TWI576254B - Method for manufacturing a fine-structured transfer film and apparatus for manufacturing the same - Google Patents

Description

Manufacturing method and manufacturing device of fine structure transfer film

The present invention relates to a method and apparatus for producing a fine structure transfer film by transferring a fine concavo-convex pattern structure onto a surface of a thermoplastic film. The fine structure transfer film obtained by the present method is used as a member having a fine structure of a micron size or a nanometer size as a surface of an optical film having an optical function such as diffusion, condensing, reflection, and light transmission.

As a method of producing an optical film used for an optical film such as a ruthenium sheet, a light-diffusing sheet, or a lens sheet, a film is pressed against a surface of a strip-shaped mold having a fine uneven pattern formed on a surface thereof, and a mold is transferred onto the surface of the film. The method of fine concavo-convex pattern. Further, a method or apparatus which can be applied to a film made of a long thermoplastic material and which can be continuously subjected to self-winding and transfer processing to winding is proposed.

Patent Document 1 describes a method in which a film made of a thermoplastic resin is pressed against a heated mold by a mold comprising an endless belt having a fine structure on its surface, and a fine uneven structure is formed on the surface of the film. Thereafter, the film is peeled off after the mold is cooled. The heating and cooling of the mold are performed by bringing the mold composed of the endless belt into contact with the heating roller and the cooling roller, and the fine structure of the film is transferred by the heating roller and the roller opposite to the heating roller. The mold and the film composed of the endless belt are pressed together. In this configuration, since the temperature at the time of transfer and the temperature at the time of peeling can be independently controlled, even if the mold temperature at the time of transfer is set high, there is no problem of peeling property. The transfer can be performed with a fine uneven structure with high precision.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent No. 4450078

However, in the method for producing a fine structure transfer film described in Patent Document 1, in order to obtain higher transferability at a high transport speed, when the heat roller is heated to a high temperature and then transported, the film becomes a high temperature film. It becomes too soft so that a uniform tension state cannot be maintained in the width direction, causing a rapid meandering of the film in the pressurizing portion, and there is a problem that the transfer film cannot be stably formed continuously.

An object of the present invention is to solve the problems of the prior art, and to provide a method and a manufacturing apparatus for manufacturing a fine structure transfer film by pressing a mold composed of an endless belt having a fine structure on its surface against a thermoplastic resin In the method and apparatus for producing a fine structure transfer film having a fine structure continuously transferred onto the surface of the film, even in the case of performing high-precision shape transfer at a high speed, the film is not formed. Snakes occur and can be transported steadily.

In order to solve this problem, the present invention has the following constitution. that is,

(1) A method for producing a fine structure transfer film, which is a device for manufacturing a fine structure transfer film, which passes through at least the following [I] to [[] in the following conditions [A1] or [A2]; The process of V] is to process a film having at least one transfer layer, the fine structure of the transfer film The manufacturing device has an endless belt-shaped transfer mold which is suspended on the heating roller and the cooling roller and has a fine structure on the surface; [I] the mold heating process is a mold having an endless belt-like shape on the surface of which a fine structure is formed. Heating on one side of the heated heating roller; [II] pressure transfer process is performed by including one of the heating rollers in a state in which the transfer side surface of the film is in close contact with the fine structural surface of the mold Pressing and holding the roller; [III] conveying process is carried out to the cooling zone in a state where the pressed mold is kept in close contact with the film; [IV] cooling process, in which the mold and the film are made in the cooling zone Cooling from the mold side while maintaining the close contact; [V] peeling process, peeling off the cooled mold and film; [A1] the width of the film is wider than the width of the mold, and in the pressure transfer process Wherein both ends of the film in the width direction are separated from the heating roller; [A2] the width of the mold is wider than the width of the film, and the film is pressurized in the pressure transfer process The width is narrower than the width of the film.

(2) The method for producing a fine structure transfer film according to (1), wherein the processing is performed under the control of [B] [C] below: [B] setting the conveying direction of the mold on the cooling roll And means for detecting the tension applied to the mold, and controlling the position of the cooling roller so that the tension applied to the mold is always formed within a predetermined range; [C] providing a meandering detecting sensor for detecting the position in the width direction of the mold and means for adjusting the angle of the cooling roll, and controlling the position in the width direction of the mold to be always within a predetermined range The angle of the chill roll.

(3) The method for producing a fine structure transfer film according to (2), wherein the angle of the cooling roll is adjusted to maintain the parallelism with the cooling roll so as to be peeled off from the mold during the peeling process The peeling roller of the film acts.

(4) The method for producing a fine structure transfer film according to (2) or (3), wherein the means for adjusting the angle of the cooling roll is such that a bearing supporting one or both of the cooling rolls is oriented toward the mold Mover.

(5) The method for producing a fine structure transfer film according to any one of (2) to (4), wherein a decomposition energy of the angle adjustment of the cooling roll is 0.005 or less.

(6) The method for producing a fine structure transfer film according to any one of (1) to (5), wherein, in the pressure transfer process, pressure is applied to both ends in a width direction of the mold The outside gradually decreases.

(7) The method for producing a fine structure transfer film according to any one of (1) to (6), wherein, in the mold heating process, the surface temperature of the heated mold is adjusted to a Tg + 50 ° C of the film to In the range of Tg+100°C; in the pressure transfer process, the line pressure supported by the film is adjusted to be 400 kN/m or more; in the cooling process, the surface temperature of the cooled mold is adjusted to the Tg of the film. From 40 ° C to Tg - 100 ° C.

(8) A manufacturing apparatus for finely constructing a transfer film having a suspension An endless belt-shaped transfer mold having a fine structure on the surface of the heating roller and the cooling roller; the apparatus for manufacturing the fine structure transfer film has at least the following basic structures [i] to [v], and satisfies the following [ A1] or [a2]; [i] a heating means provided on a heating roller that is in contact with the back surface of the transfer mold; [ii] a pressurizing means having at least the heating roller disposed in parallel with the heating roller and having a surface a roll coated with an elastomer, and a rolling mechanism using the two rolls; [iii] a cooling means provided on a cooling roll that is in contact with the back surface of the transfer mold; [iv] a transport means for the heat roll And the cooling roller rotates for transporting the transfer mold; and [v] a peeling means having at least a peeling roller disposed in parallel with the cooling roller and rotating in a direction opposite to the cooling roller; [a1] The both ends of the contact portion of the heating roller and the mold in the width direction have a step on the surface of the heating roller so that the diameter of the roller on the outer side in the width direction decreases; [a2] the width of the mold is larger than the width of the roller. The width of the pressure portion is also wide.

(9) The apparatus for manufacturing a fine structure transfer film according to (8), further comprising the following control means of [b][c]: [b] control means, wherein a cooling roll system suspended over the mold is provided in The gantry that can slide along the direction of transport of the mold, the gantry and the movable means for sliding the gantry are connected by a load detector, and the tension applied to the mold obtained from the load detector is always formed at a predetermined Adjusting the slip of the gantry caused by the movable means in a manner within the range [c] control means provided with a meandering detecting sensor for detecting the position of the width direction of the mold, and a roller tilting means for adjusting the angle of the cooling roller provided on the stand, to sense the sense of the snake The tilting amount of the cooling roller is adjusted in such a manner that the width direction position of the mold obtained by the measuring device is always formed within a predetermined range.

(10) The apparatus for manufacturing a fine structure transfer film according to (9), wherein the roller tilting means of the peeling roller disposed adjacent to the cooling roller is the same roller tilting means as the cooling roller.

(11) The apparatus for manufacturing a fine structure transfer film according to any one of (8) to (10), wherein the rubber hardness of the elastomer on the surface of the roll is 70~ under the specification of ASTM D2240:2005. 97°.

The apparatus for manufacturing a fine structure transfer film according to any one of the aspects of the present invention, wherein the roller diameter gradually decreases toward the outer side in the width direction at both end portions in the width direction of the heating roller.

(13) The apparatus for manufacturing a fine structure transfer film according to any one of (8) to (11), wherein the thickness of the mold gradually decreases toward the outer side in the width direction at both end portions in the width direction of the mold.

(14) The apparatus for manufacturing a fine structure transfer film according to any one of (8) to (11), wherein the roll diameter gradually decreases toward the outer side in the width direction at both end portions in the width direction of the roll.

According to the present invention, a mold comprising a terminally formed endless belt having a fine structure is pressed against a film made of a thermoplastic resin, and a fine structure of a fine structure transfer film is continuously transferred onto the surface of the film. In the manufacturing method and the manufacturing apparatus, even when the shape transfer is performed at a high speed, the film does not become meandering, and the film can be stably conveyed, whereby the high-performance transfer can be manufactured with high productivity. membrane.

[Formation of the Invention]

The apparatus for manufacturing a fine structure transfer film of the present invention has at least an endless belt-shaped mold having a fine structure formed on the surface, and a pressurizing mechanism having at least a heating roller for heating the mold, parallel to the heating roller a roll disposed on the surface and covered with an elastomer, and a rolling means using the two rolls; a cooling roll for cooling the mold; a peeling mechanism for peeling off the film adhered to the mold; and a conveying mechanism The heating roller and the cooling roller rotate to transport the mold; the manufacturing device for the fine structure transfer film is characterized in that both ends in the width direction of the contact portion of the heating roller and the mold are outward in the width direction The method of reducing the roll diameter has a step on the surface of the heating roll, or the width of the mold is wider than the width of the roll pressing portion.

1 is a schematic cross-sectional view showing a manufacturing apparatus 1 for observing a fine structure transfer film from the film width direction of the molding, as an example of the embodiment of the present invention.

