JP2018122558A - Device and method for producing weeding sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for producing a weeding sheet having high light blocking performance, without using water.SOLUTION: The device for producing a weeding sheet has: a supply part 200 that can supply raw material containing paper; a cutting part 10 that cuts the raw material into debris; a fibrillation part 30 that fibrillates the debris in the air to produce fibrillated cotton; a colored component adding part 10, 30 that adds a colored component to the fibrillated cotton; and a production part 300 that processes the fibrillated cotton to produce a weeding sheet.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a weed sheet manufacturing apparatus and a method for manufacturing a weed sheet.

  Conventionally, weeding sheets made of paper or the like are known (see, for example, Patent Document 1). Further, a paper recycling apparatus that forms recycled paper from waste paper is known (see, for example, Patent Document 2).

JP 2008-92931 A JP, 2015-127148, A

  However, when the color of the weeding sheet or recycled paper is white, there is a problem that the shading effect is low and the weeding effect cannot be obtained.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.

  Application Example 1 A weeding sheet manufacturing apparatus according to this application example includes a supply unit capable of supplying a raw material including paper, a cutting unit that cuts the raw material into strips, and defibrates the strips in the air. The disentanglement part which manufactures a disentanglement cotton, The colored component addition part which adds a colored component to the said disentanglement cotton, and the manufacture part which processes the said disentanglement cotton and manufactures a weeding sheet | seat is characterized by the above-mentioned.

  According to this structure, a weeding sheet can be manufactured using paper as a raw material without using water. Moreover, since the weeding sheet manufactured in this way contains a colored component, the light shielding property can be improved and the weeding effect can be improved. Furthermore, since the weeding sheet is decomposed by microorganisms or the like in the natural environment, the load on the natural environment can be reduced.

  Application Example 2 In the herbicidal sheet manufacturing apparatus according to the application example, the colored component is a colored substance obtained by being separated from the strip in the step of defibrating the strip at the defibrating unit. It is characterized by being configured to return the colored substance to the defibrated cotton.

  According to this structure, the weeding sheet | seat which has a colored component can be easily manufactured by adding the colored substance (for example, black ink, black toner, etc.) once separated from paper to the defibrated cotton after defibration. . That is, the colored material can be reused, and the apparatus configuration can be simplified.

  Application Example 3 The herbicidal sheet manufacturing apparatus according to the application example further includes a detection unit that detects a color density of the defibrated cotton, and the color component addition unit is configured to make the color density equal to or higher than a predetermined density. It is characterized by being.

  According to this configuration, the colored density of the defibrated cotton is maintained at a predetermined density or higher. Thereby, the weeding sheet | seat with which the colored density was stabilized can be manufactured.

Application Example 4 In the weeding sheet manufacturing apparatus according to the application example, the weeding sheet is characterized in that the light transmittance is less than 10% and the mass is 50 to 500 g / m ² .

  According to this structure, the weeding sheet | seat which has the stable light-shielding property can be provided.

  Application Example 5 The herbicidal sheet manufacturing apparatus according to the application example described above is characterized in that the defibrated cotton is dispersed and deposited on a three-dimensional mold, and then a three-dimensional object is obtained by heat treatment.

  According to this configuration, it is possible to flexibly cope with the form of the place where the weeding sheet is installed.

  [Application Example 6] The herbicidal sheet manufacturing apparatus according to the application example described above further includes a herbicide addition unit that causes the herbicidal sheet to contain a herbicide.

  According to this structure, since the herbicide is contained in the herbicidal sheet, the herbicidal effect can be further enhanced.

  Application Example 7 The herbicidal sheet manufacturing apparatus according to the application example described above includes an ink jet apparatus that can form an image by discharging ink.

  According to this configuration, it is possible to flexibly cope with the environment and landscape where the weeding sheet is installed by forming images such as pictures, characters, and figures.

  Application Example 8 In the weeding sheet manufacturing apparatus according to the application example, the ink is an organic ink.

  According to this configuration, the load on the natural environment can be reduced.

  [Application Example 9] A method for manufacturing a weeding sheet according to this application example includes a supplying step capable of supplying a raw material including paper, a cutting step of cutting the raw material into strips, and defibrating the strips in the air. And a defibrating step for producing defibrated cotton, a colored component adding step for adding a colored component to the defibrated cotton, and a manufacturing step for producing a herbicidal sheet by processing the defibrated cotton.

  According to this structure, a weeding sheet can be manufactured using paper as a raw material without using water. Moreover, since the weeding sheet manufactured in this way contains a colored component, the light shielding property can be improved and the weeding effect can be improved. Furthermore, since the weeding sheet is decomposed by microorganisms or the like in the natural environment, the load on the natural environment can be reduced.

Schematic which shows the structure of the weeding sheet manufacturing apparatus concerning 1st Embodiment. Schematic which shows the structure of the weeding sheet manufacturing apparatus concerning 2nd Embodiment. Schematic which shows the structure of the weeding sheet manufacturing apparatus concerning 3rd Embodiment. Schematic which shows the structure of the weeding sheet manufacturing apparatus concerning 4th Embodiment. The flowchart which shows the weeding sheet manufacturing method concerning 5th Embodiment. The flowchart which shows the weeding sheet manufacturing method concerning 6th Embodiment. The flowchart which shows the weeding sheet manufacturing method concerning 7th Embodiment. The flowchart which shows the weeding sheet manufacturing method concerning 8th Embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following drawings, the scale of each member or the like is shown differently from the actual scale so as to make each member or the like recognizable.

