KR20220061314A - Tissue manufacturing system using old corrugated container and used paper and tissue manufacturing method using the same - Google Patents

Abstract

The present invention relates to a tissue paper manufacturing system using corrugated cardboard and old paper as raw materials. The tissue paper manufacturing system comprises: a pulper unit (110) in which a raw material is dissociated under a preset condition; a first screen unit (120) which allows the raw material to form a first processing state by removing foreign substances having a size greater than or equal to a predetermined size contained in the dissociated raw material received from the pulper unit (110); a first processing unit (130) which allows the raw material to form a second processing state by removing printing ink materials included in the raw material in the first processing state received from the first screen unit (120); a bleaching tower unit (140) which allows the raw material to form a third processing state by bleaching the raw material having been subjected to the first processing unit (130); a second screen unit (150) which allows the raw material to form a fourth processing state by filtering the raw material having been subjected to the bleaching tower unit (140); a forward cleaner unit (160) which allows the raw material to form a 5a processing state by removing deposited foreign substances from the raw material in the fourth processing state received from the second screen unit (150); a reverse cleaner unit (165) which allows the raw material to form a 5b processing state by removing floating foreign substances from the raw material in the fourth processing state received from the second screen unit (150); and a storage unit (170) in which the raw material in the 5a processing state or the 5b processing state having been subjected to the forward cleaner unit (160) and the reverse cleaner unit (165) are finally stored.

Description

Tissue manufacturing system using corrugated cardboard and old paper as raw materials, and a tissue manufacturing method using the same

The present invention relates to a tissue manufacturing system and a tissue manufacturing method using the same, and more particularly, to a system and method using corrugated cardboard and old paper as raw materials.

Recently, the importance of recycling low-grade waste paper continues to increase. Currently, various wastes are generated in Korea, but OCC (Old Corrugated Containers) accounts for about 65%, making up the majority. In the case of waste corrugated cardboard, most of what is generated in Korea is recycled and used. Whenever waste corrugated cardboard is recycled, foreign substances such as wood flour are mixed in order to increase drying efficiency and reduce energy at the same time in the recycling and recovery process. In addition, in the process of corrugated cardboard production, when producing liner paper, since foreign substances are mixed to improve the volume, the quality of the waste corrugated cardboard gradually deteriorates and a large amount of foreign substances are mixed, so the process of removing foreign substances in the corrugated cardboard is essential.

If various foreign substances such as foreign substances floating and sedimenting in the raw material, ink substances, and pitch substances are not removed, many problems occur in the papermaking process of manufacturing tissues. For example, there may be damage to the papermaking process equipment, which causes problems such as cost increase and productivity decrease.

As a prior art, Korean Patent No. 10-0810713 is disclosed. The prior art relates to a method for producing a pulp raw material from recycled waste paper, a bleaching process (S1), a foreign material removal process (S2), a dehydration process (S3), a washing and dehydration process (S4), and a molding process (S5) A method for producing a raw material for pulp through the process of is disclosed. However, in the above technology, only the foreign material removal process (S2) of filtering foreign substances with the mesh is started, and the foreign material passing through the mesh cannot be removed. Foreign substances that are not removed may cause problems such as damage to equipment.

In addition, Korean Patent Registration No. 10-0957650, relates to a method for manufacturing a tissue using corrugated cardboard as a raw material, and discloses a method for removing various foreign substances. However, in consideration of the characteristics of the raw material according to the composition ratio of the raw material, the point of efficiently removing foreign substances by selecting a treatment process suitable therefor has not been disclosed. In particular, the waste corrugated cardboard contains a large number of foreign substances exceeding the specific gravity of 1, but a method of removing the foreign substances having a specific gravity of less than 1 in the low-density cleaner 124 is disclosed, and the foreign substances in the raw material cannot be effectively removed. This causes damage to the papermaking process equipment, and there is a problem of cost increase and productivity decrease. In addition, the prior art uses a steel blade (steel blade), such a steel blade takes a lot of labor and cost in the process of use. In particular, when a lot of ash is contained in the papermaking process, there is a problem of adversely affecting Y/D damage, dehydration process and peeling.

(Patent Document 1) Korean Patent No. 10-0810713

(Patent Document 2) Korean Patent 10-0957650

The present invention has been devised to solve the above problems.

Specifically, in using corrugated cardboard and old paper as raw materials, it is intended to provide a tissue manufacturing system capable of a suitable treatment process in consideration of the characteristics of the raw material according to the raw material composition ratio.

In addition, in the tissue manufacturing system using corrugated cardboard and old paper, through a selection process that can effectively remove various foreign substances accompanying raw materials, tissue manufacturing that can minimize problems such as equipment damage due to foreign substances during the papermaking process We want to provide a system.

