JPH1150231A - Production of film and production device therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for producing film with an oil mask, even as for an oil mask with a geometric pattern different in the content of oil to be required in the film width direction, capable of easily forming an oil mask without generating unevenness in the oil mask and defects in oil spots and to provide a producing device therefor. SOLUTION: This method for producing a film is the one in which, while oil for an oil mask blown off from the blow-off ports of oil nozzles 3 to 6 is fed to a printing roller 1 via a transfer roller 2, a film 11 is run to form a oil mask on the film 11. In this case, oil for forming an oil mask in the segment in the axial direction of the printing roller 1 and oil for forming an oil mask in the segment in the circumferential direction are blown off respectively from the blow-off ports of the oil nozzles.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for producing a vacuum-deposited film having a non-deposited portion by forming an oil mask on the film before the deposition.

[0002]

2. Description of the Related Art As a method of forming a non-deposited portion of a geometric pattern on a deposition film in a vacuum deposition device, there are a physical mask deposition method and an oil mask method. There is a laser margin method for removing with a laser. Of these methods, the oil mask method is widely used because it can be implemented with inexpensive equipment.

[0003] The oil mask forming method of the roller printing method is as follows.
JP-A-63-114957 and JP-B-8-26449 are known as prior art. FIG. 6 shows an oil mask forming machine 100 disclosed in Japanese Patent Publication No. Hei 8-26449. That is, the oil sprayed from the oil nozzle 45 is applied to the surface of the transfer roller 2 and the transfer roller 2
Is pressed against the print roller 1 to form an oil film on the convex geometric pattern on the surface of the print roller 1. Generally, a backup roller 7 provided opposite to the printing roller 1
In a state of being pressed (see FIG. 2), a film 11 is passed between the rollers 1 and 7, and an oil film of a geometric pattern is transferred onto the film. At this time, in the conventional method, no matter what geometrical pattern the printing roller 1 has, the oil mask is formed by blowing out oil from one oil nozzle 45 and applying it to the transfer roller 2.

[0004] At this time, if the area distribution in the axial direction of the print roller of the convex geometrical pattern on the surface of the print roller is uniform, it is only necessary to blow a uniform amount in the axial direction with one oil nozzle. However, for example, in the case of a lattice pattern, a line segment continuous in the circumferential direction of the print roller and a line segment continuous in the axial direction are combined in an intersecting manner. In this case, the larger the pitch between adjacent line segments in the axial direction, the more intermittent the contact with the transfer roller becomes, and the smaller the oil blowing amount required for the transfer, the smaller the amount of oil required for transfer. Since the line segment in the direction always contacts the transfer roller and always requires oil transfer, a large amount of oil supply is required as compared with the line segment in the axial direction.

Therefore, in the lattice pattern, it is necessary to supply a large amount of oil to the circumferential line segments and a small amount of oil to the axial line segments.

However, with a single oil nozzle according to the conventional method, a large amount of oil cannot be blown out partially because the width of the oil blowout slit is constant in the nozzle axial direction. In such a case, the oil amount is insufficient only in the circumferential line segment,
Defects of mask failure have occurred, such as metal remaining on the oil mask after vapor deposition.

If the blowing pressure is forcibly increased to increase the oil blowing amount at the circumferential line position, the oil blowing amount at the axial line position also increases, and the oil flow increases to the axial line segment of the print roller. Excess oil accumulated on the surface of the transfer roller without being transferred is blown off by the rotational force of the transfer roller and scattered on the running film, thereby causing an oil spot defect.

[0008] The same applies to a direct spraying method in which oil is directly sprayed on a film. Since the oil nozzle continuously sprays the oil on the running film, the oil blowing width is continuously formed in the film running direction as an oil mask.

FIG. 7 is a plan view of a metal-deposited film 11 in which an oil mask 51 is formed by the oil nozzle described in FIG. 2 of Japanese Patent Publication No. 8-26449. An oil mask 51 is formed in the film running direction.

In this method as well, it is necessary to expand the oil blowing width of the oil nozzle in a state where a wide oil mask in the film width direction is required. The oil pressure is reduced, and pressure unevenness occurs in the oil nozzle axial direction, so the amount of oil blown out is not stable in the nozzle axial direction, causing oil mask unevenness. Becomes difficult.

On the other hand, the appropriate oil blowing slit width is determined by various geometrical patterns of the printing roller. Conventionally, since the oil nozzle is provided with a nozzle groove directly by machining, when the slit width is changed, reworking or slitting is required. Part replacement was required, and adjusting the slit width was not easy.

[0012] Further, according to the required masking accuracy, when partially inexpensive oil is used in the axial direction of the oil nozzle, different oils are used in a conventional structure having one oil nozzle and one internal oil chamber. It was difficult to blow out partly.

