KR102466319B1 - Tissue manufacturing system using old corrugated container and used paper and tissue manufacturing method using the same - Google Patents

Abstract

The present invention is a tissue manufacturing system including corrugated cardboard and used paper as raw materials, comprising: a pulper unit 110 for storing dry raw materials and dissociating the raw materials under a predetermined condition; A first screen unit 120 receiving raw material in a dissociated state from the pulper unit 110, having a hole, pressurizing the raw material and filtering the raw material through the hole, thereby removing foreign substances of a predetermined size or more included in the raw material a first screen unit 120 which forms the raw material in a first processing state by doing so; As the first processing unit 130 receiving the raw material in the first processing state from the first screen unit 120, the raw material is formed in the second processing state by removing the ink material and the pitch material included in the raw material. Letting, the first processing unit 130; a bleaching tower unit 140 for bleaching the raw material that has passed through the first processing unit 130, and forming the raw material in a third processing state; As a second screen unit 150 for filtering the raw material that has passed through the bleaching tower unit 140, a slot having a smaller cross-sectional area than the hole provided in the first screen unit 120 is provided, and the slot has the a second screen unit 150 which forms the raw material into a fourth processing state by passing the raw material; The forward cleaner unit 160 receives the raw material in the fourth processing state from the second screen unit 150 and forms the raw material in the fifth a processing state by removing precipitated foreign substances among the foreign substances included in the raw material. ); Reverse cleaner unit 165 receiving the raw material in the fourth processing state from the second screen unit 150 and forming the raw material in the 5b processing state by removing floating foreign substances among foreign substances included in the raw material. ); and a storage unit 170 in which raw materials of the 5a processing state or the 5b processing state that have passed through the forward cleaner unit 160 and the reverse cleaner unit 165 are finally stored, and the second screen unit Reference numeral 150 relates to a tissue manufacturing system configured to supply raw material in the fourth processing state that has passed through the slot to at least one of the forward cleaner part 160 and the reverse cleaner part 165.

Description

Tissue manufacturing system using old corrugated container and used paper and 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 used paper as raw materials.

Recently, the importance of recycling low-grade waste paper is continuously increasing. Currently, various types of notices are generated in Korea, but OCC (Old Corrugated Containers) account for about 65%, making up the majority. In the case of waste corrugated cardboard, most of those generated in Korea are 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 during the recycling collection process. In addition, in the process of producing corrugated cardboard, since foreign substances are mixed to improve the volume during the production of liner paper, the quality of waste corrugated cardboard gradually deteriorates and a large amount of foreign substances are mixed, so the process of removing foreign substances in the old corrugated cardboard is essential.

If various foreign substances such as floating and precipitated foreign substances, ink substances, and pitch substances in raw materials are not removed, many problems occur in the papermaking process of manufacturing tissue. For example, papermaking process equipment may be damaged, which causes problems such as cost increase and productivity decrease.

As the prior art, Korean Patent Registration No. 10-0810713 is disclosed. The prior art relates to a method for manufacturing pulp raw materials recycled from waste paper, including a bleaching process (S1), a foreign matter removal process (S2), a dehydration process (S3), a washing and dehydration process (S4), and a molding process (S5). A method for producing a pulp raw material through the process of is disclosed. However, in the above technology, only the foreign matter removal step (S2) of filtering the foreign matter through the net is disclosed, and thus the foreign matter passing through the net 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 of manufacturing tissue using corrugated paper as a raw material, and discloses various methods of removing foreign substances. However, it has not been disclosed that efficient foreign material removal is performed by selecting a treatment process suitable for the characteristics of the raw material according to the raw material composition ratio. In particular, waste corrugated cardboard contains many foreign substances with a specific gravity of more than 1, but a method for removing foreign substances with a specific gravity of less than 1 in a low-density cleaner 124 is disclosed, and foreign substances in the raw material cannot be effectively removed. This damages 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 requires 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 are problems that adversely affect Y/D damage, dehydration process, and peeling.

