KR20130043473A - Reinforced composition for corrugated board sheet and corrugated board using the same - Google Patents
Reinforced composition for corrugated board sheet and corrugated board using the same Download PDFInfo
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- KR20130043473A KR20130043473A KR1020110107634A KR20110107634A KR20130043473A KR 20130043473 A KR20130043473 A KR 20130043473A KR 1020110107634 A KR1020110107634 A KR 1020110107634A KR 20110107634 A KR20110107634 A KR 20110107634A KR 20130043473 A KR20130043473 A KR 20130043473A
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Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
- D21F11/12—Making corrugated paper or board
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/47—Condensation polymers of aldehydes or ketones
- D21H17/49—Condensation polymers of aldehydes or ketones with compounds containing hydrogen bound to nitrogen
- D21H17/51—Triazines, e.g. melamine
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
Abstract
The present invention provides an eco-friendly corrugated cardboard base composition having flame retardancy, water resistance and tensile strength, adhesive for producing cardboard, corrugated cardboard, corrugated cardboard and corrugated cardboard laminated board using the same. Corrugated paper base composition of the present invention is 10 to 20 parts by weight of ethylene vinyl acetate resin, 10 to 20 parts by weight of paraffin wax, 5 to 10 parts by weight of starch, 0.1 to 0.3 parts by weight of carboxymethyl cellulose, 0.1 to 0.3 parts by weight of stearic acid, clay (Clay) 1-10 weight part, potassium oxide 5-10 weight part, titanium dioxide 1-5 weight part, iron oxide 1-2 weight part, and 40-60 weight part of water. Corrugated paper manufactured by using the corrugated paper dried and impregnated with the composition of the present invention is an eco-friendly material having both tensile strength and water resistance, which is an excellent eco-friendly material that overcomes the disadvantages of the conventional packaging cardboard box by weakening moisture. It is a material.
Description
The present invention relates to an environment-friendly corrugated cardboard base composition having flame retardancy, water resistance and tensile strength, adhesive for producing cardboard using the same, corrugated cardboard, corrugated cardboard and corrugated board.
In general, corrugated board is formed by adhering the surface paper and the backing paper (commonly referred to as a liner) to one or both sides of corrugating medium paper that is bent into a concave-convex shape at the center. It is widely used as a packaging material for packing various products with the advantage of low price.
As a method of manufacturing such cardboard, for example, Korean Patent Registration No. 10-425002 "Method of manufacturing a non-flammable interior and exterior material using corrugated cardboard", a method of impregnating and drying the corrugated cardboard directly in a mixture of a flame retardant to a thermosetting resin is proposed. have.
However, in the prior art, by impregnating the cardboard directly into the mixture, the impregnation operation takes a lot of time, the working efficiency is lowered, there may be a problem such as the deformation of the corrugated cardboard prototype during the impregnation process, the mixture is also excessive inside the cardboard This may cause a problem that the drying is delayed and the distribution of the residue is not uniform, resulting in uneven strength.
Korean Patent Laid-Open Publication No. 2000-0050802 refers to a method of producing corrugated cardboard with enhanced strength using a spray-dried support material sprayed with a mixed polymer resin on a moving support for producing corrugated cardboard. Formaldehyde resin and carboxy methyl cellulose (CMC), there is a problem in recycling.
In addition, Korean Patent Registration No. 10-1011301 "A composition for preparing corrugated cardboard and a method for manufacturing corrugated cardboard and a cardboard plywood using the same", impregnating and drying a corrugated cardboard base material containing the phenol resin and melamine resin Improved methods have been proposed.
However, this prior art has a disadvantage of not meeting the characteristics of corrugated cardboard production, where productivity is important, because it requires a certain period of drying time, and above all, it is not environmentally friendly by still using phenol resin and melamine resin that release formalin. Because of the odor of residual phenol, it can be a source of environmental pollution not only during the production process but also after shipment, and recycling, like the previous patent, can be a problem.
In addition, Korean Patent Laid-Open Publication No. 10-2007-62299 (2007.06.15) discloses a hydrophilic coating liquid composition for strengthening bone core including an acrylic compound terpolymer.
However, until now, the development of corrugated cardboard that satisfies the characteristics such as flame retardancy, water resistance, and strength strengthening that corrugated cardboard should be equipped for use in a variety of industrial applications has not been fully developed. The need for functional functional cardboard is increasing.
The present invention aims to provide an environment-friendly reinforced corrugated cardboard base composition which is excellent in tensile strength and durability and combines flame retardancy and water resistance, which overcomes the above problems of the prior art.
