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At present, China's tinplate barrel (can) companies are facing three major issues and two certifications. The three major courses are: equipment renewal, raw materials first use and environmental protection. The two certifications are ISO14000 and ISO9000. Those who completed the above-mentioned issues correctly and effectively at an early date will be able to gain a place in the market competition and gain development.
Nowadays, many companies have entered the erroneous zone of pursuing low prices in purchasing raw materials, which is worrying. In fact, the real way to reduce costs should be to pay close attention to the development of raw materials and rational use, and it is the scientific attitude to ensure quality and reduce costs. As we all know, the three basic materials used for printing cans are: tinplate, paint ink and sealant, of which tinplate is the most important.
One, tinplate
1, to thin generation thick: the pursuit of China's application history, hot-soaked tinplate used in the 50 to 60 years, the tin layer is more than 100#; 70 years of use of electroplated tinplate, tin layer is 50#-100#; 90 years tin layer thinner 10# low-tin iron and chrome-plated iron appear separately. In addition to the thin layer thickness of the tin layer, more articles can be made on the substrate. If calculated according to the conventional size: 512×712m/m, the thickness of 0.2m/m iron is 1750 per ton, and the thickness of 0.23m/m iron is 1 520 per ton, 0.20m/m iron is used instead of 0.23m/m iron. Barrels (cans), according to 5500 yuan / ton price calculation, can save about 825 yuan.
We then consider coiled tinplates to be trimmed on their own, which in turn saves costs in terms of purchase and utilization.
The thickness of 0.16m/m tinplate (secondary cold-rolled tinplate) has now been used to make barrels (cans) and lids, making the outlook for cost reduction more optimistic. In fact, it has been widely used abroad. China has just started, and it must adapt to printing iron, barrels (cans), and lid making equipment.
2, laminating iron: iron film is completely tin-free, but directly to the plastic film through a special melting process tightly fit on the surface of the steel sheet, with paint tinplate can not be compared to the excellent anti-corrosion and barrel (cans) Performance is a new type of barrel (tank) material with promising development. Using it to make two-piece cans can replace three-piece cans for food or beverage cans.
Second, paint ink
Coating inks are very important for low-tin-content iron and chrome-plated iron. Without good coating inks, it is impossible to have practical value of low tin-iron or chrome-plated iron. Now, Origen has been producing tomato sauce cans, which are resistant to high acid corrosion food cans. The coating must use acid-resistant epoxy phenolic coatings. The coating process and film thickness must also be strictly controlled to ensure that The compactness of the film, as well as the balance of corrosion resistance and adhesion.
Third, sealant
At present, China has a lot of sealant production plants, its formulations are similar to the United States Grace products, there will be no great differences in performance. Therefore, to ensure the quality of the sealing of the barrel (tank), it is better to concentrate more energy on the material and design of the sealing roller than the sealant.
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Changzhou Longfu Knitting Co., Ltd. , https://www.czcircularmachine.com