(Patent Document 1) Korea Patent Registration 10-0810713

(Patent Document 2) Korea Patent Registration 10-0957650

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

Specifically, when corrugated cardboard and used paper are used as raw materials, it is intended to provide a tissue manufacturing system capable of performing a treatment process suitable for the characteristics of the raw materials according to the composition ratio of the raw materials.

In addition, in the tissue manufacturing system using corrugated cardboard and waste 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 caused by foreign substances during the papermaking process We want to provide a system.

One embodiment of the present invention for solving the above problems is a tissue manufacturing system including corrugated cardboard and used paper as raw materials, wherein raw materials in a dry state are stored, and the pulper unit 110 in which the raw materials are dissociated under predetermined conditions ); A first screen unit 120 receiving raw material in a dissociated state from the pulper unit 110, having a hole, pressurizing the raw material and filtering the raw material through the hole, thereby removing foreign substances of a predetermined size or more included in the raw material a first screen unit 120 which forms the raw material in a first processing state by doing so; As the first processing unit 130 receiving the raw material in the first processing state from the first screen unit 120, the raw material is formed in the second processing state by removing the ink material and the pitch material included in the raw material. Letting, the first processing unit 130; a bleaching tower unit 140 for bleaching the raw material that has passed through the first processing unit 130, and forming the raw material in a third processing state; As a second screen unit 150 for filtering the raw material that has passed through the bleaching tower unit 140, a slot having a smaller cross-sectional area than the hole provided in the first screen unit 120 is provided, and the slot has the a second screen unit 150 which forms the raw material into a fourth processing state by passing the raw material; The forward cleaner unit 160 receives the raw material in the fourth processing state from the second screen unit 150 and forms the raw material in the fifth a processing state by removing precipitated foreign substances among the foreign substances included in the raw material. ); Reverse cleaner unit 165 receiving the raw material in the fourth processing state from the second screen unit 150 and forming the raw material in the 5b processing state by removing floating foreign substances among foreign substances included in the raw material. ); and a storage unit 170 in which raw materials of the 5a processing state or the 5b processing state that have passed through the forward cleaner unit 160 and the reverse cleaner unit 165 are finally stored, and the second screen unit 150 provides a tissue manufacturing system configured to supply raw materials in the fourth processing state that have passed through the slots to at least one of the forward cleaner unit 160 and the reverse cleaner unit 165.

In addition, 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 supplied from the first processing unit 130, and the pressurized a pressurized dewatering unit 131 which removes the ink material and the pitch material again to form the raw material into the second a treatment state; and a second processing unit 166 provided at the front end of the storage unit 170, receiving the raw material in the 5a or 5b processing state from the forward cleaner unit 160 or the reverse cleaner unit 165 and remaining therein. a second processing unit 166 for forming the raw material into a sixth processing state by removing pitch materials 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, the raw material is obtained by dispersing the remaining ink material and pitch material included in the raw material in the 2a processing state. Formed in the 2b processing state, the kneader unit 132; And a plotter 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 remaining ink materials and pitch materials included in the raw material in the third processing state 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. Preferably, 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 removes a predetermined foreign material from raw materials in the fourth processing state. It is configured to be precipitated, and the rest except for the primary precipitate material is formed to be supplied to the second processing unit 166, and the second forward cleaner 162 is configured to precipitate the primary from the first forward cleaner 161 material is provided, and predetermined foreign matter among the primary precipitation material is configured to be secondaryly precipitated, and the rest except for the secondary precipitation 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 to precipitate a predetermined foreign material among the secondary precipitation material, and the rest except for the tertiary precipitation material is the second precipitation material. It is preferable to be formed so as to be circulated to the 2-forward cleaner 162.

