How the hottest packaging enterprises enter the mi

How packaging enterprises enter the military food market (I)

1. Hard cans

hard cans are mainly used in collective food in field food or in general food according to the current situation of the army. Future development direction of hard can packaging:

A. easy to open lid: as mentioned above, hard can has the disadvantage of being difficult to open. In recent years, a number of easy to open lids have been introduced into military food, such as 962 cans with a diameter of 90 mm and eight treasure porridge cans with a smaller caliber. But this cannot meet the requirements of military cans. Because the most used military cans are 1068 cans with a diameter of 100 mm. Due to technical reasons, such a large caliber easy to open cover is not qualified in China. In addition, the easy opening cover also has technical problems such as easy fracture of the pull ring and uneven depth of the scribed line. Therefore, the development of easy to open hard cans is one of the main directions for the development of military cans in the future

b. shaped cans: the country shows special textures through original technology. In fact, the army adopts a rectangular flat can, which is made of chrome plated tinplate and contains 3kg of food. It is actually a two-piece can, which is composed of a bottom and a cover. This kind of can can can be used as a cooker and can be heated and kept warm on a fire or on a steam pot; It can also be used as tableware to replace dishes and bowls, which improves the convenience of military food. At the same time, it is also a storage container. At present, China does not have the ability to produce such large rectangular cans. Its technical difficulty mainly lies in the high scrap rate during sealing, which leads to high production cost and cannot be applied

2. Soft packaging

according to the current situation of the army, soft packaging cans are mainly used in individual food in field food. If the technology is improved, it may also be used for collective food. In the future, soft can packaging will develop in the following directions:

A. aluminum foil bag: aluminum foil has good barrier property, including gas and light. However, the anti wrinkle ability is poor. In the case of wrinkle, aluminum foil is prone to fracture and other problems. By compounding with other materials, 5 The low temperature constant temperature bath should be placed in a dry and ventilated place to improve the wrinkle resistance, which is a research direction in the future

b. composite materials: through the composite of materials with high resistance, stab resistance, high temperature resistance, etc., new flexible packaging bags are manufactured. This kind of bag has a prominent advantage over aluminum foil bag, that is, it can be heated in microwave, but its shading property is poor, so some measures need to be taken to make up for it

c. heat sealing layer: in the production of soft cans, if the mouth of the bag is polluted, such as oil stains, the sealing is sometimes not tight, or the strength is reduced, which has a great impact on the production speed and the product quality. At present, relevant experts are discussing the use of new heat sealing layer, which still has a good sealing strength in the case of oil stains. 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 simple field operation is convenient, and the field food stored in the warehouse 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 by adding smells that mice don't like to 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

developing new semi hard canning materials will be one of the development directions of military canning in the future

a. aluminum plastic packaging: used by foreign troops in some field food. 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 and clamped 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

4. 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. Most military dried foods contain oil, some of which are relatively high, 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

5. 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