| 摘要 |
<p>In a method for regulating the foam density in products foamed from liquid and a gas additive the density of the foam and the excess pressure are simultaneously measured in the conveyor line of the foam, correlated in an evaluation circuit and the free foam density, that is, the density of the released foam under atmospheric pressure, is calculated therefrom. This calculated value is compared with a set value of the free foam density and in the case of deviations the ratio of the amounts of liquid and gas conveyed is varied. This method makes it possible for the relative fluctuation in density of the released foam to be reduced to values on the order of 1%.</p> |
