1. Transportation and Storage Conditions
Transport Vibration or Impact: Severe vibration can cause the lid to loosen or deform, compromising the seal.
Storage Temperature and Humidity: High or low temperatures can alter the paint's composition, while high humidity can allow moisture to intrude, affecting the seal.
Light and Oxidation: Prolonged exposure to sunlight can accelerate the aging of the sealing material, and oxygen exposure can also trigger oxidation.
2. Material and Process Issues
Seal Quality: Material aging (such as rubber hardening), improper design, or processing defects can lead to seal failure.
Cap Fit: Improper fit between the bottle cap and the seal, or assembly errors (such as misaligned O-rings), can directly lead to leaks.
Production Process Defects: Improper heat sealing process parameters or equipment failure can affect the seal of the package.
3. Usage and Maintenance Factors
Improper Opening Methods: Using tools or excessive force to pry can damage the lid structure. Inadequate seal testing: Failure to regularly monitor pressure decay or leakage rate may result in minor leaks going undetected.
Impact of solvent evaporation: When solvents evaporate from the paint, pressure changes within the can may disrupt the seal balance.
4. Environmental and Time Factors
Exceeding the expiration date: Even if unopened, paint stored beyond its expiration date may degrade seal performance due to chemical changes.
Extreme climate: High temperatures and high humidity accelerate the aging of sealing materials, increasing the risk of leakage.
