GB2542025A

GB2542025A - Closure

Info

Publication number: GB2542025A
Application number: GB1614915.5A
Authority: GB
Inventors: Spencer Tinsley Jamie; Hein John
Original assignee: Dubois Ltd
Current assignee: Dubois Ltd
Priority date: 2015-09-04
Filing date: 2016-09-02
Publication date: 2017-03-08
Also published as: WO2017037467A1; GB201515735D0; GB201614915D0

Abstract

A container comprising an aperture (106, fig. 1a) for dispensing sheet material and a closure 200 for the aperture. The closure comprises a base 202 arranged adjacent the aperture, a lid 204 hingedly connected to the base and configured to move between an open position and a closed position, and a latch for releasably securing the lid in the closed position. The closure further comprises a resilient element 266 located between the base and the lid and arranged to deform and store energy upon movement of the lid into the closed position, and to transfer stored energy to the lid upon the lid being de-latched from the closed position. The resilient element may comprise a first end (266a, fig. 3c) that is coupled to the base and a second free end (266b) distal the first end. In some claims two resilient elements are provided.

Description

Closure

FIELD OF THE INVENTION

The present invention relates to a closure for a container and to containers comprising such a closure.

BACKGROUND OF THE INVENTION

Closures that enable re-sealing of a container are known in the art. For example those that enable re-sealing of an aperture, such as those in the packaging of cleaning wipes or baby wipes. These closures are produced in a variety of shapes, sizes, and materials.

The simplest version of such a closure takes the form of a strip of plastics material coated with adhesive that is re-sealably mounted over a dispensing aperture in the packaging.

However, such closures can only be re-sealed a limited number of times, before the adhesive surface is lost and the closure is unusable.

More complex closures are also known in the art, having a variety of different configurations. Said closures commonly take the form of a hinged cover, having a latching mechanism to retain said cover over the dispensing aperture when not in use, offering a means of resealing the dispensing aperture on a more frequent basis. However, such closures are commonly not easy to open, or do not open to an extent that offers maximum convenience for the user. Otherwise, alternative closures are complex and therefore expensive to manufacture.

The present invention seeks to overcome or at least mitigate / alleviate one or more problems associated with the prior art.

SUMMARY OF THE INVENTION A first aspect of the invention provides a container comprising an aperture for dispensing sheet material and a closure for said aperture, said closure comprising: a base portion arranged adjacent the aperture, a lid portion hingedly connected to the base portion and configured to move between an open position and a closed position, and a latching mechanism for releasably securing the lid portion in the closed position; wherein the closure further comprises a resilient element located between the base portion and the lid portion, and wherein the resilient element is arranged and configured to deform and store energy upon movement of the lid portion into the closed position, and to transfer stored energy to the lid portion upon the lid portion being de-latched from the closed position.

When deformed, the resilient element stores potential energy. Upon the lid portion being moved from the closed position to the open position, said stored energy is transferred from the resilient element into movement of the lid portion. Advantageously, the lid portion is opened more easily for a user. Further, reduced contact between the user and the lid portion is possible which may advantageously reduce the risk of contamination should, for example, the container house a product for cleaning purposes.

In exemplary embodiments, the resilient element is configured to be elastically deformed when the lid portion is in the closed position. The energy required to deform the resilient element is transferred from the movement of the lid portion into the closed position. Said energy is then stored by the resilient element until it is desired to move the lid portion into the open position. Advantageously, this means that no other external source of energy is required to deform the resilient element other than that provided by moving the lid portion into the closed position.

In exemplary embodiments, the resilient element is in an un-stressed condition when the lid portion is in the open position. The resilient element being in an unstressed condition when the lid is in open position means that advantageously, the resilient element has a higher capacity to store energy under deformation as the lid portion is moved into the closed position. Subsequently, more energy can then be transferred back to movement of the lid portion once the lid portion is de-latched.

In exemplary embodiments, the lid portion is connected to the base portion by at least one hinge.

In exemplary embodiments, the at least one hinge is integrally formed with the lid portion and the base portion. Advantageously, this configuration simplifies the manufacturing process, allowing the at least one hinge to be formed in the same manufacturing step as the lid portion and the base portion.

In exemplary embodiments, the resilient element is located in close proximity to the hinged connection between the lid portion and the base portion. Locating the resilient element in close proximity to the hinged connection acts to maximise the transfer of energy stored in the elastically deformed resilient element, to the lid portion. Advantageously, this further facilitates movement of the lid from the closed position to the open position.

In exemplary embodiments, the resilient element comprises a spring. Advantageously, a spring provides a reproducible, low-complexity and low cost resilient element.

In exemplary embodiments, the spring is integrated with the hinged connection between the lid portion and the base portion.

In exemplary embodiments, the spring is substantially s-shaped. Advantageously, a section of metallic material formed into an s-shape further simplifies the resilient element, and advantageously, allows it to be easily integrated with the hinged connection.

In exemplary embodiments, the spring comprises a section of metallic material. Advantageously, the mechanical properties of a metallic material can be easily altered through changes in the material type and dimensions, thus imparting the spring with tailorable mechanical properties.

In exemplary embodiments, the resilient element comprises a section of resilient material. Any suitable resilient material may be used, for example a natural or synthetic rubber, an elastomer, a material comprising a Silicone, and/or any other suitably resilient material. In some embodiments the resilient element comprises a Silicone spring.

In exemplary embodiments, the resilient element comprises a first end, which is coupled to the base portion, and a second end distal the first end which is coupled to the lid portion.

In exemplary embodiments, the resilient element comprises a first end and a second end distal the first end, wherein the first end is coupled to the closure, for example to the base portion, and the second end is not coupled to the closure. In other words the second end is a free end. The resilient element having one free end, in other words attached at only one end, has the advantage that greater flexibility is provided to the resilient element. In contrast, if the resilient element was coupled to the closure at both the first and second ends, this could restrict the effect of the resilient closure and put pressure on the parts of the closure local to the spring.

In exemplary embodiments, the latching arrangement comprises a releasable inter-digitation between the lid portion and the base portion.

In exemplary embodiments, said releasable inter-digitation comprises a snap-fitting arrangement between the lid portion and the base portion. Alternatively or additionally, the latching arrangement may comprise an interference-fitting arrangement.

The incorporation of said latching arrangement means that the lid portion can be releasably secured with respect to the base portion when the lid portion is in the closed position. Advantageously, this prevents the lid portion from moving into the open position at an undesirable point in time.

In exemplary embodiments, the latching arrangement comprises the lid portion having a protrusion and the base portion having a recess, or the base portion having a protrusion and the lid portion having a recess wherein the protrusion is releasably secured within the recess when the lid portion is in the closed position. Such a latching arrangement is advantageously non-complex, meaning its manufacture could be done at reduced cost, and its operation id more straightforward for a user.

In exemplary embodiments, the protrusion is releasably secured within the recess by virtue of an interference fit. Advantageously, this means that no further component is needed to retain the protrusion within the recess. An interference fit is understood to mean a press fit or friction fit, wherein fastening is achieved by friction when the components are pressed together.

In exemplary embodiments, the aperture is defined by a body of the container. In exemplary embodiments, the base portion defines an annulus for said aperture. This ensures that the closure can be advantageously arranged to fully encompass, and as such protect, the aperture.

In exemplary embodiments, the base portion defines said aperture. For example, an inner circumference of the base portion defines the aperture. A second aspect of the invention provides a container comprising an aperture for dispensing sheet material and a closure for said aperture, said closure comprising: a base portion arranged adjacent the aperture, a lid portion hingedly connected to the base portion and configured to move between an open position and a closed position, and a latching mechanism for releasably securing the lid portion in the closed position; wherein the closure is configured to store energy upon movement of the lid portion into the closed position, and to transfer stored energy to the lid portion upon the lid portion being de-latched from the closed position.

When deformed, the closure stores potential energy. Upon the lid portion being moved from the closed position to the open position, said stored energy is transferred into movement of the lid portion. Advantageously, the lid portion is opened more easily for a user. Further, reduced contact between the user and the lid portion is possible which may advantageously reduce the risk of contamination should, for example, the container house a product for cleaning purposes.

In exemplary embodiments, the lid portion and the base portion are configured to resiliently cooperate to store energy upon movement of the lid portion into the closed position, and to transfer stored energy to the lid portion upon the lid portion being de-latched from the closed position.

In exemplary embodiments, the closure comprises at least one resilient region and at least one projection, wherein the at least one resilient region is deformed against the at least one projection upon the lid portion being moved to the closed position.

In exemplary embodiments, the lid portion comprises the at least one resilient region, and the base portion comprises the at least one projection, wherein the at least one resilient region of the lid portion is deformed against the at least one projection, upon the lid portion being moved into the closed position.

Conversely, in exemplary embodiments, the lid portion comprises at least one projection and the base portion comprises of at least one resilient portion, wherein the at least one resilient portion of the base is deformed against the at least one projection.

Advantageously, providing the resilient region on the lid/base portion, and the means to deform said resilient region in a corresponding location on the base/lid portion ensures that the maximum deformation of said resilient region occurs as the lid portion is moved into the closed position. This subsequently ensures that the maximum possible amount of energy is stored in the deformed resilient region whilst the lid portion is in the closed position.

In exemplary embodiments, the at least one resilient region is integrally formed with the closure. In exemplary embodiments, the at least one resilient region is integrally formed with the lid portion. Alternatively the at least one resilient region is integrally formed with the base portion. Advantageously, forming the at least one resilient region is integrally with the closure simplifies the manufacturing process, allowing the resilient region to be formed in the same manufacturing steps as the lid/base portion.

In exemplary embodiments, the at least one resilient region is configured to deform against the at least one projection and store energy when the lid portion is moved into the closed position, and to transfer said stored energy to the lid portion upon the lid portion being de-latched from the closed position. Advantageously, this means that no other external source of energy is required to deform the resilient region other than that provided by moving the lid portion into the closed position.

In exemplary embodiments, the at least one projection is integrally formed with the closure. In exemplary embodiments, the at least one projection is integrally formed with the base portion. Alternatively, the at least one projection is integrally formed with the lid portion. Advantageously, forming the at least one projection integrally with the closure simplifies the manufacturing process, allowing the at least one projection to be formed in the same manufacturing steps as the base/lid portion

In some embodiments, the lid portion is connected to the base portion by at least one hinge. In exemplary embodiments, the at least one hinge is integrally formed with the lid portion and the base portion.

In exemplary embodiments, the at least one hinge comprises at least two hinges and/or the at least one resilient region comprises at least two resilient regions, wherein the or each hinge and the or each resilient region are provided alternately. For example, in some embodiments the closure comprise three resilient regions and the closure comprises two hinges, wherein the resilient regions are provided either side of and in between the hinges. This alternating arrangement has the advantage that the resilient regions do not become over-stressed with stored potential energy as the lid portion is moved to the closed position. Over stressing of the resilient regions can degrade the resilience of these portions, hence reducing their effectiveness to facilitate movement of the lid from the closed position to the open position. Accordingly, by positioning the projections and resilient regions alternately with the or each hinge a more robust closure having improved longetivity is provided.

