US20170305615A1 - Tamper Evident Lid and Method of Making Same - Google Patents

Tamper Evident Lid and Method of Making Same Download PDF

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Publication number
US20170305615A1
US20170305615A1 US15/516,693 US201415516693A US2017305615A1 US 20170305615 A1 US20170305615 A1 US 20170305615A1 US 201415516693 A US201415516693 A US 201415516693A US 2017305615 A1 US2017305615 A1 US 2017305615A1
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United States
Prior art keywords
band portion
peripheral margin
cylindrical band
container
teeth
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.)
Abandoned
Application number
US15/516,693
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English (en)
Inventor
Stephen Hugh Witt
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.)
Stanpac Inc
Original Assignee
Stanpac Inc
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Publication date
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Priority to US15/516,693 priority Critical patent/US20170305615A1/en
Assigned to STANPAC INC. reassignment STANPAC INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WITT, STEPHEN HUGH
Assigned to PNC BANK CANADA BRANCH, AS AGENT reassignment PNC BANK CANADA BRANCH, AS AGENT SECURITY AGREEMENT Assignors: STANPAC INC.
Publication of US20170305615A1 publication Critical patent/US20170305615A1/en
Abandoned 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
    • B65D43/0235—Removable lids or covers with integral tamper element
    • B65D43/0237—Removable lids or covers with integral tamper element secured by snapping over beads or projections before removal of the tamper element
    • B65D43/0256—Removable lids or covers with integral tamper element secured by snapping over beads or projections before removal of the tamper element only on the outside, or a part turned to the outside, of the mouth of the container
    • B65D43/0262—Removable lids or covers with integral tamper element secured by snapping over beads or projections before removal of the tamper element only on the outside, or a part turned to the outside, of the mouth of the container leaving only an outside friction after removal of the tamper element
    • 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
    • B65D2543/00074—Shape of the outer periphery curved
    • B65D2543/00092—Shape of the outer periphery curved circular
    • 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
    • B65D2543/0024—Overall construction of the lid made of several pieces two pieces, one forming at least the whole skirt, the other forming at least the whole upper part
    • 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
    • B65D2543/00268—Paper
    • 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
    • B65D2543/00018—Overall construction of the lid
    • B65D2543/00259—Materials used
    • B65D2543/00314—Combination, e.g. laminates, several different 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
    • 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
    • B65D2543/00527—NO contact
    • 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
    • B65D2543/00592—Snapping means
    • B65D2543/00601—Snapping means on the container
    • B65D2543/00611—Profiles
    • B65D2543/00638—Rolled edge
    • 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
    • B65D2543/00759—Flange or lip
    • 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
    • B65D2543/00805—Segments
    • 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
    • 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
    • B65D85/78—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 for ice-cream

