KR101514960B1 - Trays made of a rust preventing method and a method of manufacturing the tray for rust prevention - Google Patents

Abstract

The present invention relates to a method for manufacturing a tray for rust prevention, the tray being manufactured by using a rust inhibitor, a dispersing agent and plastic materials, wherein rust particles vaporize from the tray and physically and chemically coupled to the metal surface of a product, becoming capable of preventing the corrosion of metals and thereby simply inhibiting the corrosion of metal products caused by exposure to the salt water and humidity.

Description

TECHNICAL FIELD The present invention relates to a method for manufacturing a rustproof tray and a rust preventive tray manufactured by the method,

The present invention relates to a method for producing a tray having excellent rust resistance and antifouling property and a rust preventive tray made using the same, which comprises 40 to 45% by weight of a vapor-proof rust inhibitor, 45 to 55% by weight of a synthetic resin, 5 to 10% To prepare a master batch; Melting and mixing 3 to 4% by weight of the master batch to 96 to 97% by weight of the second synthetic resin; Cooling molding the molten mixed material into a mixing fabric of a certain thickness; And molding the mixed fabric into a molding apparatus. According to the present invention, a tray comprising a vapor-proof rust inhibitor is prepared and exposed to salt water and moisture

It is possible to easily suppress the corrosion of the metal caused by the corrosion.

Generally, a method of adding a rust inhibitive agent to a corrosive environment as a method of protecting a metal product placed in a corrosive environment is common.

The rust preventive property is a property to prevent the formation of a compound containing a hydroxide or an oxide as a main component on a metal surface, and means a property to prevent generation of a spoilage product on a metal surface in a broad sense.

Conventionally, in order to increase the rust prevention efficiency of a metal product, the product to be packaged is wrapped in an anti-rust paper or a rustproof film and then stored in a plastic mold. In this method, an anti-rust paper or a rust-preventive film must be separately manufactured or purchased, and a process of packaging the product with rust-inhibiting paper or rust-preventive film is further required.

Furthermore, when the metal product is packed with the rustproof film, the metal product can not be completely blocked from moisture and air, so that the product is oxidized by moisture and air inside the package during transportation and storage during packaging, .

Therefore, there is a need for a technique capable of effectively preventing corrosion and discoloration of a metal product, and efficiently applying and transporting the metal product.

An object of the present invention is to provide an anti-corrosive tray for preventing corrosion of metals by physically and chemically bonding the anti-corrosive particles to the metal surface of the product by vaporizing the anti-corrosive particles from the tray by preparing a rustproof tray with a rust preventive agent, a dispersant and a plastic material .

Preparing a master batch by mixing 40 to 45 wt% of a vapor-proof rust inhibitor, 45 to 55 wt% of a first synthetic resin, and 5 to 10 wt% of a dispersant; Melting and mixing 3 to 4% by weight of the master batch to 96 to 97% by weight of the second synthetic resin; Cooling molding the molten mixed material into a mixing fabric of a certain thickness; And extrusion-molding the mixed fabric with a forming device.

Further, in the step of melting and mixing, a melting temperature is set to 230 to 250 占 폚.

Here, the extrusion molding is performed at a temperature of 250 to 300 ° C for 5 to 15 seconds.

In this case, the mixing material of the second synthetic resin and the master batch is dehumidified in the melting and mixing step.

Further, the present invention provides a rustproof tray manufactured by the following manufacturing method.

According to the present invention, rust-proof trays are made of rust-preventive agents, dispersants, and plastic materials, and the rust-preventive particles are vaporized from the trays and physically and chemically bonded to the metal surfaces of the products to prevent the generation of rust, It becomes possible to use it when storing and transporting parts which are difficult to use.

Also, since the anti-rusting tray is manufactured in accordance with the standard of the product to be stored and the packaging is simple, it is possible to reduce the time for applying the anti-rust solution or wrapping the anti-rusting film and the rustproofing paper.

FIG. 1 is a flow chart of a method of manufacturing a rustproof tray according to the present invention.
FIG. 2 is a photograph of a metal product inserted into a rustproof tray according to the present invention. FIG.

In order to achieve the above object, in the present invention,

Preparing a master batch by mixing 40 to 45 wt% of a vapor-proof rust inhibitor, 45 to 55 wt% of a first synthetic resin, and 5 to 10 wt% of a dispersant;

Melting and mixing 3 to 4% by weight of the master batch to 96 to 97% by weight of the second synthetic resin;

Cooling molding the molten mixed material into a mixing fabric of a certain thickness; And

And a step of extruding the mixed fabric by a forming device, and a rustproof tray manufactured by the method.

Hereinafter, the configuration will be described in more detail.

