WO2015121903A1 - シート製造装置、原料解繊装置 - Google Patents

シート製造装置、原料解繊装置 Download PDF

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Publication number
WO2015121903A1
WO2015121903A1 PCT/JP2014/004952 JP2014004952W WO2015121903A1 WO 2015121903 A1 WO2015121903 A1 WO 2015121903A1 JP 2014004952 W JP2014004952 W JP 2014004952W WO 2015121903 A1 WO2015121903 A1 WO 2015121903A1
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WO
WIPO (PCT)
Prior art keywords
unit
defibrating
amount
crushing
defibrated
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2014/004952
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
嘉明 村山
阿部　信正
利昭 山上
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seiko Epson Corp
Original Assignee
Seiko Epson Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Seiko Epson Corp filed Critical Seiko Epson Corp
Priority to CN201480075492.9A priority Critical patent/CN105980619B/zh
Priority to EP14882339.6A priority patent/EP3106557B1/en
Priority to EP21198452.1A priority patent/EP3964619A1/en
Priority to US15/103,520 priority patent/US10563351B2/en
Priority to EP21211148.8A priority patent/EP3998380B1/en
Publication of WO2015121903A1 publication Critical patent/WO2015121903A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/06—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by dry methods
    • D21B1/08—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by dry methods the raw material being waste paper; the raw material being rags
    • D21B1/10—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by dry methods the raw material being waste paper; the raw material being rags by cutting actions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/04—Manufacture of substantially flat articles, e.g. boards, from particles or fibres from fibres
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/06—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by dry methods
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/64—Paper recycling

Definitions

  • the present invention relates to a sheet manufacturing apparatus and a raw material defibrating apparatus.
  • a dry defibrating unit that pulverizes and defibrates the used waste paper with a crusher, a first conveying unit that conveys the defibrated material that has been defibrated by the dry defibrating unit, and a first conveying unit.
  • the paper is formed with a classification unit that performs deinking by classifying the defibrated material with an air current, a second conveying unit that conveys the defibrated material that has been deinked by the classifying unit, and a defibrated material conveyed by the second conveying unit.
  • the present invention has been made to solve at least a part of the problems described above, and can be realized as the following forms or application examples.
  • a sheet manufacturing apparatus includes a crushing unit that crushes at least a fiber-containing raw material in air to make a fine piece, and a defibration that defibrates at least the fine piece in the air. And a forming unit that forms a sheet using the defibrated material defibrated in the defibrating unit, wherein the defibrating unit is defibrated per unit time.
  • the amount of defibration treatment which is an amount, is greater than or equal to the amount of pulverization treatment that is the amount that is crushed per unit time in the crushing unit.
  • the defibration amount is greater than or equal to the crushing amount, so that the stagnation of the fine pieces at the defibrating portion is suppressed and the defibration failure can be prevented.
  • the defibrated material is sorted into a passing material that passes through a plurality of openings and a non-passing residue, and the defibrated material is separated from the defibrated material.
  • a first conveyance path that conveys to the section, and the defibration treatment amount is larger than the sum of the passage amount passing through the first conveyance path per unit time and the crushing treatment amount. Or it is the same.
  • the sheet manufacturing apparatus includes a cutting unit that cuts the sheet, and a second conveyance path that conveys the end material generated when the sheet is cut by the cutting unit,
  • the fibrillation amount is greater than or equal to the sum of the passage amount passing through the second conveyance path per unit time and the coarsely pulverized amount.
  • the defibrating part has a higher processing capacity, so that the raw material does not stay.
  • a raw material defibrating apparatus includes a crushing unit that crushes at least a fiber-containing raw material into air pieces, and defibrates the fine pieces in air.
  • a defibration processing amount processed per unit time in the defibrating unit is larger than a crushing processing amount processed per unit time in the crushing unit Or it is the same.
  • the defibration amount is larger or the same as the crushed amount, the defibrating part and the stay of the fine pieces are suppressed in the conveyance path between the crushed part and the defibrated part, Defibration defects can be prevented.
  • the sheet manufacturing apparatus is based on a technique for forming a raw material (defibrated material) Pu such as a pure pulp sheet or used paper into a new sheet Pr, for example.
  • the sheet manufacturing apparatus includes a crushing unit that crushes at least a fiber-containing raw material in the air into fine pieces, a defibrating unit that defibrates the fine pieces in air, and a defibrated by the defibrating unit.
