While choosing the right rubber calender is important, learning to operate it smartly to avoid these 8 common calendering defects is equally key for your success with this machine.

1. COMMON DEFECTS
TheirCausesInCalendering8 A Info-Series By Rubber Machinery World - http://rubbermachineryworld.com
Image: A New 3-Roll Calender from Bharaj Machineries
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» Incorrect crowning of calender rolls
» Excessive wearing of bearings
» Improper operation of roll bending/zero clearance devices
» Roll temperature too high
» High feed bank on to the rolls
» Compound Stock warmed up for longer duration
» Insufficient break-down of your compound
» Inadequate temperature control
» Insufficient compound feed in the banks
» Roll temperature too high
» Large nip opening
» Stock warm up for long time
» High Compound in the nips
» Insufficient nip opening between rolls
» Excess compound in the nip
» Improper roll crown
» High compound viscosity
» Improper Roll temperature
» Improper running speed
» Low compound viscosity
» Improper warming of the compound
» High viscosity compound
» Improper warm up, high bank
» Non uniformity of warm up
» Lower roll temperature
» Lower temperature in one of the rolls
» High friction ratio
» High calendering speed
» Use of anisotropic fillers
Choose Wisely. Operate Smartly