[0013]

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned conventional problems, and to provide an oil mask having an oil mask unevenness and an oil spot even if the oil mask has a geometrical pattern in which the required oil amount differs in the film width direction. Without any drawbacks
An object of the present invention is to provide a method and an apparatus for manufacturing a film with an oil mask, which can easily form an oil mask.

[0014]

In order to achieve the above object, the present invention provides a method for producing a film, comprising: supplying oil to a printing roller through a transfer roller while supplying oil for an oil mask blown from an outlet of an oil nozzle to a printing roller. Running, in the method of manufacturing a film to form an oil mask on the film, in the oil forming the oil mask of the axial line of the printing roller, the oil forming the oil mask of the circumferential line, It is characterized in that the oil is blown out from the outlet of the oil nozzle.

Further, the film manufacturing apparatus of the present invention comprises: an outlet of an oil nozzle for blowing oil for an oil mask toward a transfer roller; a printing roller to which the blown oil is supplied via a transfer roller; A back-up roller for running the film between the print roller and the film, wherein the oil on the print roller is transferred onto the film to form an oil mask; And an oil nozzle that forms an oil mask of a circumferential line segment is provided, respectively.

The apparatus for producing a film of the present invention has an oil nozzle for directly spraying oil for an oil mask onto the film. Are provided at two or more locations in the film running direction, and a control mechanism for controlling the amount of each oil blowout is provided.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As a film, a polyester film, a polypropylene film, a nylon film, a polyphenylene sulfide film, a polyimide film and the like can be used.

FIG. 1 is a partial cross-sectional view showing an example of a vacuum evaporation apparatus which is an apparatus for producing a film of the present invention.
FIG. 2 is a perspective view of an oil mask forming machine in which two oil nozzles are installed in parallel below the transfer roller of FIG. 1.

As shown in FIG. 1, a vacuum evaporation apparatus 200
Has a film unwinding roll 8 set in a vacuum chamber 14, an oil mask forming machine 100 is provided following the unwinding roll 8, and a cooling roll 10 and a winding roll 9 are subsequently provided. Under the cooling roll 10, a metal rod 13 for vapor deposition of aluminum, zinc, etc. is
2 is provided with a vapor deposition unit for evaporating.

The film 11 unwound from the unwinding roll 8 is transferred with a geometric oil mask in an oil mask forming machine 100. Next, the cooling roll 10
Above, the metal particles melt-evaporated by the heating boat 12 are deposited in close contact with portions other than the oil masked portion of the film 11. The metal evaporation source 12 is not particularly limited, and any conventionally known ones other than the heating boat can be used. For example, a crucible, an electron beam gun, or the like can be used.

As shown in FIG. 2, the oil mask forming machine 100 includes a print roller 1, a transfer roller 2, and a backup roller 7, and a film 11 to be processed is interposed between the print roller 1 and the backup roller 7. It can be sent out while pinching. Among these rollers, the transfer roller 2 and the backup roller 7 have smooth roller surfaces, while the print roller 1 has a geometrically convex portion on the surface.

The printing roller 1 and the transfer roller 2 are rotatably supported by a pair of plate-shaped frames 21 provided to face each other in the width direction shown in FIG. The print roller 1, the transfer roller 2, and the backup roller 7 are free rollers that are not driven, and therefore receive rotational force from the film 11 due to mutual pressing, and rotate at the same peripheral speed as the film 11. However, these rollers may be drive rollers driven by a suitable known means such as a motor as long as they have the same peripheral speed as the running speed of the film.

Below the transfer roller 2, an oil nozzle 3 and an oil nozzle 4 supported by a frame 21 are provided, and oil heated to 80 to 180 ° C. in an oil chamber 26 (see FIG. 2) is injected. Alternatively, it is applied to the surface of the transfer roller 2 by evaporation. As shown in FIG. 2, in this embodiment, the oil nozzles 3 and 4 use box-shaped metal containers heated by the heater 27, but are generally used with an oil mask.
A direct resistance heating type oil nozzle that energizes the metal oil nozzle itself may be used. Also, induction heating may be used.
The heating means does not matter. The shape of the oil nozzles 3 and 4 is preferably a pipe or box having a cylindrical or polygonal cross section in terms of space, but the shape is not particularly limited as long as space permits. The shape of the oil outlet of the oil nozzle 3 is such that a slit-shaped opening 30 having a uniform width in the roller axis direction is provided in the slit plate 28, and the outlet is directed to the outer peripheral surface of the transfer roller 2 above. It is a thing. The slit width is preferably set arbitrarily in the range of about 0.1 to 5 mm in consideration of the film deposition rate and the oil used. The oil applied from the oil nozzle 3 to the transfer roller 2 is mainly transferred to the line segment of the print roller 1 in the axial direction.

