JP7098864B2 - A method for manufacturing an article with a moth-eye pattern, and a method for manufacturing an inverted type with a moth-eye pattern. - Google Patents

Description

The present invention relates to a method for manufacturing an article with a moth-eye pattern and a method for manufacturing an inverted type with a moth-eye pattern.

As a method for producing a moth-eye structure (anti-reflection structure), a material that is cured or decomposed by irradiation with an electron beam is applied, and a pattern is formed by irradiating the material with an electron beam, and then dry etching is performed. A method of dry-etching by vapor-filming the particles and a self-assembling method of aligning fine particles have been developed.

However, in the method of producing the moth-eye structure by irradiating the electron beam, it is difficult to increase the area of the moth-eye structure because the exposure area that can be irradiated at one time is small. Further, it is difficult to form the metal with good controllability by the method of thinly depositing the metal in an island shape and the method of self-organization due to the formation of unevenness and the like.

Under such circumstances, a method for producing a moth-eye structure by subjecting porous alumina to a pore size enlargement treatment has been developed (see, for example, Non-Patent Document 1). In this method, alumina is provided on the lens, and the alumina is anodized and the pore size is expanded to prepare a mold with a moth-eye structure, and the moth-eye structure is transferred with a UV curable resin by the mold with a moth-eye structure. The method. Since this method has good controllability and can increase the area, it is used for manufacturing an antireflection film for a flat panel display.

Further, as a method of forming a moth-eye structure on a lens, a method of using a mold in which a lens and a moth-eye structure provided on the surface thereof are integrated is disclosed (see, for example, Patent Document 1).

On the other hand, on the lens surface, a multilayer film may be applied by vacuum vapor deposition for the purpose of lowering the reflectance. A method of applying this method to impart a moth-eye structure by nanoimprint instead of imparting a multilayer film has been proposed (see, for example, Non-Patent Document 2). The method described in Non-Patent Document 2 is a method of transferring by a UV-NIL (UV-nanoimprint lithiumography) method using a replica sheet with a moth eye made of polyurethane acrylate. Specifically, a photocurable resin is applied on the lens, a replica sheet with moss eye is put on it, and in this state, the replica sheet with moss eye is pushed into the photocurable resin by air pressure and deformed along the curvature of the lens. That is the method.

Japanese Unexamined Patent Publication No. 2012-247767

T. Yanagishita, T. Kondo, K. Nishio and H. Masuda, Optimization of antireflection structures of polymer based on nanoimprinting using anodic porous alumina, J. Vac. Sci. Technol. B 26 (2008) 1856. Ju-Hyeon Shin, Hak-Jong Choi, Guy-Tae Kim, Je-Hong Choi and Heon Lee, Fabrication of Nanosized Antireflection Patterns on Surface of Aspheric Lens Substrate by Nanoimprint Lithography, Applied Physics Express 6 (2013)

The manufacturing method of Non-Patent Document 1 is useful for flat-panel articles such as flat panel displays, but needs to be improved for application to articles having curved surfaces such as lenses. In addition, it is difficult to form a fine-sized moth-eye pattern.

In the manufacturing method of Patent Document 1, since a mold in which the lens and the moth-eye structure provided on the surface thereof are integrated is used, not only the part of the moth-eye structure but also the lens body is formed of the photocurable resin. , It is inferior in transmittance and weather resistance as compared with a lens having a moth-eye structure using COP (cycloolefin polymer) or the like.

Further, injection molding is also possible by using the mold described in Patent Document 1. However, when the resin is injected into a mold having a nano-order uneven shape such as a moth-eye structure, the mold is easily clogged with the resin, and the injection and transfer are performed at a high temperature so that the nano-order uneven portion is filled with the resin. Since it must be performed under high pressure conditions, the moth-eye structure of the mold is easily damaged.

In the manufacturing method described in Non-Patent Document 2, the replica sheet with moth-eye is not sufficiently pressed when the air pressure is low, and the moth-eye structure is not transferred at the place where the replica sheet with moth-eye is not pressed. Therefore, it is conceivable to perform transfer under vacuum, but this is a large-scale method using a vacuum device. Alternatively, instead of pressing the replica sheet with moth-eye with a vacuum, it is possible to press it with a roll, but depending on the shape of the lens surface (for example, a concave lens), the roll may not sufficiently hit the entire surface and the moth-eye structure may not be transferred. It ends up. It is difficult to uniformly form the moth-eye structure on the surface of an article having a curved surface by the method of pressing the replica sheet with moth-eye with air pressure or a roll.

Therefore, the subject of the present invention is a method for manufacturing an article with a moth-eye pattern capable of uniformly forming a moth-eye structure on an article having a curved surface on the surface, and an inverted type with a moth-eye pattern, a mold set, and a moth-eye pattern used in this manufacturing method. It is to provide an inverted manufacturing method.

The present invention includes the following forms.

<1> The process of preparing an article including a curved surface in the planned area to which the moth-eye pattern is applied, and
A step of preparing an inverted mold having a surface shape that is inverted to the shape of the planned region of the article and having a moth-eye pattern in the region of the inverted surface shape.
A step of applying a film-forming material between the planned region of the article and the inverted moth-eye pattern, and
A method for producing an article with a moth-eye pattern, which comprises a step of pressing the inverted mold against the article after applying the film-forming material.

<2> The step of preparing the inverted mold with the moth-eye pattern is
A step of preparing an inverted type without a moth-eye pattern, which has a surface shape that is inverted to the shape of the planned region of the article, but does not have a moth-eye pattern.
The process of preparing another article having the same shape as that of the article and the planned area,
The process of forming a moth-eye pattern on the surface of the other article,
A step of applying a curable resin for an inversion type between the inversion type without a moth-eye pattern and the other article having a moth-eye pattern formed on the surface thereof.
After applying the curable resin for the reversing mold, the step of pressing the other article against the reversing mold without the moth-eye pattern, and
After the pressing, the step of curing the inversion type curable resin and
The method for manufacturing an article with a moth-eye pattern according to <1>.

<3> The step of forming a moth-eye pattern on the surface of the other article is
The step according to <2>, wherein a film having a moth-eye pattern is arranged between the other article and the inversion mold without the moth-eye pattern, and the other article and the inversion mold without the moth-eye pattern are pressed. A method for manufacturing goods with a moth-eye pattern.

