WO2015016431A1

WO2015016431A1 - Fiberization method of knots derived from pulp, fiberized knots and paper products using same

Info

Publication number: WO2015016431A1
Application number: PCT/KR2013/010862
Authority: WO
Inventors: 박시한; 이종훈; 박현민
Original assignee: 무림피앤피 주식회사
Priority date: 2013-07-31
Filing date: 2013-11-27
Publication date: 2015-02-05

Abstract

The present invention relates to a fiberization method of knots for the reuse of undigested knots during the digestion of wood chips for manufacturing pulp outside a pulp production process, fiberized knots using same and paper products using the fiberized knots. By fiberizing and using knots, which have commonly been classified as waste and involve excessive cost to discard, in the production of paper products, the cost for discarding knots in a pulp process may be reduced, and the danger of degrading the final quality of pulp (when knots are recycled into pulp using a method of the prior art) may be reduced.

Description

Fibrosis method of knots derived from pulp, fiberized knots and paper products using same

The present invention relates to a fiberization method of knots recovered as a by-product during the pulp papermaking process, through which fiberized knots, and paper products using the fiberized knots.

Chemical pulp is generally produced through the process of cooking and bleaching wood chips. In the cooking process, cooking, separating and filtering without fibrosis is called knots. Dictionary means knots in wood knots or plurals, but knots in pulp paper are bundles of unsealed chips, wood knots, undissociated fibers that are not pulped after the pulp cooking process. It is common to name in-shive and other impurities rejected in the pulp cooking process.

In the conventional pulp cooking process, knots that were not cooked in the pulp cooking process were generally recovered and reused in the cooking process, but when the cooking process was performed again, there was a problem of re-injecting the chemicals used in the first cooking process. Even if the cooking process was repeated, there was a problem that the yield was low, which lowered the final quality of the pulp.

Furthermore, even when knots are not collected but not disposed of, the knots are classified as wastes, resulting in processing costs. Therefore, knots were not discarded, but were inevitably recovered in the cooking process and reused in the pulp production process.

Therefore, attempts are being made to recycle knots all over the world, and some use knots as raw materials for asphalt. However, unused knots are made into fibers and recycled into fibers for commercial paper making. There is no case that is used as raw material of paper product production.

Accordingly, the present invention has been made to solve such a conventional problem, a method of fiberizing knots derived from pulp to reuse knots that have not been kneaded in the pulp cooking process outside the pulp production process, and fiberized using the same. The purpose is to provide knots, and fiberized knots as raw materials for paper products.

In order to achieve the above object, the fiberization method of knots according to the present invention comprises a collection step of collecting undigested notes in the process of cooking wood chips to produce pulp; A grinding step of crushing the collected notes; A primary cleaner step of removing impurities of the ground notebook; And it is characterized in that it comprises a concentration step in which the notebook is subjected to the cleaner step is concentrated and the waste liquid is separated.

The collecting step may include a first collecting step in which a non-digested and separated note is collected on a screen in a process of cooking wood chips; And a second collecting step in which the collected notes are dehydrated to remove the black liquor.

In the second collecting step, the collected notebook may be dehydrated to have a water content of 1 to 50 parts by weight.

The grinding step may include a first grinding step in which the notebook, which has undergone the collection step, is pulverized by passing through a screen having a diameter of 11 to 17 mm installed in the grinder.

The screen of the first grinding step may be a screen having a diameter of 12 to 15mm.

The pulverizing step may further include a second pulverizing step in which the pulverized note is pulverized through a screen having a diameter of 8 to 11 mm installed in a pulverizer.

The screen of the second milling step may be a screen having a diameter of 9 to 10.5mm.

The primary cleaner step may include a first cleaner step in which the crushed notebook is diluted; And a second cleaner step in which impurities contained in the diluted notebook are removed.

In the first cleaner step, the note may be diluted to a concentration of 3 to 6 parts by weight.

In the second cleaner step, impurities included in the notebook may be removed by centrifugation.

In the concentration step, the notebook may be concentrated to a concentration of 25 to 35 parts by weight.

In addition, the fiberization method of the note may further include a pulper treatment step of dividing the note pulverized in the crushing step is separated into fibrous between the grinding step and the primary cleaner step.

The pulper treatment step may include a first pulper treatment step in which the ground notebook is diluted to a concentration of 4.5 to 6.5 parts by weight; And a second pulper treatment step in which the diluted notebook is separated into fibers by pulper.

