WO2011024637A1 - Appareil et procédé de couchage à nappe - Google Patents

Appareil et procédé de couchage à nappe Download PDF

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Publication number
WO2011024637A1
WO2011024637A1 PCT/JP2010/063495 JP2010063495W WO2011024637A1 WO 2011024637 A1 WO2011024637 A1 WO 2011024637A1 JP 2010063495 W JP2010063495 W JP 2010063495W WO 2011024637 A1 WO2011024637 A1 WO 2011024637A1
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WO
WIPO (PCT)
Prior art keywords
curtain
paint
temperature
head
curtain head
Prior art date
Application number
PCT/JP2010/063495
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English (en)
Japanese (ja)
Inventor
森田　博文
明男 平野
弘幸 河野
敏弘 片野
Original Assignee
ボイス パテント ゲーエムベーハー
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 ボイス パテント ゲーエムベーハー filed Critical ボイス パテント ゲーエムベーハー
Priority to CN201080038213.3A priority Critical patent/CN102574147B/zh
Priority to EP10811687.2A priority patent/EP2474369B1/fr
Publication of WO2011024637A1 publication Critical patent/WO2011024637A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/30—Processes for applying liquids or other fluent materials performed by gravity only, i.e. flow coating
    • B05D1/305—Curtain coating
    • 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
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
    • 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
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
    • B05C11/1039—Recovery of excess liquid or other fluent material; Controlling means therefor
    • 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
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
    • B05C11/1042—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material provided with means for heating or cooling the liquid or other fluent material in the supplying means upstream of the applying apparatus
    • 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
    • B05C15/00—Enclosures for apparatus; Booths
    • 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
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/005—Curtain coaters
    • 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
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/007—Slide-hopper coaters, i.e. apparatus in which the liquid or other fluent material flows freely on an inclined surface before contacting the work
    • B05C5/008—Slide-hopper curtain coaters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2252/00—Sheets
    • B05D2252/02—Sheets of indefinite length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/04—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases
    • B05D3/0493—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases using vacuum

