A security marking has a physically unclonable function (PUF) wherein the PUF includes a disordered multilayer photonic crystal structure having an electromagnetic transmission and/or reflection spectrum and/or spectra upon receipt of electromagnetic radiation within a photonic bandgap region of the structure that is unique to the structure.

The present invention provides a method for 3D inkjet printing, which comprises: a preheating step: an external heating source is used to heat a main body layer composed of a first composition to a first temperature, wherein the main body layer has a thickness of 10 μm to 500 μm and a unit density of 0.1 to 1.0 g/cm.sup.3, and the first temperature is less than the melting point of the first composition; a heating step: a second composition is applied to the surface of the first composition at the first temperature of the composite to proceed an exothermic cross-linking polymerization, so that the main body layer is heated to a second temperature to become a molten state; and a cooling step: the main body layer in the molten state is cooled down and solidified to form.

A method of fabricating plastic products having a preselected color, comprising preparing a dispersion of pigment of the preselected color in cottonseed oil; supplying a preselected plastic resin for the product to be fabricated to a process machine having a rotating screw; furnishing the dispersion to the process machine at a position adjacent to threaded portion of the rotating screw; and blending the dispersion and the resin by rotating the screw.

A method and a device are described for creating a pattern (7) of a first fluid in a second fluid, the density of which is adapted, as a function of the viscosity thereof, to the density of the first fluid, and wherein the two fluids are immiscible or are miscible only with difficulty, said device comprising a storage container (1) for the first fluid and an injector which is connected to the storage container (1) and is associated with a positioning unit (5). In order to make it possible to create floating patterns (7) of a first fluid in a second fluid, in particular in the food sector for creating predefined floating patterns (7) in beverages, it is proposed that the injector forms a capillary (3) which is connected to the storage container (1) via a metering device (4) and the length of which corresponds at least to the maximum pattern depth in the second fluid, and that the outlet tip (9) of the capillary (3) is movable by way of the positioning unit (5) in the longitudinal direction of the capillary (3) and in at least one direction transverse thereto.

The present invention relates to an integrally blow-moulded bag-in-container (2) and preform (1, 1′) for blow-moulding the bag-in-container. An inner layer (11) and an outer layer (12) are used, wherein the preform forms a two-layer container upon blow-moulding, and wherein the obtained inner layer of said container releases from the thus obtained outer layer upon introduction of a gas at a point of interface (14) between the two layers. At least one of the inner and outer layers includes at least one additive allowing both inner and outer layers to reach their respective blow-moulding temperatures substantially simultaneously.

A blow molded multilayer article with a hollow body defined by a wall with an inner surface and an outer surface. The outer surface has an axial color gradient and/or a gloss gradient. The wall has multiple layers and at least one layer contains an effect pigment and/or an opacifying pigment.

Provided is a single-layer container containing a polyester resin (X), a polyamide resin (Y), a blue colorant (A), and a red colorant (B). The content of the polyamide resin (Y) is from 0.05 to 7.0 mass%, and the content of the blue colorant (A) is from 1 to 40 ppm.

The disclosure provides eco-friendly synthetic wood containing coffee grounds, which uses, as main components, coffee grounds and waste gypsum, which are waste resources, and PETG recycled from waste plastic, thereby contributing to protection of the environment, and which enhances formability, post-processability, and a weather resistance of the synthetic wood by reducing a ratio of shrinking-swelling and a water absorption factor of the synthetic wood, and a manufacturing method thereof.

A system and process for injection molding polymer articles is described. The system and process are designed to reduce gate blush. In one embodiment, an injection molding device injects a molten polymer composition into a mold cavity adjacent to an interior curved surface on the mold. The flow of the polymer material is parallel to a line that is tangent to the curved surface.

In an example method for forming three-dimensional (3D) printed electronic parts, a build material is applied. An electronic agent is selectively applied in a plurality of passes on a portion of the build material. A fusing agent is also selectively applied on the portion of the build material. The build material is exposed to radiation in a plurality of heating events. During at least one of the plurality of heating events, the portion of the build material in contact with the fusing agent fuses to form a region of a layer. The region of the layer exhibits an electronic property. An order of the plurality of passes, the selective application of the fusing agent, and the plurality of heating events is controlled to control a mechanical property of the layer and the electronic property of the region.