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Publication numberUS20020174863 A1
Publication typeApplication
Application numberUS 09/961,178
Publication dateNov 28, 2002
Filing dateSep 24, 2001
Priority dateMay 25, 2001
Also published asCA2346223A1, CA2346223C, US20050224388
Publication number09961178, 961178, US 2002/0174863 A1, US 2002/174863 A1, US 20020174863 A1, US 20020174863A1, US 2002174863 A1, US 2002174863A1, US-A1-20020174863, US-A1-2002174863, US2002/0174863A1, US2002/174863A1, US20020174863 A1, US20020174863A1, US2002174863 A1, US2002174863A1
InventorsJerko Saric, Ivan Sestak
Original AssigneeJerko Saric, Ivan Sestak
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Unknown
US 20020174863 A1
Abstract
A self heating pre-moistened wipe(s) package (10) includes a pre-moistened wipe(s) to be heated. The pre-moistened wipe(s) can be of variable size, shape, thickness and material, impregnated with a cleaning solution depending on the application. Within said outer package (10) is a thermal insulated layer (11). Enclosed in said packaging is a solvent activated exothermic chemical pad, powder, liquid or gel, enclosed in an absorbent envelope (21), a bag containing solvent (20) and a pouch for a pre-moistened wipe(s) (13). Enclosed within said package is a trigger mechanism to initiate the reaction either through a pull-tab means or through a pressure/rupturing means. Said trigger mechanism is affixed to said solvent bag (20) so that when triggered, the solvent within can flow out to trigger the exothermic reaction.
Images(8)
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Claims(20)
Having described our invention, we claim:
1. A self heating pre-moistened wipe(s) package comprising:
(a) an outer flexible, thermal insulated, liquid impermeable sheet with liquid tight seams;
(b) an inner pouch formed between said outer sheet and a heat resistant, durable, liquid impermeable sheet material with liquid tight seams containing a pre-moistened wipe(s) and cleaning solution;
(c) an exothermic pack enclosed in the space between said outer sheet and said inner pouch; said inner pouch containing the pre-moistened wipe(s) and cleaning solution, said exothermic pack contains an exothermic reagent activated by a solvent;
(d) a solvent bag, said solvent bag affixed to a trigger mechanism means, where said trigger mechanism means is dimensioned to fit within said pre-moistened wipe(s) package space, said solvent bag and said trigger mechanism means enclosed in said space between said outer thermal insulated sheet and said inner pouch;
(e) said trigger mechanism means including a means for rupturing said solvent bag when pressed, the escaping solvent contacting said exothermic pack and thereby initiating an exothermic reaction to heat the enclosed pre-moistened wipe(s), said trigger mechanism comprising of two separate compartments divided by a liquid impermeable film into an upper and lower compartment; said lower compartment contains a body of fuel that exothermically reacts with said solvent; and said upper compartment is formed as a chamber under said liquid impermeable film, a body of solvent is received in said chamber whereby on rupture of said chamber the reagents in the said compartments mix and exothermically react;
2. A self heating pre-moistened wipe(s) package comprising:
(a) an outer flexible, thermal insulated, liquid impermeable sheet with liquid tight seams;
(b) an inner pouch formed between said outer sheet and a heat resistant, durable, liquid impermeable sheet material with liquid tight seams containing a pre-moistened wipe(s) and cleaning solution;
(c) an exothermic pack enclosed in the space between said outer sheet and said inner pouch, said inner pouch containing the pre-moistened wipe(s) and cleaning solution, said exothermic pack contains an exothermic reagent activated by a solvent;
(d) a solvent bag, said solvent bag affixed to a trigger mechanism means, where said trigger mechanism means includes a pull-tab means, said trigger mechanism dimensioned to fit within said pre-moistened wipe(s) package space, said solvent bag and said trigger mechanism means enclosed in said space between said outer thermal insulated sheet and said inner pouch;
(e) said trigger mechanism means affixed between the seams of said outer flexible, thermal insulated, liquid impermeable sheet with liquid tight seams and a pull-tab means connected to said solvent bag for compromising said solvent bag to release said solvent, with said affixed seams acting as a guide and support member for the pull-tab means, contacting said exothermic pack and thereby initiating an exothermic reaction to heat the enclosed pre-moistened wipe(s).
3. The self heating pre-moistened wipe(s) package according to claim 1, wherein said trigger mechanism means comprising;
(a) a chamber or bladder having significant dimensions to fit within said space, said bladder made from liquid impermeable material,
(b) said solvent bag formed from liquid impermeable sheet material, said solvent bag affixed to said pre-moistened wipe(s) package, whereby said solvent bag ruptures when pressed initiating the exothermic reaction;
4. The self heating pre-moistened wipe(s) package according to claim 1, wherein said trigger mechanism means comprising;
(a) several small chambers or bladders dispersed throughout the trigger means; having significant dimensions to fit within said space; said bladders made from liquid impermeable material; said chambers being in any number or configuration,
