PVC Emulsion is a light sensitive chemical that allows you to make a permanent stencil of your design. The general idea is that you make your design image on transparency film with an opaque substance then be able to mass-produce. PVC Emulsion is highly resistant to PVC inks/Solvent based inks. Before use, sensitizer must be added and allowed to activate emulsion. Once the sensitizer has been mixed it is ready for use.