The present invention relates generally to a dispensing closure for use with a container of a fluent substance.
Closures are employed to selectively prevent or permit communication of a substance between the interior and the exterior of a container (e.g., flexible pouch, rigid bottle, machine, dispensing equipment, containment system, etc.) through an opening in the container. Various fluent and non-fluent substances (including lotions, creams, food items, granules, liquids, powders, small articles, etc.) may be packaged in a container. A typical closure includes a (1) body (e.g., screw or snap-fit base, pouch fitment, structure, etc.) located at an opening to the container interior, and (2) a closing element (e.g., a lid, cover, overcap, etc.).
The closure body can typically be either (1) a separate structure that (a) can be attached at such a container opening, and (b) defines at least one access passage through the body for communicating through such a container opening with the interior of such a container, or (2) an integral structure that is a unitary portion of such a container and that defines at least one access passage through the integral structure such that the access passage functions as the opening, per se, to the container.
The closing element typically accommodates movement relative to the body access passage between (1) a closed position occluding the access passage, and (2) an open position at least partially exposing the access passage. Some closures may include additional elements (e.g., tamper-evident features, silicone valves, locking elements, seals, etc.).
A closure specifically designed for dispensing a fluent substance may be described as a dispensing closure. Various fluent materials or substances (including oils, lotions, creams, gels, liquids, food items, granules, powders, etc.) may be packaged in a rigid, flexible, or collapsible container having a dispensing closure that can be opened and closed. A flexible container may be pressurized by a user to force the fluent substance from the container and through the closure body to dispense the fluent substance at a target region or onto a target surface area. The container with the closure mounted thereon, and the contents stored therein, may be characterized as a “package.”
A dispensing closure may provide an initial hermetic seal and/or may provide an initial tamper-evidenc for indicating to a user that the closure integrity has been compromised. One such type of closure includes a body having a discharge end defining at least part of the access passage (which could be, for example, a discharge flow passage) that is initially sealed closed with a separable membrane. The discharge end of the body may further be covered with a closing element that is a cap or lid that can be removed, or moved away, from the discharge end so as to “open” the discharge end and allow access to the separable membrane. Typically, a separation member, such as a pull tab or pull ring, extends from the membrane. The pull tab or ring projects above the membrane. The user initially grasps the pull tab or ring to pull the membrane so as to separate the membrane from the body discharge end at the access passage to establish communication between the exterior ambient environment and the interior of the container or other system to which the closure is mounted. A frangible connection or tear path defines the line of separation between the membrane and the remaining portion of the closure body.
The inventors of the present invention have determined that it would be desirable to provide, at least for some applications, an improved dispensing closure that includes a separable membrane located within a relatively smaller dispensing orifice that exhibits an improved visual appearance to a user.
The inventors of the present invention have also determined that it would be desirable to provide an improved dispensing closure with a separable membrane exhibiting improved performance in separating from the remainder of the closure body and/or exhibiting a decreased force required by a user to initiate the tear or separation of the membrane from the remainder of the closure body.
The inventors of the present invention have also found that it would be desirable to provide, at least for some applications, an improved dispensing closure that can be manufactured and/or assembled at a relatively low cost, and can accommodate manufacture by means of efficient, high-speed, large-volume techniques, and that can facilitate the minimization of plastic part weight.
The inventors of the present invention have discovered how to provide such an improved dispensing closure that includes novel, advantageous features not heretofore taught or contemplated by the prior art, and which can accommodate designs having one or more of the above-discussed benefits or features.
According to broad aspects of one form of the present invention, a dispensing closure is provided for use in dispensing a substance that may be stored within an interior of a container. The closure defines a central axis extending inwardly toward the container interior and outwardly away from the container interior and includes a first body for being located at an opening of a container. The first body has a first peripheral wall and a membrane that is connected to the first peripheral wall to initially occlude access to the interior of the container. The membrane further includes a separation member that accommodates engagement by a user to separate the membrane from the first peripheral wall to permit access to the interior of the container. The membrane has an annular peripheral portion adjacent the first peripheral wall that slopes axially outwardly along the central axis in a radial direction, moving away from the first peripheral wall toward the central axis.
In one form of the present invention, the first body includes a second peripheral wall connected to, and surrounding, the first peripheral wall. The first and second peripheral walls function to receive a portion of the container to secure the first body at the opening of the container.
In another form of the present invention, the separation member includes at least one stem extending axially outwardly from the membrane and a grippable ring extending laterally from the stem.
In yet another form of the present invention, the membrane includes a concave, central portion that slopes axially inwardly from the annular peripheral portion.
According to another form of the present invention, the closure further includes a second body for surrounding at least a portion of the first body and which defines a dispensing orifice. In one preferred form, the second body includes a top deck and a pair of concentric walls extending axially inwardly from the top deck toward the membrane. In another preferred form of the present invention, one of the pair of concentric walls engages the first peripheral wall of the first body, and the other one of the pair of concentric walls is located above the annular peripheral portion of the membrane when the first and second bodies are in an assembled configuration on a container which would be encountered by a user of the closure. Still preferably, at least one of the pair of concentric walls conceals the connection of the annular peripheral portion to the first peripheral wall of the first body.
