EP2499062B1 - Containers for transport of food - Google Patents
Containers for transport of food Download PDFInfo
- Publication number
- EP2499062B1 EP2499062B1 EP10831846.0A EP10831846A EP2499062B1 EP 2499062 B1 EP2499062 B1 EP 2499062B1 EP 10831846 A EP10831846 A EP 10831846A EP 2499062 B1 EP2499062 B1 EP 2499062B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- container
- adhesive
- eps
- sidewalls
- plastic film
- Prior art date
- Legal status (The legal status 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 status listed.)
- Not-in-force
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Classifications
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- 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
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/22—Boxes or like containers with side walls of substantial depth for enclosing contents
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- 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
- B65D21/00—Nestable, stackable or joinable containers; Containers of variable capacity
- B65D21/02—Containers specially shaped, or provided with fittings or attachments, to facilitate nesting, stacking, or joining together
- B65D21/0209—Containers specially shaped, or provided with fittings or attachments, to facilitate nesting, stacking, or joining together stackable or joined together one-upon-the-other in the upright or upside-down position
- B65D21/0212—Containers presenting local stacking elements protruding from the upper or lower edge of a side wall, e.g. handles, lugs, ribs, grooves
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- 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
- B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
- B65D77/10—Container closures formed after filling
- B65D77/20—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
- B65D77/2024—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers the cover being welded or adhered to the container
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- 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
- B65D81/38—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 with thermal insulation
- B65D81/3813—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 with thermal insulation rigid container being in the form of a box, tray or like container
- B65D81/3816—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 with thermal insulation rigid container being in the form of a box, tray or like container formed of foam material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B25/00—Packaging other articles presenting special problems
- B65B25/001—Packaging other articles presenting special problems of foodstuffs, combined with their conservation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
- B65B51/10—Applying or generating heat or pressure or combinations thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B7/00—Closing containers or receptacles after filling
- B65B7/16—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons
- B65B7/162—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons by feeding web material to securing means
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- 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
- B65D81/18—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 providing specific environment for contents, e.g. temperature above or below ambient
- B65D81/20—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 providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas
- B65D81/2069—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 providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas in a special atmosphere
- B65D81/2076—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 providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas in a special atmosphere in an at least partially rigid container
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- 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
- B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
- B65D85/50—Containers, packaging elements or packages, specially adapted for particular articles or materials for living organisms, articles or materials sensitive to changes of environment or atmospheric conditions, e.g. land animals, birds, fish, water plants, non-aquatic plants, flower bulbs, cut flowers or foliage
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2303/00—Details of devices using other cold materials; Details of devices using cold-storage bodies
- F25D2303/08—Devices using cold storage material, i.e. ice or other freezable liquid
- F25D2303/081—Devices using cold storage material, i.e. ice or other freezable liquid using ice cubes or crushed ice
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2303/00—Details of devices using other cold materials; Details of devices using cold-storage bodies
- F25D2303/08—Devices using cold storage material, i.e. ice or other freezable liquid
- F25D2303/084—Position of the cold storage material in relationship to a product to be cooled
- F25D2303/0843—Position of the cold storage material in relationship to a product to be cooled on the side of the product
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2303/00—Details of devices using other cold materials; Details of devices using cold-storage bodies
- F25D2303/08—Devices using cold storage material, i.e. ice or other freezable liquid
- F25D2303/084—Position of the cold storage material in relationship to a product to be cooled
- F25D2303/0844—Position of the cold storage material in relationship to a product to be cooled above the product
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2303/00—Details of devices using other cold materials; Details of devices using cold-storage bodies
- F25D2303/08—Devices using cold storage material, i.e. ice or other freezable liquid
- F25D2303/084—Position of the cold storage material in relationship to a product to be cooled
- F25D2303/0845—Position of the cold storage material in relationship to a product to be cooled below the product
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D3/00—Devices using other cold materials; Devices using cold-storage bodies
- F25D3/02—Devices using other cold materials; Devices using cold-storage bodies using ice, e.g. ice-boxes
- F25D3/06—Movable containers
- F25D3/08—Movable containers portable, i.e. adapted to be carried personally
Definitions
- the present invention relates to a new type of EPS containers, according to the preamble of patent claim 1 and a method for production thereof in accordance with the preamble of claim 7.
