CROSS REFERENCE TO RELATED APPLICATIONS(S)
This application claims priority of European Patent Application Number EP06 003 684.5, filed Feb. 23, 2006, entitled “Process for Modified Production of filled One-Shot Confectionary Products,” the entirety of which is hereby incorporated herein by reference.
FIELD OF INVENTION
This invention relates generally to a process for filling a shell with a filling, and more particularly to a process for preparing a filled confectionery product where an edible shell is filled with a filling and an edible cover at substantially the same time.
BACKGROUND
Various methods of manufacture are known for creating filled products, such as chocolate confectionery. Chocolate filled confections typically consist of at least two different types of chocolate or at least a chocolate material and a food component as the filling. One of the known methods is to manufacture each part of the filled chocolate in a separate step. The shell of the chocolate exterior is made first. After cooling, the hollow chocolate shell is filled with the desired filling. The last step is depositing a chocolate cover over the filled chocolate shell. Manufacturing filled chocolate in this manner entails multiple process steps.
Production of chocolate confectionery can also occur simultaneously via the so-called “one-shot” process, where the outer chocolate shell and the inner filling are deposited at the same time, thereby combining the multiple process steps into one. Currently, the one-shot process utilizes a one-shot depositor having two concentric nozzles, an inner and an outer nozzle. The outer nozzle is connected to the chocolate supply and the inner nozzle is connected to the filling supply. During the production of the filled product, the depositor discharges the chocolate shell material and the filling material, one after the other in rapid succession (i.e., essentially simultaneously), into empty cavities of a mold. The one-shot process normally begins by depositing the chocolate material and the filling material inside the chocolate material, so that the chocolate material forms the outer shell with the filling material dispersed therein. The one-shot method greatly simplifies the manufacture of the filled chocolate products. Thus, the chocolate shell, its filling, and the chocolate cover are all deposited in the same step, or in “one-shot.”
Unfortunately, there are many process limitations associated with the one-shot process. One major limitation is that the physical properties (e.g., temperature, density, and viscosity) of the chocolate and filling material must be closely matched to obtain high-quality products. For example, if the production of filled products, like chocolates, involves an outer shell material of a lower density than the filling material then the filling material will tend to sink down into and/or through the chocolate shell. This sinking action tends to result, at best, in undesired variations in the thickness of the shell (as shown in FIG. 1A) or, at worst, in the filling material completely penetrating the shell and, thus, leaking out, as shown in FIG. 1B. Furthermore, the temperature of the filling must be the same or lower than that of the chocolate shell so that it does not damage the tempering of, or melt, the chocolate shell.
There is a continuing need for a method of manufacturing filled chocolate products which is efficient (i.e., quick, with few process steps) and is not limited by the need to closely match physical parameters (i.e., temperature, viscosity, and density) of the chocolate and filling. More flexibility is desired, such that many types of filling material may be used in the chocolate shell while still providing process efficiency.
SUMMARY
This invention provides a process for manufacturing filled products by filling a pre-made outer shell material with a filling and cover material at substantially the same time. In this process, a one-shot depositor discharges both the filling material and a separate cover material substantially simultaneously into an already made shell material. The shell material is made prior to using the one-shot process and the deposition of the filling material. Since the filling material is deposited into the pre-made shell, the filling cannot penetrate significantly into the pre-formed shell material. This allows the use of many types of fillings, since differences in densities, viscosities, and/or temperatures are no longer critical. As a result, deposition of the filling in the present modified process does not cause defects to the completed product due to differences in these physical parameters between the shell and filling. Preferably the outer shell material and cover material are formed of chocolate.
The edible filling used in the modified one-shot process of this invention may comprise water-based fillings and fat-based fillings. The pre-made outer shell may comprise chocolate, candy, caramel, toffee, or other suitable shell substance. The outer shell is produced by any known method of manufacture used in the art, such as molding, stamping, pressing, and the like.
