KR20200045725A - Manufacturing method of corrugated pad which has anti-rust function and anti static function - Google Patents

Abstract

The present invention relates to a method of manufacturing a rustproof corrugated pad having an antistatic function, which comprises: a liquid rustproof agent generating step (S10) of generating a liquid rustproof agent by mixing and stirring distilled water, octanoic acid, sodium benzoate, and linear alkyl benzene sulfonate; a mixing and stirring step (S20) of generating a mixture by mixing and stirring the liquid rustproof agent with glycerol mono stearate, polypropylene glycol, and a water-soluble acrylic resin; and an impregnation step (S30) of impregnating a corrugated pad with the mixture using an impregnator. Accordingly, the method of manufacturing a rustproof corrugated pad having an antistatic function can prevent dust or fine dust from being generated when an evaporative rustproof agent in the form of water-soluble liquid is used to manufacture a rustproof corrugated pad, can reduce damage to the health of a worker, does not cause air pollution, does not cause environmental pollution since nitrite and amines harmful to the human body as well as benzotriazole harmful to the ecosystem due to low biodegradability thereof and to the human body when coming into contact with the skin are not used, and prevents corrosion of ferrous and non-ferrous metals.

Description

Manufacturing method of anti-corrosive cardboard pad with anti-static function {Manufacturing method of corrugated pad which has anti-rust function and anti static function}

The present invention relates to a method of manufacturing an anti-corrosive corrugated cardboard pad having an anti-static function, in particular, by using an anti-static agent composed of a food additive that is harmless to the human body, to prevent the generation of static electricity when packaging the product, to prevent damage to the packaging parts, and the work of the operator It can increase productivity and increase productivity, does not use nitrite and amines harmful to the human body, has low biodegradability and does not cause environmental pollution because it does not use benzotriazole, which is harmful to the ecosystem and harmful to the human body when inhaled and in contact with skin. The use of a vaporized rust inhibitor made of only liquid and liquid prevents the occurrence of dust or fine dust because the crushing process is not required when mixing and stirring the formation of a vaporizable rust inhibitor and can reduce the health of workers and reduce air pollution. Anti-corrosion corrugated board with excellent anti-static function It relates to a pad method.

With the development of the industry, production of various metal products using ferrous and non-ferrous metals is increasing, but industrial losses due to corrosion and static electricity generated during packaging of these products are increasing.

To prevent corrosion of these metal products, anti-corrosive products such as anti-corrosive materials, grease, paint, etc. are used, vacuum packaging or vaporizable anti-rust paper, anti-rust pads, and vaporizable anti-corrosive films are used.

The corrugated pad is often used as a packaging material to prevent damage caused by mutual contact of parts when exporting automobiles or machinery parts.

Conventional rustproof corrugated cardboard is prepared by mixing a vaporizable rustproofing agent with an adhesive, or by coating a vaporizable rustproofing solution on the surface during corrugated cardboard production.

As a prior art of the conventional anti-corrosion corrugated cardboard, the Republic of Korea Patent Registration No. 10-0809266, "Method of manufacturing vaporizable anti-corrosive cardboard" (Publication date: 2008.03.03), and the Republic of Korea Patent Registration No. 10-1225087, "Waterproof anti-corrosion reinforcement Corrugated cardboard and its manufacturing method "(published date: 2013.01.22) and Republic of Korea Patent Publication No. 10-2012-0079643" corrosion-resistant function cardboard and its manufacturing method "(published date: 2012.07.13) are disclosed.

In the case of the conventional prior art anti-corrosive cardboard, sodium nitrite and benzotriazole are used as vaporizable anti-corrosive agents.

Sodium nitrite is classified as a harmful substance because it can produce nitrosoamine, a carcinogen when inhaled and ingested, and the harmfulness to the human body continues to emerge.

Benzotriazole is a material that does not biodegrade, and is adversely affecting the ecosystem, so it is registered as a REACH (Registration, Evaluation, Authorization & Restriction of Chemicals) regulatory preliminary substance in the EU, and is harmful to the human body when inhaled or in contact with skin. There is a need to limit its use.

