Patent ID: 9403332
Filing Date: 2016-08-02
CPC Classification: B29D,B60C

Claim Text:
1. A method of manufacturing a tread portion of a tire, the steps comprising: placing a layer of uncured tire rubber onto a surface; cutting the layer of uncured tire rubber to create at least one incision in a predetermined shape in the layer of uncured tire rubber; curing a portion of the layer of uncured tire rubber adjacent to the at least one incision and without curing all of the layer of uncured tire rubber; repeating said steps of placing a layer, cutting the layer, and curing a portion of the layer using one or more additional layers of uncured tire rubber until the tread portion having a predetermined thickness is formed and at least one sipe is created by adjoining incisions in adjacent layers of the uncured tire rubber such that the incisions are connected to each other; and curing the remainder of the layers of uncured tire rubber without eliminating the incisions in the layers of uncured tire rubber.