(b) said chambers formed from liquid impermeable sheet material, said chambers affixed to said pre-moistened wipe(s) package, whereby said solvent bag ruptures when pressed, the purpose of which is to regulate the temperature of the pre-moistened wipe(s).
5. The self heating pre-moistened wipe(s) package according to claim 2, wherein said trigger mechanism means comprising;
(a) a stiff member having significant dimensions to fit snugly within said space; said stiff member formed from a rigid material;
(b) a pull-tab means consisting of a string having one end anchored to said pre-moistened wipe(s) package, looping the center of and across the length of said solvent bag, exiting out through a hole in said outer pouch, whereby upon pulling said pull string, said solvent bag tears and releases said solvent.
6. The self heating pre-moistened wipe(s) package according to claim 2, wherein said trigger mechanism means comprising;
(a) a stiff member having significant dimensions to fit snugly within said space; said stiff member formed from a rigid material;
(b) a pull-tab means consisting of a string having one end affixed to an adhesive pad, said adhesive pad covers perforation holes on said solvent bag, the other end of said pull string extends out through a hole in said outer pouch, whereby upon pulling said pull string, said adhesives pad peels off releasing said solvent.
7. The self heating pre-moistened wipe(s) package according to claim 2, wherein said trigger mechanism means comprising;
(a) a solvent bag having significant dimensions to fit snugly within said space; the outer and inner package in combination with the exothermic pack giving rigidity to the package; enabling the use of the pull-tab means,
(b) a pull-tab means consisting of a string having one end anchored to the top seam, looping the center of and across the length of said solvent bag, exiting through a hole in said outer pouch, whereby upon pulling said pull string, said solvent bag tears and releases said solvent.
8. The self heating pre-moistened wipe(s) package according to claim 2, wherein said trigger mechanism means comprising;
(a) a solvent bag having significant dimensions to fit snugly within said space; the outer and inner package in combination with the exothermic pack giving rigidity to the package, enabling the use of the pull-tab means,
(b) a pull-tab means consisting of a string having one end affixed to an adhesive pad, said adhesive pad covers perforation holes on said solvent bag, the other end of said pull string extends out through a hole in said outer pouch, whereby upon pulling said pull string, said adhesive pad peels off releasing said solvent.
9. The self heating pre-moistened wipe(s) package according to claims 3, 4, 5, 6, 7, 8, wherein said exothermic pack comprises;
(a) an exothermic pad(s);
(b) said exothermic pad(s) may or may not be affixed in said space.
10. The self heating pre-moistened wipe(s) package according to claims 3, 4, 5, 6, 7, 8, wherein said exothermic pack comprises;
(a) an exothermic powder;
(b) said exothermic powder is not affixed in said space.
11. The self heating pre-moistened wipe(s) package according to claims 3, 4, 5, 6, 7, 8, wherein said exothermic pack comprises;
(a) a reagent in liquid form;
(b) said reagent is encapsulated in said space.
12. The self heating pre-moistened wipe(s) package according to claims 3, 4, 5, 6, 7, 8, wherein said exothermic pack comprises;
(a) an exothermic gel;
(b) said exothermic gel is encapsulated in said space.
13. The self heating pre-moistened wipe(s) package according to claims 3, 4, 5, 6, 7, 8, wherein said exothermic pack comprises;
(a) an exothermic reagent;
(b) said exothermic reagent may or may not be affixed in said space.
14. The self heating pre-moistened wipe(s) package according to claims 3, 4, 5, 6, 7, 8, wherein said exothermic pack comprises;
(a) an exothermic pad(s);
(b) an absorbent envelope(s), said absorbent envelope(s) is a sheet of absorbent material wrapped around said exothermic pad(s).
15. The self heating pre-moistened wipe(s) package according to claims 3, 4, 5, 6, 7, 8, wherein said exothermic pack comprises;
(a) an exothermic powder;
(b) an absorbent envelope(s), said exothermic powder is sealed within said absorbent envelope(s).
16. The self heating pre-moistened wipe(s) package according to claims 3, 4, 5, 6, 7, 8, wherein said exothermic pack comprises;
(a) an exothermic reagent;
(b) an absorbent envelope, said absorbent envelope is a sheet of absorbent material wrapped around said exothermic reagent.
17. The self heating pre-moistened wipe(s) package according to claim 4, wherein said exothermic pack comprises;
(a) several chambers with an exothermic reagent;
(b) an absorbent envelope, said absorbent envelope is a sheet of absorbent material wrapped around said exothermic reagent.
18. The self heating pre-moistened wipe(s) package according to claim 1, 2, 3, 4, 5, 6, 7, 8 wherein said pre-moistened wipe(s) package has a plastic zipper.
19. The self heating pre-moistened wipe(s) package according to claim 1, 2, 3, 4, 5, 6, 7, 8 wherein said pre-moistened wipe(s) package is sealed.
20. The self heating pre-moistened wipe(s) package according to claim 1, 2, 3, 4, 5, 6, 7, 8 wherein said pre-moistened wipe(s) package has a glue sealable flap.
Description

