EP3808674A1 - Lid structure for container - Google Patents

Lid structure for container Download PDF

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Publication number
EP3808674A1
EP3808674A1 EP20154110.9A EP20154110A EP3808674A1 EP 3808674 A1 EP3808674 A1 EP 3808674A1 EP 20154110 A EP20154110 A EP 20154110A EP 3808674 A1 EP3808674 A1 EP 3808674A1
Authority
EP
European Patent Office
Prior art keywords
lid
upper frame
lower frame
seal
container
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.)
Withdrawn
Application number
EP20154110.9A
Other languages
German (de)
English (en)
French (fr)
Inventor
Franck PEREK
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.)
Nutricia NV
Original Assignee
Nutricia NV
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 Nutricia NV filed Critical Nutricia NV
Publication of EP3808674A1 publication Critical patent/EP3808674A1/en
Withdrawn legal-status Critical Current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
    • B65D47/00—Closures with filling and discharging, or with discharging, devices
    • B65D47/04—Closures with discharging devices other than pumps
    • B65D47/06—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages
    • B65D47/08—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages having articulated or hinged closures
    • B65D47/0857—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages having articulated or hinged closures made separately from the base element provided with the spout or discharge passage
    • 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
    • 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
    • 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
    • B65D43/14—Non-removable lids or covers
    • B65D43/16—Non-removable lids or covers hinged for upward or downward movement
    • B65D43/163—Non-removable lids or covers hinged for upward or downward movement the container and the lid being made separately
    • 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
    • B65D51/00—Closures not otherwise provided for
    • B65D51/18—Arrangements of closures with protective outer cap-like covers or of two or more co-operating closures
    • B65D51/20—Caps, lids, or covers co-operating with an inner closure arranged to be opened by piercing, cutting, or tearing
    • 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
    • B65D51/00—Closures not otherwise provided for
    • B65D51/24—Closures not otherwise provided for combined or co-operating with auxiliary devices for non-closing purposes
    • B65D51/246—Closures not otherwise provided for combined or co-operating with auxiliary devices for non-closing purposes provided with eating utensils or spatulas
    • B65D51/247—Closures not otherwise provided for combined or co-operating with auxiliary devices for non-closing purposes provided with eating utensils or spatulas located between an inner and an outer closure
    • 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
    • B65D51/00—Closures not otherwise provided for
    • B65D51/24—Closures not otherwise provided for combined or co-operating with auxiliary devices for non-closing purposes
    • B65D51/26—Closures not otherwise provided for combined or co-operating with auxiliary devices for non-closing purposes with means for keeping contents in position, e.g. resilient means
    • 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
    • B65D53/00—Sealing or packing elements; Sealings formed by liquid or plastics material
    • B65D53/02—Collars or rings
    • 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
    • B65D2543/00064—Shape of the outer periphery
    • B65D2543/0012—Shape of the outer periphery having straight sides, e.g. with curved corners
    • 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
    • B65D2543/00231—Overall construction of the lid made of several pieces
    • 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
    • B65D2543/00435—Lids secured to an intermediate ring or like annular member fixed to the container mouth

