Three-dimensional printing pens and related systems and methods are provided. A three-dimensional printing pen may include a plurality of cartridges, each cartridge having a hollow cartridge body sized and shaped to include a colored thixotropic paste, a color of each thixotropic paste being different from a color of another thixotropic paste, and a plurality of nozzles, each nozzle fluidly communicatively coupled to a corresponding cartridge. The three-dimensional printing may further include a motor unit operably coupled to the plurality of cartridges, the motor unit operable to expel the colored thixotropic paste from each cartridge through the corresponding nozzle, a mixing tip fluidly communicatively coupled to the plurality of nozzles, the mixing tip sized and shaped to dispense therethrough one or more of the colored thixotropic pastes in a form of an output thixotropic paste, and a projection module. The projection module may include a light engine assembly that emits light having a wavelength, the light being projected to the output thixotropic paste to cure the output thixotropic paste that is dispensed from the mixing tip.

A floor panel may include a substrate and a top layer located above the substrate. The substrate may include a closed cell foamed synthetic material layer with fillers, and have an average density of more than 300 kilograms per cubic meter. The top layer may include a back layer, a printed synthetic material film above the back layer, and a transparent or translucent synthetic material wear layer above the printed synthetic material film. The back layer may include a vinyl compound with fillers, and have a thickness of at least 45 percent of the thickness of the top layer. The floor panel may include first mechanical coupling parts at the pair of long edges and second mechanical coupling parts at the pair of short edges. The first mechanical coupling parts may allow horizontal and vertical locking of two of such floor panels using a turning movement along the respective long edges.

A method of injecting a colorant into an extruded material and an artificial wood plank formed from said method. The method includes steps of extruding the material from an extruder to at least one die, shaping the material into a board via the at least one die, injecting the colorant into the material with at least one color injector in a pre-defined pattern, and forming a bubble in the material to impart a simulated woodgrain appearance into the material downstream of the at least one die.

A method of forming an extrusion bubble in an extruded material. The method includes steps of extruding the material from an extruder to at least one die, expanding a first portion of the material along the at least one die, expanding a second portion of the material along a calibrator, and forming a bubble in the material between the at least one die and the calibrator to impart a simulated woodgrain appearance into the material. The method may further include a step of defining an extrusion gap between the at least one die and the calibrator; wherein the bubble is formed inside of the extrusion gap.

An extrusion color injection system that includes an extruder, at least one die, at least one color injector, a calibrator, and an extrusion gap. The at least one die is operable to shape material exiting from the extruder. The at least one color injector is operable to inject a colorant into the material exiting from the extruder in a pre-defined pattern. The is also calibrator downstream of the at least one die. The extrusion gap is defined between the at least one die and the calibrator. In this system, a bubble is formed in the material at the extrusion gap to impart a simulated appearance into the material with the colorant.

A floor may include a substrate having a top side and a bottom side. A top layer may be provided on the substrate. The top layer may consist of a printed thermoplastic film and a thermoplastic transparent or translucent layer provided on the printed thermoplastic film. The top layer may be directly adhered to the substrate by heat welding the printed thermoplastic film and the top side of the substrate, in the absence of a glue layer. The substrate may be a synthetic material board including a filler. The substrate at least at two opposite edges may include coupling means provided in the synthetic material board. The thermoplastic transparent or translucent layer may be provided with a structure.

A floor panel may include a substrate and a top layer located above the substrate. The substrate may include a closed cell foamed synthetic material layer with fillers, and have an average density of more than 300 kilograms per cubic meter. The top layer may include a back layer, a printed synthetic material film above the back layer, and a transparent or translucent synthetic material wear layer above the printed synthetic material film. The back layer may include a vinyl compound with fillers, and have a thickness of at least 45 percent of the thickness of the top layer. The floor panel may include first mechanical coupling parts at the pair of long edges and second mechanical coupling parts at the pair of short edges. The first mechanical coupling parts may allow horizontal and vertical locking of two of such floor panels using a turning movement along the respective long edges.

A floor panel may include a substrate and a top layer. The top layer may include a printed thermoplastic film and a thermoplastic transparent or translucent layer provided on the printed thermoplastic film. The substrate may be a synthetic material board including a filler. The substrate may include coupling means provided at edges of the synthetic material board. The coupling means may enable locking with a similar floor panel and prevent separation in a horizontal direction using locking parts with horizontally active locking surfaces. The horizontally active locking surfaces may be oriented at an angle A of more than 90 degrees with the horizontal direction. A first one of the locking parts may be an upstanding part at a bottom lip of a first one of the edges. The angle A may be between (a) a tangent of the horizontally active locking surfaces, and (b) a direction in a horizontal plane that points away from an open curved surface of the upstanding part.

A floor panel may include a substrate and a top layer located above the substrate. The substrate may include a closed cell foamed synthetic material layer with fillers, and have an average density of more than 300 kilograms per cubic meter. The top layer may include a back layer, a printed synthetic material film above the back layer, and a transparent or translucent synthetic material wear layer above the printed synthetic material film. The back layer may include a vinyl compound with fillers, and have a thickness of at least 45 percent of the thickness of the top layer. The floor panel may include first mechanical coupling parts at the pair of long edges and second mechanical coupling parts at the pair of short edges. The first mechanical coupling parts may allow horizontal and vertical locking of two of such floor panels using a turning movement along the respective long edges.

A mono- or multilayer film is provided that includes at least one decorative layer having a matrix formed from a first polymeric material and striations of a second polymeric material embedded into the matrix formed from the first polymeric material. The invention further includes processes to form the inventive films, as well as articles formed therefrom.