Important Technology Of Packaging Box Printing

The important processes of packaging box printing include a variety of technologies, which together ensure the exquisite appearance, durability and functionality of the packaging box.

The following are some key packaging box printing processes:

I. Traditional printing process

Relief printing:

The ink is transferred to the substrate through the raised printing plate to form the image and text. This printing method is suitable for packaging box printing with clear text and distinct lines.

Offset printing (offset printing):

Using the principle that oil and water are immiscible, the image and text part is inked and the non-image and text part is hydrophilic, thereby realizing the image and text transfer.

Offset printing has the characteristics of high printing quality and strong adaptability, and is widely used in packaging box printing.

Gravure printing:

The ink is transferred to the substrate through the recessed printing plate to form the image and text. The ink layer of gravure printing is thick and colorful, which is suitable for the printing of high-end packaging boxes.

II. Modern printing process

Digital printing:

Using digital technology, the image and text information is directly printed on the substrate.

Digital printing has the characteristics of fast speed, high flexibility and strong personalization, and is suitable for small batch and multi-variety packaging box printing.

UV printing:

Using ultraviolet curing ink for printing, the ink dries instantly and has the characteristics of bright colors and high gloss. UV printing is often used for local glazing, hot stamping and other effects of packaging boxes.

3. Post-processing technology

Laminating:

A transparent plastic film is applied to the surface of the printed matter by hot pressing to protect and increase the gloss.

Laminating is divided into bright film and matte film, which can be selected according to needs. The packaging box after laminating is more beautiful and durable.

Hot stamping/silver stamping:

The aluminum layer in the electroplated aluminum is transferred to the surface of the substrate by the principle of hot pressing transfer to form a metallic gloss effect.

Hot stamping/silver stamping is often used in the trademark, brand logo and other locations of the packaging box to improve the product grade.

Glazing:

Apply a colorless transparent coating on the surface of the printed matter to form a thin and uniform transparent glossy layer, enhance the smoothness of the carrier surface, and protect the printed graphics.

Glazing technology is often used in the cover, insert and other locations of the packaging box to enhance the visual effect.

Embossed:

Using a convex and concave mold, under a certain pressure, the printed substrate undergoes plastic deformation to form a relief pattern.

Embossed stamping increases the three-dimensional sense and artistic appeal of the packaging box.

Die-cutting and creasing:

Die-cutting is the process of rolling and cutting paper into a certain shape, which is suitable for the forming of packaging boxes.

Creasing is to use steel wire to press out marks on paper or leave grooves for bending, which is convenient for folding and forming of packaging boxes.

IV. Special process

Reverse frosting:

Through special primer and varnish treatment, local high gloss and local frosted low gloss areas are formed to achieve high contrast effect.

Reverse frosting process is often used for local decoration of packaging boxes to enhance visual effects.

Freezing point snowflake effect:

The ink is screen-printed on gold cardboard, silver cardboard and other substrates. After wrinkling under ultraviolet light and UV light curing, it forms an effect with fine sand feeling and delicate touch.

This effect can produce a unique visual and tactile experience on the packaging box.

In summary, the important processes of packaging box printing include traditional printing process, modern printing process, post-processing process and special process.

These processes together ensure the exquisite appearance, durability and functionality of the packaging box, and meet the needs and expectations of different customers.