WO2008032401A1 - Appareil de nettoyage d'un objet de type feuille, procédé de nettoyage d'un objet de type feuille à l'aide de celui-ci et processus pour fabriquer un polymère de type plaque - Google Patents

Appareil de nettoyage d'un objet de type feuille, procédé de nettoyage d'un objet de type feuille à l'aide de celui-ci et processus pour fabriquer un polymère de type plaque Download PDF

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Publication number
WO2008032401A1
WO2008032401A1 PCT/JP2006/318384 JP2006318384W WO2008032401A1 WO 2008032401 A1 WO2008032401 A1 WO 2008032401A1 JP 2006318384 W JP2006318384 W JP 2006318384W WO 2008032401 A1 WO2008032401 A1 WO 2008032401A1
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WO
WIPO (PCT)
Prior art keywords
sheet
cleaning liquid
cleaning
gas nozzle
downstream
Prior art date
Application number
PCT/JP2006/318384
Other languages
English (en)
Japanese (ja)
Inventor
Takayuki Hirano
Hajime Okutsu
Tomonari Murakami
Hirotoshi Mizota
Original Assignee
Mitsubishi Rayon Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Rayon Co., Ltd. filed Critical Mitsubishi Rayon Co., Ltd.
Priority to PCT/JP2006/318384 priority Critical patent/WO2008032401A1/fr
Publication of WO2008032401A1 publication Critical patent/WO2008032401A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B08B3/022—Cleaning travelling work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B08B3/041—Cleaning travelling work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B5/00—Cleaning by methods involving the use of air flow or gas flow

Definitions

  • Sheet cleaning device Sheet cleaning method using the same, and plate polymer manufacturing method
  • the present invention relates to a sheet-like material cleaning device that runs continuously, a sheet-like material cleaning method using the same, and a plate-like polymer manufacturing method, and more specifically, by a simple device and method.
  • the present invention relates to a sheet-like material cleaning apparatus, a cleaning method, and a plate-shaped polymer manufacturing method, which can reduce the amount of cleaning liquid remaining on the upper surface after performing the cleaning described above and suppress the occurrence of residual traces of the cleaning liquid.
  • a pair of two endless belts provided facing each other running at the same speed in the same direction.
  • a polymerizable raw material is supplied from one end of a belt into a space surrounded by an opposite belt surface and a pair of endless gaskets that are sandwiched between both ends of the pair of belt surfaces.
  • a continuous plate-making method is known in which a polymerizable raw material is conveyed into a heating zone by traveling to sequentially polymerize the polymerizable material, and a plate-like polymer is taken out from the other end.
  • the endless belt becomes contaminated with deposits or release agents that have polymer strength, and the surface becomes contaminated over time. If the contamination of the endless belt becomes severe, the surface appearance and surface functionality of the produced plate-like polymer are impaired, and thus the contamination must be removed. However, in order not to impair the appearance of the product, the surface of the endless belt needs to have high surface smoothness, so that the belt surface is not scratched and the contaminants are removed and cleaned. It is required to remove contaminants so that no residue remains.
  • a cleaning method is used in which a cleaning liquid is supplied onto the sheet-like material, and then the cleaning liquid is removed and dried by an air flow or the like.
  • a conveying device that conveys a sheet-like material
  • a cleaning liquid supply unit that sprays and supplies the washing liquid to the plate-like material by spraying, etc., and air is supplied onto the sheet-like material.
  • a powerful part such as a drying section for removing and drying the cleaning liquid is known.
  • the above-described cleaning apparatus is widely used for single wafer cleaning represented by a glass substrate for liquid crystal display.
  • the cleaning of the substrate by such a cleaning apparatus is performed by supplying the cleaning liquid to the substrate, transporting the substrate with the cleaning liquid on the upper surface to a cleaning liquid removing and drying unit such as an air knife, and the cleaning liquid on the substrate passing through the air knife or the like. Most of the air is collected to the upstream side of the conveyance by the air pressure, and is removed by blowing off the conveyance upstream end force of the substrate (Patent Document 1).
  • a continuous sheet-like object such as an endless belt does not have an end in the conveyance direction as in the single-wafer type, but most of the cleaning liquid is conveyed by the air pressure when passing through the air flow.
  • the area that is moved to the improved flow side and the cleaning liquid occupies on the sheet-like material is wide. If the cleaning liquid stays on the belt more extensively than necessary, the cleaning liquid itself is contaminated due to the influence of foreign substances from the surrounding environment, and the cleaning effect cannot be obtained sufficiently.
  • the cleaning is performed only when the amount of accumulated contaminants on the belt increases, and thus cleaning is performed at a certain frequency.
  • the power to be used The problem is how to treat the cleaning solution remaining on the belt after cleaning.
  • To-be-dried force As a method for efficiently removing the water droplet mist, for example, an air knife opened on the non-conveying side in an inclined state with respect to the to-be-dried material is installed, and this is provided on the anti-conveying side of the air knife.
  • An air knife device with an intake duct that intakes air in parallel with the air has been reported.
  • this device is a device that prevents the mist from re-adhering and dries, the cleaning liquid on the belt end upstream of the air knife becomes a liquid pool and is dried while moving toward the other end of the belt.
  • Patent Document 3 When a watermark is generated and the appearance of the belt is impaired, there is a problem (Patent Document 3).