An embodiment of the present invention for solving the above problems is a tissue manufacturing system including corrugated cardboard and old paper as raw materials, in which raw materials in a dry state are stored, and the pulper unit 110 in which the raw materials are dissociated under a preset condition. ); As the first screen unit 120 receiving the raw material in a dissociated state from the pulper unit 110 , a hole is provided, and by pressing the raw material and filtering the raw material through the hole, foreign substances having a size larger than a predetermined size contained in the raw material are removed. By doing, the first screen unit 120 to form the raw material in a first processing state; As a first processing unit 130 receiving the raw material in the first processing state from the first screen unit 120, by removing the ink material and the pitch material contained in the raw material, the raw material is formed in the second processing state the first processing unit 130; a bleaching tower unit 140 for bleaching the raw material that has passed through the first processing unit 130, the bleaching tower unit 140 for forming the raw material in a third treatment state; As a second screen unit 150 for filtering raw materials that have passed through the bleaching tower unit 140 , a slot having a smaller cross-sectional area than a hole provided in the first screen unit 120 is provided, and the slot has the By passing the raw material, the second screen unit 150 to form the raw material in a fourth processing state; The forward cleaner unit 160 receives the raw material in the fourth processing state from the second screen unit 150 and removes the precipitated foreign substances among the foreign substances contained in the raw material, thereby forming the raw material in the 5a processing state. ); The reverse cleaner unit 165 receives the raw material in the fourth processing state from the second screen unit 150 and removes floating foreign substances among foreign substances contained in the raw material, thereby forming the raw material in the 5b processing state. ); and a storage unit 170 in which the raw material in the 5a processing state or 5b processing state that has passed through the forward cleaner unit 160 and the reverse cleaner unit 165 is finally stored, and the second screen unit Reference numeral 150 provides a tissue manufacturing system configured to supply the raw material in the fourth processing state that has passed through the slot to at least one of the forward cleaner 160 and the reverse cleaner 165 .

In addition, as the pressure dehydration unit 131 provided between the first processing unit 130 and the bleaching tower unit 140 , the first processing unit 130 receives the raw material in the second processing state, and pressurizing By removing the ink material and the pitch material again, the pressurized dehydration unit 131 for forming the raw material in the second a processing state; and a second processing unit 166 provided on the front end of the storage unit 170, which receives the raw material in the 5a or 5b processing state from the forward cleaner unit 160 or the reverse cleaner unit 165. a second processing unit 166 for forming the raw material in a sixth processing state by removing the pitch material and spots; It is preferable to further include

In addition, as the kneader unit 132 receiving the raw material in the 2a processing state from the pressure dehydration unit 131, by dispersing the remaining ink material and the pitch material contained in the raw material in the 2a processing state, the raw material is 2b to form a processing state, the kneader 132; and a floater unit 141 provided between the bleaching tower unit 140 and the second screen unit 150 and receiving the raw material in the third processing state from the bleaching tower unit 140, a plotter unit 141 for removing the remaining ink material and the pitch material contained in the raw material in the third processing state by using air bubbles; It is preferable to further include

In addition, the second screen unit 150 includes a second screen unit storage tank 151 provided at the rear end, and the second screen unit storage tank 151 passes through the second screen unit 150 . It is preferable that the raw material in the fourth processing state is temporarily stored.

In addition, the forward cleaner unit 160 is sequentially composed of first to third forward cleaners 161, 162, and 163, and the first forward cleaner 161 contains a predetermined foreign material among the raw materials in the fourth processing state. It is configured to be primary precipitation, and the remainder is supplied to the second processing unit 166 except for the primary precipitation material, and the second forward cleaner 162 is configured to receive the primary precipitation from the first forward cleaner 161 . A material is provided, and a predetermined foreign material among the primary sedimentation material is secondary precipitated, and the remainder except for the secondary sedimentation material is formed to be circulated to the second screen unit storage tank 151, and the third forward cleaner 163 is configured to receive the secondary precipitation material from the second forward cleaner 162, and a predetermined foreign material among the secondary precipitation materials is tertiarily precipitated, and the remainder except for the tertiary precipitation material is the second precipitation material. It is preferable that the two forward cleaners 162 are circulated.

In addition, the present invention provides a tissue manufacturing method using corrugated cardboard and old paper according to the tissue manufacturing system described above, wherein (a) the pulper unit 110 stores a dry raw material, and dissociates the raw material to a preset condition. making (S10); (b) the first screen unit 120 provided with the hole receives the raw material in a dissociated state from the pulper unit 110, pressurizes the raw material and filters it through the hole, Forming the raw material in the first processing state by removing the foreign material larger than the size (S20); (c) the first processing unit 130 receives the raw material in the first processed state from the step (b) (S20) and removes the ink material and the pitch material contained in the raw material, thereby producing the raw material 2 to form a process state (S30); (d) the bleaching tower unit 140 receives the raw material that has undergone the step (c) (S30), and performs bleaching of the raw material, thereby forming the raw material in a third treatment state (S40) ; (e) the second screen unit 150 filters the raw material that has passed through the bleaching tower unit 140, and a slot having a smaller cross-sectional area than the hole provided in the first screen unit 120 is provided. , by passing the raw material through the slot, forming the raw material in a fourth processing state (S50); (f) the forward cleaner unit 160 receives the raw material in the fourth processing state from the step (e) (S50), and removes the precipitated foreign substances among the foreign substances contained in the raw material, thereby removing the raw material 5a forming the process state (S60); (g) the reverse cleaner unit 165 receives the raw material in the fourth processing state from the step (e) (S50) and removes floating foreign substances among foreign substances contained in the raw material, thereby removing the raw material 5b forming a process state (S65); and (h) finally storing, by the storage unit 170, the raw material in the 5a processing state or 5b processing state that has passed through the forward cleaner 160 and the reverse cleaner 165 (S70) It provides a tissue manufacturing method comprising a.