In addition, another object of the present invention is to provide an adhesive for producing cardboard having excellent adhesive strength, including an environment-friendly reinforced cardboard base composition.
In addition, another object of the present invention is to provide a corrugated paper base, corrugated cardboard and corrugated cardboard laminated board manufactured using the composition and adhesive for producing cardboard or cardboard lamination.
In order to achieve the above object, the corrugated paper base composition of the present invention, 10-20 parts by weight of ethylene vinyl acetate (EVA) resin, 10-20 parts by weight of paraffin wax, 5-10 parts by weight of starch, carboxymethyl 0.1 to 0.3 parts by weight of cellulose, 0.1 to 0.3 parts by weight of stearic acid, 1 to 10 parts by weight of clay (clay), 5 to 10 parts by weight of potassium oxide, 1 to 5 parts by weight of titanium dioxide, 1 to 2 parts by weight of iron oxide, 40 to water It contains 60 parts by weight.
In addition, the corrugated paper base composition of the present invention, at least one selected from 10 to 20 parts by weight of melamine phosphate, 5 to 10 parts by weight of sodium silicate, 0.1 to 1 parts by weight of carbon nanotubes, 1 to 10 parts by weight of nanoclay (clay) It may further include as a flame retardant.
In addition, the corrugated paper base composition of the present invention may further comprise 1 to 5 parts by weight of the amino binder as a flame retardant aid and structural reinforcing aid.
The adhesive for corrugated cardboard production of the present invention can be obtained by adding 10 to 30 parts by weight of the corrugated cardboard base paper composition of the present invention to an adhesive component for producing corrugated cardboard, which contains, for example, starch, liquid sodium silicate as a main component. The corrugated cardboard adhesive may be used as an adhesive to prepare corrugated cardboard as well as to manufacture corrugated cardboard.
Packaging box made of corrugated cardboard material of the present invention of the present invention is not only excellent in light weight and bending strength and durability, but also combines a waterproof function, it can be usefully used as an eco-friendly agricultural, aquatic product packaging box.
In addition, the corrugated cardboard laminated board manufactured by laminating corrugated cardboard made of corrugated cardboard impregnated with the composition for corrugated cardboard is not only excellent in weight and tensile strength compared to plywood or ordinary medium density fiberboard (MDF). However, it has a flame retardant function and can be used as an eco-friendly building interior material.
Corrugated paper base composition of the present invention is EVA resin, paraffin wax, starch, carboxy methylcellulose, stearic acid, clay (clay), potassium oxide, titanium dioxide, iron oxide, melamine phosphate, sodium silicate, carbon nanotube, amino binder and water The composition is mixed at an appropriate ratio.
In the composition of the present invention, EVA resin is an environmentally friendly aqueous emulsion-based resin having good water resistance, unique elasticity, and excellent adhesion to corrugated paper. EVA resins include, for example, vinyl acetate ethylene copolymer emulsions, and the fully collined polyvinyl alcohol should be used as the protective colloid for water resistance.
Paraffin wax has excellent water repellent properties and should be selected to have good penetration into the corrugated paper.
Melamine phosphate (Melamine phosphate) is a compound of melamine and phosphorus with a high nitrogen content. Unlike melamine resin, melamine phosphate is an environmentally friendly flame retardant containing no formalin at the same time, and serves to strengthen the tensile strength of corrugated paper.
Sodium silicate, called "water glass," serves as a flame retardant aid and strengthens the tensile strength of corrugated cardboard.
Carbon nanotubes act as flame retardant fillers, and work together with melamine phosphate, sodium silicate and clay to synergize flame retardancy. Carbon nanotubes use modified multi-walled nanotubes to solve dispersion problems.
Starch is a low-viscosity starch, which enhances the strength of the base paper for corrugated paper, and at the same time, enhances the adhesion between the liner and the medium paper.
Carboxy methyl cellulose, together with clay, acts as a reinforcing force.
Clay (Clay) is a strength enhancer and is a mixture of silicon oxide, aluminum oxide, iron oxide, magnesium oxide and the like.
Potassium oxide (K 2 O), titanium dioxide (TiO 2 ), iron oxide (Fe 2 O 3 ) and the like play a role of strengthening the bond between the components of the clay.
An amino binder is a binder that exhibits a function by heat, and serves to stabilize and bind to melamine phosphate, and to enhance the tensile strength of paper. As an amino binder, methylated polyisocyanate etc. are mentioned, for example.
