Patent ID: 11878322
Assignee: KIMBERLY-CLARK WORLDWIDE, INC.
Field: Surface technology, coating (Chemistry)
Classification: CPC B | IPC B

Claim 0:
1. A system for applying an adhesive to a moving web of material comprising:
a nozzle in fluid communication with an adhesive supply;
a web conveying device for conveying the moving web of material, the web conveying device being configured to convey the moving web of material adjacent to the nozzle without contacting the nozzle;
a web deflecting device that periodically causes the moving web of material being conveyed by the web conveying device to contact the nozzle for a length of time, the web deflecting device comprising a rotating roll in the shape of a cylinder having an outer surface, wherein a deflecting cam is disposed on a portion of the outer surface of the rotating roll, the deflecting cam including a web-contacting surface disposed on a surface of the deflecting cam opposite from a surface in contact with the rotating roll, wherein the web-contacting surface is curved between a leading edge and a trailing edge of the web-contacting surface, wherein the web-contacting surface comprises a length between the leading edge and the trailing edge, the length being greater than a length of the nozzle, wherein the nozzle and web-contacting surface are positioned such that the moving web of material is parallel with a horizontal plane when travelling toward the nozzle and forms an exit angle when travelling away from the nozzle, wherein the deflecting device causes the moving web of material to contact the nozzle in a manner such that the moving web of material forms a maximum exit angle with the nozzle, the maximum exit angle being from about 5° to about 30° in relation to the horizontal plane that is perpendicular to an exit port on the nozzle, wherein the exit angle changes from a minimum exit angle to the maximum exit angle while the moving web of material is in contact with the nozzle such that web deflecting device is configured to clean the nozzle; and
an adhesive control device in communication with the nozzle that controls a flow of adhesive through the nozzle, the adhesive control device being configured to dispense a metered amount of adhesive through the nozzle prior to contact with the moving web of material such that a length of an adhesive streak disposed on the moving web of material in a longitudinal direction can be controlled.