JP6776165B2 - Laminated film manufacturing method and laminated film manufacturing equipment - Google Patents

Description

The present invention relates to a method and an apparatus for producing a laminated film for producing a laminated film having a functional layer on the film by using a pool of functional liquid on a film continuously conveyed by a roller.

In order to control the coating width of the functional liquid on the film, it was necessary to use an expensive and precise liquid supply facility such as a gieser or a die. Further, in order to control the width of the coating liquid having a low viscosity, a method of physically pressing a resin such as Teflon (registered trademark) against both ends of a roller for coating and using a pinning effect has been adopted.

Patent Documents 1 and 2 disclose a roller coating device in which a liquid reservoir of a functional liquid is provided between a backing roller and a doctor roller, and the functional liquid in the liquid reservoir is applied onto a film passing through the backing roller. Further, Patent Document 2 proposes a dam member that is composed of a side plate that partitions both sides of a liquid reservoir to regulate the coating width and a back plate that partitions the rear end, and defines a liquid reservoir area.

Japanese Unexamined Patent Publication No. 2011-98283 Jikkenhei 6-1971

In the production of laminated films, controlling the coating width of the functional layer provided on or between the films is an important issue in order to improve the production efficiency by keeping the product width constant. It is considered that the coating width can be regulated by using the dam member having the side plate described in Patent Document 2.

However, since the film is conveyed by rotating the roller with respect to the fixedly arranged dam member, it is necessary to provide a gap between the dam member and the film or the roller. Therefore, the functional liquid may leak from such a gap, resulting in loss of the functional liquid. This problem is more pronounced for functional liquids with lower viscosities, and if the outflow of functional liquid cannot be suppressed, problems such as thinning of the film thickness at the edges may occur even within the effective width of the coating film. ..

The present invention has been made in view of the above circumstances, and is a laminated film capable of controlling the coating width of the functional liquid, maintaining a uniform film thickness of the coating film, and suppressing loss of the functional liquid. It is an object of the present invention to provide a manufacturing method and a laminated film manufacturing apparatus.

In the method for producing a laminated film of the present invention, a film is formed on one surface of a film by transporting the film in a state where a pool of functional liquid is in contact with one surface of the film and applying the functional liquid to one surface of the film. It is a manufacturing method of a laminated film for manufacturing a laminated film including a functional layer composed of a coating film of a functional liquid.
Sealing members that define the positions of both ends of the liquid pool in the film width direction are arranged according to the application width of the functional liquid, and fluid pressure is applied to the liquid pool from the outside of the sealing member in the film width direction to surround the sealing member. This is a method for producing a laminated film that forms a coating film with a functional liquid while suppressing the outflow of the functional liquid from the water.

The fluid pressure applied to the liquid pool may be dynamic pressure or static pressure.

In the method for producing a laminated film of the present invention, the liquid surface of the liquid pool may be placed under a nitrogen atmosphere to form a coating film.

In the method for producing a laminated film of the present invention, the fluid pressure may be generated by nitrogen gas.

The laminated film manufacturing apparatus of the present invention includes a transport mechanism for transporting a film and
A pool of functional liquid that is provided in contact with one side of the film being conveyed,
A seal member that defines the positions of both ends of the liquid pool in the film width direction,
It is a laminated film manufacturing apparatus provided with a pressure applying mechanism for applying a fluid pressure to a liquid pool from the outside in the film width direction of the sealing member.

The laminated film manufacturing apparatus of the present invention has a configuration in which the pressure applying mechanism includes a gas supply unit that blows gas from the outside of the sealing member in the film width direction toward the liquid pool, and applies fluid pressure to the liquid pool by blowing the gas. It may be.

In the laminated film manufacturing apparatus of the present invention, the pressure applying mechanism includes a buffer chamber defining member that defines a buffer chamber adjacent to the outside in the film width direction of the sealing member, and applies fluid pressure to the liquid pool through the buffer chamber. It may be a configuration to be added.

