JP3073599U - Dry heat retention bag - Google Patents

Abstract

(57) [Summary] [Problem] To provide a dry-type thermal insulation bag which can be used for both thermal insulation and thermal insulation, has a small volume before water absorption and is advantageous for transportation and carrying. SOLUTION: The non-water-containing heat retaining bag is placed in water at the time of use, absorbs moisture, is used for keeping the temperature of frozen or heated articles as required, and completely covers an absorbent base material including a polymer absorbent with a packaging material. It is characterized in that the moisture permeates the absorbing substrate from the packaging material, and the absorbing substrate absorbs the moisture and links the moisture to confine the moisture, and maintains a constant temperature environment after freezing or heating. .

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a kind of dry thermal insulation bag, and more particularly to a thermal insulation bag containing a polymer absorber, which locks moisture in an absorbent base material to prevent external leakage of moisture. .

[0002]

[Prior art]

 Fresh foods such as seafood, meat, cakes, frozen foods, etc., or foods that only need to be stored for a short period of time, must be kept in a refrigerated state during transportation or in situations where freshness must be maintained for a while, for example, during sales or exhibitions. Temperature must be maintained to maintain the freshness of the food and prevent spoilage and deterioration of the food.

[0003] In order to maintain a fixed refrigeration temperature, the freshness of the food is usually maintained by freezing bags. Known refrigeration bags enclose a gel-like fluid in a package bag, which is placed in a freezer, frozen, and placed under food that needs to be kept cool, so that the food is stored. It can be kept at a low temperature. However, such frozen bags occupy a considerable amount of volume before freezing, and as a result, they are large and heavy during the transportation process at the time of completion of production, so that many freight charges are in spite of the small transport volume. This situation resulted in considerable labor required during transportation, which was very inconvenient. In addition, the frozen bags purchased by consumers had already been fixed in size, and their contents could not be controlled, making them inconvenient to carry.

[0004] In addition to the above-described effects, well-known refrigerated bags have been used only as cooling pads, and cannot be used as heat insulating pads. In addition, the above-mentioned frozen bag could only be maintained at a low temperature but could not be maintained at a high temperature, which was very inconvenient.

[0005]

[Problem to be Solved by the Invention] An object of the present invention is to provide a dry-type thermal insulation bag having two kinds of functions of cold insulation and thermal insulation. The dry insulation bag of the present invention shows a dry state before water absorption, and is very light and thin like paper.

[0006] Therefore, another object of the present invention is to provide a dry heat-insulating bag which has super-absorbency and high water-retention, can be applied to two kinds of environments of cold and heat, and can maintain constant temperature for a long time. .

[0007] In order to achieve the above object, the present invention completely covers an absorbent base material including a polymer absorbent body with a packaging material, and expands immediately after the polymer absorbent body of the absorbent base material absorbs moisture. In addition, water is retained in the absorbent base material, and the above-mentioned packaging material is used as a water-impermeable packaging material having holes or as a water-permeable packaging material, and is used for entering the moisture into the absorption base material. It is characterized by

[0008]

[Means for Solving the Problems]

 The invention according to claim 1 is provided with an absorbent base material that absorbs water and expands and retains moisture inside, an impermeable packaging material that completely covers the absorbent base material, and the impermeable packaging material. A dry-type thermal insulation bag comprising a number of holes and a waterproof layer provided between the absorbing base material and the holes. According to a second aspect of the present invention, there is provided the dry thermal insulation bag according to the first aspect, wherein the absorbent base is provided with a nonwoven fabric of a polymer absorbent. According to a third aspect of the present invention, there is provided the dry thermal insulation bag according to the first aspect, wherein the absorbent base material comprises a paper material of a polymer absorber. According to a fourth aspect of the present invention, there is provided a dry thermal insulation bag according to the first aspect, wherein the impermeable packaging material is joined by heat sealing or adhesive spray. The invention according to claim 5 is characterized by comprising an absorbent base material that absorbs water and expands and retains the water inside, and a water-permeable packing material that completely covers the absorbent base material. It is a warm bag. According to a sixth aspect of the present invention, there is provided a dry thermal insulation bag according to the fifth aspect, characterized in that the absorbent substrate comprises a nonwoven fabric of a polymer absorbent. According to a seventh aspect of the present invention, there is provided the dry thermal insulation bag according to the fifth aspect, wherein the absorbent base is provided with a paper material of a polymer absorber. An eighth aspect of the present invention is a dry thermal insulation bag according to the fifth aspect, wherein the impermeable packaging material is joined by heat sealing or adhesive spray. According to a ninth aspect of the present invention, there is provided the dry thermal insulation bag according to the fifth aspect, wherein the permeable packaging material is a permeable nonwoven fabric. A tenth aspect of the present invention is a dry thermal insulation bag according to the fifth aspect, wherein the water-permeable packaging material is a packaging material composed of a water-permeable material and a water-impermeable material.

[0009]

[Embodiment of the invention]

 The present invention is a kind of dry-type thermal insulation bag, which exhibits a light state when not in use, and has a heat retaining effect by controlling the amount of water absorption or the state of cold heat as required by the user. It has an absorbent substrate with a polymeric absorber.

1 and 2 are a plan view and a sectional view of the present invention. The heat retaining bag 10 is provided with an absorbent base material 12, which is a non-woven fabric containing a polymer absorbent 14, which is uniformly fixed in the non-woven fabric and integrally formed. Are high-purity acrylic acid-based polymerized particles. The water-impermeable packaging material 16 completely covers the above-mentioned absorbent base material 12, and a number of holes 20 for allowing moisture to enter the surface of the water-impermeable packaging material 16 are provided. One waterproof film 22 is provided between the two, and the two ends of the water-impermeable packaging material 16 and the intermediate waterproof film 22 are joined by a heat sealing method or an adhesive spray method to form a joint portion 18. Thus, the water-impermeable packaging material 16 becomes one hermetically sealed covering material, completely covers the polymer absorber 14, and prevents leakage of the polymer absorber 14. A paper material containing a polymer absorber can be used instead of the nonwoven fabric of the polymer absorber described above.

