NATURAL FIBER-BASED INSULATED PANEL AND TEMPERATURE CONTROLLED SHIPPING SYSTEM
20210347550 · 2021-11-11
Inventors
Cpc classification
B65D81/3823
PERFORMING OPERATIONS; TRANSPORTING
B65D81/3858
PERFORMING OPERATIONS; TRANSPORTING
B65D81/025
PERFORMING OPERATIONS; TRANSPORTING
B65D2571/00055
PERFORMING OPERATIONS; TRANSPORTING
B65D71/0088
PERFORMING OPERATIONS; TRANSPORTING
B65D71/0096
PERFORMING OPERATIONS; TRANSPORTING
International classification
B65D81/18
PERFORMING OPERATIONS; TRANSPORTING
B65D71/00
PERFORMING OPERATIONS; TRANSPORTING
B65D81/02
PERFORMING OPERATIONS; TRANSPORTING
Abstract
A natural fiber-based insulating panel system to facilitate shipping. One or more natural fiber-based panels are inserted into the interior of a shipping container to encapsulate the payload, or on the exterior of the shipping container to encapsulate the shipping container and payload. A film or membrane may encapsulate one or more of the insulating panels. Micro perforations may be present in the membrane to facilitate the capture of moisture from the interior.
Claims
1. A system for maintaining temperature and protecting a payload during shipment and/or storage, the system comprising: one or more panels, wherein each of the one or more panels is composed of an insulating material that includes a natural fiber and a binder; and the one or more panels having a shape that coincides with the shape of a payload; and once the one or more panels are attached around or folded around the payload, the payload is substantially encapsulated within the one or more panels.
2. The system of claim 1, wherein the insulating material includes hemp fibers.
3. The system of claim 1, wherein the insulating material includes hemp fibers in a quantity that is substantially greater by volume than the quantity of the binder.
4. The system of claim 3, wherein the insulating material is at least 40% hemp fiber and approximately 10% binder.
5. The system of claim 1, wherein one or more of the panels define a void for receiving a phase changing material (PCM).
6. The system of claim 1, wherein each particular panel of the one or more panels can be attached to another one or more of the one or more panels along each edges of particular panel.
7. The system of claim 1, wherein one or more of the one or more panels is encapsulated in a film.
8. The system of claim 7, wherein the film encapsulating one or more of the one or more panels includes a plurality of micro-perforations along at least one side of the one or more panels.
9. The system of claim 1, further comprising a container that is sized to receive the payload encapsulated by the one or more panels.
10. The system of claim 1, further comprising a container that is sized to receive the payload prior to the one or more panels being attached or folded around the payload.
11. A method for maintaining temperature and protecting a payload during shipment and/or storage, the method comprising: fabricating one or more panels, wherein each of the one or more panels is composed of an insulating material that includes a natural fiber and a binder; and shaping the one or more panels such that the shape of the one or more panels coincide with the shape of a payload; and attaching or folding the one or more panels around the payload such that the payload is substantially encapsulated within the one or more panels.
12. The method of claim 11, wherein the action of fabricating the one or more panels further comprising fabricating the one or more panels out of hemp fibers.
13. The method of claim 11, wherein the action of fabricating the one or more panels further comprising fabricating the one or more panels out of hemp fibers such that the quantify of hemp fibers is substantially greater by volume than the quantity of the binder.
14. The method of claim 13, wherein the action of fabricating the one or more panels out of hemp fibers such that the quantify of hemp fibers is substantially greater by volume than the quantity of the binder further comprises using at least 40% hemp fiber and approximately 10% binder.
15. The method of claim 11, further comprising fabricating the one or more panels such that one or more of the one or more panels define a void for receiving a phase changing material (PCM) and placing a PCM into the void of the one or more panels.
16. The method of claim 11, further comprising attaching each perimeter edge of a particular panel of the one or more panels to the perimeter edge of another one or more of the one or more.
17. The method of claim 11, further comprising encapsulating one or more of the one or more panels in a film.
18. The method of claim 17, further comprising creating a plurality of micro-perforations along at least one surface of at least one or more of the one or more panels.