  • a sheet manufacturing apparatus including a forming unit that forms a sheet using a fine material, and the amount of defibration processed per unit time in the defibrating unit is about unit time in the crushing unit. It is characterized by being larger or the same as the amount of coarse crushing processed. This will be specifically described below.
  • FIG. 1 is a schematic diagram showing a configuration of a sheet manufacturing apparatus according to the present embodiment.
  • the sheet manufacturing apparatus 1 of the present embodiment includes a supply unit 10, a crushing unit 20, a defibrating unit 30, a classification unit 40, a sorting unit 50, and an additive charging unit 60.
  • the control part 2 which controls these members is provided.
  • the supply unit 10 supplies used paper Pu to the crushing unit 20.
  • the supply unit 10 includes, for example, a tray 11 that accumulates and stores a plurality of used paper Pu, and an automatic feeding mechanism 12 that can continuously input the used paper Pu in the tray 11 to the crushing unit 20.
  • the used paper Pu supplied to the sheet manufacturing apparatus 1 is, for example, A4 size paper that is currently mainstream in offices.
  • the crushing unit 20 cuts the supplied used paper Pu into small centimeter square pieces.
  • the crushing unit 20 includes a crushing blade 21 and constitutes an apparatus in which the cutting width of a normal shredder blade is widened. Thereby, the supplied used paper Pu can be easily cut into strips. Then, the divided pieces are supplied to the defibrating unit 30 via the pipe 201.
  • the diameter of the pipe 201 provided between the crushing unit 20 and the defibrating unit 30 is constant (uniform). In other words, there is no staying portion or the like for retaining the finely crushed pieces by the crushing unit 20 between the crushing unit 20 and the defibrating unit 30. Thereby, since the diameter of the piping 201 can be made constant, cost is low and space saving can be achieved.
  • the defibrating unit 30 includes a rotating rotor (not shown), and performs defibrating to unravel the fibers by colliding the crushed paper supplied from the crushing unit 20 with the rotor.
  • the defibrating unit 30 of the present embodiment performs defibrating in a dry manner in the air.
  • the printed ink, toner, and the material applied to the paper such as the anti-bleeding material become fibers of several tens of ⁇ m or less (hereinafter referred to as “ink particles”). And separate. Therefore, the defibrated material coming out of the defibrating unit 30 becomes fibers and ink particles obtained by defibrating the paper pieces.
  • the airflow is generated by the rotation of the rotor, and the fibers defibrated via the pipe 202 are carried by the airflow to the classifying unit 40 in the air.
  • the defibrating unit 30 has a mechanism in which an air flow is generated by the rotation of the rotor blade, and the fiber defibrated via the pipe 202 is carried to the classifying unit 40 along the air flow.
  • the dry type defibrating part 30 which is not equipped with a wind generation mechanism, what is necessary is just to provide separately the airflow generator which generates an airflow from the crushing part 20 toward the defibrating part 30.
  • the classifying unit 40 classifies the introduced material by airflow.
  • the defibrated material as the introduced material is classified into ink particles and fibers.
  • the classification unit 40 can classify the conveyed fibers into ink particles and deinked fibers (deinked defibrated material), for example, by applying a cyclone.
  • airflow classifiers may be used instead of the cyclone.
  • an airflow classifier other than the cyclone for example, an elbow jet or an eddy classifier is used.
  • the airflow classifier generates a swirling airflow, which is separated and classified by the difference in centrifugal force received depending on the size and density of the defibrated material, and the classification point can be adjusted by adjusting the speed and centrifugal force of the airflow. .
  • the ink particles are divided into relatively small and low density ink particles and fibers larger than the ink particles and high density. Removing ink particles from fibers is called deinking.
  • the classifying unit 40 of the present embodiment is a tangential input type cyclone, an introduction port 40 a introduced from the defibrating unit 30, a cylinder part 41 with the introduction port 40 a in the tangential direction, and a cone continuing to the lower part of the cylinder part 41. It is comprised from the part 42, the lower outlet 40b provided in the lower part of the cone part 42, and the upper exhaust port 40c for fine powder discharge
  • the airflow on which the defibrated material introduced from the inlet 40a of the classifying unit 40 is changed into a circumferential motion at the cylindrical part 41 and the conical part 42, and is subjected to centrifugal force and classified.
