The present invention relates to a container fitment, specifically a container fitment comprising a dispensing orifice, articles of manufacture, and a method of making the same.
Non-pressurized containers have been traditionally equipped with a dispensing orifice situated somewhere on the container. Traditionally, to dispense a product from a non-pressurized container, the user simply turns the container upside down and lets gravity do the work. However, in order to dispense an effective amount (such as, a unit dose) of a shear-thinning structured liquid product (such as, an automatic dishwashing and/or laundry composition), the user must provide at least some shear, which is generally initiated by squeezing the inverted container. The contents are then “squeezed” out of the container until the receiving receptacle is filled.
In dispensing shear-thinning structured liquid products or compositions, a balance must be achieved between providing an adequate dispensing orifice diameter (e.g. to result in an effective dosing of a receptacle with the shear-thinning structured liquid product) and providing a suitable flow rate once dispensing is initiated. Impacting the dosing regime is the negative perception of product quality that is elicited by the user when the dispensing orifice provides for either too restricted a flow (e.g. user perceives that the product is too thick) or too large a flow (e.g. user perceives that the product is too thin and watery). Therefore, to provide the highest consumer satisfaction during dosing, the dispensing flow rate of a shear-thinning structured liquid product may be controlled by the size, shape, and configuration of the dispensing orifice on the container fitment.
If the diameter of the dispensing orifice is too small, then only a limited amount of product is dispensed (often less than the optimal dosage) due to the large amount of shear produced as it is squeezed out the dispensing orifice. If less than the optimal dosage is delivered to a receiving receptacle (such as, the automatic dispensing cup in an automatic dishwashing machine or washing machine), then incomplete cleaning of a soiled article may occur.
As the diameter of the dispensing orifice increases, the dispensing flow rate increases. While this is desirable up to a certain point, too large a diameter and the user may actually lose control of the amount being dispensed—causing the user to overfill the receiving receptacle. Too large a diameter makes it difficult for the user to stop the dispensing flow with adequate control of the amount and direction of the flow. This often creates an unwanted mess (e.g. overfilling). Another problem with the use of large diameter dispensing orifices is that during dispensing, the user may perceive, the shear-thinning structured liquid product to be too thin and watery. Marketing tests have shown that a thin or watery product is perceived as being of lesser quality than that of a thicker product.
Thus, the size, shape, and configuration of the dispensing orifice are directly related to the user's perception of product quality. Therefore, the search for an improved container fitment has continued.
It has been surprisingly found that the design of a container fitment containing a dispensing orifice, and optionally a dispensing ring, having an opening with a surface area opening being greater than or equal to that of a circle with a diameter of 55.4 mm provides adequate control of the dispensing of a shear-thinning structured liquid without the negative appearance of the product being too thin or watery. It has also been surprisingly found that after the receiving receptacle is filled to the manufacturer's recommended dose volume, providing a “beveled edge” on the inner sidewalls of the optional dispensing ring reduces the messiness associated with cessation of the dispensing flow. The beveled edge helps the user “cut off” the dispensing flow rate of the product, especially at the end of the dosing operation, where most messiness is observed. Thus, when dispensing a shear-thinning liquid product, the container fitment provides a user with an overall improvement of the aesthetic experience in proper dosing.
Such a container fitment could also be used with most any type of composition, including non-shear thinning liquids or powders in any type of suitable containers (e.g. single- and multiple-compartment containers). Thus, any suitable composition may be dispensed from any suitable container using the container fitment, described herein. Suitable compositions include, but are not limited to: pastes, creams, gels, liquids, liquigels, powders, and granules. Although the examples herein typically relate to dispensing of structured automatic dishwasher and laundry products and compositions, this type of container fitment could be useful for a wide range of applications, including the dispensing of the following compositions: hand dish-washing products, skin care and personal care products, and food products.
The present invention relates to a container fitment, specifically a container fitment comprising a dispensing orifice, an article of manufacture, and a method of making the same.
In one aspect of the invention a container fitment comprising an annular ring and a top panel is provided. The annular ring may comprise upper and lower terminal ends and an outer and inner sidewall. The inner sidewalls may comprise: (i) an attaching means for attaching the container fitment to the neck of a container opening; and (ii) a sealing means for sealing the container fitment to the neck of the container opening. The top panel may be positioned on the upper terminal end in a generally normal position to the terminal ends of the annular ring. The top panel may have a dispensing orifice located therein. The dispensing orifice may be non-circular in shape having a surface area opening from about 30 mm2 to about 175 mm2.