- EPS containers Extra PolyStyrene
- Transport in EPS containers is the least expensive and efficient way to transport fish.
- EPS containers Light, functional, hygienic, robust and may be adjusted to a European pallet.
- the fish is placed into the container together with ice, possibly an absorbent, and finally a lid of EPS is laid onto the container, and fastened with straps.
- Such containers having a lid and straps are well known in prior art, for instance from Bewi AS.
- XPS XPS- extruded polystyrene
- JP 7060922 XPS are produced in flat plates, and an XPS-tray is produced by punching a tray from such an XPS plate. To perform the punching process, the plate must be relatively thin, and thus it is not possible to produce a container of XPS having sufficient strength. The thin walls are not providing sufficient insulation, and the XPS-trays must thus be cooled from the outside.
- US 6,248,380 describe a container for food, such as minced meat, with so-called modified atmospheric packaging (MAP).
- MAP modified atmospheric packaging
- FR 2 869 592 disclose a method for producing a container of EPS with a sealing film atop of the container.
- the main object of this method is to simplify production by performing sealing and cutting in a single operation. Sealing may be performed by heat welding. There is no mention of using glue being activated at a temperature lower than the temperature where EPS begins to decompose or a peripheral track for accommodation of the film.
- This document discloses a container and a method for making said container according to the preamble of claim 1 and 7.
- a main object is that the EPS containers according to the present patent application should be lighter and have smaller outer volume than known EPS containers having the same inner volume.
- a further object is that the containers should be air- and fluid tight, in order to render the atmosphere inside controllable.
- Yet another object is that the containers should provide better possibilities for branding.
- the invention is related to a container having sidewalls and floor of EPS, wherein the traditional EPS lid is replaced by a plastic film being fastened directly to the EPS container.
- a plastic film By using this film a substantial reduction of volume and weight is achieved, and a container is obtained being liquid and/or gas tight.
- Using a transparent plastic film further makes it easier for the end user to inspect the contents of the container, as it no longer needs to be opened to allow inspection of its contents.
- the film also offers a good possibility for branding, because it can be printed directly onto the plastic film. Directly printing onto EPS is possible, but the result is often poor, and it causes a lot of wreckage.
- the alternative is to use stickers, but that involves extra costs and work.
- An adhesive is used to fasten the plastic film to the EPS container. Even if this adhesive is not supposed to contact the contents of the container directly, it is still an advantage to use an adhesive being approved by FDA for indirect contact with food.
- the adhesive must fasten well to EPS, and preferably have a lower melting point than EPS, so that the EPS is not deformed or melted when the adhesive is supplied. When EPS melts, styrene gas is produced, and styrene gas is possibly cancerous for humans.
- glue it is in this application meant use of an adhesive/glue for fastening two parts to each other, releasably or durably.
- adhesive it is meant any kind of fastening means being suitable for fastening two parts to each other, releasably or durably.
- Different types of adhesives may be used, preferably adhesives applied in one step, and activated in another, for instance adhesives being activated by temperature, pressure, ultrasound or ultraviolet light. It may also be used adhesives applied in one step and cured in another.
- a kind of plastic firstly being applied to the EPS container is used, and when the plastic film is applied, the film is welded to the plastic already being applied to the EPS container.
- ethylene vinyl acetate (CAS# 24937-78-8, also known as EVA). It is a copolymer of ethylene and vinyl acetate. The weight ratio of vinyl acetate is normally varying between 10 and 40%.
- the adhesive is applied immediately after production of the container, in such a way that the adhesive is applied in a dry, controllable environment.
- the adhesive may also be applied after the contents of the container is put in place, but then water, ice or other elements might prevent optimal adhesion between adhesive and EPS. After the contents are placed in the container, the adhesive must be activated and the plastic film applied. If the characteristics of the adhesive so allows, it may also be moulded into the EPS container during production.
- the upper edge of the sidewalls of the EPS container is provided with a horizontal, peripheral track where the adhesive is placed, in such a way that the contact surface between EPS and adhesive is as large as possible without changing the thickness of the wall.
- the plastic film being placed as lid on an EPS container must also be approved for food, corresponding to the adhesive.
- the plastic film is preferably gas tight, and should have high tensile strength, for instance about 13 MPa. Furthermore it is a premise that the film fastens well to the adhesive, and that its properties does not change during the activation or curing of the adhesive; for instance it must have a melting temperature higher than the activation temperature of the adhesive, in cases where the glue should be activated by heat.
