Drum coating and environmental problems

Drum coating and environmental problems

1 Q: The relationship between steel drums and the environment?

A: Since the 1990s, the environment and development have become a focus issue in today's society. With the economic development and the improvement of people’s living standards, the voice of environmental protection has also spread throughout the world. The packaging industry, which is closely related to human life, has also been affected more and more. The pollution caused by packaging is also becoming more and more of concern. Domestic and foreign packaging industries have spent countless efforts to reduce the pollution to the environment. Nevertheless, the packaging industry, like all other industrial sectors, has not solved the problem of pollution to the environment, that is, the impact on public environmental hygiene, and the packaging has been completed. After the packaging function, how to deal with the waste. Environmental problems in the manufacturing process of packaging materials, environmental pollution in use, environmental pollution caused by unreasonable product design, and recycling after use are all problems that the packaging industry should solve. They are problems that the packaging industry should solve. . According to a survey conducted by the United States, the opinions of the environmental protection department on the packaging industry mainly include the following three aspects. The first is that if there is too much packaging of goods, it should be used as little or as little as possible; second, it should be possible to recycle packaging containers; third, those packaging materials that cannot be recycled should be biodegradable. The material, in this way, can be biodegraded after use and no longer harm the public environment. The opinions of the environmental protection agencies basically pointed out the development direction of global green packaging. Drum coating materials and environmental protection For many years, the coating of steel drums in China has not developed much. It has only been improved from the coating process. Although it has also reduced a lot of environmental pollution, the paint coating process The pollution brought by it is still a major drawback in the production of steel drums. In order to eliminate the pollution caused by paint, many new environmentally friendly coatings have emerged in the country in recent years. The use and popularity of these new coatings will make steel drums a big step forward on the road to green packaging. Prepainting is a major change in coatings. It shifts the product from the final finished coating to the coating of raw materials, thereby reducing the contamination of the coating process. Current galvanized steel sheets, tin-plated steel sheets, and color printing steel sheets predominate in pre-painted steel sheets. Pre-painted coatings are mainly organic composite coatings, which were first developed by Japan. Organic composite coatings are mainly made of organic high-molecular polymers, silicon oxide, etc., made of organic composite resins, and then added with cross-linking agents and functional pigments. China's iron-plated steel plate is limited to tinplate, and the printing of common steel plate in foreign countries has already appeared. Self-swimming paint is a new type of water-based paint developed after the anion and anode electrophoretic coating. This type of coating is made by mixing acrylic emulsion with carbon black, additives, etc. The emulsion is formed by copolymerization of acrylic acid monomer and styrene in the presence of an initiator and an emulsion. It is characterized by water as a dispersion system, does not contain any organic solvents, conforms to international regulations and is conducive to environmental protection. In addition, the prepared bath is stable in performance, convenient for construction operations, and belongs to a clean process, which is beneficial to the health and safety of employees. Paste coating is a kind of polymer film coated with colored paint and adhesive. Due to its good durability and weather resistance, it can be easily applied on the outer surface of the barrel. Because it replaces solvent-based liquid coatings, it is a revolutionary new coating for environmental protection. Because this type of paint is easy to use and easy to operate, it has been put into use in large quantities in Japan and the United States. Presumably in the near future, China will also be popularized.

2 Q: What about the import and export packaging inspection?

A: The packaging problem of China's import and export commodities has been particularly large. In recent years, with the WTO's accession and the increase in foreign trade, the problem has become even greater. However, it has not received much attention and improvement so far. The main producers of goods and packaging manufacturers are disgusted with the supervision and inspection of the Commodity Inspection Bureau. Understanding is a hindrance to themselves, so it is mainly to cope with it. Sometimes the quality of the packaged product is good, but the bulk of the packaged product is often of poor quality. The author once visited a number of packaging production plants. Most people do not even understand the basics of commodity inspection. It is not relevant to them to know that these are matters of the commodity inspection authorities. Therefore, problems continue to emerge and increase. For this reason, the author will sort out the relevant issues of import and export packaging inspection, and hope to provide helpful help to packaging producers. First, the packaging conditions of goods in the import and export trade, the important significance of commodities except a few can be bare (such as wood, aluminum ingot, pig iron) and bulk (such as wheat, sugar, ore), all need a certain amount of packaging. The role of packaging for goods is mainly to protect the goods, facilitate transportation, storage, distribution, sales and consumption. Packaging is also a means to increase the added value of goods and expand sales. The packaging of exported goods should meet the requirements of science, economy, firmness, beauty and marketability. This is because: (1) Exports are still dominated by marine transport. Marine transport is characterized by long transport times and large changes in climate. Therefore, commodity packaging must be based on The characteristics of different commodities are scientifically managed and must be suitable for long-distance transportation. For example, there must be ventilation holes in fresh food packaging, and the air holes in the inner and outer layers must be able to meet the requirement of mutual ventilation. Fragile glassware, ceramics, enamel products, etc. must be well lined with septa to prevent crushing. If the outer packaging of the goods is a wooden box or a cardboard box, attention should be paid to the reinforcement of the bandage, which can withstand stacking and prevent the outer packaging from breaking apart when being loaded or unloaded. (2) The practical appearance of packaging is to meet the needs of international market competition, and it is easy to transport (for example, suitable for containers and pallets), and it is easy to display (for example, small packaging suitable for supermarket display) is also a necessary condition for expanding sales. In addition, it also meets the requirements of the importing country regarding the requirements or limitations of commodities. If some countries do not allow the import of sacks, some countries must not use straw for cushioning. (3) Packaging is a means to increase the added value of goods. Therefore, under the conditions of scientific, firm, aesthetic, and marketable packaging, the packaging of goods must also be carefully planned to increase the actual economic benefits after the export of goods is improved. The packaging of imported goods also plays an important role in ensuring that imported materials can be delivered safely and in a timely manner, as well as in the production and construction and convenience of consumption. In transaction negotiation, contracting, and performance, all parties should seriously treat, correctly select, and clearly define the packaging conditions.

Source: Shenzhen Packaging Network