FILTER UNIT WITH A RIGID FILTER AND A FLEXIBLE COVER AND METHOD FOR MANUFACTURING SUCH A FILTER

The invention relates to a filter unit (100) and a method for manufacturing such filter unit (100). The filter unit is configured to filter a gas and/or particles out of a gas mixture, especially out of breathing air. A shell surface (M) of a rigid filter (1), for example, including activated carbon, is enclosed by a flexible jacket (3). The jacket (3) is enclosed with a rigid cover (2, 5) at the outflow-side end. The first manufacturing method includes inserting the filter (1) into a shaping body, so that a gap remains between the inner wall of the shaping body and the shell surface (M) of the filter (1). Free-flowing material is inserted into this gap, and this material forms the jacket (3) after a curing. A second manufacturing method includes cutting a piece off from a tube and pulling over the shell surface (M) of the filter (1). The piece of tube then forms the jacket (3) of the filter (1). 本发明涉及一种过滤单元（100）以及两种用于制造这种过滤单元（100）的方法，其中所述过滤单元能够从气体混合物、尤其从呼吸空气中滤出气体和/或颗粒。例如由活性炭构成的刚性过滤器（1）的罩面（M）被柔性的包套（3）包围。在流出侧的