- the invention also comprises a method for producing a container as described above, comprising the steps of
- the container is filled with desired contents after moulding or preferably after the adhesive is applied.
- the method also comprises a further step for activating the glue after it is applied onto the container, and most preferably it is activated after the plastic film is put onto the box, in such a way that the adhesive will be activated through the plastic film. Finally it is an advantage that the plastic film is guided down until contact with the adhesive, and further until contact with the upper edge of the container is achieved.
- EPS containers By using EPS containers according to the present invention, one achieves reduced weight and reduced volume. Compared to use of traditional containers this offers large economic cuts upon transportation. When one also may achieve a completely gastight container, the fish may be packed in a controlled atmosphere, and this offers new methods for packaging and transporting fresh fish. For instance a reduction of the amount of ice will contribute substantially to further lower the costs for transportation.
- the underside of the floor and the upper part of the sidewalls and/or upper edge may be performed with reciprocal designs, in such a way that the floor of an adjacent container being stacked on top, will function as an insulating lid. This gives a further reduction of the outer volume of the container, and allows more containers to be stacked in the height, without increasing the outer measures of the pallet. This reduces the transportation costs further.
- Figure 1 shows a fish container 1 having sidewalls and floor of EPS (in this case an EPS having a melting temperature of 103°C is used) designed to achieve a plastic film as lid instead of a traditional EPS lid.
- the container is designed with a horizontal track on the upper edge of the sides of the container, wherein the track is designed to provide a carrier surface for the adhesive.
- the adhesive 2 is applied to the track.
- the upper edges of the container is further provided with a discontinuous, elevated outer edge 3, which is opposite to recesses/grooves 4 in the underside of the container, in such a way that containers can be steadily stacked high.
- a EVA adhesive for example Krystal Lim FDA 105
- Krystal Lim FDA 105 is applied to the track 2, at a temperature where the adhesive is liquid or semi-solid, but under the melting temperature for EPS.
- the container 1 is cooled and transported to the site of use, where fish and ice are placed into the container.
- a plastic film 5 for instance a 40 ⁇ m thick two-layer plastic film of PE and EVA, wherein the EVA layer turns towards the adhesive, is placed over the container, and guided down towards the upper side of the container, until the plastic touches the adhesive.
- the adhesive is activated, preferably by heat, at a temperature higher than the melting temperature for the adhesive, but lower than the melting temperature for EPS.
- the activation of the adhesive may for instance be performed by using a frame being lowered onto the plastic film and heating the adhesive through it.
- the frame may have a temperature of 80°C.
- the frame must have the same shape as the adhesive 2, but may advantageously be narrower in order to avoid direct contact between the hot frame and the EPS container.
- the film 5 While the adhesive is being activated, the film 5 is lowered further, and preferably until the film is in contact with the upper edges of the container, in such a way that it is glued to the EPS container.
- a container provided with such a plastic film is shown in Figure 2 .
- a traditional lid weighs 200 gram, and a plastic film with adhesive, according to the example above, weighs about 15 g.
- the weight reduction per container will thus be about 185 g, and per pallet (24 containers) 24*185 g, i.e. 4,440 g.
- a lid adds about 2 cm to the height of a container, and the volume reduction per pallet (8 containers on top of each other) will thus be 7 * 2 cm; 14 cm.
- the containers can be stacked more closely than before, and the total volume reduction, having containers according to the present invention, is as shown in Figure 3 , 23.9 cm, or about 230 litres.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ceramic Engineering (AREA)
- Packages (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
- Making Paper Articles (AREA)
- Rigid Containers With Two Or More Constituent Elements (AREA)
- Pallets (AREA)
- Closures For Containers (AREA)
- Supplying Of Containers To The Packaging Station (AREA)
Description
- The present invention relates to a new type of EPS containers, according to the preamble of
patent claim 1 and a method for production thereof in accordance with the preamble of claim 7. - Food, especially fresh fish, is often transported in EPS containers (Expanded PolyStyrene). Transport in EPS containers is the least expensive and efficient way to transport fish. Such a container is light, functional, hygienic, robust and may be adjusted to a European pallet. The fish is placed into the container together with ice, possibly an absorbent, and finally a lid of EPS is laid onto the container, and fastened with straps. Such containers having a lid and straps are well known in prior art, for instance from Bewi AS.
