Over deze norm
NEN-EN-ISO 4612 specifies two methods, A and B, for the preparation of pastes (also known as plastisols) from appropriate PVC resins, plasticizers and other ingredients using a planetary mixing process. Both method A and method B can be used to prepare pastes of any composition. 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 pastes can be used for a variety of test purposes, including the determination of rheological properties for resin designation and specification.
|Nederlandse titel||Kunststoffen - Bereiding van PVC-pasta's voor beproevingsdoeleinden - Methode met planetaire menger|
|Engelse titel||Plastics - Preparation of PVC pastes for test purposes - Planetary-mixer method|