Dowling paper is a high-quality professional drawing paper commonly used in drawing, design, printing and calligraphy. It has excellent smoothness and transparency, is not easy to decolorize and deform, and can be applied to various painting and printing techniques.
Detection performance
The detection of Daolin paper needs to pay attention to the following main properties:
Thickness and density: The thickness and density of Dowling paper will directly affect its stability and use effect. Detection of thickness and density can be carried out by measuring indicators such as paper thickness, density and basis weight.
Paper strength: Dowling paper needs to have a certain strength to ensure its stability and durability. The detection of strength can be carried out by measuring the tensile strength, tear strength, folding endurance and other indicators of paper.
Smoothness: Dowling paper needs to have better smoothness to ensure stability and effect during painting and printing. The detection of smoothness can be carried out by measuring the smoothness of the paper surface, the height of hairiness and the convexity of the board.
Transparency: Dowling paper needs to have a certain degree of transparency to ensure the clarity and quality of painting and printing effects. The detection of transparency can be carried out by measuring the light transmittance and reflectivity of paper and other indicators.
Color: Daolin paper needs to have a certain color to ensure the color reproduction and quality of painting and printing effects. The detection of color can be carried out by measuring the color difference value and color uniformity of paper and other indicators.
Flexibility: Dowling paper needs to have a certain degree of flexibility to ensure that it is suitable for painting and printing. The detection of flexibility can be carried out by measuring the number of folds and bending of the paper.
Water resistance: Daolin paper needs to have certain water resistance to ensure its stability and use effect in humid environment. The detection of water resistance can be carried out by measuring the time and water absorption rate of paper soaked in water.
Environmental protection: Daolin paper needs to meet environmental protection standards, contain no harmful substances, and have no pollution to the environment. The detection of environmental protection can be carried out by measuring indicators such as volatile organic compounds, heavy metals, chloride ions and fluorescent whitening agents of paper.
Scope of application: Daolin paper is widely used, and Daolin paper for different purposes needs to have different performance requirements. The detection of the scope of application can be carried out by measuring indicators such as the applicable environment of the paper, the applicable painting technology and the applicable printing process.
Machinability: Daolin paper usually needs to be processed such as cutting, folding, and mounting, so it needs to have a certain degree of machinability. The detection of processability can be carried out by measuring the performance change and loss of paper in different processing processes.
Aging resistance: Daolin paper needs to have certain aging resistance to ensure its long-term preservation and use effect. The detection of aging resistance can be carried out by measuring the yellowing degree, fading degree, UV resistance and other indicators of the paper.
The above performance indicators are the key content of Daolin paper testing, and different use requirements and standards will also affect the testing standards and methods of paper.