  • Patent Document 1 Japanese Patent Laid-Open No. 2000-246191
  • Patent Document 2 Japanese Patent Laid-Open No. 2002-346485
  • Patent Document 3 Japanese Patent Laid-Open No. 7-35478
  • the problem of the present invention is that the cleaning liquid does not remain on the continuously running sheet-like material, so that a residual mark of the cleaning liquid, a so-called watermark is not left, and the appearance of the sheet-like material is not deteriorated. It is an object of the present invention to provide a method for cleaning a sheet-like material, a cleaning device used therefor, and a method for producing a plate-like polymer.
  • a cleaning liquid is supplied to the surface of the sheet-like material that runs substantially horizontally continuously, and this cleaning liquid is supplied from a pair of gas nozzles so as to form a wall shape vertically downward in a direction perpendicular to the traveling direction of the sheet-like material.
  • a gas stream is ejected and held on the sheet-like material during this time. At this time, excess cleaning liquid falls from the side edge of the sheet-like material.
  • the cleaning liquid held on the sheet-like material is removed from the sheet-like material by the downstream gas flow, and the sheet-like material is washed.
  • the movable gas nozzle force provided on the sheet-like material between the pair of gas nozzles also ejects a gas flow, The cleaning liquid remaining on the sheet is removed.
  • the inventors have found that it is possible to suppress the occurrence of residual traces of the cleaning liquid and the so-called watermark on the upper surface of the sheet-like material.
  • the movable gas nozzle is moved in a horizontal direction perpendicular to the traveling direction of the sheet-like material, and the cleaning liquid remaining by the gas flow ejected from the movable gas nozzle is dropped and removed from the side edge of the sheet-like material.
  • the present inventors have found that cleaning can be performed without significantly reducing the appearance of the watermark and reducing the appearance of the sheet-like material.
  • a slit-like opening having a width corresponding to the width of the sheet-like material is provided between the pair of gas nozzles 1 or two or more cleaning liquid supply nozzles sequentially provided along the traveling direction of the sheet-like material Therefore, by supplying a cleaning liquid having a specific viscosity at a specific speed, mixing of the cleaning liquid on the upstream side and the downstream side can be suppressed. For this reason, it has been found that the sheet-like material can be washed by moving from the upstream side to the downstream side with a cleaning liquid having a higher cleanliness, and based on these findings, the present invention has been completed.
  • the present invention is provided on a sheet-like object that continuously travels substantially horizontally, and ejects a vertically downward upstream gas flow and a downstream gas stream perpendicular to the running direction of the sheet-like object.
  • a cleaning device having an upstream gas nozzle and a downstream gas nozzle, and a cleaning liquid supply nozzle for supplying a cleaning liquid onto a sheet-like material between the upstream gas flow and the downstream gas flow, between the upstream gas nozzle and the downstream gas nozzle
  • the present invention relates to an apparatus for cleaning a sheet-like material provided with a movable gas nozzle that ejects a gas flow for removing the cleaning liquid remaining on the sheet-like material.
  • an upstream gas nozzle and a downstream gas nozzle provided on a sheet material that continuously travels substantially horizontally, each having a vertically downward upstream gas flow orthogonal to the traveling direction of the sheet material.
  • the downstream gas flow is ejected, and the cleaning liquid is supplied onto the sheet-like material in a certain area partitioned by the pair of gas flows, and the cleaning liquid is supplied to the upstream side of the upstream gas flow and the downstream side of the downstream gas flow.
  • the present invention relates to a method for cleaning a sheet-like material in which a flow is ejected to remove a cleaning liquid remaining on the sheet-like material.
  • the present invention provides an upstream side provided on a sheet-like object that continuously travels substantially horizontally.
  • a gas nozzle and a downstream gas nozzle cover each of the sheet-like material in a certain region partitioned by this pair of gas flows by ejecting a vertically downward upstream gas flow and a downstream gas flow orthogonal to the traveling direction of the sheet-like material.
  • a cleaning liquid having a slit-like opening having a width corresponding to the width, or a cleaning liquid having a viscosity of lOOmPa's or less is supplied from two or more cleaning liquid supply nozzles sequentially provided along the traveling direction of the sheet-like material.
  • the average flow rate is in the range of 1 to: LOmZs, and the cleaning liquid supplied from the cleaning liquid supply nozzle is accumulated and retained on the sheet material in the predetermined area, and the excess cleaning liquid is applied to the side force of the sheet material.
  • the mixing of the cleaning liquid staying on the sheet-like material is suppressed between upstream and downstream, and the surface of the sheet-like material is directed from the upstream side to the downstream side to move to a cleaning liquid with higher cleanliness and washing.
  • Sheet to perform Things a method of cleaning.
  • the present invention provides a pair of opposed belt surfaces of two endless belts that face each other and run in the same direction at the same speed, and both end portions of the pair of opposed belt surfaces.
  • a polymerizable raw material is supplied from one end to a space surrounded by a pair of endless gaskets that are sandwiched between the two, and the polymerizable raw material is transported into the heating zone by the running of the belt.
  • the present invention relates to a method for producing a polymer.
  • the sheet-like material cleaning apparatus and sheet-like material cleaning method of the present invention reduces the cleaning liquid remaining on the cleaning surface of the continuously running sheet-like material, leaving no residual marks of the cleaning liquid, so-called watermarks,
  • the sheet-like material can be washed without causing appearance defects.
  • FIG. 1 is a diagram showing a schematic configuration of a belt-type continuous plate making apparatus to which a sheet-like material cleaning device of the present invention is applied.
  • FIG. 2 is a diagram showing a schematic top view of an essential part of an example of a sheet cleaning apparatus of the present invention.
  • FIG. 3 is a schematic top view of an essential part of an example of a sheet cleaning apparatus of the present invention.
  • FIG. 4 is a schematic side view of a main part of an example of a cleaning apparatus to which the sheet-like material cleaning method of the present invention is applied.