In addition, as the third screen unit 180 receiving the raw material in the 5a processing state or the 5b processing state from the storage unit 170 , a hole is provided, and the raw material is filtered by pressing the raw material into the hole. a third screen unit 180, which forms the raw material in a seventh processing state by removing foreign substances having a size greater than or equal to a preset size contained in the ? A paper writing forming unit 190 that receives the raw material in the seventh treatment state from the third screen unit 180, and by spraying the raw material on the surface of the wire 201, the raw material is formed in the eighth treatment state, Paper writing unit 190; and a drying unit 200 that receives the raw material in the eighth processing state from the paper writing forming unit 190 and dries and separates the raw material, wherein the drying unit 200 has a preset bevel angle. It includes a ceramic blade 202 that can be fixed to a furnace, and the ceramic blade 202 preferably separates the raw material from the wire 201 .

In addition, it is preferable that the ceramic blade 202 forms wrinkles of the tissue and adjusts the bevel angle to adjust the degree of wrinkles of the tissue.

In addition, it is preferable to spray the raw material in the seventh processing state on the surface of the wire 201 in the paper writing forming unit 190 and recycle the remaining raw material.

In addition, the present invention provides a tissue manufacturing method using corrugated cardboard and old paper according to the tissue manufacturing system described above, wherein (i) the third screen unit 180 receives the 5a processing state or the first 5b receiving the raw material in the treated state, pressurizing the raw material and filtering the hole through the hole to remove foreign substances having a size greater than or equal to a predetermined size included in the raw material, thereby forming the raw material in the seventh treated state (S80); (j) the paper writing unit 190 receives the raw material in the seventh processing state from the step (i) (S80), and sprays the raw material onto the surface of the wire 201, thereby dispensing the raw material into the eighth forming in a processed state (S90); (k) the drying unit 200 is provided with the raw material in the eighth processing state from the (j) step (S90), and provides a tissue manufacturing method comprising the step (S100) of drying and separating the raw material do.

According to an embodiment of the present invention, the following effects are obtained.

First, in using corrugated cardboard and old paper as raw materials, it is possible to provide a tissue manufacturing system capable of a suitable treatment process in consideration of the characteristics of the raw material according to the raw material composition ratio.

Second, in the tissue manufacturing system using corrugated cardboard and old paper, it is possible to minimize problems such as equipment damage due to foreign substances during the papermaking process by going through a selection process that can remove various foreign substances accompanying raw materials.

1 is a conceptual diagram of a tissue manufacturing system according to the present invention.
2 is a flowchart showing the flow of the main process of the tissue manufacturing system according to the present invention.
3 is a conceptual diagram of a forward cleaner according to the present invention.
4 is a conceptual diagram of a drying unit in the present invention.
5 is a flowchart showing the flow of the main process in the tissue manufacturing method according to the present invention.

Below. With reference to the drawings, a tissue manufacturing system using corrugated cardboard and old paper as raw materials according to the present invention and a tissue manufacturing method using the same will be described in detail. Among the terms used in this specification, 'system' means a thing.

The tissue manufacturing system includes a raw material composition process for composing a raw material for tissue, and a papermaking process for manufacturing tissues by dehydrating and drying the raw material on which the raw material composition process has been completed.

The tissue includes a rolled tissue, a hand towel, a multipurpose towel, and the like.

A tissue manufacturing system according to the present invention will be described with reference to FIGS. 1 to 2 .

In the raw material composition process, the pulper unit 110 , the first screen unit 120 , the first processing unit 130 , the bleaching tower unit 140 , the second screen unit 150 , the forward cleaner unit 160 , the reverse It includes a cleaner unit 165 and a storage unit 170 .

The pulper unit 110 stores the raw material in a dry state, and the raw material is dissociated under a preset condition. The raw material is preferably a mixture of corrugated cardboard (60 to 100%) and old paper (0 to 40%). Paper includes recycled fibers such as office paper (SOP, Sorted Office Paper), and corrugated cardboard, old corrugated cardboard (OCC, Old Corrugated Containers) may be used.

OCC raw material may be used alone, but it is also possible to use it by mixing with high fat. The oil absorption rate was 18.3 seconds when only dried meat was produced as a single raw material, and 13.2 seconds when a raw material mixed with corrugated cardboard and dried paper was produced. % outstanding. Therefore, in consideration of the strength and oil absorption rate of the tissue, it is preferable to mix long-fiber paper (meaning a fiber having a relatively long fiber length compared to OCC raw material) and short-fiber corrugated cardboard in the above ratio.

The pulper unit 110 dissociates the raw material mixed with corrugated cardboard and paperboard, and an example of the dissociation condition is as follows. The dissociation concentration is preferably 8% to 10%, and the dissociation time is preferably 10 to 15 minutes. If dissociation is performed for less than 10 minutes, dissociation may not occur or fiber aggregation may occur. On the other hand, if dissociation proceeds for more than 15 minutes, physical properties may be deteriorated due to excessive friction between fibers.

