Water-injection self-cooling colloid ice bag

Abstract

The invention relates to a water-injection self-cooling colloid ice bag. A sealing bag provided with a one-way valve water inlet is internally provided with a solid refrigerant, and the solid refrigerant comprises the following components by weight percent: 80-90 percent of urea, 4-10 percent of water absorbent resin, 5-10 percent of guar gum and 1-5 percent of sodium bicarbonate. The one-way valve water inlet is externally provided with a widened and lengthened opening to form a water injection bag. The other end of the sealing bag which is symmetrical with the water injection bag is provided with a bundling band with gum cards. The solid refrigerant becomes gelatinous after being injected with water, can maintain icy state for longer time, is placed into a refrigerator for refrigeration after being used and can be used repeatedly; the colloid ice bag generates phase change to form solid ice when the temperature is lower than minus 20 DEG C, thus playing a role in low-temperature freezing resistance; the one-way valve water inlet is externally provided with the widened and lengthened opening to form the water injection bag, thus being convenient to add water; and the other side of the sealing bag is connected with the bundling band with the gum cards, thus being convenient to tie the ice bag to the infected part.

Description

technical field [0001] The invention relates to an ice pack, in particular to a water-filled self-cooling colloidal ice pack. Background technique [0002] Existing ice packs have ice cube ice packs, colloid ice packs and liquid-packed refrigerated ice packs. The use of ice cube ice packs and colloidal ice packs needs to be put into the refrigerator first, frozen and stored for a period of time, and then taken out for use when needed, so an external ice source is required to freeze and store them. The liquid-packed refrigerated ice pack adopts the method of placing a liquid pack in a bag containing solid raw materials. When using it, the liquid pack should be broken to make it mix with the solid to produce a chemical reaction, absorb heat and cool down to start refrigeration; the liquid-packed refrigerated ice pack The disadvantage is that the liquid bag in the ice pack is easily crushed, causing the liquid to flow out, and it is half or completely invalid before it is used...

AI Technical Summary

Problems solved by technology

The liquid-packed refrigerated ice pack adopts the method of placing a liquid pack in a bag containing solid raw materials. When using it, the liquid pack should be broken to make it mix with the solid to produce a chemical reaction, absorb heat and cool down to start refrigeration; the liquid-packed refrigerated ice pack The disadvantage is that the liquid bag in the ice pack is easily crushed, causing the liquid to flow out, and it is half or completely invalid before it is used; the cooling time is short when ice is applied; and the shelf life is short

I proposed "a refrigeration ice bag" in Patent No. 200920017957.1, which puts solid chemical raw materials in the ice bag. When using it, you only need to add water to the ice bag, and it can be refrigerated immediately. The water inlet of the valve is too small, (if the water inlet of the one-way valve is too large, the water in the bag will flow backwards), it is difficult to operate, and it needs to be equipped with a water inlet funnel, which is troublesome

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