As shown in Fig. 1, the apparatus 1 for manufacturing a fine structure transfer film of the present invention has the endless belt-shaped mold 3, the heating roller 4 and the cooling roller 5 suspended over the mold 3, and is parallel to the heating roller 4. A roll 6 that is configured to press-form a film, and a peeling roll 7 that peels the formed film from the mold 3 as a peeling mechanism. Further, the heating roller 4 and the roll 6 are used to mold the mold 3 and the film 2 for molding. In the state of laminating, the two rolls are sandwiched and pressurized, so that at least one of the rolls is connected to the pressing means 12 and is configured as a pressurizing means. In addition, a transport mechanism for transporting the mold 3 that is suspended over the heating roller 4 and the cooling roller 5 has a driving means for rotationally driving the heating roller 4 and/or the cooling roller 5. Moreover, the conveying device for the film 2 for molding has the winding roller 8 and the winding roller 9, and one or a plurality of guide rollers (not shown) may be provided as needed.

As the operation of the fine structure transfer film manufacturing apparatus 1, the film 2 for molding which is taken up from the take-up roll 8 is supplied onto the mold 3 heated by the heat roller 4 while being pressed against the fineness of the mold 3 by the roll 6. The structural surface 3a is formed by transferring a shape corresponding to the surface shape of the mold 3, that is, a fine structure having a pattern opposite to the fine structure of the mold 3, to the molding surface 2a of the film 2, and then, the holding film 2 is in close contact with the mold 3. In the state, it is conveyed, cooled by the cooling roll 5, and then peeled off from the mold 3 by the peeling roller 7, and taken up on the take-up roll 9. This action is performed continuously.

In the second and third aspects of the present invention, the configuration of the apparatus for press-forming the forming film 2 by the heating roll 4 and the pair of rolls 6 formed by the heating roll 4 will be described.

Fig. 2 is a schematic view showing a structure in which the width of the film for molding 2 is made wider than the width of the mold 3, and the step 4a is provided at both ends of the heating roller 4. In the pressure transfer process, when the roll 6 is in direct contact with the fine structural surface 3a of the mold 3 heated to a high temperature, there is a thermal damage of the elastic layer 10 which causes the surface of the roll 6, and a flaw of the fine structural surface 3a is generated. The problem is therefore, in order to prevent these problems from occurring, it is preferable to make the width of the film 2 wider than the width of the mold 3. Thus, by setting the step difference 4a Since both ends of the film 2 are separated from the heating roller 4, the film 2 and the heating roller 4 are not partially adhered to each other, and the film 2 can be prevented from being serpentine and stably transported.

Further, Fig. 3 is a schematic view showing a case where the width of the mold 3 is made wider than the width of the film 2 for molding, and the width of the region pressed by the roll 6 is made narrower than the width of the film 2. Contrary to the configuration of Fig. 2, by making the width of the film 2 wider than the width of the pressurizing region of the roll 6, the elastic layer of the roll 6 caused by the direct contact between the fine structural face 3a of the mold 3 and the roll 6 can be prevented. 10 heat damage. Then, by making the width of the mold 3 wider than the width of the film 2, the film 2 is entirely supported by the mold 3, so that the local adhesion of the film 2 to the heating roller 4 can be prevented, and as a result, it is the same as Fig. 2 The configuration is the same, and it is possible to suppress the meandering of the film 2 and to perform stable transportation.

In the prior art, the width of the pressing portion of the take-up roll 6 is generally wider than the width of the mold 3, and the width of the film 2 for forming is made wider than the width of the mold 3, whereby the roll can be prevented. 6 is in direct contact with the fine structural surface 3a of the mold 3 heated to a high temperature. However, in this case, the inventors of the present invention have found that when the mold 3 and the heating roller 4 are heated to a high temperature and are transported, the heating roller 4 and the film 2 are partially exposed in the region outside the width direction of the mold 3. Adhesion causes the transport tension of the film 2 to become uneven in the width direction, thereby causing the meandering of the film 2.

The present invention is directed to the film for molding 2, the mold 3, the heating roller 4, and the roll 6, so that the respective widths on the press-molded portions become a determined size relationship, whereby the mold 3 and the heat roller 4 are formed at a high temperature. After the transfer is continuously performed, the film 2 and the heating roller 4 are not adhered, and the film can be conveyed in a continuously stable tension state. As a result, the film can be transported at a higher temperature or higher speed than in the past, and a higher precision transfer precision can be realized. Or the effect of productivity improvement due to high-speed transportation.

Further, in the meandering prevention of the film for molding 2, it is possible to prevent not only the meandering of the film 2 but also the meandering of the mold 3. This is because in the transport process in which the film 2 and the mold 3 are kept in close contact with each other after the pressure transfer process, when the mold 3 is meandered, the film 2 supported on the mold 3 also snakes together. There is a case where the transportation after the mold 3 is released from the mold becomes unstable. The present inventors have found that in the heating process of heating the mold 3 composed of the endless belt, the tension applied to the mold 3 is weakened by the thermal expansion of the mold 3, and thus the mold is loosened. When there is temperature unevenness in the width direction of 3, the tension in the width direction of the mold 3 becomes uneven due to the variation in thermal expansion, and a meandering occurs. Therefore, in order to prevent the squeezing of the mold 3, the cooling roller 5 of the roller which is one of the suspension molds 3 has a configuration example of the mold meandering prevention mechanism for detecting and controlling the tension applied to the mold 3 and the position in the width direction of the mold 3. The figure is explained. Moreover, the control may be either automatic control or manual control, but automatic control is preferred.

Fig. 4 is a schematic plan view showing a first configuration example of a mold meandering mechanism for detecting and controlling the tension fluctuation and the meandering of the mold 3 which is suspended between the heating roller 4 and the cooling roller 5, and Fig. 5 is a view showing the width of the film from the film width. A schematic view of the configuration example is shown in the direction, and FIG. 9 is a schematic view showing a method of measuring the position in the width direction of the mold by detecting the meandering detecting sensor 24 of the mold 3.

The endless belt-shaped mold 3 is suspended over the heating roller 4 and the cooling roller 5, and the cooling roller 5 is attached to the gantry 15 that can slide in parallel in the direction in which the mold is conveyed. By the movement of the gantry 15, between the heating roller 4 and the cooling roller 5 The distance varies, and the tension applied to the mold 3 changes. The movement of the gantry 15 is performed by the movable means 19 which combines the servo motor 17 and the feed screw 18, and the gantry 15 and the movable means 19 are connected by the load detector 20. The tension applied to the mold 3 is detected by the load detector 20, and the amount of movement of the movable means 19 is controlled such that the detected value is formed within a predetermined range so that the tension of the mold 3 is kept constant.

Further, at least one of the bearings 13 and 14 supporting the both ends of the cooling roller 5 can be moved in parallel on the gantry 15 in the conveying direction of the mold 3. The movement of the bearing 14 is performed by the movable means 23 in which the servo motor 21 and the feed screw 22 are combined, and when the position of the mold 3 in the width direction is shifted by the meandering, the movement of the bearing 14 is caused by the movement of the bearing 14. The cooling roll 5 is tilted with the bearing 13 as a fulcrum, and is corrected so that the position of the width direction of the mold 3 becomes center. The offset of the position of the mold 3 in the width direction is detected by the meandering detecting sensor 24, and the amount of movement of the movable means 23, that is, the amount of tilting of the cooling roller 5, by the cooling roller 5, is controlled according to the offset amount. The tilting is performed so that the position of the width direction of the mold 3 is always maintained at the center.

According to the above-described mold meandering prevention mechanism, it is possible to prevent the slack of the mold 3 caused by the slack of the tension generated by the thermal expansion of the mold 3 and the unevenness of the tension caused by the temperature unevenness in the width direction. As a result, in the conveyance process after the pressure transfer process, the film 2 does not follow the mold 3, and the transfer film can be formed with a finer structure with higher precision and higher productivity.

Further, the movable means for moving the gantry 15 is not limited to the servo motor and the feed screw, and a fluid pressure cylinder using hydraulic pressure or air pressure as the operating fluid may be used. Figure 6 is a view showing the outline of a second configuration example of the present invention. Top view. The gantry 15 and the fluid pressure cylinder 25 are coupled to the load detector 20, and the pressure of the fluid pressure cylinder 25 is controlled based on the value detected by the load detector 20. When the fluid pressure cylinder is used as the movable means, the load detector is also connected. The tension of the mold is kept constant in order to prevent the fluctuation of the sliding resistance caused by the deterioration of the cylinder and the pressure instability of the operating fluid. And in order to visually and easily display the tension of the mold. Further, the configuration example of Fig. 6 shows a case where both of the bearings 13 and 14 supporting the cooling roller 5 can be moved on the gantry 15. Thereby, the angle of the cooling roll 5 can be adjusted with finer precision than the case where only one bearing can be moved.

Further, when the cooling roller 5 is tilted during the meandering prevention of the mold 3, it is preferable that the peeling roller 7 which is close to the cooling roller 5 is also tilted so that the cooling roller 5 and the peeling roller 7 are always kept parallel. When the peeling roller 7 is inclined with respect to the cooling roller 5, the peeling position at the time of peeling the film for molding 2 from the mold 3 is different in the width direction, so that peeling temperature unevenness occurs in the width direction of the film 2, or peeling tension occurs. The circumstance of the film 2 or the mold 3 caused by the unequality. A configuration example for causing the peeling roller 7 to follow the tilting of the cooling roller 5 will be described.

Fig. 7 is a schematic plan view showing a third configuration example of the tension control and meandering prevention mechanism of the mold of the present invention, and Fig. 8 is a schematic view showing the direction from the film width direction.

