Meaning
Purchase agreements for polymer resins establish the maximum permissible water content before a shipment can be declined by the buyer. Incorporating a moisture rejection clause protects the moulder from accepting material that requires excessive drying or is already degraded. Such specification is particularly important for hygroscopic resins like polyamides, where high water content causes hydrolysis during processing.
Quality Assurance
Incoming quality control teams test resin shipments using Karl Fischer titration to verify compliance with the moisture rejection clause before unloading silos. If the water content exceeds the agreed threshold, the moulder has the right to refuse the batch. Preventative testing avoids the introduction of wet resin into the production line.
Financial Protection
Receiving wet resin incurs high costs from prolonged drying times, lost production capacity, and elevated energy consumption. Through the moisture rejection clause, the financial burden of drying or returning the material is shifted to the supplier. The liability shift ensures that raw material suppliers adhere to strict packaging and transport standards.
Supply Chain Stability
Enforcing these standards builds a reliable flow of raw materials that meets the necessary manufacturing standards. Suppliers are incentivized to use high-barrier packaging and dry transport containers to avoid rejected shipments. A collaborative focus on material dry weight reduces supply chain interruptions and ensures that the moulding plant can maintain its planned delivery schedules.
When both parties agree on the test method and rejection threshold, disputes are resolved quickly without resorting to litigation, maintaining a productive partnership between the compounder and the moulder.
