Customer case:

Increased roll cover grinding intervals at Indah Kiat Pulp & Paper Perawang

May 15, 2023

Indah Kiat Pulp & Paper Perawang in Indonesia targeted to increase calender roll cover’s regrinding intervals in their PPM3.

Increased roll cover grinding intervals at Indah Kiat Pulp & Paper Perawang
Valmet Calender Roll Cover CL lifetime beyond our expectation.”
Riswan, Production Manager, PPM3, Indah Kiat Pulp & Paper Perawang

Summary

Location Indah Kiat Pulp & Paper Perawang (IKPP) PPM3, Indonesia
Customer challenges

The mill had challenges in their PPM3 related to short regrinding intervals of calender roll cover on CC roll because of paper ridging and barring. The average grinding intervals was 31-32 days, sometimes only 15 days.
Solution

The calender roll was recovered with Valmet Calender Roll Cover CL, a premium composite cover providing minimal nip deformation, high wear resistance and very uniform structure.

Results
  • The grinding interval of calender roll cover has increased, running time matching with scheduled roll changes. Average grinding interval is 53 days, reaching a maximum of 90 days.
  • Fewer planned and unplanned roll changes reducing maintenance costs
  • Maximum cover lifetime

Technical data

Machine supplier Beloit, one nip soft calender
Grade WFU, 35 – 90 gsm
Trim width 9,000 mm
Speed 1,500 m/min
Linear load 17 kN/m
Doctoring no doctoring
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Calender roll covers

Calender roll covers

Targeting long grinding intervals and smooth surface quality? Valmet’s calender roll covers provide longer service intervals and optimum paper or board properties. Besides providing better marking resistance, our calender covers allow much higher speeds and temperatures without damage than conventional alternatives. For paper and boardmakers these factors mean quality. Let Valmet help you to run with the most suitable cover for your calender.

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