KR101085075B1 - Coating composition for improving strength of paper board, paper board manufactured by using the same and fabricating method thereof, internal and external material of construction with the same - Google Patents

Abstract

PURPOSE: A coating composition and an eco-friendly interior/exterior material containing the same are provided to improve the strength of paper. CONSTITUTION: A coating composition for improving the strength of paper contains 15-30 wt% of epoxy resin, 20-30 wt% of melamin resin, 5-15 wt% of acetic acid vinyl resin emulsion adhesive, 4-8 wt% of illite, 3-6 wt% of volatile corrosion inhibitor, 5-9 wt% of flame retardant, 10-20 wt% of methanol, and 15-25 wt% of water. The paper comprises raw paper and the coating composition. A method for preparing the coating composition comprises: a step of applying the coating composition on the outer surface of the paper(S12); a step of curing the coating composition at 120-200°C(S13); and a step of laminating the paper(S14).

Description

COATING COMPOSITION FOR IMPROVING STRENGTH OF PAPER BOARD, PAPER BOARD MANUFACTURED BY USING THE SAME AND FABRICATING METHOD THEREOF, INTERNAL AND EXTERNAL MATERIAL OF CONSTRUCTION WITH THE SAME}

The present invention relates to a paperboard and a method for manufacturing the same, and in detail, a coating composition for improving the strength of a paper board (paper board) manufactured using old paper, a paperboard manufactured using the same, and a manufacturing method thereof, and It relates to environmentally friendly interior and exterior materials, including.

In general, interior and exterior materials are installed outdoors and indoors of a building to decorate the installation space beautifully. These interior and exterior materials are divided into sandwich panels, urethane, and plywood using various materials such as wood, gypsum board, plastic, metal, stone, etc., and separate the interior space into separate spaces or use them as partitions. They contain harmful contaminants, which are harmful to the human body, are vulnerable to fire and are expensive, resulting in higher construction costs. In addition, there is a problem that excellent heat insulation and insulation, but the flammability is strong and the moisture-proof, soundproofing effect is significantly reduced.

In order to solve these problems, there are active researches on building interior and exterior materials that are easy to install and relocate while being natural friendly, excellent in moisture proof and soundproofing effect, light and durable, and not easily burned. For example, Republic of Korea Patent Registration No. 10-0368875 (notice date: 2003.01.24) (hereinafter referred to as prior art) has been proposed.

The prior art provides a building interior and exterior materials using waste paper (paper). Specifically, the waste paper is collected, coated with a water-soluble bond, compressed into a rigid roll shape, and then formed into a space in a roll-shaped body wound in one direction, and both ends are integrally fitted with a circular cap made of metal to support each other. To provide interior and exterior building materials having a configuration.

This prior art uses a recyclable highland and is used as a wall or ceiling structure in warehouses, factories, buildings, offices, etc., which enables efficient recycling of resources and is environmentally friendly. In addition, the soundproofing and moisture-proof effect is excellent, there is a relatively light and solid advantage. In addition, there is an advantage that the fire resistance is not burned, and easy to install and move.

Building interior and exterior materials using such highland may cause secondary environmental pollution due to harmful pollutants contained in the highland. Accordingly, in recent years, a method for producing raw paper through a selection process has been proposed to remove harmful contaminants (inks, etc.) contained in the highland.

Looking at the manufacturing process of cardboard, such as corrugated cardboard and white cardboard, the main raw material is as follows.

Looking at the manufacturing process of corrugated paper, that is, liner paper, first, the waste paper used as a paper material is dissociated using a pulper to filter out foreign matter. Then, after the confession is treated the chemicals that give the necessary function, the raw material is mixed with white water and then sprayed. Then, it is pressed in a press, followed by a drying process, a thickness and gloss process, and then a liner paper produced by winding.

White cardboard is composed of multiple layers (upper layer / middle layer / lower layer). The upper layer is made of pulp bleached as a main raw material, and the lower layer is used as a raw material by performing a deoiling process to remove ink particles contained in newspaper. That is, the white layer, which is a lower layer, is used as a raw material after a predetermined process using a product box or agricultural product box as a main raw material and exhibits a tendency of a multilayer structure. In addition, the intermediate layer is used as a raw material by performing a fine process of the fine fibers of the upper layer.