In the second pulper treatment step, the diluted notes are 1 Pulper treatment for from 30 minutes.

In addition, the fiberizing method of the note may further include a deflake processing step of dispersing the bound fiber material by mixing and stirring the cleaner treated note using a deflake between the cleaner step and the concentration step.

The deflake processing step may use a bar type deflake having a bar spacing of 2 to 4 mm.

In addition, the fiberization method of the note may further include a secondary cleaner step of removing the foreign matter by diluting the deflake treated note, between the deflake processing step and the concentration step.

In the secondary cleaner step, the deflaked notebook may be diluted to a concentration of 0.5 to 2 parts by weight.

In addition, the fiberization method of the note further includes a pressure screening step between the first cleaner step and the concentration step, the foreign matter of the note that passed through the second cleaner step is further removed through the screen to improve the quality of the final fiber product. can do.

The diameter of the screen in the pressure screening step may be 0.2 to 0.4mm.

In addition, in order to achieve the above object, the fiberizing method of the notes according to the present invention is a collection step of collecting unexplained notes in the process of cooking wood chips to produce pulp; A grinding step of crushing the collected notes; A pulper treatment step of dividing the notes pulverized in the crushing step into fibrous phases; A primary cleaner step of removing impurities of the ground notebook; A deflake processing step of dispersing the bound fiber material by mixing and stirring the cleaner-treated note using a deflake; A secondary cleaner step of diluting the deflaked notebook to remove foreign substances; A pressure screening step in which foreign substances of the notebook which have undergone the cleaner step are further removed through the screen to improve the quality of the final fiber product; And it is characterized in that it comprises a concentration step in which the notebook is subjected to the cleaner step is concentrated and the waste liquid is separated.

In addition, in order to achieve the above object, the fiberized notebook according to the present invention is characterized in that the fiberized by the fiberizing method according to the present invention described above.

In addition, in order to achieve the above object, the paper product according to the invention is characterized in that it comprises a fiberized notebook according to the present invention described above.

The paper products may include industrial wipers, hand towels, napkins, tissues, industrial packaging paper, paper boards, commercial paper, and AFH products.

Through the fiberizing method of knots according to the present invention as described above, by treating the knots that are classified as conventional wastes and excessively consumed in processing, the knots can be utilized for a novel use as a raw material of paper products. Therefore, it is possible to reduce the disposal cost of the note in the pulp process, and lower the risk of lowering the final quality of the conventional pulp.

Furthermore, it is possible to reduce the waste of resources by producing paper products by fiberizing knots, which are essentially discharged from the pulp manufacturing process, without having to produce them separately.

First, the words used in the present specification are defined.

The 'pulp manufacturing process' refers to the process of manufacturing wood chips from wood, cooking, washing, first screening, bleaching, and second screening ( It is a process including screening), drying process and finishing process, and refers to a process for producing pulp, which is a raw material such as fiber or paper.

'Steaming' is a process that treats wood chips with chemicals and then boils them at high temperatures and / or high pressures to weaken lignin, which binds fibers to fibers. In the process of boiling, non-fibrous substances in plant raw materials are melted, and the fibers are separated in a relatively pure state.

Knots are unpulled pulped at the end of the cooking process during the pulp manufacturing process, unfiltered chips screened, wood knots, shived bundles of undissociated fibers, and rejected in the pulp cooking process. It means other impurities.

"Pulper" means a device for dissolving dry pulp, old paper, damaged paper, and the like into the pulp dispersion.

"Dissociation" is an essential step in the pulp manufacturing process, and means to separate the pulp material into fibrous form.

'Bonding fiber' refers to a bundle of yet less loose fibers in the pulp fibers that are the paper stock.

'Impurities' or 'foreign materials' refers to materials other than fibres in knots, and refers to black liquor, waste liquid, undissociated materials, stone powder, rubber, and other chemical components.

'Paper' means a small piece of paper.

'Black liquor' refers to blackish brown waste which is produced when cooking wood is pulp.

A "deflake" is a device that dissolves and dissociates raw fibers by mixing the raw fibers at high speed and stirring them.

'Paper products' include industrial wipers, hand towels, napkins, tissues, industrial packaging, paper boards, and AFH (Away From Home) products used in industrial or non-home use or in spaces used by many people.

The fiberizing method of knots according to the present invention includes a collection step of collecting unexplained notes in the process of cooking wood chips to produce pulp; A grinding step of crushing the collected notes; A primary cleaner step of removing impurities of the ground notebook; And it is characterized in that it comprises a concentration step in which the notebook is subjected to the cleaner step is concentrated and the waste liquid is separated.

