The container market has become a springboard for water-based coatings

The world's annual container production is huge, container exterior paint value, a few years ago, the world's use of container coatings are basically solvent-based coatings, in recent years, the container industry water-based coatings have become an industry consensus, all over the country are unified implementation of new water-based environmental protection coatings, such as maersk Dongguan Container Industry Co., Ltd. in Guangdong, a factory specializing in the production of ordinary containers, the biggest difference here is that the working environment of the factory is more environmentally friendly and safe. The factory replaces the traditional oily paint with water-based paint. Paint industry issued a statement early on the container industry to self-discipline, each enterprise consciously use more environmentally friendly materials instead of traditional oil paint, this is called "common commitment, joint action", and this sentence is not just a slogan, we see from the actual effect of change
At present, China's container manufacturing enterprises VOC displacement of high enterprises from the "who environmental protection who lose money, who insist on who closes the door" situation, to who environmental protection who benefit, the hardships are self-evident, but the actual results are also obvious to all, the current container industry is more concentrated in the north to wide areas have gradually started to promote the use of water-based coatings, the future will also be in the national zoning limited time, the simultaneous implementation of new water-based environmental protection coatings. This year is a key year for the development of environmental protection industry, the domestic people's awareness of environmental protection has been generally improved, oil-to-water policy, from top to bottom, not only limited to container coating, but also all walks of life, since April 1, 2017, the national standard dry container manufacturers coating Production line, changed from solvent-based coating system to water-based paint system, water-based paint is water as a dispersion medium, popularly speaking, is water-based paint is painted with water, water paint in the spraying and drying process volatile water, its VOC emissions are very small. Data show that water-based coating VOC emissions can be reduced by 60% to 70% compared to solvent-based coatings. Therefore, water-based coatings are becoming more and more popular. The external box by solvent-based iron epoxy red primer with water-based epoxy intermediate paint and polyurethane paint as a matching, internal solvent-based epoxy primer with water-based epoxy primer, such a match can not only reduce the cost of water-based coating and control VOC emissions, in fact, not only the container industry, the paint industry to promote water-based is a general trend, water-based container coatings on solvent-based coatings are the main point of widespread concern.
the development trend and future outlook of water-based container coatings
In a comprehensive way, the emissions of traditional paints are cleaner, mostly naturally degradable substances and water, thus achieving environmental protection goals. However, it should be noted that some poor quality water-quality paint will lead to more problems, mainly because of its cumbersome technology, but also related to the self-discipline of enterprises, in this regard, we need more guidance. Water-based paint is not completely environmentally friendly, for people, no matter what kind of paint is harmful, but it is certain that the impact on the environment compared to traditional paint, has been very small, especially water-based paint in the continuous iteration and update, each generation of products are focused on environmental performance improvement. Because of the existence of zinc powder, water-based epoxy zinc-rich coating can effectively cathode protection of the box, delay the progress of tank corrosion, to prevent the paint film caused by bumps off, so the system has been unanimously recognized by the industry.water-based container coatings also have certain limitations, such as: high cost, high construction environment requirements, such as temperature, humidity, ventilation and so on will affect the performance of the paint, its own construction performance is relatively poor, workers are difficult to master. Because of the poor quality of this generation of products, construction difficulties, for the future domestic promotion of water-type paint caused great difficulty, as long as the workers who have been exposed to such water-type paint will be habitual resistance. The more products are sold, the more difficult it is to promote water-like paint. Temperature difference, water-type repair paint is one of the biggest shortcomings is the strict temperature requirements, between 5 to 35 degrees C work, which is a huge challenge to the construction. This raises a range of issues, such as the difficulty of storage and transportation, and the control of risks. Paint film, water-resistant paint film is thinner than oily paint, which means it is easy to be scratched. Water-resistant paint is also easy to crack, good quality water-like paint is not such a problem, good quality water-type paint, paint film gloss and fullness is not high paint; There are some water-like paint film hardness can not reach the level of oily paint, so when painting than oily paint several times, construction technical requirements are higher than oily paint. Domestic construction environment, domestic paint construction is often more extensive, most workers like high pressure, low viscosity paint, so that the most waste of paint, for paint, easy to cause dry spray, for water paint, easy to cause hemp. Energy consumption requires more energy than conventional paints, and sewage treatment, because water-based coatings contain a certain amount of water-soluble substances, makes wastewater from water-based spraying processes more difficult to treat than solvent-based wastewater. However, relatively speaking, container coating concentration is very high, sewage can be centralized treatment. In practical application, water-based paint on the construction process and material surface cleanliness requirements are very high, in addition to water resistance is a bit poor. This led many people in the decoration to give up this paint.
In total, China's water-based coatings demand in 2016 is about 1.89 million tons, accounting for less than 10% of the paint industry, with the acceleration of water-based coatings in steel structures, furniture, containers and other fields, it is expected that by 2022, China's water-based coatings market demand will reach 6.34 million tons, compound growth rate of more than 20%. The introduction of the "oil-to-water" policy has brought benefits to water-based coatings enterprises, and I believe that the popularization and application of water-based coatings in China will make long-term progress.