The packaging machine provides complete packaging support for the food and pharmaceutical industries. In the hot packaging industry, the demand for packaging materials is also increasing. Under the challenge of the market environment, which packaging material is the most demanded by the market What about?
1.Microwave heating food packaging
Mainly used for packaging three types of food: (1) microwave-heated soup for high-temperature cooking food; (2) frozen food packaged in heat-resistant containers; (3) food raw materials with water added in a microwave oven.The soup that is sterilized by high-temperature steaming and sterilization needs to be warmed and eaten in many occasions. Most of the metal cans used cannot be directly used in the microwave oven, but only plastic containers with excellent heat resistance..PP/adhesive resin PVDC/adhesive resin/PP co-extruded sheet molding container, can be used to package soup, beef stew and other foods, when eating, use a microwave oven to heat up and open the lid for consumption.The Dow Chemical Company of the United States uses PVDC and EVAL barrier materials, and adopts a sheet-free press molding method to make a container, which is filled and sterilized at a high temperature..The high-temperature retort bags (cans) made of PP (190μm)/adhesive resin 32μm/E-VAL46μm/adhesive resin 32μm/PP160μm are sold in the US market, which can be heated in a microwave oven..The container used for frozen food in the United States is the so-called Dualovenable Tray, which is a plastic container that can withstand both low temperatures and high temperatures of 320°C..It must be pointed out that what we are talking about now is that the high-temperature cooking bag has gone beyond the form of a bag, and is more of a co-extrusion composite multi-layer sheet thermoformed container.If you add a variety of cooking seasonings to the container, you can take it out of the freezer and place it directly in the microwave oven to cook into dishes, and take it to the tabletop and open the lid to eat.The packaging container is not only a cooking utensil, but also a serving of dishes..
2.Containers for frozen food
For general frozen food containers, inexpensive PET/paper composite materials can be used; crystalline PET and resin-coated aluminum foil can be used for intermediate heat-resistant; high-grade unsaturated polyester (30%) + CaCO3 (50%) + glass Thermosetting tray made of fiber (20%), and polyetherimide/PC/polyetherimide compound; super high-grade use of xydar liquid crystal polymer, melting point 421℃, decomposition temperature 560℃.Good barrier properties and the use of N2 gas filling packaging for frozen food packaging can prevent the formation of fatty acids from the fat in the food due to oxidation.
3.Aseptic packaging of vegetables
The aseptic packaging of various vegetables is currently another hot spot adopted by countries all over the world. This must ensure that the food should be carefully cleaned and the bacterial content should be minimized. All processing machinery should be thoroughly disinfected to prevent secondary contamination of the food..Generally, all kinds of vegetables should be stored in shallow cold at 5°C, fish, shrimp, and meat should be frozen and stored at -25°C. After washing, vegetables should be packaged below 18°C and circulated at -2°C to 0°C..Both the aseptic packaging of solid foods and the aseptic packaging of high-viscosity liquid foods are the subject of current research..
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