According to an embodiment, the fiberization method of the knot according to the present invention may further include a pulper treatment step in which the knots pulverized in the crushing step are separated into fibrous phases between the crushing step and the first cleaner step.

In addition, according to one embodiment, the fiberizing method of the notebook according to the present invention is a mixture between the primary cleaner step and the concentration step, the primary cleaner-treated knot is mixed and stirred using a de-flake to disperse the bound fiber material The deflake processing step may be further included.

In addition, according to one embodiment, the fiberizing method of the notebook according to the present invention may further include a secondary cleaner step of removing the foreign matter by diluting the deflaked notebook between the deflake processing step and the concentration step. have.

In addition, according to another embodiment, the fiberizing method of the notebook according to the present invention, between the first cleaner step and the concentration step, to remove the foreign matter of the note that passed through the cleaner step through the screen to increase the quality of the final fiber product. The pressure screening step may be further included.

In addition, according to another embodiment, the fiberizing method of the notes according to the present invention is a collection step of collecting unexplained notes in the process of cooking wood chips to produce pulp; A grinding step of crushing the collected notes; A pulper treatment step of dividing the notes pulverized in the crushing step into fibrous phases; A primary cleaner step of removing impurities of the ground notebook; A deflake processing step of dispersing the bound fiber material by mixing and stirring the cleaner-treated note using a deflake; A secondary cleaner step of diluting the deflaked notebook to remove foreign substances; A pressure screening step in which foreign substances of the notebook which have undergone the cleaner step are further removed through the screen to improve the quality of the final fiber product; And it is characterized in that it comprises a concentration step in which the notebook is subjected to the cleaner step is concentrated and the waste liquid is separated.

Each step will be described below in order.

1. Collection stage

First, the collecting step includes a first collecting step of separating and collecting knots that have been filtered out on the screen by cooking the wood chips; And a second collecting step in which the collected notes are dehydrated to remove the black liquor.

The knots collected in the first collection step are collected together with the waste liquid of the chemical used in the pulp cooking process, so that the moisture content is high, but the knots having a moisture content of 70 parts by weight or more are inferior in mechanical treatment efficiency. . Therefore, dehydration work to separate the waste fluid from knots while lowering the water content to lower the water content to 50 parts by weight or less. It is preferable that moisture content is 1-50 weight part. Centrifugal dehydrator, screen, etc. may be used in the dehydration operation, but is not limited thereto. Dewatering wastewater is sent to a water treatment plant.

2. Crushing Step

The notes processed in the collecting step are pulverized through a pulverizer, and the moisture of knots is dried to 30 to 40 parts by weight through the pulverizing step. The pulverizer may be used without limitation, such as wood chip grinding (grinding) machine, a machine for crushing plastic, a machine for producing sawdust, a mixer-type machine, etc. used in the conventional pulp manufacturing process. However, when the grinding process of the conventional mechanical pulp process is used, power consumption of 1000 kW or more is low and economic efficiency is low.

The grinding step may be divided into two steps, the first grinding step and the second grinding step, depending on the size of the screen installed in the grinder to prevent carbonization of the note. The screen may be installed at the bottom of the mill, and is a device for filtering knots that have been milled.

Since the black liquor was removed from the collected notebook but contained water, there is a high possibility that the notebook containing the water stuck to the screen and the inner wall of the grinder during the grinding process to block the screen. Note that can not be discharged through the screen can be carbonized, if the carbonized note fiber may not be available for industrial paper and the like. Therefore, in order to prevent such carbonization, it is preferable to grind first using a screen of a larger size in the first grinding step, and then to grind using a screen of a smaller size in the second grinding step.

To this end, the diameter of the screen used in the first grinding step may be 11 to 17mm, preferably 12 to 15mm (￠, pie), more preferably 12mm in diameter can be used. If the diameter is smaller than 12mm, clogging occurs because the note containing water cannot pass. If the diameter is over 12mm, it passes smoothly. However, since most of the notebooks pass through without grinding when the diameter of the screen is 15 mm or more, it is preferable to use the diameter of the screen of 12 to 15 mm.

In the second grinding step, the diameter of the screen is smaller than that of the first grinding step so as to be 8 to 11 mm, preferably 9 to 10.5 mm, more preferably 10 mm in diameter. If the diameter is smaller than 9mm, the notebook cannot pass through and blockage occurs. If the diameter is 10.5mm or more, it passes without the second grinding step. Therefore, the diameter of the screen is 9 to 10.5mm, more preferably, 10mm in diameter. desirable.