  • the fibers larger than the ink particles and having a higher density move to the lower outlet 40b, and the relatively small and lower density ink particles are led to the upper exhaust port 40c together with air as fine powder, and deinking proceeds.
  • the short fiber mixture containing a large amount of ink particles is discharged from the upper exhaust port 40 c of the classification unit 40.
  • the short fiber mixture containing a large amount of discharged ink particles is collected in the receiving unit 80 via the pipe 206 connected to the upper exhaust port 40 c of the classifying unit 40.
  • a classified product containing fibers classified through the pipe 203 from the lower outlet 40b of the classifying unit 40 is conveyed toward the sorting unit 50 in the air. From the classification unit 40 to the sorting unit 50, it may be transported by an air current when it is classified, or may be transported from the classification unit 40 located above to the sorting unit 50 located below by gravity. Note that a suction part or the like for efficiently sucking the short fiber mixture from the upper exhaust port 40c may be disposed in the upper exhaust port 40c, the pipe 206, or the like of the classification unit 40.
  • the sorting unit 50 sorts the classified product including the fibers classified by the classifying unit 40 through a plurality of openings of the drum unit 51. More specifically, the classified product including the fibers classified by the classifying unit 40 is sorted into a passing material that passes through the opening and a residue that does not pass through the opening.
  • the passing material is mainly fibers of a size that passes through the opening.
  • the residue is an undefibrated piece that has not been fibrillated, a fiber mass in which the fibers are intertwined, or a length of fiber that cannot pass through the opening.
  • the sorting unit 50 according to the present embodiment includes a mechanism for dispersing the classified material in the air by rotational movement.
  • the passing material that has passed through the opening by sorting by the sorting unit 50 is received by the hopper unit 56 and then conveyed to the molding unit 70 via the pipe 204.
  • the residue that has not passed through the opening due to the sorting by the sorting unit 50 is returned again to the defibrating unit 30 as a material to be defibrated via the pipe 205 serving as the first transport path.
  • the residue cannot pass through the opening, and is defibrated by the defibrating unit 30 so that it can pass through the opening. Thereby, the residue is reused (reused) without being discarded.
  • the passing material that has passed through the opening by sorting by the sorting unit 50 is conveyed in the air to the molding unit 70 via the pipe 204.
  • the sorting unit 50 to the molding unit 70 it may be conveyed by a blower (not shown) that generates an air flow, or may be conveyed from the upper sorting unit 50 to the lower molding unit 70 by gravity.
  • an additive feeding unit 60 for adding an additive such as a resin (for example, a fusion resin or a thermosetting resin) to the passing material to be conveyed. Is provided.
  • a flame retardant for example, a whiteness improver, a sheet strength enhancer, a sizing agent, and the like can be added as the additive.
  • These additives are stored in the additive storage unit 61 and are charged from the charging port 62 by a charging mechanism (not shown).
  • the forming unit 70 forms a web by depositing a material including a passing material including fibers and resin introduced from the pipe 204.
  • the forming unit 70 has a mechanism for uniformly dispersing the fibers in the air and a mechanism for depositing the dispersed fibers on the mesh belt 73.
  • a forming drum 71 into which the fibers and the resin are charged is disposed in the molding unit 70.
  • the resin (additive) can be uniformly mixed in the passing material (fiber) by rotating the forming drum 71.
  • the forming drum 71 is provided with a screen having a plurality of small holes. Then, the forming drum 71 is rotationally driven to uniformly mix the resin (additive) in the passing material (fiber) and to uniformly disperse the fiber and the fiber-resin mixture that have passed through the small holes in the air. Can do.
  • an endless mesh belt 73 in which a mesh stretched by a stretch roller 72 is formed is disposed below the forming drum 71.
  • the mesh belt 73 is moved in one direction by rotating at least one of the stretching rollers 72.
  • a suction device 75 as a suction unit that generates an airflow directed vertically downward is provided below the forming drum 71 via a mesh belt 73.
  • the suction device 75 can suck the fibers dispersed in the air onto the mesh belt 73.
  • the fiber or the like that has passed through the small hole screen of the forming drum 71 is deposited on the mesh belt 73 by the suction force by the suction device 75.