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

In addition, as a third screen unit 180 receiving the raw material of the 5a processing state or the 5b processing state from the storage unit 170, a hole is provided, and the raw material is filtered through the hole by pressurizing the raw material a third screen unit 180 for forming the raw material into a seventh processing state by removing foreign substances of a predetermined size or more included in the; As a paper forming unit 190 receiving the raw material in the seventh processing state from the third screen unit 180, forming the raw material in the eighth processing state by spraying the raw material on the surface of the wire 201, a paper pen forming unit 190; and a drying unit 200 that receives the raw material in the eighth processing state from the paper pencil forming unit 190 and dries and separates the raw material, wherein the drying unit 200 has a predetermined bevel angle. and a ceramic blade 202 that can be fixed with, 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 on the tissue and adjusts the degree of wrinkles on the tissue by adjusting the bevel angle.

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

In addition, the present invention is a tissue manufacturing method using corrugated cardboard and used paper according to the above-described tissue manufacturing system, wherein (i) the third screen unit 180 is stored in the storage unit 170 in the 5a processing state or 5b receiving a raw material in a processed state, pressurizing the raw material and filtering the raw material into the hole, thereby removing foreign substances of a predetermined size or larger included in the raw material, thereby forming the raw material into a seventh processed state (S80); (j) The paper pencil forming unit 190 receives the raw material in the seventh processing state from the (i) step (S80) and sprays the raw material on the surface of the wire 201 to transfer the raw material to the eighth processing state. Forming in a processed state (S90); (k) providing the drying unit 200 with the raw material in the eighth processing state from the (j) step (S90), and drying and separating the raw material (S100). do.

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

First, when corrugated cardboard and used paper are used as raw materials, it is possible to provide a tissue manufacturing system capable of a treatment process suitable for the characteristics of the raw materials according to the composition ratio of the raw materials.

Second, in the tissue manufacturing system using corrugated cardboard and waste paper, through a selection process capable of removing various foreign substances accompanying raw materials, problems such as damage to equipment caused by foreign substances during the papermaking process can be minimized.

1 is a conceptual diagram of a tissue manufacturing system according to the present invention.
2 is a flow chart showing the main process flow 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 according to the present invention.
5 is a flow chart showing the main process flow in the tissue manufacturing method according to the present invention.

below. Referring to the drawings, a tissue manufacturing system using corrugated cardboard and used paper as raw materials and a tissue manufacturing method using the same according to the present invention will be described in detail. Among the terms used in this specification, 'system' means an object.

The tissue manufacturing system includes a raw material composition process of preparing a raw material for tissue, and a papermaking process of manufacturing tissue by dehydrating and drying the raw material upon completion of the raw material composition process.

Tissues include rolled tissues, hand towels, multi-purpose towels, and the like.

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

The raw material composition process includes 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, and the reverse A cleaner unit 165 and a storage unit 170 are included.

In the pulper unit 110, raw materials in a dry state are stored, and the raw materials are dissociated under predetermined conditions. As for the raw material, it is preferable to mix corrugated cardboard (60 to 100%) and used paper (0 to 40%). The old paper includes recycled fibers such as sorted office paper (SOP), and old corrugated containers (OCC) may be used for corrugated paper.

The OCC raw material may be used alone, but it is also possible to use it in combination with the old paper. When produced using only old paper as a single raw material, the oil absorption rate was 18.3 seconds, and when a raw material mixed with corrugated cardboard and used paper was produced, the oil absorption rate was 13.2 seconds. % outstanding. Therefore, considering the strength and oil absorption rate of the tissue, it is preferable to blend long fiber (meaning a fiber with a relatively long fiber length compared to OCC raw material) and short fiber corrugated board in the above ratio.

In the pulper unit 110, the mixed raw material of corrugated cardboard and used paper is dissociated. An example of dissociation conditions is as follows. The dissociation concentration is preferably 8% to 10%, and the dissociation time is appropriately 10 to 15 minutes. If dissociation proceeds for less than 10 minutes, dissociation may not occur or fiber aggregation may occur. On the other hand, when the dissociation proceeds for more than 15 minutes, physical properties may deteriorate due to excessive friction between fibers.

