FIELD OF THE INVENTION

[0001] The present invention relates to comestible manufacturing methods and systems and more particularly, to a method and system for applying a releasing agent within a comestible manufacturing system.

BACKGROUND OF THE INVENTION

[0002] Typically, the process of making and packaging comestibles, such as a confection or chewing gum, is time-consuming and involves a significant amount of machinery. For example, the process of making and packing gum products can include mixing and producing a finished gum as a non-uniform output, extruding and forming the finished gum into loaves, conditioning the loaves of the finished gum, extruding the loaves into a continuous thin sheet of the finished gum, rolling the continuous sheet through a series of rollers to a uniform reduced thickness, scoring and dividing sheets into individual scored sheets, conditioning the individual sheets in a conditioning room, dividing sheets into gum pieces, and packaging the gum pieces. Such processes of making and packaging gum products are disclosed in U.S. Patent No. 6,254,373 assigned to the predecessor of interest of the present assignee, and U.S. Patent Application No. 15/352,1 10 assigned to the present assignee; the teachings and disclosures of which are hereby incorporated by reference in their entireties to the extent not inconsistent with the present disclosure.

[0003] During the process of making and packaging comestibles, the comestible may stick to one or more of the system components, such as the forming rollers or the cutting instruments for example. This sticking can result in an undesirable adhering of the comestible to the manufacturing components and harm the manufacturing. Such sticking may even require that the manufacturing system be stopped temporarily to lubricate the components or recalibrate the system. Powder dusting materials are commonly used as an anti-sticking agent during the formation of a comestible. However, powder dusting materials can accumulate over time, resulting in a buildup on either the product or the components of the manufacturing system. In addition, application of a powder dusting material requires significant clean up time when a line is changed over and often requires an expensive removal system.

[0004] The present invention is directed toward improvements and

advancements over such prior systems and methods of making and packaging gum products. BRIEF SUMMARY OF THE INVENTION

[0005] Disclosed is a method of manufacturing a comestible, the method including providing at least one manufacturing instrument configured to contact the comestible. A releasing agent is atomized and expelled from an expelling device.

Application of pressure to the releasing agent is unnecessary to achieve the atomizing. The atomized releasing agent is applied to either a surface of the at least one manufacturing instrument configured to contact the comestible or to a surface of the comestible.

[0006] Disclosed is another method of manufacturing a comestible, the method including providing at least one forming instrument configured to contact the comestible. An expelling device configured to expel an atomizing spray of a releasing agent at a velocity less than 35 ft/s is provided. The releasing agent is applied to a surface of either the at least one manufacturing instrument configured to contact the comestible or to a surface of the comestible.

[0007] Disclosed is another method of manufacturing a comestible, the method including providing at least one forming instrument configured to contact the comestible. An expelling device configured to expel a releasing agent is provided. The releasing agent includes a plurality of uniformly distributed droplets. The releasing agent is applied to a surface of either the at least one manufacturing instrument configured to contact the comestible, or to a surface of the comestible.

BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The accompanying drawings incorporated in and forming a part of the specification embodies several aspects of the present invention and, together with the description, serve to explain the principles of the invention. In the drawings:

[0009] FIG. 1 is a schematic diagram of a comestible manufacturing system including at least one expelling device according to an embodiment of the invention;

[0010] FIG. 2 is a schematic diagram of another a comestible manufacturing system including at least one expelling device according to an embodiment of the invention; and

[0011] FIG. 3 is a side view of an expelling device according to an embodiment of the invention. DETAILED DESCRIPTION OF THE INVENTION

[0012] The following disclosure will detail particular embodiments according to the present disclosure, which provide improvements for preventing a comestible material from sticking to one or more forming components (e.g. sizing components, cutting components, scoring components, etc.) during the manufacturing thereof. In one

embodiment, a system includes a set or pair of rollers for forming a comestible structure/mass into a continuous web or sheet having a desired thickness and a width, while imparting temperature control to the comestible at the same time. Rollers such as but not limited those described in United States Application No. 61/522,767, which is herein incorporated by reference in its entirety, are contemplated herein. Moving walls such as the moving walls described in United States Application No. 61/510,119, which is herein incorporated by reference in its entirety, are also contemplated.

