WO2017061339A1 - Dispositif de pulvérisation de matière particulaire, procédé de pulvérisation de matière particulaire, et procédé de production d'un article contenant une matière particulaire - Google Patents

Dispositif de pulvérisation de matière particulaire, procédé de pulvérisation de matière particulaire, et procédé de production d'un article contenant une matière particulaire Download PDF

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Publication number
WO2017061339A1
WO2017061339A1 PCT/JP2016/079143 JP2016079143W WO2017061339A1 WO 2017061339 A1 WO2017061339 A1 WO 2017061339A1 JP 2016079143 W JP2016079143 W JP 2016079143W WO 2017061339 A1 WO2017061339 A1 WO 2017061339A1
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Prior art keywords
granular material
powder
hopper
spraying
total weight
Prior art date
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PCT/JP2016/079143
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English (en)
Japanese (ja)
Inventor
良輔 真鍋
小林　英男
知大 中澤
和俊 大塚
Original Assignee
花王株式会社
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.)
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Publication date
Priority claimed from JP2015230330A external-priority patent/JP2017094294A/ja
Priority claimed from JP2016189207A external-priority patent/JP6688710B2/ja
Application filed by 花王株式会社 filed Critical 花王株式会社
Priority to CN201680057683.1A priority Critical patent/CN108137243B/zh
Publication of WO2017061339A1 publication Critical patent/WO2017061339A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C19/00—Apparatus specially adapted for applying particulate materials to surfaces
    • B05C19/04—Apparatus specially adapted for applying particulate materials to surfaces the particulate material being projected, poured or allowed to flow onto the surface of the work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
    • B65G47/02—Devices for feeding articles or materials to conveyors
    • B65G47/16—Devices for feeding articles or materials to conveyors for feeding materials in bulk
    • B65G47/18—Arrangements or applications of hoppers or chutes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G65/00—Loading or unloading
    • B65G65/30—Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subclass
    • B65G65/34—Emptying devices
    • B65G65/40—Devices for emptying otherwise than from the top

Definitions

  • the present invention relates to a powder particle spraying device and a powder particle spraying method using the same. Moreover, this invention relates to the manufacturing method of granular material containing articles, such as a functional article.
  • Patent Document 1 includes a hopper capable of temporarily storing powder particles therein, and the powder particles discharged from the hopper are continuously conveyed.
  • a screw conveyor for conveying the powder discharged from the hopper in the horizontal direction is disposed below the hopper, and A rotor for conveying the granular material in the vertical direction is disposed below, and a gap adjusting mechanism for discharging the granular material in a state of being aligned in the vertical direction one by one below the rotor Is disclosed.
  • Patent Document 2 includes a supply device that contains a granular material, a carry-out device that receives and conveys the granular material, a splicing means that guides the granular material to the carry-out device without stagnation, and a granular material that is contained.
  • a weighing device that continuously measures the total weight of the supply device, and an unloading capability of the unloading device so that the amount of decrease ⁇ B per unit time in the supply device matches the desired unloading amount ⁇ B1 per unit time from the measured value of the weighing device
  • a powder and granular constant supply carry-out device provided with a control device for controlling.
  • Patent Document 3 discloses a hopper, a rotary feeder that is disposed in the hopper and rotationally drives the powder material in the hopper to drop downward, and a belt that receives and conveys the powder material falling from the hopper.
  • a feeder, a conveyance amount adjuster that adjusts the conveyance amount of the powder material that is disposed above the belt feeder and that passes through the gap, and a powder material that is conveyed to the downstream end of the belt feeder There is described a powder spraying device comprising a scraping rotor for scraping and spraying the powder material downward by rotating it while being in contact with it.
  • Patent Document 4 discloses a method in which powder particles are dispersed on a continuously conveyed substrate, and the powder particles are continuously cut out from a supply unit that temporarily stores the powder particles with a screw feeder and cut out. Drop the granule and receive it at the vibration conveyance unit, convey it while dispersing the granular material by the vibration of the vibration body provided in the vibration conveyance unit, and continuously spread the granular material on the base material from the spray port of the vibration conveyance unit A method has been proposed. In this method, the supply unit, the screw feeder, and the total mass of the powder particles inside these are continuously weighed, and the screw control unit reduces the amount of powder particles per unit time based on the plurality of measured values.
  • the screw controller controls the screw rotation speed of the screw feeder so that the calculated reduction amount matches the target discharge amount per unit time. Further, when the continuously weighed value falls below the target lower limit amount of the total mass of the supply unit, the screw feeder, and the powder particles inside thereof, until the powder body supply amount control unit reaches the target upper limit amount. Supply control of the powder particles to the supply unit.
  • a hopper may be used when a granular material is quantitatively sprayed on an object to be spread (a substrate that is continuously conveyed).
  • the hopper has an upper opening at the upper end through which powder particles can be charged from above to the inside, and a discharge port at the lower end from which the charged particles can be discharged downward. It has an inner surface with a narrow inner diameter.
  • Patent Document 5 when supplying a granular material using a hopper to a quantitative feeder device that quantitatively distributes the granular material to an object to be dispersed, the granular material is caused by its weight pressure.
  • Patent Document 6 when the granular granule is additionally charged from the upper opening of the hopper in a state where the amount of the granular granule temporarily stored in the hopper is small, the drop height of the granular granule is reduced.
  • the granular granule that has been put in the hopper is received and dispersed toward the inclined inner surface of the hopper and dropped. It is described that a dispersion plate is disposed.
  • Patent Document 7 even if a powder particle whose particle size has been adjusted is put into the hopper, a deviation in the particle size composition occurs with time in the hopper, resulting in a bias in the quality of products such as ceramic tiles.
  • the upper opening of the hopper is provided with a baffle means for preventing the granular material charged from above from becoming convex at the center in the hopper.
  • JP-A-6-92433 Japanese Patent Laid-Open No. 11-153473 JP 2007-98285 A JP 2013-139337 A JP 2014-144781 A JP 2003-63589 A JP 2001-206552 A
  • the present invention (the first invention of the apparatus) includes a storage unit capable of temporarily storing powder particles therein, a discharge port for discharging the powder particles in the storage unit, and the storage unit and the discharge port.
  • a hopper provided with a moving path for powder particles connecting between them, and a gap with respect to the discharge port, and the powder particles discharged from the discharge port are conveyed in a predetermined direction and continuously conveyed.
  • the discharge port has a shape in which the length in the direction orthogonal to the conveyance direction of the granular material by the conveyance means is longer than the length in the conveyance direction.
  • the moving path has a maximum width in the transport direction that is not less than 2 times and less than 5 times the maximum particle diameter of the granular material, and the length in the direction in which the granular material is discharged has a maximum particle diameter of the granular material. More than 1 times.
  • the said clearance gap is a granular material spreading
  • diffusion apparatus which is 1 time or more of the largest particle diameter of the said granular material.
  • One embodiment of the granular material spraying device of the present invention is a weighing device that continuously measures the total weight of the hopper and the granular material stored in the hopper, The amount of change per unit time of the total weight is measured, and the amount of change per unit time of the powder particles sprayed by the transport means is matched with the target amount of application per unit time. Independent of this control, if the total weight falls below a threshold value, the powder particles in the hopper until the total weight reaches the initial set weight. Control means for performing control to replenish the body.
  • control means is configured such that while the granular material is being replenished to the hopper, The control of the transport capability is suspended, and the transport capability of the transport means during the control suspension is held at the transport capability immediately before the control suspension.
  • this invention (1st invention of a method) spreads the said granular material on the base material continuously conveyed using the granular material dispersion
  • the powder discharged from the hopper is transported in one predetermined direction by the transport means and sprayed.
  • a process is provided.
  • the total weight of the hopper and the granular material stored in the hopper is continuously weighed, and when the total weight falls below a threshold, the powder is placed in the hopper until the total weight reaches the initial set weight.
  • a powder and particle replenishment operation is performed to replenish the particles. Independently of the powder and granule replenishment operation, the amount of change per unit time of the total weight is measured, and the transfer capability of the transfer means is controlled according to the change amount, thereby being dispersed by the transfer means.
  • the carrying capacity control operation is performed so that the spraying amount per unit time of the granular material coincides with the target spraying amount per unit time. While the powder and granule replenishment operation is being performed, the transfer capability control operation is paused, and the transfer capability of the transfer means is maintained at the transfer capability immediately before the pause of the transfer capability control operation.
  • the present invention provides a powder-containing article comprising spraying the powder on a continuously conveyed substrate by the powder spraying method of the present invention (first invention of the method). It is a manufacturing method.
  • this invention manufactures the articles
  • the total weight of the hopper and the granular material stored in the hopper is continuously weighed, and when the total weight falls below a threshold, the powder is placed in the hopper until the total weight reaches the initial set weight. A powder and particle replenishment operation is performed to replenish the particles.
  • the amount of change per unit time of the total weight is measured, and the transfer capability of the transfer means is controlled according to the change amount, thereby being dispersed by the transfer means.
  • the carrying capacity control operation is performed so that the spraying amount per unit time of the granular material coincides with the target spraying amount per unit time. While the powder and granule replenishment operation is being performed, the transfer capability control operation is paused, and the transfer capability of the transfer means is maintained at the transfer capability immediately before the pause of the transfer capability control operation.
  • this invention is a functional article including the process of sprinkling a water-absorbing polymer or electrolyte as said powder body on a base material by the dispersion method of the powder body of said this invention (1st invention of a method). It is a manufacturing method.
  • the present inventors also have a granular material on the granular material deposit in a state where the granular material deposit is formed in a hopper having an inner surface whose inner diameter becomes narrower from the upper opening toward the discharge port at the lower end. Paying attention to the influence that the supply of the granular material to the granular material deposit has on the discharge amount of the granular material from the discharge port, when discharging the granular material from the discharge port, As a result of various investigations to solve the problem of providing a method of spraying powder particles that can be quantitatively sprayed on the material to be sprayed with high spray accuracy, mainly from the viewpoint of eliminating such effects, Supply of the granular material so that the “pile of granular material” formed by supplying the granular material on the body deposit is in an appropriate position in relation to the outlet and the inclined inner surface of the hopper The knowledge that it is effective to control the position was obtained.