In another aspect of the invention, an article of manufacture is provided. The article of manufacture may comprise a kit comprising a container fitment, a container comprising a composition to be dispensed, and instructions for using the container fitment to dispense the composition. In another aspect of the invention, a method of manufacturing the container fitment, described herein, is provided. The method may comprise the step of forming a one-piece container fitment using plastic injection molding.
While the specification concludes with claims particularly pointing out and distinctly claiming the invention, it is believed that the present invention will be better understood from the following description taken in conjunction with the accompanying drawings in which:
The present invention relates to a container fitment comprising a dispensing orifice, an article of manufacturer, and a method of making the same. Generally, the container fitment may be independently attached to any suitable container by any suitable attaching means. Suitable attaching means include, but are not limited to: a snap lug arrangement, a screw threaded type arrangement, or combinations thereof. The container fitment may attach to right side up containers, as well as upside down containers, and is also useful for container openings with or without slit valves. The container fitment may also be provided as an integral part of a closure cap and/or sealing system for the container, especially one that provides for a fixed position or positive orientation closure cap, especially useful when the dispensing orifice in non-circular in shape. For example, the container fitment could be connected to the container via a flip cap or child resistant cap. Alternatively, the container fitment may be an integral part of the container itself.
The container fitment may also provide an access means whereby the container fitment may not be opened and exposure to the internal contents of the container achieved without exerting sufficient force to a portion of the container fitment. Thus, although the container fitment may not necessarily be child proof, the force required to remove it may provide some degree of resistance to child tampering and/or undesirable access to the contents of the container by children. The drawing and the shape of the container fitment and/or dispensing orifice and/or optional dispensing ring thereon may freely vary according to the required visual appearance of the finished shape of the container with which it is associated during the closing:of the container.
The container fitment may be made of any suitable material. Suitable materials include plastics. Suitable plastics include, but are not limited to: firm or rigid plastic materials, rubbery or flexible plastic materials, and combinations thereof. The container fitment may be provided as a one-piece article or a composite article. In one non-limiting embodiment, the container fitment may be made entirely of an elastically deformable or rubbery plastic material. In another non-limiting example, the majority of the container fitment itself may be made of an elastically deformable plastic material, but in this event it may be necessary to make certain that the portion where the attaching means is formed is not itself deformable. One solution is to utilize multiple-plastic injection molding systems, methods, and techniques, known in the art, to provide a single-piece container fitment having both flexible plastic components, and firm, deformable plastic components, alternatively rigid, non-deformable plastic components. Another solution to such an arrangement would be, for example, to prepare separately the attaching means (such as, a snap lug arrangement or a screw threaded type arrangement) itself and/or the dispensing ring of a more rigid or deformable, yet firm plastic material, alternatively a non-deformable plastic material, and to associate it with an elastically plastic deformable article to form the container fitment by well known processes. In this case the dispensing orifice may be melted, pressed, or cut out of the dispensing ring, if necessary.
The annular ring 3 further comprises an outer sidewall 9, and an inner sidewall (not shown). The lower terminal end 16 and an upper terminal end 10 define the outer sidewall 9. An optional transition element 18 may be connected to the top panel 8 and the annular ring 3 and is defined by the upper terminal end 10 of the outer wall 9 and outer terminal end 19 of the top panel 8. The optional transition element 18 may be; flat, curved, or rounded in shape.
The dispensing orifice 15 may be located ill any suitable location on the top panel 8. An optional dispensing ring 2 may also be provided. The dispensing orifice 15 and/or the optional dispensing ring 2, when present, may be located adjacent to one another. For example, the dispensing orifice 15 and/or the dispensing ring 2 may be centrally positioned on the top panel 8 such that an unobstructed passageway is created between the container opening (not shown) and the receiving receptacle to be filled.