In some embodiments the or each resilient region is positioned equidistant from the or each hinge.

In some embodiments, the at least one resilient region is provided adjacent the hinge and positioned along at least a portion of a length of the at least one hinge.

In exemplary embodiments, the base portion comprises a resilient lip, and wherein a lower surface of the lid portion comprises a ridge; further wherein the resilient lip is configured to deform against the ridge and store energy upon closure of the lid portion, and transfer said stored energy to the lid portion upon the lid portion being released from the closed position.

When deformed, the resilient lip stores potential energy. Upon the lid portion being moved from the closed position to the open position, said stored energy is transferred from the resilient lip into movement of the lid portion. Advantageously, the lid portion is opened more easily for a user. Further, reduced contact between the user and the lid portion is possible which may reduce a risk of contamination should the container house a product for cleaning purposes.

In exemplary embodiments, the resilient lip extends around a circumference of an inner edge of the base portion. The resilient lip extending the full circumference of the inner edge of the base portion, means that a much larger contact area is achievable between the resilient lip and the ridge when the lid portion is in the closed position. Advantageously, this allows more potential energy to be stored in the deformation of the resilient lip, thus further facilitating movement of the lid portion from the closed position to the open position.

In exemplary embodiments, when the lid portion is in the closed position, an outer surface of the ridge is in sealing contact with an inner surface of the resilient lip. Advantageously, this means that the dispensing aperture is substantially sealed to the atmosphere. Therefore, said sealing contact ensures that, if the contents of the container were, for example, to also comprise a liquid, the loss of said liquid through evaporation would be substantially reduced.

In exemplary embodiments, the resilient lip is integrally formed with the base portion. Advantageously, this configuration simplifies the manufacturing process, allowing the resilient lip to be formed in the same manufacturing step as the base portion.

In exemplary embodiments, the ridge is integrally formed with the lid portion. Advantageously, this configuration simplifies the manufacturing process, allowing the ridge to be formed in the same manufacturing step as the lid portion.

In exemplary embodiments, said releasable inter-digitation comprises a snap-fitting arrangement between the lid portion and the base portion. In some embodiments, the closure additionally or alternatively comprises an interference-fitting arrangement between the lid portion and base portion.

In exemplary embodiments, the latching arrangement comprises the lid portion having at least one protruding ridge, and the base portion having a recessed channel, wherein the at least one protruding ridge is releasably secured within the channel when the lid portion is in the closed position. Such a latching arrangement is advantageously noncomplex, meaning its manufacture could be done at reduced cost, and its operation is more straightforward for a user.

In exemplary embodiments, the at least one protruding ridge is releasably secured within the channel by virtue of an interference fit. Advantageously, this means that no further component is needed to retain the first and second ridges within the channel.

In exemplary embodiments, the latching arrangement comprises the lid portion having a protrusion, which is releasably secured against the resilient lip when the lid portion is in the closed position. Such a latching arrangement is advantageously non-complex, meaning its manufacture could be done at reduced cost, and its operation is more straightforward for a user.

In exemplary embodiments, the protmsion is releasably secured against an outer surface of the resilient lip by virtue of an interference fit. Advantageously, this means that no further component is needed to retain the protrusion against the resilient lip.

In exemplary embodiments, the base portion defines said aperture. For example, an inner circumference of the base portion defines the aperture. A third aspect of the invention provides a container comprising an aperture for dispensing sheet material and a closure for said aperture, said closure comprising: a base portion arranged adjacent the aperture, a lid portion hingedly connected to the base portion and configured to move between an open position and a closed position, and a latching mechanism for releasably securing the lid portion in the closed position; wherein the closure further comprises first and second resilient portions extending from opposing sides of the base portion towards the centre of the aperture, and wherein each resilient portion is configured to deform and store energy upon closure of the lid portion, and to transfer said stored energy to the lid portion upon the lid portion being released from the closed position.

In some embodiments the first elongation extends from the base portion at a location diametrically opposite the location from which the second elongation extends. In some embodiments, the first elongation extends towards the second elongation.

When deformed, the resilient portions store potential energy. Upon the lid portion being moved from the closed position to the open position, said stored energy is transferred from the resilient portions into movement of the lid portion. Advantageously, the lid portion is opened more easily for a user. Further, reduced contact between the user and the lid portion is possible which may advantageously reduce the risk of contamination should, for example, the container house a product for cleaning purposes.

In exemplary embodiments, the lid portion is in the closed position, a distal end of each resilient portion abuts a lower surface of the lid portion. Advantageously, this ensures that as the lid portion is moved into the open position, the energy stored within the elastically deformed resilient portions may be more efficiently transferred to the lid portion.

In exemplary embodiments, when the lid portion is in the open position, a distal end of each resilient portion projects substantially away from the container. Advantageously, said distal ends projecting away from the container ensures that movement of the lid portion away from the closed position, towards the open position, is facilitated as far as possible. Further, as the lid portion is moved from the open position to the closed position, the extent of deformation of said resilient elements is sufficient to ensure a minimum level of stored energy therein.

In exemplary embodiments, when the lid portion is in the closed position, the distal end of the first and second resilient portions abut one another. The distal ends of the opposing resilient portions may therefore act to retain a product being dispensed from the aperture between them when the lid portion is moved into the closed position. Advantageously, this maximises convenience for a user.

In exemplary embodiments, each resilient portion is integrally formed with the base portion. Advantageously, this configuration simplifies the manufacturing process, allowing each resilient portion to be formed in the same manufacturing step as the base portion.

In exemplary embodiments, each resilient portion comprises at least one finger. Advantageously, this configuration is low-complexity, simplifying the manufacturing process and thus reducing the associated costs. Further, the desired properties can be achieved with production requiring a minimum amount of material.

In exemplary embodiments, each at least one finger is substantially curved along its length, such that the distal end of each finger projects substantially away from the container when the lid portion is in the open position. Said curvature ensures that a distal end of each finger projects away from the container when the lid portion is in the open position. Advantageously, this maximises the extent to which the lid portion is moved from the closed position to the open position

In exemplary embodiments, each finger further comprises at least one tooth arranged to project from an underside of each finger.

In exemplary embodiments, the container further comprises sheet material to be dispensed via the aperture.

In exemplary embodiments, each at least one tooth is arranged to move into contact with the sheet material when the lid portion is moved into the open position. When the lid portion is in the closed position, each resilient portion is elastically deformed such that a spacing is defined between each at least one tooth. Said spacing allows sheet material to pass therebetween. Upon the lid portion being moved into the open position, each at least one tooth moves towards one other and away from the container, advantageously, facilitating dispensing of the sheet material from the aperture.

In exemplary embodiments, each resilient portion comprises a substantially semi-hemispherical shaped section. Such a configuration ensures that the distal end of each resilient portion can easily extend away from the container when the lid portion is in the open position. Further, such a configuration ensures that said resilient portions will readily deform upon the lid portion being moved into the closed position. Advantageously, transition of the semi-hemispherical shaped sections from a condition in which they are deformed, to a condition in which they extend away from the container further facilitates movement of the lid portion from the closed position to the open position.

In exemplary embodiments, when the lid portion is in the closed position, the distal ends of each resilient portion are in sealing contact with one another, substantially sealing the aperture. Advantageously, said resilient portions being in sealing contact when the lid portion is in the closed position, means that the dispensing aperture is substantially sealed to the atmosphere. Therefore, said sealing contact ensures that, if the contents of the container were, for example, to also comprise a liquid, the loss of said liquid through evaporation would be substantially reduced.

In exemplary embodiments, said releasable inter-digitation comprises a snap-fitting arrangement between the lid portion and the base portion. Additionally or alternatively, the latching arrangement may comprise an interference fitting arrangement.

In exemplary embodiments, the latching arrangement comprises the lid portion having a first protrusion, and the base portion having a second protrusion, wherein the first protrusion is releasably secured against the second protrusion when the lid portion is in the closed position. Such a latching arrangement is advantageously non-complex, meaning its manufacture could be done at reduced cost, and its operation is more straightforward for a user.

In exemplary embodiments, the first protrusion is releasably secured against the second protrusion by virtue of an interference fit. Advantageously, this means that no further component is needed to retain the first protrusion against the second protrusion.

In exemplary embodiments, the base portion defines said aperture. For example, an inner circumference of the base portion defines the aperture.

In exemplary embodiments, the lid portion and the base portion are integrally formed by an injection moulding process. Advantageously, an injection moulding process provides a rapid throughput, reproducible method of manufacture whereby the lid portion, base portion and at least one hinge can be efficiently and economically produced.

In exemplary embodiments, the latching arrangement further comprises a release button, configured for activation to de-latch the lid portion from the closed position. Advantageously, a release button allows the lid portion to be released from the closed position, and to move into the open position quickly and easily without the requirement for the user to otherwise force the latch from the catch. Further, reduced contact between the user and the lid portion is possible which may advantageously reduce the risk of contamination should, for example, the container house a product for cleaning purposes.

In exemplary embodiments, the release button further comprises a lock, movable between a locked position, wherein activation of the release button is prevented, and an unlocked position, wherein activation of the release button is permitted. The ability to prevent activation of the release button, means that advantageously, the lid portion cannot be accidentally released from the closed position and allowed to move into the open position. This is particularly advantageous during, for example, transit or storage of the container.

In exemplary embodiments, the lock comprises a cover, said cover substantially enclosing the release button, when the lock is in the locked position. The lock being in form of a cover that encloses the release button means that no complex locking mechanism is required. Access to the release button is prevented simply by the fact it is covered up and therefore not accessible. This is particularly advantageous in, for example, transit or storage when it is possible accidental activation of the release button may occur.