[0001] This invention utilizes a self-heating package for the purpose of containing and heating a pre-moistened wipe(s). It relates to a pre-moistened wipe(s) for the purpose of cleaning parts of the human body or any relevant surface. Said pre-moistened wipe(s) is contained in a flexible insulated package heated by an exothermic reagent.

[0002] 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.

[0003] 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 afore mentioned 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.

[0004] Examples of flexible, chemical thermal bags are also well 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. 5,874,504 and U.S. Pat. No. 4,995,217/U.S. Pat. No. 4,856,651/CA Pat. No. 1,278,478.

[0005] 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. The heated pre-moistened wipe(s) package has several adavantages, as outlined below, when there are multiple chambers or bladders, which allows control of the temperature profile independently of the initial dissolution of a component in solvent.

SUMMARY OF THE INVENTION

[0006] 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, said pre-moistened wipe(s) is ideally suited for cleaning parts of the human body.

[0007] One embodiment of the package consists of a thermally insulated outer pouch contained within said package is an electrolytic-solvent activated exothermic-chemical pad or powder (such as magnesium oxide) enclosed within an absorbent envelope. Also contained is a bag containing electrolytic solvent and a solvent bag or chamber affixed to the inside of the insulating layer of the outer package. When the solvent bag is torn, ruptured, selectively perforating or otherwise compromised, the electrolytic solution within can flow out to trigger an exothermic reaction.

[0008] One objective of the present invention is to provide a heated pre-moistened wipe(s) for the purpose of increased comfort when applied to human skin and cleaning parts of the human body.

[0009] Still another objective of the present invention is to provide a heated pre-moistened wipe(s) to improve the efficacy of said cleaning substance both for the human body or any other relevant surface.

[0010] Yet another objective of the present invention is to provide a heated pre-moistened wipe(s) package which is less bulky, more flexible as well as easily manufactured and therefore more practical.

[0011] Yet another objective of the present invention is to provide a self-heated pre-moistened wipe(s) package with less discarded packaging.

[0012] Other objectives of the present invention may become more apparent as said invention is described in greater detail in the following descriptions and drawings.

DESCRIPTION OF DRAWINGS

[0013]FIG. 1 is a partial, cross-sectional view of a self-heating pre-moistened wipe(s) package showing the preferred embodiment of the invention.

[0014]FIG. 1A is a perspective view of the same embodiment as in FIG. 1 for the present invention.

[0015]FIG. 1B is a perspective view of a self heating pre-moistened wipe(s) package showing a similar embodiment to FIG. 1 only with a slightly different trigger mechanism.