In addition, conventional anti-corrosive corrugated cardboard pads do not have anti-static function, and when packaging machine parts, etc., using anti-corrosive corrugated pads, parts are damaged due to static electricity, or unsatisfactory during packaging work by workers. have.

Republic of Korea Registered Patent Publication No. 10-0809266 "Vacuum rustproof corrugated cardboard manufacturing method" (Publication date: 2008.03.03) Republic of Korea Registered Patent Publication No. 10-1225087 "Evaporative waterproof anti-corrosion reinforced corrugated cardboard and its manufacturing method" (announcement date: 2013.01.22) Republic of Korea Patent Publication No. 10-2012-0079643 "corrosion-resistant corrugated cardboard and its manufacturing method" (published date: 2012.07.13)

The object of the present invention is to prevent the damage to the packaging parts by preventing the generation of static electricity when packaging the product by using an antistatic agent composed of a food additive that is harmless to the human body, and it is possible to increase productivity by increasing the workability of workers and nitrite harmful to the human body And no amines, low biodegradability, harmful to the ecosystem, and does not cause environmental pollution by not using benzotriazole, which is harmful to the human body during skin contact and inhalation, and does not cause environmental pollution. When mixing and stirring the formation, the crushing process is not required to prevent the occurrence of dust or fine dust, reduce the health damage to workers, and not cause air pollution, and anti-corrosive cardboard with excellent anti-static function. It is to provide a pad manufacturing method.

In order to achieve the above object, a method of manufacturing an anti-corrosive cardboard pad having an antistatic function according to the present invention includes: forming a liquid anti-rust agent by mixing and stirring distilled water, octanoic acid, sodium benzoate and linear alkylbenzene sulfonate; A mixing and stirring step of forming a mixture by mixing and stirring glycerol mono stearate, polypropylene glycol, and water-soluble acrylic resin in the liquid rust preventive agent; And It characterized in that it comprises an impregnation step of impregnating the mixture to the corrugated pad by the impregnator.

In addition, the mixture is 20 parts by weight to 70 parts by weight of the octanoic acid, 1000 parts by weight to 120 parts by weight of the benzoate, and 20 parts by weight to 70 parts by weight of the linear alkylbenzene sulfonate It is by weight, 10 parts by weight to 50 parts by weight of the glycerol mono stearate, 10 parts by weight to 20 parts by weight of the polypropylene glycol, and 40 parts by weight to 70 parts by weight of the water-soluble acrylic resin .

The method of manufacturing the anti-corrosive corrugated cardboard pad having the electrostatic function of the present invention uses an anti-static agent composed of a food additive that is harmless to the human body to prevent the occurrence of static electricity when packaging the product to prevent damage to the packaging parts and increase the workability of the worker to increase productivity It can be increased, does not use nitrite and amines harmful to the human body, has low biodegradability, is harmful to the ecosystem, and does not cause environmental pollution because it does not use benzotriazole, which is harmful to the human body when it comes in contact with the skin. When mixing and stirring the formation of a vaporizable rust inhibitor using the vaporized rust inhibitor, the crushing process is not required to prevent the occurrence of dust or fine dust, reduce worker's health damage, and not cause air pollution. Corrosion can be prevented.

1 is a process flow chart of a method of manufacturing an anti-corrugated cardboard pad having an antistatic function according to the present invention.
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 the anti-corrosion corrugated cardboard pad manufacturing method of the present invention.

As shown in Figure 1, the anti-corrosive corrugated cardboard pad manufacturing method of the present invention, distilled water, octanoic acid, sodium benzoate and linear alkylbenzene sulfonate (Linear Alkyl Benzene Sulfonate) Mixing and stirring to form a liquid rust inhibitor (S10) to form a liquid rust inhibitor, glycerol mono stearate (Glycerol mono stearate), polypropylene glycol (Polyprophylene Glycol) and water soluble acrylic resin (water soluble acrylic resin) in the liquid rust inhibitor It is composed of a mixing and stirring step (S20) to form a mixture by mixing and stirring, and an impregnation step (S30) of impregnating the mixture with a corrugated pad by an impregnator.