Definitions

  • the present invention relates to a curtain coating apparatus and a curtain coating method for supplying a paint curtain film to the surface of a web to be conveyed and applying the paint to the surface of the web.
  • a thermal paper by applying a thermal paint to the surface of a web (base material) such as a coated base paper
  • a curtain head that is a chamber with a nozzle for forming a curtain film of the paint.
  • a curtain coating apparatus configured to apply a paint to the surface of the web by supplying a curtain film of the paint to the surface of the web (see, for example, Patent Document 1).
  • FIG. 5 shows an example of a conventional curtain coating apparatus.
  • the curtain coating apparatus A has a supply tank Ts for storing the paint C supplied through the pipe h, and the supply tank Ts
  • the stored paint C is supplied to the vacuum type defoaming device Da via the pipe a provided with the pump P1, and the paint C subjected to the defoaming process in the vacuum type defoaming device is supplied to the pump P2. It is supplied to the curtain head H via the interposed piping b.
  • the curtain head H is arranged above the web W to be transported, and includes a head portion Hh and a nozzle portion Hn, as shown in FIG. 6, and the head portion Hh has a paint supply path Hp along the longitudinal direction.
  • the nozzle portion Hn is formed with a slot Hs communicating with the paint supply path Hp and opened downward along the longitudinal direction.
  • the paint C supplied to the paint supply path Hp of the curtain head H forms a curtain curtain V developed in the width direction of the web W by passing through the slot Hs, and is conveyed as shown by an arrow F.
  • the curtain film V of the paint C from the curtain head H to the surface of W, the paint C is continuously applied to the surface of the web W.
  • FIG. 7 shows a curtain head of another form, and this curtain head H ′ includes a head portion Hh ′ and a nozzle portion Hn ′, and a paint supply path along the longitudinal direction of the head portion Hh ′.
  • Hp ′ is extended, and a slot Hs ′ communicating with the paint supply path Hp ′ and opened upward is formed in the nozzle portion Hn ′ along the longitudinal direction.
  • the paint C supplied to the paint supply path Hp ′ of the curtain head H ′ passes through the slot Hs ′ and then flows down the guide surface Hg ′, thereby forming a curtain curtain V developed in the width direction of the web W. Then, the curtain film V of the paint C is supplied from the curtain head H ′ to the surface of the web W conveyed as indicated by the arrow F, whereby the paint C is continuously applied to the surface of the web W.
  • a return pan I is installed below the web W.
  • the curtain head H and the return pan I are connected to the web W. It is accommodated in the inside of the heat insulation room R installed along the conveyance line.
  • An air duct Ad is installed in the upper part of the heat insulation room R constructed from a heat insulating material.
  • the cool air from the air conditioner (air conditioner) Ac is sent to the air duct Ad by the blower fan Af,
  • the curtain head H is cooled by the blown-out cool air (arrows w, w).
  • the paint C stored in the return tank Tr is supplied to a simple centrifugal defoaming device Db via a pipe e provided with a pump P3. After being defoamed in the centrifugal defoaming device Db, It is sent to the supply tank Ts through the pipe f, and the circulation of the supply tank Ts ⁇ vacuum deaerator Da ⁇ curtain head H ⁇ return pan I ⁇ return tank Tr ⁇ centrifugal deaerator Db ⁇ supply tank Ts repeat.
  • the curtain head H accommodated in the heat insulation room R is cooled by an air conditioner (air conditioner) Ac.
  • air conditioner air conditioner
  • the curtain head H is heated to about 30 ° C. to 40 ° C. when the heat insulation room R is not cooled. It will be warmed.
  • the temperature of the paint C supplied to the curtain head H is usually around 20 ° C., which is lower than the ambient temperature, through the vacuum defoaming device Da.
  • the temperature of the paint C after defoaming is about 20 ° C.
  • the temperature of the paint C after defoaming is lower than that before defoaming due to a cooling phenomenon caused by adiabatic expansion during defoaming.
  • the curtain head H is not cooled, the paint C of about 20 ° C. is supplied to the curtain head H of about 30 ° C. to 40 ° C., which is caused by the temperature difference from the paint C.
  • the curtain head H is thermally deformed.
  • the change in the width of the slot Hs in the nozzle portion Hn causes the flow rate of the paint C in the curtain curtain V to change over time, or to become uneven in the width direction of the web W.
  • the coating amount (the amount of the coating material C supplied to the surface of the web W) fluctuates, and this causes a significant decrease in coating quality.
  • the curtain head H is accommodated in the heat insulation room R and cooled by the air conditioner (air conditioner) Ac, so that the temperatures of the curtain head H and the paint C are equal.
  • the curtain head H in particular, the slot Hs in the nozzle portion Hn is prevented from being deformed in advance, and the deterioration of the coating quality is suppressed.
  • the cool air is supplied to the inside of the heat insulation room R in order to cool the curtain head H accommodated in the heat insulation room R.
  • V was swung and this caused poor coating on the web W.
  • the air supplied into the heat insulation room R is cooled, or the air in the heat insulation room R is dehumidified in order to prevent condensation on the curtain head H.
  • various related facilities are also required, resulting in inconvenience that requires a large capital investment. could not escape.
  • the present invention can achieve a reduction in energy consumption related to coating work and a significant reduction in equipment investment, and a curtain coating apparatus capable of achieving an improvement in coating quality, and
  • the purpose is to provide a curtain coating method.
  • the curtain coating apparatus supplies the paint applied to the vacuum defoaming apparatus to the curtain head, and the curtain film of the paint formed by the curtain head is conveyed.
  • the temperature of the paint flowing through the pipe is supplied to the pipe for supplying the paint from the vacuum deaerator to the curtain head. It is characterized in that a heating device for heating to a temperature approximate to that of the curtain head is provided.