The peeling roller 7 is disposed on the gantry 15 in parallel with the cooling roller 5, and at least one of the bearings 27 and 27 supporting the peeling roller 7 is coupled with the bearing 14 of the supporting chill roller 5 by the servo motor 21 and The movable means 23 formed by the feed screw 22 can be transported along the mold 3 on the gantry 15. parallel movement. Therefore, when the cooling roller 5 is tilted in order to prevent the mold 3 from being meandered, the peeling roller 7 connected to the roller tilting means similar to the cooling roller 5 follows the cooling roller 5 and tilts. Therefore, the two rollers are always parallel. As a result, the film 2 was peeled off at a uniform temperature and peeling tension in the width direction.

However, as a point of attention at this time, it is necessary to set the distance between the fulcrums of the peeling roller 7 to be equal to the distance between the fulcrums of the cooling rolls 5, and the centers of the two rolls are located on the center cross section of the mold 3 in the width direction. When these conditions are not satisfied, when the cooling roller 5 and the peeling roller 7 are tilted by the movable means 23, the inclination angles of the two rollers are different, and thus it is impossible to maintain parallel.

Further, in the seventh and eighth drawings, the peeling roller 7 is disposed such that the wrap angle of the cooling roll 5 is 90 degrees in the film for forming 2, but it may be arranged in the range of 0 to 180 degrees. In other locations. The larger the wrap angle of the film for molding 2 to the cooling roll 5, the longer the film 2 is cooled, so that the film 2 can be sufficiently cooled.

Hereinafter, the heating roller 4 and the roll 6 constituting the press molding portion which are the features of the present invention will be described.

The roll 6 is a structure in which the outer surface of the core layer is covered with the elastic layer 10. The core layer is required to have strength and processing precision, and is suitable, for example, for steel, fiber reinforced resin, ceramic, aluminum alloy, and the like. Further, the elastic layer 10 is a layer which is deformed by pressing, and is preferably a resin layer or an elastomer material represented by rubber. Both ends of the core layer are rotatably supported by a bearing 11, and the bearing 11 is connected to a pressing means 12 such as a cylinder. The roll 6 is opened and closed by the stroke of the pressing means 12, and the film 2 for molding is rolled or opened.

In addition, the roll 6 can also have a temperature control mechanism in accordance with the required process or film material. The temperature adjustment mechanism may be a heat medium in which a crucible heater or an induction heating device is embedded in a hollow interior of the roller, or a flow path is internally processed to flow oil, water, or steam. Internal heating construction. Further, an infrared heater may be provided in the vicinity of the outer surface of the roller to heat the outer surface of the roller.

The machining accuracy of the roll 6 is 0.03 mm or less in the cylindrical tolerance defined by JIS B 0621 (revised year 1984), and the circumferential vibration tolerance is preferably 0.03 mm or less. When these values are too large, a local gap is formed between the heating roller 4 and the roll 6 at the time of rolling, so that it becomes impossible to uniformly press the film 2 for molding, and transfer occurs on the molding surface 2a of the film 2. Uneven situation. Further, it is preferable that the surface roughness of the elastic layer 10 is an arithmetic mean roughness Ra defined by JIS B 0601 (Revised Year 2001) of 1.6 μm or less. This is because when Ra exceeds 1.6 μm, the surface shape of the elastic layer 11 is transferred to the back surface of the film 2 at the time of pressing.

The heat resistance of the elastic layer 10 of the roll 6 is preferably a heat-resistant temperature of 160 ° C or more, and more preferably a heat-resistant temperature of 180 ° C or more. Here, the heat-resistant temperature means a temperature at which the rate of change in tensile strength at a temperature of more than 10% when left at this temperature for 24 hours.

As the material of the elastic layer 10, in the case of using, for example, rubber, fluorenone rubber, EDPM (ethylene propylene binary rubber), neoprene, CSM (chlorosulfonated polyethylene rubber), polyamine group can be used. Formate rubber, NBR (nitrile rubber), hard rubber (ebonite), and the like. When a higher modulus of elasticity and hardness are required, the resin for the calender roll may be used according to each rubber manufacturer, or may be used as a special prescriber for the above rubber. A hard pressure-resistant resin (for example, a polyester resin) having improved toughness.

Fig. 10 is a schematic view of the film 2 from the molding film 2 as viewed in the width direction of the film 2 when the pressing force is applied. At this time, the amount of deformation δ is generated in the thickness direction of the elastic layer 10, and the roll 6 and the film for molding 2 are brought into contact with each other by maintaining the contact width B. In order to control the amount of deformation δ of the elastic layer 10, it is preferable that the rubber hardness of the elastic layer 10 is in the range of 70 to 97° in accordance with the ASTM D2240:2005 (Shore hardness D) specification. This is because when the hardness is less than 70°, the amount of deformation δ of the elastic layer 11 is increased, and the contact width B with the film 2 is excessively large, and there is a fear that the pressure required for the transfer of the fine structure cannot be ensured, and When the hardness exceeds 97°, the deformation amount δ of the layer is reversed, and the contact width B becomes too small, so that it is impossible to ensure the pressing time required for the transfer of the fine structure.

Next, the heating roll 4 which presses the film 2 for press molding and the mold 3 with respect to the roll 6 is demonstrated.

Since the heating roller 4 is subjected to a load at the time of rolling, it is required to have strength and processing precision, and it also has a heating means. As the material, for example, steel, fiber reinforced resin, ceramic, aluminum alloy, or the like can be considered. Further, as the heating means, a crucible heater or an induction heating device may be provided by hollowing the inside, or a heat medium such as oil, water or steam may be flowed through the internal processing flow path, and heated from the inside of the roller. structure. Further, an infrared heater or an induction heating device may be provided in the vicinity of the outer surface of the roller to heat the outer surface of the roller.

The processing precision of the heating roller 4 is also the same as that of the roller 6, and is preferably 0.03 mm or less in the cylindrical tolerance defined by JIS B 0621 (revised year 1984) and 0.03 mm or less in the circumferential vibration tolerance. When these values are too When the pressure is large, a partial gap is formed between the heating roller 4 and the roll 6 at the time of rolling, so that the film 2 for molding cannot be uniformly pressed, and uneven transfer occurs on the molding surface 2a of the film 2. . Further, the surface roughness of the heating roller 4 is preferably 0.2 μm or less in accordance with the arithmetic mean roughness Ra defined in JIS B 0601 (Revised 2001). This is because when Ra exceeds 0.2 μm, the shape of the heating roller 4 is transferred to the back surface of the mold 3, and the shape is transferred to the molding surface 2a of the film 2.

It is preferable to form a high-hardness film such as hard chromium plating, ceramic spray coating, or diamond-like carbon coating on the surface of the heating roller 4. This is because the heating roller 4 is often in contact with the mold 3 to withstand the pressing force of the roller 6, so that the surface thereof is very easily worn, and when the surface of the heating roller 4 is worn or damaged, the film 2 for molding as described above is also generated. The problem of uneven printing or transfer of the surface shape of the roll to the molding surface 2a of the film 2 is problematic.

Then, the pressure-molded portion which is a feature of the present invention is configured to satisfy the following in a pressure-transfer process in which the heating film 4 and the roll 6 are brought into close contact with each other and the mold 3 is pressed. The condition of (1) or (2). that is,

(1) The width of the film for molding 2 is wider than the width of the mold 3, and both end portions in the width direction of the film for molding 2 are separated from the heating roller 4 in the pressure transfer process.

(2) The width of the mold 3 is wider than the width of the film for molding 2, and the width of the region where the film for molding 2 is pressurized is narrower than the width of the film for molding 2 in the pressure transfer process.

Hereinafter, the configuration of the press-molded portion of the present invention will be described in detail using Figs. 2 and 3. Further, in the second and third drawings, the film for molding 2 is used. The width of the region subjected to pressurization is defined as W, and the length from the end of the pressed region to the end portion of the film for molding 2 is defined as v, as in Fig. 2, the width of the mold 3 is wider than the width of the roll 6. In the case of a narrower case, the width of the mold 3 becomes W. As shown in Fig. 3, when the width of the roll 6 is narrower than the width of the mold 3, the width of the roll 6 becomes W.

The configuration of the press-molded portion when the condition of (1) is satisfied will be described with reference to Fig. 2 . As shown in Fig. 2, the width of the film for molding 2 is set to be longer than the width of the mold 3, that is, the width W of the region where the film for molding 2 is pressurized. The reason for this is to prevent thermal damage of the elastic layer 10 on the surface of the roll 6 due to the direct contact of the roll 6 with the fine structural surface 3a of the mold 3 heated to a high temperature, and generation of scratches on the fine structural surface 3a of the mold. Therefore, it is preferable that the length v from the end portion in the width direction of the mold 3 to the end portion in the width direction of the film 2 is in the range of 5 to 15 mm. This is because when v is less than 5 mm, there is a fear that the mold 3 and the roll 6 are in direct contact due to a slight meander which may naturally occur in the conveyance of the film 2. On the other hand, when v is larger than 15 mm, the area of the fine structure transfer film obtained with respect to the area of the film 2 is small, which is remarkably caused to lower the yield, which is not preferable.

Then, as the surface structure of the heating roller 4, a region where the film 2 and the heating roller 4 are not separated from each other is provided at the end portion of the film 2 for molding. As a means of separation, a step difference 4a is set. It is preferable that the height difference (separation distance) H of the step is in the range of 10 to 30 mm, and it is suitable from the end of the mold 3 to the step u of the step 4a of 1 to 3 mm.

The present inventors have found that, in the process using the high pressure conditions applicable to the present invention, the film 2 for forming is particularly bent at the end portion of the pressurizing portion. Therefore, by setting the step 4a of the heating roller 4, it is possible to suppress The end of the film which is deflected by the bending phenomenon contacts and adheres to the heating roller 4. The film 2 is subjected to a full pressing force in the width direction of the non-transfer surface by the rolls 6, whereas the transfer surface is supported only in the range of the mold 3. At this time, in the region outside the width direction of the mold 3 in the film 2, a bending moment is generated as a fulcrum at the end portion in the width direction of the mold 3, and as shown in Fig. 2, the end portion of the film 2 for molding is formed. Bending toward the side of the heating roller 4. At this time, by setting H and u to the above-mentioned proper range, even if a bending phenomenon occurs, the film 2 does not come into contact with the heating roller 4, and the film can be continuously formed more stably.