Further, the mixture is 20 parts by weight to 70 parts by weight of octanoic acid, 1000 parts by weight to 120 parts by weight of sodium benzoate, 20 parts by weight to 70 parts by weight of linear alkylbenzene sulfonate, and glycerol with respect to 1000 parts by weight of distilled water. Mono stearate is 10 parts by weight to 50 parts by weight, polypropylene glycol is 10 parts by weight to 20 parts by weight, and water-soluble acrylic resin is composed of 40 parts by weight to 70 parts by weight.

The operation of the method for manufacturing an anti-corrosive cardboard pad having antistatic function according to the above configuration is as follows.

As shown in Figure 1, the liquid rust inhibitor forming step (S10) is 20 parts by weight to 70 parts by weight of octanoic acid, 80 parts by weight to 120 parts by weight of sodium benzoate, and 20 parts by weight to 70 parts by weight of distilled water The negative linear alkylbenzene sulfonate is mixed and stirred to form a vaporizable liquid rust inhibitor composed only of the liquid.

That is, both octanoic acid, sodium benzoate and linear alkylbenzene sulfonate are water-soluble and do not generate dust or fine dust when mixed and stirred in a liquid form, and these are all used as food additives or household detergent ingredients. Harmless

Octanoic acid, sodium benzoate, and linear alkylbenzene sulfonate are used as rust inhibitors. Octanoic acid contributes to the rust prevention of ferrous metals rather than nonferrous metals, and sodium benzoate contributes to the rust prevention of nonferrous metals compared to ferrous metals. And, the linear alkylbenzene sulfonate contributes to the prevention of contact corrosion of ferrous and non-ferrous metals.

As described above, both octanoic acid, sodium benzoate and linear alkylbenzene sulfonate are for anti-corrosion of ferrous and non-ferrous metals, and when formed below the appropriate weight, the rust resistance decreases. It can break the balance and accelerate hearing.

The mixing and stirring step (S20) comprises 10 parts by weight to 50 parts by weight of glycerol mono stearate, and 10 parts by weight to 20 parts by weight of polypropylene glycol with respect to 1000 parts by weight of distilled water in the liquid rust inhibitor formed in the step of forming the rust inhibitor (S10). , 40 parts by weight to 70 parts by weight of water-soluble acrylic resin is mixed and stirred at 80 ℃ temperature to form a mixture.

Polypropylene glycol is made of a liquid form and is a dispersant that enables smooth mixing and stirring when mixing and stirring the liquid rust inhibitor with glycerol mono stearate and water-soluble acrylic resin.

Glycerol mono stearate is an antistatic agent, and when it is lower than the appropriate weight, it cannot prevent static electricity generation, and when it is more than the appropriate weight, it cannot prevent static electricity generation.

The water-soluble acrylic resin has an effect of enhancing the strength of the corrugated pad, and if it is lower than the appropriate weight, the strength of the corrugated pad is poor, and when it is more than the appropriate weight, the impregnation step (S30), which is a post-processing impregnation, is not smooth. do.

In the impregnation step (S30), 20 g of the mixture formed in the mixing and stirring step (S20) per 1 m2 of the corrugated pad is impregnated with the mixture formed in the mixing and stirring step (S20) to prepare an anti-corrosive cardboard pad having an antistatic function.

Each sample was prepared as follows in order to measure the anti-corrosion experiment according to the composition ratio of the anti-corrosive corrugated cardboard pad with anti-static function manufactured by the present invention.

Sample 1

As a liquid rust inhibitor, only 70 g of octanoic acid was used. After mixing 70 g of octanoic acid with 1000 g of distilled water to form a liquid rust inhibitor, 50 g of glycerol mono stearate, 10 g of polypropylene glycol, and 70 g of liquid rust preventive The water-soluble acrylic resin is mixed at high temperature for 20 minutes at a temperature range of 80 ° C. to form a mixture, and an impregnator is used to impregnate the mixture of 20 g in 1 m 2 of a corrugated cardboard pad to prepare an anti-corrosive cardboard pad having an antistatic function.