<4> The step of applying the film-forming material to the surface of the article is
The process of preparing another article having the same surface shape as the article,
The film-forming material is applied between the inversion type with a moth-eye pattern and the other article, and after pressing the inversion type with the moth-eye pattern and the other article, the inversion type with the moth-eye pattern and the other article are pressed. A step of separating a part of the film-forming material from the article and moving a part of the film-forming material to the other article side, and leaving a part of the film-forming material on the surface of the inverted mold with a moth-eye pattern.
A step of pressing the lens with the inversion type with a moth-eye pattern in which a part of the film-forming material remains on the surface, and a step of pressing the lens.
The method for producing an article with a moth-eye pattern according to any one of <1> to <3>.

<5> The method for manufacturing an article with a moth-eye pattern according to any one of <2> to <4>, wherein the other article is an article copy body in which the surface shape of the article is copied.

<6> The planned area to which the moth-eye pattern is applied exists on both sides of the article.
A step of preparing an inverted type A having a surface shape inverted to the shape of the planned region on one surface of the article and having a moth-eye pattern in the inverted surface shape region.
A step of preparing an inverted type B having a surface shape inverted to the shape of the planned region on the other surface of the article and having a moth-eye pattern in the inverted surface shape region.
A step of applying a film-forming material to each of the planned region of the article and the moth-eye pattern of the inverted type A, and between the planned region of the article and the moth-eye pattern of the inverted type B.
The article with a moth-eye pattern according to any one of <1> to <5>, which comprises a step of pressing the inverted mold A and the inverted mold B against the article after applying the film-forming material. Manufacturing method.

<7> The article according to any one of <1> to <6>, wherein the article includes a lens, a curved display, an instrument panel of an automobile having a curved surface, a showcase having a curved surface, and a signage having a curved surface. A method for manufacturing articles with a moth-eye pattern.

<8> The method for producing an article with a moth-eye pattern according to any one of <1> to <7>, wherein the film-forming material contains a curable resin.

<9> The method for producing an article with a moth-eye pattern according to <8>, further comprising a step of curing the curable resin after the pressing step.

<10> The method for producing an article with a moth-eye pattern according to any one of <1> to <9>, wherein the film-forming material has a viscosity of 0.1 mPa · s to 10 Pa · s.

<11> In the step of pressing the inverted mold with the moth-eye pattern on the article after applying the film-forming material,
The method for manufacturing an article with a moth-eye pattern according to any one of <1> to <10>, which is pressed at a temperature of 25 ° C. to 300 ° C.

<12> In the step of pressing the reversing mold with a moth-eye pattern on the article after applying the film-forming material,
The method for manufacturing an article with a moth-eye pattern according to any one of <1> to <11>, which is pressed for 1 second to 10 minutes.

<13> The method for manufacturing an article with a moth-eye pattern according to any one of <1> to <12>, wherein the height of the moth-eye pattern is 50 nm to 1000 nm.

<14> The method for manufacturing an article with a moth-eye pattern according to any one of <1> to <13>, wherein the pitch of the moth-eye pattern is 20 nm to 1000 nm.

<15> An inverted type with a moth-eye pattern for imparting a moth-eye pattern to the surface of an article, which has a surface shape that is inverted to the surface shape of an article having a curved surface on the surface and has a moth-eye pattern in a region of the inverted surface shape. ..

<16> The inverted type with a moth-eye pattern according to <15>, wherein the article includes a lens, a curved display, an instrument panel of an automobile having a curved surface, a showcase having a curved surface, and a signage having a curved surface.

<17> An article copy body that is a copy of the surface shape of an article having a curved surface on its surface,
The inverted type with a moth-eye pattern according to <15> or <16>,
A set of molds for imposing a moth-eye pattern on an article, including.

<18> A step of preparing an inverted type without a moth-eye pattern, which has a surface shape that is inverted to the surface shape of an article having a curved surface on the surface and does not have a moth-eye pattern.
The process of preparing another article having the same surface shape as the article,
The process of forming a moth-eye pattern on the surface of the other article,
A step of applying a curable resin for an inversion type between the inversion type without a moth-eye pattern and the other article having a moth-eye pattern formed on the surface thereof.
After applying the curable resin for the reversing mold, the step of pressing the other article against the reversing mold without the moth-eye pattern, and
After the pressing, the step of curing the inversion type curable resin and
The method for producing an inverted type with a moth-eye pattern according to <15> or <16>.

<19> The step of forming a moth-eye pattern on the surface of the other article is
The step according to <18>, wherein a film having a moth-eye pattern is arranged between the other article and the inversion mold without the moth-eye pattern, and the other article and the inversion mold without the moth-eye pattern are pressed. Inverted manufacturing method with moth-eye pattern.

<20> The inverted manufacturing method with a moth-eye pattern according to <18> or <19>, wherein the other article is an article copy body in which the shape of the surface of the article is copied.

According to the present invention, a method for manufacturing an article with a moth-eye pattern capable of uniformly forming a moth-eye structure on an article having a curved surface on the surface, and an inversion type with a moth-eye pattern, a mold set, and an inversion type with a moth-eye pattern used in this manufacturing method. Manufacturing method can be provided.

This is an example of the method for manufacturing an article with a moth-eye pattern of the present invention. This is an example of a manufacturing method of an inverted type without a moth-eye pattern. This is an example of a method of imparting a moth-eye pattern to the surface of another article. This is an example of a manufacturing method of an inverted type with a moth-eye pattern. This is another example of a method for manufacturing an inverted type with a moth-eye pattern. It is a figure explaining the method of applying the film-forming material to which the LTCL method was applied. It is a figure explaining the method of manufacturing the article with a moth-eye pattern using the inversion type with a moth-eye pattern which has the thin-layer film forming material obtained by the LTIL method on the surface. It is an example of the mold set of the present invention. It is an inverted photograph with a moth-eye pattern produced in an example. It is a photograph of the article with a moth-eye pattern produced by Example 1. It is a photograph of the article with a moth-eye pattern produced by Example 2. It is a graph which shows the result of the reflectance on the surface of the article with a moth-eye pattern produced by Examples 1 and 2. It is a graph which shows the result of the transmittance of the article with a moth-eye pattern produced by Examples 1 and 2. It is a schematic diagram explaining the shape of the inverted type without a moth-eye pattern used in Example 3, (A) is a sectional schematic diagram, and (B) is a planar schematic diagram. It is a photograph of the region other than the lens portion in the inverted type with a moth-eye pattern obtained in Example 3. It is a photograph of a lens portion in the inverted type with a moth-eye pattern obtained in Example 3. It is a graph which shows the result of the reflectance of the reversal type with a moth-eye pattern obtained in Example 3. FIG. It is sectional drawing which explains the shape of the lens used in Example 4. FIG. It is a photograph of the lens portion in the lens with a moth-eye pattern obtained in Example 4. It is a graph which shows the result of the reflectance of the lens with a moth-eye pattern obtained in Example 4. FIG.