The pulper 110 is a process for extracting fibers of corrugated cardboard and old paper. The pulper unit 110 may include a continuous pulper 111 , a discontinuous pulper 112 , a high concentration cleaner 113 , and a pulper storage tank 114 . The raw material in a dry state is provided, and dissociated under a preset condition in the pulpers 111 and 112 . The number of pulpers 111 and 112 is not limited. The pulpers 111 and 112 may include a continuous pulper 111 and a non-continuous pulper 112 . In the continuous type pulper 111, the raw material is continuously input from one side, and the dissociated raw material is provided to the pulper unit storage tank 114 from the other side at the same time. The discontinuous pulper 112 may supply the raw material to be dissociated, and when dissociation is completed, the raw material may be provided to the pulper unit storage tank 114 through the high-concentration cleaner 113 . The raw material dissociated through the continuous pulper 111 or the discontinuous pulper 112 may be stored in the pulper unit storage tank 114 . Before being provided to the pulper unit storage tank 114, a storage tank (not shown) for temporary storage may be added. The pulper unit storage tank 114 may stably supply the dissociated raw material to the first screen unit 120 , which is the next process. Here, the first screen unit 120 may include a hole screen process and a slot screen process as described above. A storage tank serving as the pulper storage tank 114 may be added, and the location of the storage tank in the process is not limited.

The raw material in a state in which the fiber materials contained in the raw material are sufficiently dissociated in the pulper unit 110 is provided to the first screen unit 120 . The first screen unit 120 is a process for removing foreign substances having a size larger than a preset size, and a hole is provided, and the raw material provided from the pulper unit 110 is pressed and filtered through the hole. Foreign substances larger than the size of the hole can be removed because they do not pass through the hole. The foreign substances to be removed are stiff fibers with poor fiber flexibility, such as wood flour. That is, it means a large foreign material such as undissociated or plastic paper. Meanwhile, the raw material passing through the hole is provided to the first processing unit 130 in a first processing state. Foreign substances that do not pass through the hole pass through a level box (not shown) and are transferred to a reject sorter (not shown). As the first screen unit 120 , a hall screen and a slot screen that are generally used may be used. That is, after the slot screen is used for the first screen unit 120 , the process may proceed to the first processing unit 130 .

The first processing unit 130 is a process for removing the ink material and the pitch material contained in the raw material, and the roller is given a rotational force of 720 RPM or more to remove the ink material and the pitch material in the process of primary dehydration by the primary centrifugal force is possible In this way, although the ink material and the pitch material are removed in the first processing unit 130 , all high-density foreign substances are also removed in this process.

An ink material and a pitch material are removed from the raw material in the first processing state provided by the first screen unit 120 through the first processing unit 130 . The raw material from which the ink material and the pitch material are removed may be provided to the pressure dehydration unit 131 through a mixing storage tank (not shown) in the second processing state. Here, it is preferable that high-density foreign substances are additionally removed from the first screen unit 120 in addition to the ink material and the pitch material.

The pressurized dehydration unit 131 is a process of removing ink material and pitch material through a pressurizing process for the incoming raw material based on a pair of rollers. The pressure dehydration unit 131 pressurizes the raw material in the second processing state provided from the first processing unit 130 to remove the ink material and the pitch material again, thereby forming the raw material in the second processing state. The raw material in the 2a processing state may be provided to the kneader unit 132 .

The kneader unit 132 is a process of removing the ink material and the pitch material embedded in the fibers by causing friction between the fibers. That is, it is a process of pulverizing through heat and pressure. By dispersing the remaining ink material and the pitch material contained in the raw material in the 2a processing state provided by the pressure dehydration unit 131, the raw material is formed in the 2b processing state. The raw material in the 2b processing state may be provided to the bleaching tower unit 140 .

The bleaching tower unit 140 is basically a process of bleaching raw materials. By bleaching the raw material that has passed through the first processing unit 130 , the raw material is formed in the third processing state. The raw material in the third processing state may be provided to the plotter unit 141 . However, the bleaching material may not be added to the bleaching tower unit 140 , and in this case, the raw material may be configured to simply pass through the bleaching tower unit 140 . In the aforementioned kneader unit 132, the raw material is subjected to a high-temperature and high-pressure process, and while staying in the bleaching tower unit 140 for a predetermined time, the fiber swells and the hydrophobic material attached to the fiber is easily separated. can be That is, in the bleaching tower unit 140, the bleaching process may be performed depending on whether or not the bleaching material is input, otherwise, it may be configured such that only the swelling role is performed.

The plotter unit 141 is a process of removing the remaining ink material and the pitch material included in the raw material. By removing the remaining ink material and the pitch material included in the raw material in the third processing state provided from the bleaching tower unit 140 , it may be provided to the second screen unit 150 .

The second screen unit 150 is a process of removing foreign substances by passing a raw material through a slot. The slot has a smaller cross-sectional area than the hole provided in the first screen unit 120 . By filtering the raw material that has passed through the plotter unit 141 in the slot, the raw material is formed in the fourth processing state. The raw material in the fourth processing state passes through a storage tank (not shown) located between the second screen unit 150 and the forward cleaner 160 and the reverse cleaner 165 to the forward cleaner 160 or the reverse cleaner 165 . ) can be provided. At this time, the second screen unit 150 may proceed as a tertiary process as shown in FIG. 1 , but the order may be appropriately adjusted according to a designer's selection.

According to the ratio of corrugated cardboard and paperboard, consider the characteristics of the raw material and select a process suitable for it. When there are many heavy foreign substances exceeding specific gravity 1, such as silicon component and sand in the raw material, it is preferable to proceed with the forward cleaner unit 160 process. When there are many light foreign substances with a specific gravity of less than 1, such as fine vinyl, in the raw material, it is preferable to proceed with the reverse cleaner unit 165 process.

The forward cleaner 160 is a process of removing the precipitated foreign substances among the foreign substances contained in the raw material. The second screen unit 150 removes the precipitating foreign substances among the foreign substances contained in the raw material in the fourth processing state provided by the second screen unit 150 to form the raw material in the fifth processing state. The raw material in the fifth processing state may be provided to the second processing unit 166 .

