KR20190141047A - manufacturing method of volatile corrosion inhibitor film - Google Patents

Abstract

An evaporative rust-proof film manufacturing method of the present invention comprises: a first mixture stirring step (S10) of forming a first mixture by pulverizing each of sodium benzoate, hydroquinone, potassium sorbate, and zinc oxide and then mixing and stirring octanoic acid with the pulverized sodium benzoate, hydroquinone, potassium sorbate, and zinc oxide; a second mixture stirring step (S20) of forming a second mixture by mixing and stirring silicon dioxide (SiO_2), polyethylene wax, zinc stearate, and polyethylene resin with the first mixture; and an extruding step (S30) of extruding the second mixture by a film extruder. The present invention has excellent rust-proof properties without causing environmental pollution.

Description

Manufacturing method of volatile corrosion inhibitor film

The present invention relates to a method for producing a vaporizable rustproof film, in particular to the human body by using a vaporizing rust inhibitor, an antioxidant and a negative electrode inhibitor made of food additives or food extracts without using benzotriazole harmful to the human body when inhaled or skin contact The present invention relates to a vaporizing antirust film manufacturing method which is safe even when contacted, does not cause environmental pollution, and has excellent rust prevention function.

As the metal industry develops, sales of metal products such as iron or nonferrous metals are increasing, and these metal products are packaged and stored or transported. When transporting or storing metal products, the metal products are easy to cause corrosion, and industrial losses are increasing.

In order to prevent the occurrence of corrosion of these metal products, oil, grease, paint was used, the metal products were vacuum packed, or vaporized rust preventive film was used.

Conventional vaporized rust preventive film is manufactured by mixing and extruding a vaporizable rust preventive agent and polyethylene resin, when packaging the metal products using such vaporized rust preventive film can prevent the rust of the metal product without the application of grease or rust preventive oil, Even hard-to-coated metal products can be rust-proof even through tiny gaps that cannot be treated with ordinary rust inhibitors due to the penetration of vaporized gas into the interior.

The prior art of such a vaporizable rustproof film, Korean Patent No. 10-0986695 "Biochemically decomposable vaporizing anti-rust film manufacturing method" (Registration Date: 2010.10.04), Republic of Korea Patent No. 10-1220879 "Silver, copper and Biochemically degradable vaporizable antirust film manufacturing method for aluminum products "(registration date: 2013.010.04) and Republic of Korea Patent No. 10-0598152" vaporable antirust film and its manufacturing method "(registration date: June 30, 2006), Republic of Korea Patent Publication No. 10-2016-0022547 discloses a vaporizable antirust film and a method of manufacturing the same (published date: 2016.03.02).

In the conventional prior art vaporizable rust preventive film, although benzotriazol is used as a rust inhibitor for vaporizable rust preventive, benzotriazole is a material that does not occur biodegradation, and continues to be harmful to the environment. This includes substances registered as EU REACH Regulation, Evaluation, Authorization & Restriction of Chemicals. There is a need to limit the use of benzotriazole as it is harmful to humans by inhalation or in contact with skin.

Republic of Korea Patent No. 10-0986695 "Biochemically decomposable vaporizing anti-rust film manufacturing method" (Registration Date: 2010.10.04) Republic of Korea Patent No. 10-1220879 "Manufacturing method for biodegradable vaporizable antirust film for silver, copper and aluminum products" (Registration date: 2013.010.04) Republic of Korea Registered Patent No. 10-0598152 "Vaporizable antirust film and its manufacturing method" (Registration Date: 2006.06.30) Korean Unexamined Patent Publication No. 10-2016-0022547 "Vaporizable antirust film and its manufacturing method" (published date: 2016.03.02)

It is an object of the present invention to be safe in contact with the human body without using benzotriazole, which is harmful to the environment and human body, and by using a vaporizing rust inhibitor, an antioxidant and a negative electrode inhibitor composed of food additives or food extracts, without causing environmental pollution. In addition, the present invention provides a vaporizing antirust film manufacturing method having excellent rust prevention function.

In order to achieve the above object, the vaporizing antirust film production method of the present invention, in the vaporization antirust film production method for preventing the corrosion of iron or non-ferrous metals, A first mixing and stirring step of pulverizing sodium benzoate, hydroquinone, potassium sorbate and zinc oxide, respectively, followed by mixing and stirring the ground sodium benzoate, hydroquinone, potassium sorbate, zinc oxide and octanoic acid to form a first mixture; A second mixing and stirring step of mixing and stirring silicon dioxide, polyethylene wax, zinc stearate and polyethylene resin to the first mixture to form a second mixture: and And extruding the second mixture by a film extruder.

