Non aromatic solvent inks and solvent based inks are environmental friendly ink, in the printing industry has been popularized gradually, the United States, Japan and other countries have been from the point of view of environmental protection consideration, to develop a variety of provisions, such as: reduce emissions of organic compounds to the atmosphere, reducing the dosage of fountain solution in the IPA (isopropyl alcohol) and alcohol, that is, to control the IPA and volatile organic compounds to the atmosphere in a hazard to human health, thus promoting the development of environmentally friendly ink. With China's accession to the establishment of WTO and OSHA, environmental awareness is also strengthened, especially in the food packaging industry, is gradually required to use non-toxic, non aromatic green ink for printing. Therefore, in accordance with the requirements of the market, China's ink manufacturing industry has actively invested a non-toxic, pollution-free environment-friendly ink. In this paper, we will discuss the tnv type offset solvent free ink (hereinafter referred to as tnv type ink) is a new type of environmentally friendly ink.

Characteristics of tnv type ink

1 Characteristics

Tnv type offset without solvent inks are mainly yellow tnv-, fuchsin tnv-, blue tnv-, tnv- black four varieties, the performance in the following aspects.

1).Tnv type ink, mineral oil content is less than or equal to 1%; printing and drying process without solvent evaporation to the air, is ideal environment-friendly products.

2) non-toxic, low flavor, suitable for packaging and printing;

3) has better water resistance, water balance and machine stability, can meet the Versamark per hour above the high-speed printing needs;

4). Has excellent resistance to friction performance and drying performance for printing on coated paper, also can be used for ink film anti friction performance requirements higher product printing;

5). With good printability and printing, printing dot clear, bright color, high concentration, good gloss;

6). With good brightness and transparency, gray balance stability, suitable for color printing.

The characteristics of 2.tnv type offset ink solvent free value

The characteristics of offset characterization of tnv type non solvent ink value of fluidity, viscosity, Sr value, fixing and drying time.

3.tnv type offset ink solvent tolerance value

In order to meet the requirements of the use of offset printing technology and printing, offset printing ink to have a certain resistance, the routine testing of resistant resistant indexes including ink of acid resistance, alkali resistance, light resistance, water resistance, resistance to alcohol.

The difference between the 4 solvent ink and offset light quick drying ink

No offset ink solvent and offset gloss quick drying ink difference is that no solvent ink in the drying process with no volatiles discharge, high content of membrane.

Tnv without solvent ink solvent volume and volatile components is almost zero, into the content of membrane material is much higher than the general offset gloss quick drying ink. From Figure 2 we can see that the solvent ink to paper not only solvent volatilization, no solvent penetration to paper, almost all of the material are fixed on the surface of the paper, thereby improving the friction resistance of the printed matter.

Application of tnv ink

Tnv offset printing solvent ink for coated paper, offset paper, light paper (matt coated paper such as printing four-color offset printing, is senior pictures, magazine, trademarks, brochures and exquisite paper packaging ideal ink printing.

1).Tpp-161 inking oil. Adjust the ink, ink used in small, high viscous liquidity.

2).Tpp-051 anti dirty. A sticky dirty phenomenon in four-color overprint, can add the additives in the last color ink.

3).Tpp-427 red dryness oil. The additives can accelerate the drying of the ink, ink drying can be a little slower to join the assistant.

The test shows that tnv type offset without solvent ink is not only using the process does not emit harmful gases, conducive to environmental protection, and printing effect is good, I believe the environmentally friendly ink will gradually replace the traditional offset printing ink.