On the other hand, the oil nozzle 4 is provided with a slit-shaped opening 31 long in the roller circumferential direction in the slit plate 29 as shown in the figure so that more oil can be supplied to the line segment in the circumferential direction of the printing roller. The length on the peripheral surface of the transfer roller 2 facing the opening 31 is made as wide as possible. The slit-shaped opening 31 is aligned with the line segment in the circumferential direction of the printing roller 1 in the axial direction so that the oil transfer is performed without displacement.

FIG. 3 is a plan view showing the slit plate of FIG.

Returning to FIG. 2, the plate-shaped shutter plate 2 is placed on the slit plates 28 and 29 of the oil nozzles 3 and 4.
4 and 25 are installed so as to be freely slid and fixed in a direction perpendicular to the axis of the printing roller 1, cover the slit-shaped openings 30 and 31 to an arbitrary width, and set the opening width to an arbitrary value. The size can be adjusted. Thereby, the adjustment of the opening width of the slit plates 28 and 29 can be easily changed. As for the sliding method of the shutter plates 24 and 25, as shown in FIG. 2, it is the cheapest to make a long hole in the shutter plates 24 and 25 themselves, slide them manually, and fix them with screws. Once installed,
Further, the workability can be improved.

In this embodiment, the oil is sprayed by using two oil nozzles. However, if the oil chamber 26 and the oil blow slit openings 30 and 31 are divided, the oil nozzle body becomes one. It may be a figure. Of course, two or more may be used.

FIG. 4 is a perspective view of the oil nozzle shown in FIG. 1 for directly spraying oil on the running film to form an oil mask.

As the oil nozzles 5 and 6, a direct resistance heating type pipe is used here, but the shape and the heating means are not limited.

As shown in FIG. 7, the oil nozzles 5 and 6 have slit-shaped openings in the oil nozzle circumferential direction at arbitrary intervals in the oil nozzle axial direction to form an oil mask line 51 continuous in the film running direction. A part is provided. At this time, when the oil mask 37 (FIG. 4) having a wide width is partially provided on the film, the oil nozzle slits 5a, 6a
Are equally distributed between the oil nozzles 5 and 6. For example, the oil mask 37 of FIG. 4 is distributed at the nozzle slit 5a of the oil nozzle 5, the oil mask 36 is distributed at the nozzle slit 6a of the oil nozzle 6, and so on. This prevents a drop in the oil blowing pressure in the oil nozzles 5 and 6, and a uniform oil blowing can be obtained at the nozzle slits 5a and 6a in the oil nozzle axial direction.

The adjustment of the slit width of the nozzle slits 5a and 6a is performed by adjusting the oil nozzle body 4 as shown in FIG.
By inserting the cylindrical outer cylinder 41 provided with an arbitrary slit on the outer periphery of the cylinder 0 and rotating and fixing the cylindrical outer cylinder 41, the nozzle slit width of the oil nozzle can be easily adjusted.

The appropriate amount of oil blown from the oil nozzles 3 to 6 can be adjusted by adjusting the slit-shaped opening width and the oil temperature. This configuration completely separates the control of the amount of oil applied to the print roller axial line segment and the circumferential line segment, and also allows the individual blow pressure to be adjusted individually, so that the oil nozzles do not affect each other. Appropriate amount can be given.

Whether the applied amount of oil is appropriate or not is determined by the degree of clearness of the oil mask by vapor-depositing the film on which the oil is actually transferred.

The oil nozzles 3 and 4 appropriately supply the required amount of oil to the printing roller 1 to the transfer roller 2, and transfer the oil from the transfer roller 2 to deposit an appropriate amount of oil thin film on the convex portion. The attached print roller 1 continuously prints a geometric oil mask on the film 11 running while being held by the backup roller 7. Thereafter, the oil nozzles 5 and 6 spray a linear oil thin film in the film running direction.

The metal particles flying from the metal evaporation source below adhere to the film 11 at the cooling roll 10, but oil evaporates due to the heat of the metal particles only at the portion where the oil thin film is formed. Secure the obstruction mask part.

Also, when different types of oils are used in forming the oil mask, if two or more oil outlets are provided as described above, different types of oils can be put in the respective oil reservoirs. If the slit opening shape of the nozzle is arbitrarily created in accordance with the position where oil is to be transferred, it can be easily applied.

Since one oil nozzle is used as one oil chamber, two or more oil nozzles are used. However, for simplicity, two or more oil chambers are provided in one oil nozzle, and By performing temperature control and slit opening width adjustment for each oil chamber, an effect similar to that of the oil nozzle can be obtained.

[0038]

EXAMPLE An oil mask was actually formed using the printing roller having the lattice pattern shown in FIG. 2 in the following two levels. The results are shown in Table 1.

