A polymeric material that is heated and extruded to build 3D-printed objects has variable and reversible thermochromic properties which enable software-controlled color alteration according to the extrusion temperature of the 3D printer, enabling 3D printing of a single object, in multiple colors, using a stock 3D printer. This color alteration is reversible, allowing the printing material to revert to its original color when it is exposed to a certain temperature range. The embodiment enables stock 3D printers to produce multicolored objects via software control, without requiring printer modifications or the use of ancillary tools. It enables the printing of single objects in multiple colors, using a single stock material.

A method of for multi-shot injection molding of a transferred part with film decoration includes performing a first injection molding shot to form an opaque plastic portion and a protective film layer that collectively form a transferred part defining one or more apertures, and performing a second injection molding shot including the transferred part to form a transparent plastic portion on an A-side of the transferred part and a metallic film layer on a B-side of the transferred part. A multi-shot injection molded transferred part with film decoration includes an opaque plastic portion and a protective film layer that collectively form the transferred part defining one or more apertures, a transparent plastic portion on an A-side of the transferred part; and a metallic film layer on a B-side of the transferred part.

A method of making a liner for an appliance is provided. The method includes mixing a polymeric capping layer precursor and a pigment additive to form a color capping layer. The method also includes extruding a polymeric base resin to form a polymeric base layer at a base layer formation temperature. The method further includes laminating the polymeric base layer and the color capping layer to form the liner at about the base layer formation temperature.

Color-selective waveguides, methods for fabricating color-selective waveguides, and augmented reality (AR)/mixed reality (MR) applications including color-selective waveguides are described. The color-selective waveguides can advantageously reduce or block stray light entering a waveguide (e.g., red, green, or blue waveguide), thereby reducing or eliminating back-reflection or back-scattering into the eyepiece.

A method includes injection molding a preform using a two phase injection system having a first phase in which a material is injected into the preform and a second phase in which the material is injected into the preform. The preform is disposed in a mold. The preform is blow molded into an intermediate article. The intermediate article is trimmed to form a finished container. The first phase includes injecting a material into the preform to form a single layer of the preform and the second phase includes injecting the material to form inner and outer layers and an intermediate layer between the inner and outer layers. The inner and outer layers include the material and the intermediate layer includes at least one additive. Finished containers are disclosed.

A method of treating an object fabricated from a modeling material by additive manufacturing, comprises exposing the object to visible light having a peak wavelength less than 470 nm, and to a temperature of less than a heat deflection temperature (HDT) of the modeling material.

A polyester film having a laminated structure and a method for manufacturing the same are provided. The polyester film has at least two polyester film layers. Each of the polyester film layers includes a physically recycled polyester resin and a chemically recycled polyester resin. The physically recycled polyester resin is formed by a plurality of physically recycled polyester chips. The chemically recycled polyester resin is formed by a plurality of chemically recycled polyester chips, and is mixed with the physically recycled polyester resin. The plurality of chemically recycled polyester chips further includes chemically recycled electrostatic pinning polyester chips. The chemically recycled electrostatic pinning polyester chips contain electrostatic pinning additives, and the electrostatic pinning additives are metal salts. The at least two polyester film layers are a white polyester film layer and a black polyester film layer, respectively.

A fabrication process and apparatus for producing three-dimensional objects by depositing a first polymer layer, printing a first ink layer on to the first polymer layer, depositing a second polymer layer on to the first ink layer, and printing a second ink layer on to the second polymer layer. The deposition and printing steps may be repeated until a three-dimensional object is formed. The inks used to form at least one of the first and second ink layers may include dyes or pigments so that the three-dimensional object may be a colored three-dimensional object.

[Problem] To provide a composite preform that can ensure that worsening of the appearance of a surface of a plastic member caused by near-infrared heating prior to blow molding is effectively prevented and that an inner preform is efficiently heated. [Solution] The composite preform of the present invention includes a preform and a heat-contractive plastic member, the preform including a mouth part; a trunk part linked to the mouth part; and a bottom part linked to the trunk part, and the heat-contractive plastic member being disposed so as to surround the outside of the preform and including at least a colored layer that contains a resin material and a colorant, wherein the heat-contractive plastic member has a near-infrared transmittance of 50% or higher.

A method of making an integrated depth sensor window lens, such as for an augmented reality (AR) head set, the depth sensor window lens comprising a sensor lens and an illuminator lens separated by an opaque dam. The method uses a two-shot injection molding process, a first shot comprising an optically clear polymeric material to form the sensor lens and the illuminator lens and the second shot comprising an opaque polymeric material to form the separator of the two.