  • the curtain coating apparatus according to the invention of claim 2 is the curtain coating apparatus according to the invention of claim 1, wherein the temperature of the paint heated by the heating device and supplied to the curtain head is changed to the temperature of the curtain head. On the other hand, it is characterized by being set within a temperature range of ⁇ 5 ° C.
  • a curtain coating apparatus is the curtain coating apparatus according to the first aspect of the present invention, wherein a temperature sensor that detects the temperature of the curtain head and a temperature detected by the temperature sensor are supplied to the curtain head. And a control device for controlling the operation of the heating device so as to heat the temperature of the paint to be approximate to that of the curtain head.
  • a curtain coating method in which a paint applied to a vacuum deaerator is supplied to a curtain head, and a curtain film of the paint formed by the curtain head is supplied to the surface of a web being conveyed.
  • the paint supplied to the curtain head from the vacuum defoaming device is heated to a temperature approximate to the curtain head by a heating device. It is said.
  • the curtain coating method according to the invention of claim 5 is the curtain coating method according to claim 4, wherein the temperature of the paint heated by the heating device and supplied to the curtain head is changed to the temperature of the curtain head. On the other hand, it is characterized by being set within a temperature range of ⁇ 5 ° C.
  • the curtain coating method according to the invention of claim 6 is the curtain coating method according to the invention of claim 4, wherein the temperature of the paint supplied to the curtain head is approximated to the curtain head based on the temperature of the curtain head. It is characterized by controlling the operation of the heating device so as to obtain a temperature.
  • the temperature of the paint flowing through the pipe is approximated to that of the curtain head by a heating device provided in the pipe for supplying the paint from the vacuum deaerator to the curtain head.
  • a heating device provided in the pipe for supplying the paint from the vacuum deaerator to the curtain head.
  • the temperature difference between the curtain head and the paint can be suppressed without forcibly cooling the curtain head.
  • the temperature difference between the curtain head and the paint is suppressed, and the curtain film of the paint is not shaken by the air blow accompanying cooling, so that it is possible to achieve a significant improvement in coating quality.
  • various facilities for cooling the curtain head are no longer necessary, and it is possible to reduce the capital investment associated with the installation of the cooling facility, and at the same time achieve a significant reduction in energy consumption associated with the coating work. It becomes possible.
  • the temperature of the paint heated by the heating device and supplied to the curtain head is set within a temperature range of ⁇ 5 ° C. with respect to the temperature of the curtain head.
  • the operation of the heating device is controlled by the control device based on the temperature of the curtain head detected by the temperature sensor, and the temperature of the paint is added to a temperature approximate to that of the curtain head.
  • the temperature difference between the curtain head and the paint can be kept as small as possible, thus preventing the curtain head from being deformed due to the temperature difference and achieving a significant improvement in coating quality. It becomes possible to do.
  • the temperature of the paint flowing through the pipe is approximated to that of the curtain head by a heating device provided in the pipe for supplying the paint to the curtain head from the vacuum deaerator.
  • a heating device provided in the pipe for supplying the paint to the curtain head from the vacuum deaerator.
  • the temperature difference between the curtain head and the paint can be suppressed as much as possible without forcibly cooling the curtain head.
  • the temperature difference between the curtain head and the paint is suppressed, and the curtain film of the paint is not shaken by the air blown by cooling, so that it is possible to achieve a significant improvement in coating quality.
  • various facilities for cooling the curtain head are not necessary, and it is possible to reduce the capital investment accompanying the installation of the cooling facility, and also achieve a significant reduction in energy consumption accompanying the coating work. Is possible.
  • the temperature of the paint heated by the heating device and supplied to the curtain head is set within a temperature range of ⁇ 5 ° C. with respect to the temperature of the curtain head.
  • the operation of the heating device is controlled based on the temperature of the curtain head so that the temperature of the paint supplied to the curtain head becomes a temperature approximate to the curtain head. Therefore, the temperature difference between the curtain head and the paint can be suppressed as small as possible, so that the curtain head can be prevented from being deformed due to the temperature difference, and the coating quality can be greatly improved. Is possible.
  • FIG. 1 shows a first embodiment of a curtain coating apparatus according to the present invention.
  • the curtain coating apparatus 1 of this embodiment applies a heat-sensitive paint to the surface of a web (base material) such as a coated base paper. It is an apparatus that is used for the manufacture of heat-sensitive paper.
  • the curtain coating apparatus 1 has a supply tank 2 for storing the paint C supplied via the pipe 1a, and the paint C stored in the supply tank 2 passes through the pipe 1b provided with the pump P1.
  • the paint C supplied to the vacuum defoaming device 3 and subjected to the defoaming process in the vacuum defoaming device 3 passes through the pump P2 and the piping 1c in which the heating device 10 described later is interposed. Supplied to the curtain head 4.
  • the curtain head 4 is disposed above the web W to be transported, and includes a head portion and a nozzle portion (not shown).
  • a paint supply path extends along the longitudinal direction of the head portion, and the nozzle The part is formed with a slot in the longitudinal direction so as to communicate with the paint supply path and is not different from the conventional curtain head H shown in FIG.