  • This invention (2nd invention of a method) was made
  • the hopper has a storage unit capable of temporarily storing the granular material supplied from the supply unit, the storage unit as an inner surface defining a storage space for the granular material, with respect to the vertical direction It has an inclined surface that inclines.
  • the granular material is supplied from the supply unit onto the granular particle deposit, and the pile of the granular material is collected. It has the granular material discharge
  • the granular particles from the supply unit so that the piles of the granular material on the granular material deposit do not overlap with the extended region of the discharge port and do not contact the inclined surface. Control the body supply.
  • this invention has the process of spraying the said granular material on the base material as said to-be-dispersed object using the dispersion method of the granular material of said this invention (2nd invention of a method). It is a manufacturing method of a sheet.
  • the present invention (second invention of the apparatus) includes a powder supply unit, and a hopper that is arranged below the supply unit and discharges the powder supplied from the supply unit from a discharge port at a lower end. It is the provided powder particle distribution device.
  • the hopper has a storage unit capable of temporarily storing the granular material supplied from the supply unit, the storage unit as an inner surface defining a storage space for the granular material, with respect to the vertical direction It has an inclined surface that inclines. In a state where the granular material is temporarily stored in the storage unit and the granular material deposit is formed, the granular material is supplied from the supply unit onto the granular particle deposit, and the pile of the granular material is collected.
  • the pile of the granular material on the granular material deposit does not overlap the extended region of the discharge port and the inclined surface. A granular material is supplied from this supply part so that it may not contact.
  • FIG. 1 is a side view schematically showing an embodiment of the granular material spraying apparatus of the present invention (first invention).
  • FIG. 2 is a front view schematically showing a state where the granular material spraying apparatus shown in FIG. 1 is viewed from the downstream side in the conveying direction of the granular material by the conveying means.
  • FIG. 3 is a perspective view of a hopper in the granular material spraying device shown in FIG. 1.
  • FIG. 4 is a side view schematically showing a discharge port and the vicinity thereof in the powder particle distribution device shown in FIG. 1.
  • 5 (a) and 5 (b) are side views schematically showing the main part (conveying means) of another embodiment of the powder particle distribution device of the present invention (first invention), respectively.
  • 6 (a) and 6 (b) are plan views schematically showing the discharge port according to the powder particle disperser of the present invention (first invention), respectively.
  • FIG. 7 is a side view which shows typically another one Embodiment of the granular material dispersion
  • FIG. 8 is a front view schematically showing a state where the granular material spraying apparatus shown in FIG. 7 is viewed from the downstream side in the conveying direction of the granular material by the conveying means.
  • 9 (a) and 9 (b) show a method for calculating the amount of change per unit time of the total weight based on the measured value of the total weight of the hopper and the granular material stored in the hopper, respectively. It is a figure explaining.
  • FIG. 8 is a side view schematically showing a state where the granular material spraying apparatus shown in FIG. 7 is viewed from the downstream side in the conveying direction of the granular material by the conveying means.
  • 9 (a) and 9 (b) show a method for calculating the amount of change per unit time of the total weight based on the measured value of the total weight of the hopper and
  • FIG. 11 is a side view which shows typically one Embodiment of the granular material spraying apparatus which can be used for the spraying method of the granular material of this invention (2nd invention).
  • FIG. 12 is a perspective view of a hopper in the granular material spraying device shown in FIG. 11.
  • FIG. 13 is an explanatory diagram of a main part of a powder particle dispersion method using the powder particle dispersion device shown in FIG. 23, which is an embodiment of the powder particle dispersion method of the present invention (second invention). is there.
  • FIG. 14 is a side view schematically showing the discharge port and the vicinity thereof in the granular material spraying device shown in FIG. 11.
  • FIG. 15 is a perspective view which shows typically the principal part (supply part and hopper) of other embodiment of the granular material dispersion
  • spreading apparatus which can be used for the dispersion method of the granular material of this invention (2nd invention). .
  • FIG. 16 is a graph which shows the dispersion
  • FIG. 17 is a graph which shows the dispersion
  • FIG. 18 is a graph which shows the dispersion
  • FIG. 19 is a graph which shows the dispersion
  • FIG. 20 is a graph showing the quantification of spraying when powder particles are sprayed using the powder particle spraying device of Example 5 within the scope of the present invention (first invention).
  • FIG. 21 is a graph showing the quantification of spraying when powder particles are sprayed using the powder particle spraying device of Comparative Example 1 outside the scope of the present invention (first invention).
  • FIG. 22 is a graph showing the quantification of spraying when the powder is sprayed using the powder spraying apparatus of Comparative Example 2 outside the scope of the present invention (first invention).
  • FIG. 23 is a graph showing the change over time in the measured spraying amount in the spraying of the granular material performed in Example A1 within the scope of the present invention (first invention).
  • FIG. 24 is a graph showing the change over time of the measured spraying amount in the powder particle spraying performed in Comparative Example A1 outside the scope of the present invention (first invention).
  • FIG. 25 is a graph which shows the dispersion
  • the powder and particle distribution device described in Patent Document 1 aligns a large number of powder particles in the vertical direction immediately before the powder particles are sprayed on a continuously conveyed base material, and starts from the row of the powder particles.
  • a spraying mechanism can be applied only when the particles are spherical and have a small particle size distribution.
  • a non-spherical granular material or a granular material having a wide particle size distribution is dispersed using the granular material dispersing device described in Patent Document 1, it is difficult to align the granular material in the vertical direction. There is a possibility that clogging of granules occurs, and the powders cannot be dispersed with good quantitativeness.
  • the problem of the present invention (one of the problems of the first invention) is that the powder particles can be uniformly distributed in the width direction of the substrate with good quantitativeness on the continuously conveyed substrate. It relates to providing an apparatus.
  • the amount of the dropping is different depending on the amount of the granular material stored in the hopper. It is empirically known that there is. Therefore, in order to keep the amount of powder falling constantly, the mass of the powder in the hopper is constantly monitored, and the mass of the powder in the hopper is kept constant so that the mass of the powder in the hopper is constant. What is necessary is just to supply a granular material continuously. However, it may not be easy to continuously measure the mass of the granular material in the hopper while continuously supplying the granular material into the hopper due to limitations of the mass measuring device. In particular, when the fall amount is small, in order to control the fall amount with high accuracy, it is necessary to strictly manage the mass of the granular material stored in the hopper and to strictly manage the fall amount. is there.
  • an object of the present invention (another object of the first invention) relates to providing a method and an apparatus for making the amount of powder particles stored in a supply device such as a hopper constant.
  • this technique can reduce the impact of the body falling directly, this technology cannot keep the upper surface of the particulate deposit in the hopper uniform, so the powder flow in the hopper is uneven. This is not effective in preventing fluctuations in the discharge amount of the granular material.
  • this method may cause classification and consolidation in a hopper.
  • the subject of the present invention (the subject of the second invention) relates to providing a method for spraying powder particles that can be sprayed quantitatively on the material to be sprayed with high spray accuracy.
  • FIG. 1 to 4 show a granular material spraying apparatus 1 which is an embodiment of the granular material spraying apparatus of the present invention (first invention).
  • the powder particle distribution device 1 conveys the powder P discharged from the hopper 2 in a predetermined direction indicated by a symbol X in the figure, and the hopper 2 capable of temporarily storing the powder P inside.
  • the base material 100 can be continuously transported by a known transport device such as a transport roll as shown in FIG. 1 or a belt conveyor.
  • the base material 100 and its conveying apparatus do not constitute the powder particle distribution apparatus 1.
  • the hopper 2 is fixed to a position above the conveying means 3 (receiving means 30) fixed on the base plate 4 by a support member 5 erected on the base plate 4.
  • the hopper 2 has a trapezoidal shape in which the upper base is longer than the lower base when viewed from the side as shown in FIG. 1, that is, when viewed from the direction orthogonal to the conveying direction X of the powder P by the conveying means 3. It includes a portion 20 and a rectangular parallelepiped discharge portion 21 connected to the lower end of the storage portion 20 and having a rectangular shape in the side view.
  • the storage unit 20 has a space in which the granular material P can be stored, and the granular material P can be temporarily stored in the internal space. The granular material P is supplied from the upper opening of the storage unit 20 to the internal space of the storage unit 20 by the powder supply device 90.
  • the discharge part 21 has the movement path 22 of the granular material P inside, and the discharge port 23 of the granular material P is formed in the lower end (end part on the opposite side to the storage part 20 side) of the discharge part 21.
  • the internal space of the storage unit 20 and the discharge port 23 communicate with each other via the movement path 22.
  • the inner wall 20 i that defines the inner space of the storage unit 20 is an inclined inner wall that partially extends in a direction that intersects both the horizontal and vertical directions.
  • the remaining portion of the inner wall 20i is a vertical wall extending in the vertical direction perpendicular to the horizontal direction. More specifically, as shown in FIG.
  • the internal space of the storage unit 20 that stores the granular material P is defined by four inner walls 20 i and 20 is, and each inner wall 20 i and 20 is Each of the four inner walls 20i, 20is, which is connected to the inner wall 21i that defines the moving path 22 of the granular material P, is located on the most downstream side or the most upstream side in the transport direction X. All of the remaining three inner walls 20i except for the inner wall 20is are vertical walls extending in the vertical direction.
  • the length of the upper base of the storage unit 20 is longer than the length of the discharge port 23 and is perpendicular to the transport direction X.
  • the length of the upper base of the storage unit 20 is the same as the length of the discharge port 23.
  • the conveying unit 3 includes a receiving unit 30 that receives the powder P discharged from the hopper 2 and a vibration generating unit 31 that vibrates the receiving unit 30.
  • the conveying means 3 is disposed with a gap G with respect to the discharge port 23 located at the lower end of the hopper 2, and more specifically, the upper surface 30 a of the receiving means 30, that is, the powder discharged from the hopper 2. It arrange
  • the vibration generating means 31 is fixed to the lower surface 30 b of the receiving means 30.
  • the receiving means 30 is used for receiving and transporting the granular material P (in contact with the granular material P) in the vicinity of the portion located below the hopper 2 (discharge port 23) and the vicinity thereof.
  • This part is basically a powder non-contact portion that does not come into contact with the powder P, and the vibration generating means 31 is fixed to the lower surface 30b of the powder non-contact portion of the receiving means 30.
