Document Type and Number:
Japanese Patent JPS5549885
Kind Code:
B2
Abstract:
PURPOSE:To provide a compositte permeable membrane of great mechanical strength, of excellent stability and reliability, by making a number of holes in a sheet base-material after it is coated with polymer adhesive, then by joining the base material with a permeable membrane on its surface. CONSTITUTION:Into a tubular permeable membrane 1 previously manufactured is inserted a suitable supporting pipe 5, then a sheet base-material 2, which has been coated with polymer adhesive and in which many holes have been made, is wound around the membrane 1. The base material 2 wound around the membrane 1 is pressed and/or heated in order to join the base material 2 with the membrane 1, thus manufacturing tubular composite permeable membrane. As the membrane 1 is used, e.g., acetyl cellulose, as the base material, e.g., PE film, and as the polymer adhesive, e.g., a copolymer emulsion type adhesive consisting of metacrylic acid, acrylic acid, and butyl acrylate.
Application Number:
JP13014577A
Publication Date:
December 15, 1980
Filing Date:
October 28, 1977
Export Citation:
International Classes:
B01D61/18; B01D61/08; B01D69/10; B01D69/12