INFLATABLE THERMAL PACKAGING STRUCTURE WITH MULTIPLE LINERS
A packaging structure includes an outer shell and a first inflatable liner attached to an interior surface of the outer shell. Air chambers of the first inflatable liner are in fluid communication with a valve. The packaging structure can also include a second inflatable liner attached to the first liner. Air chambers of the second inflatable liner are in fluid communication with the valve.
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The present application claims priority to U.S. Provisional Patent Application No. 61/328,101, filed on Apr. 26, 2010, the disclosure of which is hereby incorporated by reference in its entirety for all purposes.
BACKGROUND OF THE INVENTIONPackaging of materials is utilized in a variety of industries. Despite the progress made in packaging technology, there is a need in the art for improved methods and systems related to packaging of products.
SUMMARY OF THE INVENTIONEmbodiments of the present invention relate to packaging technology. In a particular embodiment, a packaging structure includes a first thermally insulating, inflatable liner to provide thermal protection for temperature sensitive and/or perishable products after inflation of the liner. The packaging structure may also include a second liner to provide a cushioning layer as an option to protect the products from mechanical shock. In a specific embodiment, a single valve is used to inflate both liners concurrently.
According to an embodiment of the present invention, a box is lined with multiple liners. A first liner that provides thermal insulation upon inflation can be an Airliner, available from the present assignee. The Airliner provides thermal protection for temperature sensitive and/or perishable products after inflation of the Airliner. The box could also be lined with a second liner that provides cushioning to absorb shocks.
According to embodiments of the present invention, a method is provided that is characterized by a process of forming one “rigid” thermal box via the inflation of the Airliner through a valve or entry point using, for example, a single step, eliminating one or more of the steps of forming the box, taping the bottom of the box, inserting the liner after inflation after folding the gussets, and the like.
A hard outer shell made of materials that provide mechanical rigidity is illustrated in
As illustrated in
In order to provide for both thermal insulation and mechanical insulation against shocks, dropping of the package, and the like, a second liner is provided to provide cushioning for the products stored in the package.
The liner for the cushioning chamber can be made using one or several films, including, but not limited to, LDPE, HDPE, Nylon, Surlyn, or the like. It is sealed or laminated to the first (thermal) liner. In order to provide for ease of assembly, both liners are inflated concurrently (e.g., at the same time) through a single valve or inflation entry point. Thus, a packaging product is provided that can be delivered as an integrated product, requiring only filling at a single valve to provide for both thermal and mechanical insulation.
Although embodiments of the present invention illustrated herein utilize both the first inflatable liner and the second inflatable liner inside the hard outer shell, other embodiments utilize only a single inflatable liner to provide thermal insulation for products stored or packaged in the packaging structure.
Claims
1. A packaging structure comprising:
- an outer shell;
- a first inflatable liner attached to an interior surface of the outer shell, wherein air chambers of the first inflatable liner are in fluid communication with a valve;
- a second inflatable liner attached to the first inflatable liner, wherein air chambers of the second inflatable liner are in fluid communication with the valve.
2. The packaging structure of claim 1 wherein the outer shell is rigid.
3. The packaging structure of claim 1 wherein the outer shell comprises at least one of a cardboard or plastic material.
4. The packaging structure of claim 1 wherein the first inflatable liner comprises at least one of a nylon, or plastic material.
5. The packaging structure of claim 1 wherein the first inflatable liner comprises a plurality of heat seals defining the air chambers.
6. The packaging structure of claim 5 wherein the air chambers of the first inflatable liner are a single chamber having multiple sections.
7. The packaging structure of claim 1 wherein the first inflatable liner is attached to the interior surface of the outer shell using a plurality of glue strips.
8. The packaging structure of claim 1 wherein the second inflatable liner is attached to the first inflatable liner by at least one of tape of glue.
9. The packaging structure of claim 1 wherein the second inflatable liner is disposed inside the first inflatable liner upon inflation.
10. A method of forming a thermal structure, the method comprising:
- providing a packaging structure including an outer shell;
- flowing a fluid through a valve to inflate a first inflatable liner attached to an inner surface of the outer shell; and
- flowing the fluid through the valve to inflate a second inflatable liner attached to the first inflatable liner.
11. The method of claim 10 wherein the fluid comprises air.
12. The method of claim 10 wherein the outer shell is rigid.
13. The method of claim 10 wherein the outer shell comprises at least one of a cardboard or plastic material.
14. The method of claim 10 wherein the first inflatable liner comprises at least one of a nylon, or plastic material.
15. The method of claim 10 wherein the first inflatable liner comprises a plurality of heat seals defining the air chambers.
16. The method of claim 10 wherein the air chambers of the first inflatable liner are a single chamber having multiple sections.
17. The method of claim 10 wherein the first inflatable liner is attached to the interior surface of the outer shell using a plurality of glue strips.
18. The method of claim 10 wherein the second inflatable liner is attached to the first inflatable liner by at least one of tape of glue.
19. The method of claim 10 wherein the second inflatable liner is disposed inside the first inflatable liner upon inflation.
Type: Application
Filed: Apr 25, 2011
Publication Date: Nov 24, 2011
Applicant: Coldpack, Inc. (San Diego, CA)
Inventor: Alice K. Duong (San Diego, CA)
Application Number: 13/093,776
International Classification: B65D 81/05 (20060101); B65B 3/04 (20060101);