Vacuum system is used in UV glue bubbles and syneresis
UV glue bubble and dehydration shrinkage often affect the product performance. In the actual production and use of UV glue, some thicker UVs (viscosity more than 20000 CP) sometimes appear dehydration shrinkage. The structure of the gel continues to form and develop after the dehydration of macromolecule solution or sol gel. As time goes on, colloidal part 
icles or macromolecules will be further closer and directed more completely, so that the skeleton of the gel will shrink, and some of the liquid will be separated from the gel, which is called dehydration or desiccation. The vacuum system is used to solve the bubble and dehydration shrinkage phenomenon in the process of Uvglue defoaming.
Defoaming is a process in the production of solution spinning. The purpose is to remove the bubbles in the spinning solution before spinning, so as to ensure that the subsequent spinning process can be carried out normally.
Vacuum system has the following advantages:
1. Reduce the noise in the factory
2. Avoid wasting power
3. Mobile system, flexible installation, less space occupation
4. Fully automatic control, plus a certain margin, to reduce the impact of equipment shutdown on production
5. Convenient operation, high stability and reliability.
Because it has so many advantages, it is widely used in various industries, such as electronic industry, glass processing, CNC engraving, mechanical manufacturing, optical disc industry, semiconductor industry, vacuum defoaming, vacuum fixation, vacuum fixture, vacuum adsorption, etc.
How to use vacuum system to solve the problem of defoaming and dehydration?
The three main factors of defoaming, time, temperature and pressure.
Temperature heating: 1. Increase the viscosity of the glue; 2. Accelerate the fluidity of the glue; 3. Increase the moisture content
Pressure and pressure: 1. Accelerate the flow of glue; 2. Increase moisture content; 3. Apply pressure to remove bubbles
Time: 1. Keep the glue flowing; 2. Remove bubbles by catalytic dissolution
Using the external pressure becomes smaller, the volume of the bubble becomes larger, floating up to the surface and breaking.
The vacuum system can solve the problems that can not be solved by the traditional mixing equipment. The slurry and powder of different components can be fully mixed evenly without stratification and bubble. The high efficiency of the system is that the processing time is 3 minutes at a time. Meet the requirements of mixing process to high quality.
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