In addition, the second mixture is based on 1000 parts by weight of the polyethylene resin, the sodium benzoate is 180 parts by weight to 220 parts by weight, the hydroquinone is 80 parts by weight to 120 parts by weight, and the potassium sorbate is 80 parts by weight to 120 By weight, the zinc oxide is 40 parts by weight to 60 parts by weight, the octanoic acid is 80 parts by weight to 120 parts by weight, the silicon dioxide is 40 parts by weight to 60 parts by weight, and the polyethylene wax is 120 parts by weight to 180 parts by weight, the zinc stearate is characterized in that 120 to 180 parts by weight.

The vaporizing antirust film manufacturing method of the present invention uses a vaporizing antirust agent, an antioxidant, and a negative electrode inhibitor composed of food additives or food extracts to prepare a vaporizable antirust film and does not use benzotriazole which is harmful to the environment and human body. It is safe to contact, it does not cause environmental pollution, and can prevent the corrosion of ferrous and nonferrous metals.

1 is a process flowchart of a method for manufacturing a vaporizable antirust film of the present invention.
Figure 2 is a rust generation grade table showing the degree of corrosion according to the rust generation grade for mild steel and carbon steel.

Hereinafter, with reference to the accompanying drawings will be described in detail a method of manufacturing a vaporizable rustproof film of the present invention.

As shown in Figure 1, the vaporizing anti-corrosive film production method of the present invention is pulverized after grinding sodium benzoate (Sodium Benzoate), hydroquinone (Hydroquinone), potassium sorbate (Potassium Sorbate) and zinc oxide (Zinc Oxide), respectively Sodium benzoate, hydroquinone, potassium sorbate, and a first mixed stirring step (S10) of mixing and stirring zinc oxide and octanoic acid to form a first mixture, and silicon dioxide (SiO ₂ ), polyethylene in the first mixture A second mixing and stirring step (S20) of mixing and stirring a wax (Zinc Stearate) and a polyethylene resin (Polyethylene Resin) to form a second mixture, and extruding the second mixture by a film extruder. It consists of an extrusion step (S30).

In addition, the second mixture is 180 parts by weight to 220 parts by weight of sodium benzoate, 80 parts by weight to 120 parts by weight, and 80 parts by weight to 80 parts by weight of potassium sorbate, based on 1000 parts by weight of polyethylene resin, Zinc oxide is 40 to 60 parts by weight, octanoic acid is 80 to 120 parts by weight, silicon dioxide is 40 to 60 parts by weight, the polyethylene wax is 120 to 180 parts by weight, stearic acid Zinc is comprised of 120 parts by weight to 180 parts by weight.

The operation of the present invention vaporizing antirust film production method according to the above configuration is as follows.

As shown in FIG. 1, the first mixing and stirring step S10 includes 180 parts by weight to 220 parts by weight of sodium benzoate, 80 parts by weight to 120 parts by weight of hydroquinone, and 80 parts by weight to 120 with respect to 1000 parts by weight of polyethylene resin. By weight of potassium sorbate, 40 to 60 parts by weight of zinc oxide is pulverized from 200 mesh to 350 mesh, pulverized sodium benzoate, hydroquinone, potassium sorbate, zinc oxide and octanoic acid To form a first mixture.

The sodium benzoate, hydroquinone, potassium sorbate, zinc oxide and octanoic acid are all harmless to the human body as food additives or food extracts.

Sodium benzoate and octanoic acid are used as vaporizing rust preventive agents, sodium benzoate contributes to the rust prevention of nonferrous metals relative to ferrous metals, octanoic acid contributes to the rust prevention of ferrous metals relative to nonferrous metals.

Hydroquinone and potassium sorbate are used as antioxidants to block the oxidation reaction, hydroquinone contributes to the rust prevention of nonferrous metals relative to ferrous metals, potassium sorbate contributes to the rust prevention of nonferrous metals and ferrous metals, in particular sorbic acid Potassium also has a function of absorbing oxygen, and zinc oxide is used as a negative electrode inhibitor to prevent corrosion and contributes to rust prevention of nonferrous metals relative to ferrous metals.

