The present disclosure relates to a package, and particularly to a package including a closure for mounting on a brim of a container. More particularly, the present disclosure relates to a reclosable closure provided with a membrane sheet that mates with a container brim when the closure is mounted on the container brim.
A package in accordance with the present disclosure includes a closure adapted to mate with a brim of a closure to close a top opening that opens into an interior product-storage region formed in the container. In illustrative embodiments, the closure includes a sheet-support ring adapted to be mated with and mounted on the container brim and a thin membrane sheet bonded permanently to the sheet-support ring and arranged to cover the top opening formed in the container when the sheet-support ring is mounted on the container brim.
In illustrative embodiments, a portion of the thin membrane sheet that is not bonded permanently to the sheet-support ring of the closure is bonded temporarily to a ring-shaped temporary sheet-bonding zone provided along an inner perimeter edge of the container brim at a factory using any suitable means to establish an endless hermetic seal between the closure and the container that extends along the container brim around the top opening formed in the container. While this temporary bond between the membrane sheet of the closure and the brim of the container is broken to break the hermetic seal the first time a consumer removes the closure from the container, the permanent bond established between the sheet-support ring and the membrane sheet is not broken. Therefore, the closure comprising the ring and sheet remains intact and unbroken when the membrane sheet is peeled away from the temporary sheet-bonding zone provided on the container brim the first time a consumer removes the closure from the container brim to open the package. After such a first removal, the closure can be re-mounted on the container brim repeatedly using, for example, a snap-fit connector included in the sheet-support ring to close the package but without establishing any subsequent hermetic seal between the closure and the container.
In illustrative embodiments, the sheet-support ring of the closure includes a central brim-mount platform adapted to overlie and set on a ring-support zone that is provided along an outer perimeter edge of the container brim and is arranged to surround the ring-shaped temporary sheet-bonding zone provided along the inner perimeter edge of the container brim when the closure is coupled to the container brim. The membrane sheet is coupled to the sheet-support ring and to the brim at a factory. A ring-shaped outer portion of the membrane sheet is bonded permanently to a permanent sheet-bonding zone provided on an endless upwardly facing top surface of the sheet-support ring. A ring-shaped middle portion of the membrane sheet is bonded temporarily to a temporary sheet-bonding zone provided on one section of an inner perimeter region of the top surface of the container brim. A central portion of the membrane sheet is arranged to cover a top opening into an interior product-storage region of the container and to be coupled to and surrounded by the ring-shaped middle portion of the membrane sheet. A radially outer portion of the central portion of the membrane sheet is arranged to overlie (without being bonded to) another inner section of the inner perimeter region of the top surface of the container brim.
In illustrative embodiments, the sheet-support ring further includes a sheet-separator lever arm that is coupled to one end of the brim-mount platform of the sheet-support ring for upward pivotable movement relative to the brim-mount platform about a fulcrum provided on a bend line during a closure-removal activity. The sheet-separator lever arm is configured to mate with the membrane sheet to provide leverage as the lever arm is pivoted upwardly from a horizontal initial position associated with a closed position of the closure on the container brim to an angled sheet-lifting position associated with initial peeling separation of the membrane sheet from temporary bonding with the ring-shaped temporary sheet-bonding zone provided along the inner perimeter edge of the container brim.
Additional features of the present disclosure will become apparent to those skilled in the art upon consideration of illustrative embodiments exemplifying the best mode of carrying out the disclosure as presently perceived.
The detailed description particularly refers to the accompanying figures in which:
A package 10 in accordance with the present disclosure includes a container 12 and a closure 14 mounted on container 12 as shown in
Membrane sheet 22 of closure 14 is also configured to mate temporarily with an endless inner perimeter region 18I of brim 18 in a temporary sheet-bonding zone 18Z2 to establish an endless hermetic seal between container 12 and closure 14 when sheet-support ring 24 is first mounted on container brim 18 at a package-filling factory to cause closure 14 to close an opening 16 formed in container 12 as suggested in
Sheet-support ring 24 of closure 14 includes a first pivotable sheet-separator lever arm 41, a second pivotable sheet-separator lever arm 42, and a central brim-mount platform 40 lying between interconnecting lever arms 41, 42 as shown, for example, in
First pivotable sheet-separator lever arm 41 is configured to be pivoted by a consumer about a fulcrum provided on a first bend line 41BL relative to a stationary central brim-mount platform 40 of sheet-support ring 24 as suggested in
Package 10 is configured to receive and store products such as food. Container 12 is formed to define interior product-storage region 15 as suggested in
Container 12 includes a bowl 17 and brim 18 as shown for example, in
Substantially flat membrane sheet 22 of closure 14 includes a central portion 22A, ring-shaped middle portion 22B surrounding central portion 22A, and a ring-shaped outer portion 22C surrounding ring-shaped middle portion 22B as shown, for example, in
Inner perimeter portion 18I includes ring-shaped first and second sections 18I1, 18I2 as shown, for example, in
A radially outer portion 22A′ of central portion 22A of membrane sheet 22 is not bonded to brim 18 in illustrative embodiments and sets on an unbonded zone 18Z1 provided on first inner section 18I1 of inner perimeter region 18I of container brim 18 as suggested in
