TIRE WITH COMPOSITE SEALANT LAYER AND METHOD OF MAKING

• Main Authors: ROGENSKI, Elizabeth Amelia, BALDAN, Adam Mark, DYRLUND, Christopher David
• Format: Patent
• Language: English; French; German
• Published: 02.03.2022
• Subjects: PERFORMING OPERATIONS; PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

A method for forming a tire (100) is disclosed, the tire having a tread (120) and at least one ply (190) radially inward of the tread (120). The method comprises applying a composite layer (200) is radially inward of the at least one ply (190) and forming the composite layer (200) comprising the steps: forming a dual layer strip (230) of a first compound (232) and of a second compound (234), wherein the first compound (232) is an air impermeable compound; and the second compound is a sealant compound (234), and then winding the dual layer strip (230) onto a tire building drum. Also, a tire (120) is disclosed having a composite layer (200). The composite layer (200) is located radially inward of a layer of ply (190), preferably radially inward of the radially innermost layer of ply (190) of the tire (100). The composite layer (200) has a first and second laterally outer end (220) formed of a strip of an air impermeable compound, and the composite layer has a middle portion (240) formed of a dual layer strip (230) having a first layer (234) of a sealant compound, and a second layer (232) formed of an air impermeable compound.