(First embodiment)
First, the structure of the weeding sheet manufacturing apparatus will be described. FIG. 1 is a schematic view showing a configuration of a weed sheet manufacturing apparatus according to this embodiment. The weeding sheet manufacturing apparatus according to the present embodiment is based on a technique for manufacturing a weeding sheet from paper such as waste paper by a dry method that uses water as little as possible.

  As shown in FIG. 1, the weeding sheet manufacturing apparatus 1 </ b> A includes a supply unit 200, a cutting unit 10, a defibrating unit 30, and a manufacturing unit 300. Furthermore, the weed sheet manufacturing apparatus 1 </ b> A includes a detection unit 190 and an ink jet device 130. Moreover, the control part 2 which controls each of these parts is provided. The supply unit 200, the cutting unit 10, the defibrating unit 30, and the like correspond to a part of the colored component addition unit according to the present embodiment.

The supply unit 200 is configured to be able to supply a raw material including paper toward the cutting unit 10. The raw material including the paper to be supplied is, for example, used paper such as A4 size which is currently mainstream in offices. This embodiment demonstrates the case where the weeding sheet Ps is manufactured by supplying the used paper Pu as a raw material.
The supply unit 200 includes a used paper storage unit 5 that stores the used paper Pu, and a transport roller 6 as a transport unit that transports the used paper Pu stored in the used paper storage unit 5, and the cutting unit 10 is driven by the transport roller 6. The used paper Pu is conveyed toward the front.

  The cutting unit 10 cuts the supplied used paper Pu into strips in the air. The cutting unit 10 has a rough crushing blade 11 and cuts the used paper Pu supplied by the crushing blade 11 into several centimeters square. The cutting unit 10 can use, for example, a shredder. The roughly crushed paper pieces cut into the fine pieces are transferred from the hopper 12 through the pipe 20 to the defibrating unit 30.

  The defibrating unit 30 defibrates the used paper Pu (crushed paper pieces) cut by the cutting unit 10. Here, “defibrating” in the present specification refers to unwinding the used paper Pu as a material to be defibrated formed by binding a plurality of fibers into one fiber. The defibrating unit 30 also has a function of separating foreign matters and the like attached to the used paper Pu from the fibers.

  The raw fiber formed after passing through the defibrating unit 30 is referred to as “defibrated material”. In addition to the defibrated fiber that has been unwound, the “defibrated material” may include foreign matter or the like separated from the fiber when the fiber is unwound. The defibrated material corresponds to defibrated cotton (regenerated pulp).

The defibrating unit 30 uses a so-called dry method in the atmosphere (in the air) without using a solvent, water, or the like. Specifically, an impeller mill is used as the defibrating unit 30. The defibrating unit 30 has a function of sucking the used paper Pu (crushed paper pieces) and generating an air flow that discharges the defibrated material. Thereby, the defibrating unit 30 can suck the crushed paper pieces from the introduction port 31 together with the air current by the air flow generated by itself, defibrate, and transport the defibrated material to the discharge port 32. The defibrated material that has passed through the defibrating unit 30 is transferred to the manufacturing unit 300 via the tube 40. In addition, the airflow for conveying the defibrated material from the defibrating unit 30 to the manufacturing unit 300 may use an airflow generated in the defibrating unit 30, or an airflow generating device such as a blower is provided, May be used.
Here, since the ink or toner printed on the used paper Pu (crushed paper pieces) is pulverized by the defibrating process by the defibrating unit 30, the output from the discharge port 32 of the defibrating unit 30 is defibrated material. (Fiber) and ink particles.
In this embodiment, the weeding sheet Ps is manufactured in a state where the ink particles are added to the defibrated material as a colored substance having a colored component without removing the ink particles. The colored substance has a colored component other than transparent (for example, black, red, blue, green, yellow, white, etc.).
The colored material is, for example, a black ink material such as black ink or black toner, and the black weed sheet Ps can be produced by adding the black ink material to the defibrated material. That is, by adding a colored substance to the herbicidal sheet Ps, the herbicidal sheet Ps is colored, and it is possible to produce the herbicidal sheet Ps having a light shielding effect and a herbicidal effect as compared with the white type. In addition, the said supply part 200, the defibrating part 30, etc. respond | correspond to the colored component addition part which adds a colored component.

  The manufacturing unit 300 manufactures the weeding sheet Ps by processing a defibrated material including an additive having a colored component, and includes a deposition unit 100, a heater roller 140, a calendar roller 150, and the like.

  The depositing unit 100 has a mechanism for uniformly dispersing the defibrated material in the air and a mechanism for sucking the fibers dispersed thereby on the mesh belt 122.

  A small-hole screen is provided on the surface of the forming drum 101 in the deposition unit 100, from which fibers are discharged. Further, a rotatable needle roll 102 is provided inside the forming drum 101 so that fibers are floated so as not to clog the small hole screen on the surface of the forming drum 101. The two forming drums 101 communicate with each other at a location not shown. With the configuration described above, the fibers are uniformly dispersed in the air.

  An endless mesh belt 122 on which a mesh stretched by a plurality of stretching rollers 121 is formed is disposed below the accumulation unit 100. When at least one of the plurality of stretching rollers 121 rotates, the mesh belt 122 moves in a direction indicated by an arrow in the figure. Further, the surface of the mesh belt 122 is removed by a cleaning blade 123 in contact with the mesh belt 122.

