Abstract: The present invention relates to a method that allows the automatic and hands-free threading of a calender set of rolls comprising one or more pairs of rolls that have a nip between them by preventing the skim from sticking to a roll undesirably as it exits the nip. This is particularly useful during startup or when the continuous running of skim through the calender is interrupted or broken. This method also comprises steps that help prevent the interruption of the calendering process including the breaking of the skim being processed. The steps for startup include running the rolls to which the elastomeric mix is desired to stick at slower speeds than other rolls. The steps for maintaining continuous running of the calender after startup include running the rolls to which the elastomeric mix is desired to stick at faster speeds than other rolls.

Abstract: A tire having aggressive tread features with improvements in uniformity that can also improve endurance is provided along with a method and apparatus for manufacturing such a tire. The tire and its manner of manufacture can achieve a reduction or elimination of certain non-uniformities that can occur during the molding of large tread blocks. This can improve temperature performance to provide increased tire endurance. The present invention further relates to a tire made using such a method and that may have layers of different material properties for different tire performances. In one embodiment, a layering technique that uses at least one layer extending across the full axial width of the tread and having scalloped or notched lateral or axial edges is provided. In yet another embodiment, tread blocks are built upon the scalloped layer(s) to provide more material where it is needed most to create tread features.

Abstract: A tire having aggressive tread features with improvements in uniformity that can also improve endurance is provided along with a method and apparatus for manufacturing such a tire. The tire and its manner of manufacture can achieve a reduction or elimination of certain non-uniformities that can occur during the molding of large tread blocks. The reduction or removal of these non-uniformities can improve temperature performance to provide increased tire endurance. The present invention further relates to a tire made using such a method and that may have layers of different material properties for different tire performances. In one embodiment, a layering technique that creates tread blocks or lugs in close proximity to each other and that can run continuously is provided.