- During transportation, most of the ice will melt, and in order to prevent the food from lying in water, which would reduce the quality, most EPS containers are performed with holes for drainage, whereby superfluous water may drain out. During long transport(ation)s, water will thus flow out of the containers, and from the vehicle, such as a trailer. This water is mixed with fluids from the fish, and is thus unfavourable discharge. The alternative is to use sufficient amounts of absorbents, which i.a. is done for transportation by plane.
- To fill the containers with ice instead of food is very unfavourable, and renders the transportation expensive. One may also use dry ice instead of wet ice, but dry ice is more expensive, and should not directly touch the food. The alternative for using EPS containers with ice, is to use other containers and perform other ways of cooling during the entire transport. The containers must also be strong enough to be stackable and to allow being moved and handled without danger for falling apart.
- Many different types of trays or small containers of XPS - extruded polystyrene are known, for instance from
JP 7060922 -
US 6,248,380 describe a container for food, such as minced meat, with so-called modified atmospheric packaging (MAP). However, this type container is not applicable to long distance transportation of fresh fish since the fish cannot preserve its quality and the container is not applicable to stacking. -
FR 2 869 592 - This document discloses a container and a method for making said container according to the preamble of
claim 1 and 7. - A main object is that the EPS containers according to the present patent application should be lighter and have smaller outer volume than known EPS containers having the same inner volume. A further object is that the containers should be air- and fluid tight, in order to render the atmosphere inside controllable. Yet another object is that the containers should provide better possibilities for branding.
- The objects are achieved with an EPS container according to the characterizing parts of
patent claim 1 and a method for production thereof in accordance with the characterizing part of patent claim 7. Further advantageous features are stated in the accompanied dependent claims. - The invention is related to a container having sidewalls and floor of EPS, wherein the traditional EPS lid is replaced by a plastic film being fastened directly to the EPS container. By using this film a substantial reduction of volume and weight is achieved, and a container is obtained being liquid and/or gas tight. Using a transparent plastic film further makes it easier for the end user to inspect the contents of the container, as it no longer needs to be opened to allow inspection of its contents. The film also offers a good possibility for branding, because it can be printed directly onto the plastic film. Directly printing onto EPS is possible, but the result is often poor, and it causes a lot of wreckage. The alternative is to use stickers, but that involves extra costs and work.
- An adhesive is used to fasten the plastic film to the EPS container. Even if this adhesive is not supposed to contact the contents of the container directly, it is still an advantage to use an adhesive being approved by FDA for indirect contact with food. The adhesive must fasten well to EPS, and preferably have a lower melting point than EPS, so that the EPS is not deformed or melted when the adhesive is supplied. When EPS melts, styrene gas is produced, and styrene gas is possibly cancerous for humans.
- By "gluing" it is in this application meant use of an adhesive/glue for fastening two parts to each other, releasably or durably. By "adhesive" it is meant any kind of fastening means being suitable for fastening two parts to each other, releasably or durably. Different types of adhesives may be used, preferably adhesives applied in one step, and activated in another, for instance adhesives being activated by temperature, pressure, ultrasound or ultraviolet light. It may also be used adhesives applied in one step and cured in another. In an alternative embodiment, a kind of plastic firstly being applied to the EPS container is used, and when the plastic film is applied, the film is welded to the plastic already being applied to the EPS container. It is, of course, a premise that the plastic being applied to the EPS container adheres to EPS, and does not loosen during the welding. A preferred example of an adhesive being activated with heat, is ethylene vinyl acetate (CAS# 24937-78-8, also known as EVA). It is a copolymer of ethylene and vinyl acetate. The weight ratio of vinyl acetate is normally varying between 10 and 40%.
- In an especially preferred embodiment, the adhesive is applied immediately after production of the container, in such a way that the adhesive is applied in a dry, controllable environment. The adhesive may also be applied after the contents of the container is put in place, but then water, ice or other elements might prevent optimal adhesion between adhesive and EPS. After the contents are placed in the container, the adhesive must be activated and the plastic film applied. If the characteristics of the adhesive so allows, it may also be moulded into the EPS container during production.