The liner paper manufactured as described above mainly consists of corrugated paper made of surface paper and back paper, and corrugated paper inserted and glued between the surface paper and back paper in a packaging factory producing boxes, and such corrugated paper is generally a product box or agricultural product. It is widely used as a box. White cardboard is manufactured into a small box after the printing process on the surface.

However, when manufacturing interior or exterior materials for building or interior furniture using corrugated cardboard made of liner paper according to the prior art, it is difficult to maintain the strength required by the interior and exterior materials for furniture or interior and exterior materials for furniture only by the adhesive force between liner paper, corrugated core and surface paper. There is a limitation in applying the prior art corrugated cardboard for interior and exterior building materials.

KR 10-0368875 B1, Jan. 24, 2003, pp. 3-4

Accordingly, the present invention has been proposed to solve the above problems of the prior art, and has the following objects.

First, the present invention is to provide a coating composition that can improve the strength of the paper base paper.

Second, another object of the present invention is to provide an improved cardboard and its manufacturing method.

Third, another object of the present invention is to provide a cardboard having a water repellency and oil repellency and a method of manufacturing the same.

Fourth, the present invention is another object to provide an environment-friendly interior and exterior materials including the cardboard.

The present invention according to one aspect for achieving the above object is 15-30% by weight epoxy resin, 20-30% by weight melamine resin, 5-15% by weight of vinyl acetate emulsion adhesive, 4-8% by weight illite, vaporization It provides a coating composition for improving the strength of the paper base paper, which is mixed with 3 to 6% by weight of rust preventive agent, 5 to 9% by weight of flame retardant, 10 to 20% by weight of methanol, and 15 to 25% by weight of water.

In addition, the present invention according to another aspect for achieving the above object provides a paperboard containing the recycled paper and the coating composition of claim 1 coated on the outer surface of the paper.

Preferably, the coating composition may be coated in an application amount of 3 ~ 20g / m ² on the outer surface of the base paper.

In addition, the present invention according to another aspect for achieving the above object is the step of applying the coating composition to the outer surface of the base paper in a coating amount of 3 ~ 20g / m ² , and the coating composition applied to the outer surface of the base 120 It provides a cardboard manufacturing method comprising the step of curing to a temperature of ~ 200 ℃, and the step of laminating the base paper.

Preferably, the cardboard manufacturing method, after the step of curing the coating composition applied to the outer surface of the base paper at a temperature of 120 ~ 200 ℃, the step of high-frequency heat treatment of the base paper, PE (PolyEthylene) film 0.15 ~ 0.32mm Forming to a thickness of, and the step of laminating the PE film on the inner surface of the base paper, and further comprising the step of flame-resistant treatment of the outer surface of the base paper.

Preferably, the step of flameproofing the outer surface of the base paper may be carried out by coating the outer surface of the base of the flame retardant composition consisting of 15 to 30% by weight of the thermosetting resin, 5 to 15% by weight of the flame retardant, the remaining aqueous solution.

Preferably, the paperboard manufacturing method, after the step of curing the coating composition applied to the outer surface of the base paper at a temperature of 120 ~ 200 ℃ step of high-frequency heat treatment of the base paper, PE (PolyEthylene) film 0.12 ~ 0.25mm Forming to a thickness of, the step of laminating the PE film on the inner surface of the paper, and the step of rust-proofing the outer surface of the paper.

Preferably, the step of rust-proofing the outer surface of the base paper may be carried out by coating the outer surface of the base of the anti-rust composition consisting of 15 to 30% by weight of the thermosetting resin, 3 to 12% by weight of the vaporizable rust preventive agent, the remaining aqueous solution.

Preferably, the cardboard manufacturing method, after curing the coating composition applied to the outer surface of the base paper at a temperature of 120 ~ 200 ℃, coating the inner surface of the base material with a thickness of 3 ~ 10g / mm2 It may further include.

In addition, the present invention according to another aspect for achieving the above object can provide an eco-friendly interior and exterior materials manufactured in the form of plywood by pressing a plurality of the cardboard and then pressing using a pressure roller.

As described above, according to the present invention, it is possible to expand the use of the cardboard by improving the strength of the paper base according to the prior art, to expand the use use by giving the flame-retardant, rust-proof, waterproof, diversified products and environmentally friendly It can be used for interior and exterior materials.

