Process for producing microconfiguration transfer sheet and apparatus therefor

Abstract

A process for producing a sheet and apparatus therefor that in the operation of heating a sheet substratum and a metal mold with fine uneven configuration, bringing them into mutual contact and pressuA process for producing a sheet and apparatus therefor that in the operation of heating a sheet substratum and a metal mold with fine uneven configuration, bringing them into mutual contact and pressurizing the same so as to form the fine uneven configuration on a surface of the sheet substratum, avoid transfer failure attributed to air trapping at the transfer face between the metal mold and therizing the same so as to form the fine uneven configuration on a surface of the sheet substratum, avoid transfer failure attributed to air trapping at the transfer face between the metal mold and thesheet substratum to thereby obtain a sheet having the desired fine uneven configuration formed on its surface. There are provided a process for producing a microconfiguration transfer sheet, and apparsheet substratum to thereby obtain a sheet having the desired fine uneven configuration formed on its surface. There are provided a process for producing a microconfiguration transfer sheet, and apparatus therefor, comprising, in the microconfiguration transfer sheet producing operation including heating a sheet substratum and a metal mold with fine uneven configuration, bringing them into mutualatus therefor, comprising, in the microconfiguration transfer sheet producing operation including heating a sheet substratum and a metal mold with fine uneven configuration, bringing them into mutualcontact and pressurizing the same so as to form the fine uneven configuration on a surface of the sheet substratum, carrying out the configuration formation while changing the planarity of a configuracontact and pressurizing the same so as to form the fine uneven configuration on a surface of the sheet substratum, carrying out the configuration formation while changing the planarity of a configuration forming face consisting of at least one, or a combination, of a pair of pressurization plates or metal molds arranged so as to apply pressure to the sheet substratum and the metal mold.tion forming face consisting of at least one, or a combination, of a pair of pressurization plates or metal molds arranged so as to apply pressure to the sheet substratum and the metal mold.

Description

Technical field

[0001] The present invention relates to a method and apparatus for manufacturing a sheet having the fine three-dimensional shape on the surface by transferring the fine shape. Background technique

[0002] As a method of forming fine concavities and convexities and other three-dimensional shapes on the surface of materials such as resin sheets, a method of transferring the three-dimensional shapes of concavities and convexities to the resin sheet by pressing the resin sheet and other materials with a heated mold with fine concavities and convexities It is already known (Patent Documents 1 to 2).

[0003] However, when using this method to transfer and form fine shapes on a large-area resin sheet, there will be a problem that the transfer surface squeezes air between the mold and the processed sheet, and the fine three-dimensional shapes cannot be completely transferred. , The transfer effect is poor.

[0004] This problem of squeezing in air can occur in the case of...

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