The optional dispensing ring 2 may comprise an opening having the general shape of the dispensing orifice 15. The dispensing ring 2 comprises outer sidewalls 4, inner sidewalls 5, and optionally, beveled edges 6. The inner sidewalls 5 define a passageway or channel, which may be generally similar (or equal) in size, shape, or configuration to the size, shape, or configuration of the dispensing orifice 15. The passageway or channel (not shown) may be formed by the marriage of the dispensing ring 2 and the dispensing orifice which will provide direct communication with the contents of the container to the receiving receptacle during dispensing with little or no obstruction to the flow of the contents of the container from the container opening through the passageway or channel. The dispensing ring 2 may be act in combination with a closure cap (not shown) such as a flip-cap having a male member, wherein the dispensing ring 2 acts as the female member (not shown) to accept the male portion (not shown) of the closure cap (not shown) when tightly engaged (e.g. closed). The engagement thus provides a sealing means for sealing the contents of the container from the environment when in transport, storage, or not in use.
In some embodiments, the dispensing orifice 15 and/or dispensing ring 2 may comprise any shape that is non-circular, and has a point on it (i.e. two edges coming together to make a point). Suitable point-containing shapes include, but are not limited to: a 4-sided diamond (rhombus), a “Marquis” diamond (rhombus), a football (ellipse), triangle, rectangle, square, and combinations thereof. Point-containing shapes, especially like the 4-sided diamond shapes, allow the contents of the container, especially for liquids and gels, to be “cut off” at the end of the dosing, so that even when the contents appear to be coming out faster, the consumer does not experience increased messiness (e.g. dripping from the bottle) when the dosing is ceased. This added control provides a means to reduce the perception of a poor quality product (e.g. too “thin and watery”). The point-containing shape is also believed to act in concert with the beveled edge 6 to provide a “cutting edge” which helps promote the perception that the product is “pulled back” into the container at the end of the dosing. The cutting edge also appears to reduce the perception of messiness by the consumer at the cessation of dosing.
Any suitable surface area opening for the dispensing orifice 15 and/or dispensing ring 2 may be chosen to aid in the proper dosing of a receiving receptacle. Suitable surface areas openings include, but are not limited to surface areas openings from about 30 mm2 to about 175 mm2. In some non limiting embodiments, the surface area opening of the dispensing orifice 15 and/or dispensing ring 2 may be from about 30 mm2 to about 175 mm2, or from about 35 mm2 to about 175 mm2, or from about 40 mm2 to about 175 mm2, or from about 45 mm2 to about 175 mm2, or from about 50 mm2 to about 175 mm2, or from about 55 mm2 to about 175 mm2, or from about 60 mm2 to about 175 mm2, or from about 65 mm2 to about 175 mm2, or from about 70 mm2 to about 175 mm2, or from about 75 mm2 to about 175 mm2, or from about 80 mm2 to about 175 mm2, or from about 85 mm2 to about 175 mm2, or from about 90 mm2 to about 175 mm2, or from about 95 mm2 to about 175 mm2, or from about 100 mm2 to about 175 mm2, or from about 105 mm2 to about 175 mm2, or from about 110 mm2 to about 175 mm2, or from about 115 mm2 to about 175 mm2, or from about 120 mm2 to about 175 mm2, or from about 125 mm2 to about 175 mm2, or from about 130 mm2 to about 175 mm2, or from about 135 mm2 to about 175 mm2, or from about 140 mm2 to about 175 mm2, or from about 145 mm2 to about 175 mm2, or from about 150 mm2 to about 175 mm2, or from about 155 mm2 to about 175 mm2, or from about 160 mm2 to about 175 mm2, or from about 165 mm2 to about 175 mm2, or alternatively from about 170 mm2 to about 175 mm2.
Many shear-thinning structured liquids, however, are currently dosed from a container with a small, round, singular hole or orifice (e.g. often less than about 30 mm2) often providing the perception of too thick a product. In another non-limiting embodiment, a shear-thinning structured liquid may be dispensed from a container having a container fitment comprising a dispensing orifice 15 and/or dispensing ring 2 such that the surface area opening of the dispensing orifice 15 and/or dispensing ring 2 is greater than or equal to about 55.4 mm2, which corresponds to the surface area opening of a circle having a diameter of 8.4 mm.
The optional sealing surface 24 may be located on the innermost surface of the top panel 8. The sealing surface 24, when present, may comprise a compressible, flexible and/or deformable material such that when the neck of the container opening is compressed against the deformable material it forms a tight seal when the container fitment 1 is fully attached to the neck of the container by any suitable attaching means (not shown), the seal being a leak proof seal.
