Offset Ink Additive Introduction | |
Product Name | Product introduction and use |
Dilution agent | Dilution agents, also known as de-eluting agents, Willy oil, are relatively large additives used in offset printing. There are two kinds of ordinary diluting and advanced dilution of the dilute agent. If the ink color is too dark to be restored in the printing, the appropriate amount of the dilute agent can be added to achieve the desired effect. Net weight: 1KG and 2.5KG fineness 10 um fluidity 33-36 |
Desiccant | Desiccant is one of the most important printing ink additives. The amount, type and method of use of the desiccant vary depending on the printing conditions and the printing paper. Commonly used desiccants are red dry oil and white dry oil. Drying of red dry oil is from outside to inside, while white bath oil is dry inside and outside. When printing, I chose the type of dry oil according to the requirements of printing dryness and ink color. Generally, the amount of dry oil is 2%-3%, and too much will be suitable for the base, so that the drying speed is lowered. |
Antioxidants | The antioxidant is an ink additive as opposed to a desiccant. During the printing process, it often causes downtime for various reasons. When the downtime is long, the ink on the surface will dry and peel. In order to solve such problems, it is often necessary to add an appropriate amount of anti-drying agent to the ink on the machine, and run the machine a few times to make it dry too fast. |
Bright oil | The varnish can form a bright film on the surface of the printed matter, which provides a bright light protection effect and a long-lasting and stable gloss. |
Abrasive agent | Anti-friction agents are also called smoothing agents. Most of these substances are mainly waxy substances. When the printing ink particles are coarse, such as white ink, gold and silver ink, etc., add appropriate amount of anti-friction agent to increase the abrasion resistance of the printed matter. Smoothness |
Detacking agent | Detackers have very low tack and are commonly used in lithographic and letterpress inks to reduce their tack. In offset printing, due to changes in paper properties and printing conditions, such as large oil absorption, poor surface strength, and uneven coating on the front and back sides, when the desiccant is excessive or the room temperature in the printing room is too low, the paper may be pulled and printed. Stacking, paste, and other failures affect the quality of printed products. Therefore, when the above phenomenon occurs, an appropriate amount of debonding agent can be added to reduce or eliminate the above failure. |
Moisture oil | The varnish reduces the viscosity of the ink and increases the fluidity of the ink without affecting the drying speed of the ink layer. |
Matting oil | Matte oil, plays a role in matting and protection in printing. |
Tackifier | Increase ink viscosity and reduce fluidity. |