Hereinafter, an example of the embodiment of the present invention will be described in detail. However, the present invention is not limited to the following embodiments.
In the present specification, the numerical range indicated by using "-" indicates a range including the numerical values before and after "-" as the minimum value and the maximum value, respectively.

<Manufacturing method of goods with moth-eye pattern>
FIG. 1 shows an example of the method for manufacturing an article with a moth-eye pattern of the present invention, but the method for manufacturing an article with a moth-eye pattern of the present invention is not limited to this. Further, the shape, size, etc. of the members in the drawing are not limited to this.

In the method for manufacturing an article 100 with a moth-eye pattern of the present invention, a step of preparing an article 10 including a curved surface in a planned area to which a moth-eye pattern is applied (hereinafter, also referred to as an “article preparation step”) and a moth-eye pattern in the article 10 are described. A step of preparing an inverted mold 20 having a surface shape that is inverted to the shape of the planned region to be applied and having a moth-eye pattern 22 formed in the region of the inverted surface shape (hereinafter, also referred to as “inverted type preparation step with moth-eye pattern”). The step of applying the film-forming material 30 between the planned region to which the moth-eye pattern is applied in the article 10 and the moth-eye pattern 22 of the inverted type 20 (hereinafter, also referred to as “film-forming material applying step”). (A)) and a step of pressing the reversing mold 20 against the article 10 (hereinafter, also referred to as a “pressing step”; FIG. 1 (B)) after the film forming material applying step. The present invention may further have other steps.

In the method for manufacturing the article 100 with a moth-eye pattern of the present invention, the article 10 and the inverted type 20 with a moth-eye pattern have a corresponding relationship in surface shape, and are manufactured so as to have irregularities. Therefore, in the manufacturing method of the present invention, the moth-eye pattern 102 is uniformly applied on the surface of the article 10 as compared with the method of pressing with air pressure or a roll. Further, regardless of the surface shape of the article 10, the moth-eye pattern 102 is uniformly applied to the surface of the article 10.
Hereinafter, each step will be described.

(Goods preparation process)
In the method for manufacturing the article 100 with the moth-eye pattern of the present invention, first, the article 10 to which the moth-eye pattern is applied is prepared. The planned area to which the moth-eye pattern is applied in the article 10 includes a curved surface. Examples of the article 10 include a lens, a curved display, an instrument panel of an automobile having a curved surface, a showcase of an exhibition having a curved surface, a signage having a curved surface, and the like.

As described above, the article 10 may have a curved surface on the surface, and the function of the article is not particularly limited. For example, an automobile instrument panel having a curved surface, whether it is a lens that collects or bends light, or a curved display that absorbs or reflects a specific wavelength, has a curved surface. It may be a showcase for an exhibition or the like, a signage having a curved surface, or the like that allows light to pass through.

In the present invention, "including a curved surface" means that a curved surface may be present in at least a part of a region to which a moth-eye pattern is to be applied in the article 10, and the entire surface of the article 10 is a curved surface. However, a portion other than the curved surface may be included. Further, the surface of the article 10 may have two or more curved surfaces. The curved surface may be present on both the main surface and the back surface of the article 10. Further, the entire surface of the article 10 may be formed of a continuous curved surface, and for example, the shape of the article 10 may be spherical or ellipsoidal.

The curved surface may be a curved surface that projects outward like a convex lens or a curved surface that dents inward like a concave lens.
The curvature of the curved surface may be any, and even if the curved surface has a large curvature, the moth-eye structure can be uniformly formed.

According to the method of the present invention, the moth-eye structure can be uniformly formed even in the article 10 having a dent on the surface. Therefore, a portion other than the curved surface that can be included in the planned area to which the moth-eye pattern is applied may have a dent.
The area to which the moth-eye pattern is to be applied in the article 10 may include irregularities having a height or a depth of 1 μm or more. For example, the area to which the moth-eye pattern of the article 10 is to be applied may be embossed, or may have a step due to protrusions such as a plate, a prism, a cylinder, a pyramid, and a cone. good.

(Reversing type preparation process with moss eye pattern)
The inverted type 20 with a moth-eye pattern has a surface shape that is inverted to the shape of the region to which the moth-eye pattern is to be applied in the article 10, and the moth-eye pattern 22 is formed in the region of the inverted surface shape. As long as the inverted mold 20 with a moth-eye pattern having such a shape can be prepared, any method of manufacturing the inverted mold 20 with a moth-eye pattern may be used. For example, the first method shown in FIGS. 2 to 4 can be mentioned.

First, an inverted type 28 without a moth-eye pattern is prepared, which has a surface shape that is inverted to the shape of a region to which the moth-eye pattern is to be imparted in the article 10, but does not have a moth-eye pattern in the region of the inverted surface shape. As shown in FIG. 2, for example, the inverted type 28 without a moth-eye pattern can be obtained by molding the surface shape of the planned region to which the moth-eye pattern is applied in the article 10. Examples of the molding material 32 for forming the reversing mold 28 without a moth-eye pattern include a curable resin, and a photocurable resin or a thermosetting resin can be used. Specifically, as shown in FIG. 2 (A), the molding material 32 is applied to the area to which the moth-eye pattern is to be applied in the article 10, and as shown in FIG. 2 (B), the molding material 32 is applied to the article. When the molding material 32 is a curable resin, it is pressed against 10 and cured, so that an inverted mold 28 without a moth-eye pattern can be obtained. If the article 10 has light transmission such as a lens, a display, an instrument panel of an automobile having a curved surface, a showcase of an exhibition having a curved surface, a signage, etc., it is molded with a photocurable resin and a lens. Light can be emitted from the side, the display side, or the panel side, and it can be easily manufactured.

Next, as shown in FIG. 3, another article 12 having the same surface shape as the article 10 is prepared. As the other article 12, one of a plurality of articles may be used, and in this case, the material of the other article 12 is the same as the material of the article 10 to which the moth-eye pattern is applied. Alternatively, an article copy body in which the shape of the surface of the article 10 is copied may be used, and in this case, the material of the other article 12 does not have to be the same as the material of the article 10 to which the moth-eye pattern is applied. The article copy may be made from an inverted type 28 without a moth-eye pattern, which is obtained by molding the shape of the surface of the article 10. For example, an article copy can be produced by transcription by the UV-NIL method.