In exemplary embodiments, the cover is integrally formed with the base portion. Advantageously, this configuration simplifies the manufacturing process, allowing the cover to be formed in the same manufacturing step as the base portion. A fourth aspect of the invention provides a container comprising an aperture and a closure for said aperture, said closure comprising: a base portion arranged adjacent the aperture, a lid portion hingedly connected to the base portion and configured to move between an open position and a closed position, and a latching mechanism for releasably securing the lid portion in the closed position; wherein the closure further comprises a resilient element located between the base portion and the lid portion, and wherein the resilient element is arranged and configured to deform and store energy upon movement of the lid portion into the closed position, and to transfer stored energy to the lid portion upon the lid portion being de-latched from the closed position. A fifth aspect of the invention provides a container comprising an aperture and a closure for said aperture, said closure comprising: a base portion arranged adjacent the aperture, a lid portion hingedly connected to the base portion and configured to move between an open position and a closed position, and a latching mechanism for releasably securing the lid portion in the closed position; wherein the closure is configured to store energy upon movement of the lid portion into the closed position, and to transfer stored energy to the lid portion upon the lid portion being de-latched from the closed position. A sixth aspect of the invention provides a container comprising an aperture and a closure for said aperture, said closure comprising: a base portion arranged adjacent the aperture, a lid portion hingedly connected to the base portion and configured to move between an open position and a closed position, and a latching mechanism for releasably securing the lid portion in the closed position; wherein the closure further comprises first and second resilient portions extending from opposing sides of the base portion towards the centre of the aperture, and wherein each resilient portion is configured to deform and store energy upon closure of the lid portion, and to transfer said stored energy to the lid portion upon the lid portion being released from the closed position. A seventh aspect of the invention provides a closure for mounting on a container having a dispensing aperture, said closure comprising: a base portion configured for mounting the closure on a container, a lid portion hingedly connected to the base portion and configured to move between an open position and a closed position, and a latching mechanism for releasably securing the lid portion in the closed position; wherein the closure further comprises a resilient element located between the base portion and the lid portion, and wherein the resilient element is arranged and configured to deform and store energy upon movement of the lid portion into the closed position, and to transfer stored energy to the lid portion upon the lid portion being de-latched from the closed position.

An eighth aspect of the invention provides a closure for mounting on a container having a dispensing aperture, said closure comprising: a base portion configured for mounting the closure on a container, a lid portion hingedly connected to the base portion and configured to move between an open position and a closed position, and a latching mechanism for releasably securing the lid portion in the closed position; wherein the closure is configured to store energy upon movement of the lid portion into the closed position, and to transfer stored energy to the lid portion upon the lid portion being de-latched from the closed position. A ninth aspect of the invention provides a closure for mounting on a container having a dispensing aperture, said closure comprising: a base portion configured for mounting the closure on a container, a lid portion hingedly connected to the base portion and configured to move between an open position and a closed position, and a latching mechanism for releasably securing the lid portion in the closed position; wherein the closure further comprises first and second resilient portions extending from opposing sides of the base portion towards the centre of the aperture, and wherein each resilient portion is configured to deform and store energy upon closure of the lid portion, and to transfer said stored energy to the lid portion upon the lid portion being released from the closed position.

In a tenth aspect a closure is provided for mounting on a container, said closure comprising: a base portion configured for mounting the closure on a container and defining a dispensing aperture, a lid portion hingedly connected to the base portion and configured to move between an open position and a closed position, and a latching mechanism for releasably securing the lid portion in the closed position; wherein the closure further comprises a resilient element located between the base portion and the lid portion, and wherein the resilient element is arranged and configured to deform and store energy upon movement of the lid portion into the closed position, and to transfer stored energy to the lid portion upon the lid portion being de-latched from the closed position.

In an eleventh aspect a closure is provided for mounting on a container, said closure comprising: a base portion configured for mounting the closure on a container and defining a dispensing aperture, a lid portion hingedly connected to the base portion and configured to move between an open position and a closed position, and a latching mechanism for releasably securing the lid portion in the closed position; wherein the closure is configured to store energy upon movement of the lid portion into the closed position, and to transfer stored energy to the lid portion upon the lid portion being de-latched from the closed position.

In a twelfth aspect a closure is provided for mounting on a container, said closure comprising: a base portion configured for mounting the closure on a container and defining a dispensing aperture, a lid portion hingedly connected to the base portion and configured to move between an open position and a closed position, and a latching mechanism for releasably securing the lid portion in the closed position; wherein the closure further comprises first and second resilient portions extending from opposing sides of the base portion towards the centre of the aperture, and wherein each resilient portion is configured to deform and store energy upon closure of the lid portion, and to transfer said stored energy to the lid portion upon the lid portion being released from the closed position.

As described above, in exemplary embodiments, the lid portion and the base portion are integrally formed, for example by an injection moulding process.

In exemplary embodiments, the closure is formed by an injection moulding process. In other embodiments, the closure is formed using a 3D printing or additive manufacturing process.

In a further aspect, a computer readable medium is provided comprising computer-executable instructions configured to cause a 3D printer to print a closure as disclosed herein.

In some embodiments, the container comprises a flexible packaging, for example such as those used in the packaging of cleaning or baby wipes. In some embodiments, the container comprises a substantially rigid container, for example a tub-like container. The closures disclosed herein may be applied to any suitable type, size and/or shape of container. For example, the container may be substantially cuboid in shape. In some embodiments the closure is configured such that the hinge extends substantially parallel to the long edge of the cuboid container, in other examples the hinge extends substantially parallel to the short edge.

Whilst the embodiments disclosed herein are described in terms of a container for wipes, it will of course be appreciated that containers disclosed herein may be used to house any desired objects or material. In some embodiments, the container may be configured to contain laundry tablets or capsules.

In some embodiments, the container and closure are integrally formed as a single component. In alternative embodiments the container and closure comprise separate components.

In some embodiments, the lid portion and the base portion of the closure are integrally formed as a single component. In alternative embodiments, the lid portion and the base portion of the closure comprise separate components.

It will be appreciated that the optional features described above and herein may be applicable to any aspect of the disclosure. All combinations contemplated will not be explicitly recited here for the sake of brevity.

BRIEF DESCRIPTION OF THE DRAWINGS

Embodiments of the invention will now be described with reference to the accompanying drawings, in which:

Figure la is a front perspective view of a closure, with the lid portion in an open position, according to a first embodiment of the invention.

Figure lb is a front perspective view of the closure of Figure la, with the lid portion in a closed position.

Figure lc is a rear perspective view of the closure of Figure la, with the lid portion in an open position.

Figure Id is a rear perspective view of the closure of Figure la, with the lid portion in a closed position.

Figure le is a perspective view of a lock for a closure, with the cover in an open position, according to an alternative embodiment of the invention.

Figure 2a is a front perspective view of a closure, with the lid portion in an open position, according to a second embodiment of the invention.

Figure 2b is a front perspective view of the closure of Figure 2a, with the lid portion in a closed position.

Figure 2c is a front perspective view of the closure of Figure 2a, with the lid portion in an open position, and the spring in a partially inserted position.

Figure 2d is a front perspective view of the closure of Figure 2a, with the lid portion in an open position, and the spring in a fully inserted position.

Figure 3a is a front perspective view of a closure, with the lid portion in an open position, according to a third embodiment of the invention.

Figure 3b is a cross section view of the closure of Figure 3a, with the lid portion in a partially open position.

Figure 3c is a front perspective view of the closure of Figure 3a, with the lid portion in a closed position.

Figure 3d is a cross section view of the closure of Figure 3a, with the lid portion in a closed position.

Figure 4a is a front perspective view of a closure, with the lid portion in an open position, according to a fourth embodiment of the invention.

Figure 4b is a cross section view of the closure of Figure 4a, with the lid portion in a partially open position.

Figure 4c is a front perspective view of the closure of Figure 4a, with the lid portion in a closed position.

Figure 4d is a cross section view of the closure of Figure 4a, with the lid portion in a closed position.

Figure 4e is a cross section view of first and second resilient elements for a closure, with the first and second resilient elements in a compressed position, according to an alternative embodiment of the invention.

Figure 4f is a cross section view of the first a d second resilient element of Figure 4e, with the first and second resilient elements in an uncompressed position.

Figure 5a is a front perspective view of a closure, with the lid portion in an open position, according to a fifth embodiment of the invention

Figure 5b is a cross section view of the closure of Figure 5a, with the lid portion in a partially open position.

Figure 5c is a front perspective view of the closure of Figure 5a, with the lid portion in a closed position.

Figure 5d is a cross section view of the closure of Figure 5a, with the lid portion in a closed position.

Figure 5e is a perspective view of the underneath of the closure of Figure 5a, with the lid portion in a closed position.

Figure 6a is a front perspective view of a closure, with the lid portion in an open position, according to a sixth embodiment of the invention.

Figure 6b is a rear perspective view of the closure of Figure 6a, with the lid portion in a closed position.

Figure 6c is a close-up perspective view of the closure of Figure 6a, with the lid portion in an open position.

Figure 6d is a cross section view of the closure of Figure 6a, with the lid portion in a closed position.

Figure 6e is a cross section view of the closure of Figure 6a, with the lid portion in a partially open position.

Figure 6f is a cross section perspective view of the closure of Figure 6a, with the lid portion in a partially open position.

Figure 6g is a cross section view of the latching mechanism of the closure of Figure 6a.

Figure 6h is a perspective cross section view of the latching mechanism of the closure of Figure 6a.

Figure 6i is a cross section view of the latching mechanism of the closure of Figure 6a.

Figure 6j is a cross section view of the latching mechanism of the closure of Figure 6a.

Figure 7a is a front perspective view of a closure, with the lid portion in a closed position, according to a seventh embodiment of the invention.

Figure 7b is a front perspective view of the closure of Figure 7a, with the lid portion in an open position.

Figure 7c is a close-up perspective view of the closure of Figure 7a, with the lid portion in a closed position.

Figure 7d is a close-up perspective view of the closure of Figure 7a, with the lid portion in an open position.

Figure 7e is a cross section perspective view of the closure of Figure 7a, with the lid portion in a closed position.

Figure 7f is a cross section perspective view of the closure of Figure 7a, with the lid portion in an open position. DETAILED DESCRIPTION OF EMBODIMENT(S)

Referring firstly to Figures la to Id, a closure for mounting on a container having a dispensing aperture is generally indicated at 100. The closure 100 includes a base portion 102 and a lid portion 104. The base portion 102 is arranged to surround the aperture 106. The lid portion 104 is hingedly connected to the base portion 102, allowing it to be moved between a closed position in which the aperture 106 is covered by the lid portion 104, and an open position, in which the aperture 106 is exposed.

In this embodiment, the aperture 106 allows sheet material 108, such as baby wipes, face wipes or cleaning wipes to be dispensed from a container 110. The base portion 102 may be fixedly attached to such a container 110 and form an annulus for the aperture 106.

Referring to Figures la and lb, a lower surface 112 of the lid portion 104 has an inner ridge 114 projecting orthogonally to the lower surface 112 of the lid portion 104. In this embodiment, the inner ridge 114 extends concentrically with an outer ridge 116. The outer ridge 116 is arranged around an outer perimeter of the lid portion 104, and projects orthogonally to the lower surface 112 of the lid portion 104.

The base portion 102 has a projecting lip 118. The lip 118 is integrally formed around the circumference of an inner edge 120 of the base portion 102.

In the closed position, an outer surface 122 of the inner ridge 114, nests in sealing contact with an inner surface 124 of the lip 118. In addition, an upper surface 126 of the lip 118 provides a seating surface, upon which the lower surface 112 of the lid portion 104 is in removable contact, when the lid portion 104 is in the closed position.