  • the conveying means 3 is configured to be able to convey the granular material P on the receiving means 30 in a predetermined direction by operating the vibration generating means 31 to vibrate the receiving means 30.
  • the powder particle dispersal device 1 includes a vibration control unit (not shown) that controls the voltage and frequency applied to the vibration generating unit 31, and the vibration control unit controls the frequency and amplitude of the receiving unit 30.
  • the vibration control unit controls the voltage and frequency applied to the vibration generating unit 31, and the vibration control unit controls the frequency and amplitude of the receiving unit 30.
  • the conveying state of the granular material P on the receiving means 30 is controlled. That is, under the control of the vibration control unit, when the vibration generating unit 31 is not in operation, the receiving unit 30 is not vibrating, and thus the conveyance of the granular material P on the receiving unit 30 is stopped or suppressed.
  • the vibration generating means 31 When the vibration generating means 31 is operated from such a state, when the receiving means 30 starts to vibrate, the stop or suppression of the powder P on the receiving means 30 is released. 1 and finally, as shown in FIGS. 1 and 2, the base material 100 is dropped from the front end of the receiving means 30 in the conveying direction X and continuously conveyed below the receiving means 30. Scattered on top.
  • the receiving means 30 is preferably a flat plate from the viewpoint of appropriately transmitting the vibration generated by the vibration generating means 31 to the powder P on the receiving means 30, and more specifically, FIG.
  • a flat plate member as shown is preferred.
  • the material of the receiving means 30 which consists of such a flat plate member is not restrict
  • a guide member may be provided on the side edge portion of the receiving means 30 along the conveyance direction X so as to stand upward from the upper surface 30a (on the hopper 2 side).
  • the vibration generating unit 31 may be any unit capable of generating a vibration component capable of transporting the granular material P on the receiving unit 30 in a desired one direction.
  • a piezoelectric element such as a piezoelectric ceramic, a vibration feeder, etc.
  • a well-known vibration generating means is mentioned.
  • the vibration feeder is preferably used as the vibration generating means 31.
  • the vibration frequency of the vibration generating means 31 is not particularly limited, but is preferably 50 Hz or more, more preferably 100 Hz or more, and preferably 500 Hz, from the viewpoints of the transportability of the powder and the uniformity and quantitativeness of the dispersion.
  • it is more preferably 300 Hz or less, more specifically, preferably 50 to 500 Hz, and more preferably 100 to 300 Hz.
  • distribution apparatus 1 of this embodiment makes the granular material P the width direction (the direction orthogonal to the conveyance direction of the base material 100 in the base material 100 with respect to the base material 100 conveyed continuously.
  • the main problem is to disperse in the direction indicated by Y with excellent uniformity and good quantitativeness.
  • the following (1) to (4) are adopted.
  • the discharge port 23 is a length in a direction (width direction Y) perpendicular to the conveyance direction X of the granular material P by the conveying means 3 in plan view (sectional view in a direction orthogonal to the discharge direction of the granular material P).
  • the length W (see FIG. 3) is longer than the length D (see FIGS.
  • the maximum width D in the transport direction X is not less than 2 times and less than 5 times the maximum particle diameter r (see FIG. 4) of the granular material P (2 ⁇ D / r ⁇ 5).
  • the moving path 22 has a length H in the discharge direction of the granular material P (see FIGS. 2 and 3) that is one or more times the maximum particle diameter r of the granular material P (r ⁇ H).
  • the gap G (see FIGS. 1, 2, and 4) is not less than 1 times the maximum particle diameter r of the granular material P (r ⁇ G).
  • the maximum particle diameter r of the granular material P can be measured by a known method. Specifically, for example, a dry sieving method (JIS Z8815-1994), a dynamic light scattering method, a laser diffraction method, a centrifugal sedimentation method, Gravity sedimentation method, image imaging method, FFF (field flow fractionation) method, electrostatic detector method, Coulter method and the like can be mentioned. Among these, it is preferable from the viewpoint of reproducibility and accuracy to employ the maximum particle diameter r measured by the laser diffraction method or the Coulter method.
  • a dry sieving method JIS Z8815-1994
  • a dynamic light scattering method e.g., a laser diffraction method, a centrifugal sedimentation method, Gravity sedimentation method, image imaging method, FFF (field flow fractionation) method, electrostatic detector method, Coulter method and the like.
  • FFF field flow fractionation
  • the maximum particle diameter r of the granular material is measured using a laser diffraction method. It is preferable.
  • the plan view shape of the discharge port 23 located at the lower end of the discharge unit 21 has a considerable influence on the flow of the powder P in the moving path 22 in the discharge unit 21.
  • the shape of the discharge port 23 in plan view is a rectangular shape or a shape equivalent thereto, that is, a “long shape in one direction”, as compared with a perfect circle shape or a square shape.
  • the flow of the granular material P in the moving path 22 is easily made steady, which leads to the solution of the above problem.
  • the above (1) is adopted based on such knowledge, and the discharge port 23 has a size relationship of “length W in the width direction Y> length D in the transport direction X”.
  • the ratio of the length W to the length D is preferably 2 or more, more preferably 5 or more, and preferably 1000 or less, more preferably 100 or less, more specifically preferably 2 as W / D. To 1000, more preferably 5 to 100.
  • the length W means the maximum length of the discharge port 23 in the width direction Y.
  • the moving path 22 may be clogged, and the moving path If the maximum width D of 22 is not less than 5 times the maximum particle diameter r of the granular material P, it is difficult to make the flow of the granular material P in the moving path 22 steady, and the granular material with respect to the substrate 100 P cannot be uniformly distributed in the width direction Y with good quantitativeness.
  • the maximum width D of the moving path 22 is preferably 3 times or more and less than 4 times based on the maximum particle diameter r of the granular material P.
  • the length H of the moving path 22 is less than 1 times the maximum particle diameter r of the granular material P, there is a possibility that the flow of the granular material P in the moving path 22 may not be made steady.
  • the granular material P cannot be uniformly spread on the material 100 in the width direction Y with good quantitativeness.
  • the length H of the moving path 22 is preferably 5 times or more, more preferably 10 times or more, based on the maximum particle diameter r of the powder P.
  • the upper limit value of the length H of the moving path 22 is not limited from the viewpoint of steady flow of the flow of the granular material P, but can be determined from the viewpoint of the appropriate size of the apparatus.
  • the maximum particle diameter r of the body P is preferably 100 times or less.
  • the gap G is preferably 1.5 times or more, more preferably 2 times or more, and preferably 10 times or less, more preferably 5 times or less, more specifically, based on the maximum particle diameter r of the granular material P. Is preferably 1.5 times or more and 10 times or less, more preferably 2 times or more and 5 times or less.
  • the discharge speed of the granular material P is easily kept constant.
  • the conveying means 3 includes the vibration generating means 31
  • the discharge amount of the granular material P can be controlled by the amplitude or frequency of the vibration generating means 31, but the gap G is 10 times or less of the maximum particle diameter r. If it exists, since the discharge amount of the granular material P discharged
  • the powder P in the hopper 2 is further provided.
  • the angle with respect to the horizontal direction of the inner surface which contacts with is the repose angle (theta) (refer FIG. 4) of the granular material P or more.
  • the side walls of the hopper 2 are vertical walls that extend in the vertical direction perpendicular to the horizontal direction except for the inclined side walls 20s (see FIGS. 1 and 2) of the storage unit 20, and the inner surfaces of these vertical walls.
  • the angle with respect to the horizontal direction is 90 ° and is larger than the angle of repose ⁇ of the granular material P, and the angle with respect to the horizontal direction of the inner surface of the inclined side wall 20s of the storage unit 20 is the repose angle ⁇ of the granular material P. It has been made the same or larger.
  • the ratio between ⁇ 1 and the angle of repose ⁇ of the granular material is preferably ⁇ 1 / ⁇ , preferably 1.2 or more, and more preferably Is 1.5 or more.
  • ⁇ 1 is preferably 1.2 ⁇ or more and 90 ° or less, more preferably 1.5 ⁇ or more and 90 ° or less.
  • An intersection 23A between a virtual straight line VL extending vertically through the center and the conveying means 3 (the upper surface 30a of the receiving means 30) is conveyed by the conveying means 3 in relation to the gap G and the angle of repose ⁇ of the powder P. It is preferably located in the range of G / tan ⁇ to 15 G from the downstream end 3DE in the direction X.
  • the separation distance L between the downstream end 3DE of the transport unit 3 (receiving unit 30) and the intersection 23A is preferably G / tan ⁇ or more and 15G or less.
  • the separation distance L is shorter, it is preferable in terms of the dispersion accuracy of the granular material P.
  • the separation distance L is too short, the granular material P discharged from the discharge port 23 does not come into contact with the conveying means 3.
  • the angle of repose of the granular material P may collapse and be directly sprayed on the base material 100 positioned therebelow, which may hinder the stable improvement of the spraying accuracy.
  • the separation distance L is more preferably G / tan ⁇ or more and 10 G or less.
  • the powder P water-absorbing polymer particles, sugar, activated carbon, wheat flour, PE pellets, PP pellets, PET chips, PC chips, PE granules, PBA beads, etc., organic powders, metal powders, chlorides, etc. Examples thereof include inorganic particles such as sodium, potassium chloride, calcium chloride, magnesium chloride, glass and lime.
  • the shape of the granular material P is not particularly limited, and examples thereof include a spherical shape, a meteorite shape, an elliptical shape, an elliptical column, a needle shape, and a cubic shape.
  • the powder particle P is uniformly distributed in the width direction Y of the base material 100 in the width direction Y even when the particle particle P has a true spherical shape, even if it has a shape other than the true spherical shape. Can do.
  • the thermal conductivity as the inner wall of the hopper 2 is used. It is preferable to use a relatively low material. It is preferable to use a thermal conductivity of 25 W / m ⁇ K or less at the temperature at the time when the powder particles are dispersed. It is because it becomes easy to prevent dew condensation in the hopper 2 by using a material with low thermal conductivity as the inner wall of the hopper 2.
  • the material of the inner wall of the hopper 2 it is also possible to select a material having a lower thermal conductivity than the outer wall that is located on the opposite side of the inner wall and forms the outer surface of the hopper 2. .