The reverse cleaner unit 165 is a process of removing floating foreign substances from among the foreign substances contained in the raw material. This is an appropriate process to remove adhesive foreign substances (eg, sticky) and micro vinyl when processing raw materials (milk packs, paper cups, etc.) laminated with composite vinyl. The floating foreign substances among the foreign substances included in the raw material in the fourth processing state provided by the second screen unit 150 are removed to form the raw material in the fifth processing state. The raw material in the fifth processing state may be provided to the second processing unit 166 .

The second processing unit 166 is a cleaning process, which is a process of removing high specific gravity foreign substances and removing residual pitch material and spots included in the raw material. By receiving the raw material in the 5a or 5b treatment state from the forward cleaner 160 or the reverse cleaner 165 and removing the remaining pitch material and spots with water, the raw material is returned to the sixth treatment state by using the force of the drop. can be formed. The raw material in the sixth processing state may be provided to the storage unit 170 . For reference, as the second processing unit 166 facility, washing facilities including DNT, a fall washer, a two drum thicknesser, etc. may be used.

The storage unit 170 may store the raw material in the sixth processing state in which the raw material composition process is completed. By providing the storage unit 170, the raw material in the sixth processing state, the raw material composition is completed, is waited until the papermaking process starts, or the raw material flowing to the rear end of the storage unit 170, that is, the papermaking process, is stably supplied. can In addition, even if an abnormality occurs in the flow at the front end of the storage unit 170 , it may play a role of mitigating an impact caused by the abnormality.

The papermaking process includes a third screen unit 180 , a paper writing unit 190 , and a drying unit 200 .

Regarding the water treatment method of the papermaking process, the method of manufacturing tissue fabric made of raw material and papermaking mainly removes foreign substances through dehydration and dilution. Accordingly, water managed from the raw material and water quality from the grassland side are also very important process control factors, so it is desirable to manage separately, not mix (shared) water used in the raw material and water used in the papermaking side.

In more detail, the concentration of the paper pen forming part 190 on the paper side is less than about 0.2%, and since the amount of water used is large, foreign substances in water, ink that are not selected in papermaking, and pitch materials in a floating manner, coagulant and coagulant It is configured to select water using

In order to minimize the user's inconvenience such as tearing of the tissue during the process of wiping water and foreign substances, in order to increase the strength of the tissue, in the papermaking process, a wettability enhancer for each material may be added to the raw material.

The third screen unit 180 is a process of removing foreign substances having a size larger than a preset size included in the raw material. The raw material may be contaminated or the wire (or felt) of the drying unit 200 may be damaged by foreign substances not previously removed in the raw material composition process or foreign substances introduced into other paths. Accordingly, the third screen unit 180 process is performed in order to rewire the foreign material. Prior to the third screen unit 180 , a storage tank (not shown) may be added. The raw material in the sixth treatment state is provided from the storage unit 170 of the raw material composition process, and the raw material is pressurized and filtered through the hole, thereby forming the raw material in the seventh treatment state. The raw material in the seventh processing state is provided to the paper writing forming unit 190 .

The paper writing forming unit 190 is a process of spraying the raw material onto the surface of the wire 201 of the drying unit 200 . By receiving the raw material in the seventh treatment state from the third screen unit 180 and spraying the raw material on the surface of the wire 201 , the raw material is formed in the eighth treatment state. The raw material in the eighth processing state is provided to the drying unit 200 . Specifically, after passing through the pressure screen, the raw material is injected into the wire of the paper writing forming unit 190 , and then it may be provided to the drying unit 200 to be described later through a wire-felt.

On the other hand, since the wire 201 is in the form of a mesh, holes through which moisture can escape are formed, and short fibers in the raw material can pass through the wire 201 together with moisture. Short fibers may be included in the material that is not loaded on the wire 201 and is dropped off in the process of being sprayed onto the wire 201 by the paper writing forming unit 190 . Therefore, in order to recycle the discarded short fibers and use them as raw materials, the floating flotation is separately treated to remove the precipitated foreign substances, and the fibers can be recycled with the polymer of the coagulant and the coagulant. By treating such a process, the yield can be increased. That is, it is possible to select white water through flotation without recycling fibers. For reference, the coagulant and the coagulant serve to help agglomerate and remove hydrophobic materials such as ink.

The drying unit 200 is a step of drying the raw material loaded on the wire 201 and separating the dried raw material from the wire 201 . That is, it is a process of drying the dehydrated raw material after passing through the wire and the felt, and separating the dried raw material (paper paper) from the drying unit 200 . The raw material in the eighth processing state formed from the paper writing unit 190 is dried, and the dried raw material is separated from the wire 201 using the ceramic blade 202 . The drying unit 200 will be described in detail below.

The forward cleaner unit 160 will be described in detail with reference to FIG. 3 . By the forward cleaner unit 160, the raw material corrugated cardboard contains a large number of foreign substances such as silicon component having a specific gravity exceeding 1. In order to remove foreign substances using the precipitation feature, the following process is performed.

First, the second screen unit 150, which is a front stage of the forward cleaner unit 160, includes a second screen unit storage tank 151 provided on the rear end side, and the second screen unit storage tank 151 includes a second screen. The raw material in the fourth processing state that has passed through the unit 150 may be stored.