Such a configuration facilitates the lid portion 104 being secured, when desired, in the closed position. In addition, said sealing contact ensures that, if the sheet material 108 being dispensed were, for example, to also comprise a liquid, the loss of said liquid through evaporation is substantially reduced.

Again referring to Figures la and lb, a plurality of hinges connect the lid portion 104 to the base portion 102. In this embodiment, a first hinge 128 and an identical second hinge 130 are fixedly connected to both the lid portion 104 and the base portion 102. Said first hinge 128 and second hinge 130 are configured to allow the lid portion 104 to move between the closed position and the open position.

In this embodiment, the base portion 102, lid portion 104, and first and second hinges 128, 130 are integrally formed by an injection moulding process. The injection moulding process utilised plastics material such as polypropylene (PP). Advantageously, an injection moulding process provides a rapid throughput, reproducible method of manufacture whereby the base portion 102, lid portion 104 and first and second hinges 128, 130 can be efficiently and economically produced in a minimum number of manufacturing steps. However, in alternative embodiments, other appropriate materials and manufacturing processes may be used.

In this embodiment, the first and second hinges 128, 130 are arranged in close proximity to one another, in alignment along a first external edge 132 of the base portion 102. The first and second hinges 128, 130 each consist of an injection moulded extension of plastics material, integrally formed with both the base portion 102 and the lid portion 104. Said extensions of plastics material are of a sufficiently small cross sectional area, to impart a high level of flexibility. Thus, said extensions of plastics material form first and second hinges 128, 130 of advantageously low complexity.

With reference to Figures lc and Id, in this embodiment, identical first, second and third projections 134 are arranged alternately with said first and second hinges 128, 130. Said projections 134 project orthogonally from the first external edge 132 of the base portion 102. Identical first, second and third recessed portions 136 are located along a first external edge 138 of the lid portion 104. The locations of said recessed portions 136 are arranged to correspond to those of the first, second and third projections 134. Said recessed portions 136 are configured to elastically deform upon the application of stress. Referring again to Figure la, when the lid portion 104 is moved into the closed position, an inner surface 140 of the first, second and third projections 134 is brought into contact with an internal surface 142 of the first, second and third recessed portions 136 respectively. This results in the elastic deformation of each recessed portion 136 when the lid portion 104 is in the closed position.

When elastically deformed, the first, second and third recessed portions 136 store potential energy. Upon the lid portion 104 being moved from the closed position to the open position, the first, second and third recessed portions 136 return to their predeformation dimensions, transferring said stored energy into movement of the lid portion 104. The lid portion 104 is thus not only opened more easily, but advantageously reduced contact between the user and the lid portion 104 is possible, which may be ideal when the sheet material 108 in question is, for example, cleaning or baby wipes.

Locating the first, second and third projections 134 and first, second and third recesses 136 in close proximity to the first and second hinges 128, 130 acts to maximise the transfer of stored potential energy to the lid portion 104. Advantageously, this further facilitates movement of the lid portion 104 from the closed position to the open position.

As previously mentioned and can be seen from Figure la, the first, second and third projections 134, and hence the first, second and third recessed portions 136, are positioned alternately with the first and second hinges 128, 130. In other words, the three projections 134, and hence three recessed portions 136, are provided either side of and in between the first and second hinges 128, 130. In some embodiments the projections 134 and recessed portions 136 are positioned such that they are equidistant from the hinges 128,130. This alternating arrangement has the advantage that the recessed portions 136 do not become over stressed with stored potential energy as the lid portion 104 is moved from the open position to the closed position. Over stressing of the recessed portions 136 can degrade the resilience of these portions, hence reducing their effectiveness to facilitate movement of the lid from the closed position to the open position. Accordingly, by positioning the projections 134 and recessed portions 136 alternately with the hinges 128, 130 a more robust closure 100 having improved longetivity is provided.

With reference again to Figures la and lb, the lower surface 112 of the lid portion 104 has a latch 144. Said latch 144 is in the form of a protrusion, integrally formed with the lid portion 104. Said latch 144 is located towards a second external edge 146 of the lid portion 104, said second external edge 146 opposing the first external edge 138, to which the first and second hinges 128, 130 are fixedly connected. The latch 144 projects orthogonally to the lower surface 112 of the lid portion 104 towards a corresponding catch 148, located in the upper surface 126 of the lip 118 of the base portion 102. Said catch 148 is in the form of a recess, configured to receive the protruding latch 144 in an inter-digitation, snap-fit arrangement.

When the lid portion 104 is in the closed position, the latch 144 is releasably secured within the recessed catch 148 by virtue of an interference fit. In this embodiment, said interference fit is the result of frictional forces acting between the external surfaces of the latch 144, and the internal surfaces of the catch 148. In alternative embodiments, said interference fit may be the result of the latch 144 having further, smaller, protrusions, and the catch 148 having corresponding further, smaller recesses.

The lid portion 104 can therefore be releasably secured with respect to the base portion 102, when the lid portion 104 is in the closed position, thus ensuring sealing contact between the outer surface 122 of the inner ridge 114, and the inner surface 124 of the lip 118. Advantageously, this prevents the lid portion 104 from moving into the open position and exposing the aperture 106 at an undesirable time.

The catch 148 is located towards a second external edge 150 of the base portion 102. The base portion 102 also has a release button 152, located along the second external edge 150 of the base portion 102, in close proximity to the catch 148. In this embodiment, the release button 152 is a projecting section of the second external edge 150 of the base portion 102.

When the lid portion 104 is in the closed position, the application of pressure upon said release button 152, from for example, a user's finger, acts to elastically deform the base portion 102 in the immediate vicinity of the release button 152. Said deformation causes the catch 148 to move laterally with respect to the base portion 102. The interference fit between the latch 144 and the catch 148 is subsequently interrupted, and as such, the lid portion 104 is free to move into the open position.

In this embodiment, the latch 144 and the release button 152 are integrally formed with the lid portion 104 and the base portion 102, respectively. Advantageously, this configuration not only simplifies the form of the latch 144 and the release button 152 as far as possible, but also simplifies the manufacturing process, allowing the latch 144 and the release button 152 to be formed in the same manufacturing step as the lid portion 104 and base portion 102 respectively. In alternative embodiments, the latch 144 and release button 152 may be manufactured as separate components and assembled with the lid portion 104 and the base portion 102 in separate manufacturing steps.

With reference to Figure le, the release button 152 may optionally have a lock, indicated generally at 154. The lock 154 prevents accidental movement of the lid portion 104 into the open position. The lock 154 can be transitioned between a locked position, in which activation of the release button 152 is prevented, and an unlocked position, in which activation of the release button 152 is permitted. In this embodiment, the lock 154 is a cover 156. The cover 156 is integrally formed with the base portion 102, and is hingedly connected to the second external edge 150 of the base portion 102, immediately adjacent the release button 152. In the unlocked position, the cover 156 is displaced around the axis of a hinge 158 such that the release button 152 is exposed, and operable. The cover 156 can be moved, around the axis of the hinge 158 such that the cover 158 is lifted into the locked position, wherein the release button 152 is encompassed, thus preventing access. An upper end of the cover has a second latch 160 in the form of a protrusion, which, when the cover 156 is arranged in the locked position, removably engages with a corresponding second catch 162, recessed between the release button 152 and the second external edge 146 of the lid portion 104, proximate the release button 152.

When the lock 154 is in the locked position, the second latch 160 is releasably secured within the second catch 162 by virtue of an interference fit. In this embodiment, said interference fit is the result of frictional forces acting between the external surfaces of the second latch 160, and the internal surfaces of the second catch 162.

Being able to prevent activation of the release button 152 means that advantageously, the lid portion 104 is not accidentally released from the closed position and allowed to move into the open position. This is particularly advantageous during, for example, transit or storage of the sheet material 108. A second embodiment of the invention is shown in figures 2a to 2d. Features corresponding to those of the first embodiment have been given corresponding reference numbers, except with the prefix ‘2’. Only features that differ from those of the first embodiment are discussed herein.

Referring firstly to Figures 2a and 2b, a closure for mounting on a container having a dispensing aperture is generally indicated at 200. The closure 200 includes a base portion 202 and a lid portion 204. The base portion defines an annulus for the aperture 206.

In this embodiment, a single hinge 228 is fixedly connected between the base portion 202 and the lid portion 204. Said hinge 228 is configured to allow the lid portion 202 to move between the closed position, and the open position.

With particular reference to Figures 2c and 2d, in this embodiment, the base portion 202 has first and second, identical transverse recesses 264. Said recesses 264 are located adjacent opposing ends of the hinge 228, and house identical first and second springs 266. When the lid portion 204 is in the closed position, the first and second springs 266 are covered by the hinge 228.

In this embodiment, the first and second springs 266 are s-shaped sections of metallic material. The use of a section of metallic material formed into an s-shape simplifies the configuration of each spring 266. In addition, the mechanical properties of the first and second springs 266 can advantageously be tailored through alteration of the type of metallic material and its dimensions.

As can be seen with reference to Figure 2c, each spring 266 comprises a first end 266a, which is coupled to an inner edge 220 of the base portion 202, and a second free end 266b, distal the first end 266a. In other words, the second end 266b is not coupled or fixed to the closure. Figure 2c shows the first and second springs 266 prior to being fully inserted into the first and second transverse recesses 264 respectively. Figure 2d shows the first and second springs 266 fully inserted into the first and second transverse recesses 244.

In alternative embodiments, other spring configurations may be used, and may be manufactured from any material demonstrating the required mechanical properties.

The first and second springs 266 are configured to elastically deform upon the application of stress. When the lid portion 204 is moved into the closed position, the lower surface 212 of the lid portion 204 is brought into contact with an upper surface 268 of each spring 266. This results in the elastic deformation of each spring 266 when the lid portion 204 is in the closed position.

When elastically deformed, the first and second springs 266 store potential energy. Upon the lid portion 204 being moved from the closed position to the open position, the first and second springs 266 return to their pre-deformation dimensions, transferring said stored energy into movement of the lid portion 204. The lid portion 204 is thus not only opened more easily, but advantageously reduced contact between the user and the lid portion 204 is possible, which may be ideal when the sheet material 208 in question is, for example, cleaning or baby wipes.

Since the springs 266 are only coupled to the base portion 202 at a one end, greater flexibility is provided to the springs 266. In contrast, were the springs 266 to be couple to the closure at both ends, this could restrict the effect of the spring and put stress on the parts of the closure local to the spring.

With reference again to Figures 2c and 2d, in this embodiment the base portion 202 has a channel 270, extending around the circumference of the inner edge 220 of the base portion 202. The width of said channel 270 corresponds to the separation distance between the inner ridge 214 and the outer ridge 216 of the lid portion 204. Thus, in the closed position, the inner and outer ridges 214, 216 nest within said channel 270 in an inter-digitation, snap-fit arrangement.

