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Question:

Is there any way to clean the protective film on standard door?

nan

Answer:

The simple way is to use an electric hair dryer to heat it, and then tear it off.
The ways to remove the protective film on stainless steel door: 1. If the film is not too big, you can apply some lacquer thinner to it and then scrub it with cleaning ball. 2. Detergent used in textile industry will work (Bottled such detergent is called al). I've tried it. It really works well. 3. Use sulfuric acid. But you should mix it with water before use, otherwise the door will corrode. Immerge the door into the mixed sulfuric acid for a period of time and scrub it with cleaning ball. 4. Firstly, use electric hair drier to heat the film. And them slowly tear it off or scratch it off with wooden shovel. The glue marks can be cleaned by solvent oil. If you don't have hair drier, boiling water is also okay! The best way is to heat the film at first and then clean it with talcum powder. It can stay glossy and new.
Using box cutter to scratch the film from the part near floor. Do NOT scratch it too hard. Ensure that the surface of the door is not damaged. If you do not know how to control the strength at beginning, you can tilt the box cutter to make the angel between the blade and the film no more than 30 degrees. After you cut a large area, it will be easy to tear off the rest.
I don't know whether you're talking about wooden door or stainless steel door. If it's stainless steel door, I suggest you to wipe it off using soft cloth with lacquer thinner or n-hexane. However, lacquer thinner and n-hexane are industrial supplies. I don't know whether you can get them. If it's wooden door, things are more troublesome because the ways above are not suitable. The reason is that both lacquer thinner and n-hexane will corrode the paint of the door. And I suggest you not to remove the protective film on the new door. The film will fall off itself when it's used for too long.
The ways to remove the protective film on stainless steel door: 1. If the film is not too big, you can apply some lacquer thinner to it and then scrub it with cleaning ball. 2. Detergent used in textile industry will work (Bottled such detergent is called al). I've tried it. It really works well. 3. Use sulfuric acid. But you should mix it with water before use, otherwise the door will corrode. Immerge the door into the mixed sulfuric acid for a period of time and scrub it with cleaning ball. 4. Firstly, use electric hair drier to heat the film. And them slowly tear it off or scratch it off with wooden shovel. The glue marks can be cleaned by solvent oil. If you don't have hair drier, boiling water is also okay! The best way is to heat the film at first and then clean it with talcum powder. It can stay glossy and new. Besides, you can give paint diluent, acetone solution or alcohol a try (They are all organic solution.). But I think paint diluent is better. We call it acquer thinner or banana oil here. Generally it's sold in hardware stores. But I would like to dilute the kind of paint will be relatively easy to use, anyway, the hardware stores generally have to sell, and you can also try to dilute the paint with a solution, or a wooden shovel.

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