The present invention relates generally to packaging and, more particularly, to packages, and methods for manufacturing and using packages, having a hinging valve mechanism.
More and more people are ordering take-out or delivery food service. Some pick up the food and some have it delivered to their home, work, or gathering. Delivering the food product can present issues, such as keeping it hot/cold and fresh. Soda, on the other hand, has other issues often preventing it from getting to the destination as intended.
Carbonated drinks that come from a soda fountain or other means, gas off, especially as they start to warm up. When bouncing around during travel, e.g., in a vehicle, the carbonation can come out of the liquid even faster, building up an excessive amount of pressure within the container that can cause the container to expand, rupture, or explode. This is typically addressed by providing the carbonated drink in a heavy-duty container that can withstand the internal pressure that builds up as the carbonation escapes the liquid. Unfortunately, these heavier containers are not very environmentally friendly and are, therefore, not an ideal solution.
Flexible pouches, especially those made from recyclable, compostable, or biodegradable materials, would be the most beneficial. However, they are not typically heavy enough to handle the inside pressure created from the gassing off of the carbonation. There have been attempts to still use flexible packages made of different plastics or other flexible materials, but in order to keep them from exploding as the pressure builds up, they have a rigid pressure relief valve sealed into the pouch, typically near the top. The valves are not only expensive, but the applying of these structures to the pouch further increases costs and manufacturing complexity. These solutions are also not typically recyclable, compostable, or biodegradable. The rigid valves do work, when placed near the top of a pouch, such that as the pressure from the gas builds up, it is released through the valve so the pouch does not explode. The rigid valves are also designed so that if the pouch were to tip over in transit, the liquid does not leak out through them, or only a minimal amount may leak out. Of course, when the liquid is up against these valves, they no longer work to release the gas either.
As a result, there is a need for a package that substantially solves the above-referenced problems with conventional package designs, configurations, and manufacturing methods, wherein the pouch or package does not include an expensive and non-biodegradable rigid valve.
Embodiments of the present invention include a pouch or package (e.g., flexible package) having a flexible and hingeable valve mechanism. The present invention provides a solution to conventional packages and methods by using both the gas and the liquid, with one or more channels within the seal (or other region) of a pouch allowing the gas to escape when pressure builds up, and yet close off if the package is tipped over so liquids cannot escape through the same channels.
The present invention can include a hingeable valve provided to a package or pouch, e.g., a package top seal, creating one or more channels through the top seal of the pouch and then, proximate to the one or more channels, making or forming a pocket within the same seal, or proximate the seal area, which is cut or otherwise defined around both sides. This results in the pocket hinging, thereby providing a working valve that will not leak. When the pouch is filled with carbonated product and sealed shut, the gas can start to migrate out of the liquid and into the top of the pouch. The gas, being lighter than liquid or air, will go to the top of the pouch and fill the pocket that was formed in the top seal. As the pocket is filled with gas, it can help prevent the top seal from accidentally kinking and allow other gas pressure to flow freely through the one or more channels that were created within the top seal and located in proximity to the pocket. If the pouch is accidentally tipped over, the pocket will fill with the liquid content of the pouch and the weight of the liquid within the pocket will cause it to fall out of the seal on the hinge, which in turn will kink the one or more channels in the seal near the pocket. Once the one or more channels are kinked, the liquid will be prevented from passing through or leaking out of the pouch.
In various embodiments, the valve mechanism can be included on a side of the package, at the bottom, intermediate the bottom and top, or at any other portion of the package. In addition, the valve mechanism can be included in a non-sealed portion of the package.
In addition to the hinged pocket and the one or more channels described above, different shaped and sized areas in proximity to the pocket and channels can be made or formed to further help the ease in which the film kinks at the channels. Slits, holes, shaped features, etc. in select areas of the seal proximate to the pocket or channels can also assist with the kinking process when desired.
In various embodiments, the hingeable valve can be formed or made separately and then added to a portion of the package, such as the top seal area.
The above summary is not intended to describe each illustrated embodiment, claimed embodiment or implementation of the invention. The detailed technology and preferred embodiments implemented for the subject invention are described in the following paragraphs accompanying the appended drawings for people skilled in this field to well appreciate the features of the claimed invention. It is understood that the features mentioned hereinbefore and those to be commented on hereinafter may be used not only in the specified combinations, but also in other combinations or in isolation, without departing from the scope of the present invention.
