Patent ID: 7682541

Claim:
A manufacturing method of a microchemical chip made of a resin and having a micro channel, the method comprising: etching into a metal support substratum a pattern defining the boundaries of a unit mold, forming a photoresist film over the surface of one side of the metal support substratum, stacking a channel forming photomask over the photoresist film, forming a flat-sheet mold having a minute-structure photoresist pattern over the metal support substratum by photofabrication technology, disposing the flat-sheet mold or a unit mold obtained by dividing the flat-sheet mold on the bottom of a contour forming frame for resin molding, pouring a resin into the contour forming frame for resin molding, curing the resin to form a resin structure having a micro channel formed by the mold, and attaching the resin structure having a micro channel formed therein to a flat sheet serving as a lid of the micro channel.