The laminated film manufacturing apparatus of the present invention includes a gas supply unit that blows gas from the outside of the buffer chamber drawing member in the film width direction toward the buffer chamber, and by blowing gas into the buffer chamber, the gas is blown through the buffer chamber. It may be configured to apply fluid pressure to the liquid pool.

The laminated film manufacturing apparatus of the present invention includes a pressure chamber defining member that defines a pressure chamber adjacent to the outside in the film width direction of the buffer chamber, and a gas supply unit that supplies gas to the pressure chamber. By applying the pressure of the gas supplied from the pressurizing chamber to the buffer chamber, the fluid pressure may be applied to the liquid pool through the buffer chamber.

In the laminated film manufacturing apparatus of the present invention, it is preferable that the gas supply unit supplies nitrogen.

The laminated film manufacturing apparatus of the present invention may include a cover member that covers the space above the liquid pool and a nitrogen supply mechanism that supplies nitrogen to the space above.

The laminated film manufacturing apparatus of the present invention may include a roller that comes into contact with a liquid pool, and the roller may have an intaglio or a letterpress on its surface.

According to the method and apparatus for producing a laminated film of the present invention, the functional liquid is applied to the film from a liquid pool regulated to a desired coating width by a sealing member, so that a coating film having a uniform film thickness in a desired effective width is applied. Can be formed. Further, by applying a fluid pressure to the liquid pool from the outside in the film width direction of the sealing member, the functional liquid leaking in the film width direction can be suppressed, and the loss of the functional liquid can be suppressed.

It is a figure which shows the schematic structure of the laminated film manufacturing apparatus. It is an enlarged view of the coating part of the laminated film manufacturing method. It is a figure which shows the partial structure of the coating part of the laminated film manufacturing method. It is a perspective view of the coating width regulation member. It is a figure which shows the schematic structure of the design change example of the laminated film manufacturing apparatus. It is a figure which shows the structure of the design change example 1 of a pressure application mechanism. It is a figure which shows the structure of the design change example 2 of a pressure application mechanism. It is a perspective view of the coating width regulation member which has a partial structure of the design change example 2 of a pressure application mechanism.

Hereinafter, embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited thereto. The scale of each component in the drawing is appropriately changed from the actual one in order to make it easier to see.

<Laminated film manufacturing equipment>
FIG. 1 is a schematic configuration diagram of an example of a laminated film manufacturing apparatus according to the first embodiment of the present invention. FIG. 2 is an enlarged view of the coating portion 103 of the laminated film manufacturing apparatus 100 of FIG. 1, and FIG. 3 is a diagram showing a partial configuration of the coating portion 103.

The laminated film manufacturing apparatus 100 includes a feeder 101 that supports and feeds a film 10 such as a resin film used as a support in a roll state, and a plurality of guide rollers (not shown) for conveying a film-like work. A winder 104 for winding a laminated film formed through a processing step in a roll shape is provided, and a transport mechanism for transporting the film by a feeder 101, a guide roller, and a winder 104 is configured.

The laminated film manufacturing apparatus 100 is formed on one surface of the film 10 and a coating portion 103 that coats the functional liquid 21 on one surface 10a of the film 10 to form a coating film 20M between the feeder 101 and the winder 104. It is provided with a curing treatment unit 105 that cures the coated coating film 20M to form a functional layer 20.

As shown in FIGS. 2 and 3, the coating portion 103 has a liquid pool 22 of the functional liquid 21 provided in contact with one surface 10a of the film 10 being conveyed, and positions of both ends of the liquid pool 22 in the film width direction. A pair of sealing members 32 and a pressure applying mechanism 40 for applying fluid pressure to the liquid pool 22 from the outside in the film width direction of each sealing member 32 are provided. In the coating portion 103 of the laminated film manufacturing apparatus 100, the film 10 is configured to be conveyed between the mold roller 1 and the roller 2 having irregularities on the surface 1a, and the film is transferred by the mold roller 1 and the roller 2. A liquid pool 22 is provided between the film 10 wrapped around the roller 2 on the sandwiched position and the mold roller 1.