In the prior art, since the separation portion is not provided, when the mold 3 and the heating roller 4 are heated to a high temperature for transportation, the heating roller 4 and the molding film 2 are locally adhered, so that the conveying tension of the film 2 is in the width direction. It becomes uneven, and it causes the film 2 to snake more. In the transfer method in which the separation portion of the present configuration is provided, even if the mold 3 and the heating roller 4 are heated to a high temperature and continuously transferred, the film 2 and the heating roller 4 are not adhered, so that the continuous stable tension state can be performed. transport. As a result, the film can be transported at a higher temperature or higher speed than ever before, and the transfer precision with higher precision or the productivity improvement by high-speed transport can be achieved.

Next, the configuration of the press-molded portion in the case where the condition of (2) is satisfied will be described using FIG. As shown in Fig. 3, the width of the mold 3 is made wider than the width of the film for molding 2, and the width of the pressurizing portion of the roll 6, that is, the width W of the region where the film 2 is pressurized is formed as the specific film 2. The width is also narrow. This reason is the same as the condition of (1), in order to prevent thermal damage of the elastic layer 10 caused by direct contact between the mold 3 and the roll 6, and generation of scratches on the fine structural surface 3a of the mold. Thus, by the pressing portion of the self-rolling roll 6 The length v of the end portion in the width direction to the end portion in the width direction of the film 2 is preferably in the range of 5 to 15 mm. This reason is also the same as the condition of (1) because when v is less than 5 mm, there is a fear that the mold 3 is in contact with the roll 6 due to a slight meandering in the conveyance of the film 2, and on the other hand, when v When it is larger than 15 mm, the yield of the fine structure transfer film obtained is remarkably lowered with respect to the area of the film 2.

In the present configuration, the width of the mold 3 is made wider than the width of the film 2 for molding, and the film 2 is entirely supported by the mold 3 in the width direction, and the film 3 and the heating roller 4 are continuously transferred while being heated to a high temperature. 2, the heating roller 4 does not adhere, and can be transported in a continuously stable tension state. As a result, the film can be transported at a higher temperature or higher speed than ever before, and the transfer precision with higher precision or the productivity improvement by high-speed transport can be achieved.

Further, in the configuration of both of (1) and (2), it is preferable that the pressure is gradually lowered toward the end portion at the end portion in the width direction of the pressurizing portion. By lowering the pressure at the end portion, it is possible to alleviate the bending phenomenon at the end portion of the film for molding 2 and the pressure trace generated in the boundary portion between the pressed region and the non-pressurized region, thereby suppressing the deterioration of the planarity of the film after molding. The winding posture is disordered, so that the film can be continuously conveyed and molded in a more stable state.

Figs. 11 to 13 show an example in which the pressure is lowered at the end portion of the pressurizing portion. Further, in each of the drawings, (a) shows a configuration that satisfies the condition (1), and (b) shows an example of a configuration that satisfies the condition (2).

Fig. 11 is a schematic view showing the configuration of a press-molded portion when the roll diameter is gradually decreased at the end portion in the width direction of the heating roller 4. The amount of deformation of the elastic layer 10 gradually decreases toward the outer side in the width direction of the pressurizing portion. As a result, the pressure applied to the film 2 for molding gradually decreases toward the end portion in the width direction of the pressurizing portion. As a result, the bending phenomenon at the end portion of the film 2 and the pressure trace generated in the boundary portion between the pressurized region and the non-pressurized region can be alleviated.

Further, Fig. 12 shows a structure in which the thickness of the mold 3 is gradually decreased toward the outer side in the width direction, and Fig. 13 shows a structure in which the roll diameter of the roll 6 is reduced toward the end in the width direction. In the same manner as in the configuration of Fig. 11, the pressure applied to the film for molding 2 gradually decreases toward the end portion in the width direction of the pressurizing portion, so that the bending phenomenon at the end portion of the film 2 can be alleviated. Pressurization marks at the boundary between the pressurized region and the non-pressurized region.

Hereinafter, preferred pressurization conditions of the heating roller 4 and the roll 6 will be described.

The relative positional accuracy of the heating roller 4 and the roll 6 is preferably 0.1 mm or less in the parallel tolerance defined by JIS B 0621 (Revised 1984). When the parallelism tolerance exceeds 0.1 mm, the pressing force applied to the film for molding 2 does not become uniform in the width direction, and there is a case where uneven transfer or filming of the film 2 occurs.

In addition, the total amount of the deflection at the time of pressurization of the two rolls is preferably 50 μm or less in the width W of the region where the film for molding 2 is pressed, and more preferably 30 μm or less. When the amount of deflection exceeds 50 μm, the elastic layer 10 of the roll 6 becomes unable to follow the deformation, and the pressing force applied to the film 2 becomes uneven.

Preferably, as shown in Fig. 10, the force supplied to the roll 6 by the pressing means 12 is P, and the contact length between the forming film 2 and the roll 6 is B, as shown in Figs. 2 and 3, The width of the region to be pressurized by the film 2 for molding is set In the case of W, it is preferable to set the external rolling rolling σ defined by σ=P/BW to 80 MPa or more, and more preferably 100 MPa or more. Further, it is preferable that the pressing distance of the elastic layer 10, that is, the contact length B is in the range of 4 to 8 mm, and it is more preferably in the range of 5 to 7 mm. If the contact length B is narrower than 4 mm, the fine structure transfer of the film 2 cannot ensure sufficient pressing time. On the other hand, when it is wider than 8 mm, it becomes difficult to ensure this rolling pressure with sufficient value. Further, the P/W obtained by dividing the width W of the pressurizing region by the force P supplied to the roll is defined as the line pressure, and this value indicates the load applied to the unit weight. The range of the line pressure P/W is preferably 400 kN/m or more, and more preferably 500 kN/m or more.

Next, other members of the manufacturing apparatus constituting the fine structure transfer film of the present invention will be described.

The mold 3 is an endless belt in which a fine structural surface is machined. The material is preferably a metal having high strength and thermal conductivity. For example, nickel, steel, stainless steel, copper, or the like is suitable. In addition, it is also possible to apply a plating to the surface of the metal strip. The method for producing the mold 3 having a fine structure on the surface may be a method in which a surface of a metal strip is directly subjected to cutting or laser processing, and a plating film formed on the surface of the metal strip is directly subjected to cutting and laser processing. A method of electroforming a cylindrical original plate having a fine structure on the inner surface thereof, a method of continuously attaching a thin plate having a fine structural surface to the surface of the metal strip, and the like.

The endless annular metal strip is a method of pre-welding the ends of the metal sheets having a predetermined thickness and length, and welding the metal sheets of a predetermined multiple thickness by a predetermined length of one half to form an endless loop. It is then produced by a method such as calendering. At this point, considering the metal strip The reason for the strength and workability is preferably in the range of 0.1 to 0.4 mm in thickness. If the thickness is smaller than this range, the tension applied by the heating roller 4 and the cooling roller 5 may cause breakage or plastic deformation of the metal strip. On the other hand, in the case where the thickness is larger than this range, the bending rigidity of the metal strip is too large, so that it becomes difficult to carry over the heating roller 4 and the cooling roller 5 or to be suspended over the rollers. .

In the case of plating the surface of the metal strip of the endless loop, it is preferable that the material of the plating is nickel or copper. Further, it is preferable that the thickness of the metal strip is 0.1 to 0.3 mm, and the thickness of the plating is 0.03 to 0.1 mm. If the thickness of the plating becomes larger than the thickness of the metal strip, there is a fear that peeling occurs at the interface between the metal strip and the plating. On the other hand, if the thickness of the plating is too small, it is difficult to accurately process the fine structure.

Hereinafter, an example of a method of manufacturing an endless belt mold will be described.

First, the ends of the thin stainless steel sheets are butted and pre-welded to form an endless looped metal strip. Next, the metal strip was fitted and fixed to a roll, and nickel plating treatment was applied to the surface. Then, the predetermined fine structure is cut by a grinder processing machine on the plating layer of the metal strip. Then, the metal strip subjected to the cutting process is removed from the roll, whereby an endless belt mold having a predetermined fine structure on the surface can be obtained.

The fine structure indicates that the convex shape having a height of 10 nm to 1 mm has a periodically repeating shape with a pitch of 10 nm to 1 mm, and a shape having a height of 1 μm to 100 μm in a convex shape with a pitch of 1 μm to 100 μm is preferably repeated periodically, for example, The grooves of the triangular shape are arranged in a plurality of stripes, or may be rectangular, semi-circular or semi-elliptical. also, The groove does not need to be a straight line, and may also be a curved stripe pattern. Further, the ridge line direction is not limited to the circumferential direction of the belt, and may be the width direction. Further, the fine structure is not limited to a continuous linear shape or a curved shape, and may be a convex shape or a concave shape in which a hemisphere, a cone, a rectangular parallelepiped or the like is discretely arranged in a dot shape.

