System Engineers & Consultants

A caustic tank is a key component in plastic recycling lines, used for deep cleaning of plastic flakes, especially PET. It contains a heated solution of caustic soda (sodium hydroxide) that helps remove stubborn contaminants like glue, oil, food residues, and labels from plastic surfaces. The hot caustic solution breaks down organic materials and adhesive residues, ensuring high-purity output. The caustic tank is usually integrated with a circulation and heating system for consistent cleaning performance and may include safety features for handling chemicals.

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