KR102215615B1 - Papers for filter containing activated carbon and method for manufacturing the same - Google Patents

Abstract

The present invention relates to a filter base paper containing activated carbon and a method for manufacturing the same, and according to the present invention, a raw material step of preparing a raw material using pulp, activated carbon, a binder and a functional additive; A paper peeling step of forming a wetland peel from the raw material; It is possible to provide a method for producing a filter base paper containing activated carbon comprising a dehydration step of compressing and dehydrating the wetland peel and a drying step of drying the dehydrated paper peel to prepare a filter base paper containing activated carbon.
In addition, it is possible to provide a filter base paper containing activated carbon including a base paper including pulp, activated carbon, a binder and a functional additive.

Description

Paper for filter containing activated carbon and method for manufacturing the same {Papers for filter containing activated carbon and method for manufacturing the same}

The present invention relates to a filter base paper containing activated carbon and a method for manufacturing the same, and more specifically, by preparing the base paper through a wet-laid method by adding pulp and activated carbon as main materials and adding a binder and a functional additive. The present invention relates to a filter base paper containing activated carbon having a simple process and excellent strength as well as deodorizing performance by containing more than 70 parts by weight of activated carbon, and a method of manufacturing the same.

The 4th Industrial Revolution is focused on making people's living environments more convenient and healthy, but due to the rapid growth of industrialization and the explosive increase in energy demand, the accompanying environmental pollution is getting worse day by day. Among them, air pollution most closely affects human health.

Air pollution has reached a very serious level, with the incidence of yellow and fine dust from China, various fine dust and dust generated by the use of oil or coal, VOCs and various harmful gases, etc. As a result, the demand for various air filter products is increasing rapidly.

Not only outdoor air pollution but also indoor air pollutants pose a great threat to health.According to the World Health Organization (WHO), about 4.2 million people die from indoor air pollution a year than those who die from outdoor air pollution. It is statistically high, and it is reported that the probability of indoor pollutants reaching the lungs is about 1000 times higher than that of outdoors.

Representative indoor air pollutants include fine dust, smoking, nitrogen dioxide (NO ₂ ), carbon monoxide (CO), carbon dioxide (CO ₂ ), radon, asbestos, pathogenic bacteria, and volatile organic compounds (VOCs). The causes of this are the inflow of pollutants contained in the outside air into the room, construction materials, insufficient ventilation due to sealing, indoor smoking, and the use of combustion devices.

Among indoor pollutants, volatile organic compounds (VOCs), which have recently been a problem, are very toxic to the nervous system as well as the respiratory and circulatory systems, and they deteriorate the sensory ability in the peripheral nervous system, contain carcinogenicity, and genotoxicity, and require thorough management to be.

Accordingly, research to effectively remove volatile organic compounds (VOCs) is being actively conducted, and the deodorization filter using activated carbon is excellent in removing VOCs and odors (ammonia, acetic acid), and the demand for a deodorizing filter with higher performance. Is an increasing situation.

Recently, most of the air purifier deodorization filter products have excellent ventilation, and round and columnar corrugated type deodorization filters that use a larger surface area as well as a flat surface to increase deodorization performance are preferred.

However, the high-performance activated carbon base for manufacturing the corrugated deodorizing filter is entirely manufactured in Japan and is being imported at a high price in Korea.

In addition, the existing products have a maximum of 30-50% activated carbon content, so there are many limitations in removing VOCs gas, and thus there is a problem in that chemical additives are used more than necessary.

In addition, conventional paper or non-woven type fabrics did not cause problems in corrugated shape and lamination, but as the content of activated carbon increases, the base paper becomes heavier, so the tensile and rupture strength of the base paper may be weakened. There was a limit to the addition of activated carbon in

In addition, the silver manufacturing process of the existing product consists of activated carbon coating→drying→adhesive coating→drying, which is a complex manufacturing method that consumes time and requires a lot of manpower.

Therefore, it is necessary to develop a technology for an activated carbon base paper that has excellent deodorizing performance and excellent strength such as tensile strength and bursting strength in Korea, and can reduce manufacturing time and cost by simplifying the manufacturing process.

