Device and method for turning selvedges on calender

• Main Author: HEINTZE DAVID
• Format: Patent
• Language: Chinese; English
• Published: 17.09.2014
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; PERFORMING OPERATIONS; PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

A method for calendering a continuous web of reinforcing threads (80) during which said web of reinforcing threads is arranged between a continuous upper sheet of rubber (6) and a continuous lower sheet of rubber (7), said sheets of rubber having a width greater than that of the web of reinforcing threads, such that the two lateral portions of said sheets of rubber not located perpendicular to the web of reinforcing threads form selvedges (61, 62 and 71, 72). The assembly formed in the previous step is inserted into the gap (23) of a calender comprising at least two cylinders (2, 3) in such a way as to make the rubber penetrate into the spaces between the reinforcing threads. Before inserting the web of reinforcing threads and the sheets of rubber into the gap (23) of the calender, the two selvedges (71, 72) of one of the sheets of rubber (7) are folded back on themselves.