Sample 2

After mixing and stirring 70 g of octanoic acid and 30 g of linear alkylbenzene sulfonate in 1000 g of distilled water to form a liquid rust inhibitor, 50 g of glycerol mono stearate, 10 g of polypropylene glycol, and 70 g of water soluble acrylic resin The mixture was formed by mixing at a high temperature of 80 ° C. for 20 minutes at a high temperature, and using an impregnator, impregnating the mixture of 20 g into 1 m 2 of a corrugated pad to prepare an anti-corrosive corrugated cardboard pad having an antistatic function.

Sample 3

After mixing and stirring 70 g of octanoic acid and 70 g of linear alkylbenzene sulfonate in 1000 g of distilled water to form a liquid rust inhibitor, 50 g of glycerol mono stearate, 10 g of polypropylene glycol, and 70 g of water soluble acrylic resin The mixture was formed by mixing at a high temperature of 80 ° C. for 20 minutes at a high temperature, and using an impregnator, impregnating the mixture of 20 g into 1 m 2 of a corrugated pad to prepare an anti-corrosive corrugated cardboard pad having an antistatic function.

Sample 4

After mixing and stirring 50 g of octanoic acid and 80 g of sodium benzoate in 1000 g of distilled water to form a liquid rust inhibitor, 50 g of glycerol mono stearate, 10 g of polypropylene glycol, and 70 g of water-soluble acrylic resin were added to the liquid rust inhibitor. The mixture is formed by mixing at high temperature for 80 minutes at a temperature range of 80 ° C., and 20 g of the mixture is impregnated in 1 m 2 of a corrugated pad using an impregnator to prepare an anti-corrosive corrugated cardboard pad having an antistatic function.

Sample 5

After mixing and stirring 70 g of octanoic acid, 120 g of sodium benzoate, and 50 g of linear alkylbenzene sulfonate in 1000 g of distilled water to form a liquid rust inhibitor, 50 g of glycerol mono stearate and 10 g of polypropylene glycol in the liquid rust inhibitor Cole and 70 g of a water-soluble acrylic resin are mixed at high temperature for 20 minutes at a temperature range of 80 ° C. to form a mixture, and by using an impregnator, 20 g of the mixture is impregnated in 1 m of a corrugated pad to prepare an anti-corrosive corrugated cardboard pad having an antistatic function. .

Sample 6

After mixing and stirring 70 g of octanoic acid, 70 g of sodium benzoate, and 20 g of linear alkylbenzene sulfonate in 1000 g of distilled water to form a liquid rust inhibitor, 50 g of glycerol mono stearate and 10 g of polypropylene glycol in the liquid rust inhibitor Cole and 70 g of a water-soluble acrylic resin are mixed at high temperature for 20 minutes at a temperature range of 80 ° C. to form a mixture, and by using an impregnator, 20 g of the mixture is impregnated in 1 m of a corrugated pad to prepare an anti-corrosive corrugated cardboard pad having an antistatic function. .

Sample 7

After mixing and stirring 10 g of octanoic acid, 10 g of sodium benzoate, and 70 g of linear alkylbenzene sulfonate in 1000 g of distilled water to form a liquid rust inhibitor, 50 g of glycerol mono stearate and 10 g of polypropylene glycol in the liquid rust inhibitor Cole and 70 g of a water-soluble acrylic resin are mixed at high temperature for 20 minutes at a temperature range of 80 ° C. to form a mixture, and by using an impregnator, 20 g of the mixture is impregnated in 1 m of a corrugated pad to prepare an anti-corrosive corrugated cardboard pad having an antistatic function. .

Sample 8

After mixing and stirring 10 g of octanoic acid, 60 g of sodium benzoate, and 50 g of linear alkylbenzene sulfonate in 1000 g of distilled water to form a liquid rust inhibitor, 50 g of glycerol mono stearate and 10 g of polypropylene glycol in the liquid rust inhibitor Cole and 70 g of a water-soluble acrylic resin are mixed at high temperature for 20 minutes at a temperature range of 80 ° C. to form a mixture, and by using an impregnator, 20 g of the mixture is impregnated in 1 m of a corrugated pad to prepare an anti-corrosive corrugated cardboard pad having an antistatic function. .

Table 1 below shows the results of the anti-corrosion experiments of the anti-corrosive cardboard pads according to Samples 1 to 8.