In order to solve the above problems, the present invention uses pulp and activated carbon as main materials, and by adding a binder and a functional additive to prepare a base paper through a wet-laid method, the manufacturing process is simple and more than 70 parts by weight of activated carbon It is an object of the present invention to provide a filter base paper containing activated carbon having excellent strength as well as deodorizing performance and a method of manufacturing the same.

In order to solve the above problems, a method for producing a raw material for a filter containing activated carbon according to an embodiment of the present invention includes a raw material step of preparing a raw material using pulp, activated carbon, a binder, and a functional additive; A paper peeling step of forming a wetland peel from the raw material; It is possible to provide a method for producing a filter base paper containing activated carbon comprising a dehydration step of compressing and dehydrating the wetland peel and a drying step of drying the dehydrated paper peel to prepare a filter base paper containing activated carbon.

Here, the raw material step is a dissociation step of dissociating the pulp; It may include a beating step of crushing the dissociated pulp, and a treating step of adding and mixing activated carbon, a binder, and a functional additive to the crushed pulp.

In addition, the beating step is characterized in that the dissociated pulp is beaten so that the beating degree is 43 to 47° SR.

In addition, the activated carbon is one of palm-based activated carbon, coal-based activated carbon, wood-based activated carbon, and carbon black, and has a specific surface area of 550 m ² /g or more and an iodine adsorption capacity of 700 mg/g or more.

In addition, the binder is characterized in that at least one of vinylon, acrylic, low-melting polyester (LMPET), polyethylene terephthalate (PET), and wood fibers.

In addition, the functional impregnating agent is characterized in that at least one of zeolite, cyclodextrin, carbon fiber, and amine-weak acid-based compounds.

In addition, the treatment step is characterized in that 8 to 12 parts by weight of a binder is added to 100 parts by weight of the beaten pulp.

In addition, the treatment step is characterized in that mixing by adding 70 parts by weight or more of activated carbon to 100 parts by weight of the beaten pulp.

In addition, after the dehydration step, a lamination step of stacking two or more layers of the dehydrated paper may be further included.

In addition, after the drying step, a coating step of forming a coating layer by applying a functional additive to the filter base paper containing the activated carbon, and a calendering step of calendering the filter base paper containing the activated carbon coated with the functional additive. It may further include.

In addition, the filter base paper containing activated carbon according to an embodiment of the present invention can provide a filter base paper containing activated carbon including pulp, activated carbon, a binder and a functional impregnating agent.

In addition, the filter base paper containing the activated carbon may further include a coating layer formed by applying a functional additive to the surface.

The base paper for a filter containing activated carbon according to the embodiment of the present invention as described above and a method for manufacturing the same include pulp and activated carbon as main materials, and a binder and functional additives are added to prepare the base paper through a wet-laid method, By containing more than 70 parts by weight of activated carbon, it is possible to manufacture a high-quality product having excellent strength as well as deodorizing performance.

In addition, by simplifying the manufacturing process, manufacturing time and cost can be reduced.

In addition, there is an advantage that the addition of activated carbon, additives, etc. can be made stably, and the subsequent processability of the filter base paper containing activated carbon is easy.

In addition, it is expected to be applied to various fields such as consumables such as filters and sensors.

1 is a flow chart schematically showing a method for producing a filter base paper containing activated carbon according to an embodiment of the present invention.
2 is a flowchart sequentially showing step S10 of FIG. 1;
3 is a graph of the results of ammonia and acetaldehyde removal experiments of Preparation Examples 1 and 2;

The present invention can be modified in various ways and may have various forms, and specific embodiments will be described in detail in the text. However, this is not intended to limit the present invention to a specific form of disclosure, it is to be understood as including all changes, equivalents, or substitutes included in the spirit and scope of the present invention.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present application, terms such as "include" or "have" are intended to designate that a combination of features, numbers, steps, components, etc. described in the specification exists, but one or more other features or numbers, It is to be understood that the presence or addition possibility of combinations of steps, components, and the like is not excluded in advance.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted as an ideal or excessively formal meaning unless explicitly defined in this application. Does not.

Here, repeated descriptions, well-known functions that may unnecessarily obscure the subject matter of the present invention, and detailed descriptions of configurations are omitted. Embodiments of the present invention are provided to more completely explain the present invention to those with average knowledge in the art.

Hereinafter, with reference to FIGS. 1 to 3 for explaining an embodiment of the present invention will be described in detail.

