Silicone sealant is one of the widely used sealants in the current market. It is usually made into a viscous ointment and stored in a sealed container. When used, it is extruded from the container and applied to the area that needs to be sealed. Once it comes into contact with moisture in the air, it will solidify into a tough rubber like elastic body, thus playing a sealing role. Some varieties, due to their excellent adhesion to materials such as glass and aluminum, can also be used for adhesive assembly of glass and other materials. Regardless of the type of product, it can be divided into two categories based on product packaging: single component and two-component. The market application is mainly based on single component separation, which can be divided into two types: hard packaging (hard plastic tubes, aluminum tubes) and soft packaging (soft tin foil film).

When using single component silicone sealant, cut open the pipe opening, install the pointed tube, and then use a glue gun to remove it from the bottle for coating. Occasionally, users in the market may report that the adhesive is thin, and after cutting open the pipe or using a glue gun to apply glue, the adhesive will automatically flow out. In response to this situation, we have conducted a thorough analysis of the process of gluing and the process of using a glue gun to apply glue, and have preliminarily drawn the following conclusions for users' reference:

Firstly, as soon as the opening of the pipe mouth is cut, the adhesive will automatically flow out. The reason is that during the filling process, the sealing of the tail is quickly flushed into the pipe using a punch rod. If the pressure of the punch rod is adjusted too much, it will cause some pressure to form inside the pipe. When the opening of the pipe mouth is cut, the adhesive will flow out under pressure, but the pressure will not be too high. It will stop flowing out two or three millimeters and will not affect the construction.

Secondly, if the glue still flows out automatically after using a glue gun to apply the glue, it is related to the construction. Usually, manual glue guns are used by personnel to manually apply pressure to the glue gun, and the "active shaft" pushes forward to squeeze out the glue. During the glue spraying process, the bottle body will expand to a certain extent due to the pressure (if the product packaging plastic bottle used by the user is a thin bottle, the expansion phenomenon will be more serious). When the user stops applying pressure to the glue gun, the glue bottle will recover from its original expansion and contraction. In addition, the inertia of the "active shaft" of the glue gun and the forward thrust will cause the glue nozzle to continue to flow out even if the glue gun stops applying pressure, which will cause inconvenience to the construction worker and even affect the construction quality. So when using it, there should be an advance amount when stopping the glue application due to construction needs. That is, when the glue application is about to end, the manual pressure should be reduced in advance. When it is completed, quickly press the iron plate on the spring part of the glue gun with your hand. This can reduce the inertia of the "active shaft" moving forward to zero, and the pressure of the expansion and contraction of the glue bottle will also be correspondingly reduced, which will cause the bottom cover to slightly retreat backwards, greatly reducing the chance of glue leakage.