  • FIG. 5 is a diagram showing a schematic top view of an essential part of an example of a cleaning apparatus to which the sheet-like material cleaning method of the present invention is applied.
  • FIG. 6 is a diagram showing a schematic side view of the main part of another example of the cleaning apparatus to which the sheet-like material cleaning method of the present invention is applied.
  • FIG. 7 is a diagram showing a schematic configuration diagram of another belt type continuous plate making apparatus to which the sheet-like material cleaning device of the present invention is applied.
  • FIG. 8 is a diagram showing a schematic configuration diagram of another belt type continuous plate making apparatus to which the sheet-like material cleaning device of the present invention is applied.
  • FIG. 1 is a schematic configuration diagram showing an example of a sheet-like material cleaning apparatus of the present invention
  • FIG. 2 is a schematic top view showing the main part
  • FIG. 6 is a schematic side view showing the main part of another example. It is.
  • the sheet-like material cleaning apparatus of the present invention is provided on a sheet-like material 1 that continuously travels substantially horizontally, and has a vertically downward upstream gas flow and a downstream side perpendicular to the traveling direction of the sheet-like material.
  • a cleaning liquid supply that supplies cleaning liquid to the upper surface of the sheet-like object between the upstream gas flow 4 and the downstream gas nozzle 5 and the upstream gas flow 4 and the downstream gas flow 5 that respectively eject the gas flow
  • a movable gas nozzle 14 for ejecting a gas flow for removing the cleaning liquid remaining on the upper surface of the sheet-like material between the upstream gas nozzle and the downstream gas nozzle.
  • the sheet-like material to be cleaned by the sheet-like material cleaning device of the present invention may be a belt-like sheet-like material that travels substantially horizontally and continuously in one direction.
  • the fact that the sheet-like material is substantially horizontal includes the case where the sheet-like material is not strictly horizontal, and the case where the sheet-like material can be deposited by spreading the cleaning liquid over the cleaning region in a certain region. It is also possible to apply tension to the sheet material along the running direction so that the sheet material substantially holds a horizontal flat.
  • an endless belt as shown in the figure can be mentioned as a preferable one. Since the endless belt 1 is suspended by a pair of pulleys 2 and 3 and one of these is connected to the shaft of the motor and travels by its rotation, stable cleaning can be performed.
  • the traveling direction of the sheet-like material is the same as the longitudinal direction of the sheet-like material, and one direction is preferable because cleaning is performed sequentially.
  • the traveling speed of the sheet-like material depends on the type of contaminant, the type of cleaning liquid selected depending on the degree, the concentration, the supply amount, etc. It can be determined from the relationship between the distance between the upstream gas nozzle 4 and the downstream gas nozzle 5 where cleaning is performed. From the viewpoint of stability of the cleaning liquid deposited on the sheet-like material, removal of the cleaning liquid by the downstream air nozzle and prevention of dry spots, the traveling speed of the sheet-like material can be, for example, 20 mZmin or less, preferably 1 OmZmin or less.
  • the material for the sheet-like material for example, any of resin, metal and the like can be used.
  • the metal include austenitic stainless steel, martensitic stainless steel, steel, aluminum, and copper.
  • the surface of these metal sheets is polished!
  • the sheet-like material is preferably made of a metal that preferably has high rigidity capable of maintaining traveling in a horizontal state, it is generally preferable because it has relatively high rigidity even if it is thin.
  • the thickness of the sheet-like material is preferably 0.1 mm or more because it can have the rigidity described above.
  • the length of the sheet-like material to which the present invention is applied is not limited, the endless belt that can continuously run can be most stably and efficiently cleaned. Therefore, it is preferable.
  • the cleaning liquid supply nozzle used in the sheet-like material cleaning apparatus of the present invention is provided on the sheet-like material and supplies the cleaning liquid onto the sheet-like material. It is preferable that the cleaning liquid supply nozzle has a mechanism capable of retracting the force on the sheet-like material in accordance with the operation of the movable gas nozzle, which will be described later.
  • the shape of the cleaning liquid supply nozzle is not particularly limited, and the opening may be spot-shaped, slit-shaped, or elliptical.For example, in the case of a spot-shaped opening, a plurality of nozzles are arranged in a line in the width direction of the sheet-like material. It may be provided in an array.
  • the cleaning liquid supplied from the cleaning liquid supply nozzle is placed on the sheet-like material, mixing is suppressed on the upstream side and the downstream side of the cleaning liquid supply nozzle, divided, and sequentially cleaned toward the downstream side.
  • the cleaning liquid supply nozzle has a slit-like opening having a width similar to the width of the sheet-like material, so that the cleaning liquid can be supplied over the entire width of the sheet-like material. This is preferable.
  • the cleaning liquid supply nozzle having a slit-like opening having a width similar to the width of the sheet-like material is coupled with the specific supply amount and viscosity of the cleaning liquid, and the upper force of the sheet-like material due to splashes etc. Can be prevented from falling, accumulate and stay as it is, and mixing between the cleaning liquid deposited on the upstream side and the cleaning liquid deposited on the downstream side on the sheet-like material can be suppressed.
  • the cleaning liquid supply nozzle is provided with two or more forces sequentially provided along the traveling direction of the sheet-like material.
  • the cleaning liquid supply nozzles 6 and 6 ′ (FIG. 4) are preferable.
  • the cleaning liquid is supplied from each of the plurality of cleaning liquid supply nozzles, and the cleaning liquid is supplied.
  • the cleaning liquid supplied from the respective cleaning liquid supply nozzles is prevented from being mixed on the upstream side and the downstream side on the sheet-like material. Accumulate and stay.