  • a material having a relatively low thermal conductivity is employed in the hopper 2, particularly when a water-absorbing polymer is used as the granular material, the water-absorbing polymer expands due to water absorption or has a stickiness. Since the inconvenience of being expressed and sticking to each other is less likely to occur, it is preferable from the viewpoint of more surely achieving the effects of the present invention (first invention) described later.
  • the material of the inner wall 20 of the hopper 2 is preferably one that is unlikely to cause corrosion due to the granular material, and specifically, for example, a ceramic material such as stainless steel, glass, zirconia, silicon nitride, etc. Etc. Further, for example, a non-conductive material such as a resin powder, and a material that can generate static electricity between the particles P or between the particles P and the inner walls 20i, 20is, 21i is used as the particles P.
  • a conductive material When using as, as the inner side walls 20i, 20is, 21i of the hopper 2, it is desirable to use a conductive material. This is because static electricity can be prevented by using a conductive material as the inner wall of the hopper. Examples of such materials include metal materials such as stainless steel, aluminum, and copper, conductive ceramics, and conductive materials such as conductive resins.
  • the inner walls 20i, 20is, and 21i of the hopper 2 have a surface property that allows the granular material P to smoothly flow out to the discharge port 23. Therefore, it is preferable that the inner wall of the hopper 2 has a smooth surface and a low coefficient of dynamic friction.
  • the inclined inner side wall 20is extending in a direction intersecting both the horizontal direction and the vertical direction among the inner side walls has such a property.
  • the surface roughness (Ra) of the inner walls 20i, 20is, and 21i of the hopper 2 is a value measured according to JIS B 0601-2001, and is preferably 10 ⁇ m or less, particularly 1 ⁇ m or less.
  • the substrate 100 is preferably a sheet-like substrate, but is not limited to a sheet-like substrate.
  • the sheet-like base material include non-woven fabrics, resin films, woven fabrics, knitted fabrics, papers, and the like produced by various manufacturing methods, and laminates obtained by laminating a plurality of the same or different materials.
  • the base material 100 a material obtained by laminating a functional material or composition on a sheet-like material may be used.
  • the base material 100 can be formed by applying a heat generating composition containing an oxidizable metal and water on a sheet-like material such as a film or a nonwoven fabric.
  • a heat generating composition containing an oxidizable metal and water on a sheet-like material such as a film or a nonwoven fabric.
  • “using the powder particle distribution device of the present invention (first invention) the powder particles are distributed on a sheet-like substrate that is continuously conveyed.
  • the “dispersing method” when manufacturing a heat-generating sheet containing oxidizable metal particles and water, a superabsorbent polymer particle, metal on a sheet-like substrate made of a fiber sheet continuously conveyed A method of forming a heat generating composition by spraying one or two or more particles, solid electrolytes and the like is mentioned. By spraying powders such as an electrolyte such as sodium chloride and a water-absorbing polymer on the layer of the exothermic composition of the base material 100 using the powder particle spraying device of the present invention (first invention), these powders are dispersed. A heating element in which particles are arranged in a uniform state can be obtained.
  • a heating element With such a heating element, it can be expected that excellent heat generation characteristics with less unevenness in heat generation can be obtained.
  • diffusion method of this invention (1st invention) are preferable in the manufacturing method of a heat generating body, it is applicable also to the manufacturing method of another functional sheet.
  • a water-absorbent sheet can be produced by spraying particles of a highly water-absorbent polymer on a sheet-like substrate made of a continuously conveyed fiber sheet.
  • the base material 100 contains the composition containing a water
  • dispersed on this base material 100 is difficult to move on this base material 100 immediately after the dispersion
  • uniform powder particles are sprayed from the discharge port 23. From this point of view, the granular material spraying device of the present invention (first invention) is very useful.
  • FIG. 5 shows a main part of another embodiment of the granular material spraying apparatus of the present invention (first invention).
  • first invention constituent parts different from those of the granular material spraying apparatus 1 will be mainly described, and the same constituent parts will be denoted by the same reference numerals and description thereof will be omitted.
  • the description of the powder and particle distribution device 1 is applied as appropriate.
  • the conveying means 3A in the granular material spraying apparatus 1A shown in FIG. 5A is disposed below the discharge port 23 of the hopper 2 and includes a cylindrical conveying roll 32 that rotates around the rotation axis.
  • the granular material P discharged from the discharge port 23 is received by the outer peripheral surface of the transport roll 32, and the substrate roll (not shown) located below the transport roll 32 is rotated from the receiving position by the rotation of the transport roll 32. And then sprayed onto the substrate.
  • 5 (b) is configured to include an endless conveying belt 35 spanned between the drive roll 33 and the driven roll 34, and is discharged from the discharge port 23.
  • the transported powder P is received by the conveyor belt 35, and is moved toward the substrate (not shown) located below the conveyor belt 35 by the movement of the conveyor belt 35 from the receiving position and spread on the substrate. It is made to do.
  • the plan view shape of the discharge port 23 in the discharge portion 22 of the hopper 2 is not limited to a rectangular shape as shown in FIG. 3, and can be arbitrarily set to a circular shape, an elliptical shape, a polygonal shape, etc., for example, FIG. A long oval shape as shown in a), or a polygonal shape of a pentagon or more long in one direction as shown in FIG.
  • the shape of the discharge port 23 in plan view is such that the length in the width direction Y perpendicular to the transport direction X of the powder P by the transport means 3 is longer than the length in the transport direction X.
  • FIGS. 3 and 6 “A shape elongated in one direction” is preferable, and the discharge port 23 shown in FIGS. 3 and 6 is a specific example thereof.
  • the discharge port 23 may be divided into a plurality of sections in the width direction Y, and the discharge unit 21 may have a plurality of movement paths 22 corresponding to the plurality of sections in a one-to-one manner.
  • the above (2) to (4) are adopted in each of the movement paths 22 (discharge ports 23).
  • the granular material spraying apparatus 1C shown in FIG. 7 conveys the granular material discharged from the hopper in a predetermined direction by the conveying means and spreads it on the object to be dispersed, whereby an article including the granular material is obtained. It is used suitably for manufacture of the granular material containing article to manufacture.
  • diffusion apparatuses are the predetermined
  • the hopper 2 is located above the conveying means 3 (receiving means 30).
  • the base material 100 can be continuously transported by a known transport device such as a transport roll as shown in FIG. 7 or a belt conveyor.
  • the base material 100 and its conveying apparatus do not constitute the powder particle dispersion apparatus 1C.
  • the conveying means 3 is configured to be able to convey the granular material P on the receiving means 30 in a predetermined direction by operating the vibration generating means 31 to vibrate the receiving means 30.
  • 1 C of granular material spreading apparatuses are provided with the control part 40 which controls the voltage and frequency which are applied to the vibration generation means 31, and this control part 40 controls the frequency and / or amplitude of the receiving means 30, and extends.
  • the conveying state of the powder P on the receiving means 30 is controlled.
  • the vibration generating means 31 when the vibration generating means 31 is not in operation, the receiving means 30 is not vibrating, so that the conveyance of the granular material P on the receiving means 30 is stopped or suppressed.
  • the receiving means 30 starts to vibrate, so that the stop or suppression of the powder P on the receiving means 30 is released, and the powder P is shown in the figure. It is transported in the direction indicated by the symbol X (conveying direction), and finally falls from the end of the receiving means 30 and continuously transported below the receiving means 30 as shown in FIGS. It is spread on the material 100.
  • the receiving means 30 is preferably a flat plate, and more specifically, FIG. A flat plate member as shown in FIG. Further, in order to prevent the particles P discharged from the discharge port 23 from being distributed uniformly from the front end portion with respect to the conveying direction X of the receiving means 30, in order to prevent scattering from other than the conveying direction X, the receiving means Guides may be provided on the 30 side surfaces.
  • the material of the receiving means 30 which consists of such a flat plate member is not restrict
  • the weighing device 50 is attached to the hopper 2.
  • a device capable of continuously weighing the total weight of the hopper 2 and the powder P stored in the hopper 2 is used. “Continuous weighing” means that the sampling time of the weighing data is 1 second or less.
  • the weighing data of the hopper 2 weighed by the weighing device 50 and the total weight of the powder P stored in the hopper 2 are transmitted to the control unit 40 described above every time the data is acquired. It has become.
  • a specific example of the weighing device 50 is an electric meter, and specifically, a load cell meter, an electromagnetic meter, a tuning fork meter, or the like can be used.
  • control unit 40 has a function of controlling the frequency and / or amplitude of the receiving unit 30. Have. Further, the control unit 40 can receive the weighing data transmitted from the weighing device 50. Further, the control unit 40 is connected to a powder supply device 90 installed on the storage unit 20 of the hopper 2 and has a function of controlling the supply of the granular material P into the storage unit 20.
  • a powder supply device 90 installed on the storage unit 20 of the hopper 2 and has a function of controlling the supply of the granular material P into the storage unit 20.
  • the control unit 40 for example, a computer in which control / processing software is installed can be used.
  • the granular material P to be dispersed using the granular material spraying device 1C for example, water-absorbing polymer particles, sugar, activated carbon, wheat flour, polyethylene pellets, polypropylene pellets, polyethylene terephthalate chips, polycarbonate chips, polyethylene granules,
  • examples include organic particles such as polybutyl acrylate beads, and inorganic particles such as metal powder, sodium chloride, potassium chloride, calcium chloride, magnesium chloride, glass, and lime.
  • the shape of the granular material P is not particularly limited, and examples thereof include a spherical shape, a meteorite shape, an elliptical shape, an elliptical column, a needle shape, and a cubic shape.
  • the powder particle dispersal device 1C not only when the powder particle P has a true spherical shape, but also with a shape other than the true spherical shape, the longitudinal direction (that is, the conveying direction X) and / or the width of the base material 100. It is possible to spray uniformly in the direction Y with good quantitativeness.
  • a heat generating sheet containing particles of oxidizable metal and water A method of forming a heat-generating composition by spraying particles of superabsorbent polymer, metal particles, solid electrolyte, etc. on a sheet-like base material composed of continuously conveyed fiber sheets. It is done.
  • a heating element can be obtained.
  • the apparatus of this invention (1st invention) and the spraying method of a granular material are preferable in the manufacturing method of a heat generating body, it is applicable also to the manufacturing method of another functional sheet.
