EP3028958B1 - Thermoformed container - Google Patents

Thermoformed container Download PDF

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Publication number
EP3028958B1
EP3028958B1 EP15003402.3A EP15003402A EP3028958B1 EP 3028958 B1 EP3028958 B1 EP 3028958B1 EP 15003402 A EP15003402 A EP 15003402A EP 3028958 B1 EP3028958 B1 EP 3028958B1
Authority
EP
European Patent Office
Prior art keywords
container
lower portion
recesses
wedge
hollow body
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.)
Active
Application number
EP15003402.3A
Other languages
German (de)
French (fr)
Other versions
EP3028958A1 (en
Inventor
José Manuel Hernández Socastro
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.)
Mecanica Y Tecnologia Alimentaria SL
Original Assignee
Mecanica Y Tecnologia Alimentaria SL
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
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Publication of EP3028958A1 publication Critical patent/EP3028958A1/en
Application granted granted Critical
Publication of EP3028958B1 publication Critical patent/EP3028958B1/en
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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
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/70—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for
    • B65D85/72—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for for edible or potable liquids, semiliquids, or plastic or pasty materials
    • 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
    • B65D1/26—Thin-walled containers, e.g. formed by deep-drawing operations
    • 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
    • B65D1/40—Details of walls
    • B65D1/42—Reinforcing or strengthening parts or members
    • B65D1/46—Local reinforcements, e.g. adjacent closures
    • 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
    • B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
    • B65D25/34—Coverings or external coatings
    • B65D25/36—Coverings or external coatings formed by applying sheet material
    • 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