Definitions

  • the present invention relates to containers for the packaging and dispensing of products, in particular powdered products such as infant nutrition or milk formula.
  • the invention relates in particular to a lid structure for such a container having a re-closable lid.
  • Powdered material such as infant milk formula
  • Metal cans were initially the preferred container as they were relatively easy and cheap to produce and could be sealed for long term storage.
  • the seal comprised an aluminium foil across the mouth of the container that was removed on first use.
  • the containers were provided with re-closable plastic lids which gripped over the outer rim of the metal can.
  • a measuring scoop was frequently included with the container, either packaged separately or within the can itself. Such cans are however relatively heavy and expensive to produce.
  • the container for holding paint or other liquids is described in US 5975346A .
  • the container includes a body having a bottom wall and a side wall extending from the bottom wall along the periphery of the bottom wall which terminates in an upper rim.
  • the container also includes an annular retaining ring secured to the upper rim and a lid pivotally and detachably mounted to the annular retaining ring for movement between an open position and closed position.
  • a lid structure for a container having a peripheral wall extending to an upper edge and defining a product containing space
  • the lid structure comprising: a lower frame for connection to the upper edge of the tub, the lower frame defining an access opening giving access to the product containing space; an upper frame, connectable to the lower frame in a snap-fit connection and forming a circumferential first seal therewith; and a lid, arranged to close the opening, the lid and the upper frame forming a circumferential second seal.
  • the snap-fit connection is located radially inwardly of the first seal. This effectively means that the snap-fit connection is at an inside of the container with respect to the location of sealing. In the case that the snap fit connection passes through the lower rim, its location inwardly of the seal is of no detriment to the overall sealing. This arrangement allows more convenient manufacturing processes to be applied in e.g. an injection moulding procedure.
  • the snap-fit connection is a permanent connection that cannot be released without otherwise damaging the container.
  • the snap-fit connection may be releasable such that the upper frame and lid may be removed and e.g. used again on another package.
  • the snap fit connection comprises a plurality of downwardly extending barbs on the upper frame, which engage through detent openings in the lower frame.
  • the first and second seals according to the invention are preferably insect-tight seals.
  • an insect-tight seal will be defined as a seal that avoids any opening of 70 microns or greater at any point of the seal.
  • This value is generally adequate to avoid ingress of the smallest insects that may be detrimental to food hygiene.
  • the first and second seals may also be water-tight, preferably to at least 3 cm of water.
  • the first seal comprises an upstanding first rim on the lower frame, which engages within a downward extending first groove of the upper frame, preferably in an interference fit.
  • the first rim and first groove preferably continue uninterrupted around the full circumference of the first seal.
  • a seal of this type has considerable advantage over a single sided seal.
  • the rim and groove can easily be formed to have an interference fit and the insect-tightness described above can be readily achieved.
  • accuracy is dependent upon the dimension of the feature being formed.
  • a groove having a dimension of less than 2 mm a 3 % manufacturing tolerance can be accepted without compromising the seal.
  • the critical size of the feature would be the overall diameter of the opening, For an opening of 10 cm diameter, the same tolerance would give a size variation of 3 mm, making an interference fit difficult to guarantee.
  • the second seal also comprises an upstanding second rim on the upper frame, which engages within a downward extending second groove of the lid, preferably in an interference fit.
  • the second rim and second groove preferably also continue uninterrupted around the full circumference of the second seal.
  • the first and/or second grooves are provided with lead-in structures that extend radially on both sides of the respective grooves by a distance at least equal to a width of the respective first and second rims.
  • lead-in structures that extend radially on both sides of the respective grooves by a distance at least equal to a width of the respective first and second rims.
