Thick Plastic Sheeting for Greenhouse

The following points are available for reference when purchasing the thick plastic sheeting for greenhouse: The use period is 12 months, and the thickness of the greenhouse film could be 0.08mm; The use period is 24-36 months, and the thickness of the greenhouse film could be 0.12-0.15mm; The thickness of the film used for multi-span greenhouse could be above 0.15mm.

Many people think that the thicker the plastic film, the better the insulation. In fact, this understanding is wrong. Let's first take a look at the insulation principle of plastic film: plastic film divides the space into a separate closed space, saving heat and reducing heat exchange inside and outside the boundary. Where does the heat in plastic film come from? Its heat comes mainly from the infrared radiation generated by sunlight on the wall and the reverse radiation of the earth. If the plastic film we choose is too thick, the ability of sunlight to pass through the plastic film will be greatly reduced (we call it the transparency of the plastic film), which will cause a temperature difference in the enclosed space. Therefore, it is not the thicker the plastic film, the better the insulation.