  • the paint C supplied to the curtain head 4 forms a curtain curtain V developed in the width direction of the web W, and is conveyed, like the paint C supplied to the conventional curtain head H shown in FIG.
  • the paint C is continuously applied to the surface of the web W.
  • the curtain head 4 is disposed above the web W, while the return pan 5 is installed below the web W.
  • the curtain head 4 and the return pan 5 are arranged on the web W. It is accommodated in the room 6 installed along the transfer line.
  • the room 6 is installed to prevent the blowing of wind from the outside so that the curtain film V of the paint formed in the curtain head 4 does not sway.
  • an inexpensive material such as a vinyl sheet is used. Because of its simple structure, capital investment is extremely inexpensive.
  • the paint C stored in the return tank 7 is supplied to a simple centrifugal defoaming device 8 through a pipe 1e with a pump P3 interposed therein, and after being defoamed in the centrifugal defoaming device 8, It is sent to the supply tank 2 through the pipe 1 f, and the circulation of the supply tank 2 ⁇ the vacuum deaerator 3 ⁇ the curtain head 4 ⁇ the return pan 5 ⁇ the return tank 7 ⁇ the centrifugal deaerator 8 ⁇ the supply tank 2 is hereinafter performed. repeat.
  • the curtain head 4 is heated to about 30 ° C. to 40 ° C.
  • the paint C supplied from the vacuum degassing device 3 to the curtain head 4 through the pipe 1c is heated to a temperature approximate to that of the curtain head 4 by the heating device 10 installed in the pipe 1c. .
  • the heating device 10 heats the temperature of the paint C flowing through the pipe 1c to a temperature approximate to that of the curtain head 4, and specifically surrounds the pipe 1c with a jacket, By supplying a heat medium such as warm air or warm water into the jacket, the paint C is heated to an appropriate temperature.
  • the heating device 10 is configured to supply the heat medium around the spirally formed pipe 1c in order to increase the heat transfer area between the pipe 1c and the heat medium (warm air, hot water). It is also effective to do.
  • various configurations such as providing an electric heater or a lamp heater around the pipe 1c can be adopted in addition to using the warm air or hot water as described above. Of course.
  • the temperature difference between the paint C and the curtain head 4 is suppressed by heating the paint C supplied to the curtain head 4.
  • the thermal deformation of the curtain head 4 due to the temperature difference is prevented in advance, and the variation in the coating amount with respect to the web W can be suppressed, whereby the coating quality can be improved.
  • the coating C is heated to suppress the temperature difference from the curtain head 4, in other words, the conventional configuration of cooling the curtain head (see FIG. 5) is adopted. Therefore, since the temperature difference between the curtain head 4 and the paint C is suppressed, there is no problem that the curtain film V of the paint C is inadvertently shaken by the air blown by the cooling, and the coating quality is improved. Significant improvements can be achieved.
  • the curtain head 4 is not cooled. Therefore, as in the conventional curtain coating apparatus that cools the curtain head (see FIG. 5), Condensation that occurs on the surface of the curtain head due to condensation does not cause inconveniences such as a coating failure caused by dropping onto the web W being coated.
  • the heating device 10 of the present embodiment is compact and requires less heat than the conventional cooling device using cold air (see FIG. 5). It is possible to reduce the investment and achieve a significant reduction in energy consumption accompanying the coating work.
  • the paint C is heated to suppress the temperature difference from the curtain head 4, in other words, the paint curtain C is cooled because the conventional curtain coating apparatus cools the curtain head.
  • the viscosity of the coating C is lower than that of the conventional structure and the fluidity is good because the coating C is heated to about 35 ° C. Since it becomes a thing and grows smoothly, there exists an effect which coat quality improves significantly.
  • the actual temperature of the curtain head 4 to which the paint C is supplied is grasped by prior observation, and the temperature approximated to this actual temperature as much as possible. Desirably, it is extremely effective to heat the coating material C so as to be within a temperature range of ⁇ 5 ° C. with respect to the temperature of the curtain head 4.
  • the temperature of the paint C heated by the heating device 10 and supplied to the curtain head 4 is set within a temperature range of ⁇ 5 ° C. with respect to the temperature of the curtain head 4. And the temperature difference between the paint C and the paint C can be kept small, the deformation of the curtain head 4 due to the temperature difference can be prevented, and a significant improvement in coating quality can be achieved.
  • the temperature of the paint C supplied to the curtain head 4 when the temperature of the paint C is significantly higher than that of the curtain head 4, the dried and solidified paint C adheres to the nozzle portion and damages the curtain film V.
  • FIG. 2 shows a second embodiment of the curtain coating apparatus according to the present invention.
  • the curtain coating apparatus 1A of this embodiment is a paint C that has been subjected to defoaming treatment in a vacuum defoaming apparatus 3. Is supplied to the curtain head 4 through a pipe 1g provided with a pump P2, and the pipe 1g is formed in a spiral shape for the purpose of increasing the overall length.
  • the interior of the factory building where the curtain coating apparatus 1A is installed has an atmospheric temperature of about 30 ° C. to 40 ° C. because a heat source such as a dryer is used as described above.
  • the paint C supplied from the vacuum degassing device 3 to the curtain head 4 via the pipe 1g is heated by the atmospheric temperature in the factory building while circulating the pipe 1g formed in a spiral shape. It becomes.
  • the pipe 1g formed in a spiral shape as described above constitutes a heating device that uses the ambient temperature in the factory building as a heat source, and the paint C passes through the pipe 1g so that the paint C is in the same factory building. It will be heated to a temperature approximating that of the curtain head 4 exposed to the indoor ambient temperature.
