What is the usual thickness of circular colored copperplate paper?

The thickness of circular colored copperplate paper is not fixed and depends on various factors, including the weight of the paper, the manufacturer, and the manufacturing process. Here are some common thickness ranges and corresponding weights of circular colored copperplate paper:

1. Common correspondence between weight and thickness:

105g/m ²: approximately 0.09mm

128g/m ²: approximately 0.11mm

157g/m ²: about 0.14mm (this is also the most widely chosen weight for copperplate paper in ordinary single page printing)

200g/m ²: approximately 0.17mm

230g/m ²: approximately 0.20mm

250g/m ²: approximately 0.21mm

300g/m ²: about 0.29mm (at this point, the hardness is already high, close to or equivalent to some cardboard)

350g/m ² and above: The thickness will continue to increase, but the specific value may vary depending on the brand and manufacturing process

2. Considerations for thickness variation:

Weight: The larger the weight, the thicker the paper, which is the most direct influencing factor.

Manufacturing process: Different manufacturing processes (such as coating process, pressing process, etc.) can affect the final thickness of the paper.

Paper fibers and fillers: The type of fibers and fillers in paper can also affect its thickness and physical properties.

3. The particularity of circular copperplate paper:

Although copperplate paper is usually cut into various shapes to meet different printing needs, circular copperplate paper does not have any special characteristics in manufacturing. Its thickness still follows the corresponding relationship between weight and thickness mentioned above.

It should be noted that when cutting copperplate paper into a circular shape, the thickness may be slightly affected by the processing of the cutting edges (such as grinding, calendering, etc.). But these effects are usually small enough to change the basic thickness characteristics of the paper.

In summary, the thickness range of circular colored copperplate paper depends on its weight and other manufacturing process factors. When selecting circular colored copperplate paper, the appropriate weight and thickness should be determined based on specific printing and design requirements.