Roller soaking sealing performance: in water after roller to 1450r / min speed of operation 24h, the amount of water which does not exceed 150g. Drenching sealing performance: roller to 1450r / min speed of operation after 120h plastic rollers, the amount of water which does not exceed 250g. Idler roller converted to strengthen the life of the actual life of greater than or equal 20000h. Roller Maintenance: In order to ensure sealing performance and idler roller performance plastics processing, prohibit disassemble roller. Use of the process, to promptly clean up the bonding material on the roller. Roller found abnormal noise, to the timely replacement maintenance. Using the Operation Instructions and idlers general plan requirements for the belt conveyor will be equipped with the press.