This invention relates to a self-heating package for containing and heating a product such as a pre-moistened wipe. The heated, pre-moistened wipe can be dispensed from the package and used to clean parts of the human body or any other surfaces as desired.
Pre-moistened wipe(s) have been utilized to clean various surfaces. Examples include U.S. Pat. No. 4,666,621/CA Pat. No. 2,100,814 and CA Pat. No. 2,303,306. Previous pre-moistened wipe(s), for the purpose of cleaning the human body include U.S. Pat. No. 5,595,807. None of the afore mentioned include a heating agent for the purpose of providing a warm or hot cleaning material. One advantage of a heated pre-moistened wipe(s) is to avoid the sudden discomfort on initial contact with human skin. Another advantage is to enhance the cleaning experience of parts of the human body when a shower is unavailable. Yet another advantage of a heated pre-moistened wipe(s) is the fact that heat increases the efficacy of breaking down grease or oil compounds and loosening dirt.
Examples of heated packages include U.S. Pat. No. 4,559,921, U.S. Pat. No. 5,220,909, U.S. Pat. No. 4,823,769/CA Pat. No. 1,322,349, U.S. Pat. No. 4,819,612/CA Pat. No. 2,017,502, U.S. Pat. No. 4,809,673, and U.S. Pat. No. 5,465,707/CA Pat. No. 2,169,259. All of the aforementioned are self-heated exothermic packages designed to carry foodstuff within. In addition, all of the afore mentioned (with the exception of U.S. Pat. No. 5,465,707/CA Pat. No. 2,169,259) utilized rigid packaging for the purpose of storing and perpetuating the exothermic reaction.
Examples of flexible, chemical thermal bags are also known. Although they are comprised of flexible outer housing, they do not enclose any substance to be heated such as pre-moistened wipe(s). Examples include U.S. Pat. No. 4,856,651, U.S. Pat. No. 4,268,272, U.S. Pat. No. 3,874,504 and U.S. Pat. No. 4,995,217/U.S. Pat. No. 4,856,651/CA Pat. No. 1,278,478.
None of the afore mentioned references describes the novel enhancements to be mentioned hereinafter and defined as a self heating pre-moistened wipe(s) package. Moreover, they do not outline the advantages inherent within this design.
A self heating pre-moistened wipe(s) package unique in its design characteristics, constructed to enclose a pre-moistened wipe(s) immersed in a cleaning solution. Although applications are broad in scope, such a pre-moistened wipe is ideally suited for cleaning parts of the human body. A heated pre-moistened wipe can provide increased comfort when applied to human skin for cleaning parts of the human body. A heated pre-moistened wipe can improve the efficacy of the cleaning action both for the human body or any other relevant surface.
A package of wipes in accordance with the present invention can provide heated, pre-moistened wipes in a package that is relatively compact, less bulky, and relatively flexible which can improve storage during transport, in, for example, a purse or pocket. As well, the package of the present invention can be easily manufactured and therefore more practical. The self-heated pre-moistened wipes package of the present invention can provide a package with relatively little discarded packaging.
According to one aspect of the present invention, there is provided a package for storing and heating a product having a first sealable envelope having a first agent region located inside the first sealable envelope, the first agent region containing a first agent. The package includes a sealed bag located inside of the sealable envelope. The sealed bag is capable of being breached at a breach section allowing the second agent to react with the first agent generating heat within a heating region. The package also has a second sealable envelope for containing a product, a portion of the second sealable envelope being located within the heating region. The heat from the reaction heats the product located in the second sealable envelope. In the package, the first sealable envelope is compressible about the breach section of the sealed bag and contents of the first sealable envelope about the breach section of the sealed bag are flexible.
The second sealable envelope can include a product region for containing the product, and the product region can be located substantially within the heating region. The first and second sealable envelopes can be disposed on opposite sides of a barrier web. The sealed bag can include at least two independently breachable chambers, each chamber adapted to release an amount of the second agent when breached. The product can comprise a plurality of pre-moistened wipes, and the sealed bag can include a plurality of independently breachable chambers in correspondence to the plurality of pre-moistened wipes.
According to another aspect of the invention, a package for storing and heating a product includes a first sealable envelope having a first agent region located inside the first sealable envelope, the first agent region containing a first agent. The package further includes a sealed bag located inside the first sealable envelope, the sealed bag including at least one sealed chamber containing a second agent, each chamber of the at least one sealed chamber capable of being independently breached at a breach section allowing an amount of the second agent to react with the first agent generating heat within a heating region. The package has a second sealable envelope comprising a region for containing the product, a portion of the second sealable envelope being located within the heating region, the heat from the reaction heating the product located in the heating region. The first sealable envelope is compressible about each respective breach section of each of the at least one sealed chamber.