1 is a process flow diagram illustrating a method of manufacturing a corrugated cardboard or white cardboard paper according to an embodiment of the present invention.
2 is a process flowchart showing a flame retardant treatment method according to an embodiment of the present invention.
Figure 3 is a process flow diagram illustrating a rust prevention treatment method according to an embodiment of the present invention.

Advantages and features of the present invention, and methods for achieving them will be apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms.

In this specification, the embodiments are provided so that the disclosure of the present invention may be completed and the scope of the present invention may be completely provided to those skilled in the art. And the present invention is only defined by the scope of the claims. Thus, in some embodiments, well known components, well known operations, and well-known techniques are not specifically described to avoid an undesirable interpretation of the present invention.

Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense commonly understood by one of ordinary skill in the art to which this invention belongs. Also, commonly used predefined terms are not ideally or excessively interpreted unless they are defined.

The coating composition for improving the strength of the cardboard according to the embodiment of the present invention is a thermosetting resin epoxy resin (Kukdo Chemical Co., Ltd., Waterborne Epoxy Resin) and melamine resin (Gangnam Chemical Co., Ltd.), vinyl acetate resin adhesive (( Yeongil Hwasung), Illite (Dongchang Illite Co., Ltd.), Vaporizable antirust agent (Knoxtop Co., Ltd.), Flame retardant (Ilshin Chemical, F-100), Methanol (OCI).

Specifically, the mixing ratio of the coating composition according to the present invention is 15 to 30% by weight of epoxy resin, 20 to 30% by weight of melamine resin, 5 to 15% by weight of vinyl acetate emulsion adhesive, 4 to 8% by weight of illite, vaporizing antirust agent 3 It consists of-6 weight%, a flame retardant 5-9 weight%, 10-20 weight% of methanol, and 15-25 weight% of water.

Illite, which is one of the components of the coating composition according to the present invention, adsorbs various heavy metals, organic substances, toxic substances, etc., and has an excellent deodorizing effect due to adsorption / decomposition characteristics of specific radioactive substances and toxic gases. It emits high far infrared rays and is known to release a large amount of anions in itself without external reaction. It is known to emit 93% of far infrared rays at approximately 40 ° C. Far infrared rays are effective for promoting blood circulation in the human body, and anions generate a large amount of oxygen to perform bacteriostatic effects such as viruses, bacteria, and fungi, and maintain freshness of foods such as vegetables and fruits for a long time. In addition, the illite has a heat storage / heat insulation function and has a low thermal conductivity, which is stable to heat.

Volitile Corrosion Inhibitor, which is one of the components of the coating composition according to the present invention, is applied to the surface of metal like other rust inhibitors to protect the object from corrosion, unlike other chemicals having sufficient vaporizing power and antirust effect. When the molecules of vaporizable rust inhibitor are released into the air, the particles of the vaporizable rust inhibitor are saturated in the airtight space, and the particles are adsorbed on the metal surface to form a film, thereby inhibiting the role of electrolyte causing corrosion on the metal surface. Antirust effect.

Flame retardant, which is one of the components of the coating composition according to the present invention, has excellent washing resistance and heat resistance, and does not generate a GUM UP phenomenon even when used in summer. In addition, it is well mixed with urethane or acrylic resin and has excellent adhesive strength, and does not contain formalin or halogen, so it is environmentally friendly and has excellent storage stability.

On the other hand, the mixing ratio of the coating composition according to the present invention can be appropriately added or reduced depending on the use of the environment-friendly interior and exterior materials to be used. That is, when cardboard, for example, corrugated or white cardboard is used as interior and exterior building materials or interior and exterior furniture, it can be appropriately added or subtracted within the mixing ratio according to the strength required by the interior and exterior building materials or furniture.

Hereinafter, a method of manufacturing a cardboard using the coating composition according to the present invention will be described.

1 is a flowchart illustrating a method for manufacturing a cardboard, for example, corrugated cardboard using the coating composition according to the present invention. Hereinafter, for the sake of convenience, the term “corrugated cardboard” is referred to as “original paper”.

Referring to Figure 1, to prepare a coating composition according to the present invention (S11). Coating composition manufacturing method is as follows. Epoxy resin and melamine resin, which are thermosetting resins, are dissolved sequentially with aqueous methanol and water, and vinyl acetate resin emulsion, illite powder, and milky white liquid flame retardant having anionic properties are dissolved with water. Thus, the solution dissolved in the aqueous solution and the vaporizable anti-corrosive agent is stirred through a stirrer to prepare a coating composition.

