EP0790934B1 - Package with lid made by deep drawing method - Google Patents

Package with lid made by deep drawing method Download PDF

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Publication number
EP0790934B1
EP0790934B1 EP95937913A EP95937913A EP0790934B1 EP 0790934 B1 EP0790934 B1 EP 0790934B1 EP 95937913 A EP95937913 A EP 95937913A EP 95937913 A EP95937913 A EP 95937913A EP 0790934 B1 EP0790934 B1 EP 0790934B1
Authority
EP
European Patent Office
Prior art keywords
wall
edge
lid
package
container part
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.)
Expired - Lifetime
Application number
EP95937913A
Other languages
German (de)
French (fr)
Other versions
EP0790934A1 (en
Inventor
Juhani Aromaa
Jyrki Saarinen
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.)
Satatuote Oy
Original Assignee
Satatuote Oy
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 Satatuote Oy filed Critical Satatuote Oy
Publication of EP0790934A1 publication Critical patent/EP0790934A1/en
Application granted granted Critical
Publication of EP0790934B1 publication Critical patent/EP0790934B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B65D43/00—Lids or covers for rigid or semi-rigid containers
    • B65D43/02—Removable lids or covers
    • B65D43/0202—Removable lids or covers without integral tamper element
    • B65D43/0204—Removable lids or covers without integral tamper element secured by snapping over beads or projections
    • B65D43/0212—Removable lids or covers without integral tamper element secured by snapping over beads or projections only on the outside, or a part turned to the outside, of the mouth
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018—Overall construction of the lid
    • B65D2543/00259—Materials used
    • B65D2543/00296—Plastic
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
    • B65D2543/0049—Contact between the container and the lid on the inside or the outside of the container on the inside, or a part turned to the inside of the mouth of the container
    • B65D2543/00509—Cup
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
    • B65D2543/00537—Contact between the container and the lid on the inside or the outside of the container on the outside, or a part turned to the outside of the mouth of the container
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
    • B65D2543/00555—Contact between the container and the lid on the inside or the outside of the container on both the inside and the outside
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00592—Snapping means
    • B65D2543/00601—Snapping means on the container
    • B65D2543/00611—Profiles
    • B65D2543/0062—Groove or hollow bead
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00592—Snapping means
    • B65D2543/00601—Snapping means on the container
    • B65D2543/00675—Periphery concerned
    • B65D2543/00685—Totality
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00592—Snapping means
    • B65D2543/00712—Snapping means on the lid
    • B65D2543/00722—Profiles
    • B65D2543/00731—Groove or hollow bead
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00592—Snapping means
    • B65D2543/00712—Snapping means on the lid
    • B65D2543/00787—Periphery concerned
    • B65D2543/00796—Totality
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00824—Means for facilitating removing of the closure
    • B65D2543/00833—Integral tabs, tongues, handles or similar
    • B65D2543/00842—Integral tabs, tongues, handles or similar outside of the lid

