Low-Temperature Atmospheric Plasma Cleaning Machine Atmospheric Plasma Cleaner Low-temp Plasma Cleaning Equipment

Principle of Low-Temperature Atmospheric Plasma Surface Treatment Technology

The energy of particles in low-temperature plasma is generally several to tens of electron volts, which is greater than the bond energy of polymer materials (several to tens of electron volts), and can completely break the chemical bonds of organic macromolecules to form new bonds; however, it is far lower than high-energy radioactive rays, only affecting the material surface and not affecting the performance of the substrate. In the non-thermodynamic equilibrium state of low-temperature plasma, electrons have high energy, which can break the chemical bonds of molecules on the material surface and increase the chemical reactivity of particles (greater than thermal plasma), while the temperature of neutral particles is close to room temperature. These advantages provide suitable conditions for surface modification of heat-sensitive polymer materials. Through low-temperature plasma surface treatment, various physical and chemical changes occur on the material surface, resulting in etching and roughening, or the formation of a dense cross-linked layer, or the introduction of oxygen-containing polar groups, thereby improving hydrophilicity, adhesion, dyeability, biocompatibility, and electrical properties. Under suitable process conditions, the surface morphology of the material undergoes significant changes, introducing various oxygen-containing groups, transforming the surface from non-polar and difficult to bond to a certain degree of polarity, easy to bond, and hydrophilic, which is beneficial for bonding, coating, and printing. Applying high-frequency AC high voltage to both ends of the electrodes causes gas glow discharge in the air between the two electrodes, forming a plasma region. During their movement, electrons continuously collide with gas molecules, generating a large number of new electrons. When these electrons reach the anode, they accumulate on the dielectric surface, thus achieving surface modification.

Principle of Atmospheric Plasma Generation:

Matter generally exists in three states with changes in temperature: solid, liquid, and gas. When energy is further added to the gaseous substance, the gaseous substance undergoes a chemical reaction, forming a mixed state of electrons, ions, and high-energy particles. This state is called the plasma state.

Application Areas

1. Optoelectronics and Electronics Industry Applications

Cleaning of various glass surfaces, improving glass surface hydrophilicity, optimizing glass coating, printing, bonding, and spraying processes;

Cleaning of flexible and non-flexible printed circuit board contacts, LED fluorescent lamp "contact" cleaning, and improving the firmness of surface dispensing;

Cleaning of electronic components, PCBs, ICs, etc., surface cleaning and activation to enhance bonding;

Plasma cleaning before LCD terminal bonding;

2. Automotive Industry Applications

Pre-treatment of automotive EPDM sealing strips, flocking and coating, replacing the use of primers;

Plasma pre-treatment before bonding and spraying of automotive lamp bases, grooves, brake pads, bumpers, etc.;

Pre-treatment before applying sealant to puncture-proof tires;

Surface activation and cleaning before welding and encapsulation of lithium battery electrodes for new energy vehicles;

3. Applications in the Plastics Industry:

Pre-treatment for spraying, printing, electroplating, bonding, and flocking of various plastic materials such as PP, PVC, PET, PC, PE, and PTFE.

Surface modification and removal of surface contaminants before spraying, printing, electroplating, and bonding of various plastics, silicone, rubber, and metal materials;

Pre-treatment of plastic casings for mobile phones, computers, toys, etc., before printing and painting to improve surface adhesion;

Pre-treatment of plastic cosmetic bottles before printing to improve surface adhesion and prevent text from peeling off, thus improving product quality;

4. Applications in the Packaging Industry:

Professionally improves the firmness of box gluing for laminated paper, coated paper, polished paper, gold and silver cardboard, aluminized paper, UV, OPP, PP, PET, and other color boxes and cartons;

Plasma pre-treatment before welding of milk powder cans, beverage cans, etc.;

5. Applications in the Printing and Coding Industry:

Plasma pre-treatment of plastic, metal, glass, and other composite materials before pad printing, screen printing, and coding to improve the adhesion of ink to the material surface;

Pre-treatment of PE, PTFE, and silicone rubber wires and cables before coding;

Pre-treatment of PVC, PET, and ABS smart cards before coding;

6. Applications in the Home Appliance Industry:

Plasma activation before surface coating, spraying, and bonding of daily necessities and home appliances to improve surface adhesion and bonding strength.

ILow-Temperature Atmospheric Plasma Cleaning Machine Atmospheric Plasma Cleaner Low-temp Plasma Cleaning Equipment