That is, sodium benzoate, hydroquinone, potassium sorbate, zinc oxide and octanoic acid composed of the first mixture are all for the rust prevention of iron or nonferrous metals. In larger cases, the balance of rust resistance may be broken, and rusting may occur.

The second mixing and stirring step (S20) is 40 parts by weight to 60 parts by weight of silicon dioxide, 120 parts by weight to 180 parts by weight of polyethylene wax, and 120 parts by weight to 180 to 1000 parts by weight of polyethylene resin in the first mixture configured as described above. A weight mixture of zinc stearate and polyethylene resin are mixed to form a second mixture.

Silicon dioxide is a moisture absorbent that absorbs moisture. When the moisture absorbent is larger than the proper weight, the silicon dioxide weakens the physical properties of the vaporizable rustproof film.

Polyethylene wax is an emulsifier, and when it is lower than the appropriate weight, the first mixture and the polyethylene resin are not smoothly mixed. When the polyethylene wax is larger than the appropriate weight, the vaporizable rust preventive film is too flexible, so that the bursting strength or tensile strength is good. I can't.

Zinc stearate is used as a dispersant to smoothly mix and stir the first mixture and the second mixture.

Extrusion step (S30) by extruding the second mixture to a thickness of approximately 0.1mm in a temperature range of 170 ℃ to 190 ℃ using a film extruder by a conventional method to produce a vaporizable rustproof film.

In order to measure the antirust test according to the composition ratio of the vaporizable antirust film prepared by the present invention, each sample was prepared as follows.

Sample 1

Using only 200 g of sodium benzoate as the first mixture, pulverized 200 g of sodium benzoate, 150 g of polyethylene wax, 150 g of zinc stearate, and 1000 g of polyethylene resin were mixed at a high temperature of 50 ° C. for 10 minutes at a high speed to stir the second mixture. After forming, the second mixture is extruded to a thickness of approximately 0.1 mm in a temperature range of 170 ° C. to 190 ° C. using a film extruder to prepare a vaporizable rustproof film of Sample 1.

Sample 2

200 g of sodium benzoate and 100 g of octanoic acid were used as the first mixture. The ground mixture was stirred by stirring 200 g of sodium benzoate and 100 g of octanoic acid, and then 150 g of polyethylene wax and 150 g of stearic acid were added to the first mixture. Zinc and 1000 g of polyethylene resin were mixed at high temperature for 50 minutes at a high speed for 10 minutes to form a second mixture, and the second mixture was extruded to a thickness of approximately 0.1 mm in a temperature range of 170 to 190 ° C. using a film extruder. To prepare a vaporizable antirust film of Sample 2.

Sample 3

200 g of sodium benzoate and 100 g of octanoic acid were used as the first mixture, and 50 g of silicon dioxide was added to the second mixture. Then, the ground 200 g of sodium benzoate and 100 g of octanoic acid were stirred to form a first mixture. 50 g of silicon dioxide, 150 g of polyethylene wax, 150 g of zinc stearate, and 1000 g of polyethylene resin were mixed at high temperature in a temperature range of 50 ° C. for 10 minutes to form a second mixture in the first mixture to form a second mixture. This was extruded to a thickness of approximately 0.1mm in the temperature range of 170 ℃ to 190 ℃ using a film extruder to prepare a vaporizable rustproof film of Sample 3.

Sample 4

100 g of hydroquinone and 100 g of potassium sorbate were used as the first mixture, and 50 g of silicon dioxide was added to the second mixture. The pulverized 100 g of hydroquinone and 100 g of potassium sorbate were stirred to form a first mixture. Thereafter, 50 g of silicon dioxide, 150 g of polyethylene wax, 150 g of zinc stearate, and 1000 g of polyethylene resin were mixed at high temperature in a temperature range of 50 ° C. for 10 minutes in a first mixture to form a second mixture. The second mixture is extruded to a thickness of approximately 0.1 mm in a temperature range of 170 ° C. to 190 ° C. using a film extruder to prepare a vaporizable rustproof film of Sample 4.

Sample 5

50 g of zinc oxide was added to the second mixture, and 50 g of silicon dioxide was added to the second mixture, and 50 g of silicon dioxide, 50 g of silicon dioxide, 150 g of polyethylene wax, and 150 g of stearic acid were used. Zinc and 1000 g of polyethylene resin were mixed at a high temperature of 50 ° C. for 10 minutes at high speed to form a second mixture, and the second mixture was formed to a thickness of approximately 0.1 mm at a temperature of 170 ° C. to 190 ° C. using a film extruder. Extrusion to prepare a vaporizable rust preventive film of Sample 5.