[0013] The comestible included in the comestible mass and sheet discussed herein include any type of edible product, such as but not limited to chewing gum (at any stage including elastomer, partially finished base, finished chewing gum base, and finished chewing gum), confection (which may be synonymous with chewing gum and candy), sweet and savory biscuits and cakes, nuts, and grains. For ease of description, the comestible will be referred as chewing gum for the remainder of the description. Certain compositions of chewing gum may have a non-uniform texture and/or a multi-layered composition.

[0014] Further, the system can eliminate the need for powder dusting material.

By eliminating the use of dusting powders, a clean up process of the comestible

manufacturing line can be dramatically made easy, since a substantially large portion of residual mess requiring lengthy cleaning in conventional rolling and scoring lines is due to the use of powders and the large number of rollers. In addition, dusting powder can accumulate on the components of the system and/or the comestible, which may have an undesirable effect on the taste or quality of the comestible.

[0015] Referring now to FIGS. 1 and 2, exemplary systems for forming a chewing gum are illustrated. The comestible manufacturing systems 10 generally include a comestible mixing station 20 and a comestible forming or sizing station 30 that includes at least one pair of rollers 40. The system 10 may additionally include a further smoothing roller 80 located downstream from the comestible sizing station 30. The manufacturing systems 10 may also include a scoring roller 85 and cutting roller 90, as illustrated in the FIGS. [0016] In the manufacturing system 10 illustrated in FIG. 1, the comestible forming station 30 includes a hopper 35 arranged at an upstream or entry point thereof. The forming station 30 additionally includes a pair of rollers 40, which in this embodiment include an upper roller 45 and a lower roller 50. The rollers 45, 50 are externally driven, for example by an operably coupled motor (not shown). In an exemplary embodiment, each of the rollers 45, 50 is provided with a motor, such that the rotational speed of each of the rollers 45, 50 can be controlled independently.

[0017] The hopper 35 is disposed proximate the rollers 40, and may be used for upstream surge control, capacity and feed control. The hopper 35 constrains, accumulates, and feeds the comestible mass 15 supplied from the mixing station 20, into an inlet or gap region 55 generally between the pair of rollers 40.

[0018] The comestible mass 15 moves through the hopper 35, such as via gravity or with the assistance of guide rollers (not shown) disposed within the hopper 35. In the exemplary embodiment of Figure 1, as the comestible mass 15 exits the hopper output it is guided by the lower roller 50 toward the upper roller 45 and the gap 55 between the upper and lower rollers 45, 50. The counter rotating upper roller 45 and lower roller 50 pull the comestible mass 15 through the gap 55 between the pair of rollers 40 (also referred to as "forming rollers" or "sizing rollers" herein) to form and size the comestible mass 15 into the comestible sheet 25.

[0019] Upon exiting the gap 55 of the pair of rollers 40, the conveyor 75 moves the comestible sheet 25 having a final or substantially final thickness (of between about 0.3 mm to 10 mm for some sheet or slab forming systems) towards the smoothing roller 80, which is used to remove surface imperfections, kinks, and may further reduce the thickness of the comestible sheet 25.

[0020] In the exemplary embodiment of FIG. 1, the system 10 further includes a scoring roller 85 and a lateral dividing or cutting roller 90 downstream of the comestible forming station 30. The scoring roller 85 and the lateral dividing roller 90 score and divide the comestible sheet 25 into individual scored sheets. The scored sheets may then be conveyed to a cooling tunnel (not shown) for further conditioning. Thereafter, the comestible may be transported to further processing and packaging equipment for producing packaged comestible products, perhaps in a single line with the system 10.

[0021] The smoothing roller 80, scoring roller 85, and dividing roller 90, as well as their equivalents, are considered to be forming or manufacturing instruments within the forming system 10. In some embodiments, in addition to or in place of the scoring roller 85 and the dividing roller 90, the system 10 may include other comestible shaping solutions, such as a drop-roller, a die cutter, pelletizer or other similar comestible shaping equipment (provided the sheet is cooled to a sufficient extent). As such, the comestible manufacturing system 10 can produce a comestible having various final shapes which can subsequently be packaged, or pellets that are subsequently coated.

