Filter manufacturing method

Abstract

The present invention provides a method for efficiently and uniformly manufacturing a laminate that has a layer of a polymer coating film in which a plurality of through-holes having a specific shape are formed.　This method for manufacturing a laminate having a layer of a polymer coating film in which a plurality of through-holes having a specific shape are formed comprises arranging a mold in which a plurality of recesses are formed in one surface thereof and the opening shape of the recesses is the specific shape of the through-holes in the polymer coating film, applying a coating material to the surface of the mold in which the recesses are formed, causing the coating material applied to the recess portions to drop into the recesses and drying the coating material while causing the coating material applied to the portion other than the recesses to remain on the surface of the mold to form a polymer coating film in which the portions corresponding to the recesses become through-holes, pressing a support on the mold via the polymer coating film, and peeling the polymer coating film from the mold together with the support.

Claims

1. A method for manufacturing a filter comprising a laminate having a polymer coating layer in which multiple through-holes of a specific shape are formed, A mold is arranged in which multiple recesses are formed on one side, and the opening shape of the recesses is a specific shape of the through-hole in the polymer coating. The coating material is applied to the surface of the mold where the recess is formed, leaving the coating material applied to the parts other than the recess on the surface of the mold, while dropping the coating material applied to the recess into the recess. The coating material is dried to form a polymer film in which the portions corresponding to the recesses are through holes. A support having through-holes larger than the cross-sectional area of ​​the through-holes in the polymer film is pressed onto the mold via the polymer film. The polymer film is peeled off the mold together with the support, and a filter is obtained which is composed of a laminate consisting of the support and the polymer film. A method for manufacturing filters.

2. A method for manufacturing a filter made of a polymer film having a plurality of through-holes of a specific shape, A mold is arranged in which multiple recesses are formed on one side, and the opening shape of the recesses is a specific shape of the through-hole in the polymer coating. The coating material is applied to the surface of the mold where the recess is formed, leaving the coating material applied to the parts other than the recess on the surface of the mold, while dropping the coating material applied to the recess into the recess. The coating material is dried to form a polymer film in which the portions corresponding to the recesses are through holes. The support is pressed against the mold via the polymer film, The polymer film is peeled off the mold together with the support to obtain a laminate consisting of the support and the polymer film. The polymer film is peeled off from the surface of the support of the laminate to obtain a polymer thin film having a plurality of through-holes of a specific shape. A method for manufacturing filters.

3. The method for manufacturing a filter according to claim 1 or 2, wherein the opening shape of the recess is circular, elliptical, or polygonal.

4. A method for manufacturing a filter according to any one of claims 1 to 3, wherein the support has adhesive properties.

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