Then, the moth-eye pattern 23 is formed on the surface of the other article 12. For example, a method of using a film 24 having a moth-eye pattern and attaching the film 24 to the surface of another article 12 can be mentioned. At the time of attachment, as shown in FIG. 3 (A), a film 24 having a moth-eye pattern is arranged between the other article 12 and the inverted type 28 without a moth-eye pattern, and as shown in FIG. 3 (B), the other It is preferable to press the article 12 of No. 12 and the inverted type 28 without a moth-eye pattern. Since the surface shape of the inverted type 28 without the moth-eye pattern and the other article 12 have a corresponding relationship with each other and the unevenness is matched, the film 24 on the other article 12 is uniformly aligned with the surface of the other article 12. It is easily pressed and evenly attached to the other article 12. An adhesive (not shown) may be applied between the other article 12 and the film 24. When the adhesive is thermosetting, it is preferable to use a heater 40 or the like. On the other hand, when the adhesive is photocurable, an exposure machine (not shown) is used.

Examples of the material of the film 24 include PET (polystyrene terephthalate), PS (polystyrene), PP (polypropylene), PMMA (polymethyl methacrylate), PC (polycarbonate), PVA (polyvinyl alcohol), PE (polyester), and PUR. (Polyurethane) and the like.

The film 24 having a moth-eye pattern can be produced, for example, by transferring from a glassy carbon substrate on which the moth-eye pattern is formed.

On the other hand, as shown in FIG. 4A, the curable resin 34 for the inversion type is applied to the surface of the inversion type 28 without the moth-eye pattern.
The curable resin 34 for the inversion type may be photocurable or thermosetting. Examples of the curable resin 34 for inversion type include acrylic resin, epoxy resin, urethane resin, PDMS (polydimethylsiloxane) resin, solgel glass, epoxy resin and the like. When the thermosetting resin is gradually cured even at room temperature (25 ° C.), heating for curing is not essential.

Any method may be used to apply the curable resin 34 for the inversion type, and examples thereof include a dipping method, a printing method, a spin coating method, a brush coating method, a spray method, a doctor blade method, a roll coating method, and an inkjet method.

As shown in FIG. 4B, after pressing another article 12 having the moth-eye pattern 23 formed on the surface against the inversion type 28 without the moth-eye pattern to which the curable resin 34 for the inversion type is applied, the curability for the inversion type is obtained. The resin 34 is cured. As a result, the inverted type 20 with a moth-eye pattern is obtained.

Before pressing, a mold release agent may be applied to the moth-eye pattern 23 on the surface of the other article 12. By applying the mold release agent, it becomes easy to peel off the other article 12 from the reversing mold 20 with the moth-eye pattern after pressing. As the release agent, generally known ones can be used.

As another method for manufacturing the inverted mold 20 with a moth-eye pattern, for example, the second method shown in FIG. 5 can be mentioned. The second method shown in FIG. 5 is different from the first method shown in FIGS. 2 to 4 in that the method of applying the curable resin 34 for inversion type is different.

In the second method, first, an inverted type 28 without a moth-eye pattern and another article 12 are prepared. The inverted type 28 without a moth-eye pattern can be prepared by the method shown in FIG. 2 described above.

Then, as shown in FIG. 5A, a bulk curable resin 34 for inversion type is prepared. In FIG. 5A, the reversing type curable resin 34 is dropped onto the substrate to prepare the bulk reversing type curable resin 34, but the reversing type curable resin 34 is placed in a container and bulked. The curable resin 34 for inversion type may be prepared. When a container is used, it is preferable to use a container having a sufficiently larger area than the film 24 having a moth-eye pattern from the viewpoint of workability.

Next, as shown in FIG. 5B, the bulk inversion type curable resin 34 is opposed to the moth-eye pattern of the film 24 so as to be in contact with the bulk, and a roll or the like is used from the end of the film 24 having the moth-eye pattern. Immerse the bulk in the curable resin 34 for the reversing type so that the curable resin 34 for the reversing type adheres evenly to the moth-eye pattern of the film 24. Then, as shown in FIG. 5C, the film 24 having the moth-eye pattern is separated from the bulk curable resin 34 for inversion type.
Before attaching the inversion type curable resin 34, a mold release agent may be applied to the moth-eye pattern of the film 24 in advance.

Next, as shown in FIG. 5D, a film 24 having a moth-eye pattern in which the curable resin 34 for inversion type is attached to the moth-eye pattern is arranged between the inversion type 28 without the moth-eye pattern and the other article 12. do. Then, as shown in FIG. 5 (F), the resin 34 for inversion type is cured by pressing. When the inversion type curable resin 34 is photocurable, it is cured by using an exposure machine 42. On the other hand, when the curable resin 34 for inversion type is thermosetting, it is preferable to cure it using a heater (not shown). As a result, the inverted type 20 with a moth-eye pattern is obtained (FIG. 5 (G)).

In the first method shown in FIGS. 2 to 4, the curable resin 34 for the inversion type is directly applied to the inversion type 28 without the moth-eye pattern. On the other hand, in the second method shown in FIG. 5, the curable resin 34 for the inversion type is attached to the moth-eye pattern of the film 24 and then brought into contact with the inversion type 28 without the moth-eye pattern. In the second method, a required amount of the reversing type curable resin 34 adheres to the moth-eye pattern of the film 24 due to the adhesive force, surface tension, capillary phenomenon, etc. of the reversing type curable resin 34, and a larger amount of reversing is performed. The mold curable resin 34 is easily dropped by the bulk reversal mold curable resin 34. Therefore, in the second method shown in FIG. 5, a moth-eye pattern having a thin layer thickness can be formed on the inverted mold 28 as compared with the first method shown in FIGS. 2 to 4. The moth-eye pattern having a thin layer thickness tends to improve the followability to the surface shape of the inverted type and improve the performance as the inverted type.

In either of the first method and the second method, the inverted type 28 without the moth-eye pattern and the other article 12 having the moth-eye pattern 23 formed on the surface have a corresponding surface shape and are uneven. Therefore, the moth-eye pattern is uniformly pressed against the curable resin 34 for the inversion type on the inversion type 28 without the moth-eye pattern, and an even moth-eye pattern is formed on the surface of the inversion type 20.

(Membrane forming material application process)
In the film-forming material applying step, the film-forming material is applied between the planned region for forming the moth-eye pattern in the article 10 and the moth-eye pattern of the inverted type 20 (FIG. 1 (A)).
The film-forming material 30 is not particularly limited and is preferably a curable resin. The curable resin may be photocurable or thermosetting. Examples of the film forming material 30 include acrylic resin, epoxy resin, urethane resin, PDMS (polydimethylsiloxane) resin, solgel glass, epoxy resin and the like. When the thermosetting resin is gradually cured even at room temperature (25 ° C.), heating for curing is not essential.

