Complaint
PVC Fitting compound also known as a dry blend are based on the combination of the PVC and additives that give the formulation necessary for the end-use application. The convention in recording the additive concentration is based on parts per hundred of the PVC resin (phr). The compound is generated by intimately mixing together the ingredients, which is subsequently converted into the gelled article under the influence of heat (and shear). Depending on the type of PVC and additives, the compound prior to gelation, can be a free-flowing powder/dry blend or a liquid in the form of a paste or solution. PVC compounds can be formulated for flexible materials using plasticisers, called PVC Plasticized Compounds and for rigid application without plasticizer called UPVC compound.
