Heat-preservation bag

Abstract

The invention discloses a heat-preservation bag which comprises a bag body and a bag cover. The bag body and the bag cover each consists of an inner layer, an outer layer and a heat-preservation layer, wherein the inner layer is seamlessly welded with the outer layer, a sealed cavity is formed between the inner side and the outer side, and the heat-preservation layer is arranged in the sealed cavity. The bag body is provided with a heat-preservation chamber defined by the outer layer, the heat-preservation layer and the inner layer sequentially, the upper end of the heat-preservation chamber is open, and the bag cover is movably connected to the open position of the heat-preservation chamber. The heat-preservation layer is wrapped by the completely sealed cavity, air exchange between the heat-preservation chamber and the outside is completely blocked, and heat-preservation effect is improved.

Description

technical field [0001] The invention relates to a thermal insulation bag. Background technique [0002] Insulation bag, a kind of outdoor luggage, is a bag used to hold various foods and keep food temperature and freshness. It can also be used for refrigeration, such as ice cubes, cold drinks and other low-temperature items, so it can be kept Heat preservation and cold preservation are the most basic functions of thermal insulation bags. [0003] In the prior art, the thermal insulation bag generally has a thermal insulation layer, and the thermal insulation layer is wrapped by an inner layer of cloth and an outer layer of cloth, and a half opening for zipper installation is also formed on the outer layer of cloth, an upper cover is formed above the half opening, and a half opening is lowered to form a The insulation room is surrounded by the outside, insulation layer and inside in turn. Pull the zipper to open or close the upper cover. It is very convenient to take things ...

AI Technical Summary

Problems solved by technology

[0005] 1. The sealing effect of the inner fabric and the outer fabric combined by stitching is not good, and pinholes are left at the seams, and the inner fabric and the outer fabric cannot be completely seamlessly combined, which is inevitable The tightness of the insulation bag is greatly reduced, and the external air is easy to form convection with the internal air through the pinhole or the gap between the inner and outer layers, resulting in changes in the internal temperature of the insulation bag, and the insulation effect is not good;

[0006] 2. When storing low-temperature items (such as ice cubes), in the case of air convection, the ice cubes melt or the air condenses, causing the water in the insulation cavity to flow from the outer layer along the gap to the insulation layer. In addition, the in

Images