The blending ratio of each of the mixed components constituting the corrugated cardboard base composition is a result obtained after a long time experiment according to the conditions according to the respective uses of the corrugated cardboard produced by the composition is absorbed and dried. If the blending ratio of each of the mixed components of the composition is lower than the lower limit, the characteristics of flame retardancy, water resistance, structural reinforcement, etc. to impart to the cardboard is inferior, and if it is higher than the upper limit, an appropriate viscosity essential for coating or impregnating the cardboard base paper Is not secured and is not preferred.
In addition, the mixing ratio of each mixed component of the composition can be adjusted according to the use of the finished cardboard or cardboard laminated board. In the composition, the amount of melamine phosphate and amino binder, which influence strength and durability, may be adjusted, or the amount of mineral raw materials including clay may be adjusted to select a compounding ratio suitable for use strength.
Therefore, the corrugated paper base composition of the present invention, 10 to 20 parts by weight of ethylene vinyl acetate (EVA) resin, 10 to 20 parts by weight of paraffin wax, 5 to 10 parts by weight of starch, 0.1 to 0.3 parts by weight of carboxy methyl cellulose 0.1 to 0.3 parts by weight of stearic acid, 1 to 10 parts by weight of clay (clay), 5 to 10 parts by weight of potassium oxide, 1 to 5 parts by weight of titanium dioxide, 1 to 2 parts by weight of iron oxide, and 40 to 60 parts by weight of water.
In addition, the corrugated paper base composition of the present invention, at least one selected from 10 to 20 parts by weight of melamine phosphate, 5 to 10 parts by weight of sodium silicate, 0.1 to 1 parts by weight of carbon nanotubes, 1 to 10 parts by weight of nanoclay (clay) It may further include as a flame retardant.
In addition, the corrugated paper base composition of the present invention may further comprise 1 to 5 parts by weight of the amino binder as a flame retardant aid and structural reinforcing aid.
In the present invention, when bending is required, such as a packaging box, the amount of EVA resin having good elastic modulus can be increased. In addition, in the case of a packaging box that does not require flame retardancy, except for carbon nanotubes and sodium silicate, melamine powder may be used instead of melamine phosphate.
The composition of the present invention is EVA resin (Waker Korea), paraffin wax (ENT korea), melamine phosphate (Sunggwang Chemical), sodium silicate (S-Chem Tech), carbon nanotube (Hanhwa Nanotech), starch (Samyang Genex) , Carboxymethyl cellulose (Sungwang Chemical), stearic acid (Duksan Chemical), clay (polychemical), potassium titanium dioxide, iron oxide (Sungsung Chemical), amino binder (Leas) It was prepared by stirring, the mixture was transferred to the impregnation tank, and the liner and corrugated medium were dried through the impregnation tank at a speed of 100 to 150 m per minute, and then corrugated cardboard was prepared.
Hereinafter, a preferred embodiment of the present invention will be described in detail by dividing the composition for producing a corrugated cardboard, adhesive for producing cardboard, corrugated cardboard, corrugated cardboard and laminated cardboard.
Examples 1-2: Compositions for Corrugated Paper Base for Packaging Materials
The amount of each material used in the composition for corrugated cardboard for packaging materials is shown in Table 1 below.
(For surface)
(For central)
water
EVA resin
Paraffin wax
Carboxy Methyl Cellulose
Starch
kg
kg
kg
g
kg
8
14
20
200
7.8
8
10
20
200
11.8
water
Melamine phosphate
Stearic acid
clay
Potassium oxide
Titanium dioxide
Iron dioxide
Amino binder
kg
kg
g
kg
kg
g
g
kg
17.7
5
300
15
1.7
200
100
10
15
10
300
10
1.7
200
100
12.7
1) First Mix
Water, EVA resin and paraffin wax were added to the mixer, and the mixture was stirred slowly for 30 minutes. After a small amount of carboxymethyl cellulose was added for 30 minutes, the dispersion was confirmed, and starch was added 4-5 times, followed by 120 minutes. Continue mixing while.
2) secondary mixing
Water and stearic acid are added to the mixer and dissolved for 60 minutes, and then melamine phosphate is added and dispersed for 30 minutes. Clay, potassium oxide, titanium dioxide, and iron dioxide were added thereto in order to disperse, and finally, the amino binder was added, followed by stirring for 2 hours.