The pulper unit 110 is a process for extracting fibers from corrugated cardboard and used paper. The pulper unit 110 may include a continuous pulper 111, a non-continuous pulper 112, a high-concentration cleaner 113, and a pulper unit storage tank 114. A raw material in a dry state is supplied and dissociated in the pulpers 111 and 112 under predetermined conditions. 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 pulper 111, one side continuously inputs the raw material, and the other side supplies the dissociated raw material to the pulper unit storage tank 114 at the same time. The non-continuous pulper 112 inputs the raw material to be dissociated, and when the dissociation is completed, the raw material may be supplied to the pulper unit storage tank 114 through the high-concentration cleaner 113 . Raw materials dissociated through the continuous pulper 111 or the non-continuous pulper 112 may be stored in the pulper unit storage tank 114 . Before providing to the pulper portion reservoir 114, a reservoir (not shown) for temporary storage may be added. The pulper unit storage tank 114 can stably supply the dissociated raw material to the next process, the first screen unit 120 . As described above, the first screen unit 120 may include a hole screen process and a slot screen process. A reservoir serving the same role as the pulper unit reservoir 114 may be added, and the location of the reservoir in the process is not limited.

In the pulper unit 110, the raw material in a state in which the fiber materials contained in the raw material are sufficiently dissociated is provided to the first screen unit 120. The first screen unit 120 is a process for removing foreign substances having a predetermined size or more, and is provided with a hole, and pressurizes the raw material provided from the pulper unit 110 to filter the hole. A foreign substance larger than the size of the hole can be removed because it cannot pass through the hole. Foreign substances to be removed are stiff fibers with poor fiber flexibility, such as wood flour. That is, it means a large foreign matter 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). The first screen unit 120 may be a universally used hole screen or slot screen. 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 pitch material included in the raw material, and removes the ink material and the pitch material in the process of generating the first dehydration by the first centrifugal force by applying a rotational force of 720 RPM or more from the roller. 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 materials are also removed together in this process.

Ink material and pitch material are removed from the raw material in the first processing state received from 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 pressurized dewatering unit 131 through a mixing storage tank (not shown) in the second treatment state. Here, in the first screen unit 120, it is preferable to additionally remove high-density foreign matter in addition to the ink material and the pitch material.

The pressure dewatering unit 131 is a process of removing ink materials and pitch materials through a pressurization process for raw materials introduced based on a pair of rollers. The pressure dewatering unit 131 pressurizes the raw material in the second processed state provided by the first processing unit 130 to remove the ink material and the pitch material again, thereby forming the raw material in the second processed 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 ink material and pitch material embedded in fibers by causing friction between fibers. In other words, it is a process of pulverization through heat and pressure. By dispersing the remaining ink material and pitch material included in the raw material in the 2a treated state supplied by the pressurized dehydration unit 131, the raw material is formed in the 2b treated 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 a 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 injected into the bleaching tower unit 140, and in this case, the raw material may simply pass through the bleaching tower unit 140. In the above-described kneader unit 132, the raw material undergoes a high-temperature and high-pressure process, while staying for a predetermined time in the bleaching tower unit 140, the fiber swells and the hydrophobic substances attached to the fiber are easily separated. A pretreatment process is performed It can be. That is, in the bleaching tower unit 140, a bleaching process may be performed depending on whether a bleaching material is added or not, or it may be configured to simply perform only a swelling role.

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

The second screen unit 150 is a process of removing foreign substances by passing raw materials through the slots. The slot has a smaller cross-sectional area than the hole provided in the first screen unit 120 . By filtering the raw material passing through the floatator unit 141 through the slot, the raw material is formed in a 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 unit 160 or the reverse cleaner unit 165. ) can be provided. At this time, as shown in FIG. 1, the second screen unit 150 may proceed as a tertiary process, but the order may be appropriately adjusted according to the designer's choice.

Depending on the ratio of corrugated cardboard and used paper, consider the characteristics of raw materials to select and proceed with a suitable process. 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 unit 160 is a process of removing precipitated foreign substances among foreign substances included in the raw material. Precipitated foreign substances included in the raw material of the fourth processed state provided by the second screen unit 150 are removed to form the raw material of the fifth a processed state. The raw material in the 5a processing state may be provided to the second processing unit 166 .