The second screen unit storage tank 151 may serve as a buffer. By providing the second screen unit storage tank 151 , the raw material flowing to the rear end of the second screen unit storage tank 151 may be stably supplied. That is, even if an abnormality occurs in the flow at the front end of the second screen unit storage tank 151 , it is possible to play a role of mitigating the shock generated by the abnormality.

The forward cleaner unit 160 is sequentially composed of first to third forward cleaners 161, 162, and 163, and the first forward cleaner 161 stirs the raw material in the fourth processing state while stirring the raw material in the fourth processing state, and a predetermined foreign material among the raw materials. This may be configured to primary precipitation. The remainder except for the primary sedimentation material is formed to be supplied to the second processing unit 166 .

The second forward cleaner 162 receives, from the first forward cleaner 161 , the remainder of the first sedimentation material and the third forward cleaner 163 excluding the tertiary sedimentation material, and mixes with a predetermined foreign material among them. This secondary precipitation is configured, and the remainder except for the secondary precipitation material is formed to be circulated to the first screen unit storage tank 161 .

The third forward cleaner 163 is configured to receive the secondary precipitation material from the second forward cleaner 162 and agitate it, so that a predetermined foreign material among the secondary sedimentation materials is tertiarily precipitated, and the tertiary precipitation material is discarded, The remainder except for the tertiary sedimentation material is formed to be circulated to the first forward cleaner 161 .

The drying unit 200 will be described in detail with reference to FIG. 4 . The drying unit 200 includes a wire 201 and a ceramic blade 202 .

Specifically, the paper is loaded on the wire through the paper forming unit 190, and the paper is transferred from the wire to the dewatering unit 194 (for reference, it is also called 'Felt') and undergoes a dehydration process, and the drying unit 200 (For reference, it is also referred to as 'Y/D'), and it is configured to pick up the dried paper through the ceramic blade 202, and to form a creep. In other words, the raw material is injected from the paper writing forming unit 190 to form paper on the wire, and the paper is transferred to the dewatering unit 194 and dehydrated, and the dehydrated paper passes through the drying unit 200 , and then the ceramic blade (202) means that it is detached.

The paper writing unit 190 sprays the raw material in the eighth processing state onto the surface of the wire 201 , and the drying unit 200 dries the raw material. The ceramic blade 202 may be positioned on one side of the surface of the wire 201 to separate the dried raw material from the wire 201 . The ceramic blade 202 serves to form a paper sheet through a dehydration process such as wire-felt, and the drying unit 200 picks up the paper sheet. At this time, the bevel angle can be adjusted to form the folds of the tissue. In order to increase the moisture absorption rate of the tissue, it is preferable to make the folds of the tissue large. The bevel angle (A) is preferably 7° to 8°. However, it is specified in advance that 4° to 15° is also possible.

The ceramic blade 202 is made of a ceramic material, and is a blade that compensates for the disadvantages of the existing steel blade. In the papermaking process using corrugated cardboard and old paper as raw materials, damage and deformation of the blade easily occur due to foreign substances in the raw material, and the fixed angle may be gradually changed, so the blade should be replaced once every 1 to 3 hours. To compensate for this, a ceramic blade 202 may be applied instead of a steel blade. The ceramic blade 202 is a blade made of a ceramic material, and damage and deformation do not occur easily compared to a steel blade, and the initial fixed angle can be maintained, so that wrinkles in the tissue are constant.

A tissue manufacturing method using a tissue manufacturing system using corrugated cardboard and old paper as raw materials will be described with reference to FIG. 5 .

The method includes (a) steps (S10) to (k) steps (S100).

(a) In step (S10), the dried cardboard and paper are stored at a predetermined ratio, and dissociated with a predetermined dissociation concentration and dissociation time. The dissociation concentration may be between 8% and 10%, and the dissociation time may be between 10 and 15 minutes. The dissociated raw material may be temporarily stored in the pulper unit storage tank 114 before being provided to the step (S20) (b).

(b) In step (S20), the first screen unit 120 having a hole is provided with the raw material in a dissociated state from the pulper unit 110, pressurizes the raw material and filters the raw material with a hole, and a preset included in the raw material By removing foreign substances larger than the size, the raw material is formed in the first processing state. The removed foreign material may be a rigid fiber with poor fiber flexibility, such as wood flour. That is, it means a large foreign material such as undissociated or plastic paper. The raw material in the first processing state may be provided in (c) step (S30).

(c) In step (S30), the first processing unit 130, (b) receiving the raw material in the first processing state from the step (S20), by removing the ink material and the pitch material contained in the raw material, the raw material is formed in the second processing state. The raw material in the second processing state may be provided to (d) step (S40) through the pressure dehydration unit 131 and the kneader unit 132 .

(d) In step (S40), the bleaching tower unit 140 receives the raw material that has undergone step (c) (S30), and performs bleaching of the raw material, thereby forming the raw material in the third treatment state. The raw material in the third processing state may be provided to (e) step (S50) through the plotter unit 141 .

(e) In step S50 , the second screen unit 150 filters the raw material that has passed through the bleaching tower unit 140 , and a slot having a smaller cross-sectional area than the hole provided in the first screen unit 120 . This is provided, and by passing the raw material through the slot, the raw material is formed in the fourth processing state. The raw material in the fourth processing state may be processed by selecting (f) step (S60) or (g) step (S65) in consideration of the characteristics of the raw material.

