A method for 3D printing a 3D item (10), the method comprising providing a filament (320) of 3D printable material (201) and printing during a printing stage said 3D printable material (201) on a substrate (1550), to provide said 3D item (10), wherein the printing stage comprises (a) providing a layer (405) comprising particles (410) on the substrate (1550), wherein the particles (410) have a main axis (A1) having a main axis length (LI), and a minor axis (A2) having a minor axis length (L2), wherein the main axis length (LI) and the minor axis length (L2) have a first aspect ratio of at least 5, wherein in average the main axes (A1) of said particles (410) are configured parallel to a tangential plane (P) to the substrate (1550), wherein said particles (410) comprise light reflective material (411), and (b) printing said 3D printable material (201) on said layer (405) on the substrate (1550) to provide said 3D item (10) comprising said layer (405).

A reflective display device includes a substrate that has a side surface and that is formed by injection-molding, and a vapor-deposited film formed on a first surface of the substrate. Two corner portions on one side of the substrate each have a curved portion, and two corner portions on another side opposite to the one side of the substrate each have a bent edge portion. The substrate includes a level difference portion where a second surface side portion is formed recessed with respect to a first surface side portion with a parting line as a boundary, where the parting line is positioned in such a proportion that the first surface side portion becomes greater than the second surface side portion on an opposite side of the first surface side portion with respect to a width dimension of the side surface of the substrate.

A curable particulate silicone composition is provided which has hot-melt properties, excellent handling workability and curing characteristics, high light reflectance in the visible wavelength region, and excellent flexibility and toughness at a temperature of from room temperature to a high temperature of about 150 C. The composition comprises: (A) hot-melt silicone fine particles having a softening point of 30 C. or higher and having a hydrosilylation reactive group and/or a radical reactive group; (B) an inorganic filler substantially free of coarse particles having an average particle diameter of 5 m or more (fine particles); and (C) a curing agent. When cured, the composition provides a cured product that has: a storage modulus (G) at 25 C. of 2000 MPa or less; and a storage modulus (G) at 150 C. of 100 MPa or less; and a spectral reflectance of 90% or more at a wavelength of 450 nm at a thickness of 100 m.

The present invention introduces the use of a carbon nanotube-based material in the production of phased array patch antennas of various shapes and sizes including slot and spiral patch antennas. The use of this material provides the ability for the antennas to withstand high-intensity shock vibrations and other intense disturbances and continue emitting phased array signals. Furthermore, the use of this material for patch antennas allows for the alteration of the desired frequency and directional degree of interest by simply energizing various elements within the carbon nanotube-based material.

A purpose is to provide a resin encoder scale a cost of which can be reduced by making processing easy by producing the encoder scale as a resin molded piece including a scale pattern. A resin encoder scale is used in a reflection-type optical encoder and a scale pattern for position measurement is provided thereto. In the scale pattern, a low reflection part a surface of which is molded as a rough surface during resin molding and which has low reflectivity of light and a high reflection part a surface of which is molded as a mirror surface during the resin molding and which has higher reflectivity of light than the low reflection part are arranged alternately.

Provided are microcellular plastic articles having improved reflective properties. Also provided are methods of utilizing the disclosed articles.

A reflector includes a first reflector section and a second reflector section. The first reflector section extends along a portion of a first ellipse. The second reflector section extends along a portion of a second ellipse, the second ellipse intersecting the first ellipse. The first reflector section and the second reflector section are joined at an intersecting point of the first ellipse and the second ellipse.

A method for 3D printing an object with at least one wall (2) having a first surface and a second, opposite surface, wherein the first surface is intended to serve as an optical functional surface, wherein the wall is formed by printing one track (16) on top of another track (17). An orientation of the object during printing is selected such that the wall has a tangent (or tangent surface) non-parallel to the z-axis, such that the first surface faces away from the x-y plane and the second surface faces the x-y plane. According to the invention, the 3D object is thus oriented during printing such that the first surface, intended to be used as an optical functional surface, faces away from the x-y plane, i.e. typically away from the support or platform on which the 3D object is printed upon. By ensuring this orientation during printing, the first surface becomes smoother than the second, opposite surface of the wall.

The present application generally relates to retroreflective articles and methods of making retroreflective articles. Some embodiments include a body layer having an elastic modulus of equal to or greater than 1750 MPa, a plurality of truncated cube corner elements, and a polymeric layer between the body layer and the cube corner elements, the polymeric layer having an elastic modulus of less than 1750 MPa.

The present invention is directed to a thermoplastic polyester resin composition that contains 100 to 50 parts by mass of a polybutylene terephthalate resin (A) and 0 to 50 parts by mass of a polyethylene terephthalate resin (B), and contains 1 to 20 parts by mass of a surface-treated calcium carbonate (C) having an average particle size of 0.05 to 2 m and 0.05 to 3 parts by mass of a multifunctional glycidyl group-containing styrene-based polymer (D) with respect to 100 parts by mass of the total polyester resin contained in the resin composition.