BRIEF DESCRIPTION OF THE DRAWINGS
FIGS. 1A and 1B illustrate possible defects in conventional chocolate-filled products prepared by the conventional one-shot process.
FIG. 2 is a general flow chart illustrating the present invention.
FIG. 3 is a more detailed flow chart illustrating the present invention.
FIG. 4 is a schematic (not to scale) of the inventive process.
DETAILED DESCRIPTION
Methods and apparatus are disclosed herein and illustrated in FIGS. 2-4 for forming filled confectionery products, and in particular filled chocolate products, by using the modified one-shot process of the present invention to fill the edible shell (e.g., chocolate shell). The chocolate shell is made first in a separate step and is then filled in a second, subsequent step. During the filling step, the one-shot depositor adds both the filling and the covering material, in particular, the filling and the chocolate material into the chocolate shell in a single step. The covering material effectively completes or closes the edible shell, thereby completely containing the filling material in the outer shell (i.e., the pre-made shell and the covering material). Although this invention relates mainly to edible products made using the modified one-shot process, non-edible products may also be made utilizing this process as well.
A flow chart in FIG. 2 describes the general modified one-shot process of this invention for filling an edible shell. As shown in FIG. 2, the outer shell is formed in step 10 and optionally preheated in step 12. The filling and covering material are deposited essentially simultaneously in step 14. The so-formed filled product is then cooled in step 16. Optional preheating in step 12 allows the sides of the outer shell to be slightly softened so as to better “knit” with the cover material. The exterior chocolate shell material can be manufactured using typical chocolate manufacturing techniques such as, for example, molding, stamping, pressing, and the like. Besides a chocolate material for the shell, the shell material may also be made of candy, caramel, toffee, or other suitable shell materials that are edible and would be utilized in confectionery products.
A more detailed flow chart is shown in FIG. 3 using molding techniques to prepare the pre-made chocolate shell. A liquid chocolate shell material is poured or placed into a cavity in the mold in order to take on the shape of the cavity, as shown at step 18. The cavities in which the outer shell is prepared may be in any of a number of different shapes such as rectangles, squares, oblongs, circles, stars, seashells, and other typical chocolate molding shapes currently in use in the art. Additionally, the cavities may contain designs or emblems at the bottom of the mold so that they are imprinted into the final filled chocolate. Generally, once demolded or removed from the cavity, the bottom of the edible shell forms the top of the final filled-chocolate product and the covering material forms the bottom of the final filled-chocolate product.
Once the chocolate shell material is poured into the cavity, conventional molding techniques can be used to form the outer shell. For example, a conventional press or stamping machine can be used in which a rod or other member protrudes down therefrom and extends towards the mold tray placed beneath it, as in step 20 of FIG. 3, to form the outer shell. Preferably a relatively even thickness of chocolate is spread about all edges of the inner cavity within the mold. The ends of the rods are shaped so that the rod fits therein to form, with the cavity, the outer shell and is pressed down into the chocolate displacing the chocolate shell material such that it is forced to spread out (preferably evenly) over the edges of the inner cavity of the mold, thereby creating a hollow center in the chocolate material into which the filling material is later deposited (along with the covering material). The preferably cold rods are pressed down into the chocolate within the cavity to form the outer shell. Other conventional molding equipment may also be used. The edible shells can be prepared just prior to deposition of the filling and covering material. Of course, the edible shells could be prepared at an earlier time and then placed within the appropriate cavities once it is desired to complete the filled-chocolate products.