Definitions

  • the object of the invention is a thermoformed container with a hollow body which has a flat base, a sidewall extending from the periphery of the base, having said sidewall an upper end delimitating the mouth of the container and extending towards the exterior of the container in form of a perimetric flange; having the hollow body of the container an upper portion with a constant cross section, bearing an external decoration web, and a lower portion comprised between the upper portion and the base of the container having a tapering structure in descending direction.
  • thermoformed container of the invention is preferably, although not exclusively, applicable to the packing of food products.
  • thermoformed containers are known in the market aimed at the food packing field, for packing various food products, such as yogurt or dairy dessert products.
  • a previous embodiment of this type of containers comprising the features of the preamble of claim 1, and described in document CA 2830032 A1 has a hollow body with a flat base, its periphery extending in a sidewall which has an upper end delimitating the mouth of the container and extending towards the exterior of the container in form a perimetric flange.
  • Said container has in its hollow body an upper portion with constant cross section bearing an external decoration web and a lower portion with tapering cross section in descending direction, comprised between the mentioned upper portion and the base of the container.
  • the lower portion In this type of containers, it is known the lower portion to have a curved profile to facilitate the extraction of most of the product contained within the container by means of a small spoon.
  • thermoformed containers made out from a sheet of plastic material, have a lower strength in the transition area between the upper portion and the lower portion of the container, being necessary to oversize the thickness of the plastic sheet in order that said transition area has the sufficient strength to permit the nesting and transport of the containers in a safe form.
  • Said oversizing determines the rest of the parts of the container to have a larger thickness than necessary, deriving therefrom an increase of the plastic material necessary for the manufacture of the container.
  • Document DE 2755996 A1 discloses a cup-shaped container for milk coagulates such a yoghurt, etc.
  • the container has a base, a sidewall and a removable lid.
  • the sidewall has bosses and recesses on the inside spaced round the periphery for at least part of its height.
  • the bosses and recesses can be formed in the bottom portion and/or in a funnel section joining onto it, or on a stepped portion and extending into the sidewall.
  • the bosses and recesses can be rib-shaped, all of the same width and in line with each other.
  • the ribs can be interrupted at one or more levels by a bead protruding inwards, the bead being situated between the base portion and the funnel section.
  • Document DE 202007016006 describes a container for containing liquid and/or pasty products, in particular dairy products, comprising a cup-like shell forming an inner boundary surface of the container, and a cover which covers at least partially an outer limiting surface of the shell. At least one radially inwardly extending indentation is arranged in a peripheral surface of the base region. The indentation is provided with an upwardly facing outer boundary surface, and a lower edge of the cover can be placed against the upwardly facing boundary surface of the bottom region.
  • Document US 2007017920 A1 discloses a blow molded plastic container configured to hold food or food-related products, including cheese.
  • the container includes extended vertical ribs that have a height that spans at least about ninety-five percent of a height of a lower portion of the container.
  • the container includes a reinforced annular leg that is greater than the thickness of the container wall.
  • the stacking bead is positioned between the lower and upper container walls, and the lower container wall is inwardly offset from the upper container wall.
  • the container bottom is reinforced with continuous ribbing.
  • thermoformed object of this invention of the type described in the precharacterizing part of the main claim, has technical characteristics aimed at solving the above mentioned drawback and to provide the body of the container with a higher strength to compression in the weakest area, which is the transition area between the upper portion with a uniform cross section and the lower portion with a tapering cross section, making the use of an oversized plastic sheet for the manufacture of the container unnecessary.
  • Another objective of the invention is to obtain the reduction of the quantity of plastic material for the manufacture of the container, for needing a lesser thickness of the material in the less weak areas of the same.
  • the sidewall of the container has wedge like recesses arranged in correspondence with the upper end of the lower portion of the container and distributed around the body of the container; and groups of reinforcement hollow embossements which protrude from the body of the container and are vertically oriented.
  • the mentioned wedge like recesses are arranged in the lower portion of the container and distributed around the hollow body of the container, with an upper end of the wedge like recesses coinciding with the upper end of the lower portion of the container.
  • the mentioned reinforcement embossments start from the upper portion of the container and end in an intermediate area of the lower portion of the container, being the upper ends of said reinforcements embossments arranged under the external decoration web.
  • the wedge like recesses in number of three or more, arranged at the same distance to one another, have the object to reinforce the weakest part of the container, which is precisely the lower end of the upper portion, that is, the place in which the decoration web ends up, beginning the lower portion of the container.
  • wedge like recesses have an effect similar to load beams in the weaker part of the container, transmitting a part of the loads to a lower area of the container, which has a smaller section and therefore, is stronger.
  • the above mentioned reinforcement embossments have as well the object of reinforcing the container as they start from the upper portion of the container, so that the decoration web overlaps them extending said embossments along the lower portion up to an area with a higher resistance.
  • thermoformed container shown in Figure 1 comprises a hollow body (1) with a flat base (11) a lateral wall delimitating in the end opposite to the base the mouth (12) of the container.
  • the container shows a perimetric flange (13) around the mouth (12).
  • the hollow body (1) has an upper portion (14) with a constant cross section, for example cylindrical cross section, bearing an external decoration web (2) and a lower portion (15) with tapering cross section in descending direction, comprised between the upper portion (14) and the base (11).
  • the said lower portion (15) has a curved convex profile in its external face.
  • the lateral wall of the container has wedge like recesses (16) arranged in correspondence with the upper end of the lower portion (15) and distributed around the body of the container.
  • the wedge like recesses (16) are located in the lower portion (15) of the hollow body (1) and have upper ends coinciding with the upper end of the lower portion (15) and a depth which decreases towards the lower area.
  • Said lateral wall has as well groups of reinforcement embossments (17) which are hollow, elongated, protruding from the hollow body (1) of the container.
  • the above mentioned reinforcement embossments (17) are directed vertically starting from the upper portion (14) of the container and extending to an intermediate area of the lower portion (15), increasing the resistance to the compression of the container.
  • the container has three or more wedge like recesses (16) and a similar number of groups of reinforcement embossments (17) regularly distributed around the container.
  • the external decoration web (2) covers the part of the reinforcement embossments (17) defined in the upper portion (14) of the container.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Packages (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
  • Stackable Containers (AREA)

