Plate double-sided pretreatment device for portable house and pretreatment method using same

The invention discloses a board double-sided pre-treatment device of a portable house and a pre-treatment method using the board double-sided pre-treatment device, and aims to form protective layers on painted surfaces on two sides of a sandwich board, so that less water drops and dust can be effectively attached to the outer wall of the built portable house, the painted surfaces of the sandwich board are greatly protected, the maintenance and repair time is prolonged, and the maintenance cost is reduced. And the durability and the attractiveness of the portable house are improved. In addition, compared with the interior of the portable house, the waxing and polishing process improves the board surface brightness of the sandwich board and facilitates light reflection, and under the condition that the daylighting amount is small, the indoor brightness can still be improved to a certain degree, and the comfort level of residents is improved. The sandwich panel is overturned for multiple times through the panel