Color printing film laminating coating requirements

With the continuous improvement of people’s living standards, the pursuit of the outer packaging of goods will become stronger and stronger. The number of books and journals and the cover of the notebook will be more resistant to folding, and the aging resistance will become stronger and stronger. There will be more and more considerations. For the future packaging and printing industry, there will be some of the following important trends:

Taking into account the many advantages of paper plastic film, this kind of decoration method will not be eliminated in the past ten years or even decades. On the one hand, the recycling technology of paper and packaging used in paper plastic film has become larger. As a result, there have been some special beating filters to remove the equipment containing waste paper and plastic coated waste and more advanced recycling processes.

On the other hand, as soon as possible, the recyclable water re-dispersible or dissolvable plastic film and the adhesive for the film should also be developed. When the paper and plastic film products made of the glue and the film are recyclable, they are suitable for use in water. Under conditions such as acid or alkali and agitation under appropriate temperature and pressure, it can be dispersed or dissolved in the pulp and become part of the pulp, which has a reinforcing effect on the paper produced from recycled raw materials. From the perspective of research and development in this regard, water-based paper-plastic coated glue is relatively easy to re-dissolve or disperse water when recycled, and plastic film is much more difficult to disperse after paper-plastic coating, the main problem is how to reduce The cost of the product is comparable to that of BOPP plastic film.

The ideal environment-friendly varnish is environmental-friendly during and after use, and the product does not contain any volatile organic substances or its content is negligible. The product after glossing is not only glossy but also flexible , It is not easy to be stained, not easily broken or scratched, has the equivalent folding resistance, water resistance and reinforcement effect as the carton coated product; after the use of the product, it is easy to recycle, that is, in water or suitable acid, alkali or other. Under the conditions of chemicals, heating and agitation, these cured oils are easily dissolved and dispersed in the pulp and become part of the pulp. Judging from the current application research situation, water-based coating oils have to do this, and there are no technical obstacles. The cost of the coated products is much higher than the cost of paper-plastic coatings.

Nowadays, almost all BOPP or polypropylene biaxially stretched films are used in paper and plastic films. The advantages of such films are low cost, good gloss, and high light transmittance, but the biggest drawback is insufficient aging resistance, especially light resistance. The degradation performance is poor. Therefore, the use of this film to pack upscale collections of books or diaries and high-grade gift boxes and other collections and printed items has obvious deficiencies. Before long, these BOPP plastic films will be degraded and lose their luster, while the BET film That is, polyethylene terephthalate resin film does not have this problem, but the price is more than 30% more expensive, but for high-end books and packages that may be permanently stored is not what, but many people do not realize this One problem is nothing.

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