Problem Solving
Automated Raw Material Handling for PVC Pastes and Plastisol/Coating Lines
In the production of PVC pastes, powdered and liquid raw materials must be reliably supplied and precisely dosed. AZO’s automated raw material handling systems combine storage, conveying, weighing, and dissolver feeding into a seamless process. This allows the individual production steps to be coordinated and ensures the supply of raw materials to various mixing lines.
Automatically Conveying and Weighing PVC and Fillers
PVC and fillers such as chalk are stored in outdoor silos and fed from there to the respective mixing lines via vacuum weighing systems. The silos are filled using silo trucks or a bag-dumping station with an integrated screening system. This ensures that raw materials are made available as needed and supports the supply of the production lines.
Precise Dosing of Liquid Components
Liquid raw materials, such as plasticizers, are stored in tanks and pumped to liquid scales located above the dissolvers. Precision metering valves enable accurate metering and additive weighing of the components. This facilitates controlled raw material addition during the production of PVC pastes.
Reliably Produce Color Batches and Premixes
The AZO system processes liquid and powdered raw materials for the production of paint batches. Liquid components from drums or containers are fed into the system in a semi-automated manner, while dry materials are weighed at a bag-feeding station. The raw materials are then fed into the premix paste production line. This allows different forms of raw materials to be combined within a coordinated process flow.
Centrally Control Dissolver Feeding and Paste Handling
After the dissolving process, the finished PVC pastes are temporarily stored in storage tanks and made available for subsequent processes. The AZO process control system, featuring visualization and a PLC, controls and monitors the entire plant—including the dissolvers—and fully documents the process sequences. In addition, remote maintenance enables access to the plant from a distance.
