On-Line Profilometer

The Starrett-Bytewise On-Line Profilometer (OLP) provides automatic, high speed, non-contact measurement of tread and sidewall extrusions at a new lower cost of ownership.

On-Line Profilometer (OLP) Blue

ON-LINE MEASUREMENT FOR TREAD/SIDEWALL EXTRUDERS AND GUM CALENDERS

Tread profile geometry has a strong influence on the cured tire uniformity. Treads that are non-symmetrical produce cured tires with uniformity and balance problems. Over-sized treads are a waste of materials. In order to assure the most precise tread and sidewall extrusion quality, tire makers worldwide have adopted the Starrett-Bytewise On-Line Profilometer (OLP) as the standard for extrusion monitoring. The Starrett-Bytewise On-Line Profilometer (OLP) provides automatic, high speed, non-contact measurement of tread and sidewall extrusions. OLP BLUE provides these trusted measurements at a new lower cost of ownership. OLP outperforms scanning systems by collecting instantaneous full width cross-section profile rather than measuring in a zigzag pattern, which can miss up to 90% of the material. 

OLP BLUE was designed to be installed after the cooling exit to monitor and alarm when key dimensions exceed the allowable tolerances. Dimension changes often indicate changes in rubber visco-elastic properties or changes in the equipment set-up. When dimensions change, the Operator is alerted to intervene. Early intervention can lead to faster startup, reduced rework, better production rates, and better tread uniformity. Starrett-Bytewise OLP BLUE contains unique features like a robust design, sealed sensors, and a built-in CPU. Couple this with a 3DP or OFLP to make use of our exclusive Master Design Ecosystem, and you can greatly reduce the time and scrap it takes to go from design to approved extrusion.

Uses

  • Use OLP BLUE after cooling to produce data histories to compare any run with its historical performance and verify the effect of quality improvement initiatives.
  • Use OLP BLUE after cooling to check for die wear.
  • Use OLP BLUE data alongside other process data such as material rheology, extruder die head pressure, screw RPM, screw power, and various temperatures to develop better knowledge as to the complex interactions between materials, process set-points, and profile geometry.

Resource Documents

2512-1 - On-Line Profilometer (OLP BLUE) 2025

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643 KB

Measurement Systems for the Tire Industry (Bulletin 2511)

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1.14 MB

OLP - On-Line Profilometer (Bulletin 2512)

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607 KB

OLP On-Line Profilometer Tread Dimensional Variation Study

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423 KB

OLP - for Foamed PVC_ Rigid PVC and Calendered Rubber Sheets (Bulletin 2527)

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276 KB

3005 - Starrett-Bytewise - Nested Closed-Loop Scheme for Tread Extrusion

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230 KB

Starrett-Bytewise - Tire Industry Contact Info

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129 KB

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