EP4116220A1 - Procédé de fermeture d'un récipient destiné à la réception des aliments ou des boissons au moyen d'un feuille de recouvrement thermoscellable - Google Patents

Procédé de fermeture d'un récipient destiné à la réception des aliments ou des boissons au moyen d'un feuille de recouvrement thermoscellable Download PDF

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Publication number
EP4116220A1
EP4116220A1 EP21184546.6A EP21184546A EP4116220A1 EP 4116220 A1 EP4116220 A1 EP 4116220A1 EP 21184546 A EP21184546 A EP 21184546A EP 4116220 A1 EP4116220 A1 EP 4116220A1
Authority
EP
European Patent Office
Prior art keywords
container
sealing
base body
covering film
edge
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.)
Pending
Application number
EP21184546.6A
Other languages
German (de)
English (en)
Inventor
Armin-Carsten Josek
Bernhard Schmelz LAUTERWEG
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ALX Metall Verpackungstechnik Dipl Ing Alexander Josek GmbH
Original Assignee
ALX Metall Verpackungstechnik Dipl Ing Alexander Josek GmbH
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 ALX Metall Verpackungstechnik Dipl Ing Alexander Josek GmbH filed Critical ALX Metall Verpackungstechnik Dipl Ing Alexander Josek GmbH
Priority to EP21184546.6A priority Critical patent/EP4116220A1/fr
Publication of EP4116220A1 publication Critical patent/EP4116220A1/fr
Pending 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
    • 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
    • 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
    • B65B7/164—Securing by heat-sealing

