Glass is a very common material in daily life. It has chemical inertness and stable properties. In addition to being used as a building material, glass can also be used as a touch screen, tempered film, etc. after coating and laminating processes. The wetting performance of glass itself is relatively weak, and the coating and film coating need relatively strong wetting performance, so the cleaning before coating and film coating has become an indispensable process link.

Plasma cleaning is a dry cleaning method. When the glass substrate is in the plasma, the surface is bombarded by the charged particles (electrons) in the plasma. The surface is cleaned and activated, the surface energy is increased, and the film atoms or molecules can better wet the substrate when deposited, increasing the van der Waals force. Secondly, the surface of the glass substrate is impacted by charged particles (electricity), and from a microscopic point of view, many pits and pores will be formed on the surface of the substrate. Mechanical locking force. In addition, the roughening of the substrate surface increases the actual surface area, which is beneficial to increase van der Waals forces, diffusion adhesion, and electrostatic forces, thus increasing the overall adhesion. After the glass material is processed by the plasma cleaning machine, the glass material can immediately enter the next processing process. Therefore, the glass plasma cleaning machine is a stable and efficient process.

一、Inspection before plasma treatment

Glass sample step surface (before cleaning) contact angle test report
Test samples	Glass samples
testing time	2020.7.22	test temperature	25℃
test liquid	pure water	droplet volume	1 microliter
number of tests	5	Testers
test instrument	SDC-200S

① Contact angle data of glass samples with lettering before cleaning

② Contact angle data before cleaning of glass samples without characters

二、Data after plasma processing

Experimental parameters of vacuum plasma cleaner
Handling products	Glass samples
Plasma equipment	SPV-100/300W power
Plasma treatment time	180m
Cleaning result	With word (unit: degree)	25-29	Without word (unit: degree)	25-36
reactive gas	Argon 100sccm

Glass sample step surface (after cleaning) contact angle test report

① Contact angle data of glass samples with lettering after cleaning

② Contact angle data of glass samples without words before cleaning