(f) In step (S60), the forward cleaner unit 160 receives the raw material in the fourth processing state from (e) step (S50) and removes the precipitated foreign material among the foreign substances contained in the raw material, so that the raw material is formed in the 5a processing state. The raw material in the 5a processing state may be provided to (h) step S70 through the second processing unit 166 .

(g) In step (S65), the reverse cleaner unit 165 receives the raw material in the fourth processing state from the step (e) (S50) and removes floating foreign substances among foreign substances contained in the raw material, so that the raw material is formed in the 5b processing state. The raw material in the fifth processing state may be provided to (h) step S70 through the second processing unit 166 . That is, between steps S65 and S70 , the cleaning process is performed by the second processing unit 166 .

(h) In step S70 , the storage unit 170 stores the raw material in the 5a processing state or the 5b processing state that has passed through the forward cleaner 160 and the reverse cleaner 165 . The stored raw material may be provided in (i) step (S80).

(i) In step (S80), the third screen unit 180 receives the raw material in the 5a processing state or the 5b processing state from the storage unit 170, pressurizes the raw material and filters it through the hole, By removing foreign substances having a size larger than a predetermined size contained in the raw material, the raw material is formed in the seventh processing state. The raw material in the seventh processing state may be provided in step (j) (S90).

(j) In step (S90), the paper writing unit 190 receives the raw material in the seventh processing state from (i) step (S80) and sprays the raw material on the surface of the wire 201, so that the The raw material is formed in the eighth treatment state. The raw material in the eighth processing state may be provided in (k) step (S100).

(k) In step (S100), the drying unit 200 receives the raw material in the eighth processing state from (j) step (S90), and includes a step (S100) of drying and separating the raw material. As for the raw material, paper attached to the surface of the drying unit 200 is separated by the ceramic blade 202 .

In the above, the present specification has been described with reference to the embodiments shown in the drawings so that those skilled in the art can easily understand and reproduce the present invention, but these are merely exemplary, and those skilled in the art can make various modifications and equivalent other modifications from the embodiments of the present invention. It will be appreciated that embodiments are possible. Therefore, the protection scope of the present invention should be defined by the claims.

110: pulper unit
111: continuous pulper
112: discontinuous pulper
113: high concentration cleaner
114: pulper unit storage tank
120: first screen unit
130: first processing unit
131: pressure dehydration unit
132: kneader
140: bleaching tower unit
141: plotter unit
150: second screen unit
151: second screen unit storage tank
160: forward cleaner unit
161: first forward cleaner
162: second forward cleaner
163: third forward cleaner
165: reverse cleaner unit
166: second processing unit
170: storage
180: third screen unit
190: paper writing forming part
200: drying unit
201: wire
202: ceramic blade
A: bevel angle

Claims (11)

