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T A P I O ® RQP – Roll Quality Profiler T A P I O Technologies 1 Tapio Technologies Oy All rights reserved/ Tapio RQP Roll Quality Profiler.

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Presentation on theme: "T A P I O ® RQP – Roll Quality Profiler T A P I O Technologies 1 Tapio Technologies Oy All rights reserved/ Tapio RQP Roll Quality Profiler."— Presentation transcript:

1 T A P I O ® RQP – Roll Quality Profiler T A P I O Technologies 1 Tapio Technologies Oy All rights reserved/ Tapio RQP Roll Quality Profiler

2 T A P I O ® RQP – Roll Quality Profiler T A P I O Technologies 2 Tapio Technologies Oy All rights reserved/ Tapio RQP: Measuring Principle The Measuring principle is to launch an impact body by spring force against the test surface on which it rebounds. Velocity and distance are measured and processed to form the hardness profile. RQP measures 10 times every second.

3 T A P I O ® RQP – Roll Quality Profiler T A P I O Technologies 3 Tapio Technologies Oy All rights reserved/ Smooth hardness profile is of great importance for print houses

4 T A P I O ® RQP – Roll Quality Profiler T A P I O Technologies 4 Tapio Technologies Oy All rights reserved/ Profile resolution vs. measurement speed 1 m/s, 1measurement every 10 cm 0.5 m/s, 1measurement every 5 cm 0.1 m/s, 1measurement every cm Typical Detailed Fast

5 T A P I O ® RQP – Roll Quality Profiler T A P I O Technologies 5 Tapio Technologies Oy All rights reserved/ Example of a bad hardness profile High Max-Min value causes tension control problems on a print machine.

6 T A P I O ® RQP – Roll Quality Profiler T A P I O Technologies 6 Tapio Technologies Oy All rights reserved/ Web width in the paper machine Front edgeBack edge Paper machine Customer rolls Soft roll edge is a typical hardness profile problem

7 T A P I O ® RQP – Roll Quality Profiler T A P I O Technologies 7 Tapio Technologies Oy All rights reserved/ Tense areas:- Increase web breaks - Increase paper waste Local faults in hardness profile

8 T A P I O ® RQP – Roll Quality Profiler T A P I O Technologies 8 Tapio Technologies Oy All rights reserved/ Slack areas:- Increase web breaks - Increase paper waste Local faults in hardness profile - Slack area found 10cm from the roll edge -Width 2 cm, requires high resolution measurement

9 T A P I O ® RQP – Roll Quality Profiler T A P I O Technologies 9 Tapio Technologies Oy All rights reserved/ Roll Hardness Profile, z-direction Example of hardness profile in z-direction ! Hardness increase towards the center of the roll. Measurement does not damage the roll.

10 T A P I O ® RQP – Roll Quality Profiler T A P I O Technologies 10 Tapio Technologies Oy All rights reserved/ Automatic vs. Hand Held Unit White line: Manual measurement, speed 20cm/sec. Red line: Automatic measurement, accelerating. Speed only effects the resolution, not level of values !

11 T A P I O ® RQP – Roll Quality Profiler T A P I O Technologies 11 Tapio Technologies Oy All rights reserved/ Tapio RQP – Complete System 1. Tapio RQP system 2. Tapio RQP is portable. 3. Tapio RQP uses tablet-PC.4. Tapio RQP measuring head.

12 T A P I O ® RQP – Roll Quality Profiler T A P I O Technologies 12 Tapio Technologies Oy All rights reserved/ Conclusions -Uneven paper roll hardness profile is a major factor for a web break at the printing plant. -RQP is the fastest and the most accurate system to detect reels that need to be excluded in printing or converting processes. -RQP high resolution hardness measurement detect narrow slack and tense areas. -Roll hardness profiles are easily available for further use in mill system etc. - Hardness measurements in z-direction are possible.


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