In addition to (or alternatively, instead of) the optional sealing surface 24, the container fitment 1 may comprise an optional compressible, thickened portion 26 (or seal bead) located on the inner sidewall 25, adjacent to the lower terminal end 16. The thickened portion 24 may comprise a compressible, flexible and/or deformable material. The thickened portion 24 may be an integral part of the attaching means (e.g. part of the threaded member 17). When the container fitment is container fitment is fully attached to the neck of the container opening by a suitable attaching means, the thickened portion is compressed, forming a tight seal between the compressed thickened portion and the neck of the container opening, the seal being a leak proof seal.
The optional beveled edge 6 on the dispensing ring 2 may act as a “cutting edge” to allow the consumer to reduce the messiness associated with the cessation of the dispensing flow, especially for dispensing liquids and gels, as discussed above. The angle between the surfaces of the beveled edge 6, when present, and the outer sidewall 4 may comprise any suitable acute angle. Suitable acute angles include, but are not limited to: less than about 45 degrees, or less than or equal to about 44 degrees, or less than or equal to about 42 degrees, or less than or equal to about 40 degrees, or less than or equal to about 38 degrees, or less than or equal to about 36 degrees, or less than or equal to about 34 degrees, or less than or equal to about 32 degrees, or less than or equal to about 30 degrees, or less than or equal to about 28 degrees, or less than or equal to about 26 degrees, or less than or equal to about 24 degrees, or less than or equal to about 22 degrees, or less than or equal to about 20 degrees, or less than or equal to about 18 degrees, or less than or equal to about 16 degrees, or less than or equal to about 14 degrees, or less than or equal to about 12 degrees, or less than or equal to about 12 degrees. In one non-limiting embodiment, an acute angle is formed between the surfaces of the beveled edge 6 and the outer sidewall 4 and comprises from about 10 degrees to less than 45 degrees, of alternatively, from about 20 degrees to about 30 degrees.
The container fitment may be packaged along with the container as an article of manufacture comprising a kit. The kit may include the container fitment, described herein, a container having a suitable composition stored therein, and instructions on the use of the container fitment during dispensing of the contents of any suitable container having any suitable composition in any suitable form. The container may have a single compartment or multiple compartments.
Alternatively, the instructions may provide for using the container fitment to dispense a shear-thinning structured liquid composition from any suitable container. Such instructions may include one or more of the following steps: (a) the user may hold the container between his thumb and fingers (not shown) in the upright position; (b) the user may turn the container upside down and exert an effective amount of force (e.g. by squeezing) to shear the shear-thinning structured liquid so that it dispenses from the container into a receiving receptacle (not shown); (c) as the shear-thinning structured liquid begins to flow through the dispensing orifice 15 and/or optional dispensing ring 2, the user may utilize one or more points of the point-containing dispensing orifice 15 and/or dispensing ring 2 shape (e.g. the four-sided diamond) to control the direction of the flow into the receiving receptacle; and (d) when the receiving receptacle begins to fill to the proper dosage volume, the user may move the container to the upright position, thereby engaging the cutting edge of the dispensing ring 2, if provided, so that the dispensing flow or stream of the product is cut off, which may help to reduce messiness (e.g. associated with unwanted drippings) once flow of shear-thinning structured liquid ceases.
The disclosure of all patents, patent applications (and any patents which issue thereon, as well as any corresponding published foreign patent applications), and publications mentioned throughout this description are hereby incorporated by reference herein. It is expressly not admitted, however, that any of the documents incorporated by reference herein teach or disclose the present invention.
It should be understood that every maximum numerical limitation given throughout this specification would include every lower numerical limitation, as if such lower numerical limitations were expressly written herein. Every minimum numerical limitation given throughout this specification will include every higher numerical limitation, as if such higher numerical limitations were expressly written herein. Every numerical range given throughout this specification will include every narrower numerical range that falls within such broader numerical range, as if such narrower numerical ranges were all expressly written herein.
While particular embodiments of the subject invention have been described, it will be obvious to those skilled in the art that various changes and modifications of the subject invention can be made without departing from the spirit and scope of the invention. In addition, while the present invention has been described in connection with certain specific embodiments thereof, it is to be understood that this is by way of illustration and not by way of limitation and the scope of the invention is defined by the appended claims which should be construed as broadly as the prior art will permit.
This application claims the benefit of U.S. Provisional Application No. 60/549,071, filed Mar. 1, 2004.
Number | Date | Country | |
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60549071 | Mar 2004 | US |