  A suction device 110 that generates an airflow directed vertically downward is provided below the two forming drums 101 via a mesh belt 122. Such a suction device 110 sucks the fibers dispersed in the air onto the mesh belt 122.

  In the configuration as described above, the defibrated material including the colored component conveyed through the tube 40 is introduced into the deposition unit 100. In the depositing unit 100, it is loosened with a needle roll 102 or the like. The loosened fibers pass through a small hole screen on the surface of the forming drum 101 and are deposited on the mesh belt 122 by the suction force of the suction device 110. At this time, the uniform sheet-like web W can be formed by moving the mesh belt 122. The mesh belt 122 may be made of metal, resin, or non-woven fabric as long as fibers can be accumulated and an air stream can pass therethrough.

  The web W deposited on the mesh belt 122 is heated and pressurized by a heater roller 140 disposed on the downstream side of the deposition unit 100 in the web W conveyance direction. Thereby, the weeding sheet Ps is formed. Further, the weeding sheet Ps is subjected to a surface smoothing process by a calendar roller 150 disposed downstream of the heater roller 140 in the web W conveyance direction. Thereafter, the sheet is cut into a desired size by the cutter 160 to form the weeding sheet Ps. The weeding sheet Ps is loaded on the stacker 170 or the like. In addition, you may form in the form of a long roll, without cutting the weeding sheet Ps.

In addition, the weed sheet manufacturing apparatus 1A of the present embodiment includes an ink jet apparatus 130 that can form an image by ejecting ink. The ink jet apparatus 130 according to the present embodiment is disposed on the transport path of the web W between the deposition unit 100 and the heater roller 140. The ink jet apparatus 130 includes an ejection head capable of ejecting ink as droplets, and ejects each color ink from the ejection head toward the web W, thereby forming an image such as a pattern, a character, or a graphic on the web W. Can do. Thereby, the weeding sheet | seat Ps matched with the environment or the landscape can be manufactured.
In addition, organic ink is preferably used as the ink ejected from the inkjet device 130. By using various organic inks, the weeding sheet Ps in consideration of the natural environment can be manufactured.
As an ink discharge method for the ink jet apparatus 130, a piezo method, a method of discharging a liquid by bubbles generated by heating ink, or the like can be used.

  Further, since the ink jet device 130 is disposed on the upstream side in the transport direction of the web W of the heater roller 140, the web W is heated and pressurized by the heater roller 140 in a state including moisture in the ejected ink. This enhances the hydrogen bonds between the fibers, shortens the fiber spacing, and increases the contact points between the fibers. Thereby, the intensity | strength of the weeding sheet | seat Ps can further be raised.

In addition, the weeding sheet manufacturing apparatus 1A of the present embodiment includes a detection unit 190 that detects the color density of the defibrated material. The detection unit 190 is disposed on the downstream side in the transport direction of the web W of the deposition unit 100. More specifically, the detection unit 190 is disposed on the conveyance path of the web W between the deposition unit 100 and the inkjet device 130.
The detection unit 190 includes a light receiving element (for example, a CCD sensor, a CMOS sensor, or the like) that receives reflected light from the web W. The light receiving element of the detection unit 190 captures the image information (detection data) of the contrast of the web W, and the control unit 2 compares the image information with the contrast information of each paper type as evaluation data prepared in advance. Thus, the color density of the web W is determined. The detection unit 190 is not limited to the above configuration, and may be a configuration that detects the amount of transmitted light irradiated to the web W and determines the color density of the web W based on the detected amount of transmitted light, for example. Further, the configuration may be such that the spectrum of the light reflected by the web W or the near-infrared light to be absorbed is detected, and the colored density of the web W is determined based on near-infrared light spectrum analysis. Furthermore, the structure which discriminate | determines the colored density of the web W by receiving the ultrasonic wave which generate | occur | produces at the time of conveyance of the web W, and analyzing the frequency spectrum may be sufficient.

  In the present embodiment, the detection units 190 (191, 192) are arranged so as to face both surfaces of the web W, and are configured to be able to detect each surface of the web W.

The colored component addition unit is configured to set the color density to a predetermined density or higher based on the detection data of the detection unit 190.
In this case, for example, when it is determined that the color density is less than the predetermined density, the supply unit 200 may input more waste paper Pu having a large amount of print data, that is, a large amount of ink.
When the detection unit 190 determines that the color density is less than the predetermined density, the ink jet device 130 is driven and ink (for example, black ink) is applied to the web W so that the color density is equal to or higher than the predetermined density. It may be discharged.
Thereby, the colored density of the weeding sheet Ps is kept at a predetermined density or more, and can have a stable light shielding property.

As described above, the weeding sheet Ps produced by the weeding sheet production apparatus 1A of the present embodiment has a light transmittance of less than 10% and a mass of 50 to 500 g / m ² . Therefore, the weeding sheet Ps having a stable light shielding property can be provided.

  As described above, according to the present embodiment, the following effects can be obtained.

  The herbicidal sheet Ps can be produced using waste paper Pu as a raw material without using water. Moreover, since the weeding sheet Ps manufactured in this way contains a colored component, it can improve light-shielding property and improve the weeding effect. Furthermore, since the weeding sheet Ps is decomposed by microorganisms or the like in the natural environment, the weeding sheet Ps in consideration of the natural environment can be produced.

