JP2007007988A5 - - Google Patents

Claims (17)

A method for producing a fine structure in which a fine structure portion having a fine structure surface is formed in an arbitrary pattern on the surface of a substrate,
On the surface of the base material, a coating solution made of a reactive curable resin having light permeability is applied in a predetermined pattern and a predetermined film thickness to form a resin coating of the reactive curable resin,
When the resin coating is in an uncured state, the reversible transfer mold having a reversal microstructure surface corresponding to the microstructure surface of the microstructure is in close contact with the reversal microstructure surface and the resin coating. On the base material,
A method for producing a microstructure, comprising peeling the transfer mold from the substrate after the resin coating is cured.   The method of claim 1, wherein the microstructured surface has a lens structure.   The method according to claim 1, wherein the fine structure surface comprises an aggregate of fine prism patterns. The fine prism pattern is a linear triangular prism, a pseudo-triangular prism in which either a prism apex angle of a linear triangular prism, an angle between adjacent triangles, or both are rounded, or those 3 5. A prism having a shape corresponding to one obtained by removing a part from a square prism or a pseudo-triangular prism, a kamaboko prism, a pyramid triangular pyramid or quadrangular pyramid prism, or a combination thereof. 3. The method according to 3 .   5. The method according to claim 4, wherein in the fine prism pattern, the pitch p of the prism is 1 mm or less and the apex angle α is 150 ° or less. The fine prism patterns, stripes, grid, arrow feather, square, parallelogram, claim 3-5, characterized in that it is applied to the surface of the circle or the substrate in a pattern of a combination thereof 2. The method according to item 1.   The method according to claim 1, wherein the resin coating is cured by aging after the transfer mold is overlaid on the substrate.   The method according to claim 1, wherein the substrate is made of a transparent, translucent or opaque material.   The method according to claim 1, wherein the reaction curable resin of the coating solution is thermosetting or photocurable.   The method according to claim 1, wherein the resin coating is formed with a film thickness (dry film thickness) of 5 to 300 μm.   The method according to claim 1, wherein the transfer mold is made of a flexible plastic film having a reverse microstructured surface on the entire surface thereof.   The method according to claim 11, wherein the plastic film is a polyethylene film, a polypropylene film, a polyethylene terephthalate film, a polybutylene terephthalate film, or a polymethylpentene film.   The method according to claim 1, wherein the reaction curable resin is a urethane resin.   The method according to claim 1, wherein the reaction curable resin coating solution is a two-component curable urethane clear paint.   The method according to claim 1, wherein the reactive curable resin coating solution is applied by screen printing.   The fine structure by which the fine structure part which each was manufactured by the method of any one of Claims 1-15 and which has a fine structure surface was formed in the surface of the base material with arbitrary patterns. The microstructure according to claim 16 , wherein the microstructure is an inner sheet for an automobile lamp.