There are many common types of self sealing pockets. What are the factors that affect the shortening rate of self sealing pockets? Now Jinan Self sealing Pocket Factory will explain relevant information for you.
1. Self structure
In the same self sealing bag, the shortening rate of the part with smaller wall thickness is smaller than that of the part with larger wall thickness, the shortening rate of the part far from the insert is greater than that of the part close to the insert, and the shortening rate perpendicular to the moving direction is also different from that of the moving direction. Generally, the shortening rate of the moving direction is greater than that perpendicular to the moving direction, and the shortening rate of the self sealing bag in the obstructed direction is smaller than that in the non obstructed direction.
2. Raw materials
The shortening rate of the self sealed bags produced with different raw materials is different, but the shortening rate of the self sealed bags produced with the same materials in different batches is also different, which is mainly affected by the processing and production process. The shortening rate of crystalline plastic is greater than that of amorphous plastic. The molding shortening rate of plastic with poor mobility is large, and the molding shortening rate of plastic with good mobility is small, It is assumed that the filling material in the plastic will lead to a significant decrease in the plastic shortening rate, and the plastic without filling material will have a better shortening rate after production and molding.
3. Pressure and temperature
If the pressure is too high, the sealing of the self sealing bag will be added, leading to a reduction in the shortening rate. Suppose that the increase in the temperature of the raw materials used to produce the self sealing bag will cause the volume of the self sealing bag to swell, and the materials used to press into the mold will become less, leading to an increase in the shortening rate. However, if the temperature of the raw materials rises, the viscosity will become smaller, leading to an increase in the pressure in the mold cavity, leading to a decrease in the shortening rate of the self sealing bag, Therefore, the factors that affect the shortening rate of self sealing bags ultimately depend on the general effects of pressure and raw material temperature.
We will learn from the above three points about several factors that affect the shortening rate of self sealing pockets. Of course, you should try to learn more before and after use to achieve better use effect. Pay attention to us http://bjmj111.com Learn more!