The pair of sealing members 32 are supported in parallel by the support plate 34, which is longer than the coating width of the functional liquid 21, at intervals of the coating width W. The coating width W is set to a desired effective width of the laminated film. The support plate 34 arranges and supports the seal member 32 at a predetermined position, and the support plate 34 and the seal member 32 are integrated to form the coating width regulating member 30.

FIG. 4 shows a perspective view of the coating width regulating member 30.
As shown in FIG. 4, the seal member 32 has a width L in the film width direction. Further, the surface 32a arranged along the mold roller 1 of the sealing member 32 has a curved surface along the curved surface of the roller 1, and the surface 32b arranged along the film 10 wrapped by the roller 2 is the roller 2. It has a curved surface along the curved surface.

As shown in FIG. 3, the support plate 34 also serves as a cover member that covers the space 25 above the liquid pool 22. The space surrounded by the support plate 34, the sealing member 32, the mold roller 1, and the film 10 constitutes a liquid pool chamber. The support plate 34 has a functional liquid supply nozzle port 34a for supplying the functional liquid 21 to the liquid pool 22, a liquid level sensor port 34b for detecting the liquid level of the liquid pool 22, and oxygen to the space 25 above the liquid pool 22. A nitrogen supply nozzle port 34c for purging and an oxygen concentration sensor port 34d for measuring the oxygen concentration in the space 25 above the liquid pool 22 are provided. By purging the nitrogen in the upper space 25, the liquid level of the liquid pool 22 can be placed in a nitrogen atmosphere. Here, the number and position of the functional liquid supply nozzle port and the nitrogen supply nozzle port can be appropriately set according to the physical properties and amount of the functional liquid, the nitrogen supply amount, and the like. In addition, ports for various sensors for measuring the temperature of the functional liquid and the state of the atmosphere can be appropriately installed.

Although the support plate 34 is provided as a cover member here, it does not need to be a cover member when it is not necessary to control the atmosphere of the liquid level of the liquid pool 22. In that case, the coating width regulating member 30 may have a configuration in which, for example, a pair of sealing members 32 are supported by a support rod instead of the support plate 34. Further, the coating width regulating member 30 is not limited to the configuration in which the sealing members 32 at both ends are supported by a common support plate, and each may be separately supported from both sides in the width direction of the film.

During the production of the laminated film, the mold roller 1 and the roller 2 rotate with respect to the seal member 32 which is fixedly arranged, and the film 10 is conveyed along with the rotation. Therefore, as shown in FIG. 2, the sealing member 32 is arranged at a constant distance from the mold roller 1 and the film 10 so as not to interfere with the rotation of the mold roller 1 and the roller 2 and the transportation of the film 10. Therefore, the seal member 32 (surface 32a) of the gap _{c 1} between the mold roller 1, the sealing member 32 (surface 32b) of the lower end 32c and the film 10 of the gap _{c 2} and the sealing member 32 between the film 10 and the roller 2 clearance c ₃ position to the contacting inevitably occur. Since the functional liquid 21 may leak from the liquid pool 22 from the gaps c _{1 to} c ₃ around these sealing members 32, it is preferable that the distance between them is small, and the surface of the roller 2 on which the film 10 is wrapped is wrapped. The distance between the surface 32b of the seal member 32 and the surface 32b of the seal member 32 is preferably about the thickness of the film 10. On the other hand, since the lower end 32c of the seal member 32 damaging the film 10 in contact with the film 10 becomes tapered, must be placed so as not to contact the film, the gap c ₃ becomes highest. Further, since the gap c ₃ is located at the lower end of the liquid pool 22, the hydraulic pressure due to the functional liquid 21 is generated. Therefore, of the periphery of the sealing member 32, leakage of the most functional fluid 21 from the gap c ₃ is likely to occur.

The pressure applying mechanism 40 is composed of an air blow device 41 as a gas supply unit that blows a gas 42 toward the liquid pool 22 from the outside of the seal member 32 in the film width direction. The air blow device 41 includes a tank for a compressed gas such as air or nitrogen gas, and discharges the compressed gas from a nozzle. The gas 42 may be compressed air, but nitrogen gas, argon gas, or the like is preferable when there are restrictions such as the functional liquid being easily oxidized. In that case, nitrogen gas is particularly preferable from the viewpoint of cost.

