Abstract: The present invention relates to a filter module comprising a body of wound layers of sheet material, with an inner and outer peripheral surface, a winding axis and a passage within the body, the sheet material having a plurality of openings forming at least two types of channels within the wound layers, the channels extending in a direction from the inner peripheral surface to the outer peripheral surface, a first type of channels in fluid communication with the outer periphery and closed at the end toward the inner periphery, a second type of channels in fluid communication with the inner periphery and closed at the end toward the outer periphery, the two types of channels separated by portions of sheet material, one of the types of channels being outlet channels and being covered by a filter material.

Abstract: The present invention relates to a filter module comprising a body of wound layers of a sheet material, said body having an inner and an outer peripheral surface delimiting the body with respect to an inner and an outer periphery, respectively, a first and a second end face, a winding axis and a passage extending along the winding axis of said body and in fluid communication with said inner peripheral surface, said sheet material having a plurality of openings formed therein, said openings forming at least two types of channels within the wound layers of sheet material of said body, said channels extending in a direction from the inner peripheral surface to the outer peripheral surface, a first type of channels being in fluid communication with the outer periphery at one end and closed at the other end located towards said inner peripheral surface, a second type of channels being in fluid communication with said inner periphery and said passage at one end and closed at the other end located towards said outer