  • the lid is intended to be opened and closed frequently during use and, for this reason, the second seal must be robust enough to withstand such use without damage, wear or otherwise losing its insect-tightness.
  • the lead-in structure on the second groove comprises lead-in flanges. These may be arranged as perpendicular buttresses to the second groove that reinforce the second groove against sideways distortion. It will be understood that a defined position of the second groove may be important during closing of the lid to ensure correct entry of the second rim. Misalignment of these structures may cause damage to either the second rim or the second groove, making subsequent closure more difficult and impeding the insect-tight seal.
  • the lead-in flanges may be present around the circumference of the second groove, preferably on both sides thereof. They may be present at intervals of less than 20 mm, preferably less than 15 mm and in the corner regions may even be more closely spaced. By providing support to the second groove, the walls of the second groove may be made more flexible, thereby better accommodating the second rim. To fulfil their lead-in function, the lead-in flanges may extend downwards to beyond the lowest extent of the second groove and be angled or curved smoothly towards this groove.
  • the first seal between the upper frame and the lower frame is generally intended to be assembled once and thereafter not to require resealing. Nevertheless, joining of these components may take place in an automated procedure and subsequent to manufacture and stress-relaxation of the respective components. For this reason, the first groove may also be provided with similar lead-in flanges at least at its outer periphery. This can assist in self centering the upper frame and lower frame during assembly.
  • the upper frame may have an external circumferential skirt and the lid may have an exterior surface, with the exterior surface and skirt being co-planar in the closed position of the lid.
  • co-planar is not intended to be limited to flat planes and may also include a curved plane.
  • the lid and upper frame may form a smooth transition without discontinuities.
  • the upper frame has an external circumferential skirt and the lower frame has a peripheral surface, the peripheral surface and skirt being co-planar when the upper frame and lower frame are connected together. As above, this allows a smooth transition between the upper frame and the lower frame.
  • the lid may be manufactured as a separate item to the upper rim and may be removable therefrom.
  • the lid is pivotally connected to the upper frame.
  • the lid may be arranged to pivot about a hinge that is located radially inwardly from an external periphery of the upper frame.
  • Prior designs have used hinge structures that allow a lid to pivot with respect to a rim at a position radially outwards from an external periphery of the rim. Such a protruding hinge structure may interfere with stacking and can be unsightly in the final product.
  • the downward extending second groove of the lid may have a circumferential inner wall and a circumferential outer wall, wherein the circumferential outer wall extends downwards a distance greater than the circumferential inner wall in a region adjacent to the hinge.
  • the inner wall may thus not be uniform in height around its full circumference and may curve gradually downwards from either end of the container towards the middle of the rear side of the container.
  • the second rim may also be devoid of lead-in flanges in this regions, which may extend all along the hinge side of the lid.
  • the inner and outer walls are better able to flex as the second rim enters the second groove.
  • this is the portion of the second rim that first engages with the second groove and it does so at a relatively large angle.
  • the circumferential second seal commences engagement when the lid is at an angle of about 20° to the upper frame. Engagement of the second rim into the second groove continues progressively as the lid closes. This gradual engagement of the second seal and the frictional engagement between the inner wall and the second rim provides the user with tactile feedback of the sealing action, which is quite different from snap-fit type seals which only provide feedback at the final point of snapping engagement.
  • the upper frame may be formed of a material having a different hardness to that of the lower frame or the lid.
  • the upper frame is formed of a first plastic material that is relatively softer than a second plastic material used for the other two components.
  • a relatively harder material for the lower frame and lid can ensure a greater overall stiffness of the lid structure.
  • the upper frame may be slightly harder.
  • all three components may be of different hardness. The variations in hardness may be slight and may be just sufficient to ensure good interference sealing between the respective seals.