In the crushing step, the dehydrated notebook may be crushed by a mixer-type device.

According to one embodiment of the invention, the grinding step may be composed of one step of grinding the note with a mixer without passing through the screen. As a mixer, a super mixer which is a mixer type device can be used.

3. Pulper Treatment Step

In the pulper treatment step, the pulverized note is diluted with a pulper to dissociate. Dissociation is an essential step in the pulp manufacturing process, and means to separate the pulp material into fibrous form. Pulper refers to an apparatus for dissolving dry pulp, old paper, damaged paper, and the like into a pulp dispersion. Pulper may use Intensa Pulper, which is commercially available from general paper companies.

In the pulper treatment step, the intensa pulper may be dissociated smaller than the size of the screen while crushing knots with a rotating screen and a circular screen facility of 3 to 6.5 pies. The note is diluted to a concentration of 4.5 to 6.5 parts by weight, preferably 5 to 6 parts by weight, in an intensa pulper, with a concentration of 5 to 6 parts by weight being the most effective. It is preferable that the notes are processed for 1 to 30 minutes in the intensa pulper, and there is no significant difference in the processing efficiency of the notes according to the processing time at 30 minutes or more.

4. Primary Cleaner Step

The primary cleaner step is a pulper treatment This process removes undissociated substances from the note or other impurities that may damage the equipment when entering the product manufacturing process, such as stone powder and rubber, by centrifugation in a high concentration cleaner. The primary cleaner step may include a first cleaner step in which the crushed notebook is diluted; And a second cleaner step in which impurities contained in the diluted notebook are removed.

The first cleaner step may dilute the notebook to a concentration of 3 to 6 parts by weight. When diluting, a high concentration cleaner may be used, and the high concentration cleaner may use, for example, an apparatus generally used in the paper industry as a high concentration cleaner.

In the second cleaner step, impurities included in the notebook may be removed by centrifugation. The undissociated knots in the impurities may be recovered and then transferred to the intensa pulper to be pulped again.

5. Deflake Processing Step

The deflake processing step is a step of adding the primary cleaner-treated notes to a deflaker, mixing and stirring at high speed, dispersing fiber material and dissociating undissolved paper chips. The deflaker has a blade-shaped rotating body therein and separates and dissociates the fiber material passing through the rotating body at high speed. In the case of using a bar type deflake, the dissociation effect is excellent when the bar spacing is 2 to 4 mm, and is most preferable at 3.0 mm.

6. Secondary cleaner step

The secondary cleaner step may dilute the notes and remove the foreign matter by centrifugation in order to remove the binding fibers remaining after the deflake processing. Lower the concentration compared to the primary cleaner stage. This is because large foreign substances have already been removed in the first cleaner stage. Binding fibers must be removed because they can degrade product quality or cause paper jams in paper manufacturing.

In the secondary cleaner stage, the cleaner may use a low concentration cleaner commonly used in the paper industry.

The note may be diluted to a concentration of 0.5 to 2 parts by weight in a low concentration cleaner, preferably to a concentration of 0.5 to 1 parts by weight.

7. Pressure Screening Step

In the pressure screening step, foreign matter may be further removed through the screen to improve the quality of the final fiber product in the cleaner treated notebook. In the pressure screening step, the pressure screen may use a pressure screen generally used in the paper industry. The diameter of the screen is preferably 0.2 to 0.4mm, more preferably a screen of 0.3mm can be used. Foreign materials may pass through the screen in the screen of 0.4 mm or more, and when the screen of less than 0.2 mm is used, the yield may be significantly reduced to less than 85% compared to the product quality improvement effect.

8. Thickener

In the concentration step, the fiberized notes can be concentrated while undergoing a cleaner step or a pressure screening step. At the same time, the waste liquid contained in the notebook can be separated. The thickener used in the thickening step may be a screw type thickener commonly used in the paper industry, for example, a screw press from Voith. In the concentration step, the notebook may be concentrated to a concentration of 25 to 35 parts by weight, preferably 30 parts by weight. Through the concentration step, finally fibrized knots can be obtained.

Knots fiberized by the fiberization method comprising the above steps can be used for the manufacture of paper products. The paper products may include industrial wipers, hand towels, napkins, tissues, industrial packaging paper, paper boards, commercial paper, and AFH products. AFH products are products excluding home use, and are products such as toilet paper, wipers, napkins, hand towels, etc., which are provided in public places, and include wipers used as a means for wiping machines or machine parts for industrial purposes.