Air blow device 41, the film width direction outside of the sealing member 32, blowing air 42 toward the lower end 32c side of the gap _{c 3} of the sealing member 32. By blowing gas 42 into the gap _{c 3,} the fluid pressure applied to the liquid reservoir 22 is fed into the gap _{c 3} of the lower end 32c of the seal member 32 gas 42 to the liquid reservoir 22, the functional liquid from the gap _{c 3} 21 Can be prevented from leaking to the outside in the film width direction.

As described above, in the gap c ₃ of the lower end 32c of the seal member 32, and has a prone structures leakage of the functional fluid 21 from the liquid reservoir 22 in the film width direction outside. Accordingly, the air blow device 41 may be sprayed gas 42 for the entire clearance near the sealing member 32, but the configuration of blowing gas 42 into prone gap c ₃ leaks most functional fluid 21 is preferred.

In the coating unit 103, as shown in FIG. 3, the coating width regulating member 30 includes a functional liquid supply nozzle 52 that supplies the functional liquid 21 to the liquid pool 22, and a liquid level sensor 54 that detects the liquid level of the liquid pool 22. A nitrogen supply nozzle 56 for purging the nitrogen in the upper space 25 of the liquid pool 22 and an oxygen concentration sensor 58 for measuring the oxygen concentration in the upper space 25 are set. The functional liquid supply nozzle 52 is connected to a pump P for supplying the functional liquid. The nitrogen supply nozzle 56, which forms part of the nitrogen supply mechanism, is connected to the nitrogen supply device by a pipe (not shown).

The curing treatment unit 105 may have a structure capable of applying active energy for curing the coating film of the functional liquid to the coating film. For example, when the functional liquid is a photopolymerizable composition, UV It is a UV irradiation device that irradiates light, and when the functional liquid is a thermopolymerizable composition, it is a heating device such as a heater.

<Manufacturing method of laminated film>
A method for manufacturing a laminated film using the laminated film manufacturing apparatus 100 having the above configuration will be described.
As the film 10 as the support, resin films such as PET (polyethylene terephthalate), TAC (triacetyl cellulose) and PEN (polyethylene naphthalate) are used. As the functional liquid 21, a resin composition such as an acrylic resin having a viscosity of 10 to 10,000 mPa · s can be applied.

The film 10 unwound from the delivery machine 101 is conveyed to the coating unit 103, and in the coating unit 103, one surface 10a of the film 10 is conveyed so as to be in contact with the liquid pool 22 of the functional liquid 21, and is conveyed to the one surface 10a of the film 10. The functional liquid 21 is applied. At this time, the seal member 32 is arranged according to the coating width of the functional liquid 21, and the gas 42 is sprayed onto the liquid pool 22 from the outside of the seal member 32 in the film width direction by the air blow device 41, so that the liquid pool is collected. A fluid pressure is applied to 22 to form a coating film 20M by the functional liquid 21 while suppressing the outflow of the functional liquid 21 from the periphery of the sealing member 32.

As described above, the air blow device 41, sealed by the gas 42 is blown against the lower end 32c side of the gap _{c 3} members 32, the fluid in the liquid reservoir 22 by a gas 42 entering from the gaps c3 of the lower end 32c A pressure can be applied to suppress the outflow of the functional liquid 21 from the liquid pool 22 to the outside of the film width.

After that, in the curing treatment unit 105, the coating film 20M formed on the film 10 is irradiated with UV from the other surface side of the film 10 to cure the coating film 20M and form the functional layer 20.

Through the above steps, a laminated film in which the functional layer 20 is laminated on one surface 10a of the film 10 is formed, and the film is wound into a roll by the winder 104.

According to the laminated film manufacturing apparatus 100 and the manufacturing method, the functional liquid 21 is applied to the film 10 from the liquid pool 22 regulated to the desired coating width by the sealing member 32, so that the functional liquid 21 has a uniform film thickness in the desired effective width. A coating film can be formed. Further, by applying the fluid pressure to the liquid pool 22 from the film width direction, the functional liquid leaking in the film width direction can be suppressed, and the loss of the functional liquid can be suppressed.

