The development of coating technology and the current status of pre-coating
The pre-coated film is the whole process that is completed by unwinding without any glue after being unrolled during the compounding process, directly through hot pressing, through heating and paper hot pressing.
Due to the importance attached to environmental protection in the 1970s by developed countries, the water-based coating technology was born in the 1970s. The water-based film coating technology should be said to have greatly improved environmental protection. This improvement has reduced the pollution of the film to the environment to a certain extent. The current standard of water-based film is out, but it still contains 100 grams of benzene or xylene per kilogram, and there is actually a small amount of pollution. In 1989, forced by the call for environmental protection, GBC in the United States first invented the pre-coating technology.
Since the pre-coating film itself is zero-pollution, it is quickly spread in the European, American, Japanese and Korean markets once it is launched. Data from 2009 shows that the US pre-coating film has reached 95%, Japan has reached 70%, Europe has reached 60%, South Korea has reached 50%, while China's pre-coating film share is only 10%.
Three advantages to promote the comprehensive replacement of pre-coated film
First of all, the pre-coating film itself is zero-pollution and environmentally friendly; second, because it is more exquisite and has higher adhesion, it has a higher quality level than solvent-based coatings and water-based coatings; third pre-coating The film speed is higher. In terms of film speed, the entire speed is about 20-30 meters due to the drying of solvent-based film and water-based film, and the speed of pre-coating technology can reach the fastest 120 meters. Now the international speed is generally between 100 and 120 meters, so it is only a matter of time before the full replacement. In fact, there is another important reason why companies choose pre-coated films. Pre-coated films can save labor costs very well. At present, pre-coated films can achieve a speed of 100 meters per person per minute, and immediate coating requires three people. The speed of the meter is nine times the relationship. Therefore, this has also become an important motivation for the pre-coated film to be fully replaced. In terms of energy consumption, it must be reduced. The pre-coated film only needs to be heated, and only 5 kilowatts per order is required.
In China, after twelve years of development and promotion, the whole industry has a certain understanding of pre-coating film; the formation of pre-coating film supplier industrial cluster; the advancement of pre-coating film industry technology has reduced costs; national policy Promoting and guiding are all important factors for the complete replacement of pre-coated films. Whether it is to improve quality, save costs, or assume responsibility to promote environmental protection, pre-coating is an inevitable choice for printing companies.
Nowadays, the pre-coating film is no longer expensive to go down the altar. The pre-coating film is now equal to the solvent-based and water-based instant coating film.
It is also known that digital films have become an important trend in development. The special film is represented by soft mask and anti-scratch film, which also provides more options for additional functions for printed products. As far as pre-coating film is concerned, it has already crossed the field of printing and started to develop into new fields.
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