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 The present invention generally relates to apparatus and methods for trimming moils molded products. More specifically, the invention relates to moil configurations.
 In 1853, railroad magnate Commodore Cornelius Vanderbilt, dining at a Saratoga Springs, N.Y., resort, sent his fried potatoes back to the chef, complaining that they were too thick. The chef that evening was Native-American George Crum, who was apparently miffed at Vanderbilt's complaint and decided it deserved a sarcastic reply. He sliced potatoes paper thin, fried them to a crisp in boiling oil, and salted them. The Commodore loved the “crunch potato slices,” as he called them, and the “Saratoga Chips” became a restaurant fad from that day forward.
 Since their invention, potato chips have been distributed to consumers in a variety of containers, from kettle drums to bags. To account for the irregular shape of the chips, container designers conventionally developed the chip container around the collective size volume of the chips so that the container held the desired volume by weight of chips. However, the irregular shape of potato chips resulted in containers having large size volumes, which, in turn increased the cost of the product due to additional shipping and shelving space costs.
 In more modem times, potato chips have been designed with a circular, flat shape so as to efficiently fit within a cylindrical canister (sometimes referred to as a can). For a given volume by weight of chips, the size volume of the chip container was dramatically reduced. This development in potato chip technology was widely accepted by the buying public and manufacturers alike. If a noncircular chip or other product were developed, it may be useful for the shape of the chip canister to follow the shape of the non-circular product.
 Products, such as containers, may be manufactured through the inexpensive process of blow molding plastic into the desired shape. In the formation of blow molded plastic products, the top of the product may include an outwardly extending flange to serve as a lip to aid in sealing the container with a removable lid. Additionally, a manufacturing handling appendage may be formed on the top lip of the initial product. This manufacturing handling appendage, called a moil, eventually is removed from the initial product to reveal the top lip.
 The moil may be removed by rolling or fixedly rotating the product about its longitudinal axis between two rails where one of the rails includes a stationary knife edge aligned at the moil/container opening trim line. After the moil is removed by this spin trimming process, the container opening is exposed and the container is ready to receive the potato chips and the removable lid.
 In the case of a container having a circular cross section at the trim line, the angular relationship between a stationary metal knife blade and the surface being cut may be held relatively constant at each trim point during the spin trimming process. An ideal angular relationship may be where the blade edge is held perpendicular to the thickness of the container wall at each cut point. This cut of alignment minimizes the length over which the blade is used for a given trim segment.
 The invention includes a non-circular product having a container and a moil and provides a method to separate the container from the moil at a trim line. The container may have a cross section that defines at least one flat side. For example, the cross section may be a polygon in the shape of a triangle. The polygon cross section may also define a plurality of vertices that define a smooth curve. In one aspect of the invention, the container includes a lip disposed between the trim line and the container.
 The moil, which may be thought of as a manufacturing handling appendage, is connected to the container at the trim line. A cam may be formed as part of the moil such that the non-circular product follows the cam profile as the non-circular product rotates. This cam may have at least one lobe. In one aspect of the invention, the cam assumes the shape of a closed curve of constant width such as that which defines an equilateral configuration. One closed curve of constant width that may be used includes a plurality of segments that are derived from the principles of the Reuleaux triangle.
 The cam may be a first cam where the moil includes a second cam such that the first cam is disposed between the container and the second cam. This arrangement may form a groove. In another aspect of the invention, the first cam and the lip form a trim groove having a first opening distance. Here, the first cam may be part of a guide where the guide further includes one depression formed into the guide at an angle that presents a second opening distance. This second opening distance may be greater than the first opening distance. In a further embodiment, the first cam defines a plurality of non-circular curves of constant width and a lever is disposed above the first cam. In operation, the non-circular product may be placed in a trimming machine. The trimming machine having a blade, a first rail, and a second rail, where the trim line aligns with the blade and the first cam is disposed between the first rail and the second rail. The non-circular product may be urged over the blade. In one aspect of the invention, the first cam is engaged with a conveyor belt. In another aspect, the non-circular product is moved along a bottom guide.