  • the curtain coating apparatus 1A described above is basically the same as the curtain coating apparatus 1 of the first embodiment except for the pipe 1g formed in a spiral shape, the curtain coating apparatus 1 in FIG. Detailed description will be omitted by giving the same reference numerals as those in FIG. 1 to elements having the same functions.
  • the energy consumption related to the coating work is reduced, and the equipment investment is greatly increased. Reduction can be achieved and an improvement in coating quality can be achieved.
  • FIG. 3 shows a third embodiment of the curtain coating apparatus according to the present invention.
  • the curtain coating apparatus 1B of this embodiment is a paint C which has been subjected to defoaming treatment in the vacuum defoaming apparatus 3. Is supplied to the storage tank 9 through the pipe 1h provided with the pump P2, and the paint C stored in the storage tank 9 is supplied to the curtain head 4 through the pipe 1i.
  • the interior of the factory building where the curtain coating apparatus 1A is installed has an atmospheric temperature of about 30 ° C. to 40 ° C. because a heat source such as a dryer is used as described above.
  • the coating material C supplied from the vacuum degassing device 3 to the storage tank 9 through the pipe 1h is heated by the atmospheric temperature in the factory building while staying in the storage tank 9 for a while. .
  • the storage tank 9 installed for the purpose of storing the paint C from the vacuum defoaming device 3 constitutes a heating device that uses the ambient temperature in the factory building as a heat source.
  • the paint C is heated to a temperature approximate to that of the curtain head 4 exposed to the ambient temperature in the same factory building, and supplied to the curtain head 4 through the pipe 1i. It becomes.
  • the curtain coating apparatus 1B Since the configuration of the curtain coating apparatus 1B described above is basically the same as the curtain coating apparatus 1 of the first embodiment except for the storage tank 9 and the pipes 1h and 1i, the curtain coating apparatus 1 in FIG. Detailed description will be omitted by giving the same reference numerals as those in FIG. 1 to elements having the same functions.
  • the energy consumption related to the coating work is reduced and the capital investment is greatly increased. Reduction can be achieved and an improvement in coating quality can be achieved.
  • FIG. 4 shows a fourth embodiment of the curtain coating apparatus according to the present invention.
  • the curtain coating apparatus 1 'of this embodiment includes a temperature sensor S for detecting the temperature of the curtain head 4', And a control device 100 ′ for controlling the operation of the heating device 10 ′ based on the temperature detected by the temperature sensor S.
  • the temperature sensor S is installed at an appropriate location where the substantial temperature of the curtain head 4 ′ can be measured, such as the head portion or nozzle portion of the curtain head 4 ′, and the detection signal from the temperature sensor S is It is input to the control device 100 '.
  • the temperature of the paint C supplied to the curtain head 4 ′ is heated to a temperature approximate to that of the curtain head 4 ′ based on the temperature of the curtain head 4 ′ detected by the temperature sensor S.
  • the heating device 10 ' is controlled in operation (feedback control).
  • the heating device 10 ' surrounds the circumference of the pipe 1c' with a jacket, and supplies a heat medium such as hot air or hot water to the inside of the jacket.
  • a heat medium such as hot air or hot water
  • the paint C is heated to an appropriate temperature, and the amount of the heat medium supplied to the inside of the jacket and the temperature of the paint C are adjusted based on a command from the control device 100 '.
  • C is heated to a temperature approximate to that of the curtain head 4 '.
  • the configuration of the curtain coating apparatus 1 ′ other than the sensor S and the control apparatus 100 ′ is basically the same as that of the curtain coating apparatus 1 shown in FIG.
  • the same reference numerals as those in FIG. 1 are added to the components having the same functions as those of the curtain coating device 1 to give a detailed description of the curtain coating device 1 ′. Omitted.
  • the energy consumption related to the coating work is reduced, and the equipment investment is greatly reduced.
  • the operation of the heating device 10 ′ is controlled by the control device 100 ′ to control the temperature of the paint C.
  • the temperature difference between the curtain head 4' and the paint C can be suppressed as small as possible, so that the deformation of the curtain head 4 'due to the temperature difference is prevented. It is prevented in advance and a significant improvement in coating quality can be achieved.
  • the heating device 10 ′ is provided with an electric heater or a lamp heater around the pipe 1c ′, the electric heater or lamp heater is supplied based on a command from the control device 100 ′.
  • the temperature of the paint C can be adjusted to a temperature approximate to that of the curtain head 4 'by adjusting the amount of power supplied.
  • the curtain coating apparatus and the curtain coating method according to the present invention are used for manufacturing various papers such as art paper, coated paper, pressure-sensitive paper, and paperboard. However, it goes without saying that the technique can be applied effectively.
  • the curtain coating device 1 shown in FIG. 1, the curtain coating device 1A shown in FIG. 2, the curtain coating device 1B shown in FIG. 3, and the curtain coating device 1 ′ shown in FIG. Is a device for applying a single layer of paint to the surface of the web W.
  • the curtain coating apparatus and the curtain coating method according to the present invention are arranged such that the first paint curtain film and the second paint are applied to the surface of the web to be conveyed. Needless to say, this is a technique that can be effectively applied even when a two-layer paint curtain film comprising a curtain film is supplied and the first paint and the second paint are applied in two layers.
  • 1, 1A, 1B, 1 '... curtain coating device 1a, 1b, 1c, 1d, 1e, 1f, 1g, 1h, 1i, 1a ', 1b', 1c ', 1d', 1e ', 1f' ... piping, 2, 2 '... supply tank, 3, 3 '... vacuum deaerator, 4, 4 '... Curtain head, 5,5 '... Return bread, 6,6 '... room, 7,7 '... return tank, 8, 8 '... Centrifugal defoaming device, 9 ... Storage tank, 10 '... heating device, 100 '... control device, C ... Paint, V ... Curtain membrane, W ... Web.

