What factors affect the print quality of tag coated paper?
The print quality of tag coated paper is affected by a variety of factors, which can be roughly summarized as follows:
1. Paper performance
Surface strength: The surface strength of coated paper refers to the degree of combination between the paper fiber tissue, filler and adhesive or between the paper surface coating particles and the coating and the paper base. Paper with low surface strength is prone to hair loss and powder loss in the printing process, resulting in paste and affecting the printing quality.
Smoothness: Smoothness is a technical index to evaluate the degree of concavity of the surface of the paper. The paper with high smoothness is conducive to fine restoration of small dots, clear graphics and full colors. On the contrary, the surface of the paper with poor smoothness is rough, the ink transfer is uneven, and it is easy to lose small dots, affecting the printing effect.
Whiteness: The whiteness of the paper refers to the ability of the paper to reflect comprehensively after light irradiation, which is a key factor in determining whether the printed product is bright or not. The paper with high whiteness can more truly reflect the color of the printed picture.
Gloss: Glossy paper with high gloss produces more beautiful, vivid pictures with better texture. Gloss not only affects the visual effect, but also relates to the inking efficiency of the paper.
Absorbency: The absorbency of the paper refers to the ability of the paper to absorb the binder and its solvent in the ink. Too strong or too weak absorption will affect the printing hue and ink layer gloss.
2. Printing equipment and process
Printing pressure: The appropriate printing pressure is conducive to the transfer of ink and the contact between the paper and the plate, but too much pressure may lead to the spread of ink and the increase of the dot, affecting the printing quality.
Ink selection: the viscosity, dryness and other characteristics of the ink should match the performance of the paper to ensure a good printing effect.
Printing speed: Too fast printing speed may affect the drying of ink and the deformation of paper, thus affecting the printing quality.
3. Environmental factors
Temperature and humidity: coated paper in its production and storage process is susceptible to temperature and humidity, curling deformation. Maintaining the balance of ambient temperature and humidity helps to reduce the impact of paper deformation on printing quality.
Storage conditions: Long-term storage or improper storage conditions may lead to problems such as aging and yellowing of the paper, which will affect the print quality.
4. Operational factors
Preparation before printing: such as the flatness and curvature of the paper, it will affect the smoothness and print quality of the paper in the printing process.
Cutting process: Improper pressure control during cutting may lead to "slip" or "shift" phenomenon, affecting the quality of the finished product.
In summary, the print quality of the tag coated paper is affected by many aspects such as paper performance, printing equipment and process, environmental factors and operational factors. In practical applications, these factors need to be considered according to the specific situation to ensure high-quality printing results.
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