The present disclosure relates generally to a three-panel or four-panel lidding device used to seal a food container.
Frozen foods are easy to store, transport, and serve. Other types of foods are also sold in stores as pre-prepared and ready for immediate cooking or microwaving. The packaging of these foods typically uses a clear plastic film that covers the food product inside the food container or bowl, as well as an outer package or box in which the food container is housed. In use, the consumer must open the box, cut or remove the plastic film in order to vent the food during cooking, cook/microwave the food, then discard the box and film. There are, however, instances when the film is not properly vented or when the user does not have the proper tool (e.g., knife or scissors) to vent the film, causing undesirable mistakes in the food cooking process. Providing both a plastic film and a packaging box also creates undesirable waste. Accordingly, improvements in the packaging of pre-prepared food products are desirable.
The conventional techniques have been considered satisfactory for their intended purpose. However, there is an ever present need for improved systems and methods for packaging food such as pre-prepared food products. This disclosure provides a solution for this need.
The systems and methods described herein can be used to seal containers, such as for frozen food products, and to provide for handling the containers when open with hot foot products therein.
A lidding device includes a first panel comprising a lid configured to cover and seal a food container. A second panel is foldably connected to the first panel. A third panel includes a bottom panel opposite the lid, wherein the second panel is foldably connected to the first panel and the third panel. A fourth panel is foldably connected to at least one of the first panel and the third panel, wherein the fourth panel and second panel are configured to at least partially enclose a food container between the second and fourth panels.
The food container can be sealed to the first panel, wherein the food container is at least partially enclosed between first panel and the third panel and between the second panel and the fourth panel. An insulation space can be defined between the food container and at least one of the first, second, third, and fourth panels. Side flaps foldably connected to at least one of the first and third panels configured for adhering the first panel to the third panel. The first panel, second panel, third panel, fourth panel, and side flaps can completely enclose the food container. It is also contemplated that two opposed panels can be foldably connected to the first, second, third, and fourth panels, wherein each of the two opposed panels includes a cutout which receives a respective edge of the food container.
The first panel can include a venting system including one or more lines of weakness along an edge of the first panel for venting the first panel. The first panel can include a pull tab for peeling back the first panel along one or more lines of weakness along the first panel edges. The second panel can be configured for use as a foot that allows the lidding device to stand upright on the second panel. At least one of the panels can be configured to be printable for printing product identifying material or instructions thereon. At least the first panel can comprise a thermoplastic or heat sealable coating applied to food-facing side of the panel. The thermoplastic coating can comprise a polyolefin dispersion or a polymeric-based film.
A method of forming a lidding device includes providing a printable or pre-printed paperboard material, forming a multi-panel blank from the paperboard material, wherein the panels are separated via lines of weakness, and applying a thermoplastic heat seal coating to at least a portion of one side of the blank. The method includes fitting the blank around a container to surround the container between at least a top panel and an opposed bottom panel and between a first side panel and an opposed second side pane and heat sealing the thermoplastic heat seal coating to the container.
The method can include applying one or more coatings to the paperboard material. The one or more coatings can comprise a clay coating. Applying one or more coatings can comprise applying a thermoplastic heat seal coating to at least a portion of one side of the blank. The paperboard material can be pre-printed with marketing graphics with heat resistant microwaveable inks and/or overprint. Fitting the blank around the container can include completely surrounding the container inside the blank. Fitting the blank around the container can include protruding two edges of the container through cutouts in opposed flaps of the blank. Fitting the blank around the container can include forming at least one insulation space between the container and the panels of the blank.
A lidding device includes a food container and a paper container sealed to the food container. The paper container surrounds the food container on at least three or four sides of the food container. There is an insulation space defined between the food container and the paper container.
These and other features of the systems and methods of the subject disclosure will become more readily apparent to those skilled in the art from the following detailed description of the preferred embodiments taken in conjunction with the drawings.
So that those skilled in the art to which the subject disclosure appertains will readily understand how to make and use the devices and methods of the subject disclosure without undue experimentation, preferred embodiments thereof will be described in detail herein below with reference to certain figures, wherein:
Reference will now be made to the drawings wherein like reference numerals identify similar structural features or aspects of the subject disclosure. For purposes of explanation and illustration, and not limitation, a partial view of an embodiment of a blank for a lidding device in accordance with the disclosure is shown in
The figures illustrate various embodiments of a lidding device 10. As shown in the Figures, the lidding device 10 comprises three panels: a first panel 14 separated from a third panel 42 by a second panel 40. Any of the panels may include marketing materials, product identifiers and information, or graphics. The first panel 14 forms a lid that covers and seals the contents of a food container 12. The second panel forms a foot 46 that is useful for display purposes. The third panel 42 provides a base panel.
A thermoplastic or heat seal coating may be applied to the food-facing side of the first panel 14, which is the side that interacts with the container 12 to seal the contents of the container. The heat-seal coating is applied at suitable places around the panel. This coating also acts as a barrier to protect the lid from water/oils in the product(s) stored in the container. In some embodiments, the thermoplastic coating is a polyolefin dispersion, although other water or solvent-based coatings that provide a suitable seal between the device and the container may be used. For example, polymeric based films, which may be adhesively laminated to the paperboard blank or directly extrusion coated to the blank, may be used. In some embodiments, the heat sealable coating is applied to the underside of substantially the entirety of the first panel 14 so that it faces and covers/seals the contents of the container. In some cases, the coating consists of a heat sealable adhesive that is applied to the paperboard blank as part of production before the blank is cut, and in other cases is applied afterwards. The coated paperboard is configured to withstand a range of environmental conditions relating to manufacture, transportation, storage (which may include freezing), sale, and use of the product, which may include defrosting and/or heating (such as by microwave oven, conventional oven, convection oven, and/or toaster oven) of the product stored within the food container. The coated paperboard is also configured to be safe for contact with food products in compliance with 21 CFR 176.170.