Definitions

  • the invention relates to a package made by the deep drawing method, comprising a container part and a lid, the edge of the container part comprising an inner wall, the upper part of the inner wall having an upper edge inclined outwards from it, and an outer wall inclined downwards from the outer edge of the upper edge, the outer wall of the container part comprising at least one curved part; the edge of the lid having an upwardly inclined inner wall, the upper part of said inner wall having an upper edge inclined outwards from it, and an outer wall inclined downwards from the outer edge of the upper edge, the outer wall of the edge of the lid comprising at least one curved part, whereby the container part and the lid may be laid one on top of the other so that they are substantially tightly sealed against each other.
  • a prior art package made by the deep drawing method is a box having a container part whose edge is bent outwardly, inclining downwards.
  • the lid to be placed on the box is shaped so that its middle part is below the edges of the container part, the edges of the lid being bent in accordance with the edges of the container part. Furthermore, the edge of the lid is bent to fit below the outermost part of the edge of the container part, whereby the lid is locked in place.
  • the container part is sealed against the lid by the outermost tip of its edge, and there is thus a line-shaped contact surface between the lid and the container part.
  • a line-shaped contact surface of this kind is not sufficient, however, to ensure tightness when the box is being handled, and odours and liquid products are thus allowed to escape the box.
  • Deep drawing method has also been used for making packages in which the edge of the container part is bent substantially rectangularly, first outwards, then downwards, and once more outwards.
  • the lid to be placed onto the box is designed in the corresponding manner.
  • recesses have been made in the corners of the lid, the insides of said recesses being pressed against the outer edges of the container part.
  • a box of this kind whose container part and lid are supported by linear surfaces, is not sufficiently tight either for packing strong-odoured substances and liquids.
  • GB 2 236 099 discloses a package comprising an annular recess in the container part and indents in the lid to permit snap fitting. Such a package is not tight enough for for example liquids.
  • EP 0 033 266 discloses a package having rather thick walls whereby the package of EP 0 033 266 can not be made by the deep drawing method.
  • EP 0 033 266 further discloses a package comprising curved parts being arranged on the upper edges of the lid and the container part.
  • the object of this invention is to achieve a package made by the deep drawing method, which package is so tight that it can be used for storing strong-odoured substances and liquids.
  • the package of the invention is characterized in that at least two pairs of curved parts curved to the opposite directions are arranged on the outer wall of the container part and on the outer wall of the edge of the lid the cross-section of the curved parts being substantially of the same shape throughout the periphery of the package, the contacting surfaces of said curved parts being substantially of the same shape and size, and, upon the package being closed, substantially in the same position whereby the curved parts tighten the lid to the container part.
  • the essential idea of the invention is that a cross-sectionally curved part surrounding the box is correspondingly arranged at the outermost part of the edge of the lid.
  • the curved part of the edge of the container part and the curved part of the edge of the lid are arranged to be substantially of the same size and shape, and situated in the same position.
  • the essential advantage of the invention is that the curved parts of the container part and the lid form a large contact surface between each other, which results in a tight package.
  • a contact surface of this kind, formed by two curved surfaces, also allows tolerances in manufacturing the package, however, without the tightness of the package remarkably suffering.
  • Figure 1 shows a package 1, made of thin plastic material.
  • the package 1 comprises a container part 2 and a lid 3. At the edge of the lid 3, there is a projecting part 3f in one corner, and lifting the projecting part is the easiest way to open the package.
  • the container part 2 and the lid 3 are made by the deep drawing method.
  • a plastic film is first warmed. Thereafter, the warmed plastic film is brought between moulds, whereby air is sucked from one side of the film, and air is led to the other side of the film, as a result of which the plastic film is shaped in accordance with the mould. Thereafter, the moulded plastic film is removed from the mould, and the moulded objects are cut out of the film.
  • Figure 2 shows a cross-section of the edge of the package 1 having one pair of curved parts.
  • the numbering in Figure 2 corresponds to that in Figure 1.
  • the entire cross-section of the edge of the package 1 is substantially of the same shape.
  • the edge of the container part 2 of the package 1 is shaped so that the inner wall 2a is first bent outwards, and then downwards to form an outer wall 2b, and once more outwards to form a flange 2e.
  • An inwardly curved part 2c is formed on the outer wall 2b.
  • the middle part of the lid 3 is below the upper edge of the container part 2.
  • the edge of the lid 3 is bent so that the inner wall 3a of the lid is parallel with the inner wall 2a of the container part 2, and said inner walls 3a and 2a are substantially tightly against each other.
  • the upper part of the edge of the lid 3 is further bent so that it is parallel with the upper edge of the container part 2.
  • the edge of the lid 3 is further bent to form an outer wall 3b parallel with the outer wall 2b of the container part 2 and so that it is firmly against it.
  • the outer wall 3b of the edge of the lid 3 is further bent so that it forms a corresponding flange 3e as the one at the edge of the container part 2.
  • Flanges 2e and 3e stiffen the structure of the outer wall 2b of the edge of the container part 2 and the lower part of the outer wall 3b of the edge of the lid 3.
  • an inwardly curved part 3c corresponding to the curved part 2c of the container part is arranged on the outer wall 3b of the lid 3.
  • the contacting surfaces of the curved parts 2c and 3c are substantially of the same shape and size, and in addition, upon the lid being closed, substantially at the same level.
  • inner walls 2a and 3a rest against each other, they form an integral structure that supports the entire package.
  • the inner wall 2a of the container part 2 pushes the inner wall 3a of the lid 3 and further the outer wall 3b of the lid 3 inwards, whereby the seam between the outer wall 2b of the container part 2 and the outer wall 3b of the lid 3 remains tight.
  • the curved part 3c of the lid 3 fits in the curved part 2c of the container part 2, whereby the lid 3 is locked into the container part 2.
  • Curved parts 2c and 3c compose a curved sealing face between each other, whereby the package is made so tight that it can also be used for storing strong-odoured substances and liquids.
  • a curved sealing face of this kind also allows tolerance and handling of the package, without the tightness substantially suffering.
  • the curved parts 2c and 3c are advantageously shaped like a curve of a circle.
  • the curved parts 2c and 3c may be curved inwards, as shown in Figure 2, or they may be curved outwards.
  • Figure 3 shows the cross-section of the edge of the package of the invention.
  • the numbering in Figure 3 corresponds to that in Figures 1 and 2.
  • Curved parts 2c and 3c On the outer wall 2b of the edge of the container part 2, and correspondingly on the outer wall 3b of the edge of the lid 3, there are curved parts 2c and 3c, and above them other curved parts 2d and 3d.
  • Curved parts 2c and 2d, as well as 3c and 3d may be curved to the opposite directions, as shown in Figure 3, or they may also be curved to the same direction.
  • Curved parts 2c and 2d, as well as 3c and 3d may also be situated some distance away from each other vertically, as shown in Figure 3, or they may follow immediately one after another.
  • curved parts 2c and 2d as well as 3c and 3d are curved to the opposite directions and follow immediately one after another in the vertical direction, they will form a structure having a substantially s-shaped cross-section.
  • the material of the package 1 may be any plastics formable by means of the deep drawing method.
  • the shape of the package may also vary freely; it may be e.g. round, rectangular or quadrangular. Curved parts 2c and 2d as well as 3c and 3d may further be of a parabolic or unsymmetrical shape.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)

