Liquid-repellent plastic molded body and method for producing the same
AssigneeToyo Seikan Group Holdings, Ltd.
InventorsTsutomu IWASAKI, Masaki AOYA, Ryuuji OONUKI, Masahiro KUNINORI
Life of this patent
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Abstract
A liquid-repellent plastic molded body 1 according to the present invention has a liquid-repellent surface. The liquid-repellent surface has a re-entrant structure surface formed by an array of pillars 20 each having a head portion 20a with an enlarged diameter. At least a part of the re-entrant structure surface has a fluorine-containing surface in which fluorine atoms are distributed.
Claims15
A liquid-repellent plastic molded body having a liquid-repellent surface,
- wherein the liquid-repellent surface has a re-entrant structure surface formed by an array of pillars each having a head portion with an enlarged diameter, and
- at least a part of the re-entrant structure surface has a fluorine-containing surface in which fluorine atoms are distributed.
A method for producing a liquid-repellent plastic molded body comprising the steps of:
- preparing a plastic molded body molded into a predetermined shape and a transfer mold having, as a transfer surface, a rugged surface formed by an array of straight body-shaped protruded columnar portions;
- transferring the rugged transfer surface of the transfer mold, which is made to face a surface of the plastic molded body, to the surface of the plastic molded body so as to form a precursor of a re-entrant structure surface;
- deforming the precursor into a re-entrant structure surface by heating and/or pressurizing pillars distributed on the precursor formed by transfer so as to enlarge a diameter of a top portion of each of the pillars;
- and
- distributing fluorine atoms to at least a part of the re-entrant structure surface.
A method for producing a liquid-repellent plastic molded body comprising the steps of:
- preparing a plastic molded body molded into a predetermined shape and a transfer mold having a rugged transfer surface for forming a rugged re-entrant structure surface by transfer;
- transferring the rugged transfer surface of the transfer mold, which is made to face a surface of the plastic molded body, to the surface of the plastic molded body so as to form a re-entrant structure surface on the surface of the plastic molded body;
- and
- distributing fluorine atoms to at least a part of the re-entrant structure surface.
A method for producing a liquid-repellent plastic molded body comprising the steps of:
- preparing a plastic molded body molded into a predetermined shape and a plastic columnar body having an end surface with an enlarged diameter;
- forming a re-entrant structure surface by joining a plurality of the plastic columnar bodies to a surface of the plastic molded body;
- and
- distributing fluorine atoms to at least a part of the re-entrant structure surface.
Dependencies are inferred from the claim text.