With the continuous development of the smart watch industry, people's requirements for watches are getting higher and higher, and smart watches have become an indispensable partner in people's lives. However, in the process of packaging smart watches, there is a problem of difficult bonding between the bottom shell and the touch screen, and in order to solve this problem, the plasma cleaning machine has become a powerful tool for surface activation of smart watches.
As an emerging cleaning technology, plasma cleaning technology uses plasma to achieve results that cannot be achieved by conventional cleaning methods. Plasma is a state of matter, also known as the fourth state of matter, and does not belong to the common solid-liquid-gas three states. Applying enough energy to the gas to ionize it becomes a plasma state. The "active" components of plasma include: ions, electrons, atoms, active groups, excited nuclides (metastable), photons, etc. The plasma cleaning machine is to use the properties of these active components to treat the surface of the sample, so as to achieve the purpose of cleaning, coating and so on. 
Before using the plasma cleaning machine, use the No. 40 dyne pen to draw lines on the surface of the bottom shell, and now the effect is shrunk into water droplets. Modified by plasma activation, and a continuous line was drawn with a No. 56 dyne pen after treatment, which proved that the wetting performance of the surface of the bottom shell of the smart watch was improved, and the bonding quality was improved, which could effectively solve the problem of difficult bonding between the bottom shell and the touch screen.