In the closed position, the lid portion 204 is retained by an interference fit between an outer surface 272 of the outer ridge 216 and an outer internal surface 274 of the channel 270, and between the inner surface 276 of the inner ridge 214 and the inner internal surface 278 of the channel 270. In this embodiment, the interference fit is brought about by frictional forces acting between said respective surfaces.

Referring again to Figures 2c and 2d, in this embodiment, the release button 252 is a compressible section of the base portion 202. Said compressible section is formed by the addition of two near full thickness grooves 280, arranged orthogonal to the second external edge 250 of the base portion 202. Said grooves 280, and the separation therebetween, define the release button 252.

When the lid portion 204 is in the closed position, the application of pressure upon said release button 252, from for example, a user's finger, acts to elastically deform the base portion 202 in the immediate vicinity of the release button 252, in the direction of the outer surface 272 of the outer ridge 216 of the lid portion 204. Said deformation acts to overcome the friction forces acting between the inner ridge 214 and outer ridge 216 of the lid portion 204, and the internal surface 274, 278 of the channel 270, thus the interference fit is interrupted and the lid portion 202 is urged away from the closed position. A third embodiment of the invention is shown in figures 3a to 3d. Features corresponding to those of the first embodiment have been given corresponding reference numbers, except with the prefix ‘3’. Only features that differ from those of the first embodiment are discussed herein.

Referring firstly to Figures 3a and 3b, a closure for mounting on a container having a dispensing aperture is generally indicated at 300. The closure 300 includes a base portion 302 and a lid portion 304. The base portion defines an annulus for the aperture 306. A lower surface 312 of the lid portion 304 has an inner ridge 314 projecting orthogonally to the lower surface 312 of the lid portion 304. In this embodiment, the inner ridge 314 extends concentrically with an outer ridge 316. The outer ridge 316 is arranged around an outer perimeter of the lid portion 304, and projects orthogonally to the lower surface 312 of the lid portion 304.

The base portion 302 has an orthogonally projecting lip 318. The lip 318 is integrally formed around the circumference of the inner edge 320 of the base portion 302.

With reference to Figure 3d, in the closed position, an outer surface 382 of the inner ridge 314, nests in sealing contact with an inner surface 324 of the lip 318. In addition, an upper surface 326 of the lip 318 provides a seating surface, upon which the lower surface 312 of the lid portion 304 may be in removable contact when the lid portion 304 is in the closed position.

Such a configuration facilitates the lid portion 304 being secured, when desired, in the closed position. In addition, said sealing contact ensures that if the sheet material 308 being dispensed were, for example, to also comprise a liquid, the loss of said liquid through evaporation is reduced.

Referring again to Figure 3d, in this embodiment, the lip 318 is configured to elastically deform upon the application of stress. When the lid portion 304 is moved into the closed position, an outer surface 382 of the inner ridge 314 is brought into contact with the inner surface 324 of the lip 318. Friction forces acting between the interfacing outer surface 382 of the inner ridge 314, and inner surface 324 of the lip 318 cause elastic deformation of the lip 318 when the lid portion 304 is in the closed position.

When elastically deformed, the lip 318 stores potential energy. Upon the lid portion 304 being moved from the closed position to the open position, the lip 318 returns to its pre-deformation dimensions, transferring said stored energy into movement of the lid portion 304. Thus, the lid portion 304 is not only opened more easily, but advantageously reduced contact between the user and the lid portion 304 is possible, which may be ideal when the sheet material 308 in question is, for example, cleaning or baby wipes.

In this way, the inner ridge 314 of the lid portion 304 and the resilient lip 318 of the base portion 302 co-operate both to provide sealing engagement between the lid portion 304 and the base portion 302 and also to facilitate opening of the closure 300. This dual function of the inner ridge 314 and lip 318 reduces the number of components required in the closure and hence permits a more simple construction.

The lip 318 extending the full circumference of the inner edge 320 of the base portion 302, means that a much larger contact area is achievable between the lip 318 and the inner ridge 314 when the lid portion 304 is in the closed position. Advantageously, this allows more potential energy to be stored in the elastic deformation of the lip 318, thus further facilitating movement of the lid portion 304 from the closed position to the open position.

With reference again to Figure 3 a, in this embodiment, the lower surface 312 of the lid portion 304 has a latch 344. Said latch 344 is in the form of a protrusion, integrally formed with the lid portion 304. Said latch 344 is located towards the second external edge 346 of the lid portion 304, said second external edge 346 opposing the first external edge 338, to which first and second hinges 328, 330 are fixedly connected. The latch 344 projects orthogonally to the lower surface 312 of the lid portion 304, towards the lip 318.

In the closed position, the lid portion 304 is retained by virtue of an interference fit between an inner surface 384 of the latch 344 and an outer surface 386 of the lip 318. In this embodiment, said interference fit is the result of frictional forces acting between the respective surfaces.

The lid portion 304 can therefore be releasably secured with respect to the base portion 302, in an inter-digitation, snap-fit arrangement. When the lid portion 304 is in the closed position, thus ensuring sealing contact between the inner surface 384 of the latch 344, and the outer surface 386 of the lip 318. Advantageously, this prevents the lid portion 304 from moving into the open position and exposing the aperture 306 at an undesirable time.

The base portion 302 also has a release button 352, located along the second external edge 350 of the base portion 302, in close proximity to the point at which the inner surface 384 of the latch contacts the outer surface 386 of the lip 318, when the lid portion 304 is in the closed position. In this embodiment, the release button 352 is a projecting section of the second external edge 350 of the base portion 302.

When the lid portion 304 is in the closed position, the application of pressure upon said release button 352, from for example, a user's finger, acts to elastically deform the base portion 302 in the immediate vicinity of the release button 352. Said deformation causes the lip 318 to move laterally with respect to the base portion 302. The interference fit between the latch 344 and the lip 318 is subsequently interrupted, and as such, the lid portion 304 is free to move into the open position.

In this embodiment, the latch 344 and the release button 352 are integrally formed with the lid portion 304 and the base portion 302 respectively. Advantageously, this configuration not only simplifies the form of the latch 344 and the release button 352 as far as possible, but also simplifies the manufacturing process, allowing the latch 344 and the release button 352 to be formed in the same manufacturing step as the lid portion 304 and base portion 302 respectively. In alternative embodiments, the latch 344 and release button 352 may be manufactured as separate components and assembled with the lid portion 304 and the base portion 302 in separate manufacturing steps.

As will be understood from the foregoing description, the resilient lip 318 provided on the base portion performs multiple functions. As described above the lip 318 cooperates with the inner ridge 314 of the lid portion 304 to provide sealing engagement between the lid portion 304 and the base portion 302. Cooperation between the lip 318 and the ridge 314 also causes elastic deformation of the lip 318 when the lid is in the closed position and hence facilitates the spring open action of the lid. In addition the lip 318 of the base portion 302 cooperates with the latch 344 of the lid portion 304 to secure the lid in the closed position. Since multiple functions are performed by the same component, i.e. the lip 318, this reduces the number of components required in the closure and hence permits a more simple construction. A fourth embodiment of the invention is shown in figures 4a to 4d. Features corresponding to those of the first embodiment have been given corresponding reference numbers, except with the prefix ‘4’. Only features that differ from those of the first embodiment are discussed herein.

Referring firstly to Figures 4a, a closure for mounting on a container having a dispensing aperture is generally indicated at 400. The closure 400 includes a base portion 402 and a lid portion 404. The base portion defines an annulus for the aperture 406.

Referring to Figures 4a and 4b, in this embodiment, the base portion 402 has a first elongation 487, extending from a first side 490 of the inner edge 420 of the base portion 402 towards the centre of the aperture 406. The base portion 402 also has a second, identical elongation 491, extending from a second, opposing side 492 of the inner edge 420 of the base portion 402, towards the centre of the aperture 406. In other words, the first elongation 487 is diametrically opposite the second elongation 491. The first side 490 of the inner edge 420 of the base portion 402 is provided adjacent a hinge 428, and the second side 492 if the inner edge 420 of the base portion 402 is provided opposite the first side 490, adjacent a release button 452. In this way, the first and second elongations 487, 491 extend from opposing sides of the inner edge 420 of the base portion towards the centre of the aperture 406, and in the illustrated embodiment, towards each other.

Both the first elongation 487 and the second elongation 491 are curved along their length, such that a distal end 493 of the first elongation 487 and a distal end 494 of the second elongation 491 each project away from the base portion 402 when the lid portion 404 is in the open position.

Such a curvature ensures that, as the lid portion 404 is moved towards the closed position, the lower surface 412 of the lid portion 404 is brought into contact with the distal ends 493, 494 of each of the first and second elongations 487, 491. The first elongation 487 and the second elongation 491 are configured to elastically deform upon the application of stress. Therefore, with reference to Figures 4c and 4d, as the lid portion 404 is further moved into the closed position, the distal ends 493, 494 of the first and second elongations 487, 491 abut the lower surface 412 of the lid portion 404, and as such, are compressed. When the lid portion 404 is in the closed position, the first and second elongations 487, 491 are elastically deformed.

When elastically deformed, the first and second elongations 487, 491 store potential energy. Upon the lid portion 404 being moved from the closed position to the open position, the first and second elongations 487, 491 return to their pre-deformation dimensions, transferring said stored energy into movement of the lid portion 404. The lid portion 404 is thus not only opened more easily, but advantageously reduced contact between the user and the lid portion 404 is possible, which may be ideal when the sheet material 408 in question is, for example, cleaning or baby wipes.

In addition, with particular reference to Figure 4d, when the lid portion 404 is in the closed position, the distal end 493 of the first elongation 487 abuts the distal end 494 of the second elongation 491. This ensures that the first and second elongations 487, 491 cooperate to retain the sheet material 408 being dispensed from the aperture 406 between them, when the lid portion 404 is moved into the closed position. Therefore, this advantageously maximises convenience for the user.

With reference to figures 4e and 4f, in an alternative embodiment, a lower surface 495 of the first elongation 487 and a lower surface 496 of the second elongation 491 may each have a retaining tooth 497 projecting therefrom. With reference to Figure 4e, when the lid portion 404 is in the closed position, or alternately, upon the application of pressure from, for example, a user's fingers upon the first and second elongations 487, 491, said retaining teeth 497 are angled such that they engage the underlying sheet material 408 therebetween. With reference to Figure 4f, upon either the lid portion 404 being moved into the open position, or the removal of said alternative pressure, the first and second elongations 487, 491 return to their pre-deformation conformations. In doing so, said retaining teeth 497 move away from the base portion, along with the sheet material retained therebetween. Advantageously, dispensing of the sheet material 408 from the aperture is therefore facilitated.

In this embodiment, the first and second elongations 487, 491, and their respective retaining teeth 497 are integrally formed with the base portion 402. In alternative embodiments, these features may be manufactured as separate components and assembled with the base portion 402 and lid portion 404 in separate manufacturing steps. In addition, in alternative embodiments, the retaining teeth 497 may be barbed, hooked or of any configuration suitable for retaining the sheet material 408 therebetween.