In the laminated film manufacturing apparatus 100, the width L of the film width direction of the seal member 32, when the distance between the seal member 32 and the roller 1 or film 10 in the gap _c 1, _{c 2} and the t, L / t ≧ 10 It is preferable that there is a relationship of. By sufficiently increasing the width L of the seal member 32 with respect to the interval t, it is possible to prevent the functional liquid 21 from leaking beyond the seal member 32 to the outside in the film width direction.

The material of the sealing member 32 is not particularly limited, but nylon, new light, Teflon (registered trademark) and the like are preferably used. The material of the sealing member 32 preferably has a large contact angle with the functional liquid 21, and particularly preferably has a contact angle of 80 ° or more.

The manufacturing apparatus 100 includes a mold roller 1 having a surface 1a having a concavo-convex pattern, and in the liquid pool 22, the mold roller 1 enters the recess of the surface 1a and is located at a film nip position between the mold roller 1 and the roller 2. The functional liquid 21 confined in the recess is transferred onto the film 10. Therefore, the coating film 20M formed on one surface 10a of the film 10 is formed in an uneven pattern along the surface unevenness of the mold roller 1, and in the manufactured laminated film, such a patterned coating film is cured. A patterned functional layer formed on the film 10 is provided.

The mold roller having an uneven surface may be provided with an intaglio surface or a letterpress surface. On the other hand, when forming a uniform functional layer on the film, a roller having no unevenness on the surface may be used instead of the mold roller.

An example of specific device dimensions and functional liquid in the manufacturing device 100 will be given.
As the mold roller 1, a roller having a diameter of φ350 mm and a surface length of 800 mm and having irregularities on the order of μm is used. As the roller 2, a diameter of 110 mm and a surface length of 800 mm are used. Then, the mold roller 1 and the roller 2 are installed at intervals of 0 to 100 μm at the positions closest to each other. At this time, the coating speed (conveying speed) is about 0.5 to 5 m / min.
As the functional liquid 21, for example, a viscosity obtained by mixing 99 parts by mass of TMPTA (trimethylolpropane triacrylate) (manufactured by Daicel Ornex) and 1 part by mass of Irgacure TPO (manufactured by BASF) as a polymerization initiator. A resin composition of 100 mPa · s is used.
At this time, the curing treatment unit 105 is a UV irradiation device, and includes, for example, an air-cooled metal halide lamp (manufactured by Eye Graphics) 500 mW / cm ² . Then, the coating film is irradiated with ultraviolet rays at 300 mJ / cm ² . According to the above specifications, it is possible to manufacture a laminated film having a functional layer composed of an acrylic layer formed on a resin film in a pattern corresponding to the unevenness of a mold roller.

<Example of design change of laminated film manufacturing equipment>
FIG. 5 shows a schematic configuration diagram of the configuration of the laminated film manufacturing apparatus 110 of the design change example. The same elements as those of the laminated film manufacturing apparatus 100 of FIG. 1 are designated by the same reference numerals, and detailed description thereof will be omitted.

The laminated film manufacturing apparatus 110 of the design modification example is a manufacturing apparatus for producing a sandwich-shaped laminated film in which the functional layer 20 is sandwiched between the first and second films 10 and 12, and is the laminated film manufacturing apparatus 100 described above. In addition to the configuration, a transmitter 102 that supports the second film 12 in a rolled state and feeds it out is provided. Then, in the coating unit 103, a liquid pool 22 is provided between the first film 10 and the second film 12, and the coating film 20M is sandwiched between the first and second films and conveyed. ing. In this configuration, instead of the mold roller 1, a roller 3 having no unevenness on the surface is provided. The laminated film produced by the manufacturing apparatus 110 includes a first film 10, a functional layer 20, and a second film 12.

As described above, the liquid pool 22 can be formed not only between the films but also between the films, and the same sealing member can be formed regardless of the configuration of the manufacturing apparatus 100 or 110. By providing the 32 and the pressure applying mechanism 40, the effect of forming a uniform coating film and suppressing the loss of the functional liquid can be similarly obtained.