In the present invention, pulp and activated carbon are used as the main materials, and a binder and functional additives are added to prepare raw materials through a wet-laid method, and the process is simple and deodorizing performance is achieved by manufacturing base paper through a wet-laid method. In addition, it is intended to provide a manufacturing method capable of manufacturing a filter base paper containing activated carbon having excellent strength, and a filter base paper containing activated carbon prepared through this.

First, a description will be made of a method for producing a filter base paper containing activated carbon of the present invention.

1 is a flowchart schematically showing a method of manufacturing a filter base paper containing activated carbon according to an embodiment of the present invention, and FIG. 2 is a flowchart sequentially showing step S10 of FIG. 1.

Referring to Figure 1, the method for producing a filter base paper containing activated carbon according to an embodiment of the present invention includes a raw material step (S10), a paper filling step (S20), a dehydration step (S30), a drying step (S40), a coating step ( S50) and a calendaring step (S60) may be included.

First, the raw material step (S10) is a step of preparing a raw material to prepare an active end base paper, and the raw material may be prepared using pulp, activated carbon, a binder, and a functional additive.

Specifically, referring to FIG. 2, step S10 may include a dissociation step (S11), a confession step (S12), and a treaty step (S13).

The dissociation step (S11) is a step of dissociating the pulp, and may be dissociated by placing the pulp in water to a certain concentration and stirring to completely dissociate.

Here, the pulp is preferably wood pulp, but is not limited thereto.

The beating step (S12) is a step of physically impacting and beating the dissociated pulp in step S11, and through this, it can be converted into short fibers.

At this time, step S12 may be beaten at a rotational speed of 600 rpm or higher at a concentration of 3% by weight or less using a beater.

By beating the pulp to the concentration as described above, the wetland pill formed in the paper-filling step (S20) has an appropriate moisture content, so that the occurrence of contamination can be reduced when moving to the dehydration step (S30). If the concentration is exceeded, the occurrence of contamination may increase and the bonding strength may decrease, so it is preferable that the beating is performed at a concentration of 3% by weight or less.

In addition, when the rotational speed during beating is less than 600 rpm, the beating efficiency may decrease due to a decrease in dispersibility.

In addition, in step S12, the dissociated pulp is preferably beaten so that the beating solubility is 43 to 47° SR.

This is because, when the beating is out of the above range, the added activated carbon does not have its own binding power, so that quality and productivity such as binding power and dispersibility of raw materials may be deteriorated, and contamination may increase.

Treating step (S13) is a step of mixing by adding activated carbon, a binder, and a functional additive to the pulp beaten in step S12, and by adding activated carbon, a binder, and a functional additive before the paper filling step (S20), the porous structure of the activated carbon is affected. This can be kept to a minimum, and the addition of activated carbon, a binder and a functional additive can be made stably.

Here, the activated carbon can effectively remove volatile organic compounds (VOCs) gas.

The more activated carbon is added, the better the removal function is improved, so it is better to add as much as possible.However, there is a problem in that the base paper becomes heavier and the strength becomes weaker as the content of activated carbon increases, so there is a limit to the amount of activated carbon added. When prepared together, the above limitation does not occur, so that the maximum amount of activated carbon can be added.

Accordingly, the activated carbon may be added in an amount of 70 parts by weight or more in 100 parts by weight of the pulp in step S13.

In this case, when the amount of activated carbon is less than 70 parts by weight, the efficiency of removing volatile organic compounds (VOCs) gas may be reduced.

Such activated carbon may be one of palm-based activated carbon, coal-based activated carbon, wood-based activated carbon, and carbon black, and it is preferable to use one having a specific surface area of 550 m ² /g or more and an iodine adsorption capacity of 700 mg / g or more in consideration of deodorizing performance.

This is because the larger the specific surface area, the more pores exist, and the iodine adsorption power can mean the size of the pores, and the larger and larger the pores, the more gas can be adsorbed. That is, when the specific surface area of the activated carbon and the iodine adsorption power are configured as described above, the activated carbon as described above is preferably used because the filter base paper containing activated carbon exhibits desirable deodorizing performance.

The binder prevents the activated carbon from falling off and improves processability, and may include at least one of vinylon, acrylic, low-melting polyester (LMPET), polyethylene terephthalate (PET), and wood fibers.

