Patent ID: 6536323
Filing Date: 2003-03-25
Classification: B01J,B21F,D04C

Abstract:
A method for manufacturing a packing made of a three-dimensional net-like structure which constitutes an internal structure of a device which performs material transfer, heat exchange or mixing between gases, liquids or gas and liquid, said internal structure being divided in a plurality of chambers or channels connected to one another and said three dimensional net like structure being made of a plurality of unit structures which are arranged continuously in vertical and horizontal directions of the three-dimensional net-like structure, each of the unit structures being a combination of two quadruple pyramids having a common apex (41a) and having bottom surfaces disposed in opposite directions, said method comprising a step of forming the apex (41a) and four sides (41b) of the two quadruple pyramids by converging and diversion of four line elements (23) about a knot which is formed by twisting the four line elements (23).