PVC Compounds

PVC Compounds

PVC COMPOUNDS:

PVC compounds are based on the combination of the polymer and additives that give the formulation
necessary for the end-user. 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 (known as a dry blend) or a liquid in the form of a paste or solution.

PVC compounds can be formulated, using plasticizers, into flexible materials, usually called PVC-P.
Compounds without plasticizer for rigid applications are designated PVC-U