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  • Coating Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

La présente invention se rapporte à des appareil et procédé de couchage à nappe servant à apporter un film-nappe de peinture sur une surface d’une bande distribuée de manière à coucher la peinture sur la surface de la bande, lesdits appareil et procédé permettant la réduction de l’énergie consommée pour l’opération de couchage, une diminution nette de l’investissement de l’appareil, et une amélioration de la qualité de couchage. L’appareil de couchage à nappe applique la peinture sur la surface de la bande par le traitement de la peinture à l’aide d’un dispositif de démoussage sous vide, l’apport de la peinture traitée à une tête à nappe afin de former un film-nappe de la peinture par la tête à nappe, et l’application du film-nappe sur une surface de la bande distribuée. L’appareil de couchage à nappe se caractérise en ce qu’un dispositif de chauffage est installé dans une conduite servant à acheminer la peinture du dispositif de démoussage sous vide à la tête à nappe pour chauffer la peinture s’écoulant dans la conduite à une température approchant la température de la tête à nappe. Le procédé de couchage à nappe applique la peinture sur la surface de la bande par le traitement de la peinture à l’aide d’un dispositif de démoussage sous vide, l’apport de la peinture traitée à une tête à nappe afin de former un film-nappe de la peinture par la tête à nappe, et l’application du film-nappe sur une surface de la bande distribuée. Le procédé de couchage à nappe se caractérise en ce que la peinture apportée depuis le dispositif de démoussage sous vide à la tête à nappe est chauffée à une température approchant la température de la tête à nappe.
PCT/JP2010/063495 2009-08-31 2010-08-09 Appareil et procédé de couchage à nappe WO2011024637A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201080038213.3A CN102574147B (zh) 2009-08-31 2010-08-09 帘式涂敷装置及帘式涂敷方法
EP10811687.2A EP2474369B1 (fr) 2009-08-31 2010-08-09 Procédé de couchage à nappe