  • Preferred materials for the lid and upper and lower frames are polypropylene (PP), polyethylene (PE) and polyethylene terephthalate (PET) or combinations thereof, although the skilled person will be familiar with various alternatives which could provide similar engineering properties
  • the lid and the upper or lower frame may be provided with appropriate catches and closure elements. They may also be provided with a tamper evident closure indication.
  • the lower frame or upper frame may also be provided with a scoop holder and levelling portions. These may extend inwards into the access opening. It will be understood that a scoop holder may also be provided in the lid.
  • the invention further relates to a package comprising a lid structure as described above applied to a container having a peripheral wall extending to an upper edge and defining a product containing space, the lower frame being connected to the upper edge of the container.
  • the package may have a generally square or rectangular outer profile with rounded corners.
  • the volume of the package may be between 0.5 litre and 3 litres, preferably around 1.5 litres and the access opening preferably has a minimum dimension of at least 70 mm, more preferably around 100 mm and an area of at least 100 cm 2 .
  • the package comprises a membrane seal for sealing the product containing space prior to use.
  • the membrane seal may comprise a metal or plastics-metal foil or may be a plastics-only foil.
  • the membrane seal is a gas-tight seal.
  • a gas-tight seal is a seal that substantially prevents passage of gas into or out of the container during prolonged periods of storage.
  • it is an oxygen barrier seal, preventing diffusion of oxygen into the sealed container.
  • the oxygen permeability of the seal may preferably be less than 2.0 cm 3 /m 2 /day and more preferably may be less than 0.5 cm 3 /m 2 /day.
  • the membrane seal may be removed in its entirety prior to use or may comprises a weakened tear line defining an opening region, and a pull tab.
  • the membrane seal may be provided at various locations but most preferably, the membrane is sealed across the upper edge of the container.
  • thermoformed tubs generally have an outwardly extending flange forming the upper edge and the membrane may be sealed across the flange.
  • the membrane may be sealed to the lower frame to close the opening. In that case, the skilled person will understand that the connection between the lower frame and the upper edge of the container must be a gas-tight sealed connection.
  • the container is or comprises a thin-walled thermoformed tub having a wall thickness of less than 0.5 mm.
  • a thin walled thermoformed tub By the use of a thin walled thermoformed tub, the amount of material required for forming the body of the container is limited.
  • the lower frame of relatively thicker plastic material provides the required support to the relatively thin material of the peripheral wall, allowing effective connection to the upper frame.
  • relatively thin is understood by the skilled person to be with respect to the frame material.
  • the tub may be manufactured to have a wall thickness that is adequate to provide the barrier properties and strength required.
  • the thickness of the wall may be between about 0.10 mm to 0.60 mm, preferably between 0.2 and 0.40 mm.
  • the wall thickness may vary over the cross-section, being generally thicker at the rim and thinnest at side walls.
  • the values given above for the thickness of the wall are intended to designate the thickness of the side walls, which is usually the point of minimum thickness.
  • the lower frame may be significantly thicker, measured at its smallest dimension and may have a thickness sufficient to ensure a secure mechanical connection with the upper frame.
  • the tub may be manufactured of any appropriate material capable of being thermoformed. A most suitable material is polypropylene. However, other polymer materials such as polyethylene terephthalate (PET) or polyethylene (PE) can be used as well. Multi layer materials may also be used, subject to the requirements of recycling.
  • the lower frame may be permanently connected to the upper edge of the container, preferably by welding.
  • the package consists of a single material class for the purposes of recycling.
  • This includes the tub, the upper and lower frames and the lid.
  • the membrane seal may be of the same material although, given that it is removed on opening, it may also be recycled separately.
  • the container may further comprise a carton sleeve enveloping and supporting the thermoformed tub.
  • the carton sleeve may fit closely to the tub with an interference fit and may provide the necessary strength to the peripheral wall in order to be form stable.