With reference again to Figures 4a and 4b, in this embodiment, a single hinge 428 is fixedly connected to both the lid portion 402 and the base portion 404. Said hinge 428 is configured to allow the lid portion 404 to move between the closed position, and the open position.

The second external edge 446 of the lid portion 404 has a latch 444. Said latch 444 is in the form of a protrusion, integrally formed with the lid portion 404. Said latch 444 is located at the second external edge 446 of the lid portion 404, said second external edge 446 opposing the first external edge 438, to which the hinge 428 is fixedly connected. The latch 444 projects in a direction parallel to the lower surface 412 of the lid portion 404 towards a corresponding catch 448. In this embodiment, said catch 448 is provided by a channel 470, extending around the circumference of the inner edge 420 of the base portion 402. The channel 470 is recessed, and as such is configured to releasably receive the latch 444 in an inter-digitation, snap-fit arrangement.

When the lid portion 104 is in the closed position, the latch 444 is releasably secured within the catch 448 by virtue of an interference fit with an opposing protrusion 485, integrally formed with the outer internal surface 474 of the channel 470. In an alternative embodiment, said interference fit may be the result of frictional forces between external surfaces of the protrusion and internal surfaces of the recess.

In the closed position, the lid portion 404 is therefore releasably secured with respect to the base portion 402, thus ensuring sealing contact between the lid portion 404 and the base portion 402. Advantageously, this also prevents the lid portion 404 from moving into the open position and exposing the aperture 406 at an undesirable time.

The opposing protrusion 485 is located within the channel 470, towards a second external edge 450 of the base portion 402. The base portion 402 also has a release button 452, located along the second external edge 450 of the base portion 402, in close proximity to the opposing protrusion 485. In this embodiment, the release button 452 is a projecting section of the second external edge 450 of the base portion 402.

When the lid portion 404 is in the closed position, the application of pressure upon said release button 452, from for example, a user's finger, acts to elastically deform the base portion 402 in the immediate vicinity of the release button 452. Said deformation causes the opposing protrusion 485 to move laterally with respect to the base portion 402, away from the latch 444. The interference fit between the latch 444 and the opposing protrusion 485 is subsequently interrupted, and as such, the lid portion 404 is free to move into the open position.

In this embodiment, the latch 444, and the opposing protrusion 485 and the release button 452 are integrally formed with the lid portion 404 and the base portion 402 respectively. Advantageously, this configuration not only simplifies the form of these features as far as possible, but also simplifies the manufacturing process, allowing the said features to be formed in the same manufacturing step as the lid portion 404 and base portion 402. In alternative embodiments, the latch 444, and the opposing protrusion 485 and the release button 452 may be manufactured as separate components, and assembled with the lid portion 404 and the base portion 402 in separate manufacturing steps. A fifth embodiment of the invention is shown in figures 5a to 5e. Features corresponding to those of the first embodiment have been given corresponding reference numbers, except with the prefix ‘5’. Due to the level of similarity with the fourth embodiment as previously described, only features that differ from those of the first and fourth embodiments are discussed herein.

Referring firstly to Figures 5a and 5b, a closure for mounting on a container having a dispensing aperture is generally indicated at 500. The closure 500 includes a base 502 portion and a lid portion 504. The base portion defines an annulus for the aperture 506.

In this embodiment, the base portion 502 has a first elongation 587, extending from a first side 590 of the inner edge 520 of the base portion 502 towards the centre of the aperture 506. The base portion 502 also has a second, identical elongation 591, extending from a second, opposing side 592 of the inner edge 520 of the base portion 502, towards the centre of the aperture 506. In other words, the first elongation 587 is diametrically opposite the second elongation 591. The first side 590 of the inner edge 520 of the base portion 502 is provided adjacent a hinge 528, and the second side 592 if the inner edge 520 of the base portion 502 is provided opposite the first side 590, adjacent a release button 552. In this way, the first and second elongations 587, 591 extend from opposing sides of the inner edge 520 of the base portion towards the centre of the aperture 506. Referring to Figure 5a, in this embodiment the first and second elongations 587, 591 extend towards each other.

The distal ends of both the first elongation 587 and the second elongation 591 have identical first and second semi-hemispherical shaped sections 588, 589. Said semi-hemispherical shaped sections 588, 589 are configured such that the distal ends of both the first and second elongations 587, 591 project away from the base portion 502 when the lid portion 504 is in the open position.

Such a configuration ensures that, as the lid portion 504 is moved towards the closed position, the lower surface 512 of the lid portion 504 is brought into contact with the first and second semi-hemispherical shaped sections 588, 589. The first and second semi-hemispherical shaped sections 588, 589 are configured to elastically deform upon the application of stress. Therefore, as the lid portion 504 is further moved into the closed position, the first and second semi-hemispherical shaped sections 588, 589 abut the lower surface 512 of the lid portion 504, and as such, are compressed. When the lid portion 504 is in the closed position, the first and second semi-hemispherical shaped sections 588, 589 are elastically deformed.

When elastically deformed, the first and second semi-hemispherical shaped sections 588, 589 store potential energy. Upon the lid portion 504 being moved from the closed position to the open position, the first and second semi-hemispherical shaped sections 588, 589 return to their pre-deformation dimensions, transferring said stored energy into movement of the lid portion 504. The lid portion 504 is thus not only opened more easily, but advantageously reduced contact between the user and the lid portion 504 is possible, which may be ideal when the sheet material 508 in question is, for example, cleaning or baby wipes.

In addition, with particular reference to Figure 5d, when the lid portion 504 is in the closed position, a distal end 598 of the first semi-hemispherical shaped section 588 abuts a distal end 599 of the second semi-hemispherical shaped section 589. This ensures that the first and second elongations 587, 591 cooperate to retain the sheet material 508 being dispensed from the aperture 506 between them, when the lid portion 504 is moved into the closed position. Therefore, advantageously, dispensing of the sheet material 508 from the aperture 506 is facilitated, maximising convenience for the user.

Further, when the lid portion 504 is in the closed position, the distal end 598 of the first semi-hemispherical shaped section 588 may be in sealing contact with the distal end 599 of the second semi-hemispherical shaped section 589. Advantageously, said semi-hemispherical shaped sections 588, 589 being in sealing contact when the lid portion 504 is in the closed position, means that the dispensing aperture 506 is sealed to the atmosphere. Therefore, said sealing contact ensures that, if the sheet material 508 therein were, for example, to also comprise a liquid, the loss of said liquid through evaporation would be reduced.

In this embodiment, the first and second elongations 587, 591, and the first and second semi-hemispherical shaped sections 588, 589 are integrally formed with the base portion 502. In alternative embodiments, these features may be manufactured as separate components and assembled with the base portion 502 in separate manufacturing steps. A sixth embodiment of the invention is shown in Figures 6a to 6f. Features corresponding to those of any of the previous embodiments have been given corresponding reference numbers, except with the prefix '6'. Only features that differ from those of the previous embodiments are discussed herein.

Referring to Figures 6a and 6b, a closure 600 for mounting on a container 610 is shown. The closure includes a base portion 602 and a lid portion 604. The base portion is shaped such that the circumference of an inner edge 620 of the base portion 602 defines an aperture 606 through which the interior of the container 610 can be accessed. The lid portion 604 is hingedly connected to the base portion 602, such that the lid 602 is movable between a closed position in which the aperture 606 is covered by the lid portion 604, and an open position in which the aperture 606 is exposed.

The container 610 is in the form of a substantially rigid tub which may be formed in any desired shape. In some embodiments, the container 610 may be configured to contain laundry tablets or capsules. In some embodiments the container 610 may be configured to contain any other desired material or objects.

As can be seen in Figures 6a to 6f, the container 610 includes a side wall 610a extending from a base 610b to an open mouth 610c of the container 610. A lip 610d extends from the mouth 610c of the container 610, initially in a direction away from the container, and then extending downwards in a direction towards the base 610b, terminating at a distal end 610e. In this way a hook-shaped lip is formed.

The lower surface of the base portion 602 of the closure 600 is shaped to define a channel 625 corresponding to the dimensions of the mouth 610c and lip 610d of the container, such that the channel 625 is configured to house the mouth 610c and lip 610d of the container 610 when the closure 600 is mounted on the container 610. An inner wall 625a of the channel 625 is provided with a projection 625b configured for snap fitting engagement with the distal end 610e of the lip of the container 610. In this way, the closure 600 can be securely mounted onto a container 610.

In the illustrated embodiment, the closure 600 and the container 610 are separate components configured such that the base portion 602 of the closure fits over and is secured to the container, as described above. In alternative embodiments, the container 610 and closure 610 are integrally formed as a single component.

In this embodiment, a single hinge 628 is integrally formed with the base and lid portions 602, 604 to couple the base portion 602 and the lid portion 604 together. The hinge 628 is configured to permit movement of the lid portion 602 between the open and closed positions.

As can be seen from Figure 6a, the container is substantially cuboid in shape. The side wall 610a extends from the base 610b such that a first external edge of the container mouth 610c, corresponding to the first external edges 632, 638 of the base and lid portions, is substantially straight. The hinge 628 is provided substantially parallel to this straight edge. In the illustrated embodiment, the first external edge lies along the long axis of the cuboid. A second external edge of the container mouth 610c, corresponding to the second external edge 650 of the base portion 602, and providing opposed to the first external edge, is substantially curved. The base portion 602 and lid portion correspond in shape to that of the mouth of the container 610. However, it will be appreciated that any shape or configuration of container may be used.

With reference to Figures 6a and 6b, identical first, second, third and fourth projections 634 are arranged adjacent and at positions along the length of the hinge 628. Said projections 634 project substantially orthogonally from the lower surface 612 of the lid portion 604 along the first external edge 638 of the lid portion, adjacent the hinge 628. Identical first, second, third and fourth recessed portions 636 are located along a first external edge 632 of the base portion 602. The locations of said recessed portions 636 are arranged to correspond to those of the projections 634 of the lid 602. As can be seen in Figure 6f, in this embodiment, the recessed portions 634 are defined by an opening in an upper surface 626 of the base portion 602 at a location corresponding to that of the projections 634 of the lid 602.

Referring to Figures 6d to 6f, when the lid portion 604 is moved into the closed position, the first, second, third and fourth projections 634 engage the respective recessed portion 636. Specifically, in this embodiment, the first, second, third and fourth projections 634 pass through the opening 637 in the upper surface 626 of the base portion 602 such that an outer surface 641 of the first, second, third and fourth projections 634 is brought into contact with an internal surface 643 of the base portion 602. This results in elastic deformation of the internal surface 643 adjacent each projection 634 when the lid portion 604 is in the closed position.