(Second Embodiment)
Next, a second embodiment will be described. FIG. 2 is a schematic view showing the configuration of the weed sheet producing apparatus according to the present embodiment. The weeding sheet manufacturing apparatus according to the present embodiment is based on a technique for manufacturing a weeding sheet from paper such as waste paper by a dry method that uses water as little as possible.
In the weeding sheet manufacturing apparatus of the present embodiment, the colored component is a colored material obtained by being separated from the strip in the step of defibrating the strip at the defibrating unit, and the colored material is returned to the defibrated cotton. It is configured as follows. That is, for example, when waste paper Pu with a metal object such as a stapler needle is supplied, the metal object is mixed into the manufactured weed sheet Pu. For this reason, in the present embodiment, after separating a colored substance (for example, black ink, black toner, etc.) or foreign matter from the defibrated material once, only the colored material is returned to the defibrated material, Produce environmentally friendly weed sheet Pu.
Hereinafter, a specific configuration will be described.

As shown in FIG. 2, the weeding sheet manufacturing apparatus 1 </ b> B includes a supply unit 200, a cutting unit 10, a defibrating unit 30, a manufacturing unit 300, a detection unit 190, and an inkjet device 130. Furthermore, the weeding sheet manufacturing apparatus 1B includes a cyclone 50, a foreign matter separation unit 350, a colored component addition unit, and the like. Moreover, the control part 2 which controls these each part etc. is provided.
Since the configuration other than the cyclone 50, the foreign matter separation unit 350, and the colored component addition unit is the same as the configuration of the first embodiment, the description thereof is omitted.

  Waste paper Pu is supplied from the supply unit 200 and the defibrated material that has passed through the defibrating unit 30 is introduced into the cyclone 50 via the tube 40. Here, a tube diameter reducing portion 45 is provided in the middle of the tube 40. The tube diameter reducing unit 45 functions as an adjusting unit that adjusts the airflow that conveys fibers in the tube 40. That is, in such an adjustment part, the adjustment of the air flow which conveys the fiber in the pipe | tube 40 is performed by adjusting the conveyance cross section of the pipe | tube 40. FIG. As a result, the airflow velocity at the introduction port 51 of the cyclone 50 is adjusted to be larger than the airflow velocity at the discharge port 32 of the defibrating unit 30.

  A deinking process is performed in the cyclone 50, and the fibers conveyed by the pipe 40 are classified into air currents into ink particles (colored substances) and deinked fibers. The cyclone 50 also classifies metallic foreign matters (metal objects such as stapler needles) together with ink particles. In the present invention, other types of airflow classifiers can be used instead of the cyclone 50. As 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 and separates and classifies the introduced mixture according to its centrifugal force and size, and the classification point can be adjusted by adjusting the speed and centrifugal force of the airflow.

  The cyclone 50 is a tangential input type cyclone. The cyclone 50 includes an introduction port 51, a cylindrical portion 52 in which the introduction port 51 is tangential, a reverse conical portion 53 following the cylindrical portion 52, a lower outlet 54 provided at the apex of the reverse conical portion 53, and an upper center of the cylindrical portion 52. It is comprised from the upper exhaust port 55 for the fine powder discharge | emission provided in this. The defibrated material (a mixture of fibers, ink particles, and foreign matter) riding on the air current is introduced from the introduction port 51.

  The airflow on which the defibrated material introduced from the introduction port 51 of the cyclone 50 is changed into a circumferential motion in the cylindrical portion 52, is subjected to a centrifugal force, and the fibers are entangled and increased due to a synergistic effect with the airflow. Are separated and moved to the inverted conical portion 53, and the separated ink particles and foreign matter are led to the upper exhaust port 55 as fine powder together with air.

  Ink particles and foreign matter discharged from the upper exhaust port 55 of the cyclone 50 in the airflow are introduced into the foreign matter separation unit 350 through the pipe 70.

The foreign matter separation unit 350 is a device that separates ink particles (colored substances) and metallic foreign matter. The foreign matter separation unit 350 is a separation device including a magnetic field generator using a magnet (such as a permanent magnet or an electromagnetic magnet). Of the ink particles (colored substance) and the metallic foreign matter introduced into the foreign matter separating unit 350, the metallic foreign matter is attracted to the magnet. On the other hand, the ink particles are not attracted by the magnet. Thereby, ink particles (colored substance) and metallic foreign matter are separated. The separated ink particles are stored in the first storage portion 355. Further, the metallic foreign matter is scraped off from the magnet and stored in the second storage portion 356.
The foreign matter separation unit 350 is not limited to a separation mechanism using a magnetic field, and may be, for example, a specific gravity separation mechanism using specific gravity or an electrostatic separation mechanism using static electricity.

  Further, the defibrated material discharged from the lower outlet 54 of the cyclone 50 is conveyed to the mixing unit 60 through the pipe 71. On the other hand, the first storage portion 355 in which the ink particles are stored is connected to the mixing unit 60 via the tube 72. A valve 405 that can be controlled to open and close is provided in the middle of the pipe 72. The ink particles stored in the first storage unit 355 are conveyed to the mixing unit 60 via the valve 405.

