INFLUENCE of RHEOLOGICAL PROPERTIES of FLUID and SEMISOLID FOODS ON the PERFORMANCE of A FILLER

For low‐viscosity foods, in a piston filler (FMC PN010), power‐law relationships were found between the number of cycles/minute at which splashing occurred on the rim of a container versus viscosities of the test fluids. Splashing was due to either the breakup of a discharge jet in the nozzle or overflow of discharge fluid over the rim of a container. the formation of droplets due to breakup of discharge jets was confirmed by solution of the flow equations on a Cray‐2 super computer. With foods containing particulates in a low‐viscosity liquid, splashing occurred when the food hit the bottom of the container and again when the plunger hit the top of the heaped food. With foods having high magnitudes of yield stresses, the plug formed in the discharge nozzle of the filler contributed to heaping of the foods.