One specific embodiment of a lidding device 10 that is useful for covering and sealing a food product container 12 is illustrated by
The lidding device 10 that is used to cover and protect the food contained in the container 12 is typically made of paperboard, but may be made of any printable, foldable, fiber-based substrate. In a particular embodiment, the lidding device 10 is made of a two-sided clay coated SBS (Solid Bleached Sulfate) having an appropriate coating as described above applied thereto, although it should be understood that any food-safe lidding material may be used.
The lidding device 10 provides a three-panel system that covers the top and bottom of the food container 12, as well as provides a side panel that functions as a connecting panel, which also provides a display function. As shown in
Specifically, as shown in
In an alternate embodiment, no tab is required, but a line of weakness 28 is provided as the venting system 20, as shown in
In a further embodiment, a pull open tear strip 36 may be provided, as shown in
In a further embodiment, there may be provided a push to vent feature in the lid. One embodiment of a simple push to vent feature is shown in
An alternate embodiment of a push to vent feature is shown in
Although a number of alternate embodiments for venting system are shown and described, it should be understood that any configuration that provides a venting system may be used in connection with the three-panel lid disclosed herein. Regardless of the embodiment provided, upon appropriate pressure or pulling at the venting system 20, the first panel 14 opens or separates from the container 12, allowing air to vent into and from the food container during cooking. In some embodiments, the first panel is removed before serving and consumption. Once the food has cooked completely, the entire panel lid 14 may be removed, as shown in
Reference is now made back to
The second panel 40 generally forms a side or bottom panel (depending upon how the device 10 is positioned). In some embodiments, the second panel is configured to serve as a foot 46 that keeps the bowl upright, as shown in
Any or all of the panels have at least one (or both) side(s) that are configured to be printable for printing product identifying material and/or instructions thereon. For example, the non-food facing side of the first panel 14 generally contains brand and product messaging or images, while additional information, such as a list of ingredients and cooking and/or opening instructions, may be included on another panel, such as the second and/or or third panels.
Also disclosed is a method of forming a lidding device. In one embodiment, the device may be formed using standard paperboard forming machinery to form a die-cut blank, having various lines of weakness, such as score lines and/or perforations, positioned thereon. A clay coating is then applied to the blank. Next, the suitable thermoplastic heat sealcoating is applied to one side of the blank, which will generally be the food-facing side of at least the first panel 14. Alternatively, the thermoplastic heat seal coating may be applied during manufacture of the paperboard out of which the blank is cut. The paperboard may be printed with heat resistant microwaveable inks and/or overprint. Moreover, the blank used to form the lidding device may be die cut to a customer's specifications, depending upon the shape of the food container to be covered and sealed.
In use, the container 12 is filled with food (or other product) and the lidding device 10 is folded and formed from the blank and wrapped around the container 12. Heat sealing equipment may then be used to activate the heat sealable coating to bind the paperboard to the container. In other embodiments, ultrasonic or radio frequency sealing technology may be used to activate the heat sealable coating. This may be done using any suitable machinery or method.
The blank 100 for a lidding device 102 (shown in
With continued reference to
With reference now to
With reference now to
In any of the blanks 100, 200, 300, at least one of the panels can be configured to be printable for printing product identifying material or instructions thereon. At least the first panel of the blanks 100, 200, 300 can comprise a thermoplastic or heat sealable coating applied to food-facing side of the panel, and the thermoplastic coating can comprise a polyolefin dispersion or a polymeric-based film.
A method of forming a lidding device (e.g. lidding device 102, 202, 302) includes providing a printable or pre-printed paperboard material, forming a multi-panel blank (e.g. blanks 100, 200, 300) from the paperboard material, wherein the panels (e.g. panels 104, 110, 112, 114) are separated via lines of weakness (e.g. fold lines 150 shown in
The method can include applying one or more coatings to the paperboard material. The one or more coatings can comprise a clay coating. The applying the one or more coatings can comprise applying a thermoplastic heat seal coating to at least a portion of one side of the blank. The paperboard material can be pre-printed with marketing graphics with heat resistant microwaveable inks and/or overprint. Fitting the blank around the container can include completely surrounding the container inside the blank (e.g. as shown in
Systems and methods disclosed herein provide consumer features such as the following. The plastic tray does not have to be removed from the carton for cooking. The carton can provide a convenient means of handling the food tray for placement in the oven and removal of the hot tray after cooking, by virtue of the insulation spaces which serve as carrying handles. The integrated food tray and carton, especially in the case of the four-sided embodimens can potentially create a more aesthetically pleasing food vessel. The option of a hinged lid can allow for convenient venting but can also serve as a splatter guard inside the oven. A lid can also provide a means of protecting food and keeping it warm as it is transported from oven to table or desk. The lid can also be used to cover food discreetly when others are near. Also, paperboard and plastic components can be separated for recycling.
The methods and systems of the present disclosure, as described above and shown in the drawings, provide for lidding and containing products such as frozen foods, while providing for ease of handling the products when hot. While the apparatus and methods of the subject disclosure have been shown and described with reference to preferred embodiments, those skilled in the art will readily appreciate that changes and/or modifications may be made thereto without departing from the scope of the subject disclosure.
Filing Document | Filing Date | Country | Kind |
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PCT/US2021/022660 | 3/17/2021 | WO |
Number | Date | Country | |
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62990876 | Mar 2020 | US |