3) final mixing
The primary mixture is dropped from the primary mixer to the secondary mixer over 40-50 minutes before impregnation and further mixed for 20-30 minutes after completion.
Examples 3 to 5: Compositions for Corrugated Cardboard Base for Building Materials
The amount of each material used in the composition for corrugated cardboard for building materials is shown in Table 2 below.
(For surface)
(For central)
(For preventing noise between floors)
water
EVA resin
Paraffin wax
Carboxy Methyl Cellulose
Starch
kg
kg
kg
g
kg
8
14
20
200
7.8
8
10
20
200
11.8
8
10
20
200
11.8
water
EVA resin
Carbon nanotubes
Melamine phosphate
Stearic acid
clay
Sodium silicate
Potassium oxide
Titanium dioxide
Iron dioxide
Amino binder
kg
kg
g
kg
g
kg
kg
kg
g
g
kg
12.7
5
100
5
100
10
6.3
0.5
200
100
10
13
5
100
10
100
5
5
0.5
200
100
11
13
5
200
10
100
5
5
0.4
200
100
11
1) First Mix
Water, EVA resin and paraffin wax were added to the mixer, and the mixture was stirred slowly for 30 minutes. After a small amount of carboxymethyl cellulose was added for 30 minutes, the dispersion was confirmed, and starch was added 4-5 times, followed by 120 minutes. Continue mixing while.
2) secondary mixing
Water and stearic acid are added to the mixer and dissolved for 60 minutes, and then EVA resin and melamine phosphate are added and dispersed for 30 minutes. The carbon nanotubes are dispersed in small amounts over 2 hours. Thereafter, clay, potassium oxide, titanium dioxide, and iron dioxide are sequentially added and dispersed, followed by mixing of sodium silicate. Finally, stirring is continued for 2 hours after the addition of the amino binder.
3) final mixing
The primary mixture is dropped from the primary mixer to the secondary mixer over 40-50 minutes before impregnation and further mixed for 20-30 minutes after completion.
Example 6 Method for Producing Corrugated Cardboard Impregnated with Composition of the Present Invention
Paper used in the manufacture of corrugated paper impregnated in the compositions of Examples 1 to 5 of the present invention is KSM 7502 (Kraft paper, Kraft liner, pulp as raw material) and KSM 7502 (Jute paper, Jute liner, Waste paper) KSM7076 pulp core and KSM7076 waste core were used as bone cores.
The mechanical equipment used to produce the corrugated cardboard base material impregnated with the composition of the present invention is a conventional coating equipment, and the coating (impregnation) speed is 120 m per minute. The drying line to ensure drying is 28m, the drying temperature is 80 ℃ ~ 130 ℃.
On the other hand, the impregnation tank was composed of a structure capable of primary impregnation (front impregnation) and secondary impregnation (rear impregnation), and the length was 5m to ensure sufficient impregnation time. The impregnated cardboard base can be used for the manufacture of corrugated cardboard without the need for a separate maturing period.
Test Example 1 Comparative Example of Burst Strength
The burst strength of the corrugated paper stock impregnated with KLB180 paper with the composition of the present invention was measured to be 3.0-3.5 kg / cm 2. This was a significant strength reinforcement of more than 1.5 times compared to that of the corrugated paper prior to impregnation of 1.8-2.0 kg / cm 2.
Examples 7 to 8: Method of producing corrugated cardboard using the corrugated cardboard base of the present invention
The machinery used for producing corrugated cardboard using the corrugated cardboard obtained by Example 6 of the present invention is a common corrugator. In the process of manufacturing corrugated paper, the corrugated paper roll is unrolled and passed through a pair of forming rollers through a guide roller and a plurality of tension rollers in an S-shape to make an uneven corrugated core. Applying the adhesive for adhesion with the liner (liner) on the back of the uneven corrugated core while passing through the adhesive application roller located at the bottom of the roller. The liner paper is guided to the forming roller by the guide roller, wherein the forming roller and the liner guide roller are supplied with heat to evaporate the moisture contained in the paper so that the molding of the corrugated core can be performed stably, and the liner can also be free of wrinkles. In an open state to meet with the core.
In general, the adhesive used to manufacture corrugated cardboard is subjected to heat and pressure in the corrugator to completely gelatinize the starch component in the adhesive, and exhibits initial adhesive strength due to a sharp increase in viscosity, thereby completing the adhesion through a subsequent drying process.