According to another aspect of the present invention, a package for storing and heating a pre-moistened wipe product includes a first sealable envelope having a first agent region and a second region located inside the first sealable envelope, the first region containing a first agent, the package having a sealed bag located in the second region of the first sealable envelope, the sealed bag containing a second agent, the sealed bag capable of being breached at a breach section allowing the second agent to flow from the sealed bag to react with the first agent generating heat within a heating region. The package has a second sealable envelope having a region for containing the product, a portion of the second sealable envelope being located within the heating region, the heat from the reaction heating the pre-moistened wipe product located in the heating region. The first sealable envelope is compressible about the breach section of the sealed bag, contents of the first sealable envelope about the breach section of the sealed bag being flexible, and the sealed bag being located about the second region and the first agent being located about the first region enabling gravity to assist flow of the second agent towards said first agent when the sealed bag is breached.
Other objectives of the present invention may become more apparent as said invention is described in greater detail in the following descriptions and drawings.
In the description and diagrams that follow, specific terminology will be used in describing the details of the present invention for the sake of clarity. It is understood that these terms and/or phrases are not intended to be limiting in any way, shape or form, in their application to the details of construction and to the arrangements of the components set forth in the following description and illustrations. It is understood that in this patent the words “bladder” and “chamber” or their plural forms are understood to denote the same meaning. It is also understood that the terminology used includes all technical equivalents, which are used in a similar manner to accomplish a similar purpose. As such, it is noted and understood by all those skilled in the art that the basic idea of the present invention described in detail in this disclosure may easily be utilized as a basis for the designing of other structures and systems for carrying out similar purposes. It is also understood therefore that this patent includes all such variations, insofar as they do not depart from the basic idea and scope of the present invention which is a self-heating pre-moistened wipe(s) package.
The present invention relates a novel new idea in the form of a pre-moistened wipe(s) that is not only heated, but self-heated in an insulated exothermic package that is flexible and disposable.
Ideally, the outer pouch (10) can be formed of a sheet material that is flexible, liquid impermeable and somewhat heat resistant. It can be opaque and can be made of a laminated material such as blax nylon, polyester such as MYLAR®, polyethylene, polypropylene, aluminum, aluminized polymer film and other conventional plastic or other packaging materials such as rubber, vinyl, vinyl-coated fabric, polyethylene and laminated aluminum foil suitable for containing heated reagents. The outer pouch (10) can include a thermal insulated layer (12) which may be of a fine cell or cross-linked polyethylene or other suitable material. The thermal insulated layer (12) can define an inner surface of the outer pouch (10). The composite material sheet can be folded together with the folded edge becoming the bottom of the outer pouch (10). The sides are held together preferably with weld seams (11) to form the complete outer pouch (10).
The inner pouch (13) for containing the at least one pre-moistened wipe (6) is disposed substantially within the outer pouch (10). The inner pouch (13) can be formed from a heat resistant, durable, liquid impermeable sheet material folded together. The folded edge 10A can become the bottom of the inner pouch (13). In the embodiment illustrated, liquid-tight weld seams (14) are made along the length of the sides to form the pouch (13), which is adapted to hold the pre-moistened wipes (6). The wipes (6) may be of any size, shape, construction, and composition depending on the manufacturer's design requirements and desires. The pre-moistened wipes (6) can be impregnated with any safe, effective, cleaning solution specifically suited to its application (e.g. cleaning portions of the human body). Furthermore, the pre-moistened wipes (6) can be folded over several times, few times or not at all, in accordance with the manufacturer's design requirements and objectives, and in order to, for example, maintain rigidity, flatness, or compactness of the package (5) for design requirements.
The inner pouch (13) is adapted to be opened for dispensing one or more of the wipes (6) from the package (5). In the embodiment illustrated, the inner pouch (13) has a top edge (30) that is located outside of the perimeter of the outer pouch (10), i.e., above the upper edge of the outer pouch (10). The inner pouch (13) can be opened by pulling on a tear strip (32) provided in the inner pouch (13) adjacent the top edge (30). Other methods for opening the inner pouch (13) can also be employed, such as, for example, but not limited to, a plastic zipper or an adhesive strip provided in the inner pouch (13), near the upper edge of the outer pouch (10). Further, in the illustrated embodiment, the inside surface of the outer pouch (10) is sealed against the outside surface of the inner pouch (13) by weld seams (31). Adhesive strips may also be used in place of weld seams (31). The weld seams (31) can facilitate sealing closed the outer pouch (10) and preventing cross contamination of the pre-moistened wipes (6) with the first and second agents (22) and (19) when the inner pouch (13) is opened. In addition, weld seams (31) (or adhesive strips) can prevent heat loss during an exothermic reaction (described subsequently herein).
