Freshness-keeping food packaging bag

Abstract

The invention discloses a freshness-keeping food packaging bag which comprises at least two packaging bag bodies and a middle interlayer bag connected between the packaging bag bodies. Concave-convex inner sealing strips are arranged on the packaging bag bodies, a cutting-resistant layer is arranged outside each packaging bag body, a heat insulation layer is arranged inside each packaging bag body, and a freshness keeping layer is arranged inside each heat insulation layer. By the above mode, the freshness-keeping food packaging bag is capable of realizing secondary protection of food to prevent the food from going bag, safe to use and simple in structure.

Description

technical field [0001] The invention relates to the field of food packaging, in particular to a fresh-keeping food packaging bag. Background technique [0002] With the continuous improvement of people's living standards, all kinds of food have appeared in the market, and various food packaging bags have appeared thereupon. For some foods, especially ready-to-eat foods, if consumers cannot use them all at once after opening the sealed packaging bag, it will be difficult to keep the food inside in a closed state, especially for foods that are easy to absorb or lose moisture and deteriorate , if it is not kept sealed before the next use, the modified food will lose its original properties, such as biscuits absorb moisture and become soft, bread loses water and becomes dry, milk powder absorbs moisture and agglomerates, etc. If we can design a packaging bag that can be opened Food bags that can still play a better sealing role in the end will be able to improve problems such a...

AI Technical Summary

Problems solved by technology

For some foods, especially ready-to-eat foods, if consumers cannot use them all at once after opening the sealed packaging bag, it will be difficult to keep the food inside in a closed state, especially for foods that are easy to absorb or lose moisture and deteriorate , if it is not kept sealed before the next use, the modified food will lose its original properties, such as biscuits absorb moisture and become soft, bread loses water and becomes dry, milk powder absorbs moisture and agglomerates, etc. If we can design a packaging bag that can be opened Food bags that can still play a better sealing role after the end, will be able to improve food deterioration and other problems

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