Pulse sterilization continuous box type modified atmosphere packaging method

Abstract

The invention discloses a pulse sterilization continuous box type modified atmosphere packaging method. The modified atmosphere packaging method includes the steps that firstly, products are placed into a packaging box of a transmission system to enter a closed space of a sterilization cover, and the surface irradiation is performed for a certain period of time through a strong pulse lamp tube in the closed space; secondly, the transmission system conveys the products after the irradiation to a packaging system; thirdly, after films are wound on the packaging box by the packaging system, the processes such as gas changing, gas filling, sealing and cutting are performed on the packaging box; fourthly, the packaging box after being packaged is pushed out by a pushing-out mechanism and conveyed to a finished product area through the transmission system; finally, modified atmosphere packaging is completed. With the method, continuous sterilization and continuous and automatic modified atmosphere packaging can be performed on the products through a small number of work stations, the packaging speed is high, and the high gas replacement rate and the high gas mixing accuracy can be achieved.

Description

technical field [0001] The invention relates to the field of packaging technology, in particular to a pulse sterilization continuous box-type modified atmosphere packaging method. Background technique [0002] Consumers' requirements for food are generally safe to eat, stable in nature, and without additives. In traditional food processing, heat sterilization is mainly used, which leads to the destruction of nutrients, increased discoloration, and loss of volatile components. Cold sterilization (physical sterilization) is a new type of contemporary technology. The physical sterilization conditions are easy to control, and the external environment has little influence. Since the temperature of the food does not rise or rises very low during the sterilization process, it is beneficial to maintain the functional components of the food. It is also beneficial to maintain the color, aroma, taste and nutrients, so it is very necessary to adopt cold sterilization technology in the ...

AI Technical Summary

Problems solved by technology

[0003] However, the fresh-keeping packaging in the existing food and other fields has gradually developed from vacuum packaging to modified atmosphere packaging, that is, other inert gases are used to replace the air in the food packaging box. Modified atmosphere packaging has many advantages that traditional vacuum packaging cannot match. It is faster and has higher productivity, but the current modified atmosphere packaging machine also has some areas that need to be improved. For example, the simple modified atmosphere packaging machine can only work in a single step, and the packaging efficiency is low; the structure of the modified atmosphere packaging machine that can operate continuously and automatically is relatively complicated. Ventilation, box sealing, film cutting and other operations generally require several stations to complete, the equipment work line is long, and the required work space is large