Sample 6

200 g of sodium benzoate, 100 g of hydroquinone and 100 g of potassium sorbate were used as the first mixture, and 50 g of silicon dioxide was added to the second mixture. 200 g of sodium benzoate, 100 g of hydroquinone and 100 g of sorbic acid were added. After stirring the potassium to form the first mixture, the first mixture was rapidly mixed with 50 g of silicon dioxide, 150 g of polyethylene wax, 150 g of zinc stearate, and 1000 g of polyethylene resin in a temperature range of 50 ° C. for 10 minutes. The second mixture was stirred to form a second mixture, and the second mixture was extruded to a thickness of approximately 0.1 mm in a temperature range of 170 ° C. to 190 ° C. using a film extruder to prepare a vaporizable rustproof film of Sample 6.

Sample 7

200 g of sodium benzoate and 50 g of zinc oxide as a negative electrode inhibitor were used as the first mixture, and 50 g of silicon dioxide was added to the second mixture. The ground mixture was stirred with 200 g of sodium benzoate and 50 g of zinc oxide to form a first mixture. Thereafter, 50 g of silicon dioxide, 150 g of polyethylene wax, 150 g of zinc stearate, and 1000 g of polyethylene resin were mixed at high temperature in a temperature range of 50 ° C. for 10 minutes in a first mixture to form a second mixture. The second mixture was extruded to a thickness of approximately 0.1 mm using a film extruder in a temperature range of 170 ° C. to 190 ° C. to prepare a vaporizable rustproof film of Sample 7.

Sample 8

As the first mixture, 200 g of sodium benzoate, 100 g of hydroquinone as antioxidant, 100 g of potassium sorbate and 50 g of zinc oxide as negative electrode inhibitor were used, and 50 g of silicon dioxide was added to the second mixture. Hydroquinone and 100 g of potassium sorbate and 50 g of zinc oxide were stirred to form a first mixture, followed by 50 g of silicon dioxide, 150 g of polyethylene wax, 150 g of zinc stearate, and 1000 g of polyethylene in the first mixture. The resin was rapidly mixed and stirred for 10 minutes at a temperature range of 50 ° C. to form a second mixture, and the second mixture was extruded to a thickness of approximately 0.1 mm at a temperature range of 170 ° C. to 190 ° C. using a film extruder to vaporize the sample 8. The antirust film is manufactured.

Sample 9

As the first mixture, 200 g of sodium benzoate, 100 g of octanoic acid, 100 g of hydroquinone as an antioxidant, 100 g of potassium sorbate, and 50 g of zinc oxide as a negative electrode inhibitor were used. After stirring 50 g of zinc oxide and 100 g of octanoic acid to form a first mixture, 150 g of polyethylene wax, 150 g of zinc stearate, and 1000 g of polyethylene resin were stirred for 10 minutes in a temperature range of 50 ° C. in the first mixture. The mixture was stirred at high speed to form a second mixture, and the second mixture was extruded to a thickness of approximately 0.1 mm in a temperature range of 170 ° C. to 190 ° C. using a film extruder to prepare a vaporizable rust preventive film of Sample 9.

Sample 10

200 g of crushed 200 g of sodium benzoate, 100 g of octanoic acid, 100 g of hydroquinone as antioxidant, 100 g of potassium sorbate, and 50 g of zinc oxide as negative electrode inhibitor were added, and 50 g of silicon dioxide was added to the second mixture. Sodium benzoate, 100 g of hydroquinone, 100 g of potassium sorbate, 50 g of zinc oxide, and 100 g of octanoic acid were stirred to form a first mixture, and then 50 g of silicon dioxide, 150 g of polyethylene wax, 150 g of the first mixture. Zinc stearate and 1000 g of polyethylene resin were rapidly mixed and stirred at a temperature range of 50 ° C. for 10 minutes to form a second mixture, and the second mixture was approximately 0.1 at a temperature range of 170 ° C. to 190 ° C. using a film extruder. Extrusion to a thickness of mm to prepare a vaporizable rust preventive film of Sample 10.

Table 1 below shows the comparison results of the rust prevention experiments on various metal specimens using the vaporizable rustproof films according to Samples 1 to 10.