As shown in Figs. 4 and 5, the mold 3 is suspended over the heating roller 4 and the cooling roller 5, and the cooling roller 5 is placed on the gantry 15 in a state in which both ends of the bearings 13 and 14 are rotatably supported. Then, the gantry 15 is slidably moved in parallel by the slide rail 16 in the transport direction of the mold 3, whereby the gantry 15 provided with the chill roll 5 is moved, thereby adjusting the transport of the mold 3 suspended over the chill roll 5. The position of the direction. At this time, the gantry 15 and the slide rail 16 are provided on the horizontal surface, and it is preferable to move the force with a small resistance to the force other than the movable direction. The gantry 15 is coupled to the movable means 19 in which the servo motor 17 and the feed screw 18 are combined by the load detector 20, and the load detector 20 is used to measure the force applied to the movable direction of the gantry 15, that is, from the mold 3 The direction of the tension transmitted by the cooling rolls 5 provided on the gantry 15 is connected. Thereby, when the gantry 15 is moved so that the mold 3 is suspended between the heating roller 4 and the cooling roller 5 in a state where tension is applied, the load detector 20 is loaded with the tension substantially equal to the upper and lower sides applied to the mold 3. Force. The servo motor 17 and the load detector 20 are connected by a control circuit (not shown), and the amount of movement of the movable means 19 is controlled in accordance with the fluctuation of the detected value of the load detector 20, so that the tension applied to the mold 3 is always maintained. In a certain manner, the position of the cooling roller 5 is automatically adjusted.

One of the bearings supporting the both ends of the cooling roller 5 is formed by combining a servo motor 21 and a feed screw 22 provided on the gantry 15. The movable means 23 is further movable parallel to the transport direction of the mold 3 on the gantry 15. At this time, the other bearing 13 is fixed to the gantry 15, and the bearing 14 is moved on the gantry 15, and the cooling roller 5 is rotated by the bearing 13 as a fulcrum, and is tilted with respect to the heating roller 4. The position of the bearing 14 that determines the angle at which the cooling roller 5 is tilted is controlled in accordance with the position in the width direction of the mold 3. In Fig. 4, the position of the bearing 14 when the heating roller 4 and the cooling roller 5 are parallel is used as a reference. When the position in the width direction of the mold 3 is shifted in the y1 direction of FIG. 4, the bearing 14 moves in the x1 direction, and when the mold 3 is displaced in the y2 direction, the bearing 14 moves in the x2 direction. The change in the position of the mold 3 in the width direction is monitored by the meandering detecting sensor 24. Fig. 9 is a schematic view showing the meandering detection sensor 24 and the mold 3 viewed from the downstream side in the film transport direction. The meandering detection sensor 24 is divided into a non-contact line type sensor such as a light amount detecting type of the transmitting side 24a and the receiving side 24b, and is blocked by the mold 3 in a part of the signaling signal, and The cover is provided in such a manner as to cover the end portion of the mold 3 in the width direction. Then, the width direction position of the mold 3 is detected based on the magnitude of the signal amount received by the receiving side 24b. The servo motor 21 and the meandering detecting sensor 24 are connected by a control circuit (not shown), and the amount of movement of the movable means 23 is determined in accordance with the detected value of the meandering detecting sensor 24. Further, the angle of the cooling roller 5 is controlled such that the position in the width direction of the mold 3 is always within a predetermined range, and the mold 3 is prevented from being meandered. Further, as a means for tilting the cooling roller 5, as shown in Fig. 6, the bearings 13 and 14 supporting the cooling roller 5 can be moved on the gantry 15. Thereby, the angle of the cooling roll 5 can be adjusted with higher precision than when only one of the bearings is moved.

Further, in order to accurately position the position of the mold 3 in the width direction, it is preferable to finely control the angle of the cooling roll 5, specifically, It is preferable to set the angular decomposition energy of the cooling roll 5 to 0.005 or less. Here, the angular decomposition energy of the cooling roller 5 is the minimum amount of change in the angle of the rotation axis of the cooling roller 5 with respect to the rotation axis of the heating roller 4 when the cooling roller 5 is tilted in order to perform the meandering correction of the mold 3. By setting the angular decomposition energy of the cooling roll 5 to 0.005 degrees or less, the position of the width direction of the mold 3 does not swing and spread during the meander correction, and is quickly restrained to the reference position of the center. As a result, the mold 3 is always located at the center in the width direction, so that the film 2 can be formed stably and continuously.

The angular decomposition energy of the cooling roller 5 is determined by the distance between the fulcrums of the two bearings 13 and 14 and the movement decomposition energy of the bearing 14 in the case where the bearing 13 is used as the fixed side and the bearing 14 is used as the moving side, for example, if the fulcrum When the distance between the two is 600 mm, the angular decomposition energy of the cooling roller 5 is about 0.0048 degrees when the displacement of the bearing 14 is 0.05 mm.

It is preferable that the cooling roll 5 is cooled by, for example, a water-cooling type cooling means in which a water passage is provided inside and a water of a certain temperature is continuously circulated. Thus, the mold 3 is cooled by heat conduction on the contact surface with the mold 3.

The peeling roller 7 has a cooling means built in the same manner as the cooling roll 5, and the film 2 for molding is cooled from the back side to function to assist the peeling from the die 3. At this time, when the cooling roller 5 is tilted while the meandering of the mold 3 is prevented, the peeling roller 7 is also tilted following the cooling roller 5, and it is preferable to operate in such a manner as to always maintain parallelism with the cooling roller 5. The tilting of the peeling roller 7, for example, as shown in Figs. 7 and 8, is performed by the same means as the tilting means of the cooling roller 5. Alternatively, the peeling roller 7 may have a structure in which the cooling roller 5 is pressed against a fluid pressure cylinder or the like. Pressing force of the peeling roller 7 against the film 2 for forming It is not particularly limited as long as the circumferential surface of the peeling roller 7 is in close contact with the back surface of the film for molding 2 .

Each of the take-up roll 8 and the take-up roll 9 has a structure in which the core of the film 2 for winding and molding can be fixed, and the end portion is connected to a driving means such as a motor, and can be rotated while controlling the speed. Further, it is preferable to adjust the tension applied to the film 2 for molding by torque control.

The ends of the rolls are rotatably supported by rolling bearings or the like. The heating roller 4 is coupled to a driving means such as a motor, and is rotatable while controlling the speed. Further, it is preferable that the cooling roller 5 is rotated by the driving force of the heating roller 4 by the belt mold. The transport speed is determined in consideration of the balance between the moldability of the fine structure and the productivity of the formed film. However, in order to improve the productivity while transferring the fine structure with high precision, it is preferable to determine the speed from 1 to 30 m/min. . The driving means of the roll 6 is connected to the end of the heating roller 4 by a chain or a belt, and is rotated in conjunction with the heating roller 4, or is rotated independently using a motor that can synchronize with the speed of the heating roller 4, but it is preferable to rotate independently. As a structure which can rotate freely, it can rotate by rubbing with the film 2 for shaping|molding.

Further, the bearing for supporting each roller is designed according to the quality of the roller or the load, the rotational speed, and the like. However, it is preferable to use a bearing of a aligning type as a bearing for supporting the cooling roller 5 and the peeling roller 7. When these rolls are used as bearings that are not self-aligning, when the rolls are tilted, they may be picked up and the bearings may be damaged.

A method of producing a film having a fine structure on its surface using this apparatus will be described.

The manufacturing method of the fine structure transfer film of the present invention is fine The manufacturing apparatus for constructing a transfer film sequentially passes through the following five processes under the conditions of (1) or (2) below, thereby processing a film having a transfer layer on at least one side, the fine structure transfer The film manufacturing apparatus has an endless belt-shaped transfer mold which is suspended from the heating roller and the cooling roller and has a fine structure on the surface thereof; the mold heating process is surrounded by a mold having an endless belt-like shape in which a fine structure is formed on the surface. The heated heating roller is heated while being heated; the pressure transfer printing process is performed by holding one of the heating rollers in a state in which the transfer side surface of the film is in close contact with the fine structural surface of the mold. The conveying process is carried to the cooling zone in a state in which the mold is kept in close contact with the film after being pressurized; the cooling process is performed in the cooling zone to keep the mold and the film in close contact with each other; The stripping process is to strip the cooled mold and film. Here, the condition (1) means that the width of the film is wider than the width of the mold, and in the pressure transfer process, both ends in the width direction of the film are separated from the heating roller. The condition (2) means that the width of the mold is wider than the width of the film, and in the press transfer process, the width of the pressed region of the film is narrower than the width of the film.

An example of an embodiment of the present invention will be described using Figs. 1 to 4 .

First, as a preparation stage of the manufacturing method, the film 2 for forming is taken out from the take-up roll 8, and in a state where the roll 6 is opened, the mold 3 which is suspended over the heat roller 4 and the cooling roll 5 passes through the peeling roll 7, The winding state is given by the take-up roll 9.

Then, while the molding film 2 is conveyed at a low speed by the driving means, the heating means of the heating roller 4 and the cooling means of the cooling roller 5 are operated. The surface temperatures of the heating roller 4 and the cooling roller 5 are tempered to a predetermined temperature. The reason why the temperature is adjusted while transporting is because the portion of the molding film 2 located on the heating roller 4 stores heat when it is not transported, and thus melts and ruptures. The conditions of the surface temperature of the heating roller 4 and the surface temperature of the cooling roll 5 depend on the material of the film for molding 2, the shape of the fine structure of the mold 3, the aspect ratio, etc., and the surface temperature of the heating roller 4 is set to the film 2 In the range of Tg + 50 ° C to Tg + 100 ° C, the surface temperature of the cooling roll 5 is preferably set within the range of Tg - 40 ° C to Tg - 100 ° C of the film 2. Here, Tg represents the glass transition temperature of the film. In addition, the transport speed in the temperature adjustment is preferably 0.1 to 5 m/min, and more preferably 0.1 to 1 m/min.

The surface temperature of the heating roller 4 and the cooling roller 5 (again, the mold surface temperature is the same temperature. The same applies hereinafter) is adjusted to a set value, and then, while being rolled out at the molding speed, the roll 6 is closed to heat the roller. 4 and the roll 6 pressurize the film for molding 2 and the mold 3, and transfer the shape of the fine structure surface 3a of the mold 3 to the molding surface 2a of the film 2. As conditions at this time, the film forming speed was set to 1 to 30 m/min, and the line pressure system was set to a range of 400 kN/m or more.