The reverse cleaner unit 165 is a process of removing floating foreign substances among foreign substances included in the raw material. It is an appropriate process to remove adhesive foreign substances (e.g., sticky) and micro-vinyl when handling raw materials (milk cartons, paper cups, etc.) laminated with composite vinyl. Among the foreign substances included in the raw material in the fourth processed state provided by the second screen unit 150, floating foreign substances are removed to form the raw material in the 5b processed state. The raw material in the 5b processing state may be provided to the second processing unit 166 .

The second processing unit 166, as a cleaning process, is a process of removing high specific gravity foreign substances and removing residual pitch materials and spots included in the raw material. The raw material in the 5a or 5b processing state is received from the forward cleaner unit 160 or the reverse cleaner unit 165, and the residual pitch material and spots are removed with water using the force of the drop, thereby bringing the raw material to the sixth processing state. can form. Raw materials in the sixth processing state may be provided to the storage unit 170 . For reference, washing facilities including DNT, a fall washer, and a Two Drum Thickener may be used as the facilities of the second processing unit 166 .

The storage unit 170 may store a raw material in a 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 composition of which has been completed, can be put on standby until the papermaking process starts, or the raw material flowing to the rear end of the storage unit 170, that is, the papermaking process can be stably supplied. can In addition, even if an abnormality occurs in the flow at the front end of the storage unit 170, it can play a role of alleviating the impact caused by the abnormality.

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

Regarding the water treatment method of the papermaking process, the manufacturing method of tissue fabric composed of raw material and papermaking mainly consists of removing foreign substances through dehydration and dilution. Accordingly, the quality of water managed in the raw material and the water quality on the grassland side is also a very important process management factor.

In more detail, the concentration of the paper-based paper-based writing unit 190 is less than about 0.2%, and since the amount of water used is large, foreign substances in the water, ink that is not selected in the paper, and pitch materials are floated in a flotation method, coagulant and coagulant. It is configured to purify water using

In order to minimize user discomfort such as tissue tearing during the process of wiping moisture and foreign substances, in order to increase the strength of the tissue, a material-specific wet strength enhancer may be added to the raw material in the papermaking process.

The third screen unit 180 is a process of removing foreign substances of a predetermined size or more included in the raw material. The raw materials 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 through other paths. Therefore, the process of the third screen unit 180 is performed to redefine the foreign matter. Prior to the third screen unit 180, a storage tank (not shown) may be added. The raw material in the sixth processing state is received from the storage unit 170 of the raw material composition process, and the raw material is pressurized and filtered through the hole to form the raw material in the seventh processing state. The raw material in the seventh processing state is provided to the paper pencil forming unit 190 .

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

Meanwhile, since the wire 201 has a mesh shape, holes through which moisture can escape are formed, and short fibers in the raw material together with moisture can pass through the wire 201 . In the process of spraying the wire 201 from the paper pencil forming unit 190, short fibers may be included in the material that is not carried on the wire 201 and falls off. Therefore, in order to recycle the discarded short fibers and use them as raw materials, the floating flotation is separately treated to remove precipitated foreign substances, and the fibers can be recycled as polymers of the coagulant and coagulant. Yield can be increased by treating such a process. That is, it is possible to filter white water through flotation without recycling fibers. For reference, the coagulant and the coagulant serve to coagulate and remove hydrophobic materials such as ink.

The drying unit 200 is a process 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 felt, and separating the dried raw material (paper and pencil) in the drying unit 200. The raw material in the eighth processed state formed from the paper pencil forming 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 . Due to the forward cleaner unit 160, corrugated cardboard as a raw material contains a large number of foreign substances such as a silicon component having a specific gravity exceeding 1. In order to remove foreign substances using the characteristics of precipitation, the following process is performed.

First, the second screen unit 150, which is the previous stage of the forward cleaner unit 160, includes a second screen unit storage tank 151 provided at the rear side, and the second screen unit storage tank 151 includes the second screen unit storage tank 151. Raw materials in the fourth processing state that have passed through the unit 150 may be stored.

