Analysis of advantages of organic solvent type paper plastic film

Why is there still a considerable market for organic solvent-based paper and plastic coatings? The reasons are many.

First, the oily bridge laminating machine using organic solvent adhesives has been used for many years. The laminating machine technology is mature and the precision is high. Most of them are automatically fed into paper, and the machinery is expensive. These machines are generally not easy to be damaged and the maintenance is not complicated. ;

Second, the organic solvent-based plastic film and film coating technology has been promoted for several decades. The technology is mature and the product quality is guaranteed. Many companies and their technicians are reluctant to replace one of their own skilled equipment process technologies with oneself. Unfamiliar with new equipment and new process technologies;

Third, after years of cooperation with enterprises that supply organic solvent-based adhesives and coated enterprises, they have established a good friend-type relationship; both parties are reluctant to lose friends for this purpose;

Fourth, many oil-based companies have not yet found a water-based adhesive that can be used on oil-based machines;

Fifth, there is not enough promotion of the product of some types of plastic film adhesive;

Sixth, some coated plastic products have poor quality, or unstable production quality or are not suitable for high-end paper and plastic coated products such as book covers;

Seventh, the price of organic solvent-based film glue is cheaper than that of some water-based film glues, and some companies do not want water-based glue.

These are the reasons why organic solvent-based membranes do not hang down. Due to obvious problems of severe toxicity and environmental pollution and high filming costs, they have been banned from use in many enterprises or regions. Organic solvent-based adhesives are eventually eliminated. Sooner or later.

The surface coating is applied with light to make the surface of the printed product clean as a mirror, the color printing pattern is more colorful, and the ink is protected, and the whole printing paper or packaging is reinforced, and the packaging and the inner package are waterproof and moisture-proof. The effect, especially on the covers of books, journals, or transcripts, can increase the number of folds that the cover can withstand by thousands. However, there are also drawbacks in the process of coating paper and plastic film. This is the reason why the plastic film is not easy to remove and is not easily degraded when the printed and packaged product is recycled. Therefore, people concerned believe that the surface should be coated with a glazing oil instead of a paper plastic film. .

The use of surface finishes is substantially earlier than the use of paper and plastic coatings, but the previous finishes were mainly carried out in paper mills prior to printing, and the use of aqueous polymer finishes is now increasing. The quality of paper is getting better and better. After printing, no longer coating and laminating can satisfy the requirements of many products. However, the application of printing is still very small. Although it has the advantage of facilitating paper recycling, the disadvantages are also obvious.

The first is the effect of coating on the enhancement of the product and the number of folding times cannot be compared with that of the paper-plastic coated product; secondly, the protective effect of coating products on the color of printing ink, and the moisture-proof and waterproof function are not as well as the film-covered products; again, the current The quality and price ratio of varnish products is still not satisfactory, the gloss of waterborne varnish is obviously insufficient, the environment of organic solvent varnish is polluting the environment, the price of UV varnish oil is astonishing, and there are different degrees of environmental pollution problems. , The fundamental reason for the lack of strength of Varnishes in the color printing and packaging industry is caused by the insurmountable shortcomings that exist in comparison with paper plastic film products.