Packaging and fresh-keeping method for foodstuff

Abstract

the invention disclose a food preserve and pack method including the following steps: 1) deliver the conjoined package box with the food inside to the packing, sealing and cutting area; 2) the sealing and cutting device (2) presses on the film coating so that the film and the support device will surround the foods and forms a seal cavity; (3) the air pumper evacuates; then pumper aerates into the cavity with protective gases. 4) the sealing and cutting device (2) pressure heat seals the cavity after the aerating; 5)the fluctuating pressure device(1) cuts the package box from the film coating; 6) the deliver mechanism delivers out the sealed package box. Above process including deliver in, locate, film coating press, evacuate, aerate, heat seal, cutand deliver out all finish continuously on a single machine. Each process is controlled by control logic made up of relays or PLC. The invention not only saves the package material, lowers the cost, enhance the efficiency but greatly varies the package patterns, and the preservation is effective and environmental,

Description

1. Technical field: [0001] The invention relates to a food packaging and fresh-keeping method, in particular to a method for packaging and modified-atmosphere fresh-keeping of baked food, which belongs to the innovative technology of food packaging and fresh-keeping methods. 2. Background technology: [0002] Pastry food (including Chinese style and Western style) has a long history and culture, and it is a traditional food loved by people because of its changeable shape, variety, and different tastes. However, due to the relatively high moisture and oil content, it is very easy to grow mold and deteriorate, and the shelf life is relatively short. [0003] The comparatively general pastry food (such as Mid-Autumn Festival moon cake) fresh-keeping packaging method of domestic application at present is bag type (adding oxygen absorbing agent) packing method, promptly " film bag ten plastics bottom support ten oxygen absorbing agents ". Its fresh-keeping principle is as follow...

AI Technical Summary

Problems solved by technology

Therefore, the use of bag type (adding oxygen absorber) packaging method can be considered as a packaging method that wastes packaging materials and manpower and increases costs.

[0006] 2) The product packaged by this method has a single shape, which is not conducive to sales

[0007] Limited by the function of the existing packaging machine, the shape of the bag packaging is limited to a rectangle, and any shape of pastry is finally packaged either as a rectangle or a square, and the range of style changes is small, which inhibits the characteristics of various shapes of pastry food

Since most pastry and bakery manufacturers use bag packaging, the appearance of the products is very similar, and the color and pattern of the packaging bag alone are not conducive to product innovation and sales.

[0008] 3) The products packaged by this method have a high risk of mildew

The sealing side of the pillow packaging adopts the back seal form, which has an obvious disadvantage, that is, when sealing, the heat-sealing film at the middle interface of the two sides of the packaging bag is two more layers than the two sides, so when it is heat-sealed, Affected by factors such as voltage instability and equipment quality, it is usually prone to poor sealing at the intermediate interface

Once this happens, the oxygen absorber in the packaging bag (box) will lose its effect in a short time, which will cause the packaged food to go moldy in a short time

Therefore, the use of bag type (with oxygen absorber) packaging, the risk of food mildew is higher

[0010] 4) The scope of application is narrow and the cost of preservation is high

[0011] Oxygen absorbers can only inhibit the growth of aerobic bacteria in packaged foods, but cannot inhibit molds that can grow without oxygen (such as anaerobic bacteria, etc.). Once food is contaminated by such molds during the packaging process, oxygen absorbers Effective and moldy

Therefore, the scope of application of oxygen absorbing agent for fresh-keeping is relatively narrow, and the price of oxygen absorbing agent accounts for nearly a quarter of the packaging cost at present, and the cost is relatively high.

[0012] 5) Lack of environmental protection

Therefore, the lack of environmental protection

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