Sample film / metal type Carbon steel Copper Galvanized steel sheet aluminum Sample 1 Ⅹ Ⅹ Ⅹ Ⅹ Sample 2 △ Ⅹ Ⅹ Ⅹ Sample 3 △ Ⅹ Ⅹ Ⅹ Sample 4 Ⅹ △ △ Ⅹ Sample 5 Ⅹ x △ △ Sample 6 Ⅹ △ △ △ Sample 7 Ⅹ △ △ △ Sample 8 Ⅹ ○ ○ ○ Sample 9 △ ○ ○ ○ Sample 10 ○ ○ ○ ○

○: No callout, Ⅹ: Requested, △: Within 5%

In the rust-preparation experiment shown in Table 1, each metal specimen of carbon steel, copper, galvanized steel sheet, and aluminum was sealed-packed with a vaporizable rustproof film according to Samples 1 to 10, and 30 ml of distilled water was added to a 500 ml beaker. Put the metal specimens sealed with Samples 1 to 10 at the site and wrap the beaker inlet with a wrap film to seal it.Then, 8 hours at 40 degrees Celsius, 16 hours at room temperature, 1 cycle, and after 45 cycle experiment on the metal specimens This is the result of observing whether or not rust occurred.

As can be seen in Table 1, in the case of vaporized rustproof film of Sample 1, there is no rust prevention effect for all metals, and in the case of vaporized rustproof films of Samples 2 and 3, there is some anti-rust effect for carbon steel, which is ferrous metals, but not for nonferrous metals. There is no rust prevention effect, and the vaporization rust prevention film of Sample 4 has no rust prevention effect on carbon steel and aluminum, and the vaporization rust prevention film of Sample 5 has no rust prevention effect on carbon steel and copper, and the vaporization rust prevention films of Samples 6 and 7 Except for carbon steel, the other metals have some anti-rust effect, and in case of vaporized antirust film of Sample 8, the anti-rust effect is good for the remaining metals except for carbon steel. Antirust effect is good for the remaining metals, and Sample 10 shows good antirust effect for all metals. It can be seen that out.

Therefore, it can be seen that the vaporizable antirust film prepared according to the present invention is excellent in the antirust effect of iron and nonferrous metals.

Table 2 below shows a comparison result of the antirust test for mild steel using the vaporizable antirust film according to Samples 1 to 10.

Sample film Rust generation grade Sample 1 Grade 0 Sample 2 Grade 2 Sample 3 Grade 2 Sample 4 Grade 0 Sample 5 Grade 0 Sample 6 Grade 0 Sample 7 Grade 0 Sample 8 Grade 0 Sample 9 Grade 2 Sample 10 Grade 3

In the antirust test shown in Table 2, two vaporized antirust films of each of Samples 1 to 10 were mounted in a 1000 ml Erlenmeyer flask, and a soft steel specimen was assembled to a rubber stopper, and left at room temperature for 20 hours. 10 ml of a mixture of glycerol (GLYCEROL) and distilled water at a ratio of 1: 2 was added, and after 2 hours, the result was placed in a thermostat at 40 ° C. and observed for 2 hours.

In Table 2, all of the vaporizable rust preventive films of Samples 1 and 4 to 8 have a rust generation grade of Grade 0, and all of the vaporizable rust preventive films of Samples 2, 3 and 9 have a rust generation grade of Grade 2, and the present invention. It can be seen that the vaporizable antirust film of Sample 10 according to the rust generation grade is Grade 3.

That is, as shown in the rust generation grade table showing the degree of corrosion according to the rust generation grade of FIG. 2, the rust generation grade is grade 0 means the grade when the corrosion occurs more than 30%, grade 1 is 5 It means the grade when ˜30% corrosion occurs, the grade 2 means the grade when the corrosion occurs less than 5%, and the grade 3 means the grade when no corrosion occurs at all.

Therefore, the rusting grade of the vaporizable rustproof film of Sample 10 prepared according to the present invention is 3, and no corrosion occurs in soft metals having a carbon content of less than 0.3%.

Table 3 below shows a comparison result of the antirust test on carbon steel using the vaporizable antirust film according to Samples 1 to 10.

Sample film Rust generation grade Sample 1 Grade 0 Sample 2 Grade 2 Sample 3 Grade 2 Sample 4 Grade 0 Sample 5 Grade 0 Sample 6 Grade 0 Sample 7 Grade 0 Sample 8 Grade 0 Sample 9 Grade 2 Sample 10 Grade 3

In the antirust test shown in Table 3, two vaporizable antirust films of each of Samples 1 to 10 were mounted on a 1000 ml Erlenmeyer flask, and carbon steel specimens (DIN EN-10025) were assembled on a rubber stopper and left at room temperature for 20 hours. After that, put 10 ml of a solution of glycerol (GLYCEROL) and distilled water in a ratio of 1: 2, and after 2 hours, put it in an incubator at a temperature of 40 ° C. and observe whether it was rusted after 2 hours.

