Market analysis of steel plates for the hottest co

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Market analysis of steel plates for containers

the output of metal cans in Japan in 2003 was 33.7 billion, a decrease of 4.3% over the previous year, mainly due to the gradual replacement of steel cans after the lifting of the ban on small pet bottles in 1997. Aluminum accounts for 52% and steel 48% of metal cans. Tinplate for steel cans decreased from 1.7 million tons in 1994 to 1.12 million tons in 2003, and composite tinplate decreased from 1.9 million tons to 870000 tons, mainly due to the reduction of containers for food. The major progress of metal cans in recent years is the production of two-stage cans by laminate and deep drawing method, which was successfully developed by tulc in 1992. In 2003, the cans produced by this method accounted for 20% of the total, and the cans produced by welding laminated materials accounted for more than 60% of the total steel cans. 1) The laminating material of can laminate

tulc is to apply polyester film on the composite plating plate, that is, the cleaning film is used inside the can, and the white film is used outside the can. At present, tulc has 5 laminate production lines, 3 basic laminate production lines, and 2 composite plating plate and film direct lamination production lines. The water consumption of the canning production line of the company is only 1/20 of that in the past. The cleaning, spray cooling and other processes are omitted. The floor area is only 1/2 of that in the past, and the CO2 emission is only 1/3 of that in the past. It can be called a clean process. There are also three piece cans welded from laminates, which are laminated with concave printed film in advance, resulting in a very beautiful appearance, and are sold under the names of laminated cans and crystal cans

2) non extensible polyester film laminating material and extruded coating laminating material

the technology of using non extensible polyester film produced by the non extensible film making method of extruding molten plastic with extruder as laminating material has also been successfully developed. The increase of molecular weight of non extensible film plastic is conducive to improving the impact resistance and corrosion resistance of laminating material. The laminated material without extension film has been made into beer cans for sale by Tec company

this method, which omits the film making process and extrudes the heated plate into a coated laminate by extruding the molten polyester plastic through an extruder, has been successfully developed and the product has been used for can covers and stamping small products. For the coating laminate with polyester film attached on both sides of aluminum plate by extrusion, DEC company has successfully developed it and used it in beer bottles. In a word, the plastic can be directly plated on the metal plate by extrusion forming coating, which is very conducive to reducing the cost, so it has a bright future

3) recycling

the steel tank shell can be separated by electromagnet and recycled separately, which is more convenient than the recycling of aluminum tank shell. Taking the recycling rate in 2003 as an example, the steel tank shell was 87.5% and the aluminum tank shell was 81.8%, which was much higher than the 48.5% of PET bottles, which also illustrates this point

4) future development trend

since entering the 21st century, under the guidance of the strategic policy of sustainable development, safety and clip installation should not be completely locked. Environmental priority, green procurement of equipment and the expansion of the application of clean energy have made progress, which can be described as entering the era of environmental management. From this point of view, the proportion of laminates in food container materials will increase in the future

in developed countries, the demand for food containers is basically close to saturation, but in the majority b) according to the instigation type of measurement end, it is important, rare, obvious and pointer; Developing countries still have a lot of room for development. Recently, the technology of harmonious canning without water and solvent and the technology of using laminated materials to produce high-strength cans have been applied, and people have paid attention to it. Many developing countries are short of water resources, coupled with the need to ensure the intensity of long-distance transportation of cans, the above-mentioned advanced technology has great prospects for development

from: World Metal Herald

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