Through such a binder, the bonding strength is improved during the production of the base paper, so that activated carbon without its own bonding strength may not be removed, and the problems of lowering strength and quality are improved, so that the maximum amount of activated carbon can be added.

When the above-described binder is used, it is possible to effectively prevent the activated carbon from falling off without affecting the deodorizing performance since it does not block the porous structure of the activated carbon.

To this end, the binder may be 8 to 12 parts by weight, based on 100 parts by weight of pulp, and is preferably added in an amount of 10 parts by weight to the pulp.

At this time, when the amount of the binder is less than 8 parts by weight, the effect of preventing the activated carbon from falling off and improving processability is insufficient, and when it exceeds 12 parts by weight, deodorization performance may be deteriorated.

Functional additives complement the deodorizing function of activated carbon, and activated carbon is easy to remove aromatic compounds such as benzene and toluene, but there are some limitations in removing aldehydes such as acetaldehyde and formaldehyde, so it can be supplemented.

These functional additives have no inhalation toxicity and are easy to remove aldehydes, and may be at least one of zeolite, cyclodextrin, carbon fiber, and amine-weak acid-based compounds, but are not limited thereto.

To this end, the functional impregnating agent may be 1 to 10 parts by weight, based on 100 parts by weight of the pulp, and is preferably added in an amount of 8 parts by weight to the pulp.

At this time, if the functional additive is less than 1 part by weight, the supplemental effect of removing aldehydes is insufficient, and if it exceeds 10 parts by weight, the physical properties of the filter base paper containing activated carbon may be affected by lowering the bonding strength.

In addition, step S13 may be mixed by further adding a surfactant, a foam inhibitor, a dispersant, a degassing agent, and a coagulant to the pulp.

The surfactant is for improving the miscibility with the pulp, and may be one of a nonionic, cationic, and anionic type, and it is preferable to adjust the amount added according to the situation.

The anti-bubble agent improves the productivity of the filter base paper containing activated carbon, and 1 to 5 parts by weight may be added, and 3 parts by weight is preferably added based on 100 parts by weight of pulp.

At this time, when the bubble suppressant is less than 1 part by weight, the bubble suppressing effect may be insufficient, and when it exceeds 5 parts by weight, the physical properties of the filter base paper containing activated carbon may be lowered.

The dispersant improves dispersibility to facilitate mixing with the pulp. In 100 parts by weight of the pulp, 0.05 to 0.5 parts by weight may be added, and 0.1 parts by weight is preferably added.

At this time, if the dispersant is less than 0.05 parts by weight, the effect of improving dispersibility is insignificant, and if it exceeds 0.5 parts by weight, the physical properties of the filter base paper containing activated carbon may be rather deteriorated due to lower bonding properties.

The degassing agent effectively removes colloidal air from the pulp and eliminates the problems caused by removing air bubbles that may occur in the paper-filling step (S20).In 100 parts by weight of the pulp, 0.5 to 1.5 parts by weight may be added. It is preferable that, 1 part by weight is added.

At this time, when the degassing agent is less than 0.5 parts by weight, the bubble removing effect and the dehydration promoting effect are insignificant, and when it exceeds 1.5 parts by weight, the effect and economically inefficient may be.

The degassing agent is preferably a silicone-based degassing agent so as to exhibit an effective dehydration promoting effect, but is not limited thereto.

The coagulant improves the bonding strength, and in 100 parts by weight of the pulp, 0.1 to 1 part by weight may be added, and 0.5 parts by weight is preferably added.

At this time, when the coagulant is less than 0.1 parts by weight, the effect of improving the bonding strength is insignificant, and when it exceeds 0.5 parts by weight, productivity may be lowered.

As described above, in step S13, activated carbon, a binder, a functional additive, etc. are added to the beaten beaten pulp and mixed at a rotation speed of 600 rpm or higher for 10 minutes or more to prepare a raw material.

The paper-filling step (S20) is a step of forming a wetland peel from the raw material prepared in the step S10, and the raw material may be paper-filled to form a base paper.

Dehydration step (S30) is a step of dewatering by compressing the wetland peel formed in step S20, it may be dewatered in consideration of peelability.

The method for producing a filter paper containing activated carbon according to an embodiment of the present invention may further include a lamination step (not shown) before going to the drying step S40 after the dehydration step S30.