Definitions

  • the invention relates generally to lids for containers and particularly to tamper-resistant, tamper-evident lids for containers for products that present significant concerns for the consumer about unauthorized tampering with the product (e.g. food products and other consumables).
  • 7,703,626 (to the present inventor Witt) describes the pre-assembly heating of the closure components with directed hot air to partially melt the thermoplastic surfaces and allow the parts to be immediately assembled sealingly, and describes a paperboard composite closure in which the plastic rim is of a two-piece snap-fit construction where the paperboard is compressed between first and second annular flanges of the two-piece plastic rim.
  • a lid that can be used to resist and make readily detectable tampering of the products at the point of sale.
  • Particular examples include dairy products, cosmetics, granular or powdered food products such as tubs for bread crumbs, hardware product tubs for screws, nuts and bolts, and so on.
  • a tamper-resistant tamper-evident container closure is provided for ice cream, dairy and other food products that are commercially practical and provides the level of tamper evidence needed for food safety.
  • a tamper resistant push-on closure member for a container having an opening with a peripheral lip formation comprising: a top cylindrical band portion having an upper peripheral margin and a lower peripheral margin, the top cylindrical band portion having a plurality of continuous annular ridges extending inwardly along the circumference of its inner surface for contacting the side surface of the container; a bottom cylindrical band portion having an upper peripheral margin and a lower peripheral margin; the bottom cylindrical band portion being circumscribed by a rupturable line of weakness vertically below the lower peripheral margin of the top cylindrical portion; a plurality of rigid teeth extending from the lower peripheral margin of the bottom cylindrical band portion in an upward and inward direction for locking engagement against the lip of the container when the closure member is in place; and a top cover portion formed from generally flexible sheet material, peripherally sealed to an annular ledge on the upper peripheral margin of the top cylindrical band portion.
  • a closure member where the top of the plurality of rigid teeth are connected to the lower peripheral margin of the top cylindrical band portion by a plurality of projections for providing a visual tamper evident indication and for increasing the force of engagement of the plurality of teeth against the lip of the container.
  • a closure member having a plurality of tooth channels positioned between the lower peripheral margin of the top cylindrical band portion and the upper peripheral margin of the bottom cylindrical band portion for facilitating the flow of plastic resin during the production of the plurality of rigid teeth.
  • a closure member where the bottom of the plurality of teeth are connected to the lower peripheral margin of the bottom cylindrical band portion by a plurality of inner projections for increasing the rigidity of the plurality of teeth and for increasing the force of engagement of the plurality of teeth against the lip of the container.
  • a composite tamper resistant push-on closure member for a container having an opening with a peripheral outwardly extending lip formation comprising: a top cover; a cylindrical closure, the cylindrical closure comprising: a top cylindrical band portion having an upper peripheral margin extending from the top cover portion, and a lower peripheral margin; a bottom cylindrical band portion having an upper peripheral margin and a lower peripheral margin; a rupturable line of weakness between the lower peripheral margin of the top cylindrical band portion and the upper peripheral margin of the bottom cylindrical band portion; and a plurality of rigid teeth extending from the lower peripheral margin of the bottom cylindrical band portion in an upward and inward direction for locking engagement against the lip of the container when the closure member is in place; the top cylindrical band portion having an annular recess along the inner circumference of the upper peripheral margin for receiving and securing a peripheral margin of the top cover.
  • FIG. 1 is a plan view of the top of the example closure of FIG. 1 ;
  • FIG. 2 is a cross-sectional view of the example closure of FIG. 1 , across line A-A of FIG. 1 ;
  • FIG. 3 is a cross-sectional portion view of the example closure of FIG. 1 ;
  • FIG. 4A is a perspective view of the example closure of FIG. 1 with a container
  • FIG. 4B is a perspective view of the example closure of FIG. 1 attached to a container;
  • FIG. 5 is a outer side view of the example closure of FIG. 1 ;
  • FIG. 6A is a cross-sectional view of the example closure of FIG. 1 with a container
  • FIG. 6B is a cross-sectional portion view of the example closure of FIG. 1 with a container;
  • FIG. 7A is a cross-sectional view of the example closure of FIG. 1 attached to a container.
  • FIG. 7B is a cross-sectional portion view of the example closure of FIG. 1 attached to a container.
  • FIG. 1 shows an example closure 10 in accordance with the present disclosure.
  • the closure 10 is a snap-on closure such as a lid, and may be suitable for use to close an opening of a food container such as a plastic or paperboard container (e.g., an ice cream container).
