Multifunctional integrated freshness protection package and preparation method thereof

Abstract

The invention discloses a multifunctional integrated freshness protection package and a preparation method thereof and belongs to the field of packaging materials. Ethylene absorption, ethylene suppression, antibacterial, high carbon dioxide selective permeation and high steam permeation function film is used as raw material film, and two to five kinds of the function film are selected to be prepared into the multifunctional integrated freshness protection package. The multifunctional integrated freshness protection package is suitable for fresh keeping of fruits and vegetables which are high in breathing intensity and particularly suitable for fresh keeping of breathing jumping fruits in the normal temperature.

Description

technical field [0001] The invention relates to a fruit fresh-keeping packaging material, in particular to a design and preparation method of a multifunctional integrated fresh-keeping bag with high oxygen permeability, water permeability, carbon dioxide permeability, ethylene adsorption, and ethylene suppression, and belongs to the field of packaging materials. Background technique [0002] Fresh fruits and vegetables continue to respire after being picked, oxidize nutrients, release heat, and produce metabolites such as water, carbon dioxide, and ethylene; at room temperature and in a naked environment, the respiration rate of fruits and vegetables is strong, and fruits and vegetables are prone to aging and loss. In the airtight environment formed by ordinary fresh-keeping bags, ethylene, carbon dioxide and water cannot be fully and timely removed, and ethylene will accelerate the respiration intensity of fruits and vegetables, and promote the further ripening and aging of ...

AI Technical Summary

Problems solved by technology

[0007] The bag body made of non-woven fabric or the design of punching micro holes on the bag body cannot accurately control the permeability of oxygen and water vapor, and has no selectivity for the permeability of carbon dioxide gas; adding inorganic particles or rubber components to polyethylene or polypropylene resin, It can increase the oxygen transmission rate, but the increase in the permeability of water vapor is not significant; due to the small area of ​​the silicon window, it is difficult to fully penetrate water vapor and carbon dioxide through it, and the design of the silicon window increases the processing cost of the fresh-keeping bag; for Those bags with complex designs increase production costs and are difficult to form large-scale mechanized production; fresh-keeping bags designed with double-layer structure and three-layer structure will reduce their air permeability, often resulting in insufficient oxygen supply in the fresh-keeping bag, and water vapor cannot be released in time. Exclusion: In order to increase the antibacterial function and ethylene adsorption function, it is also a common packaging form to add medicine packs in fresh-keeping bags, but if the medicine packs are damaged, the fruits and vegetables will be polluted, or the concentration of the fungicide released by the medicine packs is too high, causing the fruits and vegetables to be polluted and lose their flavor.

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