) sont formées pour permettre l'écoulement du matériau et l'indicateur est du type sans sortie de matière.
PCT/HU2012/000144 2012-12-27 2012-12-27 Récipient avec dispositif d'indication WO2014102556A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/HU2012/000144 WO2014102556A1 (fr) 2012-12-27 2012-12-27 Récipient avec dispositif d'indication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/HU2012/000144 WO2014102556A1 (fr) 2012-12-27 2012-12-27 Récipient avec dispositif d'indication

Publications (1)

Publication Number Publication Date
WO2014102556A1 true WO2014102556A1 (fr) 2014-07-03

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018116294A1 (fr) * 2016-12-19 2018-06-28 Zur Granevitze Dispositifs pour surveiller la fraîcheur de produits alimentaires et procédés d'utilisation de ceux-ci
US10318781B2 (en) 2015-03-30 2019-06-11 Temptime Corporation Two dimensional barcode with dynamic environmental data system, method, and apparatus
US10546172B2 (en) 2015-03-30 2020-01-28 Temptime Corporation Two dimensional barcode with dynamic environmental data system, method, and apparatus
CN113811760A (zh) * 2019-05-10 2021-12-17 埃科莱布美国股份有限公司 用于消毒应用的pH敏感型颜色指示器
US11734539B2 (en) 2021-04-05 2023-08-22 Temptime Corporation Dynamic optical property windows in indicia with sensors
US11959867B2 (en) 2018-04-26 2024-04-16 Diversey, Inc. Smart vessel and filling station with product quality monitoring and alerts

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KR20030096077A (ko) 2002-06-15 2003-12-24 박상규 식품의 신선도 표시기
JP2004359319A (ja) 2003-06-06 2004-12-24 Morinaga Milk Ind Co Ltd 密封包材、包装容器および包装体
WO2005080964A1 (fr) 2004-02-13 2005-09-01 Peters Daniel F Etiquette indiquant l'etat d'un produit alimentaire
DE102004019427A1 (de) 2004-04-19 2005-11-03 Karda Projektentwicklung Und Beratung Ohg In Verpackungen integrierter oder angebrachter Frischetester auf Basis der pH-Wert-Messung für Lebensmittel
WO2006032025A1 (fr) 2004-09-13 2006-03-23 Food Quality Sensor International, Inc. Indicateur de qualite d'aliments
US20060121165A1 (en) 2002-09-16 2006-06-08 Morris Roger J Food freshness sensor
EP1715337A1 (fr) * 2005-04-20 2006-10-25 IEE INTERNATIONAL ELECTRONICS & ENGINEERING S.A. Patch pour la detection de fuites
IES20060034A2 (en) 2006-01-16 2007-07-25 Aisling Judge A biological food contamination indicator
DE102006046240A1 (de) 2006-09-28 2008-04-10 Reinhard Klose Verpackungsfolie für Lebensmittel und Verfahren zur Herstellung der Verpackungsfolie
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Publication number Priority date Publication date Assignee Title
DE806515C (de) * 1948-10-02 1951-06-14 Anton Kau Einkochgefaess
DK459684A (da) 1983-01-28 1984-09-26 Dairyland Food Lab Konserveringsmiddel med farveindikator
WO1993015402A1 (fr) * 1992-02-04 1993-08-05 Bo Holte Appareil indiquant la presence de co2 et procede de mesure et d'indication d'une activite bacterienne dans un recipient ou un sac
JP2002257813A (ja) 2001-02-14 2002-09-11 Sokei Boku 食品品質インジケータ，食品用包装紙及び食品用包装容器
KR20030096077A (ko) 2002-06-15 2003-12-24 박상규 식품의 신선도 표시기
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JP7282919B2 (ja) 2019-05-10 2023-05-29 エコラボ ユーエスエー インコーポレイティド 消毒用途向けのｐＨ感受性色指示薬
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US11734539B2 (en) 2021-04-05 2023-08-22 Temptime Corporation Dynamic optical property windows in indicia with sensors

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