Definitions

  • the invention relates to a method for closing a container for accommodating food or drinks by means of a heat-sealable covering film. Furthermore, the invention relates to the use of a container as a container for holding food or drinks and closing it by means of a heat-sealable covering film. Furthermore, the invention relates to a container for use in the method according to the invention and/or the use according to the invention.
  • the present invention relates in particular to containers used for taking ready-prepared food or beverages on-the-go.
  • containers are typically used only once and disposed of after use.
  • it is disposable packaging that is kept by the relevant provider of the ready-made food and/or beverages and, if necessary, is used to fill the food or beverages into these containers and to seal them with a heat-sealable covering film, on the one hand to protect the food or beverages warm and/or to prevent the food or beverages from becoming contaminated or leaking out run out of the container, for example during transport.
  • Such containers are used, for example, to take home meals that have not been eaten on site or to deliver ready-to-eat meals or drinks to the customer or to hand them over to the customer for later consumption.
  • the containers are held in stock and then, if necessary, sealed with a heat-sealable covering film, this typically being done with a heat-sealing device.
  • a heat-sealable covering film typically being done with a heat-sealing device.
  • Such containers are used, for example, in restaurants and snack bars, but also in canteens.
  • the method according to the invention for closing a container for accommodating food or beverages by means of a heat-sealable covering film has at least the following method steps: Providing the container, the container having a base body for holding food or drinks, the container having a front side that can be closed or covered with the heat-sealable covering film, the container having a sealing body with a sealing edge for sealing on the covering film, the sealing edge on the front side of the container in relation to the base body protrudes, wherein the base body consists of a first material and the sealing edge consists of a second material, the first and the second material being different. Furthermore, as a method step, the method provides for the covering film to be arranged on the front side of the container and for the covering film to be sealed onto the sealing edge using heat.
  • Arranging the covering film on the front side and sealing the covering film onto the sealing edge can certainly be done at least partially take place at the same time.
  • the particular advantage of using a base body and a sealing edge is that the base body and the sealing edge can be adapted to the respective requirements independently of one another.
  • the sealing edge can be matched to the special requirements when sealing on the covering film, in particular if the base body has particular disadvantages with regard to sealing on the covering film.
  • the sealing edge can consist of a material that is particularly well suited for the heat-sealable covering film to adhere to this sealing edge.
  • the material of the sealing edge can be selected in such a way that residues of the heat-sealable covering film and/or components of the heat-sealable covering film can be removed particularly easily.
  • the base body can be made from a material that is particularly durable and resistant to mechanical stresses, thereby enabling the container or at least the base body to be reused. Since the base body accommodates the food or drink, the base body is mechanically stressed in particular or essentially when the food or drink is consumed, for example when the container is cut with a knife or pierced with a fork. In addition, the stability, shape and rigidity of the container are essentially determined by the base body. By using a correspondingly hard and resistant material and/or a correspondingly large material thickness, the base body can be used several times, with the base body being particularly easy to clean after each use, for example it can be cleaned in a dishwasher.
  • a hard or stiff body has disadvantages for sealing the film on, since irregularities in the shape can result in the film not completely sealing the container, since a sealing edge should be as flat as possible. If the body directly form the sealing edge would, would be deformations of the body, for example as a result of cleaning in a dishwasher, disadvantageous for the sealing of the film and would mean that the container could not be reused.
  • a sealing edge made of a second material typically a softer material than the material of the base body, the container can be reliably sealed with a covering film.
  • the protruding sealing edge Due to the protruding sealing edge, deformations or bumps in the base body are less relevant or do not impair the reliable sealing of the container with the heat-sealable covering film, since the protruding sealing edge can be designed in such a way that the sealing edge has bumps or deformations in the base body due to its elasticity and/or deformability can compensate.
  • the use of a sealing rim and a base body is therefore particularly advantageous against the background that the base body provides the essential structure of the container, but deformations can occur when using the container, especially when rinsing the container, so that a container without a sealing rim could no longer be reliably sealed from another material. It would then not be possible to reuse the container and the container would have to be disposed of.
  • the advantage of the protruding sealing edge is also that the warm sealing device, which is typically a sealing plate that presses from the front onto the covering film arranged between the sealing device and the container, heats up the base body less, but essentially the sealing edge warms up, so that the base body does not have to have any special requirements in terms of thermal stability.
  • the base body typically does not heat up above a temperature of 100.degree. C., with the sealing temperature typically being in the range from 100.degree. C. to 180.degree.
  • the end customer can purchase such a container from a supplier of food and/or drinks to take away can and return this container when visiting this provider again or a provider who also offers such containers when buying takeaway food or drinks to take away and receives a new container or one that has been washed by the retailer from the provider and puts the food or drinks in it are filled in and then the container is sealed with the cover film.
  • the retailer or provider of the food or drink can in turn wash the old container and then give this container to the next end customer.
  • the base body has a coating.
  • the surface of the base body can be coated, laminated, polished or made food-safe in some other way.
  • the first material and/or the second material can certainly be a composite material, for example a fiber composite material, layered composite material (laminate), particle composite material or structural composite material.