The invention may be more completely understood in consideration of the following detailed description of various embodiments of the invention in connection with the accompanying drawings, in which:
While the invention is amenable to various modifications and alternative forms, specifics thereof have been shown by way of example in the drawings and will be described in detail. It should be understood, however, that the intention is not to limit the invention to the particular embodiments described. On the contrary, the invention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims. For illustrative purposes, hatching or shading in the figures is generally provided to demonstrate sealed or crushed portions and/or integrated devices for the package.
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References to “top,” “bottom,” “front,” “side,” “back” and the like are for illustrative purposes only and are not meant to limit the scope of the disclosed invention.
The package according to the invention can include packages constructed, in whole or in part, of flexible, rigid, semi-rigid, or semi-flexible materials or panels. Briefly, the package panel portions are generally constructed of flexible sheet material such as polyethylene, polyester, metal foil, polypropylene, or polyethylenes or polypropylenes laminated with other materials such as nylon, polyester, and like films. To provide for increased barrier properties, embodiments can use composite or laminate layers of said materials and material of the like. Generally, in such composite or laminate embodiments, a material having preferred sealing characteristics can be joined, bonded or laminated to a material having a different preferred characteristic (e.g., beneficial oxygen barrier properties). Regardless, single sheets, composites/laminates, and a myriad of other materials and techniques known to one skilled in the art may be implemented based on particular usage and manufacturing needs without deviating from the spirit and scope of the present invention. The present invention, in certain embodiments, permits the flexible package to be made using less expensive or cheaper materials than would otherwise be necessary. Various portions or areas of the package or pouch can be constructed of recyclable, compostable, or biodegradable materials.
In various embodiments, the hingeable valve 100 can be formed or made separately and then added or otherwise attached to a portion of the package, such as the top seal area. The separate hingeable valve 100 can be added to the package via heat sealing, adhesives, and the like.
In various embodiments, the front panel portion 12 and the back panel portion 14 will be formed of one contiguous web material. In alternative embodiments, at least one of the panel portions can be distinct web materials joined or sealed to other respective panel portions to form the package 10 of the present invention. For instance, the front panel portion 12 and the back panel portion 14 can be joined to each other from distinct non-contiguous web sheets of material, and one of the panel portions 12-16 can further extend to define the bottom panel portion 15. The bottom panel portion 15 in the various configurations forming a stand-up pouch can include a gusset known to those skilled in the art to further promote operative expansion and contraction of the package 10 and its respective capacity in accordance with the receipt and removal of material within the package 10.
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The pinch or kink areas 106 are configured such that if the pouch 10 is tipped over (e.g., accidentally or intentionally), the pocket 104 will fill with the liquid content C of the pouch and the weight of the liquid C within the pocket 104 will cause it to displace or otherwise fall out of the seal at the hinge 106. This, in turn, will kink or close the one or more channels 102 in the seal 20 near the pocket 104. Once the one or more channels 102 are kinked, the liquid C cannot pass through the one or more channels 102 or leak out of the pouch 10. The areas 106 can include shaped sections, kink lines, structurally weakened pathways (e.g., pressure, heat, etc.), segmented portions, apertures, slits, laser etching, perforations, and the like, to promote hinging and kinking of the one or more channels 102 when the pocket 104 is displaced out away from the package 10 and/or the top seal 20.
The package 10 according to the invention can include packages constructed, in whole or in part, of flexible, rigid, semi-rigid, or semi-flexible materials or panels. The packages 10 can include various closure devices, zippers, handles, graphics, and the like.
The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it is, therefore, desired that the present embodiment be considered in all respects as illustrative and not restrictive. Similarly, the above-described methods and techniques for forming the present invention are illustrative processes and are not intended to limit the methods of manufacturing/forming the present invention to those specifically defined herein. A myriad of various unspecified steps and procedures can be performed to create or form the inventive packages. Further, features and aspects of the various embodiments described herein can be combined to form additional embodiments within the scope of the invention even if such combination is not specifically described herein.
References to front, back and side panels for the package and package formation embodiments described herein are provided to facilitate an understanding of orientation and direction and are not intended to be limiting. For instance, closure devices, seals, and other structures or portions of the package, can be provided to or along any portion of the package regardless of the references herein to front, back, side, bottom and the like.
This application claims priority to and the benefit of U.S. Provisional Patent Application No. 63/067,457, filed Aug. 19, 2020, which is fully incorporated herein by reference.
Number | Date | Country | |
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63067457 | Aug 2020 | US |