  • the thin plastic material of the peripheral wall may have insufficient strength alone to adequately maintain the shape of the tub e.g. when stacking containers on each other. By combining this with a carton sleeve, improved strength may be achieved.
  • the respective layers may be separated for recycling.
  • the sleeve may comprise carton of 50 to 400 g/m 2 , preferably 100 to 300 g/m 2 .
  • the sleeve may be open at the bottom but preferably extends under the base of the tub.
  • the package may have a generally square or rectangular outer profile with rounded corners.
  • the volume of the package may be between 0.5 litre and 3 litres, preferably around 1.5 litres and the access opening preferably has a minimum dimension of at least 70 mm more preferably around 100 mm and an area of at least 100 cm 2 .
  • the overall length of the package may be between 150 mm and 250 mm, preferably about 185 mm.
  • the width of the package may be between 100 mm and 150 mm, preferably around 120 mm.
  • the package may be available in multiple heights according to volume required, varying from 80 mm to 150 mm.
  • the package as described is particularly suitable for containing a quantity of powdered nutritional product which can be effectively sealed within the product containing space.
  • the powdered nutritional product comprises infant milk formula.
  • a scoop is provided within the package and may be located above the membrane seal prior to use. It is also conceivable that a scoop is integrally formed with the lid construction and separated at first use.
  • Figure 1 shows a partially exploded view of a package 1 having a lid structure 3 according to a first embodiment of the invention.
  • the package 1 comprises a container in the form of a tub 2, a sleeve 4 and a membrane seal 6 and the lid structure 3 includes a lower frame 8, an upper frame 10 and a lid 12.
  • the tub 2 is thermoformed of relatively thin polypropylene material and has a base 14 and a peripheral wall 16 defining a product containing space 20.
  • the peripheral wall 16 extends to an upper edge 18 having an outwardly directed flange 19.
  • the sleeve 4 is formed of carton and has wall 22 and a bottom 24.
  • Lower frame 8 is an annular ring having an upstanding first sealing rim 48 surrounding an opening 26 of a similar dimension to the product containing space 20. Between the first rim 48 and the opening 26 are located detent openings 46, the function of which will be further explained below.
  • the upper frame 10 is also in the form of a ring and is provided with barbs 40 extending downwardly.
  • the lower frame 8 and upper frame 10 are also made of polypropylene although it will be understood that other appropriate materials could be employed.
  • the membrane 6 includes a tear line 28 defining an opening region 30 and includes a pull tab 32.
  • Figure 2 shows a perspective view of the package 1 of Figure 1 in the assembled state with the lid 12 closed.
  • a catch 36 on the front edge of the lid 12 engages with a rib 38 on the upper frame 10 to maintain the lid 12 closed.
  • the lid 12 and upper rim 10 are also made of polypropylene.
  • Figure 3 shows a perspective view of the package 1 of Figure 1 in the assembled state with the lid 12 open and the membrane removed to provide access to the product containing space 20.
  • a scoop 42 is held within the lid 12 by clips 44 and can also be positioned in a scoop holder 50 integrally formed with the lower frame 8. Also visible are hinges 11 allowing pivoting connection between the lid 12 and the upper frame 10.
  • FIG 4 is a perspective cross-section along line IV-IV of Figure 2 .
  • the membrane 6 is attached across the flange 19 of the tub 2 and sandwiched by the lower frame 8 which overlies the flange 19.
  • the flange 19, membrane 6 and lower frame 8 are all welded together to form a single relatively rigid rim structure.
  • Upper frame 10 is mechanically engaged with the lower frame 8 by the downwardly extending barbs 40 that engage through the detent openings 46 in the lower frame 8.
  • sleeve 4 closely engages against the peripheral wall 16 of tub 2, extending up to beneath the flange 19 to provide additional support. This allows the upper rim 10 to be snapped into the lower rim 8 without causing deformation or collapse of the tub 2.
  • the lid structure 3 is provided with two seals.
  • a circumferential first seal is formed by the upstanding first sealing rim 48 which engages with a downwardly extending first groove 54 on an underside of the upper frame 10.
  • a circumferential second seal is formed by an upstanding second sealing rim 56 on the upper side of the upper frame 10 which engages with a downwardly extending second groove 58 on the underside of the lid 12.
  • Lead-in webs 60, 62 are located on either side of the first groove 54 and second groove 58 respectively.