The second screen portion 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 can 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 can play a role of mitigating the impact caused 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, while stirring the raw material in the fourth processing state, predetermined foreign substances among the raw materials It may be configured to be precipitated for the first time. Except for the primary precipitation material, the rest is formed to be supplied to the second processing unit 166.

The second forward cleaner 162 receives the first precipitate from the first forward cleaner 161 and the remainder except for the tertiary precipitate from the third forward cleaner 163 and mixes them with predetermined foreign substances. It is configured to be secondary precipitated, and the rest except for the secondary precipitated material is formed to be circulated to the first screen unit storage tank 161.

The third forward cleaner 163 is configured to thirdly precipitate predetermined foreign substances among the secondary precipitated substances while receiving and stirring the secondary precipitate substances from the second forward cleaner 162, discarding the tertiary precipitate substances, Except for the tertiary precipitate, the rest is formed to circulate through the first forward cleaner 161.

Referring to FIG. 4 , the drying unit 200 will be described in detail. 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 moved from the wire to the dewatering unit 194 (for reference, it is also called 'Felt') to undergo a dehydration process, and the drying unit 200 (For reference, it is also called 'Y/D') is configured to pick up only the paper pencil and dry it through the ceramic blade 202 and form a crepe. In other words, the raw material is injected from the paper pencil forming unit 190 to form paper on the wire, and the paper is transferred to the dewatering unit 194 to be dehydrated, and the dehydrated paper passes through the drying unit 200 and then (202) means to be taken off.

The paper forming unit 190 sprays the raw material in the eighth processing state on the surface of the wire 201, and the drying unit 200 dries the raw material. The ceramic blade 202 is located on one side of the surface of the wire 201, and the dried raw material can be separated from the wire 201. Paper is formed through a dehydration process such as wire-felt, and the role of the drying unit 200 to pick up the paper is the ceramic blade 202. At this time, the bevel angle may be adjusted to form wrinkles on the tissue, but it is preferable to form wrinkles on the tissue to increase the water absorption rate of the tissue. 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 used paper as raw materials, the blades are easily damaged and deformed by foreign substances in the raw materials, and the fixed angle can gradually change, so the blades must 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 is not easily damaged and deformed compared to a steel blade, and can maintain the initially fixed angle, so that wrinkles in the tissue are constant.

Referring to FIG. 5 , a tissue manufacturing method using a tissue manufacturing system using corrugated cardboard and used paper as raw materials will be described.

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

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

(b) In step (S20), the first screen unit 120 provided with holes receives the raw material in a dissociated state from the pulper unit 110, pressurizes the raw material and filters the raw material through the holes to obtain a predetermined value included in the raw material. By removing foreign matter of a size or larger, the raw material is formed in the first treated state. The type of foreign matter removed may be a rigid fiber having poor fiber flexibility, such as wood flour. That is, it means a large foreign matter such as undissociated or plastic paper. The raw material in the first processing state may be provided in step (c) (S30).

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

In step (d) (S40), the bleaching tower unit 140 receives the raw material passed through step (c) (S30) and bleaches the raw material, thereby forming the raw material in a third processing state. The raw material in the third processing state may be provided to step (e) (S50) via the floatator 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 a fourth processing state. The raw material in the fourth processing state may proceed by selecting step (f) (S60) or step (g) (S65) in consideration of characteristics of the raw material.

(f) In step (S60), the forward cleaner unit 160 receives the raw material in the fourth processing state from step (e) (S50), and removes foreign substances included in the raw material to be precipitated, thereby removing the raw material. is formed in the 5a processing state. The raw material in the 5a processing state may be provided to step (h) (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 step (e) (S50) and removes floating foreign substances among the foreign substances included in the raw material, thereby removing the raw material. is formed in the 5b processing state. The raw material in the 5b processing state may be provided to step (h) (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 materials in the 5a processing state or the 5b processing state that have passed through the forward cleaner unit 160 and the reverse cleaner unit 165. The stored raw material may be provided to step (i) (S80).