Any method may be used for applying the film forming material 30, and examples thereof include a dipping method, a printing method, a spin coating method, a brush coating method, a spray method, a doctor blade method, a roll coating method, and an inkjet method.

It is preferable that the film-forming material 30 is applied as thinly as possible on the article 10. When the film-forming material 30 is applied thinly, the moth-eye pattern 102 formed on the article 10 is also thinned, so that the transmittance is improved, and the multiple reflections in the moth-eye pattern 102 are suppressed to improve the reflectance. The thickness of the film-forming material layer formed on the article 10 is preferably 10 μm or less, more preferably 5 μm or less, and further preferably 3 μm or less.

From the viewpoint of forming the film-forming material layer thinly, the viscosity of the film-forming material 30 is preferably 0.1 mPa · s to 10 Pa · s, more preferably 1 mPa · s to 1 Pa · s, and 5 mPa · s. It is more preferably s to 100 mPa · s.

As a method for applying the film-forming material 30 thinly, a so-called liquid transfer imprint lithography (LTIL) method can be applied. The LTIL method is a method of removing a part of the liquid phase coating film in the thickness direction to make the coating film thinner. In the present invention, the LTIL method can be applied as shown in FIG.

First, another article 12 having the same surface shape as the article 10 is prepared. As the other article 12 referred to here, one of a plurality of articles may be used as in the other articles used for producing the inverted mold 20 with a moth-eye pattern, or the shape of the surface of the article may be used. A copy of the article may be used.

Then, the film-forming material 30 is applied between the inverted mold 20 with a moth-eye pattern and the other article 12 (FIG. 6 (A)). It suffices if the film-forming material 30 exists between the reversing mold 20 with the moth-eye pattern and the other article 12, and even if the film-forming material 30 is applied to the reversing die 20 side with the moth-eye pattern, it is on the other article 12 side. It may be given, or it may be given to both. From the viewpoint of reducing the thickness of the film forming material 30, it is preferable to apply it to only one of them. Any method of applying the film forming material 30 may be used.

After applying the film-forming material 30, the reversing mold 20 with a moth-eye pattern and the other article 12 are pressed (FIG. 6 (B)). As a result, the film-forming material 30 spreads and fits on the surfaces of both the inverted type 20 with a moth-eye pattern and the other article 12.
Then, the inverted mold 20 with a moth-eye pattern and the other article 12 are separated from each other (FIG. 6 (C)). Then, the film-forming material layer of the liquid phase is separated in the thickness direction, a part 30A of the film-forming material moves to the other article side, and a part 30B of the film-forming material remains on the surface of the inverted type with a moth-eye pattern. do. A thin film-forming material 30B layer is formed on the surface of the inverted mold 20 with a moth-eye pattern.

Before the pressing step described later, a mold release agent may be applied to the moth-eye pattern of the inverted mold 20. By applying the release agent, the reversing mold 20 can be easily peeled off from the article 10 after the pressing step. As the release agent, generally known ones can be used.

(Pressing process)
In the pressing step, the article 10 and the inverted die with a moth-eye pattern are pressed with the film-forming material 30 present between the article 10 and the inverted die 20 with a moth-eye pattern (FIG. 1 (B)). At this time, if the layer thickness of the film-forming material 30 is thin, the moth-eye pattern formed on the article can also be thinly formed. Therefore, as shown in FIG. 7, the thin film-forming material 30B is surfaced by the LTIL method. It is preferable to press the inverted mold 20 with a moth-eye pattern (FIG. 6 (C)) formed in the article 10 against the article 10.

The pressing time in the pressing step is not particularly limited, and for example, pressing is preferably performed for 1 second to 10 minutes, more preferably 3 seconds to 3 minutes, and even more preferably 5 seconds to 1 minute. INDUSTRIAL APPLICABILITY According to the present invention, the time can be shortened as compared with the conventional method of pressing by air pressure or a roll. Generally, the pressing time by air pressure needs to be 1 minute or more, but in the present invention, it may be about 10 seconds.

The pressing step may be performed at room temperature (for example, 25 ° C.) or under heating. When heating, it is preferably performed at 30 ° C. to 300 ° C., more preferably 40 ° C. to 200 ° C., and even more preferably 50 ° C. to 150 ° C.

(Other processes)
When a curable resin is used as the film-forming material 30, it may further have a step of curing the curable resin after the pressing step. If the curable resin is photocurable, it may be irradiated with light, and if it is thermosetting, it may be heated. In the case of using a thermosetting resin, when heating is performed in the pressing step, the curing step may be omitted, or a further curing step may be performed from the viewpoint of sufficiently performing the curing reaction. The light irradiation condition and the heating condition can be appropriately set according to the type and amount of the curable resin to be used.

The inversion type 20 with a moth-eye pattern after the pressing step can be reused by removing the film-forming material 30 if the film-forming material 30 remains on the surface. Examples of the method for removing the film-forming material 30 from the inversion type 20 with a moth-eye pattern include a method of immersing the film-forming material 30 in a solvent to dissolve the film-forming material 30. It is preferable that the inverted type 20 with a moth-eye pattern after being immersed in the solvent is dried to remove the solvent.

When applying a moth-eye pattern to both sides of the article 10, the inverted type 20A and 20B with a moth-eye pattern corresponding to the surface shape of each surface are prepared, and one surface of the article 10 and the inverted type 20A with a moth-eye pattern are prepared. After applying the film-forming material to the space between the article 10 and between the other surface of the article 10 and the reversing die 20B with the moth-eye pattern, the reversing die 20A and 20B with the moth-eye pattern may be pressed against the article 10.

Further, in the case of imparting a moth-eye pattern to the entire surface of the article 10, the entire surface of the article 10 is divided into two or more, and the inverted type 20 (1) with a moth-eye pattern corresponding to the shape of each of the divided surfaces is used. 20 (2), ... 20 (n-1), 20 (n) may be prepared. n represents the number of divisions and is an integer of 2 or more. A film forming material 30 is added between the article 10 and the inverted mold 20 (1), 20 (2), ... 20 (n-1), 20 (n) with a moth-eye pattern corresponding to the shape of the divided surface. After that, the inverted type 20 (1), 20 (2), ... 20 (n-1), 20 (n) with a moth-eye pattern may be pressed against the article 10. In the pressed state, the reversing mold 20 is arranged around the entire circumference of the article 10 around the article 10. Since the reversing mold 20 is divided into two or more, the article 10 arranged at the center can be taken out after pressing.