  • the mesh belt 73 by moving the mesh belt 73 in one direction, it is possible to form a web W that includes fibers and resin and is deposited in a long shape.
  • the mesh belt 73 may be made of metal, resin, or non-woven fabric, and may be anything as long as fibers can be deposited and an air stream can pass therethrough.
  • the suction device 75 can be configured by forming a sealed box with a window of a desired size opened under the mesh belt 73, and sucking air from other than the window to make the inside of the box have a negative pressure from the outside air.
  • the web W concerning this embodiment means the structure form of the object containing a fiber and resin. Accordingly, the web W is shown even when the form or the like is changed when the web W is heated, pressurized, cut or transported.
  • the web W formed on the mesh belt 73 is transported by the transport unit 100.
  • the transport unit 100 according to the present embodiment is a part that transports the web W from when the mesh belt 73 is finally put into the stacker 160 as a sheet Pr (web W). Therefore, in addition to the mesh belt 73, various rollers described later function as a part of the transport unit 100.
  • As the transport unit there may be at least one of a transport belt, a transport roller, and the like. Specifically, first, the web W formed on the mesh belt 73 which is a part of the transport unit 100 is transported according to the transport direction (arrow in the figure) by the rotational movement of the mesh belt 73.
  • a pressure unit is arranged on the downstream side of the forming unit 70 in the web W conveyance direction.
  • the pressurization part of this embodiment is the pressurization part 140 which has the roller 141 which pressurizes the web W.
  • the web W By passing the web W between the mesh belt 73 and the roller 141, the web W can be pressurized. Thereby, the strength of the web W can be improved.
  • the cutting unit front roller 120 is disposed on the downstream side of the pressing unit 140 in the conveyance direction of the web W.
  • the front cutting unit roller 120 includes a pair of rollers 121.
  • One of the pair of rollers 121 is a drive control roller, and the other is a driven roller.
  • a one-way clutch is used for the drive transmission unit that rotates the roller 120 in front of the cutting unit.
  • the one-way clutch has a clutch mechanism that transmits rotational force only in one direction, and is configured to idle in the opposite direction.
  • a front cutting unit 110 that cuts the web W in a direction intersecting the transport direction of the web W to be transported is disposed downstream of the front roller 120 in the transport direction of the web W.
  • the front cutting unit 110 includes a cutter, and cuts the continuous web W into sheets (sheets) according to a cutting position set to a predetermined length.
  • a rotary cutter can be applied to the front cutting unit 110. Accordingly, the web W can be cut while being conveyed. Accordingly, since the conveyance of the web W is not stopped at the time of cutting, the manufacturing efficiency can be improved.
  • the front cutting part 110 may apply various cutters in addition to the rotary cutter.
  • a cutting unit rear roller 125 is disposed downstream of the front cutting unit 110 in the conveyance direction of the web W.
  • the cutting portion rear roller 125 is composed of a pair of rollers 126.
  • One of the pair of rollers 126 is a drive control roller, and the other is a driven roller.
  • the web W can be tensioned by the speed difference between the front roller 120 and the rear roller 125. Then, the web W is cut by driving the front cutting unit 110 in a state where tension is applied to the web W.
  • a pair of heating and pressing rollers 151 constituting a heating and pressing unit 150 serving as a heating unit are disposed downstream of the cutting unit rear roller 125 in the conveyance direction of the web W.
  • the heating and pressing unit 150 binds (fixes) the fibers contained in the web W through a resin.
  • a heating member such as a heater is provided at the center of the rotating shaft of the heating and pressing roller 151, and the web W being conveyed is heated by passing the web W between the pair of heating and pressing rollers 151. Can be pressurized.
  • the web W is heated and pressed by the pair of heating and pressing rollers 151, so that the resin melts and becomes easily entangled with the fibers, and the fiber interval is shortened and the contact point between the fibers is increased. Thereby, a density increases and the intensity
  • a post-cutting unit 130 as a cutting unit for cutting the web W along the conveyance direction of the web W is disposed downstream of the heating and pressurization unit 150 in the conveyance direction of the web W.
  • the post-cutting unit 130 includes a cutter and cuts the web W according to a predetermined cutting position in the conveyance direction of the web W. Thereby, a sheet Pr (web W) having a desired size is formed. Then, the cut sheet Pr (web W) is stacked on the stacker 160 or the like.