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

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

In step (k) (S100), the drying unit 200 receives the raw material in the eighth processing state from step (j) (S90), and includes drying and separating the raw material (S100). The paper and pencil attached to the surface of the drying unit 200 are separated from the raw material 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 this is only exemplary, and those skilled in the art can make various modifications and equivalents from the embodiments of the present invention. It will be appreciated that embodiments are possible. Therefore, the scope of protection of the present invention should be defined by the claims.

110: pulper unit
111: continuous pulper
112: non-continuous pulper
113: high concentration cleaner
114: pulper unit reservoir
120: first screen unit
130: first processing unit
131: pressurized dehydration unit
132: Kneader part
140: bleaching tower part
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: 3rd forward cleaner
165: reverse cleaner part
166: second processing unit
170: storage unit
180: third screen unit
190: paper forming unit
200: drying unit
201: wire
202: ceramic blade
A: bevel angle

Claims (11)

A tissue manufacturing system comprising corrugated cardboard and used paper as raw materials,
A pulper unit 110 that stores raw materials in a dry state and dissociates the raw materials under predetermined conditions;
A first screen unit 120 receiving raw material in a dissociated state from the pulper unit 110, having a hole, pressurizing the raw material and filtering the raw material through the hole, thereby removing foreign substances of a predetermined size or more included in the raw material a first screen unit 120 which forms the raw material in a first processing state by doing so;
As the first processing unit 130 receiving the raw material in the first processing state from the first screen unit 120, the raw material is formed in the second processing state by removing the ink material and the pitch material included in the raw material. Letting, the first processing unit 130;
a bleaching tower unit 140 for bleaching the raw material that has passed through the first processing unit 130, and forming the raw material in a third processing state;
As a second screen unit 150 for filtering the raw material that has passed through the bleaching tower unit 140, a slot having a smaller cross-sectional area than the hole provided in the first screen unit 120 is provided, and the slot has the a second screen unit 150 which forms the raw material into a fourth processing state by passing the raw material;
The forward cleaner unit 160 receives the raw material in the fourth processing state from the second screen unit 150 and forms the raw material in the fifth a processing state by removing precipitated foreign substances among the foreign substances included in the raw material. );
Reverse cleaner unit 165 receiving the raw material in the fourth processing state from the second screen unit 150 and forming the raw material in the 5b processing state by removing floating foreign substances among foreign substances included in the raw material. ); and
A storage unit 170 for storing raw materials of the 5a processing state or the 5b processing state that have passed through the forward cleaner unit 160 and the reverse cleaner unit 165,
The second screen unit 150,
At least one of the forward cleaner part 160 and the reverse cleaner part 165 is formed to supply the raw material of the fourth processing state that has passed through the slot,
tissue making system.
According to claim 1,
A pressure dewatering unit 131 provided between the first processing unit 130 and the bleaching tower unit 140, receiving the raw material in the second processing state from the first processing unit 130, pressurizing the ink a pressurized dehydration unit 131 for forming the raw material into the second a treatment state by removing the material and the pitch material again; and
As the second processing unit 166 provided at the front end of the storage unit 170, the raw material in the 5a or 5b processing state is supplied from the forward cleaner unit 160 or the reverse cleaner unit 165, and the remaining pitch a second processing unit 166 for forming the raw material into a sixth processing state by removing materials and spots; Including more,
tissue making system.
According to claim 2,
As a kneader unit 132 receiving the raw material in the 2a processing state from the pressurized dehydration unit 131, by dispersing the remaining ink material and pitch material included in the raw material in the 2a processing state, the raw material in the 2b processing state Formed in a processed state, kneader unit 132; and
A plotter 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 residual ink material and pitch material included in the raw material in the third processing state again through the floating float by using; Including more,
tissue making system.
According to claim 2,
The second screen unit 150,
It includes a second screen unit storage tank 151 provided at the rear end,
The second screen unit storage tank 151 temporarily stores raw materials in the fourth processing state that have passed through the second screen unit 150.
tissue making system.
According to claim 4,
The forward cleaner unit 160,