  • a cleaning liquid receiver 7 is preferably provided below the side edge of the sheet to collect the cleaning liquid dropped from the side edge.
  • the supply amount of the cleaning liquid supplied from such a cleaning liquid supply nozzle can be appropriately selected depending on the type and degree of contaminants, the traveling speed of the sheet-like material, the width thereof, and the like. However, it is possible to set the supply amount so that the excessive amount of the liquid that can be deposited on the sheet-like material also flows down the side edge force of the sheet-like material and the cleaning liquid on the sheet-like material is renewed.
  • the supply amount of the cleaning liquid is preferably in the range of 1 to LOmZs as an average flow rate depending on the relationship with the viscosity of the cleaning liquid.
  • the cleaning liquid can be supplied to the sheet-like material as a curtain, and the effect of suppressing the mixing of the upstream and downstream cleaning liquids is increased. That is, as shown in FIG. 5, the cleaning liquid supplied from the cleaning liquid supply nozzle is deposited and retained on the sheet-like material located between a pair of gas flows, and the amount of liquid that can be deposited on the sheet-like material More excessive amount of the side edge of the sheet material flows down and the cleaning liquid on the sheet material is renewed. At this time, mixing between the upstream side and the downstream side of the cleaning liquid staying on the sheet-like material between the pair of gas flows can be suppressed, and the sheet-like material is moved from the upstream side as the sheet-like material travels.
  • the cleaning liquid supplied from the cleaning liquid supply nozzle 6 shown in FIG. 5 is deposited as the cleaning liquid 15 and the cleaning liquid 16 separately on the upstream side and the downstream side on the sheet-like material.
  • excess cleaning liquid that exceeds the amount that can be deposited on the sheet material falls from the side edge of the sheet material.
  • the cleaning liquid supplied from the cleaning liquid supply nozzle is similarly deposited as cleaning liquid 16 and cleaning liquid 17. That is, the cleaning liquid 16 is the cleaning liquid supplied from the cleaning liquid supply nozzle 6 and the cleaning liquid supplied from the supply nozzles 6 on the cleaning liquid deposited on the downstream side of the cleaning liquid supply nozzle 6.
  • the cleaning liquid discharged on the tank accumulates.
  • the cleaning liquid 16 has a lower concentration of contaminants than the cleaning liquid 15, and similarly, the concentration of contaminants in the cleaning liquid 17 is lower than the concentration of contaminants in the cleaning liquid 16.
  • the contaminant concentration is low and the cleanness is high, and the sheet-like material is sequentially washed with the cleaning liquid.
  • the average flow rate of the cleaning liquid can be obtained by dividing the amount of cleaning liquid supplied per unit time by the sectional area of the slit of the cleaning liquid supply nozzle.
  • the viscosity of the cleaning liquid is preferably lOOmPa's or less. If the viscosity of the cleaning liquid is 10 OmPa's or less, mixing of the upstream side and the downstream side on the sheet can be suppressed, and contaminants can be easily removed.
  • an organic solvent, alcohols, pure water, and the like such as solubility and wettability with the sheet material are appropriately selected depending on the contaminants deposited on the sheet material. Those having the above viscosity are preferable.
  • the organic solvent include toluene and acetone
  • examples of alcohols include ethanol and isopropyl alcohol.
  • the cleaning liquid may contain an additive such as a surfactant. When a plurality of cleaning liquid supply nozzles are provided, different cleaning liquids can be used from the respective cleaning liquid supply nozzles.
  • the cleaning liquid used for cleaning the contaminants dissolved in water is more cost effective and easier to process the waste liquid. From the viewpoint of preventing cleaning spots after cleaning, which is preferable to use pure water. Pure water having an electric power of 2 SZcm or less is preferable.
  • conductivity refers to the magnitude of the current that flows when a charge is applied to a conductor of unit length and unit area
  • SZcm is a distance of 1 cm between two electrodes with a cross-sectional area of lcm2. Shows the reciprocal of the resistance when!
  • the upstream gas nozzle and the downstream gas nozzle provided on the upstream side and the downstream side of the cleaning liquid supply nozzle are arranged on the upstream side and the downstream side of the cleaning liquid supply nozzle in the vertically downward direction orthogonal to the traveling direction of the sheet-like material.
  • the gas flow and the downstream gas flow are ejected respectively.
  • the upstream gas flow acts as a wall that inhibits the cleaning liquid from flowing upstream
  • the downstream gas flow acts as a wall that inhibits the cleaning liquid from flowing downstream.
  • These gas nozzles have a slit-shaped opening, and a slit type in which the opening is arranged to face the width direction of the sheet-like material is preferable.
  • This pair of gas flows defines a fixed area of the sheet-like object cleaning area, and the surface of the sheet-like object sequentially conveyed to the cleaning area is cleaned.
  • the clearance between the gas nozzle and the sheet can be appropriately selected depending on the nozzle type and the like. If the clearance is too narrow, there is a risk of contact with the sheet material and scratching the sheet material. On the other hand, if the clearance is too wide, the supply gas pressure must be set high, which is disadvantageous in terms of cost. ⁇ 50mm is preferred.
  • the interval at which these gas nozzles are provided depends on the required cleaning time and the cleaning liquid supply nozzle.
  • the number can be appropriately selected in consideration of the traveling speed of the sheet.
  • the cleaning time for the sheet-like material can be selected according to the dissolution rate for dissolving the contaminants deposited on the sheet-like material from the type, concentration, and supply amount of the cleaning solution used.