Example 1 Fibrosis Method 1 of the Note (Gathering, Grinding, and Concentration)

In the process of cooking wood chips for pulp, knots separated on the screen are separated and the water content is reduced to 50 parts by weight using a centrifugal dehydrator.

The dehydrated notebook is crushed using a sawdust maker and passed through a 12 mm diameter screen.

The notebook is placed in a high-density cleaner (Voith), diluted to 4.5 parts by weight, and stone dust, rubber and binding fibers are removed.

The note is concentrated to a concentration of 30 parts by weight using a screw press (Voith). The waste liquor is separated through the screen of the concentrator to obtain fibrosis notes.

Example 2 Fibrous Method of Notebook 2

The dehydrated notebook is crushed using a sawdust maker and passed through a 12 mm diameter screen. It is then crushed again and passed through a 10 mm diameter screen.

Purified water was added to the pulverized notebook, diluted to 5.5 parts by weight, and placed in an Intensa pulper having a circular screen having a diameter of 5 mm, followed by dissociation for 20 minutes.

The dissociated notes are added to a high concentration cleaner (Voith), diluted to 4.5 parts by weight, and stone powder, rubber and binding fibers are removed.

Next, the notebook is placed in a deflaker with a bar spacing of 3 mm to disperse the binding fibers and dissociate the undissolved pieces (small pieces of paper).

The notebook dispersed in a deflake is added to a low concentration cleaner (Voith), diluted to 1.2 parts by weight, and the remaining binding fibers are removed.

Using a pressure screen (Voith, Inc.) with a screen size of 0.3 mm, the binding fibers and foreign substances are finally removed using pressure.

The notes processed in the pressure screen instrument are concentrated to a concentration of 304 parts by means of a screw press (Voith). The waste liquor is separated through the screen of the concentrator to obtain fibrosis notes.

Example 3 Manufacturing Method of Commercial Paper Making Products Comprising Fiberized Notebooks

After diluting the fiberized notebook according to Example 1 to 4 parts by weight, it was added to DDR (Rouble Disk Refiner) and subjected to beating treatment.

To compensate for the characteristics, 30 parts by weight of natural pulp was mixed with 70 parts by weight of a fiberized note.

The mixed natural pulp and fiberized note mixture was added to a low concentration cleaner (Voith, Inc.), diluted to 1.2 parts by weight, and foreign substances were removed.

The mixture passed through the low concentration cleaner was put in a pressure screen (Voith, Inc.) to remove foreign matter once more using pressure.

The mixture is introduced into a commercial papermaking machine and 0.9 parts by weight of fibers are injected through a head box of the machine. The injected fiber forms a paper-based sheet on the wire (forming step).

The paper-based paper formed on the wire has a water content of 40 parts by weight during the pressing step.

Commercial paper products were manufactured by passing through a dryer (Yankee Dryer) of the paper production machine to dry the moisture content of 4-7 parts by weight.

Example 4 Manufacturing Method of Commercial Paper Making Products Comprising Fibrous Notebooks

After diluting the fiberized notebook according to Example 2 to 4 parts by weight, it was added to DDR (Rouble Disk Refiner) and subjected to beating treatment.

Commercial paper products were manufactured by passing through a dryer (Yankee Dryer) of the paper production machine and dried to 5 parts by weight of water.

Example 5 A manufacturing method of an industrial wiper including a fiberized notebook

The fiberized notebook according to Example 2 was diluted to 4 parts by weight, and then subjected to beating treatment by adding to a Double Disk Refiner (DDR).

In order to supplement the characteristics, 30 parts by weight of natural pulp was mixed with 70 parts by weight of beaten fiberized notes.

The mixture is introduced into a tissue machine and a 0.9 weight part fiber is injected through a head box of the machine. The injected fiber forms a paper-based sheet on the wire (forming step).

It passes through the Yankee Dryer of the tissue machine and has a water content of 7 parts by weight. Finally, after forming the wrinkles on the paper by the clapping treatment, it was put into a fly machine to prepare an industrial wiper.

As described above, the knots are fiberized through the manufacturing method of the fiberized notes according to the present invention, and paper products are manufactured using the fiberized notes, thereby reducing the disposal cost of the notes in the pulp process and recycling them with conventional pulp. This can reduce the risk of degrading the final quality of the pulp.

