Filter cartridge with centerboard, dust collectors, and methods

A dust collector comprising:

• (a) a housing having a dirty air inlet, a clean air outlet, a tubesheet, and a frame arrangement;
• (i) the tubesheet separating the housing between an unfiltered air plenum and a filtered air plenum;
• the tubesheet having an aperture and a sealing surface;
• (b) a first air filter cartridge operably installed in the aperture of the tubesheet;
• the first air filter cartridge including air filter media construction having a first, outlet end, flow face and an opposite, second, inlet end, flow face;
• (i) the filter media construction comprising fluted media secured to a facing media sheet;
• (ii) the filter media being closed to flow of unfiltered air completely therethrough;
• (iii) a centerboard having a media portion embedded within the media construction;
• the centerboard having first and second opposite sides;
• (iv) the media portion that is embedded within the media defining an aperture arrangement extending completely through the centerboard from the first side to the second side;
• and
• (v) an adhering sealant securing the centerboard to the media construction;
• (A) at least some adhering sealant extending through the aperture arrangement;
• and
• (vi) a gasket arrangement secured to the filter media construction compressed against the tubesheet sealing surface.

A method of making an air filter cartridge;

• the method comprising:
• (a) providing a centerboard including a media portion and having first and second opposite sides;
• (i) the media portion defining an aperture arrangement extending completely through the centerboard from the first side to the second side;
• (b) coiling z-media around the media portion of the centerboard;
• and
• (c) while coiling, securing the z-media and the centerboard together by using an adhering sealant that extends through the aperture arrangement of the centerboard.