Melt state to be used only for amorphous polymers that are rubbery at ambient temperature (e.g., most elastomers, flexible PVC, etc.) and are set as “Melt Only” materials; the softening point should be set at a temperature below the minimum acceptable feed temperature (usually ambient temperature). Otherwise, WinTXS will not allow the performance of “melt-fed” simulations with realistic operating conditions. Temperature dependencies of density are not provided.