FAQ

Q：Why do water droplets appear on waterproof canvas? Is my canvas leaking?

A：These are all phenomena caused by the condensation of water vapor when it encounters cold temperatures.。
As for the reasons for the condensation of water vapor, it can be understood in this way: water has the characteristic of absorbing heat during evaporation and releasing heat during condensation. When water vapor encounters a cold object (environment), it releases heat outward, forming small water droplets. It can also be understood as follows: when the ambient temperature drops, the humidity in the air increases, forming supersaturated vapor, which then forms water droplets when it encounters condensation nuclei.
※When the weather suddenly becomes cold or hot, this natural phenomenon can occur. Please think carefully before purchasing, as returns cannot be accepted for this reason. Thank you.！

Q：How does PVC-coated mesh canvas shrink when exposed to heat?

A：After the raw materials melt, they are "stretched" at a specified temperature under external force, preventing the large molecules from sliding past each other,
thus freezing them in an unnatural state. At room temperature, the poor mobility of the large molecules in the plastic film prevents them from eliminating this unnatural state
through molecular motion, which is why plastic films subjected to heat do not shrink at room temperature. However, this is only a surface phenomenon; internally,
these seemingly stable heat-shrinkable films conceal unstable factors. This is because the process from raw materials to heat-shrinkable film formation involves a decrease in entropy,
rendering the thermodynamic state of the heat-shrinkable film unstable. In simple terms, preheating the film, stretching it, and cooling it (without undergoing heat-setting treatment) results
in a heat-shrinkable film. As the film strives to return from the unnatural state to the natural state, the molecular chains rapidly revert to an uncoiled state, causing the film to shrink.
This process is akin to an elongated rubber band returning to its original state upon relaxation.