公开(公告)号：US4904319A

公开(公告)日：1990-02-27

申请号：US295741

申请日：1989-01-10

申请人： Costantino L. Divincenzo ,  Ira L. Wood

发明人： Costantino L. Divincenzo ,  Ira L. Wood

IPC分类号： B29C65/00 ,  B29C65/08 ,  B29D30/52 ,  B29K21/00 ,  B29L30/00

CPC分类号： B29D30/52 ,  B29C65/08 ,  B29C66/0322 ,  B29C66/1162 ,  B29C66/14 ,  B29C66/4322 ,  B29C66/4324 ,  B29C66/71 ,  B29C66/73752 ,  B29C66/73941 ,  B29C66/81433 ,  B29C66/8322 ,  B29C66/9513 ,  B29C66/9517 ,  B29K2021/00 ,  B29K2105/08 ,  B29L2030/002

摘要： A method for splicing beveled edges of a relatively thick tire tread strip free of internal reinforcing cords by ultrasonic energy. A contact face of a sonic welding tool or horn is pressed against the mating overlapping edges of the strip at a cylinder pressure within a range of 20 psi to 80 psi. Ultrasonic energy is applied to the strip while the pressure is applied thereto for a period of between 2 seconds and 12 seconds to heat and soften the rubber compound of the strip without vulcanizing the rubber compound. Pressure is maintained by the tool against the strip after application of the ultrasonic energy for a period of generally between 0.5 to 2.0 seconds to permit the softened compound to cool, set and bond together to form a strong bond between the overlapped edges. The contact face of the horn generally matches the contour of the contacted surface of the strip.