Then, applying the coating composition to the outer surface of the base paper produced by playing back a notice by a technique known to 100% in a certain amount, for the application amount of the example 3 ~ 20g / m ^2, preferably 15g / m ² (S12) .

Then, the coating composition applied to the outer surface of the base paper is cured at a temperature of 120 ~ 200 ℃, preferably 150 ℃ (S13). For example, the base paper coated with the coating composition may be cured using a heat roller. That is, the base paper is brought into contact with the heat roller to cure the coating composition applied to the base paper. In this case, the surface temperature of the heat roller is maintained at 120 to 200 ° C, preferably 150 ° C. In addition, the coating composition may be cured using hot air.

Then, using a corrugated cardboard manufacturing apparatus, also known as a corrugator (corrugator) by laminating the base paper cured coating composition with another base paper (or corrugated paper) to produce a cardboard, for example cardboard or white paper (S14).

Using the manufactured cardboard is to produce interior and exterior building materials or interior and exterior materials for furniture. For example, the interior and exterior materials are produced by a method of pressurizing using a pressure roller in a state where a plurality of cardboards are laminated. For example, a plurality of corrugated cardboards are pressed by a predetermined time, for example, 5 to 20 seconds using a heat roller at 150 to 300 ° C. in a state in which two or more corrugated cardboards manufactured by the method described above are stacked. The interior and exterior of the plywood form will be manufactured.

On the other hand, after step S12, or after step S13, by coating a vaporizing anti-corrosive agent on the inner surface (the opposite side of the coating composition is not coated) coated with the coating composition may be rust-treated. At this time, it is preferable to apply | coat a vaporizing antirust agent to the inner surface of a base paper by the application amount of 3-10 g / m <^2> .

After step S13 shown in Figure 1, the coating composition may be further flame-resistant to the base paper cured.

2 is a flowchart illustrating a flame retardant treatment method according to an embodiment of the present invention.

Referring to Figure 2, the base paper is subjected to a high frequency heat treatment (S21). In this case, the high-frequency heat treatment is performed by heating the surface of the heated object to a predetermined quenching temperature (depending on the material of the heated object) by using a method of high frequency induction heating, and cooling it by air cooling or water cooling.

Then, after supplying polyethylene (PolyEthylene, PE) into the melting apparatus to melt, using a film forming apparatus to form a polyethylene film, that is, a PE film to a predetermined thickness (S22).

Then, the PE film is laminated on the inner surface of the high-frequency heat-treated paper in step S21 (S23). At this time, in the lamination process, the base paper and the PE film are laminated using the lamination roller. In this process, the PE film is firmly laminated on the inner surface of the base paper through a heat treatment process.

Then, flame-resistant treatment is performed on the outer surface of the base paper (S24). At this time, a flame retardant treatment is carried out using a flame retardant composition having water repellency and oil repellency in which a thermosetting resin, a flame retardant, and an aqueous solution are mixed. That is, the flame retardant composition is applied to the outer surface of the base paper, and then cured and coated. Here, the thermosetting resin may include an epoxy resin, melamine resin or both. In addition, the aqueous solution may include methanol, water or both.

On the other hand, after step S13 shown in Figure 1, the coating composition may be further subjected to the anti-rust treatment on the base paper cured.

3 is a flowchart illustrating a rust prevention treatment method according to an embodiment of the present invention.

Referring to Fig. 3, steps S31 to S33 are performed in the same manner as the flame retardant treatment method. Then, antirust treatment is performed on the outer surface of the base paper (S34). At this time, antirust treatment is performed using a rustproof composition in which a thermosetting resin, a vaporizable rust preventive agent, and an aqueous solution are mixed. That is, the anti-corrosive composition is coated on the outer surface of the base paper and then cured. Here, the thermosetting resin may include an epoxy resin, melamine resin or both. In addition, the aqueous solution may include methanol, water or both.

Hereinafter, a preferred embodiment for producing a cardboard base paper will be described in detail.