  • Figures 5a to 5c show cross-sections at the location of Figure 4 with the upper frame 10 in the process of being connected to the lower frame 8.
  • Figure 4a shows the upper frame 10 entering into initial engagement with the lower frame 8.
  • the lead-in webs 60 of the first groove 54 engage against the upstanding first rim 48 and guide it towards the first groove 54.
  • the barb 40 has entered into the detent opening 46.
  • the upper frame 10 has been pressed downwards onto the lower frame 8. This may be achieved by pressing on the lid 12.
  • the force F is applied against the upper frame 10 by the lead-in webs 62 of the lid 12. In this manner, additional pressure or deeper engagement of the second rim 56 into the second groove 58 is avoided.
  • the first rim 48 enters the first groove 54 and the barb 40 flexes into the detent opening 46.
  • Figure 5c shows the upper frame 10 fully engaged with the lower frame 8 and the barb 40 locked in the detent opening 46.
  • removal of the upper rim 10 is not possible without application of considerable force and breakage of the package.
  • the barbs 40 protrude into the interior of the tub 2 and cannot therefore be accessed from outside the package 1.
  • the first rim 48 has not bottomed out in the first groove 54. This ensures that due to manufacturing tolerances, the barb 40 will not be impeded from connecting.
  • the upper frame 10 has an external circumferential skirt 66 and the lid 12 has an exterior surface 64.
  • the exterior surface 64 and the skirt 66 are co-planar in the closed position of the lid 12.
  • both of the lid 12 and upper frame 10 have external surfaces that blend smoothly together at this location.
  • the lower frame 8 has a peripheral surface 68 and the peripheral surface 68 and skirt 66 are also co-planar when the upper frame 10 and lower frame 8 are connected together as shown in Figure 5c .
  • FIGs 6a to 6c show cross-sections in the direction VI-VI of Figure 3 with the lid 12 in various stages of closure onto the upper frame 10.
  • the lid 12 is in the open position supported by hinge 11.
  • the position of the hinge 11 is at a radially inwards position with respect to the skirt 66 of the upper frame 10. This means that when packages 1 are stacked adjacent to one another, the hinge 11 does not protrude outwards and impede close stacking. It is also less likely to be caught or snag accidentally.
  • there are no lead-in flanges 62 supporting the second groove 58 and an inner wall 58A is longer than an outer wall 58B of the second groove 58.
  • Figure 6b shows the lid 12 in a partially closed position with the upstanding second rim 56 engaging with the inner wall 58A of the second groove 58.
  • This contact occurs when the lid 12 is still at an angle of around 20° with respect to the upper frame 10.
  • the downward extent of the inner wall 58A beyond that of the outer wall 58B ensures that the second rim 56 is guided into the second groove 58.
  • the extended inner wall 58A acts as a lead-in structure and for this reason, no lead-in flanges 62 are required in this region.
  • the absence of lead-in flanges 62 allows the inner wall 58A to more easily flex as the angle between the lid 12 and the upper frame 10 changes.
  • the angular engagement on closing the lid 12 prevents the second rim 56 from entering into the second groove 58 in a linear manner.
  • the lead-in webs 62 on the lid 12 assist in guiding this angled entry, ensuring a progressive engagement of the second rim 56 into the second groove 58, starting from the rear edge of the lid 12 adjacent to the hinge 11 and progressing around the circumference to the front edge of the lid 12 adjacent to the catch 36.
  • the lead-in webs 62 also support the second groove 58 and help maintain its position. Because of the additional support provided by the lead-in webs 62, the structure forming the second groove 58 can be made more flexible allowing the closing action to be smoother. As discussed above, the manufacturing tolerances for the positions of these features is determined by the overall dimension of the opening 26.
  • Figure 6c shows the lid 12 in the closed position, with the upstanding second rim 56 engaged with the second groove 58.
  • the closed position of the lid 12 is defined by abutment of the lead-in webs 62 with the upper frame 10 and the exterior surface 64 engaging onto the skirt 66.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
EP20154110.9A 2014-06-05 2015-06-05 Lid structure for container Withdrawn EP3808674A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
PCT/NL2014/050359 WO2015187003A1 (en) 2014-06-05 2014-06-05 Lid structure for container
PCT/NL2015/050408 WO2015187020A1 (en) 2014-06-05 2015-06-05 Lid structure for container
EP15732067.2A EP3152123B1 (en) 2014-06-05 2015-06-05 Lid structure for container

