scope:

Specifies two methods A and B for the preparation of pastes (also known as plastisols) from appropriate PVC resins, plasticisers and other ingredients using a planetary mixing process. Both Method A and Method B can be used to prepare pastes of all compositions. Method A (single speed) is particularly applicable to resins prone to heat build-up during paste preparation, while Method B (two speed) might be preferred for repetitive work, e.g. for process control during resin manufacture, because of its shorter mixing time. Such pasted may be used for a variety of testing purposes, including the determination of rheological properties for resin designation and specification.