Cooling and anti-condensation heat preservation packaging bag for quick-frozen food

Abstract

The invention relates to a cooling and anti-condensation heat preservation packaging bag for a quick-frozen food. The packaging bag comprises a developing cooling layer, a water and air absorbing layer, a bacteriostatic bionic layer and an efficient heat preservation layer, the developing cooling layer, the water and air absorbing layer and the bacteriostatic bionic layer are tightly attached together from outside to inside, after the three layers are co-extruded, and the bacteriostatic bionic layer is extruded on the efficient heat preservation layer at intervals from inside to outside to form a heat preservation bag; the color developing and cooling layer comprises a one-way water-permeable and air-permeable fiber film and a cooling and color developing coating coated on the film, and the cooling and color developing coating is arranged on the inner side; and the water and air absorbing layer is formed by loading three-dimensional multi-metal ion framework adsorption crystals on a semi-dehydrated-activated-bacterial cellulose membrane. The inner layer of the packaging heat preservation bag is made of the one-way water-permeable and air-permeable fiber membrane and has the water-encountering color-developing and cooling functions, the bottom layer of the color-developing membrane is coated with the cooling particles, when dissolved water encounters the cooling particles, the environment temperature is lowered, the dissolving speed is delayed, and meanwhile bacterial colony growth is inhibited at low temperature.

Description

technical field [0001] The invention relates to the technical field of fresh-keeping packaging, in particular to a thermal insulation packaging bag for quick-frozen food cooling and anti-condensation. Background technique [0002] The existing quick-frozen packaging has the following problems: (1) It is easily affected by environmental changes, and its thermal insulation performance is poor; Thawing forms droplets or frost in the bag. [0003] According to the survey, it is found that the main reasons for the above problems are: (1) The whole process of frozen food needs to be stored at low temperature, if encountering temperature fluctuations, it will have a great impact on the overall temperature of the food; (2) The existing packaging bags are mainly PE, PP material, poor heat preservation effect; (3) The frozen food is not completely separated from the surrounding environment, and there is no relative vacuum environment with a very small heat transfer coefficient. [0...

AI Technical Summary

Problems solved by technology

[0002] The existing quick-frozen packaging has the following problems: (1) It is easily affected by environmental changes, and its thermal insulation performance is poor; Thawing forms droplets or frost in the bag

[0006] (2) During t...

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