US 10,537,841 B2 · Particle filter as well as method for the manufacture thereof

Abstract

A method for manufacturing a filter (1) for gas masks includes providing a flat paper and folding the paper into a pleated preform. The filter element (2) is separated from the pleated preform (6) and is inserted into a housing (3). The inserted filter element (2) is connected to the housing (3) at least at some points. This filter elements (2) may have a polygonal outer contour, upon separating the element from the pleated filter preform (6). A foam and/or an adhesive is applied to an outer edge of the filter element (2), arranged on the circumference of the filter element, for an at least partial sealing of an edge (5). This establishes a connection to the housing (3) in at least some sections.

Claims14

Dependent claims

A method for manufacturing a filter for gas masks, the method comprising the steps of:

providing a flat paper material;
folding the flat paper material to form a pleated preform;
separating the pleated preform into at least one filter element;
providing a housing;
inserting the filter element into the housing;
and
establishing a connection between the inserted filter element and the housing at least at some points, by applying a foam or an adhesive or both a foam and an adhesive to an outer edge of the filter element, which outer edge is arranged on a circumference of the filter element, for the at least partial circumferential sealing of the edge, which sealing establishes the connection of the filter element to the housing in at least some sections;
wherein the steps of establishing the connection of the filter element to the housing with the circumferential sealing of the edge are carried out in one working step.

5 more elements

Dependencies are inferred from the claim text.

Particle filter as well as method for the manufacture thereof

Life of this patent

Particle filter as well as method for the manufacture thereof

Life of this patent

Abstract

Claims14