  • the closure 10 may be manufactured using a one-piece molding process, as described further below.
  • the closure 10 may include a top cover portion 20 , a top cylindrical band portion 30 with upper and lower margins 30 a and 30 b, respectively, and a bottom cylindrical band portion 40 with upper and lower peripheral margins 40 a and 40 b, respectively.
  • the top cylindrical band portion 30 and the bottom cylindrical band portion 40 are integrally formed and connected, and these portions 30 , 40 as a single unit may be referred to in the application as the cylindrical closure portion 15 .
  • the top cylindrical band portion 30 and the bottom cylindrical band portion 40 are connected by a line of weakness 50 as described below.
  • the top cylindrical band portion 30 has a circumferential projection 34 that is recessed from the outer side of the top cylindrical band portion 30 and extends upwardly and inwardly.
  • the bottom of the projection 34 provides an annular ledge 18 .
  • the top cover panel 20 may consist of a paper disk or the like that may be printed on its upper side for product identification, marketing information, graphics etc. Particularly for use with ice-cream and food products, the cover panel 20 will have a polymer layer attached to the underside for keeping moisture from the product from entering through the paper. In the embodiment illustrated in FIGS. 3, 6A, 6B, 7A and 7B , the top cover panel 20 is continuous with the annular ledge 18 .
  • the bottom cylindrical band portion 40 has a plurality of circumferentially spaced tamper evident tooth system 70 (may also be referred to herein as tamper resistant teeth). Extending upwardly and inwardly from the lower peripheral margin 40 b of the bottom cylindrical band 40 at the plurality of tamper evident tooth system 70 are a plurality of circumferentially spaced teeth 60 .
  • the plurality of teeth 60 lock under the rim of the container when the closure 10 is first pushed downwardly to seal the container.
  • the plurality of teeth 60 act as a tamper resistant mechanism on the closure 10 .
  • the plurality of teeth 60 may include notches 64 , 66 located at the right and left sides of a top edge 62 of the teeth 60 .
  • the notches 64 , 66 may further facilitate the locking engagement of the plurality of teeth 60 of the rim of the container.
  • each tamper evident tooth system 70 between the plurality of teeth 60 and the lower peripheral edge 30 b of the top cylindrical band portion 30 is an open space.
  • Each tamper evident tooth system 70 further has a plurality of projections 72 that connect the plurality of teeth 60 to the bottom peripheral area 30 b of the top cylindrical band portion 30 .
  • the plurality of projections 72 may be seen when viewing the outer side of the closure 10 , providing an effective means for determining if the closure 10 has been tampered with. Additionally, the plurality of projections 72 may function to increase the force of engagement of the plurality of teeth 60 against the lip of the container.
  • each tamper evident tooth system 70 there are two or more projections 76 that are connected to the bottom of the plurality of teeth 60 to the lower peripheral margin 40 b of the bottom cylindrical band portion 40 .
  • the projections 76 may provide additional rigidity to the plurality of teeth 60 and also may assist in increasing the force of engagement of the plurality of teeth 60 against the lip of the container.
  • the upper peripheral margin 40 a of the bottom cylindrical band portion 40 is thinned and weakened.
  • the line of weakness 50 includes one or more of a circumferential notch 52 , the plurality of projections 72 , and open spaces that are viewable from the outer side of the bottom cylindrical band portion 40 .
  • Legitimate opening of the container by a consumer starts by separating the top cylindrical band portion 30 from the bottom cylindrical band portion 40 by tearing away the bottom cylindrical band portion 40 along the line of weakness 50 .
  • the bottom cylindrical band portion 40 is provided with a gripping means.
  • the bottom cylindrical band 40 is formed with an accessible edge portion 45 disposed at a location along the outwardly facing surface.
  • the accessible edge portion 45 may include projections or ridges on its outer surface that assist a user's ability to grip and hold the portion 45 .
  • the bottom cylindrical band portion 40 below the line of weakness 50 can be removed with the plurality of teeth 60 as a tear-away strip. That is, the line of weakness 50 is ruptured and the bottom cylindrical band portion 40 having the plurality of teeth 60 is easily removed from the closure 10 and from the container (not shown).
  • the closure 10 has a multi-snap closing.
  • the inner surface 32 of the top cylindrical band portion 30 may have a plurality of continuous annular ridges 38 extending inwardly along the circumference of the inner surface 32 .
  • the plurality of continuous annular ridges 38 provide multiple contact points against a paperboard or cardboard rim 102 of a container 100 .
  • the plurality of continuous annular ridges 38 provide multiple places to contact the paperboard rim 102 , thereby improving the seal of the closure 10 on the container 100 .
  • the plurality of continuous annular ridges 38 provide an improved mechanism for resealing the container 100 .
  • the top cylindrical band 30 and the bottom cylindrical band 40 of the closure 10 may be manufactured by a one-piece molding process, such as injection-molding, using a single mold. This one-step process may help to simplify manufacturing and/or reduce manufacturing costs.
