1.What are the core storage principles?
Avoid direct sunlight.
Keep the environment dry and well-ventilated.
Control the ambient temperature.
2.How to keep the environment dry and well-ventilated?
The warehouse floor should be higher than the outdoor ground level and properly protected against moisture.
Coated rolls should not be placed directly on the ground. They should be elevated at least 100-150mm using wooden blocks or pallets to ensure air circulation underneath and prevent water or moisture buildup.
Sufficient gaps (passages) should be left between stacks to allow for air circulation and moisture dissipation.
Avoid storing them near heat sources and moisture sources such as water pipes and steam pipes.
3.What is the correct way to stack them?
The rolls should be stored upright, with the axis of the roll perpendicular to the ground. Laying them flat is strictly prohibited, as it will cause the lower layers of material to bear excessive pressure, resulting in coating adhesion, which may damage the coating and color when removed.
The number of stacked layers should not be too high to prevent deformation of the bottom layers. Follow the manufacturer's recommendations.
Different specifications and batches of rolls are best stored separately for easy management and first-in, first-out (FIFO) processing.
4.What situations should be avoided?
Do not store pre-painted rolls in open areas exposed to sun and rain.
Do not place them directly on damp surfaces such as cement or soil.
Do not lay pre-painted rolls flat or stack them too high.
Do not store them in the same warehouse as corrosive chemicals (such as acids, alkalis, solvents, etc.) to avoid volatile gases corroding the coating.
Do not tightly wrap or cover them with ordinary, light-transmitting plastic sheeting for extended periods, as this will create moisture inside and cause condensation. If covering is necessary, use a breathable tarpaulin and ensure proper air circulation.
5.Do special colors require extra attention?
Dark colors (such as deep red, navy blue, dark gray, and black): Dark colors absorb heat and ultraviolet rays more easily, making them more sensitive to sunlight and high temperatures. They should be given higher priority for protection from light and cooling during storage.
Vibrant colors (such as bright red, orange, and blue): The pigments in these colors may be more sensitive to ultraviolet rays and are more prone to fading than neutral colors (such as white, off-white, and light gray).