After the chocolate material has been adequately spread out over the edges within the inner cavity of the mold during the molding process, some of the chocolate (i.e., the vertical ends protruding up out of the mold) may have spread out and up over the top edges of the cavities. This excess chocolate material can, if desired, be removed from around the open end of the cavity in a manner so there is no contamination or contact with adjacent chocolate shells. Preferably, the edges of the chocolate are trimmed so that they do not extend beyond the terminal edges of the cavity (step 22 of FIG. 3). The chocolate shells are then cooled in step 24 (typically to about 15 to about 20° C.) to ensure that the shell exterior has properly hardened. Just before the chocolate shells are to be filled, however, they can be optionally preheated (typically to a temperature of about 27 to about 30° C. and preferably about 27° C.) at step 26. Preferably only the upper chocolate edges of the shell are so heated. This optional preheating step allows the upper chocolate edges of the shell to slightly soften, such that when the shell is filled and topped off with the chocolate covering, the softened preheated edges of the shell will act to seal, or “knit” with, the chocolate cover material, thereby creating an effective closure or seal which does not allow leakage of the filling.
Once the chocolate shell is formed (and preheating if that optional step is used), it is ready to be filled with the desired filling and topped with the chocolate covering using the one-shot depositor, step 28. Any type of filling that is compatible with the one-shot machine may be used. As noted above, there is no need to match up densities, viscosities, or temperatures of the filling material with that of the chocolate shell material since the shell has already been made and is hardened, and it is therefore not significantly affected by the physical parameters of the filling used. Of course, the temperature of the filling material should not be so high as to cause significant melting of the chocolate shell. Typical filling materials that may be used are water-based fillings and fat-based fillings (e.g., sugar fillings, chocolate fillings, caramel fillings, and the like). The edible covering material may be chosen to match that of the edible shell material used; but, if desired, the cover may be a material different from the edible shell material.
A schematic of one embodiment of the modified one-shot process is shown in FIG. 4. The individual mold openings or cavities 48 are typically contained in a tray or mold 46 to, at least initially, hold the pre-made shells 40; the individual cavities 48 may be of similar or different shapes, sizes, depths, and the like. The cavity 48 comprise a hollow cavity with an opening at the upper end and an inner cavity formed by a bottom 48A and edges 48B; the edges 48B extend upwards from the bottom 48A and terminate at the upper end of the individual cavities or tray; the top portion is defined by an open end. The pre-made shells 40, having a bottom 44 and edges 42, fit within the cavities 48. The mold 46 rests upon a conveyor belt 66 (advancing along the direction of the arrow) or other means which allows the individual pre-made shells 40 to advance so that the filling material 52 and cover material 50 may be deposited therein. The one-shot depositor comprises a manifold (not shown) to which at least one nozzle assembly 54 is connected. Preferably, a plurality of nozzle assemblies 54 is used to prepare a plurality of filled confectionary products 60 at the same time. The nozzle assembly comprises a nozzle arrangement having at least two concentric nozzles: an inner nozzle 56 and an outer nozzle 58. The inner nozzle 56 is used to dispense the filling material 52 (which is obtained via line 52A). The outer nozzle 58 is used to dispense the cover material 50 (which is obtained via line 50A). The nozzle assembly 54 dispenses the filling material 52 and the cover material 50 substantially simultaneously into the pre-made shell 40. “Substantially simultaneously” means that both the filling material 52 and the covering material 50 are dispensed through the same nozzle assembly 54; filling material 52 is dispensed first through the inner nozzle 58 followed almost immediately by the cover material 50 through the outer nozzle 56, such that it allows the filling material 64A to fill up the cavity within the pre-made shell 40 first, followed by the immediate dispensing of the cover material 62A which is laid across the top of the filling material and forms a seal with the edges 42 of the (optionally preheated) pre-made shell 40. The filling 64 or 64A is encased in the edible shell (consisting of pre-made shell 40 and the covering material 62 or 62A) as it is deposited in the cavity. The edible covering material 50 forms a covering 62 or 62A on the open end of the edible pre-made shell 40 encasing the filling 64 or 64A inside, which forms the filled chocolate product 60. After the filling and cover have been deposited, the filled chocolate product is then allowed to cool (typically to less than about 20° C.) and is ready for packaging. If desired, more than two concentric nozzles may be used to prepare, for example, confectionery products with more than one type of filling.
Patent Application
20070196548