When the respective processes are arranged in accordance with the rotation of the mold, the continuous transfer of the film is composed of a mold heating process, a pressure transfer process, a transport process, a cooling process, and a peeling process. The mold 3 is heated in the portion in contact with the heating roller 4, and is usually heated by the heat transfer from the high temperature heating roller 4, and the temperature of the mold 3 is raised to the temperature until the heating roller 4 and the roller 6 are pressed. The surface temperature of the roller 4 (mold heating process). The film for molding 2 is attached to the pressing portion of the heating roller 4 and the roll 6, and is pressed against and adhered to the heated mold. The resin having the softened constituent film is filled in the pattern of the fine structural surface 3a of the mold 3 (pressure transfer process). The film pressed by the mold 3 is conveyed to the cooling zone (conveying process) while being kept in close contact with the mold 4. Here, the cooling zone indicates the range in which the mold 3 is in contact with the cooling roller 5. In the cooling zone, the film is cooled by heat conduction with the cooling roll 5, and each mold 3 is cooled below the glass transition point of the resin constituting the film (cooling process). The film after cooling is released from the cooling roll 5 by the peeling roller 7 (peeling process). The peeled film is wound around the take-up roll 9.

Then, in the pressure transfer process, as shown in FIG. 2, the width of the film for molding 2 is made wider than the width of the mold 3, and both end portions in the width direction of the film 2 are separated from the heating roller 4. Alternatively, as shown in Fig. 3, the width of the mold 3 is made wider than the width of the film 2, and the width of the pressing portion of the roll 6 is narrower than the width of the film 2. Thereby, the film 2 can be prevented from directly contacting the high-temperature heating roller 4, and the end portion of the film 2 can be prevented from being attached to the surface of the heating roller 4 due to high-temperature melting, and is pulled toward the rotating direction of the heating roller 4, so that the film 2 is caused. The chaos of the tension state occurs and snakes. Therefore, in the pressure transfer process, it is preferable that the film 2 and the heating roller 4 are not in direct contact with each other.

Further, during the production of the fine structure transfer film by the method, the tension and the width direction of the mold 3 are always maintained within a predetermined range by the tension control and the meandering prevention mechanism of the mold shown in Fig. 4 . It must be more appropriate. By preventing the tension fluctuation and the meandering of the mold 3, it is possible to prevent the film 2 from being caught by the meandering of the mold 3 which is in close contact with each other during the conveyance process after the pressure transfer process.

Therefore, in addition to the above, in the pressure transfer process, the pressure may be gradually increased toward the outside in the width direction at both end portions in the width direction of the pressurizing region. Reduced ground. The bending at the end portion of the film 2 for molding and the pressure trace generated at the boundary portion between the pressurized region and the non-pressurized region can be alleviated, and the deterioration of the planarity of the film after molding or the winding posture at the time of winding can be suppressed. pickle.

The film 2 for molding used in the present invention is a thermoplastic film containing a thermoplastic resin as a main component, specifically, polyethylene terephthalate or polyethylene-2,6-naphthalate. Polyester resin such as polytrimethylene terephthalate or polybutylene terephthalate, polyethylene, polystyrene, polypropylene, polyisobutylene, polybutene, polymethylpentene, etc. Olefin resin, polyamine resin, polyimide resin, polyether resin, polyester amide resin, polyether ester resin, acrylic resin, polyurethane resin, polycarbonate It is composed of an ester resin or a polyvinyl chloride resin. In view of the fact that the number of monomers to be copolymerized is large, and the physical properties of the material can be easily adjusted according to the above circumstances, in particular, polyester-based resins, polyolefin-based resins, polyamine-based resins, acrylic resins, or the like are used. It is preferable that the thermoplastic resin selected in the mixture is mainly formed, and it is preferable that the thermoplastic resin is composed of 50% by weight or more.

The film for molding 2 may be a film composed of a monomer of the above resin, or may be a laminate composed of a plurality of resin layers. In this case, surface characteristics, mechanical strength, and heat resistance such as slipperiness and abrasion resistance can be imparted as compared with the monomer film. As described above, in the case of a laminate comprising a plurality of resin layers, it is preferable that the entire film satisfies a requirement of the thermoplastic resin as a main component, but the film may not satisfy the requirements as a whole, as long as at least the surface layer satisfies the requirement. The surface of the element can be easily formed by the layer of the element. Especially in order to improve the moldability, the mold temperature is raised. In the case of a high temperature, the film can be maintained while using a film having a structure in which the surface layer is a resin having a low glass transition point and is easy to transfer a fine structure, and the core layer is a resin having a high glass transition point and high strength. Sex, while improving the formability of the film.

According to the above method for producing a fine structure transfer film, when a mold composed of an endless belt having a fine structure formed on the surface is pressed, and the fine structure is continuously transferred to the surface of the film, the film does not cause a meandering. The transport can be carried out stably, so that a high-precision transfer film can be manufactured with high productivity.

[Examples] Example 1

The film for molding 2 is produced by co-extruding a three-layer laminated film in which a polycarbonate resin is used as a core layer and a PMMA resin is laminated on both surfaces thereof as a molding layer. The film had a total thickness of 200 μm, and the laminate ratio of each layer was approximately 1:8:1 and the width was 220 mm.

The mold 3 is formed by applying nickel plating having a thickness of 0.1 mm to the surface of a stainless steel belt having a thickness of 0.2 mm, and a V-groove shape having a cutting pitch of 40 μm and a depth of 20 μm in parallel with the circumferential direction of the belt. production. In addition, the belt has a width of 200 mm and a circumference of 1200 mm.

The heating roller 4 is used for applying hard chromium to the surface of a cylindrical core material made of carbon steel. The heating roller 4 is formed in a shape having a step 4a at both ends in the width direction of the roller portion, and is suspended from the center portion of the mold 3 to have a width of 204 mm and an outer diameter of 180 mm, and a surface of the step 4a at both ends and an end portion in the film width direction. The separation distance H is 10 mm, and the length u from the step 4a to the end of the mold 3 is 2 mm, and the difference between the central portion and the end portions 4a is obtained. The overall width is 220mm. Further, the central portion is formed in a cylindrical shape in which the outer diameter of the taper or the like is changed over the entire width. The heating means uses an infrared lamp heater, and the surface temperature of the heating roller 4 is heated to 180 °C.

The cooling roll 5 is the same as the heating roll 4, and a carbon steel is used as a core material and the surface is plated with hard chromium. The chill roll 5 is maintained at a surface temperature of 20 ° C by circulating water inside.

The roll 6 is used for a cylindrical core material composed of carbon steel having a width of 220 mm and an outer diameter of 160 mm, and is covered with a polyester resin (hardness: Shore D86°) as the elastic layer 10 at a thickness of 20 mm. The filmer.

The pressing means 12 uses an air pressure cylinder to apply a pressing force of 120 kN to the roll 6. At this time, when the contact width B of the roll 6 and the film for molding 2 was confirmed using a pressure measuring film (pre-scale, manufactured by Fuji Film Co., Ltd.), it was 6 mm. Thereby, the external rolling pressure σ of the film for molding 2 is 100 MPa.

The molding speed of the film was set to three conditions of 5 m/min, 10 m/min, and 15 m/min.

In the present embodiment, the film 2 on the press-molded portion and the heat roller 4 are not adhered, and the fine structure transfer film can be stably and continuously formed at a transport speed of 15 m/min.

Example 2

In the present embodiment, in addition to the configuration of the first embodiment, the roller diameter is from the original outer diameter of 180 mm toward the width direction in the range of 12 mm from both ends in the width direction length 204 mm of the center portion of the heating roller 4 in the center portion of the suspension mold 3. The outer side gradually decreases by a maximum of 0.1 mm. Surface and film width of step 4a The separation distance H of the direction end portion and the length u from the step difference 4a to the end portion of the mold 3 are the same as those of the first embodiment, and the configuration other than the heating roller 4 is also the same as that of the first embodiment.

The pressing means 12 uses an air pressure cylinder and applies a pressing force of 120 kN to the roller 6. At this time, when the contact width B between the roll 6 and the film 2 for molding was measured using a pressure measuring film (pre-scale, manufactured by Fuji Film Co., Ltd.), the center portion of the rolled portion was 6 mm, but The both end portions were gradually reduced, and the width of the outermost end was 5.5 mm. This confirmed that the rolling pressure gradually decreased at both end portions in the film width direction.

The molding speed of the film was set to three conditions of 5 m/min, 10 m/min, and 15 m/min. In the present embodiment, the fine structure transfer film can be continuously formed without a meandering until the conveyance speed is 15 m/min, and the bending at the end portion of the film after molding can be relaxed, and the film having excellent planarity can be stably molded. .

Example 3

The film for molding 2 is produced by co-extruding a three-layer laminated film in which a polycarbonate resin is used as a core layer and a PMMA resin is laminated on both surfaces thereof as a molding layer. The film had a total thickness of 200 μm, and the laminate ratio of each layer was approximately 1:8:1 and the width was 180 mm.

The mold 3 is formed by applying a nickel plating having a thickness of 0.1 mm to the surface of a stainless steel belt having a thickness of 0.2 mm, and cutting a V-groove having a pitch of 40 μm and a depth of 20 μm in parallel with the circumferential direction of the belt. . In addition, the belt has a width of 200 mm and a circumference of 1200 mm.