Description

The invention relates to a package made by the deep drawing method, comprising a container part and a lid, the edge of the container part comprising an inner wall, the upper part of the inner wall having an upper edge inclined outwards from it, and an outer wall inclined downwards from the outer edge of the upper edge, the outer wall of the container part comprising at least one curved part; the edge of the lid having an upwardly inclined inner wall, the upper part of said inner wall having an upper edge inclined outwards from it, and an outer wall inclined downwards from the outer edge of the upper edge, the outer wall of the edge of the lid comprising at least one curved part, whereby the container part and the lid may be laid one on top of the other so that they are substantially tightly sealed against each other.
A prior art package made by the deep drawing method is a box having a container part whose edge is bent outwardly, inclining downwards. The lid to be placed on the box is shaped so that its middle part is below the edges of the container part, the edges of the lid being bent in accordance with the edges of the container part. Furthermore, the edge of the lid is bent to fit below the outermost part of the edge of the container part, whereby the lid is locked in place. The container part is sealed against the lid by the outermost tip of its edge, and there is thus a line-shaped contact surface between the lid and the container part. A line-shaped contact surface of this kind is not sufficient, however, to ensure tightness when the box is being handled, and odours and liquid products are thus allowed to escape the box.
Deep drawing method has also been used for making packages in which the edge of the container part is bent substantially rectangularly, first outwards, then downwards, and once more outwards. The lid to be placed onto the box is designed in the corresponding manner. For securing the lid, recesses have been made in the corners of the lid, the insides of said recesses being pressed against the outer edges of the container part. A box of this kind, whose container part and lid are supported by linear surfaces, is not sufficiently tight either for packing strong-odoured substances and liquids.
GB 2 236 099 discloses a package comprising an annular recess in the container part and indents in the lid to permit snap fitting. Such a package is not tight enough for for example liquids. EP 0 033 266 discloses a package having rather thick walls whereby the package of EP 0 033 266 can not be made by the deep drawing method. EP 0 033 266 further discloses a package comprising curved parts being arranged on the upper edges of the lid and the container part.
The object of this invention is to achieve a package made by the deep drawing method, which package is so tight that it can be used for storing strong-odoured substances and liquids.
The package of the invention is characterized in that at least two pairs of curved parts curved to the opposite directions are arranged on the outer wall of the container part and on the outer wall of the edge of the lid the cross-section of the curved parts being substantially of the same shape throughout the periphery of the package, the contacting surfaces of said curved parts being substantially of the same shape and size, and, upon the package being closed, substantially in the same position whereby the curved parts tighten the lid to the container part.
The essential idea of the invention is that a cross-sectionally curved part surrounding the box is correspondingly arranged at the outermost part of the edge of the lid. The curved part of the edge of the container part and the curved part of the edge of the lid are arranged to be substantially of the same size and shape, and situated in the same position.
The essential advantage of the invention is that the curved parts of the container part and the lid form a large contact surface between each other, which results in a tight package. A contact surface of this kind, formed by two curved surfaces, also allows tolerances in manufacturing the package, however, without the tightness of the package remarkably suffering.
The invention will be disclosed in greater detail in the attached drawing, in which
  • Figure 1 shows an perspective view of the package of the invention,
  • Figure 2 shows a cross-section of the edge of the package in accordance with Figure 1, and
  • Figure 3 shows a cross-section of the edge of a package in accordance with a second embodiment of the invention.
    • Figure 1 shows a package 1, made of thin plastic material. The package 1 comprises a container part 2 and a lid 3. At the edge of the lid 3, there is a projecting part 3f in one corner, and lifting the projecting part is the easiest way to open the package.
