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Antirust film is the abbreviation of VCI antirust film, which is a new generation of innovative high-tech products based on the combination of polymer materials and VCI gas phase antirust technology development. After the rust-proof metal articles are packed and sealed with antirust film (which can also be made into various plastic bag shapes), the VCI contained in the film body starts to sublimate and volatilize the antirust gas factor, which diffuses and penetrates into the surface of the rust-proof articles and adsorbs onto them, forming a single-molecule-thick, dense protective film layer, which seals off the contact between the factors inducing rust and the surface of the rust-proof articles, thus effectively preventing the generation of rust and corrosion.
At present, there are two main methods for the production process of antirust films, namely, the coated method and the blow molding method. Coated rustproof film is made of polyethylene, polypropylene or other plastic film as a carrier, and the coating solution, which is a homogeneous mixture of adhesive, vapor-phase antirust agent and solvent, is coated on the surface of the surface-treated film, which is then dried to obtain rustproof film.
1. Advantages and disadvantages of using the coating process to produce antirust films
(1) Main Advantages
(1) During the production process, the vapor phase antirust agent is not subjected to high-temperature treatment, and it is easy to obtain excellent antirust effect because of the wide range of choices.
(2) Pre-anti-corrosion is good. The antirust agent exists in the surface coating of the antirust film, and it can be volatilized into the space of the package relatively quickly to show the antirust effect.
(iii) The production process is relatively simple.
(2) Main disadvantages
¢Ù Poor uniformity of appearance and usually poor transparency.
(¢Ú The coating is easily rubbed off.
(iii) Solvent drying consumes energy and may pollute the environment.
¢ÛSolvent drying consumes energy and may cause pollution to the environment. ¢ÜPlastic film must be used as raw material, and the production process is long.
2. Example of coated antirust plastic film
Take LDPE film as the base material, coat the surface with arabic resin glue solution containing vapor phase corrosion inhibitor, and remove the solvent after drying, that is, to obtain the vapor phase antirust film. Formulation of formaldehyde is arabic resin glue "firm film agent" and mildew agent, cyclic amine laurate is a corrosion inhibitor, but also surfactants, LDPE film has good wettability, and can reduce the surface effectiveness of the arabic resin glue, improve the adhesion between the resin glue solution and LDPE film. The combination of cyclic amine laurate and glycolamine benzoate can prevent the precipitation of the additives and form a uniform coating. The antirust film has good antirust and corrosion effects on steel, aluminum and aluminum alloy, copper. Add a certain proportion of VCI masterbatch after blowing the production of LDPE or HDPE plastic film, VCI carrier for the plastic film, VCI will be released from the film body in the appropriate space continuously and slowly in a relatively confined space to form a saturated gas layer, so as to form an antirust protection for the metal materials in the environment. The varieties of antirust film include: general antirust film, antirust winding film, antirust embossed film, antirust heat shrinkable film, antirust bubble film, antirust anti-static film, etc., and different VCI grades are used for different metals.
Nanjing Suminoe Precision Machinery Co., Ltd. specializes in the production of release paper coating machine, the company is committed to creating a coating machine production line with uniform coating, high flatness and cleanliness. The company mainly operates coating machine production lines such as release paper coating machine, optical film coating machine, automotive heat insulation film coating machine, water treatment film coating machine, aluminum foil coating machine, dimming glass coating machine, film coating machine, PDLC dimming film coating machine, lithium battery extrusion coating machine, laboratory lithium coating machine and so on.
Translated with DeepL.com (free version)
At present, there are two main methods for the production process of antirust films, namely, the coated method and the blow molding method. Coated rustproof film is made of polyethylene, polypropylene or other plastic film as a carrier, and the coating solution, which is a homogeneous mixture of adhesive, vapor-phase antirust agent and solvent, is coated on the surface of the surface-treated film, which is then dried to obtain rustproof film.
1. Advantages and disadvantages of using the coating process to produce antirust films
(1) Main Advantages
(1) During the production process, the vapor phase antirust agent is not subjected to high-temperature treatment, and it is easy to obtain excellent antirust effect because of the wide range of choices.
(2) Pre-anti-corrosion is good. The antirust agent exists in the surface coating of the antirust film, and it can be volatilized into the space of the package relatively quickly to show the antirust effect.
(iii) The production process is relatively simple.
(2) Main disadvantages
¢Ù Poor uniformity of appearance and usually poor transparency.
(¢Ú The coating is easily rubbed off.
(iii) Solvent drying consumes energy and may pollute the environment.
¢ÛSolvent drying consumes energy and may cause pollution to the environment. ¢ÜPlastic film must be used as raw material, and the production process is long.
2. Example of coated antirust plastic film
Take LDPE film as the base material, coat the surface with arabic resin glue solution containing vapor phase corrosion inhibitor, and remove the solvent after drying, that is, to obtain the vapor phase antirust film. Formulation of formaldehyde is arabic resin glue "firm film agent" and mildew agent, cyclic amine laurate is a corrosion inhibitor, but also surfactants, LDPE film has good wettability, and can reduce the surface effectiveness of the arabic resin glue, improve the adhesion between the resin glue solution and LDPE film. The combination of cyclic amine laurate and glycolamine benzoate can prevent the precipitation of the additives and form a uniform coating. The antirust film has good antirust and corrosion effects on steel, aluminum and aluminum alloy, copper. Add a certain proportion of VCI masterbatch after blowing the production of LDPE or HDPE plastic film, VCI carrier for the plastic film, VCI will be released from the film body in the appropriate space continuously and slowly in a relatively confined space to form a saturated gas layer, so as to form an antirust protection for the metal materials in the environment. The varieties of antirust film include: general antirust film, antirust winding film, antirust embossed film, antirust heat shrinkable film, antirust bubble film, antirust anti-static film, etc., and different VCI grades are used for different metals.
Nanjing Suminoe Precision Machinery Co., Ltd. specializes in the production of release paper coating machine, the company is committed to creating a coating machine production line with uniform coating, high flatness and cleanliness. The company mainly operates coating machine production lines such as release paper coating machine, optical film coating machine, automotive heat insulation film coating machine, water treatment film coating machine, aluminum foil coating machine, dimming glass coating machine, film coating machine, PDLC dimming film coating machine, lithium battery extrusion coating machine, laboratory lithium coating machine and so on.
Translated with DeepL.com (free version)