  • the powder stored in the hopper 2 When spraying the granular material P onto the sheet-like base material 100 that is continuously conveyed using the granular material spraying device 1C, the powder stored in the hopper 2 through the discharge port 23 in the hopper 2 The particles P are dropped and spread on the receiving means 30 of the conveying means 3. As the granular material P falls, the storage amount of the granular material P in the hopper 2 gradually decreases. The amount of the granular material P in the hopper 2 is continuously measured by the measuring device 50 in the form of the hopper 2 and the total weight of the granular material P stored in the hopper 2. In the following description, for the sake of simplicity, the total weight of the hopper 2 and the powder P stored in the hopper 2 is also referred to as “hopper-containing powder weight”.
  • the hopper-containing powder weight A 1 Prior to continuous weighing of the hopper-containing powder weight A, it is preferable to measure the hopper-containing powder weight A 1 in a fully filled state of the powder P in advance.
  • the weight A P of the powder P dropped from the hopper 2 can be easily calculated from the calculation of A 1 -A by measuring the weight A 1 including the hopper in the fully filled state of the powder P in advance. Can be calculated.
  • the granular material P dropped on the receiving means 30 in the conveying means 3 is dispersed on the base material 100 by a constant amount.
  • the amplitude and frequency of the receiving means 30 are controlled by the vibration generating means 31.
  • the vibration control by the vibration generating means 31 is preferably performed according to the following criteria. That is, the hopper-containing powder weight A is continuously measured, and the change amount ⁇ A per unit time of the hopper-containing powder weight A is calculated. ⁇ A is defined by (A a ⁇ A b ) / t.
  • a a is the weight of the hopper-containing powder and granule at a certain time
  • a b is the weight of the hopper-containing powder and granule after the elapse of time t.
  • ⁇ A is calculated in the control unit 40. Since the weight of the hopper 2 is unchanged, ⁇ A is equal to the rate of decrease in the weight of the granular material P in the hopper 2.
  • the transporting ability of the transporting unit 3 is controlled, and the spraying amount ⁇ S per unit time of the granular material P sprayed on the base material 100 by the transporting unit 3 is set as the per unit time. for conveying capacity control operation to match the target application rate [Delta] S t.
  • conveying capacity control operation for example, when ⁇ A is less than [Delta] S t performs an operation of increasing the application rate [Delta] S to increase the conveying capacity of the conveying means 3. Conversely, .DELTA.A is when more than [Delta] S t performs an operation to reduce the application rate [Delta] S by lowering the conveying capacity of the conveying means 3.
  • the carrying capacity of the carrying means 3 can be changed by controlling the amplitude and / or frequency of vibration of the vibration generating means 31, for example.
  • a known feedback control method such as P control (proportional control), PI control or PID control can be employed.
  • P control proportional control
  • PI control PI control
  • PID control PI control
  • the coefficients in these various control methods can be determined by trial and error.
  • the weight reduction rate ⁇ A of the weight of the hopper-containing powder can be calculated by various methods. For example, the weight of the hopper-containing powder particles is measured every predetermined time t (seconds), and the difference between the measured weight of the hopper-containing powder particles and the weight of the hopper-containing powder particles measured before t (seconds) is calculated. A value obtained by dividing the value by t (seconds) can be defined as a weight reduction rate ⁇ A.
  • the value of t is preferably 1 second or more and 300 seconds or less.
  • the weight of the powder containing hopper is measured every 5 seconds, the difference between the latest measured value and the measured value 5 seconds before is taken, and the difference is 5 seconds. By dividing, the weight reduction rate ⁇ A can be calculated.
  • the weight of the hopper-containing powder particles is measured every predetermined time s (seconds), and is measured before the measured weight of the hopper-containing powder particles and t (seconds) (where s ⁇ t).
  • a value obtained by calculating a difference from the weight of the hopper-containing powder and dividing the value by t (seconds) can be defined as a weight reduction rate ⁇ A.
  • the value of t / s is preferably 1 or more and 3000 or less.
  • it is preferable that the value of s is 0.1 second or more and 10 seconds or less.
  • the value of t is 1 second or more and 300 seconds or less on condition that the value of t is larger than the value of s.
  • the weight of the hopper-containing powder is measured every second, the difference between the latest measured value and the measured value five seconds before is taken, and the difference is calculated in five seconds. By dividing, the weight reduction rate ⁇ A can be calculated.
  • the calculation method of the weight reduction rate ⁇ A shown in FIG. 9A has an advantage that the calculation load in the control unit 40 is smaller than the calculation method of the weight reduction rate ⁇ A shown in FIG.
  • the calculation method of the weight reduction rate ⁇ A shown in FIG. 9B has an advantage that the weight reduction rate ⁇ A can be calculated more precisely than the calculation method of the weight reduction rate ⁇ A shown in FIG.
  • the hopper-containing powder weight A gradually decreases with the passage of time for spraying the powder P.
  • the amount of the granular material P stored in the hopper 2 depends on the amount. It is empirically known that there may be a difference in the amount of fall.
  • the powder weight A 3 in the hopper is preferably 40 mass% or more and 100 mass% of the powder weight A 4 in the hopper in the fully filled state of the powder P.
  • the powder weight A 3 in the hopper is preferably 40% by mass or more and 100% by mass or less, more preferably 80% by mass or more and 100% of the powder weight A 4 in the hopper in the fully filled state of the powder P. It is preferable to spray the granular material P in a state where the mass is maintained at a mass% or less.
  • a value of 40 mass% of the powder weight A 4 in the hopper in the fully filled state of the powder P is set as a threshold, and the powder weight A 3 in the hopper is a threshold 0.4A 4. If the particle weight A 3 in the hopper becomes the initial set weight, that is, the powder weight A 4 in the hopper in the fully filled state of the powder P, the powder P is put in the hopper 2. Replenish powder and granules.
  • the weight actually measured in this embodiment is the hopper-containing powder weight A (that is, the hopper weight A 3 + the hopper weight A 2 ), and the hopper weight A 2 is obtained when the powder P is empty.
  • the above-mentioned replenishment operation sets the value of 40% by mass of the powder weight A 4 in the hopper when the powder P is fully filled as a threshold value. Weighing the included powder weight A continuously, and if the hopper included powder weight A falls below 0.4A 4 + A 2 , which is the threshold for the measured value, the hopper included powder weight A is initially set. It is synonymous with performing the powder replenishment operation which replenishes this granular material in this hopper 2 until it becomes weight.
  • the "Once below 0.4 A 4 + A 2", 0.4 A 4 + A 2 as well as the time that falls below the even time after below 0.4 A 4 + A 2 include.
  • This granular material replenishment operation is performed by issuing an operation command from the control unit 40 to the powder supply device 90 and supplying the granular material P into the hopper 2 by the powder supply device 90.
  • this powder and granule replenishment operation is performed independently of the previously described conveyance capacity control operation. “Independently performed” is not intended to carry out the powder replenishment operation and the conveyance capacity control operation using separate control systems, and uses only one control system to replenish the granules. Performing the operation and the conveyance capacity control operation by parallel processing is also included.
  • the conveyance capacity control operation is suspended while the granular material replenishment operation is performed. While the conveyance capacity control operation is paused, the conveyance capacity of the conveyance means 3 is maintained at the conveyance capacity immediately before the conveyance capacity control operation is suspended. By performing such control, the measured value of the hopper-containing particle weight A becomes unstable, and even during the supply of the powder P into the hopper 2, The amount of application can be stabilized.
  • the conveyance capacity control operation is stopped after completion of the powder replenishment operation, that is, the hopper-containing powder weight A when the hopper-containing powder weight A is the initial set weight and the powder P is fully filled. After reaching 1 , the hopper-containing powder weight A is released when it continuously decreases over a predetermined time, and thereafter, the conveying capacity control operation is resumed.
  • “When the hopper-containing powder weight A continuously decreases over a predetermined time” means, for example, when the measurement of the hopper-containing powder weight A is continuously performed every second, the powder After completion of the replenishment operation, the state where the hopper-containing powder weight A is less than 1 second before is continued 5 times.
  • This processing is performed in the processing unit 40, and as a result of the determination in the processing unit 40, an operation command for the vibration generating unit 31 is issued from the processing unit 40 toward the vibration generating unit 31.
  • the powder particles P can be sprayed quantitatively on the base material 100 continuously conveyed in a predetermined direction.
  • the spray amount of the granular material P when viewed along the transport direction X can be made constant.
  • FIG. 11 shows a schematic configuration of an embodiment of a powder particle spraying apparatus that can be used in the powder particle spraying method of the present invention (second invention).
  • diffusion apparatus 10 shown in FIG. 11 the same code
  • the granular material spraying apparatus 10 shown in FIG. 11 is arranged below the supply part 90 of the granular material P and the supply part 90, and discharges the granular material P supplied from the supply part 90 from the discharge port 2b at the lower end.
  • the hopper 2 to be transported and the granular material P discharged from the hopper 2 are conveyed in the direction indicated by reference numeral X1 in the figure, and the lower part of the conveying granular material P is continuously conveyed in the direction X2 opposite to the direction X1.
  • the supply unit 90 is connected to a supply tank for powder P, not shown, and discharges the powder P supplied from the supply tank from the discharge port at the lower end and supplies the powder P into the hopper 2.
  • the supply unit 90 includes a valve that adjusts the discharge amount of the granular material P, and the supply amount of the granular material P to the hopper 2 can be adjusted by opening and closing the valve.
  • the supply unit 90 has a cylindrical shape, and a lower end portion having a discharge port for the granular material P is inserted into the inside (storage unit 20) from the upper opening 2a of the hopper 2.
  • the hopper 2 is a storage unit 20 that can temporarily store the powder P supplied from the supply unit 90, and a discharge unit that is located below the storage unit 20 and has a discharge port 2b for the powder P at the lower end. 21.
  • the storage unit 20 of the hopper 2 has an inclined surface 20 ⁇ / b> A that is inclined with respect to the vertical direction Z as an inner surface that defines a storage space for the granular material P.
  • the inclined surface 20 ⁇ / b> A is perpendicular to the vertical direction Y, which is orthogonal to both the conveyance direction X ⁇ b> 1 (the conveyance direction X ⁇ b> 2 of the base material 100) and the vertical direction Z of the powder P discharged from the hopper 2. It extends.