Sample film / metal type Carbon steel Copper brass aluminum Sample 1 ○ Ⅹ Ⅹ Ⅹ Sample 2 ○ Ⅹ Ⅹ Ⅹ Sample 3 ○ △ △ △ Sample 4 △ △ △ △ Sample 5 ○ ○ ○ ○ Sample 6 ○ △ △ ○ Sample 7 △ △ △ △ Sample 8 △ △ ○ ○

○: no rust, Ⅹ: rust, △: within 5%

The anti-corrosion experiments shown in Table 1 are each of carbon steel, copper, brass, and aluminum packaged with anti-corrosive cardboard pads made of samples 1 to 8 of 8 cmx10 cm each by using 30 ml of distilled water in a 1000 ml beaker and using lucite. It is a result of observing whether the metal specimens are rusted after 12 cycles of experiments by inserting the metal specimens, sealing the inlet, and 8 cycles of 1 hour at room temperature of 21 ° C to 25 ° C at 40 ° C for 16 hours.

As can be seen from Table 1, in the case of the anti-corrosive cardboard pads of Sample 1 and Sample 2, the anti-corrosive effect was good for carbon steel, but it was found that there was no anti-corrosive effect for non-ferrous metals, and for Sample 3, the anti-corrosive effect was good for carbon steel, but non-ferrous metal It can be seen that the class has a slight anti-corrosive effect, and the sample 4 has a slight anti-corrosive effect on all metals.

It can be seen that Sample 5 has excellent anti-corrosive effect on all metals.

In the case of Sample 6, carbon steel and aluminum have excellent anti-corrosive effects, but copper and brass have some anti-corrosive effects, and in Sample 7, it can be seen that there are some anti-corrosive effects for all metals. It can be seen that although aluminum has excellent anti-corrosive effect, carbon steel and copper have some anti-corrosive effect.

Therefore, it can be seen that the anti-corrosive cardboard pad of Sample 5 prepared according to the present invention is excellent in anti-corrosive effects when used in ferrous and non-ferrous metals.

The following Table 2 shows the comparison results for the anti-corrosion experiments on mild steel using the anti-corrosive cardboard pads produced by Samples 1 to 8.

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

In the anti-corrosion experiment shown in Table 2, each anti-corrosive cardboard pad of Samples 1 to 8 was cut to a size of 2.5 cmx15 cm, and two anti-corrosive cardboard pads were mounted on a 1000 ml Erlenmeyer flask, and a mild steel specimen was placed on a rubber stopper. After assembling and leaving at room temperature of 21 ° C to 25 ° C for 20 hours, 10 ml of a solution of glycerol (GLYCEROL) and distilled water mixed at a ratio of 1: 2 was added, and after 2 hours, placed in a 40 ° C incubator, after 2 hours elapsed. It is the result of observing the rust.

In Table 2, the anti-corrosive cardboard pads of Sample 1, Sample 2, Sample 3, Sample 5, and Sample 6 are all grade 3 with rust generation grade, and Sample 4 and Sample 7 are all grade 1 with rust generation grade, Sample 8 can be seen that the rust generation grade is grade 2.

That is, as shown in the rust generation grade table showing the degree of corrosion according to the rust generation grade in FIG. 2, the rust generation grade 0 means a grade when corrosion of 30% or more occurs, and the grade 1 is 5 ∼30% means the grade when corrosion occurs, Grade 2 means the grade when corrosion occurs below 5%, and Grade 3 means the grade when corrosion does not occur at all.

Therefore, it can be seen that the rust generation grade of the anti-corrosive cardboard pad of Sample 5 prepared according to the present invention is 3, and no corrosion occurs even in mild steel having a carbon content of less than 0.3%.

The following Table 3 shows the comparison results of the anti-corrosion experiments on carbon steel using the anti-corrosive corrugated pads of Samples 1 to 8.

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

In the anti-corrosion experiment shown in Table 3, each anti-corrosive cardboard pad of Samples 1 to 8 was cut to a size of 2.5 cm x 15 cm, and two anti-corrosive cardboard pads were mounted on a 1000 ml Erlenmeyer flask, and the carbon steel specimen (DIN EN-10025) was rubberized. Assembled to a stopper, left at room temperature of 21 ° C to 25 ° C for 20 hours, put 10 ml of a solution of glycerol (GLYCEROL) and distilled water in a 1: 2 ratio, put into a thermostat at 40 ° C after 2 hours, and after 2 hours elapse It is the result of observing whether rusting occurred.