After water is absorbed from the holes 20 of the water-impermeable packaging material 16 into the absorbent base 12 containing the polymer absorber 14, the water is quickly adsorbed by the polymer absorber 14 therein, When expanded, the polymer absorber 14 containing water becomes a high-viscosity gel, and the water-impermeable packaging material 16 also expands outward, as shown in FIG. As a result, an expansion pressure is generated inside, and the waterproof film 22 provided inside is pressed against the hole 20 to form an effect of automatically sealing to leak the gel-like material of the absorbent base material. Don't let it.

The impermeable packaging material 16 is made of a water-impermeable PE film, a multi-layer packaging film, or another impermeable material. The waterproof film 22 is a waterproof PE film or other waterproof material.

According to the present invention, a waterproof membrane strip 24 is joined to the absorbent base 12 including the polymer absorber 14 at a position corresponding to the hole 24, and a configuration in which the waterproof membrane described above is replaced is also possible. As shown in FIG. 4, the waterproof membrane strip 24 is bonded to the absorbent base 12, and when it is placed in water, water enters the heat retaining bag 10 through the holes 24, inflating the absorbent base 12, The waterproof membrane strip 24 closes the hole and forms an automatic sealing effect to prevent the gel-like substance of the absorbent base from leaking out.

As shown in FIGS. 5 and 6, the above-described water-impermeable packaging material having holes can be replaced with a water-permeable packaging material 26 having no holes, and the water-permeable packaging material 26 can be a nonwoven fabric or any other arbitrary material. It is made of a water-permeable material, and allows water to permeate through the water-permeable packaging material 26 and penetrate into the absorbent base material 12 therein, thereby expanding the polymer absorber 14 and holding the water inside. Among them, the water-permeable packaging material 26 can be any of a packaging material made of a water-permeable material and an impermeable material.

[0015]

[Effect of the invention]

 The above-mentioned thermal insulation bag is dry, light and paper-like, requires only a small amount of transportation space, is convenient for transportation and saves on freight, convenient for consumers, and convenient for form. The amount of water absorbed by the thermal insulation bag can be controlled.

[0016] The dry thermal insulation bag of the present invention has no fluidity of water after water absorption and expansion, retains a flake shape, has a uniform and flat surface, and is not applicable because it has an arbitrary shape when not fixed. It can prevent poor quality and appearance. After containing the water, the thermal insulation bag is frozen or heated according to demand and must be kept at a low temperature, or when used as a cold bed, the thermal insulation bag is frozen in a freezer to maintain the high temperature. Alternatively, when used as a hotbed, heating in a microwave oven is very convenient.

According to the present invention, a polymer absorber of high-purity acrylic acid-based polymer particles is fixed in an absorbent substrate, has stretchability, does not leak outside, has superabsorbency, and has high water retention. It is a dry insulation bag equipped with a coating, which is convenient for coating and prevents environmental pollution during processing.

The embodiments described above are merely examples for explaining the technical concept and features of the present invention, and any modification or alteration of details that can be made based on the present invention shall fall within the scope of the present invention. .

[Brief description of the drawings]

FIG. 1 is a plan view of the present invention.

FIG. 2 is a sectional view of the present invention.

FIG. 3 is a display diagram after expansion of FIG. 2;

FIG. 4 is another embodiment of the waterproof layer of the present invention.

FIG. 5 is another embodiment of the present invention.

FIG. 6 is a display diagram after the expansion of FIG. 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Insulation bag 12 Absorbent base material 14 Polymer absorber 16 Water-impermeable packaging material 18 Joining part 20 Hole 22 Waterproof membrane 24 Waterproof membrane strip 26 Water-permeable packaging material

Claims (10)

[Utility model registration claims] 1. An absorbent base material that absorbs moisture and expands and retains moisture inside, an impermeable packaging material that completely covers the absorbent base material, and a plurality of impermeable packaging materials provided on the impermeable packaging material. A dry heat-insulating bag, comprising: a hole; and a waterproof layer provided between the absorbing base material and the hole. 2. The dry thermal insulation bag according to claim 1, wherein the absorbent base material comprises a nonwoven fabric of a polymer absorbent. 3. The dry thermal insulation bag according to claim 1, wherein the absorbent base material comprises a paper material of a polymer absorber. 4. The dry thermal insulation bag according to claim 1, wherein the impermeable packaging material is joined by heat sealing or adhesive spray. 5. A dry heat-insulating bag, comprising: an absorbent base material that absorbs water and expands and retains moisture inside; and a water-permeable packaging material that completely covers the absorbent base material. 6. The dry thermal insulation bag according to claim 5, wherein the absorbent base comprises a nonwoven fabric of a polymer absorbent. 7. The dry thermal insulation bag according to claim 5, wherein the absorbent base comprises a paper material of a polymer absorbent. 8. The dry thermal insulation bag according to claim 5, wherein the impermeable packaging material is joined by heat sealing or adhesive spray. 9. The dry heat-insulating bag according to claim 5, wherein the water-permeable packaging material is a water-permeable nonwoven fabric. 10. The dry thermal insulation bag according to claim 5, wherein the water-permeable packaging material is a packaging material composed of a water-permeable material and a water-impermeable material.