  • the pipe 207 as the second transport path for returning the end material generated when the web W is cut by the rear cutting unit 130 to the defibrating unit 30 is from the position corresponding to the rear cutting unit 130. It is arranged over the position where it is put into 30.
  • the end material is returned to the defibrating unit 30 again as a material to be defibrated via the pipe 207 and defibrated, and becomes a raw material of the sheet again.
  • the mill ends are reused (reused) without being discarded.
  • the sheet according to the above-described embodiment mainly refers to a sheet formed from a material containing fibers such as waste paper and pure pulp.
  • the shape is not limited to that, and may be a board shape or a web shape (or a shape having irregularities).
  • the raw material may be plant fibers such as cellulose, chemical fibers such as PET (polyethylene terephthalate) and polyester, and animal fibers such as wool and silk.
  • the sheet is divided into paper and non-woven fabric.
  • the paper includes a thin sheet form, and includes recording paper for writing and printing, wallpaper, wrapping paper, colored paper, Kent paper, and the like.
  • Nonwoven fabrics are thicker or lower in strength than paper and include nonwoven fabrics, fiber boards, tissue paper, kitchen paper, cleaners, filters, liquid absorbents, sound absorbers, cushioning materials, mats, and the like.
  • the used paper mainly refers to printed paper. However, if used as a raw material, the used paper is regarded as used paper regardless of whether it is used.
  • the defibration processing amount that is the amount processed per unit time in the defibrating unit 30 is driven so as to be greater than or the same as the pulverization processing amount that is the amount processed per unit time in the crushing unit 20. Is done.
  • the strips roughly crushed by the crushing unit 20 are sent to the defibrating unit 30 and defibrated. At this time, if the amount of the coarse crushing treatment is larger than the amount of the defibrating treatment, the coarsely crushed pieces crushed by the crushing unit 20 in the defibrating unit 30 stay. In the defibrating unit 30, the coarse crushed pieces collide with the rotating rotor and are unraveled.
  • the colliding force is weakened and the crushed pieces are not sufficiently unraveled. This is not the case with the collision type, but also with the defibrating part that is crushed. That is, defibration is poor. Then, the defibration defect can be suppressed by making the amount of defibration processing of the defibrating unit 30 larger than the amount of crushing processing of the crushing unit 20. Moreover, the stay of the rough crushed pieces in the defibrating unit 30 can be reduced, or the stay of the coarse crushed pieces in the pipe 201 between the crushed portion 20 and the defibrating unit 30 can be reduced.
  • the processed amount per unit time is a value obtained by dividing the processed amount (g) by the processed time (s).
  • the processed time is the time spent for processing, and does not include unprocessed time. This may be replaced with a processing amount that can be processed per unit time in the crushing unit 20 and the defibrating unit 30.
  • the amount of pulverization processing of the pulverization unit 20 is made larger than the amount of defibration processing of the defibrating unit 30, and a small piece is temporarily stored between the pulverizing unit 20 and the defibrating unit 30 and stored. It is also conceivable to send the strips to the defibrating unit 30. However, it is very difficult to supply the strips quantitatively to the defibrating unit. In the case of the dry method, it is very difficult to quantitatively send the defibrated material that has become fibrous after defibrating. Therefore, it is sent quantitatively from the supply unit 10 to the crushing unit 20 and does not retain fine pieces between the crushing unit 20 and the defibrating unit 30, so that It can be sent quantitatively from the fiber part 30 to the downstream thereof.
  • the defibrating unit 30 is configured such that waste paper Pu from the crushing unit 20 and residue from the sorting unit 50 can be input. Since the residue from the sorting unit 50 is generated when the opening does not pass through the opening of the sorting unit 50, it is not regular and it is difficult to detect the amount of the residue. Therefore, the defibration amount is larger or the same as the sum of the passage amount passing through the pipe 205 per unit time and the roughing amount in the roughing unit 20. Thereby, even if the residue from the sorting unit 50 is mixed with the coarsely crushed pieces from the coarsely pulverizing unit 20, the amount of defibrating treatment becomes larger, so that retention in the defibrating unit 30 can be suppressed.
  • the used paper Pu and the cutting material 130 can be fed into the defibrating unit 30 from the coarse crushing unit 20.