[0022] In another embodiment of the manufacturing system 10, illustrated in

FIG. 2, the comestible forming station 30 includes a sizing type extruder 95 and a plurality of sizing rollers 40. The sizing type extruder 95 is a low shear extruder configured to force the comestible mass 15 supplied from the mixing station 20 through a forming die (not shown) having a defined width orifice, thereby forming a generally uniform extrusion 15a that may be a continuous stream of a substantially uniform size, or alternatively, may be periodically cut into separate shaped pieces of comestible mass 15. In the illustrated, non- limiting embodiment, the plurality of sizing rollers 40 are generally arranged in pairs, such as six pairs 40a - 40f for example, and each pair 40 including an upper roller 45 and a lower roller 50 as illustrated in the FIG. In such embodiments, the upper and lower roller 45, 50 of each pair 40 includes rotational axes that are vertically offset to facilitate the creation of a gap (not shown) there between. The plurality of pairs of sizing rollers 40 are arranged generally in sequence over gaps or openings in a conveyor 75, such that the shaped comestible mass 15a formed by the sizing type extruder 95 passes through each of the plurality of sizing rollers 40 consecutively. The distance or gap between each consecutive pair of rollers 40 may be substantially identical, or alternatively may generally decrease so as to progressively reduce the thickness of the shaped comestible mass 15a.

[0023] Each pair of rollers 40 is configured to compress or deform and elongate the shaped comestible mass 15a as it passes between the upper and lower rollers 45, 50 to provide a generally uniform thickness. The comestible sheet 25 having a generally uniform thickness 65 may subsequently expand or shrink in its thickness depending on a formulation of the comestible. Further, after passing through the series of rollers 40, the comestible sheet 25 having a generally uniform thickness may subsequently be shaped, textured, and/or printed, which may alter the generally uniform thickness.

[0024] The rollers 40 of either embodiment of the comestible forming station

30 may be configured to have a smooth surface finish. In addition, the rollers 40 may also be configured with any desirable actuation device (not shown), such as but not limited to a servomechanism that controls the vertical position of the rollers 45, 50 within each roller pair 40 relative to each other and thereby adjusts the gap 55 there between. [0025] With reference to both FIGS. 1 and 2, an expelling device 100 is configured to form a continuous or discontinuous film, layer, or coating of a releasing agent over a surface of one or more components that contact the comestible during the

manufacturing process, or over a surface of the comestible itself. Exemplary releasing agents include, but are not limited to, food quality vegetable or mineral oil, medium chain triglycerides, and any other edible oils or lubricants for example. The releasing agent may be applied to prevent the comestible mass 15 or sheet 25 from sticking to a manufacturing instrument or component, such as the sizing rollers 45, 50 for example. Alternatively, the releasing agent may be applied for reasons other than preventing adherence to a

manufacturing instrument, such as to modify the texture of the comestible, or to assist with packaging concerns for example. In one embodiment, the applied releasing agent has a desired flavor such that when the releasing agent contacts the comestible, the flavor of the releasing agent is transferred to the comestible.

[0026] In the illustrated, non- limiting embodiments of FIGS. 1 and 2, at least one expelling device 100 is positioned within the manufacturing system 10 so at to lubricate a lower roller, such as roller 50, of a pair of sizing rollers 40 of the comestible forming system 30. Alternatively, or in addition, another expelling device 100 may be configured to apply a coating of releasing agent to a surface of the upper roller, such as roller 45, of a pair of sizing rollers 40. The plurality of expelling devices 100 within the system 10 may be independent or may be fluidly coupled to one another.

[0027] In the exemplary embodiment of FIG. 2, an expelling device 100 is also arranged adjacent the output of the sizing type extruder 95 and is configured to apply the releasing agent to one or more surfaces of the comestible mass 15a. Although the expelling devices 100 are described as generally lubricating one or more of the sizing rollers 45, 50 of the forming system 30 or the comestible mass 15a before it enters one or more of the sizing rollers 45, 50, an expelling device 100 may be arranged at any location within the system 10 and may be configured to apply a releasing agent to any of the components in the system 10 that are configured to contact the comestible. Exemplary components include, but are not limited to a smoothing roller 80, a scoring roller 85, a dividing roller 90, a rotating chain die member, and one or more guillotine blades of a cut and wrap system for example.

[0028] By positioning the expelling device generally vertically above a horizontal mid-point of a surface to be lubricated, such as at or above the horizontal diameter of the roller 50 for example, gravity can compound with the velocity of the spray to assist in the delivery of the releasing agent to a desired surface. Because of the low velocity at which the releasing agent is expelled, the substantial entirety of the releasing agent tends to settle on the desired surface and form a film or coating. This provides a significant benefit over conventional pressure nozzles, where a liquid is expelled with such a high velocity (greater than 35 ft/s) that a significant portion of the liquid bounces off of the surface to be coated.

