A thermal insulation packaging bag

Abstract

The invention belongs to the technical field of packaging bags, and particularly discloses a heat insulating packaging bag. The heat insulating packaging bag comprises a heat insulating bag and handles; one-way air inlet pipes which are positioned at the top end of the heat insulating bag are arranged on the side surface of each handles; a heavy block is arranged at the bottom of the heat insulating bag; the top of the heavy block is connected with the bottom of the heat insulating bag through sealing elastic cloth; and elastic ropes are arranged in the heat insulating bag. When the heat insulating packaging bag is required to be used, the heat insulating packaging bag can be cooled or heated first according to a using requirement, so that the heat insulating packaging bag can perform heatinsulating or cold insulating work on an object; then, a supersaturated solution is solidified and generates heat or absorbs the heat in a process of stirring the supersaturated solution in a supersaturated solution layer; and the heat insulating packaging bag can insulate the heat of the object in the heat insulating bag, and meanwhile, the effect of performing the heat insulating or cold insulating work on the object is further improved by isolating the interior from the exterior of the heat insulating bag through an inflating layer.

Description

technical field [0001] The invention belongs to the technical field of packaging bags, in particular to a thermal insulation packaging bag. Background technique [0002] Thermal insulation bags are also called thermal insulation bags. Because of their high heat insulation and constant temperature effects, they are widely used in the heat preservation and cold preservation needs of daily items during short-distance carrying. [0003] In the prior art, there are also some technical solutions for heat preservation bags and heat preservation packaging bags. For example, a Chinese patent with application number 201710537133.6 discloses a heat preservation and freshness preservation packaging bag, which includes an upper bag body and a lower bag body. A seal is provided, and an inner seal is provided at the junction of the upper bag body and the lower bag body; a fresh-keeping bag is arranged in the lower bag body, and the top opening of the fresh-keeping bag is connected to the j...

AI Technical Summary

Problems solved by technology

[0004] The heat preservation and fresh-keeping packaging bag is provided with a fresh-keeping bag in the lower bag body, so that the fresh-keeping bag is protected by the lower bag body, and an insulating layer, an air-filled layer and a connecting piece are set between the fresh-keeping bag and the lower bag body. Shake freely in the lower bag body, the inflatable layer can be filled with gas of appropriate temperature according to needs, and is kept insulated by the insulation layer. The fresh-keeping bag itself plays a role in keeping the items in it fresh, and has good practicability; Set the seal to make it in the form of a courier bag, which can be used as a courier bag with a packaging effect to save resources, but it is necessary to fill the gas layer with a certain temperature of gas during use, so that the heat preservation and freshness packaging bag can protect the items Insulation, but the heat preservation of the gas filled into the inflatable layer often has great limitations, so the heat preservation and fresh-keeping packaging bag needs to continuously ventilate the gas in the inflatable layer when it is used, which increases the complexity of the heat preservation work of the items. At the same time, the practicability of the heat preservation and fresh-keeping packaging bag in the heat preservation work is reduced. Therefore, the present invention proposes a heat preservation packaging bag

Images