  • the cleaning distance in the length direction of the sheet-like material, that is, the gas nozzle interval can be determined by multiplying the necessary cleaning time by the traveling speed of the sheet-like material. However, if the gas nozzle interval is set long, foreign matters such as dust existing in the atmosphere will be mixed into the cleaning liquid. Conversely, the traveling speed of the sheet-like material can be adjusted by the interval at which the gas nozzle is provided.
  • the cleaning liquid remaining on the sheet-like material is removed, so that the gas nozzle interval is preferably the same as the gas flow width formed by the movable gas nozzle.
  • the gas nozzle interval can be set to 500 to 1500 mm, for example, when the traveling speed of the sheet is 1.5 mZmin and there are two cleaning liquid supply nozzles, and 700 to 3000 mm, etc., when there are two cleaning liquid supply nozzles. can do.
  • the pressure of the gas flow ejected from these gas nozzles is preferably set within a range in which the cleaning liquid splash does not occur.
  • the gas supply amount can be selected depending on the cleaning liquid removal drying property, the gas nozzle type, and the clearance between the gas nozzle and the sheet-like material. For example, it can be 0.5 to 5 Nm 3 Zmin with respect to the gas nozzle length lm.
  • the gas species to be used include air and inert gas, and an inert gas typified by nitrogen is preferable if the sheet-like material dislikes oxygen.
  • a movable gas nozzle 14 is provided between the upstream gas nozzle 4 and the downstream gas nozzle 5.
  • the shape of the movable gas nozzle is not limited as long as it can eject a gas flow that removes the cleaning liquid remaining on the sheet-like material.
  • the movable gas nozzle has a slit-like opening that can form a gas flow from the upstream gas nozzle to the downstream gas nozzle, and has good removal and drying properties of the cleaning liquid.
  • the same slit type as the side gas nozzle 5 is preferred!
  • the clearance between the movable gas nozzle 14 and the sheet-like material can be appropriately selected depending on the nozzle type and the like. If the clearance is too narrow, there is a possibility of contact with the sheet-like material, and if it is too wide, it is necessary to set a high compression gas pressure for gas flow formation.
  • Such a movable gas nozzle moves in a horizontal direction perpendicular to the traveling direction of the sheet-like material. It is preferable that the cleaning liquid can move in the horizontal direction perpendicular to the traveling direction of the sheet-like material, and the cleaning liquid remaining on the sheet-like material can be dropped at the side edge of the sheet-like material.
  • the type of gas ejected from such a movable gas nozzle can include inert gas such as nitrogen, and the like, and is the same type of gas that is ejected from the upstream gas nozzle and the downstream gas nozzle.
  • the amount of gas supplied from the movable gas nozzle can remove and dry the residual cleaning liquid, and the shape of the movable gas nozzle can prevent the cleaning liquid from splashing due to the gas pressure. It can be selected as appropriate depending on the alignment.
  • the amount of gas supplied from the movable gas nozzle is preferably 0.5 to 5 Nm 3 Zmin with respect to the movable gas nozzle length lm.
  • the cleaning liquid is prevented from scattering outside a fixed region partitioned by a pair of gas flows, and the cleaning liquid discharged from the cleaning liquid supply nozzle
  • a partition plate for preventing the cleaning liquid from scattering over the entire width of the sheet.
  • the cleaning liquid splash prevention partition plate prevents the cleaning liquid from splashing outside a certain area partitioned by the gas flow, and the upper part of the upstream gas nozzle, the upper part of the downstream gas nozzle, and the supply of these gas nozzles and the cleaning liquid. It is preferable to provide the entire width of the sheet-like material at at least one location selected between the nozzle and the nozzle. As shown in Fig.
  • the cleaning liquid splash prevention partition plates 18 and 19 installed at the upper part of the upstream gas nozzle and the upper part of the downstream gas nozzle are cleaning plates that prevent the cleaning liquid splashed from the surface of the sheet-like material from splashing. It can be provided in a range of, for example, 0.3 to 3 mm, which is thin from the point of reducing the weight.
  • the cleaning liquid generated from the cleaning liquid discharged from the cleaning liquid supply nozzle is in direct contact with the gas flow ejected from the gas nozzle, or the cleaning liquid supplied from the cleaning liquid supply nozzle is reflected on the sheet-like material.
  • the cleaning liquid splash prevention partition plates 20 and 2 (between the upstream gas nozzle 4 and the upstream upstream cleaning liquid supply nozzle, and between the downstream downstream cleaning liquid supply nozzle and the downstream gas nozzle 5 ( A partition for preventing splashing of washing liquid 20 and 20 is provided over the entire width of the sheet-like material, and may be larger than the width of the sheet-like material.
  • the cleaning liquid splash prevention partition plates 18, 19, 20, and 2CT may be made of any material such as resin and metal, but those having resistance to the cleaning liquid are preferred. Viewpoint power such as weight and rigidity can be selected as appropriate.
  • the sheet-like cleaning method of the present invention includes a downstream gas nozzle and an upstream gas nozzle provided on a sheet that runs continuously in a substantially horizontal direction, each vertically downward perpendicular to the running direction of the sheet-like material.
  • the upstream gas flow and the downstream gas flow are ejected, and the cleaning liquid is supplied onto a sheet of material in a certain area partitioned by the pair of gas flows, and the upstream gas flow and the downstream gas flow are supplied.
  • the supply of the cleaning liquid is stopped and provided between the upstream gas nozzle and the downstream gas nozzle. If the cleaning liquid remaining on the sheet-like material is removed by ejecting a gas flow from the movable gas nozzle, it is not particularly limited! It is preferable to use the sheet-like material cleaning apparatus of the present invention. Better Yes.