[0039]

[Table 1] The number 1 indicates the formation of an oil mask by generally performing an oil spray supply of only the oil mask 3. As shown in FIG. 3, the oil nozzle had a box shape, and had a slit-shaped opening having a uniform width in the axial direction of the transfer roller 2 facing the oil nozzle. The oil temperature is constantly adjusted around 120 degrees. As a result, some metal residue was left on the film segment in the film running direction (the line segment in the circumferential direction of the printing roller) of the oil mask lattice pattern. The inspection method is to illuminate from the back of the film,
This is visually checked with a magnifying glass of 0 to 30 times.

This result is because only the circumferential line of the print roller continuously contacts the film, and if the oil is uniformly supplied in the axial direction of the roller, oil supply shortage in the circumferential line is caused.

On the other hand, in the number 2, the oil nozzles 3, 4
Was used to supply oil by spraying. The oil nozzle 3 is the same as that used in the test of No. 1, and the oil nozzle 4 is a box-shaped one as shown in the figure. It was used. Also, the oil temperature was adjusted to 120 degrees as in the test of No. 1. As a result, a clear oil mask having no metal residue in the axial and circumferential directions was obtained.

[0042]

As described above, according to the method for producing a film of the present invention, even if there is a line segment in which the oil mask is continuous or intermittent in the film running direction like a lattice pattern, the axial line segment is Naturally, the oil can be sufficiently supplied to the line segment in the circumferential direction of the printing roller, so that a film having a clear oil mask can always be manufactured. Further, even when the film is directly sprayed on the film with an oil nozzle, a film on which an oil mask is formed stably can be manufactured regardless of the difference in the width of the mask. As described above, a mask defect due to a shortage of oil can be eliminated, so that a deposition loss can be reduced.

Further, since different types of oils can be easily transferred to different arbitrary positions, respectively.
Inexpensive oil can be used partially, and the deposition cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view according to an embodiment of the vacuum evaporation apparatus of the present invention.

FIG. 2 is an enlarged perspective view of the oil mask forming machine of FIG.

FIG. 3 is a plan view of a slit plate of the oil nozzle of FIG. 1;

FIG. 4 is a perspective view of the oil nozzle of FIG. 1;

FIG. 5 is a sectional view of the oil nozzle of FIG.

FIG. 6 is a schematic view of a conventional oil mask forming machine.

FIG. 7 is a plan view of a metal-deposited film on which an oil mask is formed.

[Explanation of symbols]

 1: Printing roller 2: Transfer roller 3-6: Oil nozzle 5a, 6a: Nozzle slit 7: Backup roller 8: Unwinding roll 9: Winding roll 10: Cooling roll 11: Film 12: Heating boat 13: Metal for vapor deposition Rod 14: Vacuum tank 21: Frame 24, 25: Shutter plate 26: Oil chamber 27: Heater 28, 29: Slit plate 30, 31: Slit-shaped opening 36, 37: Oil mask 40: Oil nozzle body 41: Cylindrical shape Outer cylinder 42: Blow-out oil 45: Oil nozzle 50: Metal deposition unit 51: Oil mask 100: Oil mask forming machine 200: Vacuum deposition device

Claims (6)

[Claims] 1. A method for producing an oil mask on a film by running the film while supplying oil for an oil mask blown out from an outlet of an oil nozzle to a printing roller via a transfer roller. A method for producing a film, characterized in that oil forming an oil mask in the axial direction of the printing roller and oil forming an oil mask in the circumferential direction are respectively blown out from the outlet of an oil nozzle. 2. The method for producing a film according to claim 1, wherein the amount of oil blown out from the oil mask on the axial line of the print roller and the oil mask on the circumferential line is separately controlled. 3. A film is formed between an outlet of an oil nozzle for blowing oil for an oil mask toward a transfer roller, a print roller to which the blown oil is supplied via a transfer roller, and the print roller. In a film manufacturing apparatus having a backup roller to be run and transferring oil on the print roller onto a film to form an oil mask, an oil nozzle forming an oil mask for a line in the axial direction of the print roller; And a blowout opening of an oil nozzle for forming an oil mask of a circumferential line segment. 4. An apparatus for producing a film having an oil nozzle for directly spraying oil for an oil mask onto a film and forming an oil mask on the film, wherein two or more oil outlets of the oil nozzle are provided in a film running direction. And a control mechanism for controlling the amount of each oil blowout. 5. The film manufacturing apparatus according to claim 3, wherein two or more oil chambers are provided inside the oil nozzle. 6. The film manufacturing apparatus according to claim 3, wherein the outlet of the oil nozzle has a slit shape and has an adjusting mechanism capable of changing the slit width. .