A tissue manufacturing system comprising corrugated cardboard and old paper as raw materials, comprising:
a pulper unit 110 in which raw materials in a dry state are stored, and the raw materials are dissociated under a preset condition;
As the first screen unit 120 receiving the raw material in a dissociated state from the pulper unit 110, a hole is provided, and by pressing the raw material and filtering the raw material through the hole, foreign substances having a size larger than a predetermined size contained in the raw material are removed. By doing, the first screen unit 120 to form the raw material in a first processing state;
A first processing unit 130 receiving the raw material in the first processing state from the first screen unit 120, by removing the ink material and the pitch material contained in the raw material, the raw material is formed in the second processing state the first processing unit 130;
a bleaching tower unit 140 for bleaching the raw material that has passed through the first processing unit 130, the bleaching tower unit 140 for forming the raw material in a third treatment state;
As a second screen unit 150 for filtering raw materials that have passed through the bleaching tower unit 140 , a slot having a smaller cross-sectional area than a hole provided in the first screen unit 120 is provided, and the slot has the By passing the raw material, the second screen unit 150 to form the raw material in a fourth processing state;
The forward cleaner unit 160 receives the raw material in the fourth processing state from the second screen unit 150 and removes the precipitated foreign substances among the foreign substances contained in the raw material, thereby forming the raw material in the 5a processing state. );
The reverse cleaner unit 165 receives the raw material in the fourth processing state from the second screen unit 150 and removes floating foreign substances among foreign substances contained in the raw material, thereby forming the raw material in the fifth processing state. ); and
and a storage unit 170 in which the raw material in the 5a processing state or 5b processing state that has passed through the forward cleaner 160 and the reverse cleaner 165 is stored,
The second screen unit 150,
At least one of the forward cleaner 160 and the reverse cleaner 165 is formed to supply the raw material in the fourth processing state that has passed through the slot,
tissue making system.
According to claim 1,
As a pressurized dehydration unit 131 provided between the first processing unit 130 and the bleaching tower unit 140 , the raw material in the second processing state is provided from the first processing unit 130 , and the ink is pressurized By removing the material and the pitch material again, the pressurized dehydration unit 131 to form the raw material in the second a processing state; and
As a second processing unit 166 provided on the front end of the storage unit 170, the forward cleaner 160 or the reverse cleaner 165 receives the raw material in the 5a or 5b processing state, and the remaining pitch a second processing unit 166 for forming the raw material into a sixth processing state by removing substances and spots; further comprising,
tissue making system.
3. The method of claim 2,
As the kneader unit 132 receiving the raw material in the 2a processing state from the pressure dehydration unit 131, by dispersing the remaining ink material and the pitch material contained in the raw material in the 2a processing state, the raw material is mixed into the 2b Formed in a processed state, the kneader 132; and
A floater unit 141 provided between the bleaching tower unit 140 and the second screen unit 150 and receiving the raw material in the third processing state from the bleaching tower unit 140, a floater unit 141 for removing the remaining ink material and the pitch material contained in the raw material in the third processing state by using the floating flotation; further comprising,
tissue making system.
3. The method of claim 2,
The second screen unit 150,
It includes a second screen unit storage tank 151 provided on the rear end side,
In the second screen unit storage tank 151, the raw material in the fourth processing state that has passed through the second screen unit 150 is temporarily stored.
tissue making system.
5. The method of claim 4,
The forward cleaner unit 160,
It is sequentially composed of first to third forward cleaners (161, 162, 163),
The first forward cleaner 161,
It is configured such that a predetermined foreign material among the raw materials in the fourth processing state is firstly precipitated, and the remainder is supplied to the second processing unit 166 except for the primary sedimentation material,
The second forward cleaner 162,
The first settling material is provided from the first forward cleaner 161, and a predetermined foreign material from the first settling material is configured to be secondarily precipitated, and the remainder except for the second settling material is the second screen unit storage tank ( 151) is formed to circulate,
The third forward cleaner 163,
The second forward cleaner 162 receives the secondary precipitation material from the second forward cleaner 162, and is configured such that a predetermined foreign material among the secondary sedimentation material is tertiarily precipitated. ) formed to circulate,
tissue making system.
A tissue manufacturing method using the corrugated cardboard and paperboard according to any one of claims 1 to 5, comprising:
(a) the pulper 110, storing the raw material in a dry state, and dissociating the raw material under a preset condition (S10);
(b) the first screen unit 120 provided with the hole receives the raw material in a dissociated state from the pulper unit 110, pressurizes the raw material and filters it through the hole, Forming the raw material in the first processing state by removing the foreign material larger than the size (S20);
(c) the first processing unit 130 receives the raw material in the first processed state from the step (b) (S20) and removes the ink material and the pitch material contained in the raw material, thereby producing the raw material 2 to form a process state (S30);
(d) the bleaching tower unit 140 receives the raw material that has undergone the step (c) (S30), and performs bleaching of the raw material, thereby forming the raw material in a third treatment state (S40) ;
(e) the second screen unit 150 filters the raw material that has passed through the bleaching tower unit 140, and a slot having a smaller cross-sectional area than the hole provided in the first screen unit 120 is provided. , by passing the raw material through the slot, forming the raw material in a fourth processing state (S50);
(f) the forward cleaner unit 160 receives the raw material in the fourth processing state from the step (e) (S50), and removes the precipitated foreign substances among the foreign substances contained in the raw material, thereby removing the raw material 5a forming the process state (S60);
(g) the reverse cleaner unit 165 receives the raw material in the fourth processing state from the step (e) (S50) and removes floating foreign substances among foreign substances contained in the raw material, thereby removing the raw material 5b forming a process state (S65); and
(h) storing, by the storage unit 170, the raw material in the 5a processing state or 5b processing state that has passed through the forward cleaner 160 and the reverse cleaner 165 (S70); doing,
How to make a tissue.
According to claim 1,
A third screen unit 180 that receives the raw material in the 5a treatment state or the 5b treatment state from the storage unit 170, is provided with a hole, and is included in the raw material by pressing the raw material and filtering it through the hole. a third screen unit 180, which forms the raw material in a seventh processing state by removing foreign substances larger than a predetermined size;
A paper writing forming unit 190 that receives the raw material in the seventh treatment state from the third screen unit 180, and by spraying the raw material on the surface of the wire 201, the raw material is formed in the eighth treatment state, Paper writing unit 190; and
It further includes a drying unit 200 that receives the raw material in the eighth processing state from the paper writing forming unit 190, and dries and separates the raw material,
The drying unit 200,
Includes a ceramic blade 202 that can be fixed at a preset bevel angle,
The ceramic blade 202,
separating the raw material from the wire 201,
tissue making system.
8. The method of claim 7,
The ceramic blade 202,
to wrinkle tissue,
By adjusting the bevel angle, the degree of wrinkling of the tissue can be adjusted.
tissue making system.
8. The method of claim 7,
In the paper writing forming part 190,
Spraying the raw material in the seventh treatment state on the surface of the wire 201 and recycling the remaining raw material,
tissue making system.
As a tissue manufacturing method using the corrugated cardboard and paperboard according to any one of claims 7 to 9,
(i) the third screen unit 180 receives the raw material in the 5a-treated state or the 5b-treated state from the storage unit 170, presses the raw material and filters it through the hole, and includes it in the raw material Forming the raw material in a seventh processing state by removing foreign substances having a size greater than or equal to a preset size (S80);
(j) the paper writing unit 190 receives the raw material in the seventh processing state from the step (i) (S80), and sprays the raw material onto the surface of the wire 201, thereby dispensing the raw material into the eighth forming in a processed state (S90);
(k) the drying unit 200 receives the raw material in the eighth processing state from the (j) step (S90), and includes a step (S100) of drying and separating the raw material,
How to make a tissue.
According to claim 1,
The raw material supplied to the tissue manufacturing system is,
60 to 80 parts by weight based on 100 parts by weight of the raw material, corrugated cardboard; and
10 to 20 parts by weight based on 100 parts by weight of the raw material; containing,
tissue making system.

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