Gas Solubility model for microcellular injection molding
The solubility of gas into the polymer melt can affect both the viscosity of the melt and the bubble size in the finished product.
The gas solubility model is given by the following equation: 
where:
is the solubility coefficient
is the temperature- and
and 
are data-fitted coefficients
If the value of is zero, then the solubility coefficient will be constant at .