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We are in the construction of greenhouses, usually in order to ensure that the greenhouse ventilation, the general will choose to install the roll film. There are many kinds of roll film device, is generally divided into manual roll film, electric roll film, greenhouse film roll, roll film. So how do we choose the roll film device?
First look at his film is not the outer layer, wear resistance, adhesion is not good, a good film is smooth and free of impurities, moisture resistant anti rain erosion, the outer layer is not the key components but also directly affect the quality of the film.
Then look at the internal components of film roller, the internal components of the key gear, now on the market a lot of film roller gear are made of aluminum, some manufacturers to adopt aluminum gear in order to reduce production costs, but the strength of aluminum gear too much of the time, when the stress is easy to roll flat gear tooth.
Finally look at the operation design of film roller is not reasonable, rational design of the film is easy operation, high efficiency, this should be installed in a hand to decide after experience, good film rolling device in operation design with self-locking device, can stop at any place to start.