- In an alternative embodiment, the upper edge of the sidewalls of the EPS container, is provided with a horizontal, peripheral track where the adhesive is placed, in such a way that the contact surface between EPS and adhesive is as large as possible without changing the thickness of the wall.
- The plastic film being placed as lid on an EPS container, must also be approved for food, corresponding to the adhesive. The plastic film is preferably gas tight, and should have high tensile strength, for instance about 13 MPa. Furthermore it is a premise that the film fastens well to the adhesive, and that its properties does not change during the activation or curing of the adhesive; for instance it must have a melting temperature higher than the activation temperature of the adhesive, in cases where the glue should be activated by heat. In order to achieve a film having satisfying characteristics it may be an advantage to use a plastic film comprising several layers, a laminate. Besides, it is preferred to allow printing directly onto the plastic film, possibly on one of the layers if a laminate is being used, and that it is produced in a non-dewing quality.
- The invention also comprises a method for producing a container as described above, comprising the steps of
- moulding a container (1) having sidewalls and floor of EPS in a regular way,
- applying an adhesive on an upper edge of the sidewalls,
- laying a plastic film (5) over the container, and guiding it down at the least until contact with the adhesive is achieved.
- The container is filled with desired contents after moulding or preferably after the adhesive is applied.
- The method also comprises a further step for activating the glue after it is applied onto the container, and most preferably it is activated after the plastic film is put onto the box, in such a way that the adhesive will be activated through the plastic film. Finally it is an advantage that the plastic film is guided down until contact with the adhesive, and further until contact with the upper edge of the container is achieved.
- By using EPS containers according to the present invention, one achieves reduced weight and reduced volume. Compared to use of traditional containers this offers large economic cuts upon transportation. When one also may achieve a completely gastight container, the fish may be packed in a controlled atmosphere, and this offers new methods for packaging and transporting fresh fish. For instance a reduction of the amount of ice will contribute substantially to further lower the costs for transportation.
- By replacing the lids with a plastic film, the underside of the floor and the upper part of the sidewalls and/or upper edge may be performed with reciprocal designs, in such a way that the floor of an adjacent container being stacked on top, will function as an insulating lid. This gives a further reduction of the outer volume of the container, and allows more containers to be stacked in the height, without increasing the outer measures of the pallet. This reduces the transportation costs further.
- The invention will in the following be described in the form of an example, wherein a container having sidewalls and floor of EPS is provided with a plastic film lid, and wherein a number of containers are placed on a pallet. The example is shown in the enclosed drawings, where
-
Figure 1 shows a container having sidewalls and floor of EPS, while adhesive is applied at the upper edge of the sidewalls, -
Figure 1a shows an enlarged section ofFigure 1 , where the track having applied adhesive is shown in detail, -
Figure 2 shows the container ofFigure 1 , having a plastic film glued in place, and -
Figure 3 shows a pallet of containers according to present invention, compared to a pallet of traditional containers. -
Figure 1 shows afish container 1 having sidewalls and floor of EPS (in this case an EPS having a melting temperature of 103°C is used) designed to achieve a plastic film as lid instead of a traditional EPS lid. The container is designed with a horizontal track on the upper edge of the sides of the container, wherein the track is designed to provide a carrier surface for the adhesive. In the shown embodiment inFigure 1 , and as shown in detail inFigure 1a , the adhesive 2 is applied to the track. The upper edges of the container is further provided with a discontinuous, elevatedouter edge 3, which is opposite to recesses/grooves 4 in the underside of the container, in such a way that containers can be steadily stacked high. - In a specific preferred embodiment of the invention, a EVA adhesive, for example Krystal Lim FDA 105, is applied to the
track 2, at a temperature where the adhesive is liquid or semi-solid, but under the melting temperature for EPS. Upon use of Krystal Lim FDA 105 this will be a temperature of about 70°C. Once the adhesive is applied, thecontainer 1 is cooled and transported to the site of use, where fish and ice are placed into the container. When the desired contents are placed in the container, aplastic film 5, for instance a 40 µm thick two-layer plastic film of PE and EVA, wherein the EVA layer turns towards the adhesive, is placed over the container, and guided down towards the upper side of the container, until the plastic touches the adhesive. Then the adhesive is activated, preferably by heat, at a temperature higher than the melting temperature for the adhesive, but lower than the melting temperature for EPS. The activation of the adhesive may for instance be performed by using a frame being lowered onto the plastic film and heating the adhesive through it. In cases where the adhesive is Krystal adhesive FDA 105, the frame may have a temperature of 80°C. The frame must have the same shape as the adhesive 2, but may advantageously be narrower in order to avoid direct contact between the hot frame and the EPS container. - While the adhesive is being activated, the
film 5 is lowered further, and preferably until the film is in contact with the upper edges of the container, in such a way that it is glued to the EPS container. A container provided with such a plastic film is shown inFigure 2 . - There are several machines in prior art, for fastening plastic films as lids to trays of other materials, for instance plastic trays, preferably by lamination of plastic layers. With small adjustments these machines may also be used for fastening a plastic film to a container according to the present invention, which will be obvious to a person skilled in the art.
