MUMBAI, India, June 26 -- Intellectual Property India has published a patent application (202514114602 A) filed by Nitto Denko Corporation on November 20, 2025, for Spiral Membrane Element.
Inventors include Yasuhiro Uda; Shinichi Chikura; Maya Kihara; and Seigo Ogawa -.
The application for the patent was published on June 19, 2026, under issue no. 25/2026.
Abstract: According to the present invention, there is provided a spiral membrane element in which the durability of a bonding part between a membrane leaf and a central pipe is improved, and the central pipe is more easily separated and collected at the time of recycling. The spiral membrane element of the present invention includes: a plurality of membrane leaves each having a permeation-side flow-channel between separation membranes facing each other; and a perforated central pipe around which the membrane leaves are wound with a supply-side flow-channel interposed between the membrane leaves. The spiral membrane element includes a bonding part in which each of both-side ends in an axial direction among inner peripheral-side ends of the membrane leaves is bonded to the central pipe, and the central pipe includes a tapered part having a peripheral surface whose diameter expands toward a center side in the axial direction in at least a partial area of the bonding part.
Disclaimer: Curated by HT Syndication.