In the manufacturing devices 100 and 110 of the above embodiment, the pressure applying mechanism 40 is composed of the air blow device 41, but the pressure applying mechanism 40 is not limited to the above configuration. An example of design modification of the pressure applying mechanism 40 will be described below.

<Example of design change 1 of pressure application mechanism>
FIG. 6 shows the configuration of the design modification example 1 of the pressure applying mechanism 40. As shown in FIG. 6, in this example, the pressure applying mechanism 40 has a buffer chamber defining member 45 that defines a buffer chamber 44 adjacent to the outside in the film width direction of the sealing member 32, and a buffer toward the inside of the buffer chamber 44. It is provided with an air blow device 41 which is a gas supply unit for blowing a gas 42 from the outside of the chamber image forming member 45 in the film width direction. The buffer chamber defining member 45 is supported by the support plate 34 of the coating width regulating member 30 together with the seal member 32. The buffer chamber drawing member 45 has substantially the same shape as the sealing member 32, and has curved surfaces along the rollers 1 and 2. The distance between the seal member 32 and the buffer chamber defining member 45 may be appropriately determined at a distance that makes the buffer chamber 44 a desired capacity. FIG. 6 shows a mode in which a considerable amount of the functional liquid 21 leaks into the buffer chamber 44 and fills the buffer chamber 44, but the present invention is not limited to this, and the functional liquid leaks from the liquid pool 22 through the gap between the sealing member 32 and the film 10. The structure may be such that the pressure of the gas 42 is applied to the gas 42.

When such a buffer chamber 44 is provided, a fluid pressure can be applied to the liquid pool 22 via the buffer chamber 44. Functional fluid 21 the gas 42 is blown in the buffer chamber 44 is pushed back into the gap c ₃ of the lower end 32c of the sealing member 32 which communicates with the buffer chamber and the liquid reservoir 22, is added a fluid pressure to the liquid reservoir 22. By applying the fluid pressure to the liquid pool 22 for the functional liquid 21 leaking into the buffer chamber 44 in this way, the outflow of the functional liquid 21 from the liquid pool 22 can be suppressed.

As shown in FIG. 3, in a configuration in which a buffer chamber is not provided and gas is blown from the outside of the seal member 32 into the gap c ₃ on the lower end 32 c side of the seal member 32, the gas 42 invades the liquid pool 22 and the liquid pool Bubbles 42a may be generated in 22. Most of the bubbles 42a float up into the space above the liquid pool, but when a part of the bubbles 42a is applied in the functional liquid of the liquid pool 22, bubbles are generated in the coating film 20M. , May cause deterioration of the quality of the laminated film.

As in this configuration, the buffer chamber 44 is provided, gas is blown onto the buffer chamber 44 from the outside in the film width direction of the buffer chamber defining member 45, and gas is blown into the buffer chamber 44 from the lower end of the buffer chamber defining member 45. However, if the functional liquid leaking from the liquid pool side is configured to apply pressure by gas, the bubbles 42a of the gas 42 float up to the liquid surface in the buffer chamber 44, so that the liquid inside the sealing member in the film width direction is applied. It is possible to suppress the invasion of the air bubbles 42a into the pool 22 side, and it is possible to ensure the quality of the laminated film. It is preferable that the buffer chamber defining member 45 is partially provided with an opening for bleeding air.
Even with the configuration shown in FIG. 3, it is possible to control so that almost no bubbles enter the functional liquid by the balance between the viscosity of the functional liquid and the pressure due to the gas, and the viscosity and the pressure are adjusted. This makes it possible to produce a laminated film of sufficiently good quality.