- The savings by using
plastic films 5 instead oftraditional EPS lids 6, are large. A traditional lid weighs 200 gram, and a plastic film with adhesive, according to the example above, weighs about 15 g. The weight reduction per container will thus be about 185 g, and per pallet (24 containers) 24*185 g, i.e. 4,440 g. However, to ensure that a hole is not made in the lid of the uppermost containers, and to avoid loss of cold, it is preferred that the uppermost layer has traditional layers in addition, and the reduction per pallet will thus be (24-3) * 185 g = 3,840 g. The weight reduction of the containers themselves, due to new design having elevations and recesses comes in addition. - A lid adds about 2 cm to the height of a container, and the volume reduction per pallet (8 containers on top of each other) will thus be 7 * 2 cm; 14 cm. However, when the containers further are designed with elevations on the upper edge and opposite recesses on the underside of the floor, the containers can be stacked more closely than before, and the total volume reduction, having containers according to the present invention, is as shown in
Figure 3 , 23.9 cm, or about 230 litres. - Above is shown and described a preferred embodiment of the present invention. The Figures and example are only given to illustrate an embodiment and should not under any circumstances be interpreted as limiting to the invention which is defined by the enclosed claims.
Claims (7)
- Container (1) for liquid and/or gas tight transportation and/or storage of food, wherein the container comprises a lid (5) and has sidewalls and floor of expanded polystyrene (EPS), characterized in that the upper edges of the sidewalls of the container are designed with a horizontal track (2), and that said lid (5) comprises a plastic film attached to the container by gluing in the horizontal track (2) with an adhesive of a type being able to being heat activated at a temperature lower than the deformation temperature and/or melting temperature of EPS.
- Container (1) according to claim 1, characterized in that the horizontal track (2) is designed to create a carrier surface for an adhesive.
- Container (1) according to any one of claims 1 or 2, characterized in that the adhesive is applied onto the track (2) after the production of the container (1).
- Container (1) according to any one of the proceeding claims, characterized in that the container having the plastic film (5) is gas tight.
- Container (1) according to any one of the proceeding claims, characterized in that the underside of the floor and the upper part and/or edges of the sidewalls are provided with opposite designs (3, 4), in such a way that the upper part of the sidewall can be directed into the floor of a container being placed on top.
- Container (1) according to claim 5, characterized in that the sidewalls have an outer, peripheral, elevated part (3) on the upper edge, and that the underside of the floor has opposite recesses (4).