[0029] Referring now to FIG. 3, the expelling device 100 configured for use with the comestible manufacturing system 10 is illustrated in more detail. In the illustrated non- limiting embodiment, the expelling device 100 includes an ultrasonic atomizing spray nozzle 105 fluidly coupled to a liquid delivery system (illustrated schematically at 110). In an exemplary embodiment, the ultrasonic nozzle 105 uses high frequency sound vibration to atomize the liquid from the delivery system 110 (i.e. releasing agent) as it flows through the nozzle 105 into a fine mist spray 120 having a plurality of droplets. Because the ultrasonic spray nozzle 105 generally does not rely on pressure, the velocity with which the spray 120 is expelled from the atomizing surface 115 of the nozzle 105 is substantially lower than that of a pressurized nozzle. The velocity of the spray 120 is generally less than 35 ft/s, and more particularly, may be in the range of about .5 to about 5 ft/s and preferably between about .7 ft/s and about 1.2 ft/s. In addition, the rate at which the liquid is atomized by the nozzle 105 is primarily controlled by the rate at which liquid from the liquid delivery system 110 is supplied to the nozzle 105. In one embodiment, the flow rate of atomized liquid from the nozzle 105 is substantially constant and between about 5 mL/min and about 100 mL/min.

[0030] The droplets of atomized liquid that make up the spray 120 produced by the ultrasonic nozzle 105 have a relatively narrow and easily controllable distribution. The size of the droplets is dependent on the frequency at which the atomizing surface 115 of the nozzle 105 vibrates, as well as the surface tension and the density of the liquid being atomized. In the illustrated, non- limiting embodiment, one or more air jets 130 connected to the housing 125 of the nozzle 105 are positioned adjacent the atomizing surface 115 of the ultrasonic nozzle 105. The spray 120 expelled from the atomizing surface 115 of the nozzle 105 can be controlled and shaped precisely by entraining the low- velocity spray 120 in an ancillary air stream, such as provided by air jet 130 for example. The shape of the spray 120 can be controlled not only by the shape of the ultrasonic nozzle 105 used, but also by adjusting the position and angle of the one or more air jets 130 relative to the atomizing surface 115 of the ultrasonic nozzle 105, which results in a generally uniform distribution of spray droplets. In one embodiment, the shape of the spray 120 can have a width in the range of about .015in and about 3 in. [0031] It should be appreciated that although the system 10 is shown as a continuous line in Figures 1 and 2, in other embodiments, one or more of these components of the comestible manufacturing system 10 may be located in different parts of a

manufacturing plant or even in a different manufacturing plant. For example, in one embodiment, the comestible mixing system 20 is located in one plant, and the comestible forming system 55 and other subsequent components, such as the scoring and dividing rollers and packaging components, are located in a different plant, wherein the mixed comestible mass 15 transferred from one plant to the other for subsequent processes.

[0032] All references, including publications, patent applications, and patents cited herein are hereby incorporated by reference to the same extent as if each reference were individually and specifically indicated to be incorporated by reference and were set forth in its entirety herein.

[0033] The use of the terms "a" and "an" and "the" and similar referents in the context of describing the invention (especially in the context of the following claims) is to be construed to cover both the singular and the plural, unless otherwise indicated herein or clearly contradicted by context. The terms "comprising," "having," "including," and

"containing" are to be construed as open-ended terms (i.e., meaning "including, but not limited to,") unless otherwise noted. Recitation of ranges of values herein are merely intended to serve as a shorthand method of referring individually to each separate value falling within the range, unless otherwise indicated herein, and each separate value is incorporated into the specification as if it were individually recited herein. All methods described herein can be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The use of any and all examples, or exemplary language (e.g., "such as") provided herein, is intended merely to better illuminate the invention and does not pose a limitation on the scope of the invention unless otherwise claimed. No language in the specification should be construed as indicating any non-claimed element as essential to the practice of the invention.

[0034] Preferred embodiments of this invention are described herein, including the best mode known to the inventors for carrying out the invention. Variations of those preferred embodiments may become apparent to those of ordinary skill in the art upon reading the foregoing description. The inventors expect skilled artisans to employ such variations as appropriate, and the inventors intend for the invention to be practiced otherwise than as specifically described herein. Accordingly, this invention includes all modifications and equivalents of the subject matter recited in the claims appended hereto as permitted by applicable law. Moreover, any combination of the above-described elements in all possible variations thereof is encompassed by the invention unless otherwise indicated herein or otherwise clearly contradicted by context.