The mixing unit 60 is a mixing blower, and mixes the defibrated material discharged from the lower outlet 54 of the cyclone 50 and the ink particles stored in the first storage unit 355. That is, it is configured to classify the airflow with the cyclone 50 and return the ink particles (colored substance) separated by the foreign matter separation unit 350 to the defibrated material again. Therefore, the 1st accommodating part 355, the pipe | tube 72, the valve | bulb 405, etc. respond | correspond to a colored component addition part.
In the mixing unit 60, an air flow is generated by the mixing blower, and the defibrated material and the ink particles are mixed and conveyed to the manufacturing unit 300 via the pipe 73. Thereby, the defibrated material including the colored component is conveyed to the manufacturing unit 300.

In the manufacturing unit 300, the defibrated material is subjected to various treatments as described in the first embodiment, and a weeding sheet Ps including a colored component is formed.
In addition, since the inkjet device 130 is arrange | positioned at the weeding sheet manufacturing apparatus 1B of this embodiment, the weeding sheet Ps in which images, such as a pattern, a character, and a figure, were formed can be manufactured.

Further, the colored component addition unit of the weed sheet manufacturing apparatus 1B is configured to set the color density to a predetermined density or higher based on the detection data of the detection unit 190.
In this case, for example, when it is determined that the color density is less than the predetermined density, the valve 405 is controlled to introduce a larger amount of ink particles into the mixing unit 60. Thereby, the colored density of the defibrated material can be increased.
When the detection unit 190 determines that the color density is less than the predetermined density, the ink jet device 130 is driven and ink (for example, black ink) is applied to the web W so that the color density is equal to or higher than the predetermined density. It may be discharged.
Thereby, the colored density of the weeding sheet Ps is kept at a predetermined density or more, and can have a stable light shielding property.

As described above, the weeding sheet Ps manufactured by the weeding sheet manufacturing apparatus 1B according to the present embodiment has a light transmittance of less than 10% and a mass of 50 to 500 g / m ² . Therefore, it is possible to provide a weeding sheet having stable light shielding properties.

  As described above, according to the present embodiment, the following effects can be obtained.

By adding a colored substance (for example, black ink, black toner, etc.) once separated from the supplied used paper Pu to the defibrated cotton after defibrating, the weeding sheet Ps having a colored component can be easily produced. That is, since the colored material can be reused, a colored material having a separate colored component can be eliminated.
Furthermore, since the metallic foreign matter is removed by the foreign matter separating unit 350, the weeding sheet Ps in consideration for the environment can be provided.

(Third embodiment)
Next, a third embodiment will be described. FIG. 3 is a schematic view showing the configuration of the weed sheet producing apparatus according to this embodiment. The weeding sheet manufacturing apparatus according to the present embodiment is based on a technique for manufacturing a weeding sheet from paper such as waste paper by a dry method that uses water as little as possible.
In the weed sheet manufacturing apparatus of this embodiment, a defibrated material (defibrated cotton) is dispersed and deposited on a three-dimensional mold, and then a three-dimensional object is obtained by heat treatment. Hereinafter, a specific configuration will be described.

As shown in FIG. 3, the weed sheet manufacturing apparatus 1 </ b> C includes a supply unit 200, a cutting unit 10, a defibrating unit 30, a manufacturing unit 300 a, and an inkjet device 130.
Since the configuration other than the manufacturing unit 300a is the same as the configuration of the first embodiment, the description thereof is omitted.

  The manufacturing unit 300a includes a deposition unit 100, a mold molding unit 600, and the like. In addition, since the structure of the deposition part 100 is the same as that of 1st Embodiment, description is abbreviate | omitted.

  The mold molding unit 600 includes a convex mold 611 as a mold, a concave mold 612 corresponding to the convex mold 611, and the like. The convex mold 611 and the concave mold 612 are heated to a predetermined temperature. The convex mold 611 is set below the deposition unit 100. Then, the defibrated material from the deposition unit 100 is dispersed and deposited on the convex mold 611. Thereby, the deposit Fc is formed on the convex mold 611. Note that the convex mold 611 may be formed to be porous, and the defibrated material may be deposited on the convex mold 611 using a suction mechanism or the like.

Then, the convex mold 611 on which the deposit Fc is deposited is moved by a moving mechanism (not shown) so as to face the concave mold 612. Thereafter, the deposit Fc is heated and pressurized with the convex mold 611 and the concave mold 612. Thereby, the three-dimensional object Fd (herbicidal sheet having a three-dimensional shape) is formed. Note that pressure adjustment of the convex mold 611 and the concave mold 612 can be performed, and the density, thickness, and the like of the three-dimensional object Fd can be controlled by performing pressure adjustment. Further, surface treatment or the like may be performed on the formed three-dimensional object Fd as necessary.
Moreover, the solid thing Fd (weeding sheet | seat Fd which has a three-dimensional shape) which has various shapes can be manufactured by using the metal mold | die which has various shapes.

  In the present embodiment, an image is formed on the deposit Fc deposited on the convex mold 611 by the inkjet device 130. Thereby, the three-dimensional object Fd (the weeding sheet Fd which has a three-dimensional shape) which has an image can be manufactured.

  As described above, according to the present embodiment, the following effects can be obtained.

  A three-dimensional weeding sheet Fd can be formed in accordance with the form of the place where the weeding sheet Fd is arranged. In addition, by providing a through hole, a cut, or the like in the three-dimensional weeding sheet Fd, it is possible to provide an easy-to-use weeding sheet Fd.