  • the storage unit 20 has a trapezoidal shape in which the upper base is longer than the lower base in a cross-sectional view or a side view along the conveying direction X1 of the granular material P.
  • an inner surface that defines the storage space of P as shown in FIG. 12, an inclined surface 20A that is inclined with respect to both the vertical direction Z and the horizontal direction, and an inclined surface facing surface 20B that is opposed to the inclined surface 20A, It has a pair of inner side surfaces 20C, 20C extending in the transport direction X1 and spaced apart in the vertical direction Y.
  • the inclined inner wall is denoted by reference numeral 20is
  • the other inner wall is denoted by reference numeral 20i (see FIGS.
  • a portion corresponding to the inclined inner wall 20is of the first invention is provided. Is indicated by reference numeral 20A, and portions corresponding to the other inner wall 20i of the first invention are indicated by reference numerals 20B and 20C (see FIGS. 11 to 13).
  • the inclined surface 20A is located on the upstream side in the conveying direction X1
  • the inclined surface facing surface 20B is located on the downstream side in the conveying direction X1.
  • the three inner surfaces 20B and 20C other than the inclined surface 20A of the storage unit 20 are all vertical surfaces extending in the vertical direction Z. All of the four inner surfaces 20A, 20B, and 20C of the storage unit 20 are connected to the inner surface 210 that defines the moving path 22 of the granular material P.
  • the storage unit 20 has an inner surface whose inner diameter becomes narrower from the top to the bottom.
  • the supply amount from the upper opening 2a of the powder P is such that the powder P
  • the granular material P comes to be temporarily stored in the storage part 20, and in that case, the granular material deposit P1 in the storage part 20 Is formed.
  • the discharge unit 21 of the hopper 2 has a moving path 22 for the granular material P inside, and has a discharge port 2 b for the granular material P at the lower end of the moving path 22, and a storage unit.
  • the internal space 20 and the discharge port 2 b communicate with each other through the movement path 22.
  • the discharge portion 21 has a rectangular parallelepiped shape, and the discharge port 2b has a rectangular shape in which the length W in the vertical direction Y is longer than the length D in the transport direction X1 in plan view.
  • the four inner surfaces 210 that define the moving path 22 are all vertical surfaces extending in the vertical direction Z.
  • the length W in the vertical direction Y of the hopper 2 is constant over the entire length of the hopper 2 in the height direction.
  • the powder particle conveying means 3 includes a receiving means 30 that receives the powder P discharged from the hopper 2 and a vibration generating means 31 that vibrates the receiving means 30. .
  • the granular material conveying means 3 is disposed with a gap G with respect to the discharge port 2b located at the lower end of the hopper 2, and more specifically, discharged from the upper surface 30 a of the receiving means 30, that is, from the hopper 2. It arrange
  • the vibration generating means 31 is fixed to the lower surface 30 b of the receiving means 30.
  • the receiving means 30 is used for receiving and transporting the granular material P (in contact with the granular material P) in a portion located immediately below the discharge port 2b of the hopper 2 and its vicinity,
  • the portion is basically a powder non-contact portion that does not contact the powder P, and the vibration generating means 31 is fixed to the lower surface 30 b of the powder non-contact portion of the receiving means 30.
  • the granular material spraying device 10 includes a control unit 32 as a member corresponding to the vibration control unit in the above-described granular material spraying device 1 (see FIG. 1).
  • the control unit 32 appropriately measures the total weight of the hopper 2 including the powder P stored in the hopper 2 and acquires information such as a change in weight over time of the powder P in the hopper 2.
  • the vibration generating means 31 is controlled based on the acquired information.
  • the control unit 32 is electrically connected not only to the vibration generating unit 31 but also to the supply unit 90, and adjusts the degree of opening and closing of the valve included in the supply unit 90 based on the acquired information, thereby The supply amount of the granular material P can be adjusted.
  • the base material 100 which is an object to be dispersed of the granular material P, is a belt-like sheet, and is a roll-like material wound in a roll shape when not in use.
  • the base material 100 is continuously unwound from the roll, and the adhesive 101 is applied to one surface of the base material 100 by the adhesive application means 4.
  • the granular material P is sprayed from the receiving means 30 on the application surface.
  • dispersed on the base material 100 is fixed with an adhesive agent.
  • the transport method of the substrate 100 is not particularly limited, and can be continuously transported by a known transport device such as a transport roll or a belt conveyor.
  • the base material 100 and its conveying apparatus do not constitute the powder particle distribution apparatus 10.
  • the granular material spraying method of the present embodiment uses the granular material spraying apparatus 10 having the above-described configuration, supplies the granular material P from the supply unit 90 to the hopper 2 below the supply unit 90, and discharges the lower end of the hopper 2. It is a method of discharging the powder P from 2b and spraying it on the base material 100, which is an object to be spread, and the powder P is temporarily stored in the storage unit 20 of the hopper 2 as shown in FIG. In the state in which the granular material deposit P1 is formed, the granular material P is supplied from the supply unit 90 onto the granular material deposit P1 to form and maintain the granular material peak P0, and the outlet 2b. A granular material discharging step of discharging the granular material P from
  • One of the main problems to be solved by the powder particle dispersion method of the present embodiment is when the powder material P is supplied from the upper opening 2a of the hopper 2 and discharged quantitatively from the lower discharge port 2b.
  • the powder material P is supplied from the upper opening 2a of the hopper 2 and discharged quantitatively from the lower discharge port 2b.
  • the granular material P is temporarily stored in the hopper 2 and the granular material deposit P1 is formed, and the granular material P is supplied onto the granular material deposit P1, the supplied powder
  • This is a problem that the powder pressure fluctuation in the granular deposit P1 occurs due to the impact of the drop of the granular substance P, and the discharge amount of the granular substance P from the discharge port 2b changes.
  • the pile P0 of the granular material on the granular material deposit P1 vertically extends the extended region S of the discharge port 2b, that is, the discharge port 2b.
  • the supply of the powder P from the supply unit 90 is controlled so that it does not overlap with the extended region when virtually extending upward in the direction Z and does not contact the inclined surface 20A.
  • the position of the powder peak P0 is defined as the outlet 2b and the inclined surface 20A.
  • the influence of the supply of the granular material P to the hopper 2 on the discharge of the granular material P from the hopper 2 is minimized.
  • the powder P is supplied to the hopper 2 and discharged from the hopper 2 while keeping the upper surface P1a of the powder deposit P1 in the hopper 2 uniform, that is, substantially horizontal with no unevenness. Therefore, the flow of the powder particles in the hopper 2 is unlikely to be uneven, and the powder particles P can be discharged from the discharge port 2b quantitatively with high accuracy.
  • the above-mentioned “powder particle P0 does not overlap extension region S of discharge port 2b” means that the angle of the tangent to the inclined surface of powder particle peak P0 with respect to the horizontal direction is the peak of the powder particle. Focusing on the tangent that is the angle of repose of the granular material P constituting P0, it means that the tangent does not overlap the discharge port 2b.
  • the peak P0 of the granular material usually has a substantially conical shape, and has a skirt portion on the particle particle deposit P1 side and a top portion farthest from the particle particle deposit P1, and the skirt portion
  • the slope of the inclined surface is slightly gentler than the side closer to the top at the bottom.
  • the above-mentioned “powder pile P0 does not overlap with the extended region S of the discharge port 2b” is a case where such a skirt, that is, the hem edge of the powder pile P0, overlaps the discharge port 2b. It means that it is not excluded.
  • the supply of the granular material P is controlled using the angle of repose of P.
  • the angle of repose of the granular material P is an angle formed by the inclined surface of the peak P0 of the granular material and the upper surface P1a of the granular material deposit P1, and is a value unique to the granular material P. More specifically, as shown in FIG.
  • the hopper upper width T is preferably equal to or larger than the granular material supply width d, and more preferably more than twice the granular material supply width d.
  • the granular material supply width d is preferably at least 3 times the maximum particle diameter r of the granular material P, and more preferably at least 2 times the maximum particle diameter r. The maximum particle size r will be described later.
  • the granular material supply height h may be 0 mm, that is, the granular material P may be supplied into the hopper 2 so that the granular material peak P0 is not formed.
  • the upper limit of the granular material supply height h is not particularly limited, but in connection with this, the entire amount of the granular material P discharged from the lower end portion of the supply unit 90 is surely contained in the hopper 2. From the viewpoint of entering, as shown in FIG. 13, it is preferable that the lower end portion having the discharge port for the granular material P exists at a position lower than the upper opening 2 a of the hopper 2.
  • the powder in the hopper 2 The body deposit P1 needs to be formed. From this point of view, in the granular material discharging step, the supply amount S1 of the granular material P from the supply unit 90 per unit time is more than the discharged amount S2 of the granular material P from the discharge port 2b per unit time. It is preferable to increase it.
  • the powder peak P0 does not overlap the extended region S of the discharge port 2b and does not come into contact with the inclined surface 20A
  • the above-described characteristic configuration of the present invention mainly relates to a device for supplying powder to the hopper, but in addition to this, discharge of the powder from the hopper. It is also effective to devise a method in order to make it possible to quantitatively spray the granular material on the object to be sprayed with high spraying accuracy. Specifically, the adoption of the above-mentioned (1) to (4) in the first invention in the second invention makes it possible to quantitatively spray the granular material on the material to be sprayed with high spraying accuracy. It is effective in.
  • the method for spraying granular material of the present invention can be applied to a method for producing a functional sheet in which functional powder is arranged on a substrate.
  • the method for producing such a functional sheet includes, for example, a step of spraying the functional powder as the granular material P on the base material 100 as the material to be sprayed using the powder particle spraying method according to the embodiment. Have.
  • FIG. 15 shows another embodiment of a powder and particle distribution device that can be used in the method for distributing particles and powder according to the present invention (second invention).
  • second invention a different component from the granular material dispersion
  • the description of the powder particle distribution device 10 is appropriately applied.
  • the supply unit 90A has a shape (flat plate shape) in which the length in the vertical direction Y is longer than the length in the transport direction X1.
  • a powder outlet (not shown) is formed at the lower end of the supply section 90A.
  • the lower end of the supply section 90A having the powder outlet is a pair of inner side surfaces 20C of the storage section 20 of the hopper 2. 20C extends in the vertical direction Y and does not contact the inner side surface 20C, but both ends of the lower end portion in the vertical direction Y are close to the inner side surface 20C.
