The necessity of plastic shell spraying is mainly reflected in the following aspects:
1. Aesthetics: Plastic shell spraying can provide a variety of colors and textures, enhance the attractiveness of the product's appearance, and meet consumers' demand for product aesthetics.
2. * * Protective Function * *: By spraying, a protective film can be formed on the surface of the plastic shell, which can prevent the plastic shell from being corroded by light, rain, dew, water and other media, and extend the service life of the product.
3. * * Special Functions * *: Spraying can also endow plastic shells with some special functions, such as fire prevention, waterproofing, stain prevention, temperature indication, insulation, invisibility, conductivity, insecticide, sterilization, luminescence, and reflection.
4. Insulation performance: In some specific applications, such as insulation powder spraying for new energy power batteries, the insulation performance of the battery can be improved, preventing adverse contact between the battery and the external environment, thereby enhancing safety.
5. EMC shielding technology: In electronic devices, spraying conductive materials on plastic shells can provide electromagnetic compatibility (EMC) shielding, reduce electromagnetic interference, and ensure the normal operation of the equipment.
6. Solution to adhesion problem: For non-polar plastic shells, surface activation treatment and spraying can solve the adhesion problem between paint and plastic shells, ensuring the firmness and durability of the sprayed layer.
In summary, plastic shell spraying can not only enhance the appearance and additional functions of products, but also provide necessary protection and performance improvement in specific applications, making it an important surface treatment technology.