What should I pay attention to when printing BOPP synthetic paper?

When printing BOPP synthetic paper, the following key issues need to be noted:

1, Ink selection

Ink adaptability: Due to the smooth surface of BOPP synthetic paper, the absorption of ink is poor, so it is necessary to choose an ink specially designed for synthetic paper, such as synthetic paper ink. This ink usually has good drying performance, friction resistance and adhesion ability to ensure printing effect and quality.

Ink viscosity: Adjust the viscosity of the ink according to the type and speed of the press to ensure that the ink can be evenly transferred and firmly attached to the surface of the paper during the printing process.

2. Printing process

Tension control: BOPP synthetic paper requires proper tension control during the printing process to avoid paper distortion or tearing. Too much tension may lead to tensile deformation of the paper, and too little tension may affect the overprinting accuracy.

Overprinting accuracy: Because BOPP synthetic paper has a certain elasticity, it is difficult to overprint, so it is necessary to fully consider its printing deformation when designing the pattern, and fine-adjust the overprinting parameters during the printing process to ensure that the overprinting is accurate.

Drying temperature: BOPP synthetic paper needs a proper drying temperature to cure the ink after printing. Too high a drying temperature may cause the paper to deform or the ink to over-cure, while too low a drying temperature may affect the drying speed and adhesion of the ink. Therefore, it is necessary to choose the appropriate drying temperature according to the ink type and paper characteristics.

3. Equipment and environment

Printing equipment: Select the equipment suitable for BOPP synthetic paper printing to ensure that the accuracy and stability of the equipment meet the printing requirements. At the same time, regular maintenance and maintenance of the equipment to ensure printing quality and efficiency.

Environmental control: The printing workshop should maintain appropriate temperature and humidity conditions to reduce problems such as paper moisture absorption deformation and poor ink drying. Especially for film materials that are easy to absorb moisture and deform, such as BOPA, it is necessary to strictly control the ambient humidity.

4. Other precautions

Electrostatic treatment: BOPP film is easy to generate static electricity on the high-speed production line, so appropriate electrostatic elimination measures need to be taken to avoid the impact of static electricity on the printing process.

Quality inspection: Strengthen the quality inspection in the printing process, timely find and solve printing problems, to ensure that the quality of printed products meet customer requirements.

To sum up, when printing BOPP synthetic paper, it is necessary to pay attention to ink selection, printing process, equipment and environmental control and other related matters. Through the fine printing process and strict quality control measures, the printing effect and quality of BOPP synthetic paper can be ensured to reach the best state.