<Items with moss eye pattern>
According to the manufacturing method of the present invention, even if the surface on which the moth-eye pattern is formed is a curved surface, the moth-eye structure can be uniformly formed. It is also possible to form a fine moth-eye pattern. For example, the height of the moth-eye pattern can be 50 nm to 1000 nm. Further, the pitch of the moth-eye pattern can be set to 20 nm to 1000 nm. The height and pitch of the moth-eye pattern can be appropriately designed according to the desired function.
The height and pitch of the moth-eye pattern can be measured with an electron microscope.

The thickness of the layer having the moth-eye pattern is preferably as thin as possible from the viewpoint of light transmission and the like. For example, the thickness of the layer having a moth-eye pattern is preferably 10 μm or less, more preferably 5 μm or less, and even more preferably 3 μm or less. Here, the "thickness of the layer having the moth-eye pattern" means the total thickness of the layer provided for forming the moth-eye pattern on the surface of the article, and means the total thickness of the portion formed of the film-forming material.

The surface reflectance of the article with the moth-eye pattern can be 0.5% or less in the visible light region, and can also be 0.1% or less.

<Inverted type with moth-eye pattern and its manufacturing method>
The inverted type 20 with a moth-eye pattern of the present invention is for imparting a moth-eye pattern 102 to the surface of an article 10 having a curved surface on the surface, and has a surface shape inverted to the surface shape of the article 10 having a curved surface on the surface. The moth-eye pattern 22 is provided in the area of the surface shape that is inverted. Details of the inverted mold 20 with a moth-eye pattern and a method for manufacturing the same are as described in the above-mentioned method for manufacturing an article with a moth-eye pattern.

By using the inverted type 20 with a moth-eye pattern of the present invention, it is possible to uniformly form a moth-eye structure on an article 10 having a curved surface on the surface.

<Type set>
The mold set of the present invention is for imposing a moth-eye pattern 102 on an article 10 having a curved surface on the surface. An example of the mold set of the present invention is shown in FIG. 8, but the mold set of the present invention is not limited thereto. The mold set includes an article copy 14 that copies the shape of the surface of the article 10 and the above-mentioned inverted mold 20 with a moth-eye pattern. The number of the inverted type 20 with a moth-eye pattern may be one or a plurality of two or more with respect to one article copy body 14.

An example of a mold set including two inverted molds 20 with a moth-eye pattern for one article copy 14 is a mold set for imparting a moth-eye pattern to both sides of the article 10. In this case, the article copy body 14 which copied the shape of the surface of the article 10 and the inverted types 20A and 20B with a moth-eye pattern corresponding to each surface of the article 10 are included.

An example of a mold set including a plurality of inverted molds 20 with a moth-eye pattern for one article copy 14 is a mold set in which a moth-eye pattern is imparted to the entire surface of the article 10. In this case, the article copy body 14 which copied the shape of the surface of the article 10 and the inverted type 20 (1), 20 with a moth-eye pattern corresponding to each of the divided surfaces by dividing the entire surface of the article 10 into two or more. (2), ... 20 (n-1), 20 (n), and the like.

The details of the article copy 14 and the inverted type 20 with the moth-eye pattern are as described in the method for manufacturing the article with the moth-eye pattern.

The mold set of the present invention can be suitably used when applying the LTIL method. Specifically, the film-forming material 30 is applied between the article copy 14 in the mold set and the inversion type 20 with the moth-eye pattern, pressed in this state, and then the inversion type 20 with the moth-eye pattern and the article copy 14 are applied. And pull apart. Then, a thin layer of the film-forming material 30 is formed on the surface of the inverted type 20 with a moth-eye pattern. By pressing this against the article 10, a thin moth-eye pattern can be formed on the article 10.

The article copy 14 and the inverted mold 20 with a moth-eye pattern in the mold set can be reused by removing the film-forming material 30 if the film-forming material 30 remains on the respective surfaces. The method for removing the film-forming material 30 is as described in the above-mentioned method for manufacturing an article with a moth-eye pattern.

Hereinafter, the present invention will be specifically described with reference to Examples, but the present invention is not limited to these Examples.

[Example 1]
(Preparation of inverted type without moss eye pattern)
Acrylic photocurable resin is dropped on a plastic aspherical lens, a polyester film is placed on it, pressed from the polyester film side, and a UV irradiation device (manufactured by Panasonic Corporation, product name: lamp type SPOT type UV curing device) The acrylic photocurable resin was cured by irradiating 210 mJ / cm ² with Aicure UP50, wavelength: 365 nm). Then, the lens was peeled off to prepare an inverted type without a moth-eye pattern.

(Preparation of lens copy)
Acrylic photocurable resin is dropped on a polyester film, an inverted type without a moth-eye pattern is placed on it, pressed from the inverted type without a moth-eye pattern, and irradiated with 210 mJ / cm ² by the above-mentioned UV irradiation device to acrylic. The photocurable resin was cured. Then, the inverted type without the moth-eye pattern was peeled off to produce a copy in which the surface shape of the lens was copied.

(Preparation of sheet with moss eye pattern)
An acrylic photocurable resin is dropped on a glassy carbon substrate (manufactured by Tokai Carbon Co., Ltd., product name GC20SS) on which a moth-eye pattern is formed, a polyester film is placed on the glassy carbon substrate, and the polyester film is pressed from the polyester film side. The acrylic photocurable resin was cured by irradiating 210 mJ / cm ² with a UV irradiation device. Then, the glassy carbon substrate was peeled off to prepare a sheet having a moth-eye pattern.

(Preparation of copy with moss eye pattern)
A sheet having a moth-eye pattern is sandwiched between the prepared copy and the inversion type without a moth-eye pattern, heated to 100 ° C. and pressed from the inversion type without a moth-eye pattern, and the inversion type without a moth-eye pattern is peeled off to remove the moth-eye pattern. A copy was made.

(Preparation of inverted type with moss eye pattern)
An acrylic photocurable resin was dropped onto an inverted type without a moth-eye pattern, a copy with a moth-eye pattern was pressed onto the copy, and the acrylic photocurable resin was cured by irradiating 210 mJ / cm ² with the above-mentioned UV irradiation device. .. Then, the copy with the moth-eye pattern was peeled off to prepare an inverted type with the moth-eye pattern.
The obtained inverted photographs with a moth-eye pattern are shown in FIGS. 9A and 9B. 9 (B) is a partially enlarged photograph of FIG. 9 (A). As shown in FIGS. 9A and 9B, a moth-eye pattern was formed on the inverted surface.

