Wet-process substrate non-woven fabric used for reverse osmosis membrane and preparation method thereof

The invention discloses wet-process substrate non-woven fabric used for a reverse osmosis membrane and a preparation method thereof. The manufactured substrate non-woven fabric is formed by integrating three layers of fibers through hot-melting rolling compaction, wherein the upper layer comprises ES composite fibers, the lower layer comprises COPET/PET dacron composite fibers, and the intermediate layer comprises synthetic fibers composed of PET fibers, ES fibers and COPET/PET composite fibers. The fabric is mainly characterized in that the entire fabric is of a single-layer structure. The preparation method of the fabric comprises the steps of hydrophilic treatment of the fibers serving as raw materials, processing and netting, drying treatment, first hot melting rolling compaction, cooling shrinkage treatment, second hot melting rolling compaction and quality inspection and rolling-up, and the preparation method is mainly characterized in that the seven steps are conducted in a continuous and synchronized mode. The wet-process substrate non-woven fabric used for the reverse osmosis membrane and the preparation method thereof have the advantages that the manufactured product quality is good, the preparation method and process are advanced and reasonable, energy is saved, consumption is reduced, and the process cost is low.