Drag reduction structure, resin molded product, shaping mold and moving object
AssigneeDai Nippon Printing Co., Ltd.
InventorsTsuyoshi CHIBA, Fumihiro ARAKAWA
Life of this patent
Estimating the term…
Abstract
A drag reduction structure wherein a first portion including a plurality of convex portions and concave portions, and a second portion are placed on a first surface; a height from a bottom portion of the concave portion to a top portion of the convex portion, of the first portion, is 10 μm or more and 1000 μm or less; a length of the first portion in a second direction is 30 mm or more; and a width of the first portion and a width of the second portion, in a first direction crossing the second direction, is 0.2 mm or more and 50 mm or less.
Claims30
A drag reduction structure wherein a first portion including a plurality of convex portions and concave portions, and a second portion are placed on a first surface;
- a height from a bottom portion of the concave portion to a top portion of the convex portion, of the first portion, is 10 μm or more and 1000 μm or less;
- a length of the first portion in a second direction is 30 mm or more;
- and
- a width of the first portion and a width of the second portion, in a first direction crossing the second direction, is 0.2 mm or more and 50 mm or less.
A resin molded product comprising a convexo-concave structure on its surface,
- wherein, in the convexo-concave structure, a first portion including a plurality of convex portions and concave portions, and a second portion are placed on a first surface;
- a height from a bottom portion of the concave portion to a top portion of the convex portion, of the first portion, is 10 μm or more and 1000 μm or less;
- a length of the first portion in a second direction is 30 mm or more;
- and
- a width of the first portion and a width of the second portion, in a first direction crossing the second direction, is 0.2 mm or more and 50 mm or less.
A shaping mold comprising a convexo-concave structure on its surface,
- wherein, in the convexo-concave structure, a first portion including a plurality of convex portions and concave portions, and a second portion are placed on a first surface;
- a height from a bottom portion of the concave portion to a top portion of the convex portion, of the first portion, is 10 μm or more and 1000 μm or less;
- a length of the first portion in a fourth direction is 30 mm or more;
- and
- a width of the first portion and a width of the second portion, in a third direction crossing the fourth direction, is 0.2 mm or more and 50 mm or less.
A moving object comprising a drag reduction structure on its surface,
- wherein, in the drag reduction structure, a first portion including a plurality of convex portions and concave portions, and a second portion are placed on a first surface;
- a height from a bottom portion of the concave portion to a top portion of the convex portion, of the first portion, is 10 μm or more and 1000 μm or less;
- a length of the first portion in a traveling direction of the moving object is 30 mm or more;
- and
- a width of the first portion and a width of the second portion, in a direction crossing the traveling direction of the moving object, is 0.2 mm or more and 50 mm or less.
Dependencies are inferred from the claim text.