According to yet another form of the present invention, the membrane defines a first diameter at the connection between the annular peripheral portion and the first peripheral wall, and the dispensing orifice defines a second diameter that is smaller than the first diameter, both diameters being measured in a plane that is normal to the central axis of the closure.
According to another aspect of the present invention, the second body includes a top deck and a skirt which extends downwardly from the top deck for surrounding a portion of the container. The second body further includes a lid rotatably connected to the top deck.
According to another preferred form of the present invention, the second body includes a pour lip extending laterally and axially outwardly around the dispensing orifice and defining a pour path. Advantageously, the separation member may be asymmetric relative to a plane extending through said central axis and the pour path.
In one form of the present invention, the second body includes means for being non-removably secured with the first body at an opening of the container. Preferably, the means include a flexible flange or band.
In still another form of the present invention, the dispensing closure, including the first and second bodies, is provided in combination with a container of a fluent substance, wherein the closure, container, and the fluent substance together define a package.
In yet another form of the present invention, the membrane includes at least one bend point located at an axially outermost end of the peripheral portion for encouraging folding of the membrane.
According to another preferred form of the present invention, the second body includes a top deck having a flexible seal extending axially inwardly therefrom for sealing against the first body.
In one form of the present invention, the second body includes a pour lip that is symmetric about the central axis.
According to another broad aspect of one form of the present invention, a dispensing closure is provided for use in dispensing a substance that may be stored within an interior of a container. The closure includes a first body having a first peripheral wall for being located adjacent the container opening, a membrane for being located across the container opening, and a frangible connection connecting the membrane with the first peripheral wall to initially occlude access to the interior of the container. The membrane further includes a separation member that accommodates engagement by a user to separate the membrane from the first peripheral wall to permit access to the interior of the container. The membrane has a peripheral portion that extends from the frangible connection in a direction toward the exterior of the closure (away from the interior of the container).
It should be appreciated that the invention may include any or all of the above-described features, include only one of the above-described features, more than one of the above-described features, and any combination of the above-described features. Furthermore, other objects, features and advantages of the invention will become apparent from a review of the entire specification including the appended claims and drawings.
While this invention is susceptible of embodiment in many different forms, this specification and the accompanying drawings disclose only specific forms as examples of the invention. The invention is not intended to be limited to the embodiments so described, and the scope of the invention will be pointed out in the appended claims.
For ease of description, many figures illustrating the invention show embodiments of a dispensing closure (or simply referred to herein as a “closure”) 40 in the typical orientation that the closure 40 would have when located at the opening of a container 44 such as an upright bottle, and terms such as “inward”, “outward”, “upper”, “lower”, “axial”, “radial”, “lateral”, etc., are used with reference to this orientation. The term “axially inward” is to be understood as in the direction along a central axis “A” extending vertically through the center of the separable membrane of the closure 40, toward the interior of the container 44 when the closure 40 is mounted atop the opening of the container 44, as is illustrated in
The dispensing closure of this invention is especially suitable for use with a variety of conventional or special containers, the details of which, although not fully illustrated or described, would be apparent to those having skill in the art and an understanding of such containers. The particular container illustrated is not intended to limit the present invention. It will also be understood by those of ordinary skill that novel and non-obvious inventive aspects are embodied in the described closure alone.
The dispensing closure described herein is especially suitable for use in dispensing fluent substances. Such dispensed fluent substances may be, for example, food additives, a personal care product, an industrial product, a household product, or other types of products. Such substances may be for internal or external use by humans or animals, or for other uses (e.g., activities involving medicine, commercial or household maintenance, agriculture, manufacturing, etc.).
The illustrated preferred embodiment of the dispensing closure 40 of the present invention has the form of an assembly of parts or articles that are configured to be (i) selectively placed or installed at an opening of a container (such as the container 44 in
It will be understood that the container 44 may be any conventional type, such as a collapsible, flexible pouch, or may be a generally rigid bottle that has somewhat flexible, resilient walls. The container 44, or a portion thereof, may be made from a material suitable for the intended application. For example, the container may be a pouch made from a thin, flexible material (wherein such a material could be a polyethylene terephthalate (PET) film or a polyethylene film and/or an aluminum foil). Alternatively, a more rigid container (e.g., a bottle) could be made from a thicker, less flexible material such as molded polyethylene, polypropylene, polyethylene terephthalate, polyvinylchloride, glass, metal, or other materials.
It is contemplated that typically, after the closure manufacturer would make the dispensing closure 40 (e.g., by molding its components from a thermoplastic polymer or polymers), the manufacturer will then ship the closure 40 to a filler facility at another location where the container 44 would be filled with a product, assembled with the closure 40, and sealed in the form of a package that would be encountered by a customer or user.
