Ink drying more complex, there are the following three forms.
Osmotic drying. Some of the binders in the ink penetrate into the substrate, and the other part is fixed on the surface of the substrate together with the pigment and dry. The non thermosetting rotary ink used in high-speed web press is mainly used to print newspapers and periodicals.
Oxidation polymerization drying. The binder in the ink polymerizes with oxygen in the air, forming a film on the substrate surface and drying. Offset bright resin ink, bright color, good gloss, mainly oxidation polymerization drying, used to print high-grade fine offset products.
Volatilization drying. Part of the ink binder, volatile to the air, the remaining binder and pigment fixed on the substrate surface and dry. Gravure printing ink is made of volatile solvent, which is harmful to human body. At present, water-based ink with water as solvent has been developed for gravure printing and flexographic printing, which reduces environmental pollution and has a bright future. Volatile dry ink is especially suitable for printing non absorbent film materials, such as plastic film, metal foil, etc.
In addition, the drying of ink has ultraviolet, infrared, heat curing and other forms.
Dongguan Beite packaging materials Co., Ltd. - located in Dongguan City, the world's manufacturing city, is a subsidiary of Beite packaging (China) Co., Ltd., with a plant area of 6000 square meters. It is a flexible packaging enterprise integrating R & D, production and sales. It has a complete set of domestic advanced production equipment, a scientific and humanized management system and a group of experienced technical personnel For backing, to provide customers with quality products and first-class service.
The company produces composite bags, roll film, fruit bags, aluminum foil bags, suction mouth bags, self-supporting bags, zipper bags, anti-static bags, special-shaped bags, etc., which are suitable for the internal and external packaging of food, daily chemicals, electronics, toys, medicine, cosmetics, industrial products and other industries.
We uphold the integrity of cooperation, good quality, good service business philosophy, won the industry's approval, products sold to all over the world; welcome friends from all walks of life to inquire, visit our factory to investigate guidance and business negotiations.