Patent ID: 9321209
Filing Date: 2016-04-26
CPC Classification: B29C,B29K,B29L

Claim Text:
1. A method for making bulb seals, comprising providing at least one first main extruder; providing at least one first calibrator device, said at least one first calibrator device is a vacuum calibrator; providing at least one first cooling tank; providing at least one first pulling device providing at least one downstream extruder; providing at least one second calibrator device; providing at least one second cooling tank; providing at least one second pulling device; extruding a first material, said first main extruder forming a structural member; pulling said structural member using said first pulling device through said first calibrator device, said first calibrator device forming a final profile of said structural member; cooling said structural member in a cooling medium located in said first cooling tank to about 80 to 100° C.; extruding a second material with said at least one downstream extruder to form a bulb portion, said second material having a different durometer than said first material; bonding said bulb portion to said structural member; pulling said structural member and bulb portion using said second pulling device through said second calibrator device, said second calibrator device forming a final profile of said bulb portion; pulling said structural member and bulb portion using said second pulling device through said second cooling tank; cooling said bulb portion in a cooling medium located in said second cooling tank to about 80 to 100° C.; and cutting said structural member and bulb portion to provide bulb seals having a predetermined length.