A method of making a monolithic multi-tone audio speaker cover. The method involves creating a hole pattern in a blank; forming a shape in the blank to make a shaped blank; treating or painting at least some of the surface of the shaped blank with a primary treatment or color to prepare a treated or painted shaped blank; masking an area of the treated or painted shaped blank with a masking material to cover at least a portion of the treated or painted shaped blank; and applying a secondary color to the unprotected area.

A method for decorating a translucent container including cleaning an exterior surface of the container and applying a silver layer to the exterior surface followed by a black layer applied over the silver layer. Portions of the silver and black layers are selectively removed to form one or more shapes using a laser. A translucent protective layer is applied over the entire exterior of the container.

A multilayer color and/or effect coating on a substrate, wherein the coating includes a clearcoat layer having a dry film thickness of 10 μm to 50 μm, and the coating includes a basecoat layer having a dry film thickness of 6 μm to 35 μm, incorporating color and/or effect pigments whose orientation within the basecoat layer influences the optical properties of the coating, and the basecoat layer includes control particles that control the orientation of the color and/or effect pigments, wherein the control particles are characterized by a d10 of at least 50% of the dry film thickness of the basecoat layer and by a d50 of 80% to 120% of the dry film thickness of the basecoat layer, and by a d100 of not more than 200% of the dry film thickness of the basecoat layer.

A method for forming a multilayer coating film includes forming a base coating film, a photoluminescent coating film, and forming a clear coating in this order, wherein the photoluminescent coating film uses a photoluminescent pigment dispersion containing a scaly photoluminescent pigment having a thickness T of 1 to 65 nm, wherein when all photoluminescent pigment present in the multilayer coating film is projected onto the surface of the multilayer coating film, the area occupancy ratio R indicating how much of the surface of the multilayer coating film is occupied by the parts in which the photoluminescent pigment is projected, is 0.1 to 50 percent; and the T and R satisfy “T (nm)×R (%)≤2000”. The obtained multilayer coating film can manifest excellent photoluminescence.

Methods are provided for forming a particular multi-layer micron-sized particle that is substantially transparent, yet that exhibits selectable coloration based on its physical properties. The disclosed physical properties of the particle are controllably selectable refractive indices to provide an opaque-appearing energy transmissive material when pluralities of the particles are suspended in a substantially transparent matrix material. Multiply-layered (up to 30+ constituent layers) particles result in an overall particle diameter of less than 5 microns. The material suspensions render the particles deliverable as aspirated or aerosol compositions onto substrates to form layers that selectively scatter specific wavelengths of electromagnetic energy while allowing remaining wavelengths of the incident energy to pass. The disclosed particles and material compositions uniquely implement optical light scattering techniques in energy (or light) transmissive layers that appear selectively opaque, while allowing 80+% of the energy impinging on the light incident side to pass through the layers.

A cylinder is usable, in particular, for aligning magnetic of magnetizable particles, which are contained in a coating medium that is applied to a first side of a web-like or a sheet-like substrate, which cylinder, in the region of its outer circumference, has a plurality of elements effecting a magnetic field, magnetic elements for short. The magnetic elements are arranged in or on a plurality of ring elements that are spaced axially apart from one another and that are positionable in the axial direction on a shaft, in or on which ring elements, in turn, a plurality of magnetic elements are respectively arranged one after the other in the circumferential direction. At least two adjacent ring elements, each have a covering element, forming a part of the cylindrical lateral surface of the cylinder and extending in the circumferential direction, at least over the circumferential region populated with magnetic elements. The covering elements of two ring elements adjacent to each other have, on their sides facing each other in the axial direction, a plurality of projections alternating in the circumferential direction with recesses and offset in a circumferential direction in such a way that, during a relative movement of the two ring elements towards each other, the projections on the covering element of one ring element engage, in the manner of teeth, in corresponding recesses of the other ring element, and, as seen in the circumferential direction, can overlap. A security paper printing machine, having such a cylinder, is also disclosed.

Disclosed are a chemochromic nanoparticle, a method for manufacturing the chemochromic nanoparticle, and a hydrogen sensor comprising the chemochromic nanoparticle. In particular, the chemochromic nanoparticle has a core-shell structure such that the chemochromic nanoparticle and comprises a core comprising a hydrated or non-hydrated transition metal oxide; and a shell comprising a transition metal catalyst.

The present invention relates to a system, which comprises: b) at least one first colour layer containing a dye and/or pigment, c) on the at least one first colour layer an effect layer containing at least one platelet-shaped effect pigment, wherein the at least one platelet- shaped effect pigment is composed of particles having an average length of 2 to 500 m, an average width of 2 to 500 m and an average thickness of at most 1 gm, and d) on the effect layer at least one second colour layer containing a dye and/or pigment, wherein each of the at least one first colour layer and of the at least one second colour layer contains a dye and/or pigment being no platelet-shaped effect pigment, wherein the at least one dye and/or at least one pigment included in the at least one first colour layer is different from the at least one dye and/or at least one pigment included in the at least one second colour layer, and wherein, at least if the at least one first colour layer has a sum of reflectance and scattering of less than 40%, the system further comprises: a) below the at least one first colour layer a lower layer containing a pigment and having a sum of reflectance and scattering of at least 40%.

According to the present disclosure, an isotropic structural colour printing process is provided. The process comprising (a) providing an ink composition comprising ink particles (such as polymeric particles (e.g. polystyrene), metal-organic frameworks (MOFs) (e.g. ZIF-8)) in a liquid reagent; and (b) depositing the ink composition onto a surface of a substrate (e.g. anodic aluminium oxide membrane, photo papers). Due to capillary action and/or absorption of the liquid reagent, the ink particles form an amorphous arrangement of structures that lead to isotropic structural colour. In the preferred embodiment, the ink particles may further be coated with a catechol group (such as polydopamine). An apparatus for detecting a target substance in the gaseous phase, wherein the apparatus comprises a nanostructure capable of exhibiting a change in isotropic structural colour when one or more molecules of the target substance are entrapped as an indication that the target substance is present, is also provided.

A method and a jig for forming a pattern, the method and the jig being capable of realizing various and unique pattern designs due to magnetic particles included in the magnetic ink being distributed in various densities according to intensity of the magnetic force. The method includes: preparing a jig which generating magnetic force, applying magnetic ink on a surface of a substrate to form a print layer, disposing the substrate configured with the print layer above the jig, forming a magnetic pattern on the print layer by applying magnetic force generated from the jig, and drying the print layer.