19. The method of claim 11, further comprising placing the payload encapsulated with the one or more panels into a container.
20. The method of claim 1, further comprising placing the payload into a container prior to the one or more panels being attached or folded around the payload.
Description
BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING
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DETAILED DESCRIPTION OF VARIOUS EMBODIMENTS
[0035] The present invention, as well as features and aspects thereof, is directed towards providing a hemp and/or other natural fiber-based insulated panel or panel system, as well as a temperature controlled shipping and/or short term storage system utilizing one or more of the insulating panels.
[0036] An exemplary embodiment of a device or shipping/storage container may include the following components: one or more properly sized, shape-stable insulating mats or panels made from natural fibers or hemp fibers and binders, that may be wholly or partially covered with a recyclable and/or biodegradable, perforated outer film, and assembled into one or more shapes that fit snugly together when placed into the interior or onto the exterior of a shipping container or assembly of several shipping containers or a payload. The result is a continuous or nearly continuous insulating layer that reduces the rate of heat transfer between the items in the interior of the container and the environment outside the container. The system thus better preserves the quality of temperature-sensitive goods that may be shipped or stored utilizing the device. The combination of the natural fiber or hemp insulating panels and the shipping container create a unique system that provides a superior system for transportation of thermally-sensitive goods. The addition of cold-packs (typically containing a phase change material such as frozen water with certain chemical additives, or frozen CO2) into the interior of the shipping container creates a system that can maintain a favorable temperature inside the shipping container for an extended period of time. Likewise, heat packs, such as packets containing iron, activated carbon and water, may be used to maintain the items at a warm temperature.
[0037] By using hemp and/or other natural fiber-based insulation, this shipping system is recyclable, biodegradable, and is more environmentally friendly than other shipping systems.
[0038] It should further be noted that, due to the moisture absorbing properties of the natural fiber or hemp insulation being used, and the presence of perforations in the film covering the natural fiber or hemp insulating panels in whole or in part, the insulating mats reduce the accumulation of moisture on the inside of the shipping container that may otherwise take place if other insulating materials are used. This in turn, leads to better preservation of the quality of the goods inside of the shipping container during transportation.
[0039] It should also be noted that unlike some other insulating materials, the natural fiber or hemp fiber insulation helps absorb shocks and vibration occurring during transportation. Advantageously, this aspect of the various embodiments provides an improved protection of the goods being transported.
[0040] It should also be noted that should the natural fiber or hemp insulation become moist or wet, the insulating properties of natural fiber or hemp insulation degrade much less than other types of bio-based insulation. Advantageously, this can result in better thermal protection of the good being transported.
[0041] It should also be noted that because of the semi-ridged structure of the natural fiber or hemp insulation, stable cut-outs can be made in the hemp insulation which will allow for a customized space in which the goods being transported can be placed. These specialized cut-outs may provide for easier assembly of the goods into the package prior to shipping and also better protection of the goods during transport. Furthermore, the cut-outs from the hemp panels can be readily put back into the feed-stock for manufacture of additional mats with almost zero wasted material.
[0042] It should also be noted that the film placed on the outside of the natural fiber or hemp insulation may include a reflective surface on one or both sides to enhance the insulating properties of the insulating mat or panel.
[0043] It should also be noted that the use of a film or covering on the outside of the natural fiber or hemp insulating mat is not a requirement. The natural fiber or hemp mats or panels without a covering have excellent insulating properties.
[0044] It should also be noted that the performance of the shipping system may be further enhanced by placing the temperature sensitive goods along with the phase change materials inside a sealable bag before placing the goods inside the insulated shipping container.
[0045] It should also be noted for embodiments that specifically include hemp, that because of the nature of hemp cultivation and hemp fiber processing, the hemp insulation requires fewer acres of cultivated land or space than other fibers, such as cotton, to yield a similar amount of usable insulation (same area of insulation with same insulating properties). When compared with the production of other insulation materials, for each unit of usable insulation, hemp sequesters more CO2, uses fewer chemicals, uses less water and creates less chemical pollution. This may also be true for other natural plants for producing natural fibers.
