Method for manufacturing fluted media
AssigneeDonaldson Company, Inc.
InventorPatrick Golden
Life of this patent
Estimating the term…
Abstract
Apparatus and method for manufacturing a filter element by winding a fluted media into a coreless roll. The fluted filter media is transported forwardly and a front edge is lifted upwardly by a rearwardly facing inclined ramp. A rearwardly facing surface pushes the front edge rearwardly, and then a downwardly facing surface pushes it downwardly, thereby forming an incipient log, or roll start. The remaining portion of the fluted media is then rolled around the incipient log, thereby making a coreless cylindrical fluted filter media.
Claims25
A method of manufacturing, in an automated process, a filter element by winding a fluted media into a coreless roll, the flutes of the media having a first end that is closed and a second end that is open, the manufacturing method comprising:
- (a) sealing a front end of the fluted media transversely across the front end and scoring a valley of at least one flute proximate the front end to facilitate curling of the front end;
- (b) transporting the fluted media forwardly;
- (c) applying a sealant on top of the fluted media along a side edge of the media adjacent the second end of the flutes;
- (d) lifting, without gripping, a front edge of the fluted media upwardly as it moves forwardly;
- (e) pushing, without gripping, the front edge rearwardly and then downwardly so as to form an incipient log;
- and
- (f) rolling the remaining portion of the fluted media around the incipient log.
A method of manufacturing, in an automated process, a filter element by winding a fluted media into a coreless roll, the flutes of the media having a first end that is closed and a second end that is open, the manufacturing method comprising:
- (a) sealing a front edge of the fluted media transversely across the front edge including cutting through the fluted media generally along a peak of a flute and filling the remaining flute portion with sealant;
- (b) transporting the fluted media forwardly;
- (c) applying a sealant on top of the fluted media along a side edge of the media adjacent the second end of the flutes;
- (d) lifting, without gripping, the front edge of the fluted media upwardly as it moves forwardly;
- (e) pushing, without gripping, the front edge rearwardly and then downwardly so as to form an incipient log;
- and
- (f) rolling the remaining portion of the fluted media around the incipient log.
Dependencies are inferred from the claim text.