In the lamination step, a plurality of layers may be formed by laminating two or more layers of dehydrated paper after step S30.

In this way, by laminating two or more layers of paper through the lamination step and forming the filter base paper containing one activated carbon through the drying step (S40), the tear strength and bursting strength of the filter base paper containing the activated carbon It can be made to contain positive activated carbon.

The drying step (S40) is a step of drying the paper or the dehydrated paper in step S30 to prepare a filter base paper containing the final activated carbon.Because the deodorizing performance depends on the moisture content in the pores of the activated carbon having a porous structure. , By drying the dehydrated paper, excellent deodorizing performance can be displayed.

At this time, step S40 may be surface-dried at 100 to 120°C with a can dryer facility, and is preferably made at 110°C.

Here, when the drying temperature is less than 100°C, surface drying is not easily performed, and when the drying temperature exceeds 120°C, the base paper may become hard and break.

The coating step (S50) is a step of forming a coating layer by applying a functional adhesive to the surface of the filter base paper containing activated carbon prepared by drying in step S40, and is applied to the surface as well as the functional additive added during the raw material manufacturing. By forming the coating layer, the supplemental effect of removing aldehydes can be further maximized.

In step S50, the functional additive is coated on a filter base paper containing activated carbon at a rate of 40 to 60 m/min with a roll having a width of 1600 mm or more so that the functional additive is applied more evenly. Application is more preferable at a speed of 50 m/min.

The calendering step (S60) is a step of calendering the filter base paper containing activated carbon on which a coating layer is formed by coating a functional additive in step S50, and improves the strength and shape safety of the filter base paper containing activated carbon. Increase, and the adhesion of the coating layer can be improved.

In step S60, the filter base paper containing activated carbon may be calendered at a temperature of 100 to 140°C at a pressure of 0.05 to 0.1 MPa.

At this time, if the calendering temperature and time are less than 100°C or 0.05 MPa, the bonding force between the activated carbon and the fibers is weak, resulting in poor morphology and workability. If the calendering temperature and time exceeds 140°C or 0.1 MPa, cracks and damage may occur. .

In addition, a method for manufacturing a filter paper containing activated carbon according to an embodiment of the present invention may include a winding step (not shown) and a packaging step (not shown).

The winding step is a step of winding and collecting the filter base paper containing activated carbon prepared in step S40 by winding a roll or the like.

In the packaging step, the filter base paper containing the wound activated carbon can be packaged and protected from the outside to prevent damage and facilitate distribution.

It is possible to provide a filter base paper containing activated carbon prepared by the above production method.

The filter base paper containing such activated carbon includes pulp, activated carbon, a binder and a functional impregnating agent, and may have excellent deodorizing performance as well as excellent strength and quality.

Specifically, the filter base paper containing activated carbon may contain 70 parts by weight or more of activated carbon, 8 to 12 parts by weight of a binder, and 1 to 10 parts by weight of a functional impregnating agent in 100 parts by weight of pulp, in addition to a surfactant, a foam inhibitor , A dispersant, a degassing agent and a flocculant may be further included.

In addition, the filter base paper containing activated carbon may further include a coating layer formed by applying a functional additive to the surface.

In addition, the filter base paper containing activated carbon is characterized in that it is manufactured by stacking two or more layers of paper during manufacture, so that it can contain a large amount of activated carbon while improving tensile strength and bursting strength.

The filter base paper containing such activated carbon may be formed to have a thickness of 0.4 mm or more so as to be preferable for manufacturing a deodorizing filter.

As described above, the base paper for filters containing activated carbon and the manufacturing method thereof according to the embodiment of the present invention include pulp and activated carbon as main materials, and a binder and functional additives are added to the base paper through a wet-laid method. By manufacturing, it is possible to manufacture a high-quality product having excellent strength as well as deodorizing performance.

In addition, by simplifying the manufacturing process, manufacturing time and cost can be reduced.

In addition, there is an advantage that the addition of activated carbon, additives, etc. can be made stably, and the subsequent processability of the filter base paper containing activated carbon is easy.

In addition, it is expected to be applied to various fields such as consumables such as filters and sensors.

Hereinafter, the present invention will be described in more detail by examples.

However, the following examples are only illustrative of the present invention, and the contents of the present invention are not limited by the following examples.

