What is the effect of plasma cleaning machine treatment on PVC sealing strip before bonding!

Low temperature plasma surface treatment machine mainly relies on the activation of active particles in the plasma to remove dirt from the surface of objects. The plasma excites inorganic gases, and gas-phase substances adhere to solid surfaces; The reaction between attached groups and solid surface molecules produces product molecules, which are analyzed to form a gas phase. The reaction residues are separated from the surface.

What should be done if the adhesive performance of ink is poor? Plasma surface cleaning treatment is needed to meet the surface adhesion. Plasma is a substance state composed of a large number of positively and negatively charged particles and neutral particles (atoms and molecules), such as ions and electrons, which exhibit collective behavior under high temperature or specific excitation. It is the fourth substance besides solids, liquids, and gases.

For example, the surface properties of PVC edge banding directly affect the peel strength between PVC and the board, the adhesion of water-based ink, and other properties, thereby affecting the quality stability of the product. The surface of PVC can be treated with a plasma surface processor to improve its surface hydrophilicity, thereby enhancing the surface tension, peel strength, and adhesion of water-based ink of PVC edge banding.

Due to the low surface ability and weak polarity of PVC plastic, it is difficult for ordinary adhesives to form good adhesion on its surface, resulting in low bonding strength and easy detachment during use. In applications such as PVC pipe connection and PVC plastic composite with other materials, the surface of PVC plastic can be significantly improved by treating and activating it with an ion cleaning machine. When PVC plastic is bonded to metal materials after plasma treatment, the bonding strength can be increased several times or even higher.

After adopting plasma cleaning technology, the bonding between PVC plastic and metal frames in automotive interior parts can greatly improve the reliability and durability of the product. The influence of process parameters on the bonding performance of PVC plastic varies depending on the processing time, power, gas type, and other process parameters of plasma cleaning equipment. For example, oxygen plasma mainly introduces polar groups containing oxygen, while nitrogen plasma can introduce polar groups containing ammonia. The appropriate gas type and process parameters should be selected according to the type of adhesive and actual needs.

The application characteristics of plasma cleaning machine in the field of PVC pipes include the following aspects:

1. The grease, dust, and oxides on the surface of PVC can decompose the active ingredients in the plasma, with a removal depth of up to the nanometer level, providing a cleaning foundation for subsequent processing and improving the surface cleaning effect!

2. The bombardment of high-energy particles can form micrometer level rough structures on the surface of PVC, increase surface area, and improve surface adhesion.

3. Plasma introduces polar groups such as hydroxyl and carboxyl groups onto the surface of PVC, transforming hydrophobic PVC into hydrophilic ones and significantly improving the surface.

4. After plasma treatment, the surface roughness of PVC increases and the contact area with the adhesive increases. At the same time, the introduction of polar groups on the surface and adhesive molecules can form stronger chemical bonds or physical adsorption, greatly improving the bonding performance of PVC materials, and significantly enhancing the bonding performance.

5. Plasma cleaning treatment can make the surface of PVC rough and polar, improving the wettability and adsorption of ink on the surface. Ink can better spread on the surface of PVC, forming a stronger bonding force with the surface, thereby making the printed patterns clearer and more firm, and the colors more vivid and lasting.

6. Through physical etching and chemical modification, plasma cleaning machines can provide good adhesion for coatings, while also removing impurities such as oil stains and release agents on PVC surfaces, further improving the adhesion and coating quality of coatings.

7. The surface of PVC can generate functional groups such as hydrocarbons, oxides, and hydroxyl groups, which can effectively improve the material's oxidation resistance and wear resistance.

In summary, PVC surface treated by plasma cleaning machine generally only acts on the surface of the material, does not affect the properties of the substrate, and is easy to operate, fast to treat, effective, energy-saving and environmentally friendly.