(Fourth embodiment)
Next, a fourth embodiment will be described. FIG. 4 is a schematic diagram showing the configuration of the weed sheet producing apparatus according to the present embodiment. The weeding sheet manufacturing apparatus according to the present embodiment is based on a technique for manufacturing a weeding sheet from paper such as waste paper by a dry method that uses water as little as possible.

As shown in FIG. 4, the weeding sheet manufacturing apparatus 1 </ b> D includes a supply unit 200, a cutting unit 10, a defibrating unit 30, a manufacturing unit 300, a detection unit 190, and an inkjet device 130. Furthermore, the herbicidal sheet manufacturing apparatus 1D includes a herbicide adding unit 500.
In addition, since it is the same as that of 1st Embodiment about structures other than the herbicide addition part 500, description is abbreviate | omitted.

The herbicide addition unit 500 is for adding a herbicide to the web W deposited on the mesh belt 122. The herbicide addition unit 500 of this embodiment is arranged on the conveyance path of the web W between the deposition unit 100 and the heater roller 140. Then, the herbicide adding unit 500 sprays the additive toward the web W. Thereby, the weeding sheet Ps containing the additive can be produced.
In addition, the addition process of the additive to the web W may be performed before the image formation by the ink jet apparatus 130 or may be performed after the image is formed.

  Further, the additive may be applied to the web W by discharging the herbicide from the discharge head using the inkjet device 130.

  As described above, according to the present embodiment, the following effects can be obtained.

  Since the herbicide is contained in the herbicidal sheet Ps containing the colored component, the herbicidal effect can be further enhanced.

(Fifth embodiment)
Next, a fifth embodiment will be described.
5th Embodiment demonstrates the manufacturing method of a weeding sheet. Specifically, the manufacturing method of the weeding sheet | seat by the weeding sheet manufacturing apparatus 1A concerning 1st Embodiment is demonstrated (refer FIG. 1). FIG. 5 is a flowchart showing a method of manufacturing the weeding sheet according to the present embodiment.

As shown in FIG. 5, the manufacturing method of the weeding sheet | seat of this embodiment is the supply process (S11) which can supply the raw material containing paper, the cutting process (S12) which cuts a raw material into a strip, A defibrating step (S13) for defibrating and producing defibrated cotton in the atmosphere, a colored component adding step (S14) for adding a colored component to the defibrated cotton, and a manufacturing step (S15-) for processing the defibrated cotton to produce a herbicidal sheet. S17).
This will be specifically described below.

(Supply process)
In the supplying step (S <b> 11), the used paper Pu as a raw material including paper is stored in the used paper storage unit 5, the transport roller 6 is driven, and the used paper Pu is supplied toward the cutting unit 10.

(Cutting process)
In the cutting step (S12), the supplied used paper Pu is cut into strips of several centimeters square by the rough crushing blade 11 of the cutting unit 10. The strips cut by the cutting step (S12) are transferred to the defibrating step (S13).

(Defibration process)
In the defibrating step (S13), the defibrating unit 30 defibrates the raw material Pu that has been cut into pieces into individual fibers. In the defibrating step (S13) according to the present embodiment, so-called dry defibrating is performed in which defibrating is performed in the air (in the air) without using a solvent, water, or the like. The defibrated material defibrated in the defibrating step (S13) is transferred to the colored component addition step (S14).

(Colored component addition process)
In the colored component addition step (S14), the defibrated material is directly transferred from the defibrating unit 30 toward the deposition unit 100. That is, since the defibrated material contains ink particles (colored material having a colored component) in addition to the fibers, the ink particles are transferred to the deposition unit 100 together with the fibers as colored materials. Thereby, the fiber containing a colored substance is transferred.

(Deposition process)
In the deposition step (S15), the defibrated material containing the colored substance is uniformly dispersed in the air on the mesh belt 122 by the deposition unit 100.

(Image formation process)
In the image forming step (S <b> 16), ink is ejected to the defibrated material (web W) deposited on the mesh belt 122 using the inkjet device 130, and an image is formed on the web W. The image formed on the web W includes a pattern, characters, figures, and the like.
The image forming step (S16) can be omitted.

(Heating / pressurizing process)
In the heating / pressurizing step (S17), the web W on which the image is formed is heated / pressurized by the heater roller 140. Further, the surface may be smoothed by the calendar roller 150. Thereby, the weeding sheet Ps is formed.
In addition, you may cut the weeding sheet | seat Ps to a desired size as needed.

  As described above, according to the present embodiment, the following effects can be obtained.

  The herbicidal sheet Ps can be produced using waste paper Pu as a raw material without using water. Moreover, since the weeding sheet Ps manufactured in this way contains a colored component, it can improve light-shielding property and improve the weeding effect. Furthermore, since the weeding sheet Ps is decomposed by microorganisms or the like in the natural environment, the weeding sheet Ps in consideration of the natural environment can be produced.

(Sixth embodiment)
Next, a sixth embodiment will be described.
In the sixth embodiment, a method for manufacturing a weeding sheet will be described. Specifically, the manufacturing method of the weeding sheet | seat by the weeding sheet manufacturing apparatus 1B concerning 2nd Embodiment is demonstrated (refer FIG. 2). FIG. 6 is a flowchart showing a method of manufacturing the weeding sheet according to the present embodiment.