  • the drive conditions of the defibrating unit 30 are such that the defibrating amount is larger than or equal to the sum of the passage amount passing through the pipe 207 per unit time and the crushing amount of the crushing unit 20. Is set. Thereby, even if the end material from the post-cutting part 130 is mixed with the coarsely crushed piece from the coarsely pulverizing part 20, the amount of defibrating treatment becomes larger, so that retention in the defibrating part 30 can be suppressed.
  • the fibrillation amount is greater than or equal to the sum of the passage amount passing through the pipe 205 per unit time, the passage amount passing through the pipe 207 per unit time, and the crushing amount in the crushing unit 20.
  • the driving conditions of the defibrating unit 30 may be set so that
  • the input is defibrated according to the input amount to the defibrating unit 30. This is possible by adjusting the strength of the airflow conveyed to 30 and the rotational speed of the rotor. For example, if the input amount from the crushing unit 20 is Ag, 0.1 Ag is re-input from the sorting unit 50 as a residue. In addition, 0.15 Ag is re-introduced as an end material in the rear cutting unit 130. Accordingly, in this case, the driving condition is set so that the defibrating unit 30 can process the input amount (A + 0.1A + 0.15A) g.
  • the defibrating unit 30 can suppress the staying of fine pieces and prevent defective defibration.
  • the residual portion generated in the sorting unit 50 and the end material generated in the post-cutting unit 130 are returned to the defibrating unit 30 via the pipe 205 and the pipe 207, but this configuration is limited. Not. A configuration in which the pipe 205 and the pipe 207 are omitted may be employed. In this way, the configuration of the sheet manufacturing apparatus 1 can be simplified. When the pipe 205 or the pipe 207 is omitted, the processing capacity of the defibrating unit 30 may be lower than the processing capacity of the defibrating unit 30 provided with the pipe 205 or the pipe 207. If it does in this way, condition management etc. can be performed easily by setting the processing conditions of the defibrating unit 30 corresponding only to the quantity of the crushing material thrown in from the crushing unit 20.
  • Modification 2 In the above-described embodiment, the configuration of the sheet manufacturing apparatus 1 including the crushing unit 20, the defibrating unit 30, and the like has been described. However, the raw material containing at least fibers is roughly crushed in air.
  • the present invention can also be applied to the configuration of a raw material defibrating apparatus including a crushing unit 20 that separates pieces and a defibrating unit 30 that defibrates fine pieces in air.
  • the defibration processing amount processed per unit time in the defibrating unit 30 is set to be larger or the same as the pulverization processing amount processed per unit time in the crushing unit 20. Even with this configuration, it is possible to obtain the same effect as that of the above embodiment.
  • the crushing unit 20 and the defibrating unit 30 may be invariable with a predetermined fixed processing amount. Further, the processing amount of at least one of the crushing unit 20 and the defibrating unit 30 may be variably controlled.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Forests & Forestry (AREA)
  • Nonwoven Fabrics (AREA)
  • Paper (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
PCT/JP2014/004952 2014-02-14 2014-09-26 シート製造装置、原料解繊装置 Ceased WO2015121903A1 (ja)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CN201480075492.9A CN105980619B (zh) 2014-02-14 2014-09-26 薄片制造装置、原料解纤装置
EP14882339.6A EP3106557B1 (en) 2014-02-14 2014-09-26 Sheet-manufacturing apparatus and raw material defibrating apparatus
EP21198452.1A EP3964619A1 (en) 2014-02-14 2014-09-26 Sheet manufacturing apparatus
US15/103,520 US10563351B2 (en) 2014-02-14 2014-09-26 Sheet manufacturing apparatus and material defibrating apparatus
EP21211148.8A EP3998380B1 (en) 2014-02-14 2014-09-26 Sheet manufacturing apparatus and material defibrating apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014-026327 2014-02-14
JP2014026327A JP6364804B2 (ja) 2014-02-14 2014-02-14 シート製造装置、原料解繊装置

Publications (1)

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WO2015121903A1 true WO2015121903A1 (ja) 2015-08-20

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PCT/JP2014/004952 Ceased WO2015121903A1 (ja) 2014-02-14 2014-09-26 シート製造装置、原料解繊装置

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US (1) US10563351B2 (enExample)
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EP3998380A1 (en) 2022-05-18
CN105980619B (zh) 2018-09-28
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