The heating roller 4 is used for applying hard chromium to the surface of a cylindrical core material made of carbon steel. The heating roller 4 is formed on the entire width of the roller portion. A cylindrical shape in which the shape of the step or the taper changes, the outer diameter is 180 mm, and the width is 220 mm. Further, the heating means uses an infrared lamp heater, and the surface temperature of the heating roller 4 is heated to 180 °C.

The cooling roll 5 is the same as the heating roll 4, and a carbon steel is used as a core material and the surface is plated with hard chromium. The chill roll 5 is maintained at a surface temperature of 20 ° C by circulating water inside.

The roll 6 is used for a cylindrical core material composed of carbon steel having a width of 160 mm and an outer diameter of 160 mm, and is covered with a polyester resin (hardness: Shore D86°) as the elastic layer 10 at a thickness of 20 mm. The filmer.

The pressing means 12 uses an air pressure cylinder to apply a pressing force of 96 kN to the roll 6. At this time, when the contact width B of the roll 6 and the film for molding 2 was confirmed using a pressure measuring film (pre-scale, manufactured by Fuji Film Co., Ltd.), it was 6 mm. Thereby, the external rolling pressure σ of the film for molding 2 is 100 MPa.

The molding speed of the film was set to three conditions of 5 m/min, 10 m/min, and 15 m/min. Also in the present embodiment, as in the first embodiment, the film 2 on the press-molded portion and the heat roller 4 are not adhered, and the fine structure transfer film can be stably and continuously formed up to a conveyance speed of 15 m/min.

Example 4

In the present embodiment, in addition to the configuration of the third embodiment, the roller diameter is 180 mm from the original outer diameter to the width direction in the range of 30 mm from both ends in the width direction of the center portion of the heating roller 4 in the width direction of the center portion of the die 3 The outer side gradually decreases by a maximum of 0.2 mm. The configuration other than the heating roller 4 is the same as that of the third embodiment.

The pressing means 12 uses an air pressure cylinder and loads the roller 6 with 96 kN. Pressing pressure. At this time, when the contact width B between the roll 6 and the film 2 for molding was measured using a pressure measuring film (pre-scale, manufactured by Fuji Film Co., Ltd.), the center portion of the rolled portion was 6 mm, but The width of the outermost end was gradually reduced, and the width of the outermost end was 5.6 mm. This confirmed that the rolling pressure gradually decreased at both end portions in the film width direction.

The molding speed of the film was set to three conditions of 5 m/min, 10 m/min, and 15 m/min.

In the present embodiment, the fine structure transfer film can be continuously formed without a meandering until the conveyance speed of 15 m/min, and the boundary of the pressed/non-pressurized region on the end portion of the film after molding can be alleviated. The pressure trace generated by the part stably forms a film excellent in planarity.

Example 5

In the present embodiment, in addition to the configuration of the first embodiment, the tension control and the meandering prevention mechanism of the mold 3 shown in Fig. 4 are used to control the position of the mold 3 in the tension and width directions. The tension applied to the mold 3 was set to 6 kN/m, and the position of the gantry 15 was controlled in such a manner that the value was always maintained during the operation of the apparatus. Further, the meandering detection sensor 24 monitors the position in the width direction of the mold 3, and controls the angle of the cooling roller 5 in units of 0.005 degrees so that the position in the width direction of the mold 3 is always centered.

The other constitutions and molding conditions are the same as in the first embodiment.

This embodiment is the same as that of the first embodiment except that the film 2 on the press-molded portion and the heat roller 4 are not adhered, and the fine structure transfer film can be stably and continuously formed up to a conveyance speed of 15 m/min. The conveyance state of the film 2 after molding after being released from the mold 3 is also stabilized, and a roll of a molded film having a small winding deviation can be obtained.

Example 6

In the present embodiment, in addition to the configuration of the fifth embodiment, the roller diameter is gradually reduced from the original outer diameter of 180 mm toward the outer side in the width direction to a maximum of 0.1 in the range of 12 mm in both ends of the heating roller 4 in the width direction of 204 mm. Mm.

In addition, when the pressing means 12 uses an air-pressure cylinder and applies a pressing force of 120 kN to the roll 6, a pressure measuring film (prescale, manufactured by Fuji Film Co., Ltd.) is used for the roll 6 and the film for molding 2 When the contact width B is measured, the center portion of the rolled portion is 6 mm, but the both end portions are gradually reduced, and the width of the outermost end is 5.5 mm, thereby confirming the rolling at both end portions in the film width direction. Gradually reduce.

The other constitution and molding conditions are the same as in the fifth embodiment.

In the present embodiment, the film 2 on the press-molded portion is not adhered to the heat roller 4, the transport state of the film 2 after the mold release is stabilized, and the flatness after molding is excellent, and the roll-free posture can be performed. Discontinuous fine construction of the transfer film.

Example 7

In the present embodiment, in addition to the configuration of the third embodiment, the tension control and the meandering prevention mechanism of the mold 3 shown in Fig. 4 are used to control the position of the mold 3 in the tension and width directions. The tension applied to the mold 3 was set to 6 kN/m, and the position of the gantry 15 was controlled in such a manner that the value was always maintained during the operation of the apparatus. Further, the meandering detection sensor 24 monitors the position in the width direction of the mold 3, and controls the angle of the cooling roller 5 in units of 0.005 degrees so that the position in the width direction of the mold 3 is always centered.

The other constitutions and molding conditions are the same as in the third embodiment.

This embodiment is the same as that of the third embodiment except that the film 2 on the press-molded portion and the heat roller 4 are not adhered, and the fine structure transfer film can be stably and continuously formed up to a conveyance speed of 15 m/min. The conveyance state of the film 2 after molding after being released from the mold 3 is also stabilized, and a roll of a molded film having a small winding deviation can be obtained.

Example 8

In the present embodiment, in addition to the configuration of the seventh embodiment, the roller diameter is gradually reduced from the original outer diameter of 180 mm toward the outer side in the width direction to a maximum of 0.2 in the range of 30 mm from both ends of the heating roller 4 in the width direction of 220 mm. Mm.

In addition, when the pressing means 12 uses an air-pressure cylinder and applies a pressing force of 96 kN to the roll 6, the pressure measuring film (pre-scale, manufactured by Fuji Film Co., Ltd.) is used for the roll 6 and the film for molding 2 When the contact width B is measured, the center portion of the rolled portion is 6 mm, but the both end portions are gradually reduced, and the width of the outermost end is 5.6 mm, thereby confirming the rolling at both end portions in the film width direction. Gradually reduce.

The other constitution and molding conditions are the same as in the seventh embodiment.

In the present embodiment, the film 2 on the press-molded portion is not adhered to the heat roller 4, the transport state of the film 2 after the mold release is stabilized, and the flatness after molding is excellent, and the roll-free posture can be performed. The chaotic fine construction of the transfer film is continuously formed.

Comparative example 1

The film for molding 2 is produced by co-extruding a three-layer laminated film in which a polycarbonate resin is used as a core layer and a PMMA resin is laminated on both surfaces thereof as a molding layer. The total thickness of the film is 200 μm, and the layers are The laminate ratio is approximately 1:8:1 and the width is 220 mm.

The mold 3 is formed by applying a nickel plating having a thickness of 0.1 mm to the surface of a stainless steel belt having a thickness of 0.2 mm, and cutting a V-groove having a pitch of 40 μm and a depth of 20 μm in parallel with the circumferential direction of the belt. . In addition, the belt has a width of 200 mm and a circumference of 1200 mm.

The heating roller 4 is used for applying hard chromium to the surface of a cylindrical core material made of carbon steel. The heating roller 4 is formed into a cylindrical shape having a shape which does not have a step or a taper shape over the entire width of the roller portion, and has an outer diameter of 180 mm and a width of 220 mm. Further, the heating means uses an infrared lamp heater, and the surface temperature of the heating roller 4 is heated to 180 °C.

The cooling roll 5 is the same as the heating roll 4, and a carbon steel is used as a core material and the surface is plated with hard chromium. The chill roll 5 is maintained at a surface temperature of 20 ° C by circulating water inside.

The roll 6 is used for a cylindrical core material composed of carbon steel having a width of 220 mm and an outer diameter of 160 mm, and is coated with a polyester resin as the elastic layer 10 at a thickness of 20 mm (Shore hardness: D86°). The filmer. Thereby, the film for molding 2 is held over the entire width, and both end portions in the width direction of the film are in direct contact with the heating roller 4.

The pressing means 12 is an air-pressure cylinder, and the pressing force applied to the roll 6 is 120 kN, and the external rolling pressure σ = 100 MPa which is supported on the film 2 for forming.

The molding speed of the film was set to three conditions of 5 m/min, 10 m/min, and 15 m/min. The fine structure transfer film of Comparative Example 1 was slightly serpentine at a conveyance speed of 5 m/min, and was not stably molded continuously. In addition, when the conveyance speed is 10 m/min or more, the film is urgent immediately after pressurization. Snakes occur in the ground and cannot be formed continuously.

1‧‧‧Manufacturing device for fine structure transfer film

2‧‧‧Forming film

2a‧‧‧Forming surface of molding film

3‧‧‧Mold

3a‧‧‧Miniature construction surface of the mold

4‧‧‧heating roller

4a‧‧‧The section of the heating roller

5‧‧‧Cooling roller

6‧‧‧ Rolls

7‧‧‧ peeling roller

8‧‧‧Rolling roll

9‧‧‧Winding roller

10‧‧‧Elastic layer

11, 13, 14, 26, 27‧ ‧ bearings

12‧‧‧Measure means

15‧‧‧ 台台

16‧‧‧Slide rails

17, 21‧‧‧ servo motor

18, 22‧‧‧ Feed screw

19, 23‧‧‧ movable means

20‧‧‧Load detector

24‧‧‧Snake detection sensor

24a‧‧‧Snake detection sensor side

24b‧‧‧The detection side of the snake detection sensor

25‧‧‧Liquid pressure cylinder

28‧‧‧membrane channel

W‧‧‧The length of the width direction of the area where the film for molding is pressed by the mold and the roll

H‧‧‧Height of the surface of the heating roller from the surface of the mold to the surface of the difference between the two ends (separation distance)

V‧‧‧ Length from the end of the region where the film for molding is pressed to the end portion in the width direction of the film for molding

u‧‧‧The length of the step from the end of the mold of the heating roller to the end of the heating roller

P‧‧‧Power supplied to the rolls by means of pressing

B‧‧‧Contact width of the film for forming with deformation of the elastic layer on the surface of the roll

δ‧‧‧The amount of deformation of the elastic layer on the surface of the roll

σ‧‧‧Pressure applied to the film for molding at the pressurizing part

Fig. 1 is a schematic view showing an embodiment of the apparatus for manufacturing a fine structure transfer film of the present invention as seen from the film width direction of molding.