  • the closure 10 may be molded using any suitable polymer, for example any suitable food-grade plastic when used as a closure for a food container (e.g., used as a lid on a yogurt or ice cream container).
  • the cover panel 20 may be made of the same plastic material as the top cylindrical band portion 30 and the bottom cylindrical band portion 40 .
  • the cover panel 20 , the top cylindrical portion 30 and the bottom cylindrical portion 40 may be manufactured by a one-piece molding process, such as injection-molding, using a single mold.
  • the closure 10 of the present application has specific elements that facilitate the molding process. As shown in FIGS. 1 and 2 , the closure 10 has one or more openings or gates 80 located on the upper peripheral portion 30 a of the top cylindrical band portion 30 .
  • the gates 80 act as an opening for the plastic resin to enter a mold and fill the mold cavity.
  • the upper peripheral portion 40 a of the bottom cylindrical band portion 40 has multiple tooth channels that allow the plastic to flow into the tamper evident tooth system 70 .
  • the tamper evident tooth system 70 includes the plurality of teeth 60 that is formed on the bottom cylindrical band 40 and the plurality of projections 72 .
  • the plurality of projections 72 define and/or delineate the tooth channels in the corresponding mold.
  • the tooth channels improve the process of filling the mold cavity and also increases the speed by which the tamper evident tooth system 70 that includes the plurality of teeth 60 and the projections 72 are formed.
  • the tooth channels reduce the amount of defects in the tamper evident tooth system 70 .
  • the tooth channels further facilitate the creation of larger and thicker tamper resistant bands than conventional solutions, thereby increasing the rigidity of the plurality of teeth 60 .
  • the tamper evident tooth system 70 has edges 64 , 66 that slope inwardly.
  • the cover panel 20 is inserted into the mold.
  • the mold is filled with resin by injection.
  • the resin covers the edge of the paper cover panel 20 , creating the lid.
  • the mold then collapses at the edges of the tamper evident tooth system 70 to facilitate and the ejection of the part from the mold.
  • FIG. 4A illustrates the closure 10 with a container 100
  • FIG. 4B illustrates the closure 10 attached to the container 100
  • the disc is inserted into the mold and then plastic resin is molded around the top and bottom to hold it in place.
  • a coating of suitable adhesive may be applied to either of the outer edge of the facing surfaces prior to insertion of cover panel 20 onto the annular ledge 18 located on the bottom of the projection 34 .
  • heating, ultrasonic welding, or spin welding may be used.
  • the cover panel 20 is secured to the top cylindrical band 30 , by the interference fit in recess 19 .
  • the cover panel 20 is secured to the cylindrical closure portion 15 prior to attaching the closure 10 to the container 100 ( FIG. 4B ).
  • the closure 10 is attached to the container 100 by applying a downward force to the top to the closure 10 onto the top of the container 100 .
  • the plurality of teeth 60 of the closure 10 lock under the rim of the container when the closure 10 is pushed downwardly to seal the container.
  • FIGS. 6A and 6B illustrate an embodiment for incorporating the cover panel 20 into the cylindrical closure portion 15 .
  • the cover portion 20 may be positioned above the container 100 .
  • the cover portion 20 may be placed to sit and rest on the circumferential paperboard rim 102 of the container 100 .
  • the cylindrical closure portion 15 is positioned above the cover portion 20 .
  • the container 100 would contain a material or food product to be sealed.
  • the cylindrical closure portion 15 snaps onto the paperboard rim 102 and in this process, the cover portion 20 is secured to the cylindrical closure portion 15 .
  • the cover portion 20 is pushed into position in the upper cyclindrical band portion 30 and is secured within an annular recess 19 located along the inner circumference of the upper peripheral margin 30 a of the top cylindrical band portion 30 .
  • the cover portion 20 may also have an adhesive applied to its top circumference to further secure the cover portion 20 to annular ledge 18 of the top cylindrical band portion 30 .
  • the plurality of teeth 60 lock under the rim of the container when the closure 10 pushed downwardly to seal the container.
  • the plurality of continuous annular ridges 38 provide multiple contact points against the paperboard rim 102 of a container 100 , providing an improved interference fit. This improves the seal of the closure 10 on the container 100 .
  • the plurality of continuous annular ridges 38 provide an improved mechanism for resealing the container 100 .
  • the lid is circular. In other embodiments, it is rectangular, oval, square, or other shapes.
  • a solid resilient band might be used on the tear-away strip portion of the closure instead of individual tamper-evident teeth.
  • a solid resilient band might be used, according to the final intended application.
  • the inside wall of the top cylindrical band could be formed with threads to adapt the closure for use on a threaded container.
US15/516,693 2014-10-07 2014-12-12 Tamper Evident Lid and Method of Making Same Abandoned US20170305615A1 (en)

