How to optimize the hot stamping process of BOPP synthetic paper?

Optimizing the hot stamping process of BOPP synthetic paper can be started from the following aspects to ensure the best hot stamping effect, while improving production efficiency and product quality:

First, preparation before hot stamping

1. Selection and inspection of electrochemical aluminum

Selection: According to the characteristics of BOPP synthetic paper and hot stamping effect requirements, choose the appropriate electrochemical aluminum material. Pay attention to whether the model, color, gloss, etc. of the electrolytic aluminum match the product requirements.

Inspection: Check the quality of the electrolytic aluminum, including whether the surface has scratches, sand holes, wrinkles and other defects, and whether the brightness meets the requirements.

2. Preparation of hot plate

Choose the appropriate hot plate material, such as copper plate, zinc plate, etc., the priority is to choose strong heat resistance, good elasticity copper plate.

Check whether the hot plate layout has burrs, uneven, unclear graphics and other problems, and carry out the necessary trimming.

3. Check and adjust the hot stamping machine

Ensure that the hot stamping machine is in normal operation and all parts are not damaged or loose.

Adjust the temperature, pressure and speed of the stamping machine according to the stamping requirements.

Second, optimization of hot stamping process parameters

1. Temperature control

The hot stamping temperature should be determined according to the material and thickness of the BOPP synthetic paper and the characteristics of the electrochemical aluminum. The temperature is too high or too low will affect the hot stamping effect, so precise control is required.

In general, the hot stamping temperature is set in an appropriate range to ensure that the electrochemical aluminum can be well attached to the BOPP synthetic paper, while avoiding problems such as paste plate and unclear graphics during the hot stamping process.

2. Pressure adjustment

The size of hot stamping pressure directly affects the adhesion firmness of electrochemical aluminum and BOPP synthetic paper. Too much pressure will result in deformed or pasted images, and too little pressure may not be hot.

According to the requirements of hot stamping area and graphic details, adjust the pressure setting of the hot stamping machine to ensure that the hot stamping effect is clear and firm.

3. Time control

Stamping time is also an important process parameter. Too long or too short time may affect the hot stamping effect.

In practice, the stamping time is usually controlled as a constant, and the stamping effect is optimized by adjusting the temperature and pressure.

Third, precautions in the process of hot stamping

1. Avoid prolonged downtime

Long downtime should be avoided as far as possible during the hot stamping process to prevent the hot stamping foil from being heated and coking or the plate temperature dropping, resulting in poor hot stamping effect.

2. Handle hot stamping faults in a timely manner

In the process of hot printing, if you encounter problems such as hot printing, false graphics, dizziness, etc., you should stop in time to check and adjust the process parameters or replace the hot printing material.

3. Keep the hot stamping environment stable

Ensure the environment of the hot stamping workshop is stable, and avoid the adverse impact of environmental factors such as temperature and humidity on the hot stamping effect.

Fourth, inspection and finished product protection after hot stamping

1. Quality inspection

Quality inspection of the finished product after hot stamping to ensure that the hot stamping effect meets the product requirements. Check whether the text is clear, firm, there is no paste, incomplete and other problems.

2. Finished product protection

The finished product after hot stamping should be protected in time, such as film coating, glazing, etc., to improve its wear resistance, water resistance and other properties.

Fifth, continuous improvement and innovation

1. Process improvement

Evaluate and improve the hot stamping process regularly, and improve the efficiency and quality of hot stamping by introducing new technologies and new equipment.

2. Technological innovation

Pay attention to the latest technology and development trend in hot stamping field, and actively explore the new hot stamping process and new method suitable for BOPP synthetic paper.

To sum up, the optimization of the hot stamping process of BOPP synthetic paper needs to start from many aspects, including the preparation before hot stamping, the optimization of hot stamping process parameters, the precautions in the hot stamping process, the inspection and protection of the finished product after hot stamping, and continuous improvement and innovation. Through the implementation of these measures, we can ensure that the hot stamping effect reaches the best state, improve production efficiency and product quality.