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Flexographic printing is a common printing technique that utilizes flexible rubber or polymer plates to transfer ink and print images onto a substrate. This printing method is widely used in packaging, labeling, commercial printing, and some industrial applications. Here are the main steps of the flexographic printing process:
Image Preparation: The first step in flexographic printing is the creation of the printing plate. The plate can be made from rubber or polymer, and the image is transferred onto the plate surface. This can be done through methods such as digital plate making, laser engraving, or analog plate making.
Ink Preparation: Specific types of ink are used in flexographic printing, typically with lower viscosity to suit the transfer onto rubber or polymer plates. The choice of ink color and properties depends on the printing requirements.
Printing: During the printing process, ink is transferred onto the rubber or polymer plate and then from the plate onto the substrate. The printing unit of the press usually includes an impression roller, plate cylinder, printing plate, substrate, and printing pressure adjustments. The substrate is fed through the press between the impression roller and the plate, transferring the ink onto the substrate.
Drying of Printed Material: After printing, the printed material may need to be dried using drying equipment. This ensures thorough ink drying and prevents smudging and offsetting.
Finishing and Processing: Upon completion of printing, the printed material may undergo finishing processes such as cutting, folding, or laminating to achieve the final end product.
Flexographic printing is favored for its versatility across various materials, high-speed printing capabilities, and cost-effectiveness. It plays a significant role in industries such as packaging, labeling, newspapers, magazines, food packaging, and plastic bags. With its flexibility and efficiency, flexographic printing holds a crucial position in modern printing operations.
