Presented by Marcel Kloubert, Beta LaserMike

1. Targeting Inaccurate Length and Speed in Converting Applications with a Non-Contact, Laser-Based Measurement System Presented by Marcel Kloubert, Beta LaserMike

2. Traditional Length and Speed Measurements • Accomplished by using a roller that contacts the material being measured • The material turns the roller as the material moves • An encoder or tachometer is attached to the roller • Generates pulses as the wheel or roller rotates • Relies on friction between the material and roller

3. Disadvantages of Contact Encoders/Tachometers • Error caused by slippage • Dependent on friction • Wheel pressure • Product surface • Grease/ lubricant on surface • Mechanical inertia • Recalibration • Diameter changes because of wear • Diameter changes because of debris build-up • Maintenance • Bearings and other mechanical parts wear out

4. Problem because of Slippage • Slippage due to texture, slick coatings, lubricants, etc. • Contact method relies on wheel circumference and # of rotations • Contact measurement wheel: • Rides on product • Builds-up debris or wears down, requires recalibration

5. d Problem because of Build-up d = 100mm 1 circ= 314,16mm 0,5 mm buildup: d = 101 mm 1 circ= 317,3mm = 0,989 % Loss off material

6. Non-Contact Measurement Technology • Highly accurate, repeatable product length and speed measurements • Measures product directly • Uses Laser Doppler Velocimetry (LDV) technology • True Zero Speed and direction measurement • Better than +/-0,05% accuracy, +/-0,02% repeatability • Permanent calibrated • Independent of density and color of material

7. How Non-Contact Laser Measurement Works • Non-contact encoder projects an interference pattern on the surface to be measured Non-Contact Encoder • As product moves, light is scattered back to the unit at a frequency proportional to the speed of the material Laser Beams Standoff Distance Pass Line +Vel -Vel Depth of Field

8. LaserSpeed LDV Theory Fringe direction

9. Non-Contact Encoder Applications

10. Application Example > Labeling Problem • 1,5 % length and speed inaccuracy • 6000 meter roll • 90 meter of uncertainty • Each roll costs a significant amount in unnecessary expense • Give away = roll length x material cost/sqm x contact encoder accuracy (1,5%)

11. Application Example > Labeling Solution • Install non-contact encoder at specific measurement points on the line • Control length and speed of lamination line and coating application • +/- 0,02% repeatability • Instead of 90 meter per every 6000 meter of uncertainty • Lowers error to a max of 1,2m on a 6000 meter roll Coating Control Lamination Control

12. Application Example > Cross Cutter Control • Solving “tail out” boards problem Z

13. Application Example > Flying Saw Control

14. Application Example > Cutting Control Solution • Problem with slippage, mechanical inertia • Control length direct to the PLC • Instead of +/- 1mm at line speed of 140m/min • Lowers error to +/- 0,2mm by eliminate slippage and mechanic issues

15. Application Example > Nonwoven, Soft Surfaces Problem/Solution • 2% length variation due to the density and surface • Each variation costs a significant amount • Give away + inaccurate length cut • Control the guillotine or flying saw to improve to +/- 1mm length

16. Application Example > rough surface Problem/Solution • 2%- 3% length variation due to the roughness of surface • Give away + inaccurate length cut • Machine Control to improve to +/- 0,05%

17. Conclusion: Laser Non-Contact Encoder Advantages • Laser non-contact encoder is proven on many different types of manufacturing processes • No slippage error - optical system and does not contact the product • Permanentcalibrated • High +/-0.02% repeatability minimizes product waste, increases savings • No moving parts to wear out: reduces maintenance and downtime, and lowers cost of ownership

18. Thank you – Questions? Hall A6 Stand 456