As shown in FIG. 6, the manufacturing method of the weeding sheet | seat of this embodiment has the supply process (S21) which can supply the raw material containing paper, the cutting process (S22) which cuts a raw material into a strip, A defibrating step (S23) for defibrating in the atmosphere to produce a defibrated cotton, a colored component adding step (S24 to S26) for adding a colored component separated by the defibrating treatment to the defibrated cotton, and processing the defibrated cotton to weed Manufacturing steps (S27 to S29) for manufacturing the sheet.
This will be specifically described below.

(Supply process)
In the supplying step (S <b> 21), the used paper Pu as a raw material including paper is stored in the used paper storage unit 5, the transport roller 6 is driven, and the used paper Pu is supplied toward the cutting unit 10.

(Cutting process)
In the cutting step (S22), the supplied used paper Pu is cut into strips of several centimeters square by the crushing blade 11 of the cutting unit 10. The strips cut by the cutting step (S22) are transferred to the defibrating step (S23).

(Defibration process)
In the defibrating step (S23), the defibrating unit 30 defibrates the pulverized raw material Pu into fibers one by one. In the defibrating step (S23) according to the present embodiment, so-called dry defibrating is performed in which defibrating is performed in the air (in the air) without using a solvent, water, or the like. The defibrated material (defibrated cotton) defibrated in the defibrating step (S23) is transferred to the airflow classification step (S24).

(Airflow classification process)
In the air flow classification step (S24), the defibrated material is classified into ink particles (colored substances) and deinked fibers using a cyclone 50. The cyclone 50 classifies metallic foreign matters (metal objects such as stapler needles) together with ink particles.
Then, the deinked fiber moves to the deposition step (S27). On the other hand, the ink particles and the metallic foreign matter move to the foreign matter separation step (S25).

(Foreign matter separation process)
In the foreign matter separation step (S25), the foreign matter separation unit 350 is used to separate the ink particles (colored substance) and the metallic foreign matter. The ink particles are stored in the first storage portion 355.

(Colored component addition process)
In the colored component addition step (S26), ink particles (colored material) from which foreign matters have been removed are added to the defibrated material that has been air-flow classified. In other words, the colored material once separated is returned to the manufacturing process. Then, the defibrated material and the ink particles (colored material) are mixed in the mixing unit 60.

(Deposition process)
In the deposition step (S27), the defibrated material containing ink particles (colored material) is uniformly dispersed in the air on the mesh belt 122 by the deposition unit 100, and the web W is formed.

(Image formation process)
In the image forming step (S <b> 28), ink is ejected to the defibrated material (web W) deposited on the mesh belt 122 using the inkjet device 130, and an image is formed on the web W. The image formed on the web W includes a pattern, characters, figures, and the like.
Note that the image forming step (S28) can be omitted.

(Heating / pressurizing process)
In the heating / pressurizing step (S29), the web W on which the image is formed is heated / pressurized by the heater roller 140. Further, the surface may be smoothed by the calendar roller 150. Thereby, the weeding sheet Ps is formed.
In addition, you may cut the weeding sheet | seat Ps to a desired size as needed.

  As described above, according to the present embodiment, the following effects can be obtained.

A herbicidal sheet Ps having a colored component can be easily produced by adding a colored substance (for example, black ink, black toner, etc.) once separated from the supplied used paper Pu to the defibrated material after defibrating. it can. That is, since the colored material can be reused, a colored material having a separate colored component can be eliminated.
Furthermore, since the metallic foreign matter is removed by the foreign matter separating step (S25), it is possible to provide the weeding sheet Ps in consideration for the environment.

(Seventh embodiment)
Next, a seventh embodiment will be described.
7th Embodiment demonstrates the manufacturing method of a weeding sheet. Specifically, the manufacturing method of the weeding sheet | seat by the weeding sheet manufacturing apparatus 1C concerning 3rd Embodiment is demonstrated (refer FIG. 3). FIG. 7 is a flowchart showing a method of manufacturing a weed sheet according to this embodiment.

As shown in FIG. 7, the manufacturing method of the weeding sheet | seat of this embodiment has the supply process (S31) which can supply the raw material containing paper, the cutting process (S32) which cuts a raw material into a strip, A defibrating step (S33) for producing defibrated cotton by defibration in the atmosphere, a colored component addition step (S34) for adding a colored component to the defibrated cotton, and processing the defibrated cotton by molding to form a three-dimensional weeding sheet. Manufacturing steps (S35 to S37) to be manufactured.
In addition, a supply process (S31), a cutting process (S32), a fibrillation process (S33), and a colored component addition process (S34) are a supply process (S11), a cutting process (S12), and a defibration process in the fifth embodiment. Since it is the same as (S13) and the colored component addition step (S14), the description is omitted.

(Deposition process)
In the deposition step (S35), the defibrated material containing ink particles (colored substance) is uniformly dispersed in the air on the convex mold 611 of the mold molding unit 600 by the deposition unit 100, and the deposit Fc is deposited on the convex mold 611. Form.

(Image formation process)
In the image forming step (S36), ink is ejected to the deposit Fc deposited on the convex mold 611 using the inkjet device 130, and an image is formed on the deposit Fc. The image formed on the deposit Fc includes a pattern, characters, figures, and the like.
Note that the image forming step (S36) can be omitted.

(Mold molding process)
In the mold forming step (S37), the deposit Fc is heated and pressurized with the convex mold 611 and the concave mold 612. Thereby, the three-dimensional object Fd (herbicidal sheet having a three-dimensional shape) is formed.

  As described above, according to the present embodiment, the following effects can be obtained.