In Table 3, all of the vaporizable rust preventive films of Samples 1 and 4 to 8 have a rust generation grade of Grade 0, and all of the vaporizable rust preventive films of Samples 2, 3, and 9 have a rust generation grade of Grade 2, and the present invention. It can be seen that the vaporizable antirust film of Sample 10 according to the rust generation grade is Grade 3.

Therefore, the vaporizable rustproof film of Sample 10 prepared according to the present invention has a rusting grade of 3 when used in carbon steel and no corrosion occurs.

The following Table 4 shows a comparison result of the antirust test for copper and carbon steel by the Craig test method for the vaporizable antirust film according to the samples 1 to 10.

Sample film Copper Carbon steel Sample 1 Ⅹ Ⅹ Sample 2 Ⅹ ○ Sample 3 Ⅹ △ Sample 4 Ⅹ Ⅹ Sample 5 Ⅹ Ⅹ Sample 6 Ⅹ Ⅹ Sample 7 △ Ⅹ Sample 8 △ △ Sample 9 △ ○ Sample 10 ○ ○

○: No callout, Ⅹ: Requested, △: Within 5%

In the antirust test shown in Table 4, a vaporized antirust film (6.5cmx15cm) of Samples 1 to 10 was mounted in a 500ml beaker using lucite, and 30ml of distilled water was sealed and sealed to a thermostat of 60 degrees Celsius. After 40 minutes, remove it, cool it for 30 minutes at room temperature, and then put the copper and carbon steel metal specimens into the lucite in a beaker, put it in a thermostat at 60 degrees Celsius for 1 hour, and leave it for 30 minutes at room temperature. It is a result of observing the occurrence.

As can be seen from Table 4, in the case of the vaporizable rustproof film of Sample 1, Samples 4 to 6, the rust preventive effect is generated in both copper and carbon steel, there is no rust preventive effect, and in the case of the vaporizable rustproof film of Sample 2 and Sample 3 Blue is generated but no carbon steel is produced, and in the case of the vaporized rustproof film of Sample 7, carbon steel is produced but copper is not generated, and Samples 8 to 10 are excellent in both copper and carbon steel. Can be.

However, in the case of the vaporizable rustproof film of Sample 10 prepared according to the present invention, it can be seen that the rustproof effect is superior to copper and carbon steel as compared to the rustproof films of the following samples.

As can be seen by the antirust test according to Tables 1 to 4 as described above, according to the present invention to form a first mixture of sodium benzoate, hydroquinone, potassium sorbate, zinc oxide and octanoic acid, silicon dioxide in the first mixture Vaporized rust preventive film produced by mixing and stirring polyethylene wax, zinc stearate and polyethylene resin to form a second mixture provides excellent anti-rusting property to all metals of iron and nonferrous metals without using benzotriazole, which is harmful to human body. It can be seen that

Claims (2)

In the method of manufacturing a vaporizable rust-proof film to prevent the corrosion of ferrous or non-ferrous metals,
After pulverizing sodium benzoate, hydroquinone, potassium sorbate and zinc oxide, respectively, and mixing and stirring the ground sodium benzoate, hydroquinone, potassium sorbate, zinc oxide and octanoic acid to form a first mixture (S10). );
A second mixing and stirring step (S20) of forming a second mixture by mixing and stirring silicon dioxide, polyethylene wax, zinc stearate and polyethylene resin with the first mixture:
Evaporable anti-rust film production method characterized in that it comprises an extrusion step (S30) for extruding the second mixture by a film extruder.
The method of claim 1, wherein the second mixture is 180 parts by weight to 220 parts by weight of sodium benzoate, 80 parts by weight to 120 parts by weight, and 80 parts by weight of potassium sorbate based on 1000 parts by weight of the polyethylene resin. By weight to 120 parts by weight, the zinc oxide is 40 to 60 parts by weight, the octanoic acid is 80 to 120 parts by weight, the silicon dioxide is 40 to 60 parts by weight, the polyethylene wax is 120 parts by weight to 180 parts by weight, and the zinc stearate is 120 parts by weight to 180 parts by weight.

Images