2 is an embodiment of the apparatus for manufacturing a fine structure transfer film according to the present invention, in which the film for molding is pressed against the mold by a heating roll and a roll opposed to the heating roll in the direction in which the film for molding is conveyed. A schematic diagram of the structure.

In a third embodiment of the apparatus for manufacturing a fine structure transfer film of the present invention, the film for molding is pressed against the mold by a heating roll and a roll opposed to the heating roll in the direction in which the film for molding is conveyed. A schematic diagram of the structure.

Fig. 4 is a schematic plan view showing a first embodiment of a tension control and a meandering prevention mechanism of a mold in the apparatus for manufacturing a fine structure transfer film of the present invention.

Fig. 5 is a schematic view showing a first embodiment of the tension control and the meandering prevention mechanism of the mold in the apparatus for manufacturing a fine structure transfer film of the present invention, as seen from the film width direction of the molding.

Fig. 6 is a schematic plan view showing a second embodiment of the tension control and the meandering prevention mechanism of the mold in the apparatus for manufacturing a fine structure transfer film of the present invention.

Fig. 7 is a schematic plan view showing a third embodiment of the tension control and the meandering prevention mechanism of the mold in the apparatus for manufacturing a fine structure transfer film of the present invention.

Figure 8 is a view showing the fine structure of the present invention in the width direction of the film for molding. A schematic view of a third embodiment of the tension control of the mold and the meandering prevention mechanism in the transfer film manufacturing apparatus.

Fig. 9 is a schematic view showing a method of measuring the position in the width direction of the mold by the meandering detecting sensor.

Fig. 10 is a schematic view showing the amount of deformation of the elastic layer on the surface of the roll in the embodiment of the present invention.

Fig. 11 is a view showing another embodiment of the apparatus for manufacturing a fine structure transfer film according to the present invention, in which the roll diameter is gradually decreased toward the outer side in the width direction at both end portions of the portion of the heating roll which is suspended from the mold, and is used for molding. A schematic view of the structure in which the film is pressed against the mold.

In another embodiment of the apparatus for manufacturing a fine structure transfer film of the present invention, the film for molding is pressed against the mold when the thickness of the mold gradually decreases toward the outer side in the width direction at both end portions in the width direction of the mold. A schematic diagram of the structure above.

Fig. 13 is a view showing another embodiment of the apparatus for manufacturing a fine structure transfer film according to the present invention, wherein the film for molding is pressed against the mold when the roll diameter gradually decreases toward the outer side in the width direction at both end portions in the width direction of the roll. A schematic diagram of the structure.

2‧‧‧Forming film

2a‧‧‧Forming surface of molding film

3‧‧‧Mold

3a‧‧‧Miniature construction surface of the mold

4‧‧‧heating roller

4a‧‧‧The section of the heating roller

6‧‧‧ Rolls

10‧‧‧Elastic layer

W‧‧‧The length of the width direction of the area where the film for molding is pressed by the mold and the roll

H‧‧‧Height of the surface of the heating roller from the surface of the mold to the surface of the difference between the two ends (separation distance)

V‧‧‧ Length from the end of the region where the film for molding is pressed to the end portion in the width direction of the film for molding

u‧‧‧The length of the step from the end of the mold of the heating roller to the end of the heating roller

Claims (14)

A manufacturing method of a fine structure transfer film is a manufacturing apparatus using a fine structure transfer film, and sequentially passes at least the following [I] to [V] under the condition of satisfying [A1] or [A2] below; a process for processing a film having at least one surface of a transfer layer having an endless belt-shaped transfer mold suspended over a heating roll and a cooling roll and having a fine structure on the surface thereof : [I] The mold heating process is performed by heating the heated heating roller on the surface of the endless belt-shaped mold having a fine structure on the surface; [II] the pressure transfer process is to make the film transfer In a state in which the printing side surface is in close contact with the fine structural surface of the mold, the roller is held and pressurized by one of the heating rollers; [III] the transportation process is performed to keep the mold adhered to the film after being pressurized. The state is transported to the cooling zone; [IV] the cooling process is performed by the mold side in a state where the mold and the film are kept in close contact with each other in the cooling zone; [V] the stripping process is to peel off the cooled mold and film; A1] the width of the film is wider than the mold Further, in the pressure transfer process, both ends of the film in the width direction are separated from the heating roller; [A2] the width of the mold is wider than the width of the film, and the pressure is turned In the printing process, the width of the region where the film is pressurized is narrower than the width of the film. Manufacturing method of fine structure transfer film as claimed in claim 1 , wherein the processing is performed under the control of [B] [C] below: [B] means for adjusting the position of the mold in the direction of conveyance on the cooling roll, and means for detecting the tension applied to the mold, And controlling the position of the cooling roller so that the tension applied to the mold is always formed within a predetermined range; [C] providing a meandering detection sensor for detecting the position in the width direction on the mold, and adjusting the cooling roller The angle is controlled by controlling the angle of the cooling roll so that the position in the width direction of the mold is always formed within a predetermined range. The method for producing a fine structure transfer film according to claim 2, wherein the film is removed from the mold in the stripping process in such a manner as to maintain the parallelism with the cooling roll in accordance with the angle adjustment of the cooling roll. The peeling roller moves. The method for producing a fine structure transfer film according to the second or third aspect of the invention, wherein the means for adjusting the angle of the cooling roll is such that a bearing supporting one or both of the cooling rolls is moved in a direction in which the mold is conveyed. The method for producing a fine structure transfer film according to the second or third aspect of the invention, wherein the resolution of the angle adjustment of the cooling roll is 0.005 or less. The method for producing a fine structure transfer film according to any one of claims 1 to 3, wherein in the pressure transfer process, the pressure is gradually increased toward the outside in the width direction at both ends in the width direction of the mold. reduce. The method for producing a fine structure transfer film according to any one of claims 1 to 3, wherein in the mold heating process, after heating The surface temperature of the mold is adjusted within a range of Tg+50° C. to Tg+100° C. of the film; in the pressurization transfer process, the line pressure supported by the film is adjusted to be 400 kN/m or more; in the cooling process, The surface temperature of the mold after cooling is adjusted within the range of Tg - 40 ° C to Tg - 100 ° C of the film. A manufacturing apparatus for a finely structured transfer film is a transfer mold having an endless belt shape which is suspended over a heating roller and a cooling roller and has a fine structure on a surface thereof; the manufacturing apparatus of the fine structure transfer film has at least the following [ The basic composition of i]~[v], and satisfying the following [a1] or [a2]: [i] endless belt-shaped mold, having a fine structure formed on the surface thereof; [ii] a pressurizing mechanism having at least a heating roller for heating the mold, a roller disposed parallel to the heating roller and having an surface coated with an elastomer, and a rolling device using the two rollers; [iii] a cooling roller for cooling the mold; [iv] peeling a mechanism for peeling off a film adhered to the mold; and [v] a transport mechanism that rotates the heat roller and the cooling roller for transporting the mold; [a1] a contact portion of the heat roller with the mold Both ends in the width direction have a step on the surface of the heating roller in such a manner that the outer diameter of the roller is reduced in the width direction; [a2] the width of the mold is wider than the width of the roller pressing portion. The manufacturing apparatus of the fine structure transfer film of claim 8 which further has the following control means of [b][c]: [b] control means, wherein the cooling roll system suspended over the mold is disposed at The gantry that can slide along the direction of transport of the mold, the gantry and the movable means for sliding the gantry are connected by a load detector, and the tension applied to the mold obtained from the load detector is always formed at a predetermined a method of adjusting the amount of sliding of the gantry caused by the movable means; [c] a control means provided with a meandering detecting sensor for detecting a position in a width direction of the mold, and adjusting the setting provided on the gantry The roller tilting means of the angle of the cooling roller adjusts the tilting amount of the cooling roller in such a manner that the position of the width direction of the mold obtained from the meandering detecting sensor is always formed within a predetermined range. The apparatus for manufacturing a fine structure transfer film according to the ninth aspect of the invention, wherein the roller tilting means of the peeling roller disposed adjacent to the cooling roller is the same roller tilting means as the cooling roller. The apparatus for manufacturing a fine structure transfer film according to any one of claims 8 to 10, wherein the rubber hardness of the elastomer on the surface of the roll is 70 to 97° under the specification of ASTM D2240:2005. The apparatus for manufacturing a fine structure transfer film according to any one of claims 8 to 10, wherein the roller diameter gradually decreases toward the outer side in the width direction at both end portions in the width direction of the heating roller. The apparatus for manufacturing a fine structure transfer film according to any one of claims 8 to 10, wherein the thickness of the mold gradually decreases toward the outer side in the width direction at both end portions in the width direction of the mold. The apparatus for manufacturing a fine structure transfer film according to any one of claims 8 to 10, wherein the roll diameter gradually decreases toward the outer side in the width direction at both end portions in the width direction of the roll.