Is circular colored copperplate paper prone to curling or deformation?

Circular colored copperplate paper is indeed relatively easy to curl or deform, mainly due to its material characteristics and manufacturing process. The following is a detailed analysis of this issue:

1、 Material characteristics

Fiber distribution: Although the fiber distribution of copperplate paper is relatively uniform and the thickness is consistent, its elasticity cannot be completely ignored. Under specific environmental conditions, such as changes in humidity and temperature, paper fibers may undergo slight expansion or contraction due to water absorption or loss, resulting in paper curling or deformation.

Surface coating: The surface of copperplate paper is coated with a layer of white paste and subjected to calendering treatment. Although this coating improves the glossiness and printing effect of the paper, it may also affect the stability and deformation resistance of the paper to some extent.

2、 Manufacturing process

Polishing treatment: During the polishing process, the paper may be subjected to certain mechanical pressure, causing slight changes in the internal fiber structure. These changes may gradually become apparent during subsequent use and storage, manifested as curling or deformation of the paper.

Coating method: There may be differences in curling or deformation between single-sided and double-sided coated copperplate paper. Double coated paper may have relatively stronger stability and deformation resistance due to both sides being coated and calendered.

3、 Environmental factors have an impact

Humidity change: Humidity is one of the main factors affecting paper curling or deformation. When the environmental humidity is high, paper is prone to absorb water and expand; When the environmental humidity is low, the paper will lose water and shrink. This process of absorbing or losing water can cause the paper fibers to stretch and curl or deform.

Temperature changes: Changes in temperature can also cause paper to curl or deform. High temperatures may cause paper fibers to become soft and undergo minor deformations; However, low temperatures may cause paper fibers to shrink and result in paper curling.

4、 Preventive measures

Reasonable storage: In order to maintain the flatness and stability of circular colored copperplate paper, it should be stored in a dry, ventilated, and dark environment. Avoid prolonged exposure to high temperatures, high humidity, or direct sunlight.

Using professional equipment: During the printing process, using a professional flattening machine or calender to flatten the paper can effectively eliminate curling or deformation of the paper.

Pay attention to printing process: During the printing process, pay attention to controlling the viscosity, fluidity, and printing pressure of the ink to avoid paper curling or deformation caused by improper printing process.

In summary, circular colored copperplate paper is relatively easy to curl or deform, mainly due to its material characteristics and manufacturing process. However, by implementing reasonable storage, using professional equipment, and paying attention to printing processes, the risk of paper curling or deformation can be effectively reduced.