  • the granular material discharge port of the supply unit 90A when the granular material discharge port of the supply unit 90A is disposed close to the inner side surface 20C of the storage unit 20, the granular material discharged from the vicinity of the inner side surface 20C in the granular material discharge port is Before being supplied onto the granular material deposit in the hopper 2, it comes into direct contact with the inner surface 20 ⁇ / b> C. This is because the granular material in the hopper 2 is supplied from the supply unit 90 ⁇ / b> A to the hopper 2. Meaning that the “pile of granular material” formed on the granular material deposit is in contact with the inner surface 20C, and the method of supplying the granular material to the hopper 2 by the cylindrical supply unit 90 described above.
  • the difference between the inner surfaces 20C and 20C and the separation distance W2, that is, W1-W2 is preferably equal to or larger than 2h / tan ⁇ , and is not more than twice the maximum particle diameter r of the granular material P. preferable.
  • h is the granular material supply height (see FIG. 13)
  • ⁇ is the angle of repose of the granular material, and the details are as described above.
  • the present invention is not limited to the above-described embodiment and can be modified as appropriate.
  • the planar view shape of the discharge port 2b in the discharge portion 21 of the hopper 2 is not limited to a rectangular shape as shown in FIG. 13, but can be arbitrarily set to a circular shape, an elliptical shape, a polygonal shape, or the like.
  • a storage unit capable of temporarily storing powder particles therein, a discharge port for discharging the powder particles in the storage unit, and a moving path for powder particles connecting between the storage unit and the discharge port And a hopper provided with a gap with respect to the discharge port, transporting the powder particles discharged from the discharge port in a predetermined direction, and spraying onto a continuously transported substrate
  • a granular material spraying device comprising means,
  • the discharge port has a shape in which the length in the direction orthogonal to the conveyance direction of the powder particles by the conveyance unit is longer than the length in the conveyance direction in plan view,
  • the moving path has a maximum width in the transport direction that is not less than 2 times and less than 5 times the maximum particle diameter of the granular material, and the length in the direction in which the granular material is discharged has a maximum particle diameter of the granular material.
  • the said granular material spraying apparatus which is 1 time or more of the largest particle diameter of the said granular material.
  • the hopper is connected to the storage unit, and includes a discharge unit having the discharge port at a lower end, and an inner wall defining an internal space of the storage unit is obliquely downward toward the discharge unit.
  • diffusion apparatus as described in said ⁇ 1> or ⁇ 2> containing the inclination inner side wall extended in a vertical direction, and the vertical wall extended in a perpendicular direction.
  • the storage unit has a trapezoidal shape in which the upper base is longer than the lower base when viewed from a direction orthogonal to the conveyance direction, With respect to the transport direction, the length of the upper base of the storage unit is longer than the length of the discharge port, and with respect to the direction orthogonal to the transport direction, the length of the upper base of the storage unit is the length of the discharge port.
  • the granular material spraying device according to ⁇ 4> which is the same as Sato.
  • the ratio of the length (W) in the direction orthogonal to the transport direction and the length (D) in the transport direction is preferably 2 or more and 1000 or less as W / D.
  • a granular material spraying device according to any one of the above items ⁇ 1> to ⁇ 5>, which is 5 or more and 100 or less.
  • the conveying means includes a flat plate receiving means for receiving the powder discharged from the hopper, and a vibration generating means for vibrating the receiving means, and operates the vibration generating means.
  • the powder on the receiving means can be conveyed in the one direction, Assuming that the size of the gap is G and the angle of repose of the granular material is ⁇ , the intersection of the imaginary straight line extending vertically through the center of the discharge port and the transport means is the transport in the transport means.
  • spreading apparatus as described in any one.
  • the material of the inner wall of the hopper is one or more selected from the group consisting of stainless steel, glass, zirconia, silicon nitride and other ceramic materials, and any one of the above ⁇ 1> to ⁇ 10> The granular material dispersion
  • ⁇ 12> The granular material spraying device according to any one of ⁇ 1> to ⁇ 9>, wherein the granular material is a non-conductive material.
  • ⁇ 13> The granular material spraying device according to ⁇ 12>, wherein the material of the inner wall of the hopper is a conductive material.
  • ⁇ 14> The granular material spraying device according to ⁇ 13>, wherein the material of the inner wall of the hopper is at least one selected from the group consisting of a metal material, an alloy material, a conductive ceramic, and a conductive resin.
  • ⁇ 15> The granular material spraying device according to any one of ⁇ 1> to ⁇ 14>, wherein the material of the inner wall of the hopper is stainless steel.
  • ⁇ 16> ⁇ 1 / ⁇ which is a ratio of an angle of repose ( ⁇ ) of the granular material and an angle ( ⁇ 1) with respect to a horizontal direction of an inner surface of the hopper in contact with the granular material, is preferably 1.2 or more More preferably, the granular material spraying device according to any one of the above items ⁇ 1> to ⁇ 15>, which is 1.5 or more.
  • the angle ( ⁇ 1) with respect to the horizontal direction of the inner surface of the hopper that contacts the granular material is preferably 1.2 ⁇ or more and 90 ° or less, more preferably 1.5 ⁇ or more and 90 ° or less ⁇ 16>.
  • the inner wall of the hopper has a value measured according to JIS B 0601-2001, preferably 10 ⁇ m or less, and more preferably, the surface roughness Ra of the surface of the hopper, that is, the inner surface of the hopper that contacts the granular material.
  • a granular material spraying device according to any one of the above items ⁇ 1> to ⁇ 17>, which is 1 ⁇ m or less.
  • the inner wall of the hopper has an inner surface in contact with the powder body in the hopper, that is, a flange portion and a groove portion extending in a predetermined direction are alternately arranged in a direction orthogonal to the predetermined direction.
  • the granular material spraying device according to any one of ⁇ 1> to ⁇ 18>, which has a fluted shape.
  • ⁇ 20> The granular material according to any one of ⁇ 1> to ⁇ 19>, wherein an inner wall of the hopper has a surface thereof, that is, an inner surface that contacts the granular material in the hopper, coated with a fluororesin. Body spraying device.
  • the conveying means controls a flat receiving means for receiving the powder discharged from the hopper, a vibration generating means for vibrating the receiving means, and a voltage and a frequency applied to the vibration generating means.
  • the vibration control unit controls the vibration frequency and amplitude of the receiving means, and further controls the conveying state of the powder on the receiving means ⁇ 1> to ⁇ 20> Any one of the granular material spraying devices.
  • ⁇ 23> Any one of the items ⁇ 1> to ⁇ 22>, wherein the granular material has an irregular shape, and the maximum particle diameter of the irregular shaped granular material is measured by a laser diffraction method.
  • the granular material spraying device as described in one.
  • ⁇ 24> a weighing device that continuously measures the total weight of the hopper and the granular material stored in the hopper; The amount of change per unit time of the total weight is measured, and the amount of change per unit time of the powder particles sprayed by the transport means is matched with the target amount of application per unit time. Independent of this control, if the total weight falls below a threshold value, the powder particles in the hopper until the total weight reaches the initial set weight. And a control means for performing control for replenishing the body, ⁇ 1> to ⁇ 23>, wherein the granular material spraying device according to any one of the above ⁇ 1> to ⁇ 23>.
  • the control unit pauses the control of the transport capability of the transport unit, and controls the transport capability of the transport unit during the control pause.
  • the granular material spraying device according to ⁇ 24> which is configured to be held at the immediately preceding conveyance capacity.
  • the control means is configured to resume the control of the conveying means when the total weight has continuously decreased over a predetermined time after the replenishment of the granular material to the hopper is completed.
  • the total weight is measured every predetermined time t (seconds), the difference between the total weight measured and the total weight measured before t (seconds) is calculated, and the value is calculated as t (seconds).
  • the value divided by is defined as the amount of change per unit time, and the control means controls the conveying capacity of the conveying means according to the amount of change. apparatus.
  • the total weight is measured every predetermined time s (seconds), and the difference between the total weight measured and the total weight measured before t (seconds) (s ⁇ t) is calculated.
  • a value obtained by dividing the value by t (seconds) is defined as a change amount per unit time, and any one of the above items ⁇ 24> to ⁇ 26> for controlling the transfer capability of the transfer unit according to the change amount
  • the spraying method of the granular material as described in one.
  • a control unit that controls a voltage and a frequency applied to a vibration generating unit that vibrates a receiving unit that receives the powder particles discharged from the hopper is provided, and the control unit controls the frequency of the receiving unit.
  • ⁇ 33> A method for spraying powder particles, wherein the powder particles are sprayed onto a substrate that is continuously conveyed using the powder particle spray device according to any one of ⁇ 1> to ⁇ 23>. .
  • ⁇ 34> A method for producing a granular material-containing article, comprising the step of spraying the granular material on a continuously conveyed substrate using the scattering method according to ⁇ 33>.
  • ⁇ 35> A method for producing a functional article, comprising a step of spraying a water-absorbing polymer or an electrolyte on the substrate as the granular material using the spraying method according to ⁇ 33>.
  • the base material includes a heat-generating composition containing an oxidizable metal and water on one surface of a sheet-like material, and has water absorption from the conveying means on the heat-generating composition.
  • the hopper has a storage unit capable of temporarily storing the granular material supplied from the supply unit, the storage unit as an inner surface defining a storage space for the granular material, with respect to the vertical direction Has an inclined surface, In a state where the granular material is temporarily stored in the storage unit and the granular material deposit is formed, the granular material is supplied from the supply unit onto the granular particle deposit, and the pile of the granular material is collected.
  • the supply amount per unit time of the powder from the supply unit is greater than or equal to the discharge amount of the powder from the discharge port per unit time ⁇ 37> Or the spraying method of the granular material as described in ⁇ 38>.
  • the object to be dispersed is conveyed in a predetermined direction, and the inclined surface extends in the vertical direction orthogonal to both the conveying direction of the object to be dispersed and the vertical direction.
  • the storage unit has a pair of inner side surfaces that extend in the transport direction and are spaced apart in the vertical direction as inner surfaces that define a storage space for powder particles.
  • the method for spraying powder according to ⁇ 40> wherein supply of the powder from the supply unit is controlled so that a crest of the powder does not contact the inner surface.
