Printing Skills and Precautions for Coated Folding Box Board
Printing Skills and Precautions for Coated Folding Box Board
When printing on coated folding box board, several factors need to be considered to ensure high-quality results. These factors include ink properties, paper characteristics, and the overall printing process. Below are some key points to keep in mind:
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Concentration:
Ink with a higher concentration provides better color quality and requires less ink during printing. On the other hand, ink with lower concentration uses more ink and results in lighter color intensity. -
Fineness:
This refers to the size of the ink particles. High fineness means the ink is more concentrated, producing sharper and more vibrant print dots. Conversely, low fineness results in fuzzier print dots, reducing the printing rate and causing lower quality prints -
Viscosity:
Ink viscosity significantly affects the transfer process. High viscosity can lead to uneven ink transfer, causing issues such as fuzzy prints or flower patterns. Low viscosity, on the other hand, increases the risk of ink emulsification and dirtying the layout. -
Fluidity:
If the ink has too much fluidity, it can cause blurred and unclear images, with incomplete filling of ink on the paper. Conversely, if the ink lacks fluidity, it can lead to uneven ink distribution, causing inconsistencies in the print such as darker spots on the same print surface. -
Light Fastness:
Inks with good light fastness can maintain vibrant colors and retain the solid, three-dimensional appearance of the print over time. Poor light fastness will cause the color of printed products to fade, leading to dullness and inconsistency. -
Water, Acid, and Alkali Resistance:
For offset printing, it’s important to consider the ink's resistance to water, acid, and alkali. Inks with strong resistance will result in bright, clear, and layered prints. Poor resistance can cause the printed material to appear dark, weak, and less defined.
Whiteboard Paper Characteristics
Whiteboard paper, often used for coated folding box boards, must meet specific requirements to perform well in multi-color overprinting. Key characteristics of the paper include:
- Tight Texture and Smooth Surface: Ensures the ink is absorbed properly and prevents fuzziness or blotting during printing.
- Consistent Thickness and Lint-Free Surface: Allows for smooth ink application and prevents any unevenness in print quality.
- Absorbency and Low Expansion Rate: Helps the paper to handle multiple layers of ink without warping or smudging.
For box-making purposes, the paper should have high stiffness and strong folding resistance to withstand the demands of packaging and handling. The primary technical indicators for domestic single-sided whiteboard paper include:
- Basis Weight
- Tightness
- Sizing Degree
- Smoothness
- Whiteness
- Transverse Folding Resistance
- Transverse Stiffness
- Dustiness
- Moisture Content
Meeting these standards ensures that the paper will hold up during both the printing and folding processes, providing durable and high-quality packaging material.