Description

    Object of the invention.
  • The object of the invention is a thermoformed container with a hollow body which has a flat base, a sidewall extending from the periphery of the base, having said sidewall an upper end delimitating the mouth of the container and extending towards the exterior of the container in form of a perimetric flange; having the hollow body of the container an upper portion with a constant cross section, bearing an external decoration web, and a lower portion comprised between the upper portion and the base of the container having a tapering structure in descending direction.
    • Field of application of the invention
  • The thermoformed container of the invention is preferably, although not exclusively, applicable to the packing of food products.
    • State of the art
  • Currently, different types of plastic thermoformed containers are known in the market aimed at the food packing field, for packing various food products, such as yogurt or dairy dessert products.
  • A previous embodiment of this type of containers, comprising the features of the preamble of claim 1, and described in document CA 2830032 A1 has a hollow body with a flat base, its periphery extending in a sidewall which has an upper end delimitating the mouth of the container and extending towards the exterior of the container in form a perimetric flange. Said container, the same as other existing in the market, has in its hollow body an upper portion with constant cross section bearing an external decoration web and a lower portion with tapering cross section in descending direction, comprised between the mentioned upper portion and the base of the container.
  • In this type of containers, it is known the lower portion to have a curved profile to facilitate the extraction of most of the product contained within the container by means of a small spoon.
  • These type of thermoformed containers, made out from a sheet of plastic material, have a lower strength in the transition area between the upper portion and the lower portion of the container, being necessary to oversize the thickness of the plastic sheet in order that said transition area has the sufficient strength to permit the nesting and transport of the containers in a safe form.
  • Said oversizing determines the rest of the parts of the container to have a larger thickness than necessary, deriving therefrom an increase of the plastic material necessary for the manufacture of the container.
  • Document DE 2755996 A1 discloses a cup-shaped container for milk coagulates such a yoghurt, etc. The container has a base, a sidewall and a removable lid. The sidewall has bosses and recesses on the inside spaced round the periphery for at least part of its height. The bosses and recesses can be formed in the bottom portion and/or in a funnel section joining onto it, or on a stepped portion and extending into the sidewall. The bosses and recesses can be rib-shaped, all of the same width and in line with each other. The ribs can be interrupted at one or more levels by a bead protruding inwards, the bead being situated between the base portion and the funnel section.
  • Document DE 202007016006 describes a container for containing liquid and/or pasty products, in particular dairy products, comprising a cup-like shell forming an inner boundary surface of the container, and a cover which covers at least partially an outer limiting surface of the shell. At least one radially inwardly extending indentation is arranged in a peripheral surface of the base region. The indentation is provided with an upwardly facing outer boundary surface, and a lower edge of the cover can be placed against the upwardly facing boundary surface of the bottom region.
  • Document US 2007017920 A1 discloses a blow molded plastic container configured to hold food or food-related products, including cheese. In a first embodiment, the container includes extended vertical ribs that have a height that spans at least about ninety-five percent of a height of a lower portion of the container. In a second embodiment, the container includes a reinforced annular leg that is greater than the thickness of the container wall. In a third embodiment, the stacking bead is positioned between the lower and upper container walls, and the lower container wall is inwardly offset from the upper container wall. In a fourth embodiment, the container bottom is reinforced with continuous ribbing.
  • The present inventor does not know the existence of prior embodiments permitting to solve in a satisfactory way the above mentioned drawback.
    • Description of the invention
  • The thermoformed object of this invention, of the type described in the precharacterizing part of the main claim, has technical characteristics aimed at solving the above mentioned drawback and to provide the body of the container with a higher strength to compression in the weakest area, which is the transition area between the upper portion with a uniform cross section and the lower portion with a tapering cross section, making the use of an oversized plastic sheet for the manufacture of the container unnecessary.
  • Another objective of the invention is to obtain the reduction of the quantity of plastic material for the manufacture of the container, for needing a lesser thickness of the material in the less weak areas of the same.
  • To that end and according to the invention, the sidewall of the container has wedge like recesses arranged in correspondence with the upper end of the lower portion of the container and distributed around the body of the container; and groups of reinforcement hollow embossements which protrude from the body of the container and are vertically oriented.
  • The mentioned wedge like recesses are arranged in the lower portion of the container and distributed around the hollow body of the container, with an upper end of the wedge like recesses coinciding with the upper end of the lower portion of the container.
  • The mentioned reinforcement embossments start from the upper portion of the container and end in an intermediate area of the lower portion of the container, being the upper ends of said reinforcements embossments arranged under the external decoration web.
  • The wedge like recesses, in number of three or more, arranged at the same distance to one another, have the object to reinforce the weakest part of the container, which is precisely the lower end of the upper portion, that is, the place in which the decoration web ends up, beginning the lower portion of the container.
  • These wedge like recesses have an effect similar to load beams in the weaker part of the container, transmitting a part of the loads to a lower area of the container, which has a smaller section and therefore, is stronger.
  • The above mentioned reinforcement embossments, have as well the object of reinforcing the container as they start from the upper portion of the container, so that the decoration web overlaps them extending said embossments along the lower portion up to an area with a higher resistance.
  • This features bring about improvements in respect to the current containers as they improve the resistance to compression of the container (manufacture, nesting for transport and storage, etc) and bring savings of the plastic material for its manufacture of about 10%.
    • Description of the drawings
  • To complete the description and with the aim to facilitate the understanding of the features of the invention a set of drawings is annexed to this description in which in an illustrative, but not limiting way, the follow has been shown:
    • Figure 1 shows a diagrammatic front view of a thermoformed container, according to the invention.
    Preferred embodiment of the invention
  • The thermoformed container shown in Figure 1 comprises a hollow body (1) with a flat base (11) a lateral wall delimitating in the end opposite to the base the mouth (12) of the container. The container shows a perimetric flange (13) around the mouth (12). The hollow body (1) has an upper portion (14) with a constant cross section, for example cylindrical cross section, bearing an external decoration web (2) and a lower portion (15) with tapering cross section in descending direction, comprised between the upper portion (14) and the base (11).
  • In this case, the said lower portion (15) has a curved convex profile in its external face. The lateral wall of the container has wedge like recesses (16) arranged in correspondence with the upper end of the lower portion (15) and distributed around the body of the container.
  • The wedge like recesses (16) are located in the lower portion (15) of the hollow body (1) and have upper ends coinciding with the upper end of the lower portion (15) and a depth which decreases towards the lower area.
  • Said lateral wall has as well groups of reinforcement embossments (17) which are hollow, elongated, protruding from the hollow body (1) of the container.
  • The above mentioned reinforcement embossments (17) are directed vertically starting from the upper portion (14) of the container and extending to an intermediate area of the lower portion (15), increasing the resistance to the compression of the container.
  • It has been foreseen that the container has three or more wedge like recesses (16) and a similar number of groups of reinforcement embossments (17) regularly distributed around the container.
  • As can be observed in the annexed figure, the external decoration web (2) covers the part of the reinforcement embossments (17) defined in the upper portion (14) of the container.
  • After having sufficiently described the nature of the invention, as well as a preferred embodiment of the same, it is stated to all effects that the materials, shape, size and arrangement of the described elements can be modified, whenever the changes do not mean the alteration of the essential characteristics of the invention, which is defined by the following claims.