When elastically deformed, the internal surface 643 adjacent each projection 634 stores potential energy (see Figure 6d). Upon the lid portion 604 being moved from the closed position to the open position, the internal surfaces 643 adjacent each projection 634 return to their pre-deformation dimensions, transferring said stored energy into movement of the lid portion 604 (as indicated by the arrow in Figure 6e). The lid portion 604 is therefore not only opened more easily, but advantageously reduced contact between the user and the lid portion is possible, which may be ideal when cleaning products are contained in the container 610.

Locating the projections 634 and the recessed portions 636 in close proximity to the hinge 628 also acts to maximise the transfer of stored energy to the lid portion 604. Advantageously, this further facilitates movement of the lid portion 604 from the closed position to the open position.

As is apparent from Figure 6a, the lid portion 604 of the closure 600 is retained in the closed position by a latching mechanism. The second external edge 646 of the lid portion 604 comprises a pair of latches 644. Said latches 644 are in the form of a recess comprising a lip 644a, integrally formed with the lid portion 604. Said latches 644 are provided at said second external edge 646 of the lid portion 604 opposing the first external edge 638, to which the hinge 628 is fixedly connected. The latches 644 project in a direction parallel to the lower surface 612 of the lid portion 604 towards a pair of corresponding catches 648. Each of said catches 648 is provided by a respective protrusion 648a (or in some embodiments the same protrusion) extending from the inner edge 620 of the base portion 602.

When the lid portion 604 is in the closed position, the lid portion 604 is releasably retained in the closed position by virtue of a snap-fit engagement between the latches 644 and the corresponding catches 648. In alternative embodiments, said engagement may be an interference fit resulting from frictional forces between an external surface of the lid portion 604 and an internal surface of the base portion 602. Advantageously, this prevents the lid portion 604 from moving into the open position and exposing the aperture 606 at an undesirable time.

The base portion also has a pair of release buttons 652, located along the second external edge 650 of the base portion 602, in close proximity of the respective catches 648. In this embodiment, each of said release buttons 652 is in the form of a depression in an upper surface of the base portion 602.

When the lid portion 604 is in the closed position, the application of pressure upon said release buttons 652 (see Figure 6h), for example from a user's finger, acts to elastically deform the base portion 602 in the vicinity of the release buttons 652 such that the protrusions 648a of the respective catches 648 are pushed past the lip 644a of the respective latch 644 in a direction towards the base 610a of the container 610 (see Figure 6i). In this way the catches 648 are moved out of engagement with the respective latch 644. Consequently, the lid portion 604 is released such that it is free to move into the open position (see Figure 6j).

In this embodiment, the latches 644, and the opposing catches 648 and the release buttons 652 are integrally formed with the lid portion 604 and the base portion 602 respectively. Advantageously, this configuration not only simplifies the form of these features as far as possible, but also simplifies the manufacturing process, allowing the said features to be formed in the same manufacturing step as the lid portion 604 and base portion 602. In alternative embodiments, the latch 644, and the opposing catches 648 and the release buttons 652 may be manufactured as separate components, and assembled with the lid portion 604 and the base portion 602 in separate manufacturing steps.

In alternative embodiments, any suitable latching mechanism may be used, for example, any of the latching mechanisms described in relation to any of the embodiments disclosed herein may be applied to this sixth embodiment. Alternatively, any other suitable latching mechanism may be used. A seventh embodiment of the invention is shown in Figures 7a to 7f. Features corresponding to those of any of the previous embodiments have been given corresponding reference numbers, except with the prefix '7'. Only features that differ from those of the previous embodiments are discussed herein.

Referring to Figures 7a and 7b, a closure 700 is shown for mounting on a container 710. The closure includes a base portion 702 and a lid portion 704. With reference to Figures 7e and 7f, the closure 700 and container 710 are, in this embodiment, formed of separate components configured such that the closure 700, in particular the base portion 702 of the closure 700, can be mounted on the container 710. In some embodiments, the closure 700 is secured to the container 710 via a snap-fit mechanism, for example, similar to that described in relation to the sixth embodiment. Alternatively any other suitable means of mounting may be used, for example, the closure and container may be configured for an interference fit arrangement. Alternatively, the closure may be glued onto the container.

In alternative embodiments, the base portion of the closure and the container are integrally formed as a single component.

The base portion 702 of the closure 700 is shaped to define a plurality of apertures 706 (two apertures in the embodiment shown in Figure 7b) through which the contents of the container may be accessed. The lid portion 704 is hingedly connected to the base portion 702, such that the lid 702 is movable between a closed position in which the apertures 706 are covered by the lid portion 704, and an open position in which the apertures 706 are exposed.

The container 710 is in the form of a substantially rigid tub which may be formed in any desired shape or size depending on requirements. In this embodiment, the container is substantially cuboid in shape and the closure is configured such that the axis of the hinge 728 is provided substantially parallel to the long axis of the cuboid. The base portion 702 corresponds in shape to the mouth of the container 610. In this embodiment, the lid portion is substantially oval in shape and the base portion 602 comprises a correspondingly formed recess 702a to receive the lid portion 604 when the lid is in the closed position.

With reference to Figures 7e and 7f in particular, the lid portion 704 and the base portion 702 of the closure 700 are separate components coupled together via a hinge 728. With particular reference to Figures 7e and 7f, in this embodiment, the base portion 702 has a transverse recess 764. Said recess 764 is located adjacent the hinge 728, centrally with respect to the length of the hinge 728. The recess 724 is configured to house a first end 766a of a resilient element 766 which, in this embodiment, is a piece of a Silicone material. In alternative embodiments, any suitably resilient material may be used, for example, a natural or synthetic rubber, an elastomer, and/or any other suitable elastic material. In alternative embodiments, other material demonstrating the required mechanical properties may be used.

The lid portion 704 includes a housing 765 located adjacent the hinge 728 and centrally with respect to the length of the hinge 728 such that it is arranged to house a second end 766b of the resilient element 766. The resilient element 766 further includes a projection 766c configured to abut the edge of the housing 765 proximal the hinge 728 such that the resilient element is retained in position in the recess 764.

The resilient element 766 is configured to elastically deform upon the application of stress. When the lid portion 704 is moved into the closed position, the resilient element 766 is compressed between the lid and the base portions 704, 702 (see Figure 7e). This results in the elastic deformation of the resilient element 766 when the lid portion 204 is in the closed position.

When elastically deformed, the resilient element 766 stores potential energy. Upon the lid portion 704 being moved from the closed position to the open position, the resilient element 766 returns to its pre-deformation dimensions, transferring said stored energy into movement of the lid portion 704. The lid portion 704 is thus not only opened more easily, but advantageously reduced contact between the user and the lid portion 704 is possible, which may be ideal when the container comprises sheet material which is, for example, cleaning or baby wipes.

The second external edge 746 of the lid portion 704 has a latch 744, similar to that described in relation to Figures 4a to 4f. The latch projects in a direction parallel to the lower surface 712 of the lid portion 704 towards a corresponding latch (not shown) provided on the base portion 702. The base portion 702 also has a release button 752, again similar to that described in relation to Figures 4a to 4f, located along the second external edge 750 of the base portion 704, in close proximity to the catch. The latch 744, catch and release button 752 operate as a latching mechanism in the manner previously described in relation to the embodiment illustrated in Figures 4a to 4f.

It will be appreciated that the resilient element 766 described in relation to the seventh embodiment may also be applied to any of the hinge mechanisms described herein, for example, those described in relation to embodiments 1 to 6. Similarly, any of the mechanisms that facilitate opening of the lid and any of the latch mechanisms described in relation to the embodiments 1-6 described herein may also be applied to the closure of the seventh embodiment.

Whilst the mechanisms that facilitate opening of the lid of the closures and the latching mechanisms described in relation to the sixth and seventh embodiments are shown in relation to a substantially rigid tub-like container, it will be appreciated that a closure having such a mechanisms may be applied to any form of container. For example, these mechanisms can be applied to a closure for a pouch or bag-type container as shown relation to embodiments 1 to 5. Similarly, any of such mechanisms or features described in relation to embodiments 1 to 5 are equally applicable in the case where the container is of more rigid construction, for example the tub-like container of the sixth or seventh embodiment.

It will be appreciated that the resilient hinge and latch mechanisms described herein may be applied to any size and shape of container.

As will be understood from the foregoing, closures can be configured for mounting onto a container, for example by means of a snap-fit engagement, an interference fit, application of an adhesive, or other suitable means. In some embodiments, the closures disclosed herein may be integral with container. Further, it will be appreciated that the closures described herein may be formed of separate lid and base portions. Alternatively the lid and base portions may be formed as a single component.

Throughout the description and claims of this specification, the words "comprise" and "contain" and variations of the word, for example "comprising" and "comprises", means "including, but not limited to", and it is not intended to (and does not) exclude other moieties, components, integers or steps.

Throughout the description and claims of this specification, the singular encompasses the plural unless the context otherwise requires. In particular, where the indefinite article is used, the specification is to be understood as contemplating plurality as well as singularity, unless the context requires otherwise.

Features, integers, characteristics or compounds described in conjunction with a particular aspect, embodiment or example of the invention are to be understood as be applicable to any other aspect, embodiment or example described herein unless incompatible therewith.

Claims

1. A container comprising an aperture for dispensing sheet material and a closure for said aperture, said closure comprising: a base portion arranged adjacent the aperture, a lid portion hingedly connected to the base portion and configured to move between an open position and a closed position, and a latching mechanism for releasably securing the lid portion in the closed position; wherein the closure further comprises a resilient element located between the base portion and the lid portion, and wherein the resilient element is arranged and configured to deform and store energy upon movement of the lid portion into the closed position, and to transfer stored energy to the lid portion upon the lid portion being de-latched from the closed position.

2. The container of claim 1, wherein the resilient element is configured to be elastically deformed when the lid portion is in the closed position.

3. The container of claim 1 or claim 2, wherein the resilient element is in an unstressed condition when the lid portion is in the open position.

4. The container of any of claims 1 to 3, wherein the lid portion is connected to the base portion by at least one hinge.

5. The container of claim 4, wherein the at least one hinge is integrally formed with the lid portion and the base portion.

6. The container of any of claims 1 to 5, wherein the resilient element is located in close proximity to the hinged connection between the lid portion and the base portion.

7. The container of any of any preceding claim, wherein the resilient element comprises a spring.

8. The container of claim 7, wherein the spring is integrated with the hinged connection between the lid portion and the base portion.

9. The container of claim 7 or claim 8, wherein the spring is substantially s-shaped.

10. The container of any of claims 7 to 9, wherein the spring comprises a section of metallic material.

11. The container of any of claims 1 to 6, wherein the resilient element comprises a section of elastomeric material, for example a silicone material.

12. The container according to any preceding claim, wherein the resilient element comprises a first end, which is coupled to the base portion, and a second free end distal the first end.

13. The container of any preceding claim, wherein the latching arrangement comprises a releasable inter-digitation between the lid portion and the base portion.