(Making a lens with a moth-eye pattern)
0.02 ml of acrylic photocurable resin was dropped onto the lens, an inverted mold with a moth-eye pattern was pressed onto the lens, and 210 mJ / cm ² was irradiated with the above-mentioned UV irradiation device to cure the acrylic photocurable resin. Then, the inversion type with the moth-eye pattern was peeled off to prepare a lens with the moth-eye pattern.

The photographs of the obtained lens with a moth-eye pattern are shown in FIGS. 10 (A) to 10 (D). 10 (A) is a perspective photograph, FIG. 10 (B) is a cross-sectional photograph, FIG. 10 (C) is an enlarged plan photograph of the lens surface, and FIG. 10 (D) is an enlarged perspective photograph of the lens surface. be.
As shown in FIGS. 10A to 10D, a moth-eye pattern was formed on the lens surface. This moth-eye pattern had a pitch size of 66 nm, a pattern diameter of 52 nm, a height of 181 nm, and a total thickness of an acrylic photocurable resin of 223 μm.

[Example 2]
A lens copy and an inverted type with a moth-eye pattern were prepared in the same manner as in Example 1.
0.02 ml of an acrylic photocurable resin was dropped onto the inverted mold with a moth-eye pattern, a lens copy was pressed from above, and then the lens copy and the inverted mold with a moth-eye pattern were peeled off. As a result, a part of the acrylic photocurable resin moved to the lens copy, and a part remained in the inverted type with the moth-eye pattern.

An inversion type with a moth-eye pattern having a layer of an acrylic photocurable resin formed on the surface was pressed against a lens and irradiated with 210 mJ / cm ² by the above-mentioned UV irradiation device to cure the acrylic photocurable resin. Then, the inversion type with the moth-eye pattern was peeled off to prepare a lens with the moth-eye pattern.

The photographs of the obtained lens with a moth-eye pattern are shown in FIGS. 11A to 11D. 11 (A) is a perspective photograph, FIG. 11 (B) is a cross-sectional photograph, FIG. 11 (C) is an enlarged plan photograph of the lens surface, and FIG. 11 (D) is an enlarged perspective photograph of the lens surface. be.
As shown in FIGS. 11A to 11D, a moth-eye pattern was formed on the lens surface. This moth-eye pattern had a pitch size of 72 nm, a pattern diameter of 46 nm, a height of 175 nm, and a total thickness of an acrylic photocurable resin of 2.7 μm. Compared with Example 1, the thickness could be reduced to about 1/100.

<Evaluation>
The reflectance and transmittance of the lenses with the moth-eye pattern obtained in Example 1 and Example 2 were measured. The result of reflectance is shown in FIG. 12, and the result of transmittance is shown in FIG.
Good results were obtained that the lens with the moth-eye pattern obtained in Example 2 had a lower reflectance and a higher transmittance than the lens with a moth-eye pattern obtained in Example 1.

[Example 3]
(Preparation of inverted type with moss eye pattern)
An inverted type without a moth-eye pattern was prepared in the same manner as in Example 1. However, the lens shape is different from that of the first embodiment. As a lens, a plastic aspherical lens CAW110 manufactured by THOLABS was used. 14A and 14B are schematic views illustrating the shape of the inverted type without a moth-eye pattern, FIG. 14A is a schematic cross-sectional view, and FIG. 14B is a schematic plan view.

Next, a sheet having a moth-eye pattern was prepared in the same manner as in Example 1.
An acrylic photocurable resin was dropped onto the dummy substrate, and a sheet having a moth-eye pattern was pressed against the acrylic photo-curable resin with a roll from the side opposite to the moth-eye pattern surface. As a result, the acrylic photocurable resin was thinly applied to the sheet having the moth-eye pattern.

A sheet having a moth-eye pattern with a thin layer of acrylic photocurable resin is placed between the inverted type without moth-eye pattern and the copy, pressed against each other, and irradiated with 210 mJ / cm ² by the above-mentioned UV irradiation device to acrylic. The photocurable resin was cured. Then, the copy and the sheet having the moth-eye pattern were peeled off to prepare an inverted type with a moth-eye pattern.

The obtained inverted photographs with a moth-eye pattern are shown in FIGS. 15 (A) to 15 (D) and FIGS. 16 (A) to 16 (E). 15 (A) to (D) are photographs of the area other than the lens portion, and FIGS. 16 (A) to 16 (E) are photographs of the area of the lens portion.
15 (A) is a perspective photograph, FIG. 15 (B) is an enlarged photograph of the surface of the outer edge portion, FIG. 15 (C) is an enlarged photograph of the surface of the bottom surface portion, and FIG. 15 (D) is an enlarged photograph. It is an enlarged photograph of the surface of the inner edge.
16 (A) is an enlarged photograph of the surface of the central portion A in the lens portion, and FIGS. 16 (B) to 16 (E) are enlarged photographs of the surface at points B to E in the schematic plan view of FIG. 14 (B). It is a photograph.
As shown in FIGS. 15 and 16, fine moth-eye patterns were uniformly formed on the entire surface of the inverted type.

The reflectance of the inverted type with a moth-eye pattern obtained in Example 3 was measured, and the results are shown in FIG. In addition, as a reference, the reflectance of the inverted type without the moth-eye pattern was also measured and shown in FIG.
The inverted type with a moth-eye pattern obtained in Example 3 had a lower reflectance than the inverted type without the moth-eye pattern, and good results were obtained.

[Example 4]
(Making a lens with a moth-eye pattern)
Same as in Example 2 except that the lens having the shape shown in the schematic cross-sectional view of FIG. 18 (plastic aspherical lens CAW110 manufactured by THOLABS) and the inverted type with a moth-eye pattern produced in Example 3 were used. Then, a lens with a moth-eye pattern was produced.

The photographs of the obtained lens with a moth-eye pattern are shown in FIGS. 19A to 19E. 19 (A) is an enlarged photograph of the surface of the central portion A in the lens portion, and FIGS. 19 (B) to 19 (E) are lens surfaces corresponding to points B to E in the schematic plan view of FIG. 14 (B). It is an enlarged photograph of.
As shown in FIG. 19, a fine moth-eye pattern was uniformly formed on the entire surface of the lens.

The reflectance of the lens with the moth-eye pattern obtained in Example 4 was measured, and the results are shown in FIG. In addition, as a reference, the reflectance of a lens to which the moth-eye pattern is not applied was also measured and shown in FIG. 20.
The lens with the moth-eye pattern obtained in Example 4 had a significantly lower reflectance than the lens without the moth-eye pattern, and could be reduced to 0.4% or less.