  • the cleaning liquid is supplied onto the continuously running sheet-like material from, for example, a slit-like opening of the cleaning liquid supply nozzle.
  • a vertically downward upstream gas flow perpendicular to the traveling direction of the sheet-like material is ejected from, for example, a slit-shaped opening of the upstream gas nozzle provided on the upstream side of the cleaning liquid supply nozzle, and this upstream gas flow is It becomes a wall and prevents the cleaning liquid from flowing upstream.
  • a downstream gas flow perpendicular to the traveling direction of the sheet-like material is ejected from a downstream gas nozzle provided on the downstream side of the cleaning liquid supply nozzle to block the cleaning liquid from flowing downstream from this.
  • the amount of cleaning liquid supplied on the sheet-like material that exceeds the amount that can be deposited on the sheet-like material is deposited on the sheet-like material while the side edge force of the sheet-like material falls sequentially and is collected in the cleaning liquid receiver. Renew the cleaning solution.
  • Fig. 3 shows the sluice withdrawn or removed between the upstream gas nozzle and the downstream gas nozzle so that the movable gas nozzle is not hindered from moving, and then the gas flow is ejected from the movable gas nozzle.
  • the gas is moved in the horizontal direction perpendicular to the traveling direction of the sheet material between the upstream gas nozzle and the downstream gas nozzle.
  • the cleaning liquid remaining on the sheet-like material between the upstream gas nozzle and the downstream gas nozzle is moved on the sheet-like material, and the side edge force of the sheet-like material is dropped and removed. From the fact that the movable gas nozzle moves across the sheet-like material, the residual cleaning liquid on the sheet-like material between the upstream gas nozzle and the downstream gas nozzle is removed, and the occurrence of watermarks and the like can be suppressed, and the appearance of the sheet-like material Can be prevented from being damaged.
  • the moving speed of the movable gas nozzle is preferably equal to or higher than the conveying speed of the sheet-like material in order to prevent cleaning liquid contamination due to a long stay of the remaining cleaning liquid.
  • the sheet-like material Prior to removing the cleaning liquid remaining on the sheet-like material by ejecting the movable gas nozzle force gas flow, the sheet-like material is run and a gas flow is ejected from the downstream gas nozzle to cause the gas-like material to flow from above.
  • the cleaning liquid may be removed.
  • the upstream gas flow starts to be ejected from the upstream gas nozzle onto the continuously running sheet-like material. It is preferable to start cleaning with the cleaning liquid after the part of the sheet-like material that has started to eject passes under the downstream gas nozzle and removes the foreign material on the sheet-like material. By removing the foreign matter prior to cleaning the sheet-like material with the cleaning liquid, cleaning can be performed without causing even a thin watermark appearing at the cleaning start point.
  • another sheet-like cleaning method of the present invention is a sheet that travels substantially horizontally continuously.
  • An upstream gas nozzle 4 and a downstream gas nozzle that are provided on the G-shaped object and that form a vertically downward upstream gas flow and a downstream gas flow that divide a predetermined region with respect to the traveling direction of the sheet-like material.
  • a cleaning liquid with a viscosity of lOOmPa's or less is supplied from two or more cleaning liquid supply nozzles 6 and 6 that are installed sequentially along the direction, with an average flow velocity in the range of 1 to LOmZs, and the cleaning liquid supplied from the cleaning liquid supply nozzle is supplied.
  • the method for performing migration to cleaning the cleaning liquid is not particularly limited, it is preferably carried out by using the cleaning apparatus of the sheet of the present invention.
  • the movable gas nozzle that ejects the gas flow is moved in a direction perpendicular to the traveling direction of the sheet-like material to remove the cleaning liquid remaining on the sheet-like material between the upstream gas nozzle and the downstream gas nozzle. May be.
  • the method for producing a plate-like polymer of the present invention is not particularly limited as long as the method for washing a sheet-like material of the present invention is used.
  • a method for producing the plate-like polymer of the present invention specifically, a pair of opposing belt surfaces of two endless belts provided facing each other running at the same speed in the same direction, and the pair of A polymeric raw material is supplied from one end to a space surrounded by a pair of endless gaskets that run between the opposite ends of the opposite belt surface, and the polymerizable raw material is fed into the heating zone by running the belt.
  • a method for producing a plate-like polymer can be mentioned in which the polymerizable raw materials are sequentially polymerized and the plate-like polymer is removed from the other end.
  • a continuous plate-making apparatus for producing a plate-like polymer can be suitably used.
  • a continuous plate making apparatus for example, at least one of two opposite endless belt surfaces polished by a mirror surface made of a stainless steel plate having a thickness of 1. Omm or more is formed into the above sheet-like shape.
  • the plate-shaped product manufacturing apparatus includes two stainless endless belts 1 and ⁇ having a total length of 100 m, a thickness of 1.5 mm, and a width of 1.5 m, respectively. 3 between the main pulley 2 'and the pulley ⁇ . Endless belts 1 and 1 are each fed endlessly with a tension of 3kgZmm 2 due to the hydraulic pressure between main pulley 2 and pulley 3, and between main pulley 2 'and pulley 3'. Endless belt 1: A pair of polysulphated bull gaskets 9 are sandwiched between both ends of T, and the gaskets 9 travel along the endless belt as the endless belt travels.
  • the opposite surfaces of the endless belt 1 and ⁇ run from left to right at a constant speed.
  • a nozzle 11 is provided at a position immediately before the left endless belt 1 and ⁇ overlap each other, and a pump 10 for supplying the liquid polymerizable raw material to the endless belt ⁇ through the nozzle 11 is provided.