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US201462060730P 2014-10-07 2014-10-07
US15/516,693 US20170305615A1 (en) 2014-10-07 2014-12-12 Tamper Evident Lid and Method of Making Same
PCT/CA2014/051209 WO2016054720A1 (en) 2014-10-07 2014-12-12 Tamper evident lid and method of making same

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EP (1) EP3204307B1 (es)
AU (2) AU2014408671B2 (es)
BR (1) BR112017006979B1 (es)
CA (1) CA2963825C (es)
CL (1) CL2017000376A1 (es)
CO (1) CO2017003463A2 (es)
CR (1) CR20170126A (es)
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CN110979890A (zh) * 2019-12-19 2020-04-10 瑞安市贝斯特机械有限公司 防盗纸盖及防盗纸杯
USD891175S1 (en) * 2014-10-20 2020-07-28 N2 Packaging Systems, Llc Child resistant lid for beverage container
US20220087217A1 (en) * 2020-09-21 2022-03-24 Brandon D. Pierce Portable pet travel cup with prefilled water and sealable lid
US11834237B2 (en) 2017-06-07 2023-12-05 N2 Packaging Systems, Llc Child resistant double seam container lid adapter ring
US11858701B2 (en) 2016-06-08 2024-01-02 N2 Packaging Systems, Llc Child resistant and senior friendly can lid
US11958666B2 (en) 2017-06-07 2024-04-16 N2 Packaging Systems, Llc Child resistant double seam container lid

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WO2021237300A1 (en) * 2020-05-28 2021-12-02 Zipform Packaging Pty Ltd Container and seal assembly

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US4732289A (en) * 1985-07-31 1988-03-22 Aci Australia Limited Tamper indicating closure member for container
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD891175S1 (en) * 2014-10-20 2020-07-28 N2 Packaging Systems, Llc Child resistant lid for beverage container
US11858701B2 (en) 2016-06-08 2024-01-02 N2 Packaging Systems, Llc Child resistant and senior friendly can lid
US11834237B2 (en) 2017-06-07 2023-12-05 N2 Packaging Systems, Llc Child resistant double seam container lid adapter ring
US11958666B2 (en) 2017-06-07 2024-04-16 N2 Packaging Systems, Llc Child resistant double seam container lid
CN110979890A (zh) * 2019-12-19 2020-04-10 瑞安市贝斯特机械有限公司 防盗纸盖及防盗纸杯
US20220087217A1 (en) * 2020-09-21 2022-03-24 Brandon D. Pierce Portable pet travel cup with prefilled water and sealable lid

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ES2900854T3 (es) 2022-03-18
AU2017232086A1 (en) 2017-10-12
CL2017000376A1 (es) 2017-11-03
BR112017006979A2 (pt) 2018-01-09
EP3204307A4 (en) 2018-09-12
WO2016054720A1 (en) 2016-04-14
AU2017232086B2 (en) 2018-09-27
AU2014408671A1 (en) 2017-05-25
CA2963825A1 (en) 2016-04-14
DK3204307T3 (da) 2022-01-03
MX2017004377A (es) 2017-06-22
CO2017003463A2 (es) 2017-06-30
BR112017006979B1 (pt) 2022-10-18
EP3204307A1 (en) 2017-08-16
AU2014408671B2 (en) 2017-11-02
EP3204307B1 (en) 2021-09-22
CA2963825C (en) 2018-08-21
PE20170614A1 (es) 2017-05-24

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