The object of the invention are the device and method for the creating of supports, formworks, and structures made of foamed plastics, and the method for the creating of constructions, which can be used especially for the incremental creation of concrete structures, as well as the device and method for the creating of concrete constructions, especially in the incremental technique, where the supports, formworks, and structures are made of foamed plastics using the incremental technique.

A liquefier tube for an additive manufacturing system, including a body provided with a feed channel including a feeding portion having a first diameter, an outlet portion having a second diameter, the first diameter being larger than the second diameter, and a transitional portion interconnecting the feeding portion and the outlet portion. The transitional portion has a decreasing third diameter from the first diameter to the second diameter, and an inner surface of the transitional portion is provided with a plurality of ribs. Methods of manufacturing the liquefier tube.

An extruder has a barrel extending from a feed inlet end to an extruder outlet end. The barrel has an inner surface, an outer surface, and a wall thickness between the inner and outer surfaces. The extruder also has at least one heating member positioned provided on the barrel; a screw drive motor drivingly connected to a rotatably mounted screw positioned within the barrel, whereby the screw is rotatable at various revolutions per minute (RPM); and a controller is operably connected to the screw drive motor to adjust the RPM of the screw based upon a temperature of material passing through and/or being extruded from the barrel. Methods for operating an extruder filling a mold are also provided.

A printhead a supplying portion with a supplying opening of a filament; a melting portion to melt a filament supplied; a discharging portion having a discharging opening to discharge the melted filament. A heat insulating portion between the supplying portion and the melting portion are integrally formed to effectively suppress heat in the melting portion conducting to the supplying portion even when the melting portion is heated to high temperature, to maintain the temperature of the supplying portion to an appropriate temperature, and to efficiently utilize heat by the melting portion as a result of heating the melting portion.

An extruder or other similar tool head of a three-dimensional printer is slidably mounted along a feedpath of build material so that the extruder can move into and out of contact with a build surface according to whether build material is being extruded. The extruder may be spring-biased against the forward feedpath so that the extruder remains above the build surface in the absence of applied forces, and then moves downward into a position for extrusion when build material is fed into the extruder. In another aspect, modular tool heads are disclosed that can be automatically coupled to and removed from the three-dimensional printer by a suitable robotics system. A tool crib may be provided to store multiple tool heads while not in use.

An extruder or other similar tool head of a three-dimensional printer is slidably mounted along a feedpath of build material so that the extruder can move into and out of contact with a build surface according to whether build material is being extruded. The extruder may be spring-biased against the forward feedpath so that the extruder remains above the build surface in the absence of applied forces, and then moves downward into a position for extrusion when build material is fed into the extruder. In another aspect, modular tool heads are disclosed that can be automatically coupled to and removed from the three-dimensional printer by a suitable robotics system. A tool crib may be provided to store multiple tool heads while not in use.

A continuous, serpentine and intersecting pattern of filaments is provided on a surface of a house wrap membrane. Water drainage channels may be provided by depressions or viaducts formed at locations along filaments. The filaments may be formed using hot melt nozzles disposed on a member and translated transversely as the membrane is translated longitudinally beneath the nozzles.

The invention relates to a method for manufacturing an elastic and flexible fiber with a pre-de-termined non-circular cross-sectional geometry, the method comprising extrusion of an elasto-mer from a nozzle onto a substrate, wherein the pre-determined non-circular cross-sectional geometry of the fiber is determined by the height and velocity of the nozzle relative to the sub-strate. The invention relates to an elastic and flexible fiber produced using the method, wherein the fiber comprises an elongated indentation along a length of the fiber (groove). The invention relates to methods for producing preferably biocompatible microfluidic, electrically conducting or light-guiding fibers using the methods of the invention. The invention further re-lates to elastic and flexible fibers produced by the method.

The invention relates to a method for manufacturing an elastic and flexible fiber with a pre-de-termined non-circular cross-sectional geometry, the method comprising extrusion of an elasto-mer from a nozzle onto a substrate, wherein the pre-determined non-circular cross-sectional geometry of the fiber is determined by the height and velocity of the nozzle relative to the sub-strate. The invention relates to an elastic and flexible fiber produced using the method, wherein the fiber comprises an elongated indentation along a length of the fiber (groove). The invention relates to methods for producing preferably biocompatible microfluidic, electrically conducting or light-guiding fibers using the methods of the invention. The invention further re-lates to elastic and flexible fibers produced by the method.

An extruder or other similar tool head of a three-dimensional printer is slidably mounted along a feedpath of build material so that the extruder can move into and out of contact with a build surface according to whether build material is being extruded. The extruder may be spring-biased against the forward feedpath so that the extruder remains above the build surface in the absence of applied forces, and then moves downward into a position for extrusion when build material is fed into the extruder. In another aspect, modular tool heads are disclosed that can be automatically coupled to and removed from the three-dimensional printer by a suitable robotics system. A tool crib may be provided to store multiple tool heads while not in use.