Patent ID: 7811399
Filing Date: 2010-10-12
Classification: B26D,B29D,Y10T

Abstract:
1. A method of cutting an elastomeric strip of sealant material having an organoperoxide component that results in a depolymerization of a major portion of the strip during vulcanization to create or form a very tacky sealant material capable of filling nail puncture holes to prevent air loss in a tire, comprises; advancing a strip of the sealant material a predetermined distance on a first conveyor means; resisting reverse movement of the strip relative to the direction of advance by supporting the strip on a second conveyor means having a plurality of one way directional rollers which provide a frictional resistance to reverse movement of the strip, the second conveyor being on a downstream side of a cutter assembly relative to the direction of advance; tensioning the strip wherein the step of tensioning includes the step of reversing the direction of the first conveyor means while resisting reverse movement of the strip by said second conveyor means to tension the strip as the cutting occurs; heating a guillotine cutting blade of the cutter assembly to a temperature between 190 degrees and 210 degrees F.; and cutting simultaneously across the entire width of the strip with the heated guillotine cutting blade through the thickness of the strip on a skive angle of 45 degrees or less to form a cut to length strip of material thereby relaxing the tension in the strip as the skive cut ends of the strip move apart.