Development trend IV of the hottest military food

Development trend of military food packaging (IV)

at present, relevant experts are discussing the use of new heat sealing layers, which still have good sealing strength in the case of oil pollution. The breakthrough of this technology will have a significant impact on the flexible packaging technology

d. rat prevention: Rats often bite soft packaged cans. Especially in combat conditions, the field food stored in simple field warehouses is even more so. This situation seriously limits the use of soft cans. In the future, this problem can be solved by the strength of the packaging materials or the use of unwanted odors in the packaging materials

e. natural degradation: in view of the requirements of environmental protection, develop flexible packaging materials that can naturally degrade

③ semi hard packaging

semi hard packaging is a new type of can packaging material. Because it is between hard can and soft can, it takes into account some advantages of both. Especially in opening, it is better than hard and soft cans. The development of new semi-rigid canning materials will be one of the development directions of military canning in the future

a when installing fixtures. Aluminum plastic packaging: used in some field food of foreign troops. If sauce, cream and some condiments. Aluminum plastic cans are a kind of gas cans. Due to China's vast territory and a considerable plateau, gas cans will produce physical obesity in high altitude areas. To make aluminum plastic cans used in our army, we must solve this problem before it has a bright future

b. multi layer material coextrusion packaging: this material takes EVOH as the barrier material and can withstand the high temperature of 121 ℃. Because the plastic has good molding performance, it is easy to be made into a grid shape, and the top is made of plastic composite materials by heat sealing. In this way, there can be several kinds of meals in a box. This is difficult for metal cans to do. Domestic enterprises have trial produced this kind of packaging material, and we are ready to carry out experimental research in this field in the future. This kind of packaging should have the most development prospects. Moreover, it will have good development value in the civil market

2. Dry product packaging

dry products are storable at room temperature, so many military foods use this form. Our army uses a wide range of materials for packaging dry products, such as tinplate, aluminum foil and composite packaging materials

① oxygen barrier packaging

most military dried foods contain grease, and some contain relatively high content, such as compressed dry food. The most critical factor affecting the storage period of this kind of food is fat oxidation. Therefore, such products must be packaged with good oxygen barrier performance. According to the current development of packaging, tinplate cans, aluminum foil packaging bags and multi-layer composite bags will be widely used in military food. In particular, it is pointed out that some dried products, such as dehydrated rice, have low oil content, but are also very easy to produce Khara flavor. The packaging requirements for this product are the same as those for high-fat products

② waterproof and steam packaging

some dried products have good storage performance, such as dehydrated noodles. This product can be stored for a long time as it prevents absorption of moisture. Therefore, the packaging materials used for this kind of products are relatively simple and cheap

3. Edible packaging

some advanced foreign troops are studying edible packaging. This kind of packaging is commonly used in inner packaging. On the one hand, it can reduce the volume and quality occupied by the packaging and increase the edible part of the whole set of food. On the other hand, it can improve the convenience of use and reduce food pollution, slag, etc. At present, our army has less research on edible packaging, but this will be a research content with great development prospects

4. Combined packaging

military food is usually composed of a variety of products. Such as canned food, compressed dry food, seasoning, etc. The packaging used when these products are combined into meal food or daily food according to certain nutrients is combined packaging. According to different use occasions, the materials used in the combined packaging are different. At present, the materials used for combined packaging include cartons, composite bags, plastic boxes, tinplate, etc. On the premise of providing protective performance, the most important principle of these materials is to reduce weight and price

5. Protective packaging

the requirements of modern war on military food are constantly improving. Due to the rapidity and maneuverability of operations, military food is required to withstand aerial and parachute drops, float on the water, and prevent damage and pollution caused by the explosion of various nuclear weapons. At present, foamed plastics and glass wool used as protective packaging

there is no response when pressing the up and down keys. Please cut off the power and wait for 5 minutes. The material can not only float on the water, but also better buffer the impact force generated by airdrop. The research in this area needs to be further strengthened

6. thermal insulation packaging

in order to improve the sensory acceptability of military food, the army has developed a self heating flameless heater. This kind of heater can heat the temperature of the center of canned food, which is generally an economic driving factor, to about 60 ℃. In order to effectively improve the efficiency of the heating sheet, prevent heat loss, and prevent skin scalding due to excessive temperature, thermal insulation materials are needed. This kind of packing material requires small volume and good heat insulation effect

7. Outer packaging

the outer packaging of military food now adopts cartons. It is expected that in the future, it may be combined with protective packaging to produce cardboard and plastic composite outer packaging

in general, military food packaging will develop towards lightweight, reliable, functional and biodegradable