In the embodiment illustrated, an intermediate space (7) is provided between the inside surface of the thermal insulating layer (12) of the outer pouch (10) and the outside surface of the inner pouch (13). A least a portion of the heating elements (25) can be provided within the intermediate space (7). The heating elements include the first agent (22) and the second agent (19). The second agent (19) is, in the illustrated embodiment, provided in a sealed bag or solvent chamber (20). The solvent chamber (20) can be in the form of a bag or bladder made of some liquid impermeable, rupturable plastic-like material. At least a portion of the solvent chamber (20) can define a second agent region (9) for containing the second agent (19). The second agent (19) can be in the form of a solvent adapted to react with the first agent (22) in an exothermic reaction. In the embodiment illustrated, the solvent chamber (20) is sized to fit snugly in the intermediate space (7) and is sealed against the inside of said thermal insulated layer (12) by liquid tight weld seams (23). The solvent chamber (20) can be constructed in such a manner that when specific pressure is applied to the package (8) (in between fingers or against hard surface) the chamber (20) ruptures, allowing the second agent (19) to come into contact with the first agent (22), thus triggering the exothermic reaction. The chamber (20) can be adapted so that pressure against or along the bag/chamber (20) ruptures, perforates, or otherwise breaches the bag/chamber (20) in a breach section (17), while leaving the remaining surfaces of the chamber (20), and the surfaces of the outer pouch (10) and inner pouch (13) surrounding the product and the intermediate space intact. The breach section (17) can be along a seam, weld line, line of weakness, or any breachable surface of the chamber (20). The solvent chamber (20) can be comprised of any of a number of functional configurations. In a preferred embodiment, the chamber (20) comprises a flexible, rupturable, polymer like material containing the second agent (19), and is adapted to be manually ruptured.
The first agent (22) of the heating elements (25) can generally be in the form of an exothermic reagent. The first agent (22) can be magnesium oxide or some other suitable chemical and can be in the form of a powder, pad, gel or even liquid. In the embodiment illustrated, the first agent (22) is in the form of a powder that is enclosed in another bag called a first agent bag (21) (also referred to as an absorbent envelope (21) sometimes herein). At least a portion of the first agent bag (21) can define at least a portion of the first agent region (8). The first agent bag (21) can, but need not, fit snugly in the intermediate space (7). The first agent bag (21) can be attached to the outside of the inner package (13) by, for example, weld seams (24). The first agent bag (21) can be constructed of a porous, absorbent material that can facilitate an exothermic reaction between the first and second agents by absorbing and/or transporting the second agent (19) in solvent form by capillary action, and bringing the second agent (19) in contact with the first agent (22) within the first agent bag (21). The absorbent envelope (21) can be made from filter paper or similar material. The second agent (19) can be in the form of a pad, and the absorbent envelope (21) can be a sheet of absorbent material wrapped around such exothermic pad. The reagent (22) can be a powder, and the powder can be sealed within the absorbent envelope (21). The reagent (22) can be a liquid or gel, and the exothermic reagent (22) need not be contained in a first agent bag (21) but can be permitted to permeate throughout the intermediate space (7), between the thermal insulated layer (12) and the inner package (13).
The package (5) can be presented to a user with the wipes (6), first agent (22), and second agent (19) in their respective compartments of the package (5). The package (5) is generally flexible, compressible, and can conform in shape to a variety of storage or transport space limitations. The package (5) is flexible about the section where the solvent bag (20) is adapted to rupture, and can be, for example, rolled up along its width or length to facilitate storage or transport. To use the package (5), a user can apply specific pressure to the outer pouch (10) so that the solvent bag (20) is ruptured along the breach section, thus triggering the heating of the wipes (6) by allowing the first and second agents to interact with each other and generate heat in a heating region by means of an exothermic reaction. At least a potion of the inner pouch (13) holding the wipes (6) is disposed in the heating region, so that the wipes (6) become warmed by exposure to the heat of the exothermic reaction. After waiting a brief period to allow the wipes (6) to warm up to a desired amount, the inner pouch (13) can be opened and one or more pre-heated wipes (6) can be dispensed from the package (5).
As previously stated,
Another embodiment of a package (205) in accordance with the present invention can be seen in
Referring now to
While preferred embodiments of the invention have been described herein in detail, it is to be understood that this description is by way of example only, and is not intended to be limiting. The full scope of the invention is to determine from reference to the appended claims.
Number | Date | Country | Kind |
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2,346,223 | May 2001 | CA | national |
This application is a continuation-in-part of U.S. application Ser. No. 09/961,178, which was filed on Sep. 24, 2001, and the entire contents of which is hereby incorporated by reference.
Number | Date | Country | |
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Parent | 09961178 | Sep 2001 | US |
Child | 11120944 | May 2005 | US |