Manufacturing method of roll mold and roll mold

Abstract

Provided are: a roll mold manufacturing method that makes it possible to use a roll master multiple times; and a roll mold manufactured using said method. A roll master (10) obtained by forming a relief pattern to be transferred on the inner wall surface forming the cylindrical hollow section is prepared. A metal layer (20) is deposited on the inner wall surface (10a). A separation-assisting layer (30) having a thermal expansion coefficient larger than the thermal expansion coefficient of the metal layer (20) is formed on at least one end of the surface of the metal layer (20) in the inner wall surface cylindrical axis (A) direction. With the roll master (10) in an environment with a lower temperature than the temperature during formation of the metal layer (20) and the separation-assisting layer (30), the metal layer (20) and the separation-assisting layer (30) are allowed to contract more than the roll master (10) to separate the metal layer (20) from the roll master (10). The laminate (40) of the metal layer (20) and the separation-assisting layer (30) is withdrawn from the roll master (10) to produce a roll mold provided with a laminate (40) with the metal layer (20) as the outermost surface and a relief pattern (25) complementary to the relief pattern (15) on the outermost surface.

Description

technical field [0001] The present invention relates to a method for manufacturing a roll-shaped mold (roll mold) having a transfer pattern on its surface, that is, minute unevenness, and a roll mold manufactured by the method. Background technique [0002] In recent years, nano-imprint (Nano-imprint) using a web handling technology such as roll-to-roll has been proposed. For example, such nanoimprinting refers to the process of preparing a surface with fine grains on the surface during the transport route between a discharge device that discharges a sheet (such as a resin film, an inorganic substrate, etc.) and a winding device that winds up the sheet. The roller mold with a concave-convex pattern (also referred to as a mold roll or a stamper roll) conveys the sheet from the feeding device to the winding device while bringing the roller mold into contact with the processed surface of the sheet. Thereby, it is possible to continuously and efficiently emboss a resin film or ...

AI Technical Summary

Problems solved by technology

Therefore, the methods described in Patent Documents 1 to 3 have the following problems: only one roll mold replica can be made from one roll original plate, and the production efficiency is low.

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