In general, corrugated adhesive is manufactured by gelatinization method called stare hole method or no carrier method. The stain hole method consists of a mixture of a starch system which is gelatinized in an alkaline condition called a carrier part and an ungelatinized starch system called a main part. According to the manufacturing method, a one tank method and a two tank method are used. There is a two tank method.
In the furnace carrier method, water and starch are added to a tank to make a starch system, and then, when sodium hydroxide is added to a suitable viscosity, boric acid (or borax) is added to form an adhesive.
Currently, various adhesives have been developed to solve the uneven quality of the corrugated paper and the initial adhesive strength or poor adhesion caused by the increase in the speed of the corrugator.
In the present invention, as a result of studying to solve the problem that the conventional adhesive is weak to water and the adhesion is poor, it was found that it has an excellent adhesive effect by adding the corrugated paper base composition of the present invention to the conventional adhesive component. In the corrugated cardboard production of the present invention it was used to make an adhesive, such as Table 3 and Table 4 below.
(Stained hole to tank method)
water
Primary Mixture of Example 4
Starch mixture
(Normal starch: oxidized starch = 78:22 (w: w))
Sodium hydroxide solution
(Sodium hydroxide granules: water = 3: 4 (w: w))
kg
kg
kg
kg
50
1.1
5.5
1.75
water
Secondary Mixture of Example 4
Starch mixture
(Normal starch: oxidized starch = 94: 6 (w: w))
Borax 5
kg
kg
kg
kg
46.5
3.2
21
0.65
1) First Mix
The starch mixture was added to 55 ° C. water, stirred for 30 minutes, and then the first mixture of Example 4 was added and stirred for 30 minutes. An aqueous sodium hydroxide solution is added thereto and further stirred for 30 minutes.
2) secondary mixing
The starch mixture was added to water at 30 ° C., stirred for 30 minutes, and then stirred for 30 minutes by adding a second mixture of Example 4. The borax pentahydrate was added thereto and further stirred for 30 minutes.
3) final mixing
The primary mixture is dropped from the primary mixer to the secondary mixer over 20-30 minutes and further mixed for 10 minutes after completion.
(No carrier method)
Primary + Secondary Mixture of Example 4
Starch mixture
(Normal starch: oxidized starch = 95: 5 (w: w))
Sodium hydroxide solution (50%
Boric acid
kg
kg
kg
kg
1.1
27.5
1.4
0.25
1) mixed
The starch mixture was added to water at 40 ° C., stirred for 30 minutes, and then the first and second mixtures of Example 4 were added and stirred for 30 minutes. An aqueous sodium hydroxide solution was added thereto and stirred for 5 minutes, followed by further addition of boric acid for 10 minutes.
Test Example 2 Comparative Example of Burst Strength
The tear strength of corrugated cardboard manufactured using KBL180 paper among the existing corrugated cardboard products was 3.3-4.0 kg / ㎠, The tear strength of the corrugated cardboard produced by the production method of the present invention was measured at 5.5-6.0 kg / cm 2, confirming that the strength of the corrugated cardboard according to the present invention was enhanced.
Test Example 3 Comparative Example of Adhesive Strength
Evaluation of the adhesive strength of the corrugated cardboard of the present invention is applied to a KBL paper that can be generally obtained using a laboratory bar coater (Bar coater, # 30) after applying a certain amount of adhesive on the same paper without the adhesive applied to a temperature of 150 ℃ After pressing dry with a tailored iron was measured using a tensile strength meter. As a result of the measurement, the adhesive strength of the corrugated cardboard adhesive of the present invention was 8.2 (kN / m), compared to 5.3 (kN / m).
Test Example 4 Comparative Example of Water Resistance
The water resistance of the corrugated cardboard of the present invention was evaluated by visually observing whether the corrugated cardboard and the surface were spontaneously separated after leaving the manufactured cardboard vertically submerged in a water tank for 24 hours. As a result of the evaluation, spontaneous separation was not observed in the cardboard of the present invention, whereas normal cardboard spontaneously separated after 24 hours.
Application Example 1 Application Example of the Corrugated Cardboard of the Present Invention
The packaging box using the corrugated cardboard impregnated and dried in the composition of the present invention is lightweight, yet excellent in durability and impact resistance and excellent in water resistance. Addition of insect repellent and antimicrobial substances can keep agricultural products such as vegetables and fruits for a long time, and can be used as a box for refrigeration, freezing, and storage with excellent water resistance and low temperature stability.