  • the base body has an edge, with the sealing edge being formed exclusively in the area of the edge of the base body.
  • the filling of the food or drink is preferably carried out in a state in which the sealing body and the base body are connected to one another.
  • the covering film is then sealed on.
  • the filling of the food or drink may be performed in a state where the seal body and the base body are not connected to each other.
  • the sealing body is then connected to the base body and then the covering film is sealed on.
  • sealing edge is in the form of a bead.
  • the sealing body is preferably free of undercuts. As a result, the container is particularly easy and reliable to clean.
  • the sealing edge forms a sealing plane for sealing the covering film on.
  • the sealing edge is preferably in the form of a strip.
  • the sealing edge protrudes on the front side in relation to the base body in the direction of the covering film to be applied, hereinafter referred to as the axial direction.
  • the base body projects perpendicular to the axial direction outwards relative to the sealing edge.
  • the base body has a peripheral edge, with the sealing edge being formed in the region of the peripheral edge.
  • the method is preferably carried out using a sealing device, the sealing device having a lower part for receiving the container and an upper part with a heatable sealing device mounted in the upper part, the upper part and the lower part being transferrable from an open position into a closed position, for sealing the covering film arranged between the sealing device and the container onto the sealing edge.
  • the sealing device is preferably a hand-operated sealing device.
  • the sealing device is in particular a sealing device for one-way containers.
  • a possibly already existing sealing device for one-way containers can also be used for the solution according to the invention, to the extent that it can be used for a reusable container.
  • the sealing edge preferably consists of a softer material than the base body.
  • the first material has a higher hardness than the second material.
  • the first material has a higher Shore hardness than the second material.
  • the first material preferably has a Shore D hardness of 50 to 90, in particular 65 to 75.
  • the second material preferably has a Shore A hardness of 20 to 100, in particular 20 to 95
  • the second material preferably has a Shore D hardness of 1 to 60, in particular 5 to 45.
  • the first and/or the second material is preferably a plastic.
  • the first material is porcelain and/or a ceramic and/or a metal or a metal alloy and/or glass.
  • the second material is preferably an elastically deformable material, preferably an elastomer.
  • silicone as the second material has proven to be particularly advantageous for sealing on the covering film and, in particular, also for cleaning the sealing edge.
  • the base body and/or the sealing body are preferably designed in one piece.
  • the entire sealing body preferably consists of the second material.
  • the container preferably consists exclusively of the base body and the sealing body.
  • the first material is in particular a duroplastic or a thermoplastic.
  • the first material is polypropylene.
  • the base body is coated or foiled with other materials.
  • the sealing body is connected to the base body in a form-fitting and/or material-fitting manner. So it is quite conceivable that the sealing body is glued or fused to the base body or is used, for example, in a groove of the base body.
  • the base body and the sealing body can be detachably connected to one another, as a result of which the base body and the sealing body can be cleaned separately from one another and, for example in the event of damage to the sealing edge, the sealing edge can be easily replaced while continuing to use the body.
  • the container is an injection-molded body, preferably a two-component injection-molded body. It is also quite conceivable that only the base body is an injection molded body.
  • the container preferably has one or more compartments for accommodating food, with the sealing edge enclosing the respective compartment all the way around and correspondingly having a filling opening for the respective compartment.
  • the base body and/or the sealing edge and/or the sealing body have a material thickness of 3 mm to 6 mm. These material thicknesses have proven to be particularly advantageous with regard to frequent reuse.
  • the sealing edge on the front side of the container protrudes by 1 mm to 5 mm, preferably 1 mm to 3 mm, relative to the base body.
  • the sealing edge projects sufficiently to compensate for unevenness and/or deformations of the base body and to ensure that the container is reliably closed by means of the heat-sealable covering film.
  • a material thickness of the covering film is preferably 10 ⁇ m to 75 ⁇ m.
  • the covering film is sealed on at a sealing temperature of 100.degree. C. to 180.degree. C., preferably at a sealing temperature of 135.degree. C. to 140.degree.
  • the sealing body and the base body form separate parts, with the sealing body and the base body being detachably connected to one another. It is conceivable, for example, that the sealing body is inserted into a receiving structure formed in the area of the front side of the base body and/or the sealing body has a holding section, the holding section affecting the base body, in particular a circumferential edge of the base body, engages behind on a side facing away from the front.
  • the two aforementioned arrangements are especially easy to produce when the sealing edge is made of an elastic material, so that the sealing body can be inserted and clamped in the base body in a particularly simple manner.
  • the covering film is attached in such a way that only the sealing edge is connected to the covering film. It has been shown that when the covering film is sealed onto a base body made of a duroplast or thermoplastic and after the covering film has been removed from the base body, residues remain on the base body, which make it unsightly and difficult to remove.
  • the invention also provides for the use of a container as a container for accommodating food or beverages and for closing it by means of a heat-sealable covering film, the container having a base body for accommodating food or beverages, the container having a front side which can be closed with the heat-sealable covering film, wherein the container has a sealing body with a sealing edge for sealing on the covering film, the sealing edge protruding on the front side of the container in relation to the base body.
  • the main body consists of a first material and the sealing edge consists of a second material, the first material and the second material being different.