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2009200349A JP2011050817A (ja) 2009-08-31 2009-08-31 カーテン塗工装置およびカーテン塗工方法
JP2009-200349 2009-08-31

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WO2011024637A1 true WO2011024637A1 (fr) 2011-03-03

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EP (1) EP2474369B1 (fr)
JP (1) JP2011050817A (fr)
CN (1) CN102574147B (fr)
WO (1) WO2011024637A1 (fr)

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Publication number Priority date Publication date Assignee Title
EP2811068B1 (fr) * 2013-06-06 2019-05-08 Valmet Technologies, Inc. Procédé et dispositif de dégazage d'une substance de traitement d'une bande de fibres
JP6454597B2 (ja) * 2015-05-13 2019-01-16 東京応化工業株式会社 塗布装置、塗布システム及び塗布方法

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JP2000107668A (ja) * 1998-10-05 2000-04-18 Konica Corp 塗布装置及び塗布方法
JP2001087698A (ja) * 1999-09-22 2001-04-03 Ishikawajima Harima Heavy Ind Co Ltd カーテンコータ用カラー脱泡装置
JP2003170098A (ja) * 2001-12-06 2003-06-17 Shimadzu Corp スリットコータ

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US6497926B1 (en) * 1999-07-07 2002-12-24 Mitsubishi Paper Mills Ltd. Method of producing information recording material
JP2002066431A (ja) * 2000-09-01 2002-03-05 Fuji Photo Film Co Ltd 塗布液の調製・脱泡方法及び装置
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JP4683968B2 (ja) * 2005-03-11 2011-05-18 ボイス ペ−パ− パテント ゲ−エムベ−ハ− カーテン式コータ
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JP2000107668A (ja) * 1998-10-05 2000-04-18 Konica Corp 塗布装置及び塗布方法
JP2001087698A (ja) * 1999-09-22 2001-04-03 Ishikawajima Harima Heavy Ind Co Ltd カーテンコータ用カラー脱泡装置
JP2003170098A (ja) * 2001-12-06 2003-06-17 Shimadzu Corp スリットコータ

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JP2011050817A (ja) 2011-03-17
EP2474369A4 (fr) 2014-03-19
EP2474369B1 (fr) 2019-05-01
EP2474369A1 (fr) 2012-07-11
CN102574147B (zh) 2015-06-03
CN102574147A (zh) 2012-07-11

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