Sheet-support ring 24 of closure 14 includes a central brim-mount platform 40, a first pivotable sheet-separator lever arm 41 coupled to a left end of brim-mount platform 40 for pivotable movement relative to brim-mount platform 40 about a fulcrum 41FL provided on first bend line 41BL, and a second pivotable sheet-separate lever arm 42 coupled to a right end of brim-mount platform 40 for pivotable movement relative to brim-mount platform 40 about a fulcrum 42FL provided on a second bend line 42BL that is arranged to lie in spaced-apart parallel relation to first bend line 41BL as suggested in
A snap-fit connector 24C is included in sheet-support ring 24 and coupled to a handgrip included in each of lever arms 41, 42. Snap-fit connector 24C is configured to provide closure retainer means for engaging a lip 18L included in brim 18 to retain sheet-support ring 24 in a mounted container-closing position on container brim 18 as suggested, for example, in
Central brim-mount platform 40 illustratively includes a curved first strip 401 arranged to mate with an underlying portion of outer region 18O of top surface 18T of container brim 18 and a separate curved second strip 402 arranged to lie in spaced-apart relation to curved first strip 401 and mate with an underlying portion of outer region 18O of top surface 18T of container brim 18 when closure 14 is mounted on container brim 18 as suggested in
First pivotable sheet-separator lever arm 41 includes a handgrip 405 and a first shelf 403 arranged to interconnect first ends of first and second curved strips 401, 402 and coupled to handgrip 405 as shown, for example, in
Second pivotable sheet-separator lever arm 42 includes a handgrip 406 and a second shelf 404 arranged to interconnect second ends of first and second curved strips 401, 402 and coupled to handgrip 406 as shown, for example, in
Package 10 includes a container 12 and a closure 14 adapted to mate with a brim 18 of container 12 to close a top opening 16 that opens into an interior product-storage region 15 formed in container 12 as suggested in
Sheet-support ring 24 includes a brim-mount platform 40 mated to perimeter side portions of outer portion 22C of membrane sheet 22 and adapted to overlie and set on a ring-support zone 18Z3 provided on outer region 18O of container brim 18 when closure 14 is coupled to container brim 18. Sheet-support ring 24 further includes a sheet-separator lever arm 41 that is coupled to brim-mount platform 40 for pivotable movement relative to brim-mount platform 40 about a fulcrum provided on a bend line 41BL caused by a consumer during a closure-removal activity from an initial position associated with a closed position of the closure on container brim as shown in
Sheet-separator lever arm 41 is arranged to extend outwardly away from container brim 18 and first bend line 41BL to cause a free end of lever arm 41 to lie at a first (pry) distance (X) from first bend line 41BL as suggested in
The first pivotable sheet-separator lever arm 41 provides a closure rim structure that can be pivoted about a fulcrum on a first bend line 41BL to create a mechanical advantage to apply an opening force to the sheet-lift point P1 of the peelable membrane sheet 22 of closure 14 to break the temporary bond between the peelable membrane sheet 22 and the first pivotable sheet-separator arm 41 at the peel-initiation section 22P 1 to facilitate closure removal during opening of package 10. Due to such mechanical leverage, the sheet-lifting force (F2) applied to the first peel-initiation section 22P1 of peelable membrane sheet 22 at the sheet-lift point P1 is greater than a pivot-inducing lifting force (F1) applied by a consumer to an underside of the free end 41F of the first pivotable sheet-separator lever arm 41 to cause upward pivoting movement of the first pivotable sheet-separator lever arm 41 about first bend line 41BL during a first step in a process of removing the hermetically sealed closure 14 from container brim 18 the first time package 10 is opened by a consumer. In the illustrated embodiment, the sheet-lifting force (F2) and the pivot-inducing load force (F1) are located on the same side of a fulcrum established on first bend line 41B as suggested in
Closure 14 is mounted on a brim 18 of the container 12 and is made of a substantially flat membrane sheet 22 bonded permanently to a permanent sheet-bonding zone 24Z on an upwardly facing top surface 24T of a sheet-support ring 24 as suggested in
Aligned side elevation and top views of package 10 are provided in
Membrane sheet 22 is made of a thin film and is adapted to be bonded permanently to a permanent sheet-bonding zone 24Z provided on an upwardly facing top surface 24T of the sheet-support ring 24 and to be bonded temporarily to a temporary sheet-bonding zone 18Z2 provided on an inner portion of an upwardly facing surface 18T of the container brim 18. The permanent sheet-bonding zone 24Z on a top surface 24T of the sheet-support ring 24 is shown, for example, in
The first pivotable sheet-separator lever 41 is in the original closed position as shown, for example, in
Container 12 includes a bowl 17 formed to include an interior product-storage region 15 and a brim 18 coupled to an upper portion of bowl 17. Brim 18 is arranged to border a top opening 16 into interior product-storage region 15 as suggested in
Closure 14 is configured to mount on brim 12 in a closed position to close the top opening 16 and block access to interior product-storage region 15 as suggested in
Membrane sheet 22 includes a ring-shaped outer portion 22C bonded permanently to sheet-support ring 24 to form an endless seal therebetween, a central portion 22A surrounded by the ring-shaped outer portion 22C and arranged to cover the top opening 16 into interior product-storage region 15 when closure 14 is positioned to lie in the closed position on brim 18, and a ring-shaped middle portion 22B arranged to interconnect an outer perimeter edge 22O of central portion 22A and an inner perimeter edge 221 of the ring-shaped outer portion 22C as suggested in
The endless inner perimeter region 18I of the endless upwardly facing top surface 18T also includes an unbonded zone 18Z1 arranged to lie in spaced-apart relation to the ring-support zone 18Z3 to locate the endless temporary sheet-bonding zone 18Z2 therebetween as suggested in
Sheet-support ring 24 includes a central brim-mount platform 40 and a first pivotable sheet-separator lever arm 41 as suggested in
Sheet-support ring 24 further includes a second pivotable sheet-separator lever arm 42 as suggested in
Central brim-mount platform 40 of sheet-support ring 24 includes two strips 401, 402 as suggested in
This application claims priority under 35 U.S.C. §119(e) to U.S. Provisional Application Ser. No. 61/930,076, filed Jan. 22, 2014, which is expressly incorporated by reference herein.
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