  • the container according to the invention is used in particular in the method according to the invention or the use according to the invention, the container being used to hold food or drinks, the container being closable by means of a heat-sealable covering film, wherein the container has a base body for holding food or drinks, the container having a front side that can be closed with the heat-sealable covering film, the container having a sealing body with a sealing edge for sealing on the covering film, the sealing edge on the front side of the container protruding in relation to the base body , wherein the body consists of a first material and the sealing edge consists of a second material, wherein the first and the second material are different.
  • Figures 1 to 7 show a first embodiment of the container 1 according to the invention, this container 1 being a meal tray with three compartments 11 in the present case.
  • the respective compartment 11 is used to hold a component of the meal, for example the side dish, the vegetable and/or the dessert.
  • the container 1 can be closed with a heat-sealable covering film 2 , the covering film 2 being sealed onto the container 1 on a front side 3 of the container 1 .
  • the covering film 2 is deducted for the purpose of consumption of the food contained in the container 1.
  • the container 1 with a sealed, partially peeled off, transparent cover film 2 is in the 6 and 7 shown.
  • the container 1 has a base body 5 which is used to actually hold the food and accordingly has the compartments 11 .
  • the container 1 has a sealing edge protruding on the front side 3 of the container 1 opposite the base body 5 in the direction of the front side 3 facing the covering film 2, in this respect in the direction of the covering film 2, the sealing edge being sealed with the covering film 2 with the covering film 2 is connected.
  • the sealing edge is part of a sealing body 6.
  • the base body 5 and the sealing body 6 form two separate parts, with the base body 5 and the sealing body 6 being detachably connectable to one another.
  • the base body 5 has a receiving structure 14 in the form of recesses or grooves, wherein the sealing body 6, which is designed as a closed body in the present case, can be inserted into this receiving structure 14 and is clamped in it when inserted.
  • the shape of the receiving structure 14 essentially corresponds to the negative of the shape of the sealing body 6 , the depth of the grooves corresponding to approximately two-thirds of the thickness of the sealing body 6 .
  • the sealing body 6 is designed in such a way that it has an outer peripheral edge 17 and several inner intermediate webs 18 , with the respective compartment 11 being circumferentially enclosed by a partial area of the edge 17 together with one of the intermediate webs 18 . This ensures that when the container 1 is closed with the covering film 2, the respective compartment 11 is sealed by the covering film 2, so that components of the menu that have been placed in the respective compartment 11 do not come into contact during transport with components of the menu that are placed in one of the other compartments 11 mixed.
  • the method using a sealing device 7, as in the 8 shown, carried out, wherein the sealing device 7 has a lower part 8 for receiving the container 1 and an upper part 9 with a heatable sealing device 10 mounted in the upper part 9, wherein the upper part 9 and the lower part 8 can be transferred from an open position into a closed position are, for sealing the arranged between the sealing device 10 and the container 1 covering film 2 on the sealing edge.
  • the base body 5 has a peripheral edge 13 , this peripheral edge 13 protruding radially outwards and receiving the outer peripheral edge 17 of the sealing body 6 .
  • This outwardly protruding peripheral edge 13 serves to store the container 1 in a sealing frame 19 of the sealing device 7 for sealing on the covering film 2, with this peripheral edge 13 resting on an outer edge of the sealing frame 19 so that the sealing frame 19 protects the container 1, specifically the base body 5, from a rear side 4 of the peripheral edge 13 facing away from the front side 3, in order to avoid a deformation of the menu tray when the sealing device 10 is pressed on.
  • the seal frame 19 is in the 8 shown cut.
  • the container 1 is designed in such a way that the base body 5 can also be supported by a correspondingly designed sealing frame 19 on the side facing away from the intermediate bars 18 in those areas in which the intermediate bars 18 are arranged. This ensures that the covering film 2 is applied or sealed onto the intermediate webs 18 since deformations in the area of the intermediate webs 18 are avoided.
  • the sealing body 6 is designed in one piece and consists of an elastically deformable material, the sealing body 6 in the present case being made of silicone.
  • silicone and the possibility of separating the base body 5 and the sealing body 6 make it particularly easy to clean the respective component 5, 6 of the container 1, in particular the Sealing body 6.
  • impurities in particular residues of the covering film 2 and/or components of the covering film 2 can be removed from the sealing body 6 particularly easily, for example by the sealing body 6 being severely deformed, for example kinked, stretched or compressed, with the change in shape of the sealing body 6 means that many of the possible impurities can be detached from the sealing body 6 and the sealing body 6 then only has to be cleaned and/or disinfected with little effort.
  • the Figures 9 to 14 shows a second embodiment of the container 1, which differs from the first embodiment essentially in that the sealing body 6 is designed as a flat structure and can be clipped onto the base body 5.
  • the sealing body 6 has tabs 15 , the tabs 15 being formed in the respective outer corner of the essentially rectangular sealing body 6 . These tabs 15 make it easier to grip the sealing body 6, so that it is easier to remove or attach the sealing body 6 from or to the base body 5.
  • the sealing body 6 and the base body 5 have structures that correspond to one another, with the structure of the base body 5 being designed as a receiving structure 14 in a similar way, as was the case in the first exemplary embodiment, and the sealing body 6 corresponding on its side facing the base body 5 Counter-structures 16 has.
  • a holding section 12 of the sealing body 6 engages behind the outwardly protruding edge 13 of the base body 5 on a side of the edge 13 facing away from the front side 3. This is in particular the 13 to be taken, which shows a sectional view of the container 1.
  • the sealing body 6 has an undercut.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
EP21184546.6A 2021-07-08 2021-07-08 Procédé de fermeture d'un récipient destiné à la réception des aliments ou des boissons au moyen d'un feuille de recouvrement thermoscellable Pending EP4116220A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP21184546.6A EP4116220A1 (fr) 2021-07-08 2021-07-08 Procédé de fermeture d'un récipient destiné à la réception des aliments ou des boissons au moyen d'un feuille de recouvrement thermoscellable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21184546.6A EP4116220A1 (fr) 2021-07-08 2021-07-08 Procédé de fermeture d'un récipient destiné à la réception des aliments ou des boissons au moyen d'un feuille de recouvrement thermoscellable

