Process method for rust prevention and decoration of surface of metal object

Abstract

According to the invention, the plastic cloth made of the BOPP plastic film with waterproof, moisture-proof, gas-resistant, moisture-resistant, corrosion-resistant, acid-base-resistant and other properties replaces traditional paint to resist corrosion for ships and various metal components, and compared with traditional paint coating operation, the construction operation of pasting and covering the plastic cloth is simple and easy to implement; more importantly, harmful chemical substances contained in the plastic cloth are much less than those contained in chemical paint used nowadays and can be neglected, so that the body of an operator can be prevented from being harmed by the chemical substances, and the cost of using the plastic cloth is much less than that of using the chemical paint.

Description

[0001] The invention belongs to the application field where protective measures such as rust prevention and corrosion prevention are required on the surface of metal objects.

[0002] Nowadays, metal objects that are in contact with the atmosphere and seawater all year round, especially steel hulls and steel buildings, need to be treated with paint for rust and corrosion prevention, so that the steel metal surface can avoid rusting and decaying too quickly, thereby achieving the purpose of extending the service life. However, since the various paints and coatings commonly used today are mostly chemical synthetic substances, they contain VOC (volatile organic compounds), TDI (toluene dichloride), formaldehyde, benzene, xylene, soluble heavy metals and other substances that are harmful to human health, so they will cause serious harm to the health of paint production workers and paint sprayers, and the cost of using paints and coatings for rust and corrosion prevention is also very high.

[0003] The purpose of the present invention is to provide a new process for rust prevention and decoration of metal object surfaces, so as to reduce the large-scale application of paints containing a large amount of harmful chemical substances.

[0004] The object of the present invention is achieved in this way. First, the surface of the metal object (1) to be protected is completely cleaned by removing rust, oil and dirt, so that the surface of the metal object (1) to be protected is clean and spotless. Then, an adhesive with good adhesion and a tape cloth surface (2) having waterproof, moisture-proof, air-proof, moisture-proof, corrosion-resistant, acid- and alkali-resistant properties are used to evenly and densely cover the surface of the metal object (1) to be protected without bubbles or gaps. During the construction, the tape cloth surface (2) is pasted one by one on the clean surface of the metal object (1) vertically or horizontally, and each subsequent tape cloth surface (2) is neatly and parallelly pressed on the edge of the previous tape cloth surface (2) so that the connection between the front and rear tape cloth surfaces (2) does not produce After the first layer of adhesive tape (2) is applied to the entire metal surface (1), a second or even more layers of adhesive tape may be applied as needed, and the final layer of adhesive tape may be applied with adhesive tape printed with a specific color or specific pattern and text, so that the ship and other metal parts after being completely covered can show the appearance expected by the designer, thereby achieving the purpose of decoration. If BOPP plastic film is used to make the adhesive tape (2), the thickness of the plastic film adhesive tape (2) should be greater than 20 microns. On the premise that the plastic film adhesive tape (2) does not feel stiff and the cost increase is not too large, a larger thickness can be pursued to facilitate the construction of the adhesive tape (2) and prevent the adhesive tape (2) from being damaged or broken during the construction.

[0005] Because the surface of the metal object is evenly and densely pasted with one or more layers of tape cloth, preferably a plastic cloth made of BOPP plastic film with a thickness greater than 20 microns. Since the BOPP plastic film itself has good barrier properties, it can block air, moisture, water, and moisture, and has corrosion resistance, acid and alkali resistance and other characteristics. Therefore, the plastic cloth pasted and covered on the surface of the metal object can completely isolate the external atmosphere, seawater and other corrosive substances, thereby achieving the requirements and purposes of rust and corrosion prevention, and this plastic cloth has a longer service life than the paint applied on modern ships. The construction operation of pasting and covering the plastic cloth on the surface of the metal object is simple and easy, and more importantly, it contains much less harmful chemicals than the chemical paints used today, which is so little that it can be ignored, so it can ensure that the workers' bodies are not harmed by chemical substances, and the cost of using this plastic cloth is much less than that of using chemical paints. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 The diagram is a schematic diagram of tightly sticking a plastic sheet (2) on the surface of a metal object (1).

[0007] The present invention is further described below with an embodiment. After the rust, oil and dirt removal work is completed on the hull surface of a ship to be painted, a plastic cloth surface (2) made of BOPP plastic film with a width of 1 meter and a thickness of 60 microns is used for pasting and covering. The pasting is started from one side of the ship's side along the drawn starting line, and it is pasted around the bottom of the ship without interruption, without bubbles, and without gaps to the hull steel plate, and is pasted to the other side of the ship's side. This is to complete the pasting of a piece of plastic cloth, and then it is pressed against and pressed against the edge of the previous piece of plastic cloth (pressing a 1 cm edge). The pasting of the second piece of plastic sheet is also like the previous one, starting from one side of the ship's side, going around the bottom of the ship and sticking to the other side of the ship, and so on, until the entire hull is densely and seamlessly covered with plastic sheet, thus completing the first layer of hull protection layer construction work. Next, the second layer of exterior decorative layer is pasted and covered according to the position in the design using the exterior plastic sheet made of specific colors, patterns and texts required by the design. The construction requirements are the same as the first layer. After completing the second layer of pasting and covering operations, the construction of the entire hull steel plate protective layer and the hull exterior decorative layer is completed.

Claims

1. A process for rust prevention and decoration of metal object surfaces, wherein the metal object surface (1) to be protected is firstly subjected to a comprehensive cleaning treatment, and then a tape cloth surface (2) having waterproof, moisture-proof, air-proof, moisture-proof, corrosion-resistant, acid-alkali-resistant and other properties is pasted one by one on the cleaned metal object surface (1) in a row, either vertically or horizontally. After all the metal object surfaces (1) to be protected are covered with the tape cloth surface (2) in a dense, gap-free and bubble-free manner, the metal object surfaces (1) to be protected are rust-proofed and corrosion-resistant.

2. The method for rust prevention and decoration of metal object surface according to claim 1, characterized in that The adhesive tape surface (2) can be made of a BOPP plastic film with a thickness exceeding 20 microns.

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