[0016]FIG. 1C is a perspective view of a self heating pre-moistened wipe(s) package showing a similar embodiment to FIG. 1 and FIG. 1B, only with a slightly different trigger mechanism.

[0017]FIG. 1D is a perspective and a cross-sectional view of a self-heating pre-moistened wipe(s) package of a similar embodiment to FIG. 1 and FIG. 1A only with a specific orientation of said exothermic reagents.

[0018]FIG. 2 is a perspective view of a self heating pre-moistened wipe(s) package of a similar embodiment to FIG. 1 only with a variation in the trigger mechanism used to begin the exothermic reaction.

[0019]FIG. 2A is a perspective view of a self heating pre-moistened wipe(s) package showing a similar embodiment to FIG. 2 only with a slightly different trigger mechanism.

DESCRIPTION OF THE INVENTION

[0020] 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.

[0021] 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.

[0022]FIG. 1 and FIG. 1A reveal the basic design of the preferred embodiment of the invention. In FIG. 1 the illustration is shown as a partial cross-section of the components of the basic invention. It is comprised of an elongated outer pouch (10) enclosing an inner pre-moistened wipe(s) package (13) containing the pre-moistened wipe(s). In the envelope space formed between the outer pouch (10) and the inner package (13) is located the solvent chamber (20) and the chemical reagent (22). Together they form the heating elements (25) FIG. 1.

[0023] Ideally, said outer pouch (10) should be flexible, liquid impermeable and somewhat heat resistant. It may be opaque and made of a laminated material such as blax nylon, polyester such as MYLAR.RTM, 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 It should also consist of a thermal insulated layer (12) which may be of a fine cell or cross-linked polyethylene or other suitable material. The composite material sheet is 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).

[0024] Within said outer pouch is enclosed the inner package (13) containing the pre-moistened wipe(s). Said inner package (13) should be formed from a heat resistant, durable, liquid impermeable sheet material folded together. The folded edge becomes the bottom of the inner package/pouch (13). Liquid-tight weld seams (14) are made along the length of the sides to form the pouch. Within this pouch is enclosed the pre-moistened wipe(s). Said pre-moistened wipe(s) may be of any size, shape, construction, and composition depending on the manufacturer's requirements and desires. Said pre-moistened wipe(s) is impregnated with any safe, effective, cleaning solution specifically suited to its application (e.g. cleaning portions of the human body). Furthermore, said pre-moistened wipe(s) is folded over as many times, as few times or not at all, in accordance with the manufacturer's designs in order to maintain rigidity or flatness of the complete package for design requirements.

[0025] With exception to specifics about the pre-moistened wipe(s), FIG. 1 shows all of the above mentioned elements. In addition, it is shown that said inner package (13) has an opening across the top edge (30), located above the upper edge of the outer pouch (10) which can be opened to release said heated pre-moistened wipe(s). In the configuration of FIG. 1, the package is sealed and designed to be torn open by a tear strip (32). However, the actual design could embody any method for sealing, such as a plastic zipper, or an adhesive near the upper edge of the outer pouch (10). In FIG. 1, the inside surface of said outer pouch (10) is sealed against the outside surface of said inner pre-moistened wipe(s) package (13) by weld seams (31). Adhesive strips may also be used in place of weld seams (31). These weld seams prevent cross contamination of said pre-moistened wipe(s) with the enclosed chemicals when said inner pre-moistened wipe(s) package (13) is opened. In addition, weld seams (31) (or adhesive strips) prevent heat loss during the exothermic reaction.

[0026] In FIG. 1 there is an envelope formed between the inside of the thermal insulating layer (12) and the outside of the inner package (13). Within this envelope space is located the exothermic components. These components comprise a solvent chamber (20); the solvent chamber basically comprises a bladder made of some liquid impermeable, rupturable plastic-like material containing the solvent for the exothermic reaction. In FIG. 1, said solvent chamber (20) is large enough to fit snugly in said envelope space and is sealed against the inside of said thermal insulated layer (12) by liquid tight weld seams (23). Said solvent chamber (20) is constructed in such a manner that when specific pressure is applied (in between fingers or against hard surface) the chamber ruptures, releasing said solvent thus triggering the exothermic reaction. Pressure against or along said bladder/chamber selectively ruptures, perforates, or otherwise compromises said bladder/chamber, while leaving the outer surfaces of the package, and the surfaces surrounding the package and said envelope space intact. Said chamber can be comprised of any of a number of functional configurations. In a preferred embodiment, said chamber comprises a rupturable, plastic like material containing the reagent, which is manually ruptured.

