An electrical steel sheet used for a laminated core is an electrical steel sheet including an insulation coating 3 on a surface of a base steel sheet 2, the insulation coating being coated with a coating composition for an electrical steel sheet. The coating composition for an electrical steel sheet includes: an epoxy resin; an epoxy resin curing agent; and an elastomer-modified phenolic resin, in which the amount of the elastomer-modified phenolic resin is 10 parts by mass to 100 parts by mass with respect to 100 parts by mass of the epoxy resin.

The present disclosure relates to a metal support including a bendable region, a non-bendable region, and at least one patterned region covering at least the bendable region. The bendable region is capable of bending in a first direction, a plurality of columns of hollowed-out parts arranged side by side along the first direction are arranged in the patterned region, each column of the hollowed-out parts includes a plurality of openings arranged at intervals along the second direction, and the patterned region includes two first edges arranged opposite to each other in the first direction, the hollowed-out part near the first edge is arc-shaped, convex sides of two arcs face each other, and the first direction and the second direction are perpendicular. The present disclosure also relates to a flexible display device.

A bendable region is capable of bending in a first direction, a plurality of columns of hollowed-out parts arranged side by side along the first direction are arranged in the patterned region, each column of the hollowed-out parts includes a plurality of openings arranged at intervals along the second direction, and the patterned region includes two first edges arranged opposite to each other in the first direction, the hollowed-out part near the first edge is arc-shaped, convex sides of two arcs face each other, and the first direction and the second direction are perpendicular.

A decorative component includes a plurality of metal finish layers deposited over a substrate and a plurality of sub-layers. The outermost metal finish layer is selectively deposited or removed to define one or more recesses to create different appearances of the component. The outer metal layer may undergo laser ablation to remove at least a portion of the outer layer while still exposing the outer layer in the area of removed material. The recess may extend fully through the outer layer to expose the underlying metal finish layer, and/or the recess may have a sloped bottom surface to define a gradient appearance. The outer layer may be applied over a mask that is applied to the underlying layer, such that the outer layer is selectively applied. The outer layer may be removed to expose the underlying finish layer without exposing a nickel sublayer and without requiring a top coat.

A steel part includes a steel sheet substrate and a coating on at least one surface of the steel sheet substrate. The coating includes between 0.2 and 0.7% by weight of Al, with a remainder of the metal coating being Zn and inevitable impurities. The steel sheet substrate and the coating have at least one deformation. An outer surface of the coating has a waviness Wa.sub.0.8 of less than or equal to 0.43 m.

The surface-treated steel includes: a steel; a plated layer containing Zn or a Zn alloy formed on a surface of the steel; and a chemical conversion coating film formed on a surface of the plated layer, wherein the chemical conversion coating film contains an organosilicon compound having a siloxane bond, and P and F, and when the abundance ratio of an alkylene group and a siloxane bond in the organosilicon compound is measured by Fourier transform infrared spectroscopy (FT-IR), a ratio A1/A2 of a peak value A1 of an absorbance at 2,800 to 3,000 cm.sup.1 indicating the alkylene group to a peak value A2 of an absorbance at 1,030 to 1,200 cm.sup.1 indicating the siloxane bond is 0.10 to 0.75.

Disclosed are surface-treated copper foils having at least one treated surface that exhibit high conductivity and a set of surface properties. Also provided are flexible copper-clad laminates and printed circuits made therefrom. The present printed circuits exhibit low insertion loss and are suitable for use in high speed/high frequency applications.

A bendable region is capable of bending in a first direction, a plurality of columns of hollowed-out parts arranged side by side along the first direction are arranged in the patterned region, each column of the hollowed-out parts includes a plurality of openings arranged at intervals along the second direction, and the patterned region includes two first edges arranged opposite to each other in the first direction, the hollowed-out part near the first edge is arc-shaped, convex sides of two arcs face each other, and the first direction and the second direction are perpendicular.

A pre-painted metal sheet including a metal sheet and a void-containing paint film, which is located on at least one surface of the metal sheet, with dispersed fine particles and voids, wherein when a cross-section of the void-containing paint film cut in a thickness direction of the void-containing paint film is observed, the voids are present in 40 to 95 area % of a total area of the cross-section of the void-containing paint film. When an average particle diameter of the fine particles is t [m] and an average film thickness of the void-containing paint film is T [m], a ratio t/T is in a range of 0.7 to 3.0. An elastic modulus of the fine particles, when compressed by 10% from the thickness direction, is 30 MPa or more.

An element body 4 includes a metal particle dispersion element 15 in which metal particles 12 are dispersed. A surface of the metal particle dispersion element 15 includes an indicator area 10. The indicator area 10 includes a recess 10a having a predetermined depth measured from a reference plane L of the metal particle dispersion element 15. The predetermined depth D1 is deeper than D50 of the metal particles 12 included in the metal particle dispersion element 15.