<Example 2 of design change of pressure application mechanism>
FIG. 7 shows the configuration of the design modification example 2 of the pressure applying mechanism 40. As shown in FIG. 7, in this example, the pressure applying mechanism 40 defines the buffer chamber 44 outside the film width direction of the sealing member 32, and further to the outside of the buffer chamber 44 in the film width direction. A gas is added to the pressure chamber defining member 49 that defines the pressurizing chamber 48 adjacently and the functional liquid 21 that leaks from the liquid pool 22 to the buffer chamber 44 from the outside of the buffer chamber defining member 45 in the film width direction. It is provided with an air blow device 41 which is a gas supply unit that supplies 42 to the pressurizing chamber 48. In this example, the air blow device 41 does not blow the gas from the outside, but the nozzle is inserted into the supply port 49a provided in the pressurizing chamber drawing member 49 to supply the gas 42 to the pressurizing chamber 48. .. However, as a method of supplying the gas 42 to the pressurizing chamber 48, the gas may be sprayed from the outside in the film width direction into the gap at the lower end of the pressurizing chamber imaging member 49. Since the buffer chamber 44 is provided as in the design change example 1, the fluid pressure can be applied to the liquid pool 22 via the buffer chamber 44.

FIG. 8 shows a perspective view of the coating width regulating member 30 including a partial configuration of the pressure applying mechanism of this example. As shown in FIG. 8, the buffer chamber defining member 45 is supported by the support plate 34 of the coating width regulating member 30 together with the seal member 32. Similarly, the pressurizing chamber drawing member 49 is also supported by the support plate 34. The buffer chamber defining member 45 and the pressurizing chamber defining member 49 have substantially the same shape as the sealing member 32, and have curved surfaces along the rollers 1 and 2. The distance between the seal member 32 and the buffer chamber defining member 45 may be appropriately determined at a distance that allows the buffer chamber 44 to have a desired capacity, and the distance between the buffer chamber defining member 45 and the pressure chamber defining member 49 is added. The pressure chamber 48 may be appropriately determined at a distance having a desired capacity.
It should be noted that not only one buffer chamber 44 but also a plurality of buffer chambers 44 may be provided between the seal member 32 and the pressurizing chamber 48.

In this example, as shown in FIG. 7, the gas 42 is supplied to the pressurizing chamber 48, the inside of the pressurizing chamber 48 is pressurized, and the gas pressurized in the adjacent buffer chamber 44 by the pressurizing chamber 48. Forty-two pressures are applied. The pressure due to the gas applied to the buffer chamber 44 is directly or indirectly applied to the functional liquid 21 leaking from the sealing member 32 side. Then, the functional liquid 21 to which the pressure of the gas 42 is applied in the buffer chamber 44 is pushed back to the communication portion with the seal member 32, and the fluid pressure is applied to the liquid pool 22. The fluid pressure of the functional liquid 21 leaking into the buffer chamber 44 in this way can suppress the outflow of the functional liquid 21 from the liquid pool 22.

1 type roller 1a type roller surface 2 roller 10, 12 film 10a film surface 20 functional layer 20M coating film 21 functional liquid 22 liquid pool 25 upper space of liquid pool 30 coating width regulating member 32 sealing member 32a, 32b Surface 32c Lower end of seal member 34 Support plate 34a Functional liquid supply nozzle port 34b Liquid level sensor port 34c Nitrogen supply nozzle port 34d Oxygen concentration measurement port 40 Pressure application mechanism 41 Air blower 42 Gas 42a Bubbles 44 Buffer room 45 Buffer room Drawing member 48 Pressurizing chamber 49 Pressurizing chamber Drawing member 49a Supply port 52 Functional liquid supply nozzle 54 Liquid level sensor 56 Nitrogen supply nozzle 58 Oxygen concentration sensor 100, 110 Laminated film manufacturing equipment 101, 102 Transmitter 103 Coating unit 104 Winding machine 105 Hardening processing unit 110 Manufacturing equipment

Claims (12)