[ Manufacturing example ]

[Production Example 1]

Put the pulp into water and dissociate it, and the dissociated pulp is beaten at a beating rate of 45°SR, and activated carbon and a binder are added to the beaten pulp to prepare a raw material, and then a wetland peel is formed as a raw material, and the wetland peel is compressed. After being dehydrated, the dehydrated paper was dried, and a raw paper sample for a filter containing 100×100 mm of activated carbon was prepared.

[Production Example 2]

The amine-based-weak acid group compound was sprayed three times in Preparation Example 1 and dried at room temperature for 12 hours to prepare a filter paper sample containing activated carbon.

[ Experimental example 1] Functionality To additives Deodorization performance evaluation

In order to evaluate the deodorization performance according to the functional additive, the ammonia and acetaldehyde removal efficiency of Preparation Examples 1 and 2 were measured by experimenting as follows.

Preparation Example 1 and Preparation Example 2 were each put into a Tedler bag (10L) and filled with ammonia and acetaldehyde, and the gas concentration was measured after 30 minutes.

The results are shown in Table 1 and FIG. 3 below.

Initial gas concentration Manufacturing Example 1 Manufacturing Example 2 Ammonia (ppm) 60 20 10 Acetaldehyde (ppm) 85 58 22

As can be seen from Table 1 and FIG. 3, it was confirmed that Preparation Example 2 improved both ammonia and acetaldehyde removal efficiency by 50% or more compared to Preparation Example 1. Accordingly, functional additives when preparing filter base paper containing activated carbon It was decided to apply (amine-based compound).

[ Example ]

[Example]

Put the pulp in water and dissociate it, and the dissociated pulp is beaten at a beating rate of 45°SR, and activated carbon, a binder, and a functional additive are added to the beaten pulp to prepare a raw material, and then a wetland peel is formed as a raw material. After dehydration by pressing the wet paper peel, dry the dehydrated paper at 110℃, and apply a functional additive with a roll of 1600mm or more at a speed of 50m/min to form a coating layer and calender at a temperature of 120℃ with a pressure of 0.1 MPa. Ring treatment was performed to prepare a filter base paper containing activated carbon.

Here, the activated carbon has a specific surface area of 800 m ² /g and an iodine adsorption power of 600 mg/g.

[Comparative Example 1]

Activated carbon was prepared in the same manner as in Example 1, except that a specific surface area of 529 m ² /g and an iodine adsorption power of 729 mg/g were used.

[Comparative Example 2]

Activated carbon was prepared in the same manner as in Example 1, except that a specific surface area of 460 m ² /g and an iodine adsorption power of 755 mg/g were used.

[Comparative Example 3]

Activated carbon was prepared in the same manner as in Example 1, except that activated carbon having a specific surface area of 509 m ² /g and an iodine adsorption power of 714 mg/g was used.

[Comparative Example 4]

Activated carbon was prepared in the same manner as in Example 1, except that a specific surface area of 450 m ² /g and an iodine adsorption power of 680 mg/g were used.

[Comparative Example 5]

Activated carbon was coated on paper, dried, and a binder was coated and dried to prepare a filter base paper containing activated carbon.

[ Experimental example 2] Evaluation of deodorizing performance of filter paper containing activated carbon according to activated carbon

In order to evaluate the deodorization performance of the filter base paper containing activated carbon according to the activated carbon, the experiment was performed as follows.

Examples and Comparative Examples 1 to 4 were cut into 10 X 10 cm, respectively, placed in a Tedler bag (10L), injected with gas, thermally compressed using a sealer, and measured the concentration of each gas after 30 minutes, The removal rate compared to the initial gas concentration was calculated and evaluated.

Here, ammonia, acetic acid, acetaldehyde, toluene, and formaldehyde were used as the gas used.

The results are shown in Table 2.