    The container part 2 and the lid 3 are made by the deep drawing method. In the deep drawing method, a plastic film is first warmed. Thereafter, the warmed plastic film is brought between moulds, whereby air is sucked from one side of the film, and air is led to the other side of the film, as a result of which the plastic film is shaped in accordance with the mould. Thereafter, the moulded plastic film is removed from the mould, and the moulded objects are cut out of the film.
    Figure 2 shows a cross-section of the edge of the package 1 having one pair of curved parts. The numbering in Figure 2 corresponds to that in Figure 1. The entire cross-section of the edge of the package 1 is substantially of the same shape. The edge of the container part 2 of the package 1 is shaped so that the inner wall 2a is first bent outwards, and then downwards to form an outer wall 2b, and once more outwards to form a flange 2e. An inwardly curved part 2c is formed on the outer wall 2b.
    The middle part of the lid 3 is below the upper edge of the container part 2. The edge of the lid 3 is bent so that the inner wall 3a of the lid is parallel with the inner wall 2a of the container part 2, and said inner walls 3a and 2a are substantially tightly against each other. The upper part of the edge of the lid 3 is further bent so that it is parallel with the upper edge of the container part 2. The edge of the lid 3 is further bent to form an outer wall 3b parallel with the outer wall 2b of the container part 2 and so that it is firmly against it. The outer wall 3b of the edge of the lid 3 is further bent so that it forms a corresponding flange 3e as the one at the edge of the container part 2. Flanges 2e and 3e stiffen the structure of the outer wall 2b of the edge of the container part 2 and the lower part of the outer wall 3b of the edge of the lid 3. On the outer wall 3b of the lid 3, an inwardly curved part 3c corresponding to the curved part 2c of the container part is arranged. The contacting surfaces of the curved parts 2c and 3c are substantially of the same shape and size, and in addition, upon the lid being closed, substantially at the same level.
    Since inner walls 2a and 3a rest against each other, they form an integral structure that supports the entire package. Thus, e.g. when squeezing the container part 2 of the package 1 from outwards, the inner wall 2a of the container part 2 pushes the inner wall 3a of the lid 3 and further the outer wall 3b of the lid 3 inwards, whereby the seam between the outer wall 2b of the container part 2 and the outer wall 3b of the lid 3 remains tight.
    Upon pressing the lid 3 onto the container part 2, the curved part 3c of the lid 3 fits in the curved part 2c of the container part 2, whereby the lid 3 is locked into the container part 2.
    Curved parts 2c and 3c compose a curved sealing face between each other, whereby the package is made so tight that it can also be used for storing strong-odoured substances and liquids. A curved sealing face of this kind also allows tolerance and handling of the package, without the tightness substantially suffering. The curved parts 2c and 3c are advantageously shaped like a curve of a circle. The curved parts 2c and 3c may be curved inwards, as shown in Figure 2, or they may be curved outwards.
    Figure 3 shows the cross-section of the edge of the package of the invention. The numbering in Figure 3 corresponds to that in Figures 1 and 2. On the outer wall 2b of the edge of the container part 2, and correspondingly on the outer wall 3b of the edge of the lid 3, there are curved parts 2c and 3c, and above them other curved parts 2d and 3d. Curved parts 2c and 2d, as well as 3c and 3d may be curved to the opposite directions, as shown in Figure 3, or they may also be curved to the same direction. Curved parts 2c and 2d, as well as 3c and 3d may also be situated some distance away from each other vertically, as shown in Figure 3, or they may follow immediately one after another. Provided that curved parts 2c and 2d as well as 3c and 3d are curved to the opposite directions and follow immediately one after another in the vertical direction, they will form a structure having a substantially s-shaped cross-section.
    The drawing and the explanation associated therewith are only intended to illustrate the idea of the invention. The invention may vary in its details within the scope of the attached claims. Thus, the material of the package 1 may be any plastics formable by means of the deep drawing method. The shape of the package may also vary freely; it may be e.g. round, rectangular or quadrangular. Curved parts 2c and 2d as well as 3c and 3d may further be of a parabolic or unsymmetrical shape.