14. The container of claim 13, wherein said releasable inter-digitation comprises a snap-fitting arrangement between the lid portion and the base portion.

15. The container of any preceding claim, wherein the latching arrangement comprises the lid portion having a protrusion and the base portion having a recess, or the base portion having a protrusion and the lid portion having a recess, wherein the protrusion is releasably secured within the recess when the lid portion is in the closed position.

16. The container of claim 15, wherein the protrusion is releasably secured within the recess by virtue of an interference fit.

17. The container of any preceding claim, wherein the base portion defines an annulus for said aperture.

18. A container comprising an aperture for dispensing sheet material and a closure for said aperture, said closure comprising: a base portion arranged adjacent the aperture, a lid portion hingedly connected to the base portion and configured to move between an open position and a closed position, and a latching mechanism for releasably securing the lid portion in the closed position; wherein the closure is configured to store energy upon movement of the lid portion into the closed position, and to transfer stored energy to the lid portion upon the lid portion being de-latched from the closed position.

19. The container of claim 18 wherein the lid portion and the base portion are configured to resiliently cooperate to store energy upon movement of the lid portion into the closed position, and to transfer stored energy to the lid portion upon the lid portion being de-latched from the closed position.

20. A container of claim 18 or 19, wherein the closure comprises at least one resilient region and at least one projection, wherein the at least one resilient region of the closure is deformed against the at least one projection, upon the lid portion being moved into the closed position.

21. The container of claim 20, wherein the lid portion comprises the at least one resilient region, and the base portion comprises the at least one projection, wherein the at least one resilient region of the lid portion is deformed against the at least one projection, upon the lid portion being moved into the closed position.

22. The container of claim 21, wherein the at least one resilient region is integrally formed with the lid portion.

23. The container of claim 22, wherein the at least one resilient region is configured to deform against the at least one projection and store energy when the lid portion is moved into the closed position, and to transfer said stored energy to the lid portion upon the lid portion being de-latched from the closed position.

24. The container of claim 23, wherein the at least one projection is integrally formed with the base portion.

25. The container of claim 20, wherein the base portion comprises at least one resilient region, and the lid portion comprises at least one projection, wherein the at least one resilient region of the base portion is deformed against the at least one projection, upon the lid portion being moved into the closed position.

26. The container of claim 25, wherein the at least one resilient region is integrally formed with the base portion.

27. The container of claim 26, wherein the at least one resilient region is configured to deform against the at least one projection and store energy when the lid portion is moved into the closed position, and to transfer said stored energy to the lid portion upon the lid portion being de-latched from the closed position.

28. The container of claim 27, wherein the at least one projection is integrally formed with the lid portion.

29. The container of any of claims 18 to 28, the lid portion being connected to the base portion by at least one hinge, wherein the at least one resilient region comprises at least two resilient regions and/or the at least one hinge comprises at least two hinges, wherein the or each hinge and the or each resilient region are provided alternately.

30. The container of claim 29, wherein the or each resilient region is equidistant from the or each hinge.

31. The container of claim 18 or claim 19, wherein the base portion comprises a resilient lip, and wherein a lower surface of the lid portion comprises a ridge; further wherein the resilient lip is configured to deform against the ridge and store energy upon closure of the lid portion, and transfer said stored energy to the lid portion upon the lid portion being released from the closed position.

32. The container of claim 31, wherein the resilient lip extends around a circumference of an inner edge of the base portion.

33. The container of claim 31 or 32, wherein, when the lid portion is in the closed position, an outer surface of the ridge is in sealing contact with an inner surface of the resilient lip.

34. The container of any of claims 31 to 33, wherein the resilient lip is integrally formed with the base portion.

35. The container of any of claims 31 to 34, wherein the ridge is integrally formed with the lid portion.

36. The container of any of claims 18 to 35, wherein the latching arrangement comprises a releasable inter-digitation between the lid portion and the base portion.

37. The container of claim 36, wherein said releasable inter-digitation comprises a snap-fitting arrangement between the lid portion and the base portion.

38. The container of any of claims 18 to 37, wherein the latching arrangement comprises the lid portion having at least one protruding ridge, and the base portion having a recessed channel, wherein the at least one protruding ridge is releasably secured within the channel when the lid portion is in the closed position.

39. The container of claim 38, wherein the at least one protruding ridge is releasably secured within the channel by virtue of an interference fit.

40. The container of any of claims 31 to 37, wherein the latching arrangement comprises the lid portion having a protrusion, which is releasably secured against the resilient lip when the lid portion is in the closed position.

41. The container of claim 40, wherein the protrusion is releasably secured against an outer surface of the resilient lip by virtue of an interference fit.

42. The container of any of claims 18 to 41, wherein the base portion defines an annulus for said aperture.

43. A container comprising an aperture for dispensing sheet material and a closure for said aperture, said closure comprising: a base portion arranged adjacent the aperture, a lid portion hingedly connected to the base portion and configured to move between an open position and a closed position, and a latching mechanism for releasably securing the lid portion in the closed position; wherein the closure further comprises first and second resilient portions extending from opposing sides of the base portion towards the centre of the aperture, and wherein each resilient portion is configured to deform and store energy upon closure of the lid portion, and to transfer said stored energy to the lid portion upon the lid portion being released from the closed position.

44. The container of claim 43, wherein when the lid portion is in the closed position, a distal end of each resilient portion abuts a lower surface of the lid portion.

45. The container of claim 44, wherein when the lid portion is in the open position, a distal end of each resilient portion projects substantially away from the container.

46. The container of any of claims 43 to 45, wherein when the lid portion is in the closed position, the distal end of the first and second resilient portions abut one another.

47. The container of any of claims 43 to 46, wherein each resilient portion is integrally formed with the base portion.

48. The container of any of claims 43 to 47, wherein each resilient portion comprises at least one finger.

49. The container of claim 48, wherein each at least one finger is substantially curved along its length, such that the distal end of each finger projects substantially away from the container when the lid portion is in the open position.

50. The container of claim 48 or claim 49, wherein each finger further comprises at least one tooth arranged to project from an underside of each finger.

51. The container of claim 50, wherein the container further comprises sheet material to be dispensed via the aperture.

52. The container of claim 51, wherein each at least one tooth is arranged to move into contact with the sheet material when the lid portion is moved into the open position.

53. The container of any of claims 43 to 52, wherein each resilient portion comprises a substantially semi-hemispherical shaped section.

54. The container of any of claims 43 to 53, wherein when the lid portion is in the closed position, the distal ends of each resilient portion are in sealing contact with one another, substantially sealing the aperture.

55. The container of any of claims 43 to 54, wherein the latching arrangement comprises a releasable inter-digitation between the lid portion and the base portion.

56. The container of claim 55, wherein said releasable inter-digitation comprises a snap-fitting arrangement between the lid portion and the base portion.

57. The container of any of claims 43 to 56, wherein the latching arrangement comprises the lid portion having a first protrusion, and the base portion having a second protrusion, wherein the first protrusion is releasably secured against the second protrusion when the lid portion is in the closed position.

58. The container of claim 57, wherein the first protrusion is releasably secured against the second protrusion by virtue of an interference fit.

59. The container of any of claims 43 to 58, wherein the base portion defines an annulus for said aperture.

60. The container of any preceding claim, wherein the lid portion and the base portion are integrally formed, for example, by an injection moulding process.

61. The container of any preceding claim, wherein the latching arrangement further comprises a release button, configured for activation to de-latch the lid portion from the closed position.

62. The container of claim 61, wherein the release button further comprises a lock, movable between a locked position, wherein activation of the release button is prevented, and an unlocked position, wherein activation of the release button is permitted.

63. The container of claim 62, wherein the lock comprises a cover, said cover substantially enclosing the release button, when the lock is in the locked position.

64. The container of claim 63, wherein the cover is integrally formed with the base portion.

65. A closure for mounting on a container having a dispensing aperture, said closure comprising: a base portion configured for mounting the closure on a container, a lid portion hingedly connected to the base portion and configured to move between an open position and a closed position, and a latching mechanism for releasably securing the lid portion in the closed position; wherein the closure further comprises a resilient element located between the base portion and the lid portion, and wherein the resilient element is arranged and configured to deform and store energy upon movement of the lid portion into the closed position, and to transfer stored energy to the lid portion upon the lid portion being de-latched from the closed position.

66. A closure for mounting on a container having a dispensing aperture, said closure comprising: a base portion configured for mounting the closure on a container, a lid portion hingedly connected to the base portion and configured to move between an open position and a closed position, and a latching mechanism for releasably securing the lid portion in the closed position; wherein the closure is configured to store energy upon movement of the lid portion into the closed position, and to transfer stored energy to the lid portion upon the lid portion being de-latched from the closed position.

67. A closure for mounting on a container having a dispensing aperture, said closure comprising: a base portion configured for mounting the closure on a container, a lid portion hingedly connected to the base portion and configured to move between an open position and a closed position, and a latching mechanism for releasably securing the lid portion in the closed position; wherein the closure further comprises first and second resilient portions extending from opposing sides of the base portion towards the centre of the aperture, and wherein each resilient portion is configured to deform and store energy upon closure of the lid portion, and to transfer said stored energy to the lid portion upon the lid portion being released from the closed position.

68. A closure for mounting on a container, said closure comprising: a base portion configured for mounting the closure on a container and defining a dispensing aperture, a lid portion hingedly connected to the base portion and configured to move between an open position and a closed position, and a latching mechanism for releasably securing the lid portion in the closed position; wherein the closure further comprises a resilient element located between the base portion and the lid portion, and wherein the resilient element is arranged and configured to deform and store energy upon movement of the lid portion into the closed position, and to transfer stored energy to the lid portion upon the lid portion being de-latched from the closed position.

69. A closure for mounting on a container, said closure comprising: a base portion configured for mounting the closure on a container and defining a dispensing aperture, a lid portion hingedly connected to the base portion and configured to move between an open position and a closed position, and a latching mechanism for releasably securing the lid portion in the closed position; wherein the closure is configured to store energy upon movement of the lid portion into the closed position, and to transfer stored energy to the lid portion upon the lid portion being de-latched from the closed position.

70. A closure for mounting on a container, said closure comprising: a base portion configured for mounting the closure on a container and defining a dispensing aperture, a lid portion hingedly connected to the base portion and configured to move between an open position and a closed position, and a latching mechanism for releasably securing the lid portion in the closed position; wherein the closure further comprises first and second resilient portions extending from opposing sides of the base portion towards the centre of the aperture, and wherein each resilient portion is configured to deform and store energy upon closure of the lid portion, and to transfer said stored energy to the lid portion upon the lid portion being released from the closed position.

71. A container constructed and arranged substantially as described herein and/or with reference to any one of Figures la-7f.

72. A closure constructed and arranged substantially as described herein and/or with reference to any one of Figures la-7f.