JPS6028438Y2 - cold bag - Google Patents

Description

[Detailed description of the invention] This invention relates to a cold bag whose purpose is to increase heat capacity, improve freezing efficiency, and eliminate directionality between the frozen side and the non-frozen side.

BACKGROUND ART Conventionally, it has been known to put a material with a large heat capacity into a bag, cool it, and use it to cool local parts of the human body.

If a freezing material is used in this case, the heat capacity will be further increased, but when it freezes, it not only hardens and feels bad to the touch.
If you accidentally drop it, there is a risk of it breaking or damaging the bag.

However, in this invention, a package of frozen gel or liquid is placed inside the antifreeze gel or antifreeze liquid, so that the heat capacity is dramatically increased by freezing the package, and moreover, the antifreeze gel or liquid is placed outside of the package. As a result, they were able to improve the tactile sensation when it comes into contact with the human body, and also successfully prevent the cold bag from cracking or the outer bag from being damaged if it is accidentally dropped.

In addition, by making the specific gravity of the package larger than the specific gravity of the antifreeze gel, when this cooling bag is placed in a freezer, the package moves to the bottom as shown by the chain line in Figure 1, and absorbs heat for freezing. In addition, if the cold bag is used as a pillow, the frozen object will automatically move away from the head, giving a good tactile sensation.

That is, to explain this invention with reference to an embodiment, a suitable amount of antifreeze gel 2 made of a mixture of water, polyvinyl alcohol, or a mixture of water, polyvinyl alcohol, and ethylene glycol is placed in a plastic bag 1 that is resistant to low temperatures.

On the other hand, a package 5 is prepared in which a frozen gel 4 made of a mixture of water, polyvinyl alcohol, and a small amount of magnesium chloride is placed in a container 3 made of ethylene saxane vinyl copolymer, and this is placed inside the plastic bag 1. .

The antifreeze gel or antifreeze liquid and the frozen gel or frozen liquid in the above are a mixture of water, polyvinyl alcohol, and ethylene glycol, but are not limited to this, and various conventionally used materials can be used. .

Furthermore, although magnesium chloride is used in the above example as the material for increasing the specific gravity of the package, potassium chloride, sodium chloride, other metal powders, glycerin, or the like may also be used.

It is also possible to attach iron, lead, or other heavy objects to a part of the container.

In short, it is sufficient to make the specific gravity of the package slightly heavier (for example, by 0.1 to 0), so the method is not limited to that.

Next, specific examples of the contents of the package 5 (frozen gel or frozen liquid) and the composition and specific gravity of the antifreeze gel or antifreeze liquid will be shown.

(1) Example with small difference in specific gravity ■ Package size: 10cm x 10cm x 2
cm.

■ The packaging bag is made of vinyl acetate (specific gravity 1.18-1.26.
(calculated as 1.2), and the wall thickness is 0.1 cm.

■ The composition of the contents is 80% water (specific gravity 1.0) and 20% glycerin (specific gravity 1.264).

In this case, (a) The volume of the package is 200 CIl (b) The weight of the package bag is 32.55 g (10 x 1
0x 2-9.8x9.8x 1.8) x 1.2(
C) The weight of the contents is 182.00g9.8x9.
8x 1.8x (1x 0.8+ 1.264x O
,2)(d) The weight of the package is 214.55g32.
55+ 182.00 (e) The specific gravity of the package is 1.073. On the other hand, the antifreeze liquid is 67% water and ethylene glycol (specific gravity 0
．． 931) If it is 33%, its specific gravity is 0.9'17
It is.

In this case, the difference in specific gravity between the two is 0.096.

(2) When the difference in specific gravity is large ■ The size of the package is 10cm x 10an x 2
cm.

■ The packaging bag is made of vinyl acetate and has a wall thickness of 0.15 cm ■ The composition of the contents is 80% water, 20% glycerin, and 5 mL (56.7 g) of lead (specific gravity 11.34). .

In this case, (a) The volume of the package is 200 cr! (b) The weight of the package bag is 48.06P (C) The weight of the contents is 163.13g (d) The weight of the package is 267.89948.06+ 56.70+ 163.
13(e) The specific gravity of the package is 1.339. On the other hand, if the antifreeze liquid is 67% water and 33% ethylene glycol, its specific gravity is 0.977.

In this case, the difference in specific gravity between the two is 0.367.

In addition, there are no limitations on the use of bags made of other materials instead of plastic bags, and the use of other materials for the exterior of the package, and any suitable material may be used.

When the cold bag having the above structure is placed in a freezer, the package descends as shown by the chain line 5a in FIG. 1, and its lower surface abuts against the inner surface of the plastic bag, so that it is efficiently cooled from the freezer wall. effective.

However, since the package is housed inside the antifreeze gel, the package will descend due to its own weight no matter which side of the plastic bag is turned down, making it convenient to handle the cold bag without any directionality.

Also, even if the package falls through the cold bag, there is antifreeze around the package, so the package will not break or break.
There is no risk of damage to the plastic bag.

Furthermore, when the cold bag is used as a pillow, the package descends due to its own weight, so there is no risk of deteriorating the tactile sensation even if the bag is used without considering directionality.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view of an embodiment of this invention, and FIG. 2 is a plan view of the same. 1...Plastic bag, 2...Antifreeze gel,
3...container, 4...frozen gel, 5...
...Packaging body.

Claims (1)

[Claims for Utility Model Registration] 1. A package of frozen gel or liquid is placed inside an antifreeze gel or liquid contained in a bag, and the specific gravity of the antifreeze gel or liquid is determined by the specific gravity of the package. A cold bag that is lighter than its specific gravity. 2. The cold bag according to claim 1, wherein the antifreeze gel is a mixture of water, polyvinyl alcohol, and ethylene glycol. 3 A cold bag as described in Paragraph 1 of the claim for utility model registration in which freezing 'y'le is a mixture of water and polyvinyl alcohol. 4 A claim for utility model registration in which freezing gel or freezing liquid is mixed with a substance that increases specific gravity. 5. The specific gravity increasing material is magnesium chloride, potassium chloride,
The cold bag according to claim 1, which is made of sodium chloride, glycerin, or other metal powder.