 These and other features of the invention are discussed in greater detail below in the following detailed description of the presently preferred embodiments with reference to the accompanying drawings.
 In regards to removing a moil from a container having a sealing lip surface by cutting consecutive trim segments, the inventors have determined that minimizing the length over which a blade is used for a given trim segment works to make it more difficult for the blade to bend. By maintaining a rigid blade at a given trim segment, the cut over the newly exposed surface of the lip will be smooth for each trim segment. With a smooth cut, the need to clean the sealing lip surface of the container through facing the lip surface is avoided.
 As the length over which the blade is used for a given trim segment increases, the blade becomes more likely to flex so as to result in uneven cuts over a given trim segment. For uneven cuts, an additional facing process would be needed to clean the sealing lip surface finish of each container, resulting in additional manufacturing costs.
 In the case of a container having a non-circular cross section at the trim line, the angular relationship between the stationary knife and the surface being cut cannot be held relatively constant at each trim point during a conventional spin trimming process as in the case of circular cross section containers. In other words, the length over which the blade is used for a given trim segment for non-circular cross section containers may be at a minimum at some locations and greater than minimum at other locations using the same techniques used for circular cross section containers. For example, the length over which the blade is used for a given trim segment may be at a minimum at the comers of a triangular container and increase as the blade approaches the midpoint of each of the three flat sides. At the side midpoint, the knife blade may act as a chopping guillotine rather than a cutting blade. Chopping the moil from a triangular container or any polygon container would undesirably result in uneven cuts that require facing.
 Smoothly cutting a moil from a polygon container by rolling that product between two rails of a piece of machinery requires that the angular relationship between a stationary knife and the surface being cut be varied. A surprising solution to this problem is to modify the moil to include the curvilinear triangle known as the Reuleaux triangle. As a shape of constant width, a Reuleaux triangle may be rolled between the two parallel rails of a piece of machinery. Moreover, since the centroid of a Reuleaux triangle varies as the Reuleaux triangle rolls forward, the angular relationship between a stationary knife and the surface being cut will varied. Additionally, this solution is inexpensive since a blow molded moil need only be redesigned to include a cam based on a Reuleaux triangle.
 Included with product
 As noted above, trim line
 Included with moil
 As a knife blade approaches the midpoints of walls
 In addition to surfaces
 Industrial machinery may move an object forward by rolling that object between two parallel rails as guided by a circular curved surface. For example, an aluminum can may be rolled forward by pacing the can between a stationary lower rail and a moving upper rail. The circular curved surface helps roll the can forward because the width of its circular perimeter is constant when measured anywhere across its perimeter. For a circle, the width and the diameter coincide and may be thought of as an ellipse of which the two axes are equal in length.
 As noted above, the invention may employ principles of the curvilinear triangle known as the Reuleaux triangle so as to take advantage of the constant width and centroid variable movement of the Reuleaux triangle.
 The following discussion on the aspects of the Reuleaux triangle is provided to aid in understanding the Reuleaux triangle. To better understand the width of a circle or any shape enclosing an area, pick two parallel lines so that the shape, here a circle, lies between the two lines. Move each line towards the shape all the while keeping each line parallel to its original orientation. After both lines touch the shape, the distance between the two lines is the width of the shape in the direction of the two lines. A shape is of constant width if its width does not depend on the direction from which the lines approach the shape. Any shape having a constant width may be rolled between the two parallel rails of a piece of machinery.
 As seen in
 Conveyor system
 Conveyor rail
 At step
 At step
 At step
 The exemplary embodiments described herein are provided merely to illustrate the principles of the invention and should not be construed as limiting the scope of the subject matter of the terms of the claimed invention. The specification and drawings are, accordingly, to be regarded in an illustrative rather than a restrictive sense. Moreover, the principles of the invention may be applied to achieve the advantages described herein and to achieve other advantages or to satisfy other objectives, as well.
 Although modifications and changes may be suggested by those skilled in the art, it is the intention of the inventors to embody within the patent warranted hereon all changes and modifications as reasonably and properly come within the scope of their contribution to the art.