    Claims (3)

    1. A package made by the deep drawing method, comprising a container part (2) and a lid (3), the edge of the container part (2) comprising an inner wall (2a), the upper part of the inner wall (2a) having an upper edge inclined outwards from it, and an outer wall (2b) inclined downwards from the outer edge of the upper edge, the outer wall (2b) of the container part (2) comprising at least one curved part (2c); the edge of the lid (3) having an upwardly inclined inner wall (3a), the upper part of said inner wall (3a) having an upper edge inclined outwards from it, and an outer wall (3b) inclined downwards from the outer edge of the upper edge, the outer wall (3b) of the edge of the lid (3) comprising at least one curved part (3c), whereby the container part (2) and the lid (3) may be laid one on top of the other so that they are substantially tightly sealed against each other, characterized in that at least two pairs of curved parts (2c, 2d, 3c,3d) curved to the opposite directions are arranged on the outer wall (2b) of the container part (2) and on the outer wall (3b) of the edge of the lid (3) the cross-section of the curved parts (2c, 2d, 3c, 3d) being substantially of the same shape throughout the periphery of the package, the contacting surfaces of said curved parts being substantially of the same shape and size, and, upon the package (1) being closed, substantially in the same position whereby the curved parts (2c, 2d, 3c, 3d) tighten the lid (3) to the container part (2).
    2. A package as claimed in claim 1, characterized in that the curved parts (2c, 2d, 3c, 3d) are substantially shaped like the curve of a circle.
    3. A package as claimed in claim 1 or 2, characterized in that in the lower part of the outer wall (2b) of the edge of the container part (2) and in the lower part of the outer wall (3b) of the edge of the lid (3), there are flanges (2e, 3e) inclined outwards from the outer walls (2b, 3b).
    EP95937913A 1994-11-15 1995-11-14 Package with lid made by deep drawing method Expired - Lifetime EP0790934B1 (en)

    Applications Claiming Priority (3)

    Application Number Priority Date Filing Date Title
    FI945377 1994-11-15
    FI945377A FI109893B (en) 1994-11-15 1994-11-15 A packaging made by molding method
    PCT/FI1995/000630 WO1996015042A1 (en) 1994-11-15 1995-11-14 Package with lid made by deep drawing method

    Publications (2)

    Publication Number Publication Date
    EP0790934A1 EP0790934A1 (en) 1997-08-27
    EP0790934B1 true EP0790934B1 (en) 2001-06-06

    Family

    ID=8541809

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP95937913A Expired - Lifetime EP0790934B1 (en) 1994-11-15 1995-11-14 Package with lid made by deep drawing method

    Country Status (6)

    Country Link
    EP (1) EP0790934B1 (en)
    AU (1) AU3873995A (en)
    DE (1) DE69521213D1 (en)
    DK (1) DK0790934T3 (en)
    FI (1) FI109893B (en)
    WO (1) WO1996015042A1 (en)

    Cited By (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US6883678B2 (en) * 2002-04-23 2005-04-26 Hsin-Hung Chou Food container sealing structure

    Families Citing this family (2)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US6168044B1 (en) * 1998-06-25 2001-01-02 S. C. Johnson Home Storage, Inc. Container having a snap fit selectively detachable lid
    DE102009015343B4 (en) * 2009-03-27 2010-11-25 Multivac Sepp Haggenmüller Gmbh & Co. Kg Method for producing a packaging and packaging machine

    Family Cites Families (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US4180179A (en) * 1978-08-31 1979-12-25 The Continental Group, Inc. Beaded snaplock closure
    FR2473995A1 (en) 1980-01-23 1981-07-24 Vulliez Expl Ets CRIMPING METHOD, IN PARTICULAR FOR PLASTIC PACKAGING, AND SEALED PACKAGING OBTAINED BY THIS PROCESS
    GB2236099A (en) 1989-09-07 1991-03-27 Metal Box Plc Containers

    Cited By (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US6883678B2 (en) * 2002-04-23 2005-04-26 Hsin-Hung Chou Food container sealing structure

    Also Published As

    Publication number Publication date
    WO1996015042A1 (en) 1996-05-23
    FI109893B (en) 2002-10-31
    DK0790934T3 (en) 2001-09-03
    AU3873995A (en) 1996-06-06
    FI945377A (en) 1996-05-16
    DE69521213D1 (en) 2001-07-12
    EP0790934A1 (en) 1997-08-27
    FI945377A0 (en) 1994-11-15

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