The function formed on the film and the one surface of the film by transporting the film in a state where the liquid pool of the functional liquid is in contact with one surface of the film and applying the functional liquid to the one surface of the film. A method for producing a laminated film, which is a method for producing a laminated film having a functional layer composed of a liquid coating film.
The sealing members that define the positions of both ends of the liquid pool in the film width direction are arranged so as to match the coating width of the functional liquid and one surface of the sealing member faces the one surface of the film. A laminated film that forms a coating film with the functional liquid while suppressing the outflow of the functional liquid from the periphery of the sealing member by applying a fluid pressure to the liquid pool from the outside in the film width direction of the sealing member . It is a manufacturing method,
A method for producing a laminated film in which the width L of the sealing member in the film width direction satisfies L / t ≧ 10 with respect to the distance t between the one surface and the one surface of the film. The method for producing a laminated film according to claim 1, wherein the liquid surface of the liquid pool is placed under a nitrogen atmosphere to form the coating film. The method for producing a laminated film according to claim 1 or 2, wherein the fluid pressure is generated by nitrogen gas. A transport mechanism that transports the film and
A pool of functional liquid that is provided in contact with one side of the film being conveyed,
A seal member that defines the positions of both ends of the liquid pool in the film width direction,
A pressure applying mechanism for applying a fluid pressure to the liquid pool from the outside of the sealing member in the film width direction is provided .
The sealing member is arranged so that one surface of the sealing member faces the one surface of the film.
A laminated film manufacturing apparatus in which the width L of the sealing member in the film width direction satisfies L / t ≧ 10 with respect to the distance t between the sealing member and the one surface of the film. 4. The pressure applying mechanism includes a gas supply unit that blows a gas from the outside of the sealing member in the film width direction toward the liquid pool, and applies the fluid pressure to the liquid pool by blowing the gas. The laminated film manufacturing apparatus according to the above. A transport mechanism that transports the film and
A pool of functional liquid that is provided in contact with one side of the film being conveyed,
A seal member that defines the positions of both ends of the liquid pool in the film width direction,
A pressure applying mechanism for applying a fluid pressure to the liquid pool from the outside of the sealing member in the film width direction is provided.
The pressure applying mechanism includes a buffer chamber defining member that defines a buffer chamber adjacent to the outside of the sealing member in the film width direction, and supplies gas to the buffer chamber to supply the sealing member and the film. A laminated film manufacturing apparatus that applies the pressure of the gas to the functional liquid that has flowed out from the one surface to the buffer chamber, and applies the fluid pressure to the liquid pool through the outflowing functional liquid . A gas supply unit for blowing gas from the outside of the buffer chamber drawing member in the film width direction toward the buffer chamber is provided.
The laminated film manufacturing apparatus according to claim 6, wherein the fluid pressure is applied to the liquid pool through the buffer chamber by blowing the gas into the buffer chamber. A pressurizing chamber defining member for defining a pressurizing chamber adjacent to the outside in the film width direction of the buffer chamber, and a gas supply unit for supplying gas to the pressurizing chamber are provided.
The laminated film manufacturing apparatus according to claim 6, wherein the fluid pressure is applied to the liquid pool through the buffer chamber by applying a pressure from the gas supplied from the pressurizing chamber into the buffer chamber. A transport mechanism that transports the film and
A pool of functional liquid that is provided in contact with one side of the film being conveyed,
A seal member that defines the positions of both ends of the liquid pool in the film width direction,
A pressure applying mechanism for applying a fluid pressure to the liquid pool from the outside of the sealing member in the film width direction is provided.
The pressure applying mechanism defines a buffer chamber defining a buffer chamber adjacent to the outside in the film width direction of the sealing member, and a film width direction of the buffer chamber defining member toward the buffer chamber. Equipped with a gas supply unit that blows gas from the outside of the
Wherein by blowing the gas into the buffer chamber, the fluid pressure was added Ru product layer film manufacturing apparatus to reservoir the liquid through the buffer chamber. The laminated film manufacturing apparatus according to claim 5 , wherein the gas supply unit supplies nitrogen, and any one of claims 7 to 9 . The laminated film manufacturing apparatus according to any one of claims 4 to 10 , further comprising a cover member for covering the space above the liquid pool and a nitrogen supply mechanism for supplying nitrogen to the space above. Includes a roller that contacts the reservoir the liquid, the roller is laminated film manufacturing apparatus according to any one of claims 4 to 1 1 having an intaglio or letterpress on the surface.