With reference to the accompanying
Still referring to
With reference again to
By providing the separation member 62 in the form of a pair of stems 64 and a grippable portion 66, a user may grip and remove the membrane 60 more easily. It will be understood, however, that in the broadest concept of the present invention, the separation member 62 need not have a discernible stem 64 or grippable portion 66. The separation member 62 may be of any suitable geometry that will allow a user to separate the membrane 60 from the closure body 24 by gripping the separation member 62 between user's thumb and finger, or by gripping or hooking it with a tool.
As further illustrated in
Referring next to
It will be understood that while the membrane 60 in the illustrated, preferred embodiment of the closure 40 is generally disc shaped, the membrane 60 may have other non-circular shapes for occluding a non-circular opening defined by the wall 56.
With reference now to
Referring now to
In some non-preferred forms of the invention, not illustrated, the pair of concentric walls 94 and 96 may have the form of a unitary annular wall that functions to conceal any such residual product from a user looking through the dispensing orifice 88. Such a design would not be preferred due to increased part weight and plastic resin used, compared to the illustrated preferred embodiment. In other forms, the concentric walls 94 and 96 could be connected by a transverse wall located proximate to the membrane 60, and would have an opening above such a transverse wall at the deck 92 for molding.
Referring again to
Referring next to
With reference now to
Referring still to
The first body 54 and second body 55 are preferably formed or molded from a suitable thermoplastic material such as polypropylene or polyethylene. Other materials may be employed instead. It will be understood that in alternative designs (not illustrated), one or more of the basic components or sub-components may be separately or sequentially formed or molded (such as through bi-injection molding). Alternatively, in a non-preferred embodiment, the basic components may be molded initially as one connected, unitary structure, and then broken apart, and then re-assembled into an operative combination or assembly.
One method of assembling the closure 40 with a container 44 of a fluent substance to form a package that would be encountered by a customer or user is next discussed. It will be understood that the method of assembly described herein is illustrative only, and there may be other methods of assembling the package. The closure 40, including the first body 54 and the second body 55, are preferably molded as separate articles of manufacture and shipped to a filler facility. The plug seal 108 of the lid 100 is then placed into a sealing, frictional engagement with the dispensing orifice 88 of the second body 55 prior to shipping. The filler facility then fills the interior of the container 44 with a pre-determined amount or dose of a substance to be dispensed (not illustrated). The first and second peripheral walls 56 and 58 of the first body 54 are axially installed around the neck 46 of the container 44 such that the bead 59 of the first body 54 engages and slips beneath the bead 45 of the container 44, and the first peripheral wall 56 seals against the opening of the container 44.
The overclosure or second body 55 is then axially installed around the top end of the container 44 such that the non-removable attachment flange 98 slips beneath and engages the underside of the flange 99 on the neck 46 of the container 44 such that the first concentric wall 94 seals against the first body 54 and the second concentric wall 96 is positioned axially above the sloping peripheral portion 68 of the membrane 60. Advantageously, the present invention design of the closure 40 does not require that the first and second bodies 54 and 55, respectively, be oriented in any specific rotational arrangement. Accordingly, the separation member 62 may be asymmetric relative to a vertical plane extending through the central axis “A” and the pour path “PP”, reducing the cost and complexity of assembling the closure 40.
The filled container 44 with the closure 40 installed in the closed position is thus provided to the consumer in the form a completed package.
The detailed operation and function of the closure 40 will next be described. Typically, a user, such as a customer, will encounter the closure 40 installed upon the fluent substance container 44 as a package with the lid 100 in the closed position (not illustrated). The user would open the lid 100 by rotating it relative to the top deck 92 about the hinge 104 into an open position to disengage the plug seal 108 from the dispensing orifice 88.
With reference to
The user may grasp and tilt the container 44, and pour an amount of fluent substance from the interior of the container 44 through the exposed orifice 88 along the pour path “PP” defined by the pour lip 89.
After dispensing the fluent substance through the closure 40, the user may then return the lid 100 to its closed position by rotating the lid 100 about the hinge 104 relative to the top deck 92 such that the lid plug seal 108 re-seals around in the orifice 88.
A second embodiment of a closure 40A according to the present invention is illustrated in
Still referring to
A third embodiment of a closure 40B according to the present invention is illustrated in
Referring now to
Other configurations of the present invention are set forth in the claims.
Various modifications and alterations to this invention will become apparent to those skilled in the art without departing from the scope and spirit of this invention. Illustrative embodiments and examples of the system are provided as examples only and are not intended to limit the scope of the present invention.
The present application claims priority from U.S. Provisional Patent Application No. 63/228,388, filed on Aug. 2, 2021, the entire contents of which is incorporated herein by reference.
Filing Document | Filing Date | Country | Kind |
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PCT/US2022/038998 | 8/1/2022 | WO |
Number | Date | Country | |
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63228388 | Aug 2021 | US |