Iodine adsorption power (mg/g) Specific surface area (m ² /g) Deodorization performance gas Removal rate (%) Example 800 600 ammonia 92.1 Acetic acid 94.9 Acetaldehyde 80.0 toluene 86.7 Formaldehyde 94.5 Comparative Example 1 729 529 ammonia 83.9 Acetic acid 80.0 Acetaldehyde 70.5 toluene 82.9 Formaldehyde 87.5 Comparative Example 2 755 460 ammonia 83.9 Acetic acid 92.9 Acetaldehyde 59.0 toluene 81.6 Formaldehyde 89.3 Comparative Example 3 714 509 ammonia 87.1 Acetic acid 85.7 Acetaldehyde 60.3 toluene 84.2 Formaldehyde 88.1 Comparative Example 4 680 450 ammonia 82.0 Acetic acid 79.9 Acetaldehyde 55.8 toluene 80.3 Formaldehyde 85.7

As can be seen from Table 2, the examples show that the deodorizing performance is superior in all gases than Comparative Examples 1 to 4 using activated carbon having at least one of 700 mg/g of iodine adsorption and a specific surface area of 550 m ² /g. Could

[ Experimental Example 3] Evaluation of the deodorizing performance of the filter base paper containing activated carbon

The deodorization performance of the filter base paper containing activated carbon of Examples and Comparative Example 5 was measured and evaluated.

The results are shown in Table 3.

Gas type Initial concentration Example Comparative Example 5 ammonia 60 6 20 Acetic acid 66 6 11 Acetaldehyde 85 17 58 toluene 74 10 18 Formaldehyde 14.5 1.0 4.9

(Unit: ppm) As can be seen from Table 3, it was confirmed that the Example had superior removal performance for all gases than Comparative Example 5.

Accordingly, it is determined that the base paper of the activated carbon according to the embodiment of the present invention can contain a large amount of activated carbon (70 parts by weight or more), and thus has excellent gas removal performance.

The embodiments of the present invention described above can be implemented by various substitutions, modifications, and changes within the scope of the technical spirit of the present invention, and such implementation can be implemented by an expert in the technical field to which the present invention belongs from the description of the above-described embodiment. It is easy to implement.

Claims (12)

A raw material step of preparing a raw material using pulp, activated carbon, a binder, and a functional additive;
A paper peeling step of forming a wetland peel from the raw material;
Dehydration step of dehydrating by compressing the wetland peel and
Including a drying step of drying the dehydrated paper to prepare a filter paper containing activated carbon,
The raw material step,
A dissociation step of dissociating the pulp;
The confessing step to confuse the dissociated pulp and
Including a treaty step of adding and mixing activated carbon, a binder, and a functional additive to the beaten pulp,
The functional additive,
Including zeolite, cyclodextrin, carbon fiber and amine-based weak acid-based compounds,
The treaty stage,
A method for producing a filter base paper containing activated carbon, characterized in that 70 parts by weight or more of activated carbon, 8 to 12 parts by weight of a binder, and 1 to 10 parts by weight of a functional additive are added and mixed to 100 parts by weight of the beaten pulp.
delete The method of claim 1,
The confession step,
A method for producing a filter base paper containing activated carbon, characterized in that the dissociated pulp is beaten to a beating degree of 43 to 47° SR.
The method of claim 1,
The activated carbon,
It is one of coconut-based activated carbon, coal-based activated carbon, wood-based activated carbon and carbon black,
A method for producing a filter base paper containing activated carbon, characterized in that a specific surface area of 550m ² /g or more and an iodine adsorption capacity of 700mg/g or more.
The method of claim 1,
The binder,
Vinylon, acrylic, low melting point polyester (LMPET), polyethylene terephthalate (PET), and a method for producing a filter base paper containing activated carbon, characterized in that at least one of wood fibers.
delete delete delete The method of claim 1,
After the dehydration step,
A method for manufacturing a filter base paper containing activated carbon further comprising a lamination step of stacking two or more layers of the dehydrated paper.
The method of claim 1,
After the drying step,
A coating step of forming a coating layer by applying a functional additive to the filter paper containing the activated carbon, and
A method for producing a filter paper containing activated carbon, further comprising a calendering step of performing a calendering treatment on the filter paper containing the activated carbon coated with the functional additive.
In 100 parts by weight of pulp, including 70 parts by weight or more of activated carbon, 8 to 12 parts by weight of a binder and 1 to 10 parts by weight of a functional additive,
The functional additive,
Zeolite, cyclodextrin, carbon fiber, and amine-based filter base paper containing activated carbon, characterized in that it contains a weak acid-based compound.
The method of claim 11,
The filter base paper containing the activated carbon,
Base paper for filters containing activated carbon further comprising a coating layer formed by applying a functional additive to the surface.

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