From the research found that the speed of the screw can affect the properties of the cushioning foam Pellet. When the speed of the screw that is the size of the cell, the greater the density, the rate of inflation, the index values water absorption, resistance, pressure is likely to decrease. Water solubility index section is likely to increase. In addition, moisture affects the properties of shock-resistant foam Pellet as well. The humidity than the size of the cells, the rate of inflation, the index values water absorption, resistance, pressure water solubility index tends to decrease. Section density tends to increase.
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