  • a 48m heating zone 12 with a hot water spray at 80 ° C, 12 and a 15m heat treatment section 13, 13 'with a far infrared heater are provided.
  • a cleaning device 8 was installed on the upper left side of the endless belt 1 in Fig. 1 as follows.
  • the upstream side gas nozzle 4 has a slit with a width direction of 1.6 m and a slit width of 0.1 mm.
  • An upstream gas nozzle is installed at a position 15 mm away from the surface of the endless belt 1 so that the angle of the gas flow to be ejected is vertically downward with respect to the endless belt 1.
  • the air was ejected from this gas nozzle at a flow rate of 1.2 Nm 3 Zmin.
  • the downstream gas nozzle 5 was the same as the upstream gas nozzle 4.
  • Upstream gas nozzle 4 forces 700m downstream, at a position 10mm away from the surface of endless belt 1, set the downstream gas nozzle so that the angle of the gas flow is vertically downward with respect to endless belt 1. It was installed and air was ejected from this gas nozzle at a flow rate of 1.8 Nm 3 / min.
  • the cleaning liquid supply nozzle 6 used was a wide-angle flat spray type with an elliptical opening, and pure water was used as the cleaning liquid.
  • the cleaning liquid was supplied at a flow rate of 30 LZmin (average flow rate 3. lmZs), and the running speed of the endless belt 1 was 1.4 mZmin.
  • a movable gas nozzle 14 is disposed between the upstream gas nozzle 4 and the downstream gas nozzle 5.
  • the movable gas nozzle 14 was a slit type nozzle having a width direction of 0.65 m and a slit width of 0.1 mm. Also, the tally balance between the movable gas nozzle 7 and the endless belt during operation is set to 15 mm.
  • the endless belt is cleaned by simultaneously starting the supply of air from the upstream gas nozzle 4, the supply of pure water from the cleaning liquid supply nozzle 6, and the supply of air from the downstream gas nozzle 5. At the same time, plate products were manufactured.
  • the cleaning liquid discharged from the cleaning liquid supply nozzle 6 was affected by the air flow from the gas nozzles 4 and 5, and turbulent flow occurred.
  • a thin white turbidity due to dissolution of contaminants on the endless belt was confirmed.
  • the turbidity was confirmed to move to the downstream side of the cleaning liquid supply nozzle 6.
  • gas is jetted from four upstream gas nozzles.
  • the cleaning liquid was supplied onto the belt from the cleaning liquid supply nozzle 6 after the gas was ejected from the downstream gas nozzle 5 two minutes later, The manufacture of plate products was performed at the same time.
  • One slit nozzle that is the same as the upstream gas nozzle as the cleaning liquid supply nozzle is positioned 20 mm from the surface of the endless belt between the upstream gas nozzle and the downstream gas nozzle, and the cleaning liquid is vertically downward with respect to the endless belt 1.
  • the endless belt was washed and the plate-shaped product was manufactured at the same time as in Example 2 except that it was installed to supply.
  • the cleaning liquid was stably supplied from the cleaning liquid supply nozzle in the form of a curtain, and no leakage of the cleaning liquid was observed outside the air flow from the gas nozzle.
  • On the endless belt on the downstream side of the downstream gas nozzle no visible cleaning spots were observed.
  • the distance between the upstream gas nozzle and the downstream gas nozzle is 1300 mm, and two cleaning liquid supply nozzles of the same type as those used in Example 3 are respectively 400 mm upstream from the upstream gas nozzle and 400 mm upstream from the downstream gas nozzle.
  • the pure water having a conductivity of 2 / z SZcm was supplied from the cleaning liquid supply nozzle at a flow rate of 30 LZmin (average flow rate of 3. lmZs).
  • the movable gas nozzle used was a slit type with a width of 1.25m and a slit width of 0.1mm.
  • the clearance between the movable gas nozzle and the endless belt during operation is set to 15 mm, and the air supply The supply amount was 2.4 Nm 3 Zmin.
  • the endless belt was washed and the plate-shaped product was simultaneously manufactured in the same manner as in Example 2.
  • the cleaning liquid was stably supplied from the cleaning liquid supply nozzle in the form of a curtain, and no leakage of the cleaning liquid was observed outside the gas nozzle. Force that confirms thin white turbidity in the cleaning liquid on the endless belt upstream of the cleaning liquid supply nozzle No turbidity was observed in the cleaning liquid downstream.
  • the partition plates 18 and 19 are made of stainless steel having a width of 1.6 m, a height of lm, and a thickness of 2 mm, respectively.
  • the partition plates 18 and 19 are installed above the gas nozzles 4 and 5 so as to be perpendicular to the endless belt 1.
  • the partition plates 20 and 20 mm are made of stainless steel with a width of 1.6 m, a height of 0.2 m, and a thickness of 2 mm, and are 10 mm away from the surface of the endless belt upstream of the cleaning liquid supply nozzle 6 and downstream of the cleaning liquid supply nozzle ⁇ . At the position, the upper part of each partition plate was installed with the inclination of 0.1 lm toward the cleaning liquid supply nozzle.
  • the cleaning liquid is more stably in the shape of a cartridge. In this way, it was supplied to the endless belt and collided with the cleaning liquid on the endless belt, and the generation of water droplets was suppressed. The splashed water droplets did not scatter largely around 20 or 20 partitions. There was no leakage of cleaning liquid outside the air flow from the gas nozzle. Force that thin white turbidity was observed in the cleaning liquid on the endless belt upstream of the cleaning liquid supply nozzle. No turbidity was observed in the downstream cleaning liquid.