It is sequentially composed of first to third forward cleaners 161, 162, and 163,
The first forward cleaner 161,
Among the raw materials in the fourth processing state, a predetermined foreign material is configured to be precipitated first, and the remainder except for the first precipitated material is supplied to the second processing unit 166,
The second forward cleaner 162,
The first precipitate is provided from the first forward cleaner 161, and a predetermined foreign substance among the first precipitate is configured to be secondarily precipitated, and the rest except for the secondary precipitate is the second screen unit storage tank ( 151) is formed to circulate,
The third forward cleaner 163,
The second forward cleaner 162 receives the second precipitate material, and a predetermined foreign material among the second precipitate material is thirdly precipitated. ), which is formed to circulate
tissue making system.
A tissue manufacturing method using the corrugated cardboard and used paper according to any one of claims 1 to 5,
(a) the pulper unit 110 stores raw materials in a dry state and dissociates the raw materials under predetermined conditions (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 the raw material through the hole, Forming the raw material into a first processing state by removing foreign substances larger than the size (S20);
(c) The first processing unit 130 receives the raw material in the first processed state from step (b) (S20) and removes the ink material and the pitch material included in the raw material to process the raw material. Step 2 to form a processing state (S30);
(d) the bleaching tower unit 140 receives the raw material passed through step (c) (S30) and bleaches the raw material, thereby forming the raw material into a third processing state (S40) ;
(e) The second screen unit 150 filters the raw material that has passed through the bleaching tower unit 140 and is provided with a slot having a smaller cross-sectional area than the hole provided in the first screen unit 120, , forming the raw material into a fourth processing state by passing the raw material through the slot (S50);
(f) The forward cleaner unit 160 receives the raw material in the fourth processing state from the (e) step (S50) and removes the foreign substances contained in the raw material to be precipitated, thereby removing the raw material. Forming in a 5a processing state (S60);
(g) The reverse cleaner unit 165 removes the raw material by receiving the raw material in the fourth processing state from the (e) step (S50) and removing floating foreign substances among the foreign substances included in the raw material. Forming in a 5b processed state (S65); and
(h) storing, in the storage unit 170, the raw material of the 5a processing state or the 5b processing state that has passed through the forward cleaner unit 160 and the reverse cleaner unit 165 (S70). doing,
How to make a tissue.
According to claim 1,
As a 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 through the hole by pressurizing the raw material to be included in the raw material. a third screen unit 180 for forming the raw material into a seventh processing state by removing foreign substances having a predetermined size or more;
As a paper forming unit 190 receiving the raw material in the seventh processing state from the third screen unit 180, forming the raw material in the eighth processing state by spraying the raw material on the surface of the wire 201, a paper pen forming unit 190; and
Further comprising a drying unit 200 for receiving the raw material in the eighth processing state from the paper pencil forming unit 190 and drying and separating the raw material,
The drying unit 200,
It 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.
According to claim 7,
The ceramic blade 202,
form wrinkles in tissue,
By adjusting the bevel angle, the degree of wrinkles of the tissue is adjusted,
tissue making system.
According to claim 7,
In the paper writing unit 190,
Spraying the raw material in the seventh processing state on the surface of the wire 201 and recycling the remaining raw material,
tissue making system.
A tissue manufacturing method using the corrugated cardboard and used paper according to any one of claims 7 to 9,
(i) 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 the raw material into the hole, so that the raw material is included in the raw material. Forming the raw material into a seventh processing state by removing foreign substances having a predetermined size or more (S80);
(j) The paper pencil forming unit 190 receives the raw material in the seventh processing state from the (i) step (S80) and sprays the raw material on the surface of the wire 201 to transfer the raw material to the eighth processing state. Forming in a processed state (S90);
(k) the drying unit 200 receives the raw material in the eighth processing state from the step (j) (S90), and dries and separates the raw material (S100).
How to make a tissue.
According to claim 1,
The raw material supplied to the tissue manufacturing system,
60 to 80 parts by weight based on 100 parts by weight of raw materials, corrugated cardboard; and
Koji, which is 10 to 20 parts by weight based on 100 parts by weight of the raw material; including,
tissue making system.

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