[0027] The other component of the trigger mechanism is the exothermic reagent (22). This reagent may be magnesium oxide or some other suitable chemical and may be in the form of a powder, pad, gel or even liquid. In FIG. 1, it is in the form of a powder and enclosed in an absorbent envelope (21). The entire envelope (21) may or may not fit snugly in said envelope space. Said envelope (21) may or may not be attached to the outside of said inner package (13) by weld seams (24). The absorbent envelope (21) facilitates the exothermic reaction by absorbing the liquid solvent and bringing it in contact with the exothermic reagent (22) within. Ideally, the absorbent envelope (21) is made from filter paper or similar material. If the exothermic reagent is in the form of a pad, the absorbent envelope could be a sheet of absorbent material wrapped around the exothermic pad. If the reagent is a powder, the powder is sealed within the absorbent envelope (21). If the reagent is a liquid or gel, an absorbent envelope is not necessary. Instead, the exothermic reagent (22) could permeate throughout said envelope space, between said thermal insulated layer (12) and said inner package (13).

[0028] As previously stated, FIG. 1 and FIG. 1A depict the ideal embodiment of the invention. FIG. 1B and FIG. 1C depict a similar embodiment encompassing all of the elements in FIG. 1 and FIG. 1A with the exception of a slight variation in the triggering mechanism for the exothermic reaction. FIG. 1B is a perspective view of a self-heated, exothermic pre-moistened wipe(s) package encompassing all of the elements in FIG. 1 and FIG. 1A with the exception of multiple bladders/chambers (20A). Said bladders may be connected or independent of each other. For example, each chamber (20A) embodying the same characteristics as in (20) (FIG. 1) may be independent plastic-like bladders each containing said solvent, positioned and attached by weld seams to the inside of said thermal insulated layer (12), or the individual solvent chambers may be connected to one another by a flat, rigid, plastic substance (20B) that sits in said envelope space as in FIG. 1B. This rigid plastic substance (20B) may be held in place by weld seams (24) or simply fit snugly into place. Each chamber is designed to be ruptured independently by the application of specific pressure to each bladder. The advantage of this design is that the intensity and duration of the exothermic reaction may be controlled by the individual depending on when and how many chambers are ruptured. Also, the temperature of the pre-moistened wipe(s) may be controlled.

[0029]FIG. 1C depicts all of the elements described above with only slight variations in the exothermic trigger mechanism. The multiple chamber (20C) is exactly the same as in FIG. 1B only with round chambers instead of square ones. The number and shape of bladders/chambers are variable depending on the manufacturer's needs.

[0030]FIG. 1D depicts an embodiment that resembles the one depicted in FIG. 1A. It comprises all of the elements of FIG. 1A with a slight variation in the design of the trigger mechanism. The solvent bag (20) is attached to the tope of said self-heating pre-moistened wipe(s) package (10) by a weld seam (11) or a separate weld seam and the exothermic reagent (22) resides near the bottom of said envelope space at the opposite end. Said reagent (22) may not be affixed and take the form of a liquid, gel, powder, absorbing envelope or pad. Said absorbent envelope (21) may be affixed by one or more weld seams to the outside of the pre-moistened wipe(s) package (13) or to the inside of the outer package (10). When said solvent bag (20) is pressed or squeezed, thereby ruptured (preferably along bottom weld seam), said package (10) is held upright temporarily to allow the solvent to seep down into the reagent below thereby triggering the exothermic reaction. This specific arrangement of said solvent bag (20) and reagent (22) utilizes gravity to maximize contact between the two chemicals, thereby increasing the efficacy of the exothermic chemical reaction and also reducing manufacturing costs.