Base paper manufacturing method

15-30% by weight of epoxy resin, 20-30% by weight of melamine resin, 5-15% by weight of vinyl acetate emulsion adhesive, 4-8% by weight of illite, 3-6% by weight of vaporizable rust preventive agent, 5-9% by weight of flame retardant, After preparing a coating composition by stirring 10-20% by weight of methanol and 15-25% by weight of water, the waste paper was recycled to 100%, and then the coating composition was coated on the outer surface of the base paper in a coating amount of 15 g / m ² and then coated. The base paper to which the composition was applied was cured by contacting with a heat roller for maintaining a surface temperature of 150 ° C. for 5 seconds.

Flameproof Treatment

100% recycled base paper was subjected to high frequency heat treatment, and then the PE film was supplied and melted to form a PE film with a thickness of 0.15 to 0.32 mm in a film forming apparatus. Then, the high frequency heat-treated paper was supplied, and the PE film was laminated on the inner surface of the paper. Then, the outer surface was coated with a mixed flame retardant composition containing 15-30% by weight of thermosetting resin, 5-15% by weight of flame retardant, and water. .

Antirust treatment method

100% recycled base paper was subjected to high frequency heat treatment, and then the PE film was supplied and melted to form a PE film with a thickness of 0.15 to 0.32 mm in a film forming apparatus. Then, by supplying a high-frequency heat-treated paper, the PE film was laminated on the inner surface of the paper, and the outer surface was coated with 15-30% by weight of a thermosetting resin, 3-12% by weight of a vaporizable rust preventive agent, and the remaining water-containing anti-corrosive composition. It was.

As described above, the technical spirit of the present invention has been described in detail in the preferred embodiments, but the above-described preferred embodiments are for the purpose of description and not of limitation. As such, those skilled in the art may understand that various embodiments are possible through the combination of the embodiments of the present invention within the scope of the technical idea of the present invention.

Claims (10)

15-30% by weight of epoxy resin, 20-30% by weight of melamine resin, 5-15% by weight of vinyl acetate emulsion adhesive, 4-8% by weight of illite, 3-6% by weight of vaporizable rust preventive agent, 5-9% by weight of flame retardant, A coating composition for improving the strength of paperboard, which is mixed with 10-20 wt% methanol and 15-25 wt% water.
Original paper with recycled paper; And
The coating composition of claim 1 coated on the outer surface of the base paper
Carton containing.
The method of claim 2,
The coating composition is cardboard coated with an application amount of 3 ~ 20g / m ² on the outer surface of the base paper.
Applying the coating composition of claim 1 to an outer surface of the paper in an application amount of 3 to 20 g / m ² ;
Curing the coating composition applied to the outer surface of the base paper at a temperature of 120 to 200 ° C .; And
Laminating the paper
Carton manufacturing method comprising a.
The method of claim 4, wherein
After curing the coating composition applied to the outer surface of the base paper at a temperature of 120 ~ 200 ℃,
High frequency heat treatment of the base paper;
Molding a PE (PolyEthylene) film to a thickness of 0.15 to 0.32 mm;
Laminating the PE film on an inner surface of the paper; And
Flameproofing the outer surface of the base paper
Carton manufacturing method comprising more.
The method of claim 5, wherein
Flame-retardant the outer surface of the base paper,
15 to 30% by weight of the thermosetting resin, 5 to 15% by weight of flame retardant, a method for producing a cardboard carried out by coating the outer surface of the base of the flame retardant composition consisting of the remaining aqueous solution.
The method of claim 4, wherein
After curing the coating composition applied to the outer surface of the base paper at a temperature of 120 ~ 200 ℃,
High frequency heat treatment of the base paper;
Molding a PE (PolyEthylene) film to a thickness of 0.12 to 0.25 mm;
Laminating the PE film on an inner surface of the paper; And
Anti-rusting the outer surface of the base paper
Carton manufacturing method comprising more.
The method of claim 7, wherein
Anti-rust treatment of the outer surface of the base paper,
15 to 30% by weight of the thermosetting resin, 3 to 12% by weight of a vaporizable rust preventive agent, a cardboard manufacturing method carried out by the method of coating the outer surface of the base paper with the remaining aqueous solution.
The method of claim 4, wherein
After curing the coating composition applied to the outer surface of the base paper at a temperature of 120 ~ 200 ℃,
Paperboard manufacturing method further comprising the step of coating the inner surface of the base paper with a thickness of 3 ~ 10g / mm2 vaporizing rust inhibitor.
Environmentally friendly interior and exterior materials manufactured in plywood form by pressing a plurality of cardboards of claim 2 and then pressing using a pressure roller.

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