Increased sizer roll cover running time with Valmet support
Oct 25, 2024
PT. Tjiwi Kimia PM11 in Indonesia is a high speed coated fine paper line with significant annual production, where uninterrupted reliable running time is of the utmost importance. Cover change interval can be one limiting factor. The mill chose the Valmet service experts from Cikarang to aid in taking a step forward in sizer cover running time, forming a winning team together.
Increase running time on the machine to double the existing time and more, without quality issues."
Mr. Erwan, Production Manager PM11, PT.Tjiwi Kimia,Tbk, Indonesia
Summary
Location
PT. Tjiwi Kimia mill in Indonesia
Customer target
At PM11, the mill was seeking to increase the running time of the film sizer rubber covers which is presently limited to ~30 days.
Solution
Valmet Sizer Roll Cover SH in use.
Expert support from Valmet: grinding optimization of sizer rolls.
Follow up by the Valmet team together with customer during cover operation to increase cover running time further while ensuring paper quality.
Results
Sizer roll running time has doubled, and the grinding interval now meets the customer’s schedule (2x shut-down interval).
Thus, maintenance costs (e.g., grinding) are reduced.
Total cover lifetime is increased.
Technical data, PM 11:
Size press
Beloit sizer
Process
Starch sizing with metering rod
Width on reel
8,950 mm
Speed on reel, avg
1,200 m/min
Valmet’s roll cover has reached our first target (50-60 days), and we will now challenge it to reach even longer running times without any quality issues with the paper."
Mr. Teguh B Wibowo, Maintenance Manager PM11, PT.Tjiwi Kimia,Tbk, Indonesia