Example 9-11: manufacturing method of the corrugated cardboard laminated board using the corrugated cardboard of the present invention
Corrugated cardboard of the present invention by laminating one or more according to the intended use to make a cardboard laminated board, pasted veneer veneer, PVC veneer, melamine decorative boards on both sides or cross-section thereof can be used as building interior materials and furniture materials.
At this time, the adhesive is spray spray applied between the laminated layers, laminated cardboard and pressurized for 10 to 15 seconds with a heat of 230 ℃ to make a cardboard laminated board. The adhesive used in the manufacture of the laminated board of the present invention is generally used the same adhesive as in Tables 3 and 4 of the Examples 7 and 8 to bond the core core and liner paper, or to increase the strength of the laminated board or flame retardant In order to secure it, an adhesive including liquid sodium silicate and carbon nanotubes can be used.
In Example 9 of the present invention, the adhesive for the stain-hole-to-tank method of Example 7 was used as the adhesive for cardboard lamination, and in Example 10, the adhesive for the furnace carrier type was used as the adhesive for cardboard lamination in Example 10. In Example 11, the following adhesive was used as an adhesive for laminating cardboard.
Carbon nanotubes
Liquid Sodium Silicate
g
kg
100
20
1) mixed
After dispersing a small amount of carbon nanotubes in EVA resin for 2 hours, a small amount of liquid sodium silicate was added thereto over 1 hour and then stirred for an additional 30 minutes.
Test Example 5 Comparative Example of Tensile Bending Strength
1.5 cm thick, 100 cm 2 wide obtained by laminating 10 pieces of cardboard manufactured using the base paper for cardboard of the present invention Corrugated board with a thickness of 1.5 cm, width 100 cm 2 as a comparison sample As a result of applying a pressure of 150 kg on the general MDF board, the corrugated board of the present invention had a slight deflection but was restored to its original state after the pressure was removed. In contrast, the general MDF board broke with cracking after about 2 minutes and 30 seconds with the warpage phenomenon.
Test Example 6 Comparative Example of Water Resistance
The water resistance of the corrugated laminated board of the present invention was evaluated by visually observing whether the corrugated cardboard and the surface paper and the laminated cardboard spontaneously separated after leaving the manufactured cardboard laminated board vertically submerged in the water tank for 24 hours. .
As a result of the evaluation, spontaneous separation phenomenon was not observed in the corrugated board of the present invention, whereas general corrugated boards spontaneously separated after 24 hours.
Test Example 7: Comparative example of flame retardancy
The flame retardancy of the corrugated laminate board of the present invention does not satisfy the flame retardancy of UL94 V0, but as a result of evaluating the weight reduction rate during combustion, it can be observed that the combustion rate is significantly suppressed at 0.5-1.0% of the amount of nanocarbon tube addition. Could.
Application example 2 application example of the present invention corrugated board
Corrugated laminated board of the present invention can change the tensile strength of the corrugated cardboard by adjusting the void area of the corrugated core can improve the thermal insulation function. Therefore, the corrugated laminated board may be used as an interlayer noise preventing material in combination with a floor decoration material, or may be used as an interlayer noise preventing material alone as a corrugated cardboard laminated board having increased the amount of sodium silicate. At this time, by controlling the amount of carbon nanotubes it is possible to change the interlayer noise protection capacity.
Claims (18)
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| KR20160142148A (en) * | 2015-06-02 | 2016-12-12 | 주식회사 이제이코리아 | Eco-friendly composite heat-insulating material |
| WO2018022020A1 (en) * | 2016-07-26 | 2018-02-01 | Hewlett-Packard Development Company, L.P. | Coating composition for corrugated paper board |
| CN114108367A (en) * | 2021-11-30 | 2022-03-01 | 上海东升新材料有限公司 | Method for preparing modified cationic starch by dry method |
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2011
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20160142148A (en) * | 2015-06-02 | 2016-12-12 | 주식회사 이제이코리아 | Eco-friendly composite heat-insulating material |
| CN105622044A (en) * | 2015-12-29 | 2016-06-01 | 卓达新材料科技集团有限公司 | Novel fire-proof plate and preparation method thereof |
| WO2018022020A1 (en) * | 2016-07-26 | 2018-02-01 | Hewlett-Packard Development Company, L.P. | Coating composition for corrugated paper board |
| US10590605B2 (en) | 2016-07-26 | 2020-03-17 | Hewlett-Packard Development Company, L.P. | Coating composition for corrugated paper board |
| CN114108367A (en) * | 2021-11-30 | 2022-03-01 | 上海东升新材料有限公司 | Method for preparing modified cationic starch by dry method |
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