[0046] An exemplary form of performing the creation method associated with the disclosed device may include the following steps: natural fiber or hemp fibers manufactured from sustainably grown plants, mechanically processed into fibers using little to no chemicals (or an unsubstantial amount of chemicals), with such fibers then combined with a quantity and type of binder chemical so that the resulting fiber-binder mix is compostable and recyclable, with that same fiber-binder mix then processed using heat, pressure and other means into a shape-stable insulating mat. One or more of these insulating mats are then trimmed, optionally covered in whole or in part with a breathable exterior film and assembled into one or more shapes that fit tightly together when placed into the interior or onto the exterior of a shipping container, or assembly of several shipping containers or payload. The result is a continuous or nearly continuous insulating layer that reduces the rate of heat transfer between the items on the interior of the container and the environment outside container.
[0047] Referring now to figures in which like labels represent like elements throughout the several views, further exemplary embodiments, functions, aspects and characteristics of the various embodiments are presented.
[0048]
[0049] There are several commonly used phase-change materials within the shipping industry, and each comes with its own benefits and drawbacks. It should be noted that a PCM alone is not effective in maintaining temperature, as the PCM should be utilized in conjunction with a packaging and insulation system. As a participant in the temperature regulator for packaging systems, however, it's important to choose a PCM carefully. For example, the following considerations should be examined in selecting a PCM:
[0050] If a payload needs to be kept at a particular temperature or temperature range, such as at 14° C., with acceptable excursions ranging from 11° C. to 17° C., a PCM should be selected to maintain the temperature within that range.
[0051] If the payload requires a consistent temperature for a particular period of time, such as 24 to 48 hours or if the payload has an extended travel/storage period, such as 120 hours, a PCM should be selected to that meets these characteristics.
[0052] If the payload vibration or shack sensitive, special packaging solutions may be examined to provide sufficient room for and protection of the payload for the duration of the trip. For example, using dry ice as a PCM may be effective for materials that need to be kept frozen (below −18° C.). However, once the ice sublimates, it results in creating room for the payload to move around and possibly become damaged.
[0053] Creating contours or cut-outs in the insulating panels can advantageously alleviate issues that may arise in this scenario.
[0054] If the cost of shipment is a concern, a packaging solution or PCM as a more expensive option may not be the best suited for the particular shipping needs. Reusable solutions also may appear more expensive, but based on cost per use may be more affordable.
[0055] If environmental impact is a concern, an appropriate PCM can be selected. For instance, determining what the PCM composed of, and if it is renewable. Further, it should be determined if the PCM is toxic or non-toxic and if it can be used repeatedly.
[0056] There are several types of technology utilized for PCMs. A few non-limiting examples include:
[0057] Water-based gel packs. Water-based gel packs are among the most inexpensive forms of PCMs available. However, and gel packs can sometimes provide inconsistent temperature control. Gel packs also may need to be conditioned hours before use to avoid thermally shocking the payload. They are, however, non-toxic, and intact gel packs may be used several times.
[0058] Dry ice (frozen CO2). This PCM option is also inexpensive and readily available (but not reusable). Dry ice works well with deep frozen payloads traveling short distances. Using dry ice as a PCM requires careful packing to ensure payloads remain safe even as the dry ice sublimates. Thus, the use of cut-outs or contours suitable for the payload may be required.
[0059] Vegetable oil-based PCMs. This PCM technology can achieve virtually any temperature range and maintain it for extended durations of time. Vegetable oil-based PCMs are also biodegradable, non-toxic, and experience no thermal degradation after many uses.
[0060] Petroleum-based PCMs are derived from crude oil. The cost of this PCM technology thus fluctuates with the price of crude oil similar to the price of gasoline. Depending on the petroleum derivative used to create the PCM, most are toxic and thus, disposal of them may be difficult.
[0061] Heavy water (deuterium oxide). This PCM technology is very useful for refrigerated payloads (such as items that need to be maintained at a range of 2−8° C.). The heavy water PCMs freeze at 3.82° C. While this technology is quite effective as a PCM, it must be used with caution, may be difficult to obtain and can be costly.
