(1) Natural essential oil components and special invisible membrane-forming technique join together. It has a good property and an elegant package.

(2) Therefore, some membrane-forming technologies have been developed to prepare the electrolyte membranes, for example, electrochemical vapor deposition (EVD), plasma spraying, sol-gel etc.

(3) This paper reviews the recent progress of membrane materials and membrane-forming technologies in the pervaporation separation of organic solvent mixtures in the world.

(4) Methods: 1. Electrostatic droplet technique was adopted to fabricate ACA microcapsules with chitosan of different molecular weights and in different membrane-forming time.

(5) It is manufactured from HCPE and chorined wax as the major membrane-forming material added with corrosion-resistant color material.