10 Inverted type 10 Article 12 Other articles 14 Article copy 20 Inverted type 22, 23, 102 Moss eye pattern 24 Film with moth eye pattern 28 Inverted type without moth eye pattern 30 Film forming material 30A, 30B Part of film forming material 32 type Material 34 Curable resin for reversing type 40 Heater 42 Exposure machine 100 Article with moss eye pattern

Claims (16)

The process of preparing an article containing a curved surface in the planned area to which the moth-eye pattern is applied, and
A step of preparing an inverted mold with a moth-eye pattern having a surface shape that is inverted to the shape of the planned region of the article and having a moth-eye pattern in the region of the inverted surface shape.
A step of preparing another article A having the same surface shape as the planned area of the article,
A film-forming material is applied between the inversion type with a moth-eye pattern and the other article A, and after pressing the inversion type with the moth-eye pattern and the other article A, the inversion type with the moth-eye pattern and the other article. A film-forming material applying step in which a part of the film-forming material is moved to the other article A side and a part of the film-forming material is left on the surface of the inverted mold with a moth-eye pattern. When,
A step of pressing the inverted mold with a moth-eye pattern and the article with a part of the film-forming material remaining on the surface, and a step of pressing the article.
A method for manufacturing an article with a moth-eye pattern. The step of preparing the inverted mold with the moth-eye pattern is
A step of preparing an inverted type without a moth-eye pattern, which has a surface shape that is inverted to the shape of the planned region of the article, but does not have a moth-eye pattern.
The step of preparing another article B having the same shape as the article and the planned area,
The step of forming a moth-eye pattern on the surface of the other article B,
A step of applying a curable resin for an inversion type between the inversion type without a moth-eye pattern and the other article B having a moth-eye pattern formed on the surface thereof.
After applying the curable resin for the reversing mold, the step of pressing the other article B onto the reversing mold without the moth-eye pattern, and
After the pressing, the step of curing the inversion type curable resin and
The method for manufacturing an article with a moth-eye pattern according to claim 1. The step of forming a moth-eye pattern on the surface of the other article B is
2. The second aspect of the present invention comprises a step of arranging a film having a moth-eye pattern between the other article B and the inversion type without the moth-eye pattern, and pressing the other article B and the inversion type without the moth-eye pattern. The method for manufacturing an article with a moth-eye pattern described. The method for manufacturing an article with a moth-eye pattern according to claim 2 or 3, wherein the other article B is an article copy body in which the surface shape of the article is copied. The planned area for imparting a moth-eye pattern exists on both sides of the article.
A step of preparing an inverted type A having a surface shape inverted to the shape of the planned region on one surface of the article and having a moth-eye pattern in the inverted surface shape region.
A step of preparing an inverted type B having a surface shape inverted to the shape of the planned region on the other surface of the article and having a moth-eye pattern in the inverted surface shape region.
The film-forming material application step is performed on at least one of the planned area of the article and the moth-eye pattern of the inverted type A, and between the planned area of the article and the moth-eye pattern of the inverted type B. And the process to do
The article with a moth-eye pattern according to any one of claims 1 to 4, further comprising a step of pressing the inverted mold A and the inverted mold B against the article after applying the film-forming material. Manufacturing method. The moth-eye pattern according to any one of claims 1 to 5, wherein the article is a lens, a curved display, an instrument panel of an automobile having a curved surface, a showcase having a curved surface, or a signage having a curved surface. Manufacturing method of goods. The method for producing an article with a moth-eye pattern according to any one of claims 1 to 6, wherein the film-forming material contains a curable resin. The method for producing an article with a moth-eye pattern according to claim 7, further comprising a step of curing the curable resin after the pressing step. The method for producing an article with a moth-eye pattern according to any one of claims 1 to 8, wherein the film-forming material has a viscosity of 0.1 mPa · s to 10 Pa · s. In the step of pressing the inverted mold with the moth-eye pattern on the article after applying the film-forming material,
The method for manufacturing an article with a moth-eye pattern according to any one of claims 1 to 9, wherein the product is pressed at a temperature of 25 ° C to 300 ° C. In the step of pressing the inverted mold with the moth-eye pattern on the article after applying the film-forming material,
The method for manufacturing an article with a moth-eye pattern according to any one of claims 1 to 10, wherein the article is pressed for 1 second to 10 minutes. The method for manufacturing an article with a moth-eye pattern according to any one of claims 1 to 11, wherein the height of the moth-eye pattern is 50 nm to 1000 nm. The method for manufacturing an article with a moth-eye pattern according to any one of claims 1 to 12, wherein the pitch of the moth-eye pattern is 20 nm to 1000 nm. A method for manufacturing an inverted type with a moth-eye pattern for imparting a moth-eye pattern to the surface of an article, which has a surface shape that is inverted to the surface shape of an article having a curved surface on the surface and has a moth-eye pattern in a region of the inverted surface shape. And
A process of preparing an inverted type without a moth-eye pattern, which has a surface shape that inverts the surface shape of an article having a curved surface on the surface and does not have a moth-eye pattern.
The step of preparing another article B having the same surface shape as that of the article,
The step (1) of forming a moth-eye pattern on the surface of the other article B,
A step (2) of applying a curable resin for an inversion type between the inversion type without a moth-eye pattern and the other article B having a moth-eye pattern formed on the surface thereof.
After applying the curable resin for the reversing mold, the step of pressing the other article B onto the reversing mold without the moth-eye pattern, and
After the pressing, the step of curing the inversion type curable resin and
Have,
From the step (1) to the step (2),
A bulk curable resin for inversion type and a film having a moth-eye pattern are prepared, and the moth-eye pattern in the film having the moth-eye pattern is opposed to the bulk inversion-type curable resin so as to be in contact with the moth-eye pattern. After attaching the curable resin for use, the film having the moth-eye pattern is separated from the bulk curable resin for inversion type.
A method for manufacturing an inverted type with a moth-eye pattern, which comprises a step of arranging a film having a moth-eye pattern on which a curable resin for an inversion type is attached to the moth-eye pattern between the other article B and the inverted type without the moth-eye pattern. The inverted manufacturing method with a moth-eye pattern according to claim 14, wherein the article is a lens, a curved display, an instrument panel of an automobile having a curved surface, a showcase having a curved surface, or a signage having a curved surface. The inverted manufacturing method with a moth-eye pattern according to claim 14, wherein the other article B is an article copy body in which the shape of the surface of the article is copied.

Images