To distinguish the different quality of coated paper, you can consider the following aspects:
Observe the visual effects:
Gloss: In general, the same gram weight of coated paper, the higher the gloss, the better the quality is usually. The gloss of high-quality coated paper should generally be greater than 80 degrees.
Color depth and uniformity: Observe whether the color of the coated paper is bright and uniform, and there is no obvious color difference or spots.
Comparative feel:
Thickness and texture: high-quality coated paper is usually thicker and more delicate. You can feel the thickness and uniformity of the paper by touching it.
Softness: Although coated paper is usually thicker, it should not be too stiff. Good quality coated paper should have a certain softness while maintaining a certain thickness.
Perform a simple test:
Paper folding test: Fold the coated paper in half and open it to observe whether cracks appear at the folding corner. High-quality coated paper is not prone to cracks after folding.
Ink absorption test: you can smear some ink on the paper or print some content to observe whether the ink is uniform, clear, and the effect after drying. Good ink absorption coated paper can print more vivid, rich layers of images.
View product specifications and standards:
Gram weight and thickness: Generally speaking, the gram weight of coated paper is between 70 and 250g/ square meter, and the thickness should be greater than 0.03 mm. The gram weight and thickness of coated paper can be checked according to the product specification sheet.
Strength indicators: such as folding resistance, damage resistance, etc., are also important indicators to measure the quality of coated paper. These can usually be found in the product description or technical specifications.
Learn about the brand and production process:
Well-known brands: Choosing a well-known brand of coated paper is usually more likely to obtain a high quality product. These brands often have strict quality control and advanced production processes.
Production process: Understanding the production process of coated paper also helps to judge its quality. For example, coated paper that has been super calendered usually has a higher smoothness and gloss.
In summary, by observing the visual effect, comparing the feel, conducting simple tests, viewing product specifications and standards, and understanding the brand and production process, you can effectively distinguish different quality coated paper.