Claims

A collection step of collecting unexplained notes in a process of cooking wood chips to produce pulp;

A grinding step of crushing the collected notes;

A primary cleaner step of removing impurities of the ground notebook; And

The fiber of the note characterized in that it comprises a concentration step of the concentrated notebook is subjected to the cleaner step and the waste liquid is separated.
The method according to claim 1,

The collecting step

A first collecting step of collecting the undigested notes on the screen by the wood chip cooking process; And a second collecting step in which the collected notes are dehydrated to remove the black liquor.
The method according to claim 2,

The second collecting step is a fiberization method of the note, characterized in that the collected notes are dehydrated so that the water content of 1 to 50 parts by weight.
The method according to claim 1,

The pulverizing step comprises a first pulverizing step of the crushed note is passed through a screen having a diameter of 11 to 17mm installed in the crusher.
The method according to claim 4,

The screen of the first milling step is a fiber of the note, characterized in that the screen of 12 to 15mm in diameter.
The method according to claim 4,

The grinding step may further comprise a second grinding step that the crushed note is crushed through a screen having a diameter of 8 to 11mm installed in the crusher.
The method according to claim 5,

The screen of the second milling step is a fiber of the note, characterized in that the screen of 9 to 10.5mm in diameter.
The method according to claim 1,

The primary cleaner step is

A first cleaner step in which the ground notebook is diluted; And

And a second cleaner step of removing impurities contained in the diluted notebook.
The method according to claim 8,

The first cleaner step is a fiber of the note, characterized in that the note is diluted to a concentration of 3 to 6 parts by weight.
The method according to claim 8,

The second cleaner step, the fiber of the note characterized in that the impurities contained in the note is removed by centrifugation.
The method according to claim 1,

The concentration step is a fiber of the note characterized in that the notebook is concentrated to a concentration of 25 to 35 parts by weight.
The method according to claim 1,

The fiberization method of the note is between the grinding step and the primary cleaner step,

And a pulp treatment step of diluting the notes pulverized in the crushing step and separating them into fibrous forms.
The method according to claim 12,

The pulper treatment step may include a first pulper treatment step in which the ground notebook is diluted to a concentration of 4.5 to 6.5 parts by weight; And a second pulper treatment step in which the diluted notebook is separated into fibrous by pulper.
The method according to claim 13,

The second pulper treatment step is diluted notes 1 The fiberizing method of the note, characterized in that the pulp treatment for 30 minutes.
The method according to claim 1,

The fiberization method of the note is between the cleaner step and the concentration step,

And a deflavor treatment step of dispersing the bound fiber material by mixing and stirring the primary cleaner-treated note using a deflake.
The method according to claim 15,

The deflake processing step is a fiberizing method of the note, characterized in that using a bar-type deflake having a bar interval of 2 to 4mm.
The method according to claim 15,

The fiberizing method of the note is between the deflake processing step and the concentration step,

And a secondary cleaner step of diluting the deflaked note to remove foreign matters.
The method according to claim 16,

In the secondary cleaner step, the fiber of the note, characterized in that the deflake-treated note is diluted to a concentration of 0.5 to 2 parts by weight.
The method according to claim 1,

The fiberization method of the note between the first cleaner step and the concentration step,

And a pressure screening step of further removing the foreign matters of the note that passed through the cleaner step through the screen in order to increase the quality of the final fiber product.
The method according to claim 19,

The diameter of the screen in the pressure screening step is a fiber of the note, characterized in that 0.2 to 0.4mm.
A collection step of collecting unexplained notes in a process of cooking wood chips to produce pulp;

A grinding step of crushing the collected notes;

A pulper treatment step of dividing the notes pulverized in the crushing step into fibrous phases;

A primary cleaner step of removing impurities of the ground notebook;

A deflake processing step of dispersing the bound fiber material by mixing and stirring the cleaner-treated note using a deflake;

A secondary cleaner step of diluting the deflaked notebook to remove foreign substances;

A pressure screening step in which foreign substances of the notebook which have undergone the cleaner step are further removed through the screen to improve the quality of the final fiber product; And

The fiber of the note characterized in that it comprises a concentration step of the concentrated notebook is subjected to the cleaner step and the waste liquid is separated.
A fibrosis note, characterized in that fiberized by the method according to any one of claims 1 to 21.
Paper product comprising the fiberized notebook according to claim 22.
24. The paper product of claim 23, wherein the paper product comprises an industrial wiper, a hand towel, a napkin, a tissue, an industrial packaging paper, a paper board, a commercial paper, and an AFH product.