[0031]FIG. 2 and FIG. 2A are perspective drawings of a self-heated pre-moistened wipe(s) package embodying all of the elements previously stated for FIG. 1 and FIG. 1A with a slight variation in the heating elements (25). Shown in FIG. 2 is the preferred trigger mechanism utilizing a pulling device. Said solvent bag (20) of FIG. 2 is formed from a liquid impermeable plastic sheet material folded together. The folded edge forms the bottom of the solvent chambers (20). Liquid-tight weld seams (24) are made around the sides and top to form the solvent bag (20). The solvent is contained within the volume enclosed by the weld seams (24). Said solvent bag may or may not fit snugly in the envelope space formed between the inside of the thermal insulated layer (12) and outside of the inner pre-moistened wipe(s) package (13). Said solvent bag is attached to the inside of the thermal insulated layer (12) by weld seams or by some other means. Said solvent chamber (20) contains manufactured holes or pores (27) facing absorbent envelope (21) containing chemical reagent (22). An adhesive flap (26), covers the porous openings (27), in order to contain said solvent within said solvent bag (20). A pull string (41) enters the outer package (10) through a small hole (43). Said pull string hole (43) is sufficiently small as to minimize heat loss during use of the device. Said pull string (41) extends down the length of the bladder/chamber (20) and loops around the loop hole (40) of the adhesive flap (26). The other end of the pull string (41) exits the small hole (43) and is attached to a fastener (44). Upon pulling said pull string (41), the adhesive flap (26) peels off the solvent chamber (20) exposing said porous openings (27) thereby releasing the solvent and triggering the exothermic reaction. In order to increase the mechanical efficiency of the triggering mechanism, an extended lower lip (61) is incorporated into the design of the outer package (10). Said lower lip (61) is formed by extending the lower folded portion of the outer package (10) beyond the weld seams (60). Said lower lip (61) provides a surface that could be held between fingers, to pull against the pulling action of the string (41) when the exothermic reaction is triggered. To improve the mechanical action of said triggering mechanism, increasing the rigidity of the device through packaging or some other means is beneficial. A chemical reagent (22) in the form of a pad is recommended for increased rigidity.

[0032]FIG. 2A depicts all of the embodiments described by FIG. 1 and FIG. 2 with the exception of the trigger mechanism which has a slight variation.

[0033] Shown in FIG. 2A is the solvent bag (20) formed from a liquid impermeable plastic sheet material folded together. The folded edge forms the bottom of the solvent bag (20). Liquid tight weld seams (23) are formed around the sides and top to form the solvent chamber (20). Two liquid tight weld seams (62) are made across the top and bottom of the bag at a distance away from the edges to form an upper and lower lip (63). Said solvent is contained within this space. The two lips (63) that are formed are affixed to the inside of the thermal insulated layer (12) by fasteners (64) such as staples or some other means. A pull string (41) enters through the outer package (10) via a small hole/opening (43), small enough to minimize heat loss when triggered. The string (41) extends down the solvent chamber (20) in the space between the solvent bag (20) and the inner pre-moistened wipe(s) package (13). Said pull string (41) further extends around one end of the solvent bag through a rip hole or loop hole (40) cut into the lower lip (63). Said pull string (41) then traverses back up along the backside of the solvent bag (20) between the solvent bag (20) and the inside of the thermal insulated layer (12). It is then fastened to the combination sheet layer comprising the outer package (10) and the thermal insulated layer (12) by some fastener (42) such as a staple or some other means. The other end of the pull string (41) protruding from the small hole (43) outside the outer package (10), is attached to a pull-tab (44). When the pull string (41) is activated, it facilitates a tear starting at the loophole (40) continuing down the center of the solvent bag (20) releasing said solvent, triggering the exothermic reaction. To maximize the efficacy of said triggering mechanism, rigidity of the device is of utmost importance. Rigidity of packaging should be taken into consideration by the manufacturer. In addition, an exothermic reagent (22) in the form of a pad is preferred to increase rigidity. In addition, when designing the outer package (10), a lower lip (61) extends beyond the weld seams (60) some distance to provide a grip to be held between fingers to counteract the pulling action of the pull string (41) and maximize the tearing action of said trigger mechanism.

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Classifications
U.S. Classification126/263.05, 126/263.08, 126/263.09
International ClassificationF24J1/00, A47K10/32
Cooperative ClassificationA47K2010/3266, F24J1/00, A47K2010/3293
European ClassificationF24J1/00