Claims (4)

  1. Thermoformed container; comprising a hollow body (1) having a flat base (11), extending around its periphery in a sidewall with an upper end delimitating the mouth (12) of the container which extends towards the exterior of the container in form of a perimetric flange (13); the hollow body (1) having an upper portion (14) with a constant cross section bearing an external decoration web (2); and a lower portion (15) comprised between the upper portion (14) and the base (11), having a tapering cross section in descending direction; characterized in that the sidewall of the container has wedge like recesses (16) arranged in the lower portion (15) and distributed around the hollow body (1) of the container, the upper ends of said wedge like recesses (16) coinciding with the upper end of the lower portion (15), and groups of reinforcement embossments (17) which are hollow and elongated, protruding from the body of the container and being oriented vertically; said reinforcement embossments (17) starting from the upper portion (14) of the container and ending in an intermediate area of the lower portion (15), upper ends of said reinforcement embossments (17) being located under the external decoration web (2).
  2. Container, according to claim 1, characterized in that the wedge like recesses (16) have a depth which decreases towards the lower area.
  3. Container, according to any of the previous claims, characterized for comprising three or more wedge like recesses (16) and a similar number of groups of reinforcement embossments (17) regularly distributed on the periphery of the container.
  4. Container, according to any of the previous claims, characterized in that the lower portion (15) has a curved convex profile in its external face.
EP15003402.3A 2014-12-02 2015-11-30 Thermoformed container Active EP3028958B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES201400998A ES2572732B1 (en) 2014-12-02 2014-12-02 A thermoformed container

Publications (2)

Publication Number Publication Date
EP3028958A1 EP3028958A1 (en) 2016-06-08
EP3028958B1 true EP3028958B1 (en) 2017-07-19

Family

ID=54780043

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15003402.3A Active EP3028958B1 (en) 2014-12-02 2015-11-30 Thermoformed container

Country Status (3)

Country Link
EP (1) EP3028958B1 (en)
ES (1) ES2572732B1 (en)
MA (1) MA38578B1 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE413975B (en) * 1974-01-09 1980-07-07 Toscara Anstalt SET TO PREPARE YOGHURT OR QUARG AND COOKER FOR IMPLEMENTATION OF THE SET
DE2755996A1 (en) * 1977-12-15 1979-06-21 Bauer Kg J Milk coagulate cup with cap - has bosses and recesses on inside spaced round periphery of cup and has ribs with beads facing inwards
US4375862A (en) * 1981-12-14 1983-03-08 Ekco Products, Inc. Container with dome cover
US7837036B2 (en) * 2005-07-25 2010-11-23 Warren Brent Davis Revocable Trust Reusable nesting and denesting plastic container
DE202007016006U1 (en) * 2007-11-15 2008-04-30 Optipack Gmbh container
CN103562077B (en) * 2011-03-15 2015-08-05 达能日尔维公司 Container with plastic flange and the food product comprising this container are packed

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
ES2572732A1 (en) 2016-06-02
ES2572732B1 (en) 2016-12-19
EP3028958A1 (en) 2016-06-08
MA38578B1 (en) 2017-05-31
MA38578A1 (en) 2016-09-30

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