  • Example 1 Cleaning was performed using the apparatus and conditions of Example 1 except that the movable gas nozzle 14 was arranged.
  • Cooling / condensation determination is performed by cooling the product plate of the evaluation object in advance and then returning it to a room temperature room temperature to cause condensation on the surface of the product plate. The surface clean state was evaluated.
  • the state of the cleaning liquid splash is the area where the cleaning liquid is scattered by the air from the gas nozzles 4 and 5 during the cleaning operation, the cleaning liquid is sprayed from the cleaning liquid supply nozzle, and the scattered cleaning liquid is in the area of the gas nozzles 4 and 5.
  • a total judgment was made based on the amount adhering to the outside. There is a difference in cleanliness of the scattered cleaning liquid, and this determination cannot be used as it is for product evaluation. It can be used as an index for the operational stability of the power cleaning device.
  • Example 1 to 6 the product evaluation after the cleaning was improved as compared with that before the cleaning.
  • white contamination was visually observed on the entire surface, not on the spots, and the cleaning spots in the cooling condensation determination were not recognized.
  • On the product plate 1 no contamination is seen in the visual judgment except for the cleaning start point, but in the cooling dew condensation judgment, cleaning droplets adhere to the dry belt due to liquid splashing during cleaning, and the cleaning liquid Drops of water and traces of water drainage were confirmed due to the contamination that had accumulated on the belt downstream of the supply nozzle.
  • product plate 2 there was no watermark at the cleaning start point, and no contamination was observed in the visual judgment.
  • the cleaning liquid adhering to the endless belt dries at the end of cleaning, forming a watermark. For this reason, some visual judgments and product evaluations were lowered. Even if there was no problem with the visual judgment, in the cooling and condensation judgment, water droplet traces were confirmed in all samples due to the cleaning liquid adhering to the endless belt due to the scattering of the cleaning liquid.
  • the apparatus and method for cleaning a sheet-like material according to the present invention is suitably used for washing a sheet-like material, particularly for washing a sheet-like material such as an endless belt used for producing a plate-like material by polymerizing a polymerizable raw material. It is useful for the production of a resinous resin board having an excellent appearance.

Landscapes

  • Cleaning By Liquid Or Steam (AREA)
  • Cleaning In General (AREA)

Abstract

Procédé de nettoyage d'un objet de type feuille ne laissant aucune trace de liquide de nettoyage sur un objet de type feuille en mouvement continu, ni aucune tâche résiduelle de liquide de nettoyage, que l'on appelle trace de séchage, afin d'éviter ainsi toute détérioration de l'aspect de l'objet de type feuille ; appareil de nettoyage pour une utilisation dans le procédé ; et processus pour fabriquer un polymère de type plaque. L'appareil de nettoyage d'un objet de type feuille décrit comprend une buse à gaz de côté amont (4) et une buse à gaz de côté aval (5) disposées au-dessus de l'objet de type feuille (1) en mouvement continu sensiblement dans la direction horizontale et capables de produire un flux gazeux de côté amont et un flux gazeux de côté aval, respectivement, circulant vers le bas dans la direction verticale orthogonale à la direction de déplacement de l'objet de type feuille, et comprenant une buse d'alimentation en liquide de nettoyage (6) pour alimenter l'objet de type feuille en liquide de nettoyage entre le flux gazeux de côté amont et le flux gazeux de côté aval, une buse à gaz mobile (14) étant ajoutée pour produire un flux gazeux afin de retirer tout liquide de nettoyage restant sur l'objet de type feuille entre la buse à gaz de côté amont et la buse à gaz de côté aval.
PCT/JP2006/318384 2006-09-15 2006-09-15 Appareil de nettoyage d'un objet de type feuille, procédé de nettoyage d'un objet de type feuille à l'aide de celui-ci et processus pour fabriquer un polymère de type plaque WO2008032401A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2006/318384 WO2008032401A1 (fr) 2006-09-15 2006-09-15 Appareil de nettoyage d'un objet de type feuille, procédé de nettoyage d'un objet de type feuille à l'aide de celui-ci et processus pour fabriquer un polymère de type plaque

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2006/318384 WO2008032401A1 (fr) 2006-09-15 2006-09-15 Appareil de nettoyage d'un objet de type feuille, procédé de nettoyage d'un objet de type feuille à l'aide de celui-ci et processus pour fabriquer un polymère de type plaque

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WO2008032401A1 true WO2008032401A1 (fr) 2008-03-20

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02136225A (ja) * 1988-11-16 1990-05-24 Ishikawajima Harima Heavy Ind Co Ltd Ｆｒｐ平板製造装置
JPH10180205A (ja) * 1996-12-26 1998-07-07 Fujitsu Ltd 基板処理方法及び処理装置
JP2001108977A (ja) * 1999-10-13 2001-04-20 Matsushita Electric Ind Co Ltd 液晶表示装置の製造装置およびその方法
JP2004268288A (ja) * 2003-03-05 2004-09-30 Mitsubishi Rayon Co Ltd 板状製品の製造装置および製造方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02136225A (ja) * 1988-11-16 1990-05-24 Ishikawajima Harima Heavy Ind Co Ltd Ｆｒｐ平板製造装置
JPH10180205A (ja) * 1996-12-26 1998-07-07 Fujitsu Ltd 基板処理方法及び処理装置
JP2001108977A (ja) * 1999-10-13 2001-04-20 Matsushita Electric Ind Co Ltd 液晶表示装置の製造装置およびその方法
JP2004268288A (ja) * 2003-03-05 2004-09-30 Mitsubishi Rayon Co Ltd 板状製品の製造装置および製造方法

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