  A three-dimensional weeding sheet Fd can be formed in accordance with the form of the place where the weeding sheet Fd is arranged. In addition, by providing a through hole, a cut, or the like in the three-dimensional weeding sheet Fd, it is possible to provide an easy-to-use weeding sheet Fd.

(Eighth embodiment)
Next, an eighth embodiment will be described.
In the eighth embodiment, a method for producing a weeding sheet will be described. Specifically, the manufacturing method of the weeding sheet | seat by the weeding sheet manufacturing apparatus 1D concerning 4th Embodiment is demonstrated (refer FIG. 4). FIG. 8 is a flowchart showing a method of manufacturing the weeding sheet according to the present embodiment.

As shown in FIG. 8, the manufacturing method of the weeding sheet | seat of this embodiment is a supply process (S41) which can supply the raw material containing paper, the cutting process (S42) which cuts a raw material into a strip, A defibrating step (S43) for defibrating and producing defibrated cotton, a colored component adding step (S44) for adding a colored component to the defibrated cotton, and a manufacturing step (S45) for processing a defibrated cotton to produce a herbicidal sheet. S47). Moreover, in this embodiment, the herbicide addition process (S46) which adds a herbicide is included.
The supply process (S41), the cutting process (S42), the defibration process (S43), the colored component addition process (S44), and the deposition process (S45) are the supply process (S11) and the cutting process (S45) in the fifth embodiment. Since it is the same as S12), defibration process (S13), colored component addition process (S14), and deposition process (S15), the description is omitted.

(Herbicide addition process)
In the herbicide adding step (S46), the additive is sprayed on the web W (defibrated material) deposited on the mesh belt 122 using the herbicide adding unit 500 and added to the web W (defibrated material). An agent is included.

(Image formation process)
In the image forming step (S 47), ink is ejected to the web W deposited on the mesh belt 122 using the inkjet device 130, and an image is formed on the web W. The image formed on the web W includes a pattern, characters, figures, and the like.
Note that the image forming step (S47) can be omitted.

(Heating / pressurizing process)
In the heating / pressurizing step (S48), the web W on which the image is formed is heated / pressurized by the heater roller 140. Further, the surface may be smoothed by the calendar roller 150. Thereby, the weeding sheet Ps containing a herbicide is formed.
In this embodiment, the herbicide addition step (S46) is performed before the image formation step (S47), but the herbicide addition step (S46) may be performed after the image formation step (S47). .

  As described above, according to the present embodiment, the following effects can be obtained.

  Since the herbicide is contained in the herbicidal sheet Ps containing the colored component, the herbicidal effect can be further enhanced.

  DESCRIPTION OF SYMBOLS 1A, 1B, 1C, 1D ... Herbicidal sheet manufacturing apparatus, 10 ... Cutting part, 30 ... Defibration part, 50 ... Cyclone, 60 ... Mixing part, 130 ... Inkjet apparatus, 190 ... Detection part, 200 ... Supply part, 300, 300a ... Manufacturing part, 350 ... Foreign substance separation part, 355 ... 1st accommodating part, 405 ... Valve | bulb, 500 ... Herbicide addition part, 600 ... Molding part.

Claims (9)

A supply unit capable of supplying raw materials including paper;
A cutting part for cutting the raw material into strips;
A defibrating unit for defibrating the strips in the air and producing defibrated cotton;
A colored component addition part for adding a colored component to the defibrated cotton;
A manufacturing unit that processes the defibrated cotton to produce a weeding sheet,
The weeding sheet manufacturing apparatus characterized by the above-mentioned. In the weeding sheet manufacturing apparatus according to claim 1,
The colored component is a colored material obtained by separating the strip from the strip in the step of defibrating the strip, and is configured to return the colored material to the defibrated cotton. A weeding sheet manufacturing apparatus characterized by the above. In the weeding sheet manufacturing apparatus according to claim 1 or 2,
A detection unit for detecting a colored density of the defibrated cotton;
The herbicidal sheet manufacturing apparatus, wherein the colored component addition unit is configured to make the colored density equal to or higher than a predetermined density. In the weeding sheet manufacturing apparatus according to any one of claims 1 to 3,
The weeding sheet is
An apparatus for producing a herbicidal sheet, wherein the light transmittance is less than 10% and the mass is 50 to 500 g / m ² . In the weeding sheet manufacturing apparatus according to any one of claims 1 to 4,
An apparatus for producing a herbicidal sheet, wherein the defibrated cotton is dispersed and deposited on a three-dimensional mold and then a three-dimensional object is obtained by heat treatment. In the weeding sheet manufacturing apparatus according to any one of claims 1 to 5,
The herbicidal sheet manufacturing apparatus, further comprising a herbicide adding unit that contains a herbicide in the herbicidal sheet. In the weeding sheet manufacturing apparatus according to any one of claims 1 to 6,
A weeding sheet manufacturing apparatus comprising an ink jet apparatus capable of forming an image by discharging ink. In the weeding sheet manufacturing apparatus according to claim 7,
The herbicidal sheet manufacturing apparatus, wherein the ink is an organic ink. A supply process capable of supplying raw materials including paper;
A cutting step of cutting the raw material into strips;
A defibrating step of defibrating the strip in the air to produce a defibrated cotton;
A colored component addition step of adding a colored component to the defibrated cotton;
A process for producing a herbicidal sheet by processing the defibrated cotton,
The manufacturing method of the weeding sheet | seat characterized by the above-mentioned.

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