The present disclosure provides a die assembly for producing a microcapillary film. The die assembly includes a first die plate, a second die plate, a plurality of multi-jackbolt tensioners connecting the first die plate to the second die plate, a manifold, and a plurality of nozzles. The manifold is located between the pair of die plates and defines a plurality of film channels therebetween. The plurality of film channels converge into an elongate outlet, wherein a thermoplastic material is extrudable through the plurality of film channels and the elongate outlet to form a microcapillary film. The plurality of nozzles are located between the plurality of film channels. The plurality of nozzles are operatively connected to a source of channel fluid for emitting the channel fluid between layers of the microcapillary film, whereby a plurality of microcapillary channels are formed in the microcapillary film.

An extruder containing a housing having a flow channel for a melt and a perforated plate delimiting the flow channel on the outlet side, where the perforated plate has at least two through-flow areas spaced apart from one another, each through-flow area contains at least one through-flow opening, and the perforated plate is furthermore mounted in a changing device, where the changing device has guide elements, in which the perforated plate can be moved substantially perpendicularly to the flow channel, and the extruder, directly ahead of the perforated plate when viewed in the direction of flow of the melt, has an inlet flow cone, which is structurally separate from the perforated plate, thus allowing the through-flow areas of the perforated plate to be moved relative to the inlet flow cone.

A secure extruder device includes a material delivery channel, a nozzle part, a parameter part, a thermal-control part, a material auto-destruction module and/or a parameter auto-destruction module. The material delivery channel is assembled with an extrusion part. The nozzle part is connected to the material delivery channel for ejecting material in the material delivery channel out. The parameter part provides parameters for a printing task to a microcontroller. The thermal-control part heats the nozzle part according to the parameters for the printing task. The material auto-destruction module destroys the material delivery channel after the printing task is completed. The parameter auto-destruction module destroys the parameters for the printing task after the printing task is completed. The microcontroller controls the extrusion part based on the parameters for the printing task so that the extrusion part delivers the material disposed inside the material delivery channel to the nozzle part.

A printer system may include a coaxial extruder head that extrudes a core, a bulk, and/or a core and bulk cladding to form complex structures without retooling. The coaxial extruder head may include a distribution channel with an entrance and an exit, a priming chamber that surrounds the distribution channel. The priming chamber may include an outlet and a first inlet, a heating element thermally connected to the priming chamber, and a nozzle connected to the outlet of the priming chamber. Further, the nozzle may converge from the outlet of the priming chamber to an orifice of the nozzle. In addition, the exit of the distribution channel may be disposed at the orifice of the nozzle. This structure facilitates extruding a core and cladding type composite from the extruder head.

An apparatus for additively manufacturing an article includes a heat block, a nozzle in operable communication with the heat block and configured to receive a feed material, a heat break coupled to the heat block, at least a portion of the heat break extending into the heat block, and a radiator secured to at least one surface of the heat break. Related tools for additively manufacturing a material in a vacuum and related methods are also disclosed.

A length-adjustable adapter device (100) for connecting a plastics melt filtering device (200) to a pipeline (300), having at least a housing connection element (10) which has at least one inner flow duct (13) in a pipe extension (12) which is provided with an external thread (14), an adjusting ring element (20) having an internal thread (24) for receiving the external thread (14) of the pipe extension (12) and a line connection element (30) for connecting to the pipeline (300) with a line ring flange (31) and with a pipe extension (32) having an inner flow duct (33). The line ring flange (31) is rotatable in a receiving groove (23) of the adjusting ring element (20) and is fixed in a form-fitting manner against axially acting forces.

A three-dimensional drawing device can include a housing configured for to be held in user's hand, shaped to allow manipulation of the housing like a pen, and configured to accept a strand of thermoplastic material. The drawing device has a nozzle assembly with an exit nozzle and a motor connected to a gear train that engages the strand such that rotation of the motor causes the feed stock to be extruded out of the exit nozzle to form a three-dimensional object. The motor can be controlled using a variable speed control mechanism or first and second actuators, thereby controlling movement of the strand, for example, to advance or retract the strand relative to the nozzle assembly.

A method and apparatus for additive manufacturing that includes a nozzle and/or barrel for extruding a plastic material and a supply of polymeric working material provided to the nozzle, wherein the polymeric working material is magnetically susceptible and/or electrically conductive. A magneto-dynamic heater is provided for producing a time varying, high flux, frequency sweeping, alternating magnetic field in the vicinity of the nozzle to penetrate into and couple the working material to heat the material through at least one of an induced transient magnetic domain and an induced, annular current.

An extruder assembly for a three-dimensional printer having one nozzle, attached to a heating block, a temperature control element for controlling the temperature of the heating block, a mixer, a heat sink arranged between the heating block and the mixer. The extruder assembly is suitable for 3D printing.

A three-dimensional printing nozzle structure including a heater, a nozzle, a feed tube and a baffle member is provided. The heater has a first through hole. The nozzle is connected to the heater and has a second through hole. The feed tube passes through the first through hole and has a feed channel. The first through hole, the second through hole and the feed channel are aligned with each other. A filament moves along the feed channel to pass through the heater. The heater heats and melts the filament, and the filament that has been melted moves from the feed channel into the second through hole to be extruded. The baffle member is disposed inside the first through hole and located between the feed channel and the second through hole. The baffle member is configured to adjust a degree of communication between the feed channel and the second through hole.