- Method for producing an EPS container (1) according to claim 1, bya) moulding a container (1) having sidewalls and floor of EPS in traditional way, characterized in:b) applying an adhesive (2) to the upper edges of the sidewalls,c) applying a plastic film (5) over the container, and guiding it downwards until it comes in contact with the adhesive (2),d) activating the adhesive,e) guiding the plastic film further down until contact with the upper edge of the container.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO20093338A NO331361B2 (en) | 2009-11-13 | 2009-11-13 | Box for transport and / or storage of foodstuffs, as well as process for making them |
PCT/NO2010/000413 WO2011062502A1 (en) | 2009-11-13 | 2010-11-12 | Containers for transport of food |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2499062A1 EP2499062A1 (en) | 2012-09-19 |
EP2499062A4 EP2499062A4 (en) | 2013-06-05 |
EP2499062B1 true EP2499062B1 (en) | 2016-12-28 |
Family
ID=44059809
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10831846.0A Not-in-force EP2499062B1 (en) | 2009-11-13 | 2010-11-12 | Containers for transport of food |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP2499062B1 (en) |
CA (1) | CA2780471C (en) |
CL (1) | CL2012001237A1 (en) |
NO (1) | NO331361B2 (en) |
RU (1) | RU2552910C2 (en) |
WO (1) | WO2011062502A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105883140B (en) * | 2016-06-02 | 2017-10-13 | 深圳市华星光电技术有限公司 | Stackable packing case |
ES2930758T3 (en) * | 2018-04-27 | 2022-12-21 | Storopack Hans Reichenecker Gmbh | Container to receive products to be cooled and related procedure |
CN112424087B (en) * | 2020-09-28 | 2022-07-29 | 东莞旺诠纸品有限公司 | Packaging buffer material |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1798168U (en) * | 1958-05-16 | 1959-10-15 | Aluminium Walzwerke Singen | PACKAGING CONTAINER. |
DE1893058U (en) * | 1963-03-21 | 1964-05-14 | Italo Cargnelutti Gemona Del G | STACKABLE CONTAINER FOR LOADING AND TRANSPORTING FISH OR. DGL. |
DE1486371A1 (en) * | 1965-07-28 | 1970-01-22 | Gruenzweig & Hartmann | Stackable transport container for smoked fish products |
GB2143213B (en) * | 1983-07-14 | 1986-11-26 | Otford E P S Limited | Reinforcing insulated boxes |
JPH0760922B2 (en) | 1988-07-15 | 1995-06-28 | 横浜ゴム株式会社 | Multi-layer film for additive method wiring board |
US5176314A (en) * | 1989-12-25 | 1993-01-05 | Sumitomo Bakelite Company Limited | Easily openable sealed container |
US5163269A (en) * | 1990-09-10 | 1992-11-17 | Bryan Foods, Inc. | Method for making reclosable package |
JP3254539B2 (en) * | 1993-08-26 | 2002-02-12 | 三菱樹脂株式会社 | Transparent anti-fog lid material |
US6248380B1 (en) * | 1995-06-06 | 2001-06-19 | Cryovac, Inc. | Package having a dual-film lid comprising a gas-impermeable film and a delaminatable, gas-permeable film |
US5916615A (en) * | 1997-06-18 | 1999-06-29 | W. R. Grace & Co.-Conn. | Case-ready packages having smooth, gas-permeable substrates on the bottoms thereof to reduce or prevent discoloration when placed in a stack |
US6413599B1 (en) * | 1999-07-29 | 2002-07-02 | The Gillette Company | Sealed container for an article of personal use such as a razor cartridge |
WO2003031282A1 (en) * | 2001-10-10 | 2003-04-17 | Linpac Plastics Gmbh | Packaging container for receiving foodstuffs and method for producing same |
US6769227B2 (en) * | 2002-07-23 | 2004-08-03 | Cryovac, Inc. | Package including a lidstock laminate |
FR2869592B1 (en) * | 2004-04-30 | 2006-08-04 | Miguel Bernard Moreira | OPERCULABLE PACKAGING |
DE102008007340B4 (en) * | 2008-02-04 | 2011-03-24 | Ifco Systems Gmbh | Folding container fish box for transporting fresh fish |
-
2009
- 2009-11-13 NO NO20093338A patent/NO331361B2/en active IP Right Review Request
-
2010
- 2010-11-12 CA CA2780471A patent/CA2780471C/en not_active Expired - Fee Related
- 2010-11-12 EP EP10831846.0A patent/EP2499062B1/en not_active Not-in-force
- 2010-11-12 WO PCT/NO2010/000413 patent/WO2011062502A1/en active Application Filing
- 2010-11-12 RU RU2012123743/12A patent/RU2552910C2/en active IP Right Revival
-
2012
- 2012-05-11 CL CL2012001237A patent/CL2012001237A1/en unknown
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
---|---|
WO2011062502A1 (en) | 2011-05-26 |
NO331361B1 (en) | 2011-12-12 |
NO331361B2 (en) | 2015-05-04 |
CA2780471C (en) | 2017-10-24 |
RU2552910C2 (en) | 2015-06-10 |
CL2012001237A1 (en) | 2012-10-12 |
NO20093338A1 (en) | 2011-05-16 |
EP2499062A1 (en) | 2012-09-19 |
EP2499062A4 (en) | 2013-06-05 |
CA2780471A1 (en) | 2011-05-26 |
RU2012123743A (en) | 2013-12-20 |
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