  • the storage unit has a vertical surface facing the inclined surface as an inner surface that defines a storage space for the granular material, the inclined surface is upstream in the transport direction, and the vertical surface is the transport.
  • the hopper has a moving path for granular material that connects between the storage unit and the discharge port,
  • the moving path has a maximum width in the transport direction of 2 to less than 5 times the maximum particle diameter of the granular material, and a length in the direction in which the granular material is discharged is 1 of the maximum particle diameter of the granular material.
  • ⁇ 45> A method for producing a functional sheet in which functional powder is disposed on a substrate, Using the powder particle dispersion method according to any one of ⁇ 37> to ⁇ 44>, the functional powder as the powder particle is sprayed on the base material as the material to be dispersed.
  • the manufacturing method of a functional sheet which has a process.
  • Examples 1 to 5 and Comparative Examples 1 to 3 First Invention
  • the granular material spraying apparatus 1 shown in FIGS. 1 to 4 the granular material having the same structure as the granular material spraying apparatus 1 except that the dimensions and the like of some constituent members are changed as shown in Table 1 below.
  • a spraying device powder particles were sprayed on a substrate (nonwoven fabric, transport speed 40.95 m / sec) continuously transported in one direction (Examples 1 to 5 and Comparative Examples 1 and 2).
  • the granular material was spread
  • the powder water-absorbing polymer particles or sodium chloride having a maximum particle diameter and an angle of repose within the range shown in Table 1 below were used.
  • the maximum particle diameter of the granular material was measured by a dynamic light scattering method, and a laser diffraction / scattering particle diameter distribution measuring apparatus LA950V2 manufactured by HORIBA was used as a measuring apparatus.
  • diffusion apparatus of each Example and a comparative example is formed with stainless steel the whole inner and outer surface including an inner wall.
  • the maximum width D of the moving path 22 in the particle conveyance direction X is not less than 2 times and less than 5 times the maximum particle diameter r of the particles, that is, a relationship of “2 ⁇ D / r ⁇ 5” is established. It turns out that it is effective.
  • the length H in the powder discharge direction of the moving path 22 is the maximum particle diameter r of the powder. It can be seen that it is also effective to establish a magnitude relationship that is equal to or greater than 1 ⁇ , that is, “r ⁇ H”.
  • Example A1 first invention
  • the dimensions and the like of the constituent members were set to the values shown in Table 2 below.
  • the granular material was spread
  • the target spray rate of the powder and granular material was set to 0.45 g / second.
  • water-absorbing polymer particles having a maximum particle diameter and an angle of repose within the ranges shown in Table 2 below were used.
  • the maximum particle size of the granular material was measured by a dynamic light scattering method, and a laser diffraction / scattering particle size distribution measuring device LA950V2 manufactured by HORIBA was used as a measuring device.
  • the hopper including the inner wall is entirely made of stainless steel.
  • a load cell was used as the weighing device 50, and the hopper-containing powder weight A was measured at intervals of 1 second.
  • the control of the vibration generating means 31 by the control unit 40 is amplitude control based on PI control.
  • the hopper-containing powder weight A is 0.4A 4 + A 2 (A 4 represents the weight of the powder in the hopper when the powder is fully filled, A 2 represents the weight of the hopper.)
  • a 4 represents the weight of the powder in the hopper when the powder is fully filled, A 2 represents the weight of the hopper.
  • Example A1 the vibration generating means 31 was controlled by the control unit 40 even during the supply of the granular material by the powder supply device 90. Except for this, the powder particles were dispersed under the same conditions as in Example A1. The amount of the granular material sprayed at that time was measured as in Example A1. The result is shown in FIG.
  • Example A1 according to the present invention (first invention) the amount of the granular material sprayed is almost constant over the entire period from the initial stage to the final stage of the spraying. I understand. In contrast to this, in Comparative Example A1, it can be seen that the amount of the granular material applied is not constant but fluctuates.
  • Example B1 and Reference Examples B1 and B2 Second Invention
  • the powder particle supply position X (see FIG. 13) is appropriately changed, and the lower part of the hopper is continuously conveyed in one direction.
  • a granular material was spread on a base material (nonwoven fabric, conveyance speed 40.95 m / sec).
  • a base material nonwoven fabric, conveyance speed 40.95 m / sec.
  • water-absorbing polymer particles having a maximum particle diameter and an angle of repose within the ranges shown in Table 3 below were used.
  • the maximum particle size of the granular material was measured by a dynamic light scattering method, and a laser diffraction / scattering particle size distribution measuring device LA950V2 manufactured by HORIBA was used as a measuring device.
  • a laser diffraction / scattering particle size distribution measuring device LA950V2 manufactured by HORIBA was used as a measuring device.
  • the whole inner and outer surface was formed with stainless steel.
  • the present invention it is possible to uniformly disperse the powder particles in the width direction of the base material on the continuously transported base material.
  • the granular material spraying device (the first invention of the device) of the present invention makes the flow of the granular material in the moving path for the granular material provided in the device steady and improves the fluidity of the granular material. Therefore, even when the granular material is not true spherical or when the particle size distribution is relatively wide, clogging of the granular material is difficult to occur. It can be uniformly sprayed in the width direction of the base material and can be quantitatively sprayed with high accuracy in the transport direction of the base material.
  • the amount of the granular material stored in the supply device such as a hopper can be made constant.
  • the influence of the supply of the granular material to the hopper on the discharge of the granular material from the hopper is minimized, and the upper surface of the granular material deposit in the hopper is reduced. While maintaining the uniformity, both the supply of powder to the hopper and the discharge of the powder from the hopper are performed, so the flow of the powder in the hopper is unlikely to be uneven, and the powder is scattered on the material to be spread. Granules can be dispersed quantitatively with high dispersion accuracy.
  • such a method of spraying powder with excellent quantitative properties basically requires no special equipment for its implementation, and can be implemented using existing equipment. But it is advantageous.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)

Abstract

La présente invention concerne un dispositif de pulvérisation de matière particulaire (1) qui est pourvu de : une trémie (2) qui est équipée d'une partie de stockage (20) pouvant stocker temporairement une matière particulaire (P) à l'intérieur de celui-ci, un orifice de décharge (23) pour décharger la matière particulaire (P), et un canal de transfert de matière particulaire (22) pour le raccordement entre la partie de stockage (20) et l'orifice de décharge (23) ; et un moyen de transport (3) qui est disposé à l'opposé de l'orifice de décharge (23) avec un espacement (G) étant créé entre ceux-ci, qui transporte la matière particulaire (P) déchargée depuis l'orifice de décharge (23) dans une direction prescrite (X), et qui pulvérise la matière particulaire sur un matériau de base (100) qui est transporté en continu. L'orifice de décharge (23) est formé de manière à avoir une forme longue dans laquelle, dans une vue avant, la longueur dans une direction orthogonale à la direction de transport (X) est plus longue que la longueur dans la direction de transport (X). Le canal de transfert de matière particulaire (22) a une largeur maximale (D) dans la direction de transport (X) au moins deux fois mais moins de cinq fois plus élevée que le diamètre de particule maximal de la matière particulaire (P), et a une longueur (H) dans la direction de décharge de la matière particulaire (P) égale ou supérieure au diamètre de particule maximal de la matière particulaire (P). La dimension de l'espacement (G) est égale ou supérieure au diamètre de particule maximal de la matière particulaire (P).
PCT/JP2016/079143 2015-10-06 2016-09-30 Dispositif de pulvérisation de matière particulaire, procédé de pulvérisation de matière particulaire, et procédé de production d'un article contenant une matière particulaire WO2017061339A1 (fr)

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Cited By (4)

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Publication number Priority date Publication date Assignee Title
CN107814215A (zh) * 2017-11-27 2018-03-20 苏州三屹晨光自动化科技有限公司 一种转子用轴杆供料机构
WO2019065713A1 (fr) * 2017-09-29 2019-04-04 株式会社ニコン Appareil d'alimentation, système de traitement et procédé de traitement
WO2020188741A1 (fr) * 2019-03-19 2020-09-24 株式会社ニコン Dispositif d'alimentation, système de traitement, et procédé de traitement
WO2021166731A1 (fr) * 2020-02-21 2021-08-26 花王株式会社 Procédé de pulvérisation de matière particulaire et procédé de production d'un article contenant une matière particulaire

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JPS53112938A (en) * 1977-03-11 1978-10-02 Nat Jutaku Kenzai Powder painting apparatus
JPS5774329U (fr) * 1980-10-23 1982-05-08
JPH10185663A (ja) * 1996-12-27 1998-07-14 Sekisui Chem Co Ltd スクリューフィーダ
JP2003341849A (ja) * 2002-05-21 2003-12-03 Yorigami Maritime Construction Co Ltd 土砂等の定量供給装置
JP2007106103A (ja) * 2005-09-16 2007-04-26 Nippon Paint Co Ltd 印刷方法およびそのための装置

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Publication number Priority date Publication date Assignee Title
JPS53112938A (en) * 1977-03-11 1978-10-02 Nat Jutaku Kenzai Powder painting apparatus
JPS5774329U (fr) * 1980-10-23 1982-05-08
JPH10185663A (ja) * 1996-12-27 1998-07-14 Sekisui Chem Co Ltd スクリューフィーダ
JP2003341849A (ja) * 2002-05-21 2003-12-03 Yorigami Maritime Construction Co Ltd 土砂等の定量供給装置
JP2007106103A (ja) * 2005-09-16 2007-04-26 Nippon Paint Co Ltd 印刷方法およびそのための装置

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019065713A1 (fr) * 2017-09-29 2019-04-04 株式会社ニコン Appareil d'alimentation, système de traitement et procédé de traitement
CN107814215A (zh) * 2017-11-27 2018-03-20 苏州三屹晨光自动化科技有限公司 一种转子用轴杆供料机构
CN107814215B (zh) * 2017-11-27 2024-03-22 苏州三屹晨光自动化科技有限公司 一种转子用轴杆供料机构
WO2020188741A1 (fr) * 2019-03-19 2020-09-24 株式会社ニコン Dispositif d'alimentation, système de traitement, et procédé de traitement
WO2021166731A1 (fr) * 2020-02-21 2021-08-26 花王株式会社 Procédé de pulvérisation de matière particulaire et procédé de production d'un article contenant une matière particulaire

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