The rust inhibitor is a volatile corrosion inhibitor and has a solubility of 1 g / 2 ml (water, 25 ° C.) and a melting point of 396 ° C. Ph. 6.7 (1% solution) and a vapor pressure of 0.01-0.04 mmHg. It is added to prevent auto-oxidation due to the action of oxygen, which is likely to occur in polymer materials. Care should be taken when making masterbatches by mixing ratio and ratio according to compatibility between rust inhibitor and plastic material.

The first and second synthetic resins may be composed of one or more selected from among polypropylene, polyethylene, acrylbutadiene styrene copolymer, polycarbonate, polyamide, and polyethylene terephthalate.

The dispersant is a substance added to prevent agglomeration of fine particles generated when fine particles and agglomerated particles are pulverized into small particles and colloidal particles, and absorbent materials such as surfactants and polymer substances are used.

The masterbatch is prepared by adding 45 to 55% by weight of the first synthetic resin and 5 to 10% by weight of the dispersant in an amount of 40 to 45% by weight based on the total weight of the rust inhibitor.

The rust-preventive material is prepared by mixing 3-4% by weight of the masterbatch and 96-97% by weight of the second synthetic resin. When the moisture is present, the rust-preventive material is dehumidified through a dehumidifier to prevent acid corrosion desirable.

The rust-preventive material after dehumidification is melted by heating at a temperature of 230 to 250 DEG C, and when the temperature is lower than 230 DEG C, the rust-preventive material is difficult to melt. When the rust- It is preferably heated and melted at a temperature of 230 to 250 ° C.

As described above, the mixed material is naturally cooled to a desired thickness according to the tray in which a user stores the product, and the mixed fabric is wound and rolled. In order to form a desired shape by the user, At 300 ° C for 5 to 15 seconds. At this time, when the temperature of the molding machine is lower than 250 ° C, the mixed fabric is difficult to melt, and when the temperature is higher than 300 ° C, it is deformed too quickly, It is preferable to make the shape at a temperature of 250 to 300 ° C. It is also preferable that the molding time varies flexibly depending on the thickness of the mixed fabric.

The tray thus produced is used for transportation and packaging of metal, and the rust inhibitor contained in the tray is vaporized and bonded to the surface of the metal product to form a monomolecular film, thereby preventing corrosion.

Hereinafter, the manufacturing method of the rustproof tray will be described in detail with reference to examples.

Example

45% by weight of polypropylene and 10% by weight of a surfactant were added to 45% by weight of a vapor-proof rust inhibitor, followed by mixing to prepare a masterbatch. 97% by weight of polypropylene was mixed with 3% by weight of the masterbatch, dehumidified through a dehumidifier, The dehumidified rust-preventive material was heated and melted at a temperature of 250 ° C and mixed. The mixed material was naturally cooled to form a mixed fabric, which was then molded through a molding machine at a temperature of 270 ° C for 12 seconds. Spray test was performed. Table 1 below shows the evaluation results of the present invention according to the above mentioned corporation.

end. Purpose of examination

Confirmation of rust prevention effect of anti-rusting tray

I. Test Methods

Three samples of each sample were placed on the rustproofing tray and the existing product container, and the salt water spray test was performed to observe whether or not the sample was brittle

All. Exam conditions

1) Test temperature 35 ℃

2) Salt water concentration 5 ± 1%

3) Salt water specific gravity 1.03

4) Spraying pressure 1.2Kgf / ㎠

5) Saline Ph 6.5 to 7.6

la. Exam contents

During the test, there should be no water ingress due to immersion or water ingress inside the product container in CHAMBER

hemp. sign

○: no rust

◇: Occurrence of white rust

◆: Rust occurrence

Test item type

The
24HR
48HR
72HR
96HR
120HR
144HR
152HR
168HR
192HR
216HR
Rustproof
tray

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Rustic
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Conventional product container

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Rustic
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Claims (5)

Preparing a master batch by mixing 40 to 45 wt% of a vapor-proof rust inhibitor, 45 to 55 wt% of a first synthetic resin, and 5 to 10 wt% of a dispersant;
Melting and mixing 3 to 4% by weight of the master batch to 96 to 97% by weight of the second synthetic resin;
Cooling molding the molten mixed material into a mixing fabric of a certain thickness; And
And extruding the mixed fabric by a molding machine.
The method according to claim 1,
Wherein the melting temperature is in the range of 230 to 250 DEG C in the melting and mixing step.
The method according to claim 1,
Wherein the extrusion molding is performed at a temperature of 250 to 300 캜 for 5 to 15 seconds.
The method according to claim 1,
Wherein the mixing material of the second synthetic resin and the master batch is dehumidified in the melting and mixing step.
A rust-proof tray, characterized in that it is manufactured by the method of any one of claims 1 to 4.

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