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP15732067.2A Division EP3152123B1 (en) 2014-06-05 2015-06-05 Lid structure for container

Publications (1)

Publication Number Publication Date
EP3808674A1 true EP3808674A1 (en) 2021-04-21

Family

ID=50979853

Family Applications (2)

Application Number Title Priority Date Filing Date
EP20154110.9A Withdrawn EP3808674A1 (en) 2014-06-05 2015-06-05 Lid structure for container
EP15732067.2A Active EP3152123B1 (en) 2014-06-05 2015-06-05 Lid structure for container

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP15732067.2A Active EP3152123B1 (en) 2014-06-05 2015-06-05 Lid structure for container

Country Status (13)

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US (1) US20170101229A1 (da)
EP (2) EP3808674A1 (da)
CN (1) CN106458387B (da)
AU (1) AU2015268984B2 (da)
BR (1) BR112016028514B1 (da)
DE (1) DE202015009682U1 (da)
DK (1) DK3152123T3 (da)
ES (1) ES2785220T3 (da)
MY (1) MY181991A (da)
PH (1) PH12016502400A1 (da)
PL (1) PL3152123T3 (da)
RU (1) RU2673619C2 (da)
WO (2) WO2015187003A1 (da)

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USD937678S1 (en) 2018-02-19 2021-12-07 Target Brands, Inc. Container cover
GB201802943D0 (en) * 2018-02-23 2018-04-11 Mead Johnson Nutrition Co Improved flip top plastic lid
EP3617000B1 (en) * 2018-08-31 2020-10-21 Thule Sweden AB Cargo carrier
EP3766792A4 (en) * 2018-11-15 2021-10-13 Lg Chem, Ltd. HOOK COUPLING STRUCTURE AND BATTERY PACK BOX USING THE SAME
CN110040355A (zh) * 2019-05-13 2019-07-23 苏州优力弗生物科技有限公司 粉状食品桶
US11975894B2 (en) * 2020-01-13 2024-05-07 Inline Plastics Corp. Container covers and methods of using the same
US11738914B2 (en) 2021-11-18 2023-08-29 Yeti Coolers, Llc Container and latching system

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US5975346A (en) 1993-12-06 1999-11-02 The Sherwin-Williams Company Container for paints and similar materials
EP0716986A1 (en) * 1994-12-13 1996-06-19 Marcello Fossi Arrangement for temporary reclosure of containers in particular for foodstuff
US20080041861A1 (en) 2004-02-05 2008-02-21 N.V. Nutricia Packaging for Pulverulent Material
WO2008083141A2 (en) 2006-12-27 2008-07-10 Abbott Laboratories Container
WO2010040965A1 (fr) * 2008-10-10 2010-04-15 Compagnie Gervais Danone Emballage alimentaire avec couvercle de fermeture.
WO2010053952A2 (en) * 2008-11-04 2010-05-14 J. L. Clark, Inc. Container having snap-on metal lid to plastic hinge, and container including trash receptacle
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Also Published As

Publication number Publication date
PL3152123T3 (pl) 2020-06-29
RU2016152156A3 (da) 2018-09-18
BR112016028514B1 (pt) 2021-11-03
DK3152123T3 (da) 2020-04-27
US20170101229A1 (en) 2017-04-13
RU2673619C2 (ru) 2018-11-28
NZ727148A (en) 2022-03-25
WO2015187003A1 (en) 2015-12-10
MY181991A (en) 2021-01-18
BR112016028514A2 (pt) 2017-08-22
ES2785220T3 (es) 2020-10-06
WO2015187020A1 (en) 2015-12-10
AU2015268984B2 (en) 2020-03-12
RU2016152156A (ru) 2018-07-09
EP3152123A1 (en) 2017-04-12
AU2015268984A1 (en) 2016-12-22
CN106458387B (zh) 2020-07-14
DE202015009682U1 (de) 2019-02-21
CN106458387A (zh) 2017-02-22
PH12016502400A1 (en) 2017-03-06
EP3152123B1 (en) 2020-01-29

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