In blown film installations, it is known to provide longitudinal stretching of the produced double layer film strip downstream of the draw-off, more precisely downstream of the reversing unit and upstream of the winder. It is also known to stretch the down-drawn film, wherein the film must then be preheated owing to the long cooling path from the draw-off. According to a first feature, the present invention specifies warming the film above the draw-off and then treating it mechanically. The film can thereby be brought with only little energy from a first level of warmth to a temperature level at which it can easily be worked. According to a second feature, the invention specifies providing a tractive force breakdown brake.

A method and assembly for providing multi-stage extrusion of an article exhibiting an open interior. A multi-stage extrusion operation includes a first stage extrusion for receiving an initially extruded or otherwise pre-existing inner sleeve and extruding a surrounding sleeve and a plurality of radially projecting portions. A second stage subsequently extrudes an outer circular sleeve about the radially projecting portions. A third stage extrudes at least one wing portion to an outer edge of the outer circular sleeve.

A polyetheretherketone pipe of length greater than 250 meters and a residual stress of less than 5 MPa may be made using a calibrator device (2) which includes a cone shaped opening (6) arranged to receive a molten extruded pipe shaped polymer. Attached to the front member (4) is a vacuum plate (14a) and successive vacuum plates (14b-14h) are attached to one another to define an array of vacuum plates, the vacuum plates being arranged to allow a vacuum to be applied to a pipe precursor passing through opening (16). The vacuum plates (14) also include (10) temperature control means for heating or cooling the plates and therefore heating or cooling a pipe precursor passing through the openings. With a vacuum applied to opening (6, 16) and heating/cooling the plates, an extruded hot plastics pipe is inserted into calibrator (2) via opening (6) and conveyed through opening (16) in plates (14), whereupon it is urged by the vacuum against the cylindrical surface defined by plates (14) to maintain its shape and the (15) temperature of each plate is controlled to control the rate of cooling of the pipe precursor passing through. The pipe may be cooled at a relatively slow rate so that a pipe made from a relatively fast crystallizing polymer crystallizes and the crystallinity of the pipe along its extent and throughout its thickness is substantially constant.

Calibration basket having exchangeable air guiding elements composed of porous material. The invention relates to a guiding device and to methods for guiding a plastic film, wherein the plastic film can be guided by means of an air cushion, wherein the guiding device comprises a plurality of blower elements (31) each having the foil owing features: at least one supporting element (35), at least one film-guiding element (34), which is at least partially porous, preferably microporous, and which is connected to the supporting element (35). At least one fastening element is provided, by means of which the supporting element (35) and the film-guiding element (34) can be detachably fastened to each other.

Techniques, systems, and devices are described for implementing a portable and affordable 3D printer. One portable 3D printer includes a material supply system to supply printing material to a print engine. The print engine includes an extrusion system that comprises a heating block, which includes a top portion coupled to the material supply system to receive the printing material, a heating body to heat up the printing material, and a heat break portion positioned between the top portion and the heating body. The printer further includes a movement system to allow a horizontal movement of the extruder carriage, a build platform positioned below the movement system to receive the printing material from the extrusion system, and a printer body positioned to enclose the extrusion system, the movement system, and the build platform.

The present invention relates to a method for producing a medicament dosage form which consists of at least one piece which in each case comprises at least one medicament and at least one additive, the medicament and the additive being mixed and extruded from a die as a strand and the strand being cut into pieces of precise weight. The invention additionally relates to a device.

The present invention is related to a process for bordering a corrugated plastic panel and to a panel obtained through that process. In particular, the invention is related to a process for making a corrugated plastic panel comprising a bordering made in-line or out-line in order to close the openings outwards. The invention is also related to an apparatus for bordering according to that process. The panel is sealed and shock resistant thanks to the laying of thermoplastic elastomeric material.

A method of producing a multi-lumen elongate body for a medical device. Unlike known methods requiring a solid core of material inserted into each lumen to maintain patency of the lumens during manufacture, the present method obviates the need for a solid core within one or more minor lumens, which saves cost and production complexity. One or more material overlay and mesh overlay steps may be used to produce the multi-lumen elongate body, but only the main lumen may include a solid core therein during all manufacturing steps. The one or more minor lumens may each be defined by a lumen tube having a sufficient stiffness to withstand external pressure during all manufacturing steps without the need for a solid core within.

A calibration and cooling tank of an extrusion line, which connects to an extrusion tool, wherein a vacuum can be applied to the calibration and cooling tank for calibrating the plastic melt emerging from the extrusion tool, wherein the calibration and cooling tank extends along an extrusion axis. The calibration and cooling tank is modularly structured, wherein at least one module forms a calibration and cooling section and the module has a connection region on both sides to which an additional module can be attached. The connection region includes a flange that extends from the base element of the calibration and cooling tank to the outside.

This invention relates to a polymeric pipe, and more particularly a polymeric pipe where the pipe comprises a crosslinked polyolefin formed from extruded polyolefin comprising a photoinitiator and a reactive extrusion species. More particularly, this invention relates to the manufacturing of plastic pipes and tubing by utilizing co-rotating twin screw extrusion combined with photo-induced crosslinking, of thermoplastic polymers such as polyethylene, to produce PEX pipes and tubing.