[0062] Eutectic salts. A generic term for many materials that contain a salt in solution at a concentration that yields the lowest freezing point, eutectic salts can vary in safety, price, and effectiveness, based on their composition. There may also be disposal or customs issues, based on the material used.
[0063] One or more of the insulating panels may or may not be encapsulated, in whole or in part, in a plastic film or a film made of other materials, and the film may be perforated or not. In one particular and illustrative, yet non-limiting, embodiment of the 2-panel system 100, the unfolded insulating panel 120 may have a length of approximately 35 inches, a width of approximately 12 inches and a thickness of approximately 1.5 inches whereas the unfolded insulating panel 130 may have a length of approximately 32 inches, a width of approximately 9 inches and a thickness of approximately 1.5 inches. Of course, these measurements are merely illustrative and insulating panels of any length, width and thickness that include the features described herein are intended to be within the scope of the various embodiments of the invention and disclosure, which has many different embodiments. In this and all other embodiments, a material such as an adhesive or a device such as a hook and loop material (eg, VELCRO) may be used along the edges where the insulating panels meet so as to minimize any gaps between the insulating panels. In other embodiments, at locations where an edge of a first panel rest on the surface of a second panel, a groove can be formed in the surface of the second panel so that the edge of the first panel can rest within the groove creating a tongue-in-groove construction. Further, the adhesive or loop and hook material may also be applied to the edge and groove to further secure the panels in place. The payload 140 is shown for illustrative purposes and is not part of the 2-panel system.
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[0072] As previously described, the insulating panels may be held together or joined in a variety of manners. The use of adhesive or hook and loop (VELCRO) materials have been described. In addition, the use of tongue and groove type connections have been described as being molded, carved or cut into the panels to create a connection. Further, the use of tabs and spaces can be utilized such that the tabs of a panel align with the spaces of another panel, and vice versa, thereby creating a connection. Other techniques may also be used including bio-degradable tape, fasteners, pins, etc.
[0073] In some embodiments, the container may be constructed to include pockets on the interior or exterior. These pockets can also be used to receive and securely hold the insulating panels in place. It should also be appreciated that in some embodiments, the insulating panels, when assembled and secured, can operate as the shipping container as well. In such embodiments a water resistant film can be applied to the exterior of the insulating panels to further protect the contents.
[0074] While the various embodiments have been described as predominantly rectangular cubes in shape, it should be appreciated that the present invention could be applied in any shape, including spherical, orbed, pyramidal, tubular, etc. The various panels may be created in a mold, extruded or carved from larger sections of material.
[0075] Different features, variations and multiple different embodiments have been shown and described with various details. What has been described in this application at times in terms of specific embodiments is done for illustrative purposes only and without the intent to limit or suggest that what has been conceived is only one particular embodiment or specific embodiments. It is to be understood that this disclosure is not limited to any single specific embodiments or enumerated variations. Many modifications, variations and other embodiments will come to mind of those skilled in the art, and which are intended to be and are in fact covered by this disclosure. It is indeed intended that the scope of this disclosure should be determined by a proper legal interpretation and construction of the disclosure, including equivalents, as understood by those of skill in the art relying upon the complete disclosure present at the time of filing.
[0076] In the description and claims of the present application, each of the verbs, “comprise”, “include” and “have”, and conjugates thereof, are used to indicate that the object or objects of the verb are not necessarily a complete listing of members, components, elements, or parts of the subject or subjects of the verb.
[0077] The present invention has been described using detailed descriptions of embodiments thereof that are provided by way of example and are not intended to limit the scope of the invention. The described embodiments comprise different features, not all of which are required in all embodiments of the invention. Some embodiments of the present invention utilize only some of the features or possible combinations of the features. Variations of embodiments of the present invention that are described and embodiments of the present invention comprising different combinations of features noted in the described embodiments will occur to persons of the art.
[0078] It will be appreciated by persons skilled in the art that the present invention is not limited by what has been particularly shown and described herein above. Rather the scope of the invention is defined by the claims that follow.