How to reduce VOCs emissions in the printing process of self-adhesive label paper

The measures to reduce VOCs (volatile organic compounds) emissions in the printing process mainly include three aspects: source control, process management and end management. Here's how:

First, source control

Using raw and auxiliary materials with low or no VOCs:

Choose environmentally friendly inks: such as water-based inks, UV curable inks, etc., which have lower VOCs emissions than traditional solvent-based inks.

Use environmentally friendly adhesives: Choose adhesives with low VOCs content to reduce VOCs emissions during the coating process.

Cleaning solvent optimization: Use cleaning agents with low VOCs content or, where possible, use water-based cleaning instead of solvent cleaning.

2. Process management

Optimized drying process:

Promote the optimization control system of drying equipment, and reduce the VOCs emission in the drying process by optimizing the process structure, real-time temperature control, hot air recycling, and introducing inert gas.

Using UV curing technology: UV curing inks do not need heating during the curing process, and curing speed can significantly reduce VOCs emissions.

Process standardization:

Carry out regular maintenance and maintenance of the printing equipment to ensure that the equipment is in good condition and reduce VOCs leakage caused by equipment failure.

Strengthen the training and management of operators, ensure that the printing process is carried out in strict accordance with the specifications, and reduce VOCs emissions caused by improper operation.

Third, end treatment

Install VOCs processing equipment:

Install VOCs treatment equipment at the end of the printing production line, such as activated carbon adsorption device, catalytic combustion device, UV photolysis purification device, etc., to purify the exhaust gas.

These devices can effectively adsorb or decompose VOCs in exhaust gas, converting them into harmless substances and then releasing them into the atmosphere.

Recycling VOCs:

For high-concentration VOCs waste gas, condensation recovery, adsorption recovery and other methods can be considered for recycling, which both reduces emissions and saves resources.

4. Other measures

Strengthen environmental management:

Establish a sound environmental management system, and regularly monitor and record VOCs emissions in the printing process to ensure that emissions meet the relevant national or local standards.

Develop emergency plans to deal with possible emergencies such as VOCs leakage and reduce the impact on the environment.

Promote cleaner production:

By improving the production process, the use of advanced technology and other means, from the source to reduce the production and emissions of VOCs, to achieve cleaner production.

To sum up, reducing VOCs emissions in the printing process of self-adhesive label paper needs to start from multiple aspects such as source control, process management and end management, and take comprehensive measures to reduce VOCs emissions and environmental impact. At the same time, enterprises should also strengthen environmental management, promote the concept of cleaner production, and contribute to sustainable development.