Case Study 114: Batching
Industry Sector: Process Control
PVC Compounder System

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TECHNOLOGY REPLACED:
Relay Panel

NEW TECHNOLOGY APPLIED:
Allen Bradley SLC 500
Allen Bradley PanelView

PROJECT DESCRIPTION:
Staneco Corporation designed a control system to produce batches of compounded PVC. The system automatically weighed out batches of PVC resin and calcium carbonate. The material was conveyed with a pneumatic conveying system into a compounder drum. The drum was rotated and heated with the temperature being monitored. A liquid stabilizer and additional chemicals were automatically added to the mix when the temperature reached predetermined temperatures. At the end of the cycle, the material was unloaded into a cooling drum until it was cool enough to be transported into a storage silo. The material was then automatically distributed to several lines of extruders based on demand from the extruders.

PROJECT OUTCOME:
The new control system eliminated repeat failures which were greatly impacting production and quality.

 
Process Control: Batching