In Table 3, the anti-corrosive cardboard pads of Sample 1, Sample 2, Sample 3, Sample 5, and Sample 6 all have a rust-producing grade of Grade 3, and the anti-corrosive cardboard pad of Sample 4 has a rust-producing grade of Grade 2, Sample 7 and It can be seen that the anti-corrosive cardboard pad of Sample 8 had a rust generation grade of Grade 1.

Therefore, the corrosion-resistant corrugated pad of Sample 5 prepared according to the present invention does not cause any corrosion even in carbon steel.

The following table 4 is the surface resistance measurement value measured by the portable surface resistance meter SURPA-385 according to the different temperature and humidity for the anti-corrosive cardboard pad of Sample 5. The measurement unit is ohm / square.

In general, materials for the prevention and protection of static electricity are classified into anti-static, static dissipative, and conductive according to the surface resistance value in the range of conductivity against electric charges. Anti-Static products have a surface resistance of 10 ⁹ ohm / square or higher, and no static electricity is generated.Static Dissipative products have a surface resistance of 10 ⁶ ∼10 ⁹ ohm / square and no initial electronic charge. Discharge can be prevented from human contact, and conductive products have a surface resistance of 10 ³ ∼ 10 ⁶ ohm / square and do not play a role in preventing static electricity.

Temperature Humidity 30% 50% 10 ℃ 10 ¹² ohm / square 10 ¹¹ ohm / square 15 ℃ 10 ¹² ohm / square 10 ¹¹ ohm / square 20 ℃ 10 ¹² ohm / square 10 ¹¹ ohm / square 25 ℃ 10 ¹¹ ohm / square 10 ¹¹ ohm / square 30 ℃ 10 ¹¹ ohm / square 10 ¹¹ ohm / square 35 ℃ 10 ¹¹ ohm / square 10 ¹¹ ohm / square 40 ℃ 10 ¹¹ ohm / square 10 ¹¹ ohm / square 45 ℃ 10 ¹¹ ohm / square 10 ¹¹ ohm / square

The surface resistance value for each anti-corrosive corrugated pad of Sample 5 is 10 ¹¹ ohm / square or 10 ¹² ohm / square for the anti-corrugated cardboard pad, and has a uniform surface resistance under various temperature and humidity. You can check ...

As can be seen from the anti-corrosion experiments and surface resistance measurement experiments according to Tables 1 to 4 as described above, octanoic acid and sodium benzoate and linear alkylbenzene without using nitrite, amines or benzotriazole harmful to the human body according to the present invention The anticorrosive corrugated pad of Sample 5 using a liquid rust inhibitor mixed with sulfonate at an appropriate ratio has excellent anti-corrosive power to iron and non-ferrous metals, and it can be seen that the antistatic function is uniform.

Claims (2)

A liquid antirust agent forming step (S10) of mixing and stirring distilled water, octanoic acid, sodium benzoate and linear alkylbenzene sulfonate to form a liquid antirust agent;
Mixing and stirring step of forming a mixture by mixing and stirring the glycerol mono stearate, polypropylene glycol and water-soluble acrylic resin in the liquid rust preventive agent (S20); And
A method of manufacturing a rustproof corrugated cardboard pad having an antistatic function, characterized in that it comprises an impregnation step (S30) of impregnating the mixture into a corrugated cardboard pad by an impregnator.
The mixture of claim 1, wherein the mixture is 20 parts by weight to 70 parts by weight of octanoic acid, 1000 parts by weight to 120 parts by weight of the benzoate, and 20 parts by weight of the linear alkylbenzene sulfonate The weight is 70 parts by weight, the glycerol mono stearate is 10 parts by weight to 50 parts by weight, the polypropylene glycol is 10 parts by weight to 20 parts by weight, and the water-soluble acrylic resin is 40 parts by weight to 70 parts by weight Anti-corrosion corrugated cardboard pad manufacturing method, characterized in that the anti-static function.

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