Publications (1)

Publication Number Publication Date
EP4116220A1 true EP4116220A1 (fr) 2023-01-11

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ID=76845106

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21184546.6A Pending EP4116220A1 (fr) 2021-07-08 2021-07-08 Procédé de fermeture d'un récipient destiné à la réception des aliments ou des boissons au moyen d'un feuille de recouvrement thermoscellable

Country Status (1)

Country Link
EP (1) EP4116220A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005042373A1 (fr) * 2003-11-04 2005-05-12 Toyo Seikan Kaisha, Ltd. Recipient en polyester, procede de production du recipient et procede de scellement du recipient en polyester
EP3296227A1 (fr) * 2016-09-14 2018-03-21 R. Faerch Plast A/S Contenant pour produits alimentaires
US20190225401A1 (en) * 2018-01-23 2019-07-25 Sonoco Development, Inc. Packaging Container With Preformed Sealing Ring

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005042373A1 (fr) * 2003-11-04 2005-05-12 Toyo Seikan Kaisha, Ltd. Recipient en polyester, procede de production du recipient et procede de scellement du recipient en polyester
EP3296227A1 (fr) * 2016-09-14 2018-03-21 R. Faerch Plast A/S Contenant pour produits alimentaires
US20190225401A1 (en) * 2018-01-23 2019-07-25 Sonoco Development, Inc. Packaging Container With Preformed Sealing Ring

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