The invention relates to a method for producing plastic profiles, according to which a starting material is plasticated and formed in an extruder, then is cooled and calibrated in at least one dry calibration unit and at least one calibration tank and is subsequently subdivided into individual profile sections. To achieve optimal control of the extrusion line, measurements relating to the geometry and/or the weight of the plastic profile are continuously carried out downstream of the calibration tank and correction values, which are used to change settings in the extruder, the dry calibration unit and/or the calibration tank, are calculated directly from these measured values.

A sticker for spacing wood is extruded from an alloy that includes polycarbonate resin and polysulfone resin. The sticker can have a variety of different configurations, including a top surface that includes contact points that have an area substantially smaller than the area of the top surface, a single or multiple internal longitudinal hallow chambers separated by multiple reinforcing members, longitudinal external grooves that allow airflow, lateral external grooves that intersect the longitudinal external grooves, curved sides for a version where the stickers are placed manually, and substantially straight sides for a version where the stickers are placed by a machine. A method for manufacturing the sticker includes pulling an extrusion with a puller that includes a plurality of teeth that provide a first plurality of lateral grooves running substantially perpendicular to a longitudinal axis of the extrusion in a top and bottom surface of the extrusion.

The invention relates to a device and a method for calibrating a blown film (6), said device comprising: a tubular region with at least one inner wall (55), through which region the blown film can be passed; a liquid reservoir (82), which can be used to provide a liquid and which is situated above the tubular region, the liquid being guidable between the inner wall (55) and the blown film; and a suctioning device (B), situated below the tubular region, for suctioning off at least part of the liquid from the blown film. At least one liquid-permeable element (92) is provided, said element surrounding at least parts of the periphery of the blown film (6). This device permits the distance of the liquid-permeable element from the main axis of the blown film to be altered.

The invention relates to a method for the extrusion and labelling of a packaging tube (14), comprising the following successive steps performed on an extrusion-labelling line, namely: a) forming a partially or fully tubular label (17) from a film (12); b) introducing the label (17) into a calibration element (22); c) extruding a tubular body (13) on the side of the concave surface of the label (17); d) bringing the external surface of the tubular body (13) into contact with the concave surface of the label (17), step (c) being performed in the calibration element (22). The invention also relates to an extrusion-labelling device and a packaging tube.

A method of and apparatus for extruding an article of uniform cross-section, the article including a thermoplastic material and at least one cable for inhibiting stretch of the article. The cable is supplied to a respective tube and is conveyed between upstream and downstream ends. The thermoplastic material may be supplied to the downstream end of the tube. The thermoplastic material is brought together with the cable to embed the cable within the thermoplastic material, thereby forming a composite extrudate. The tube is configured to at least hinder movement of loose windings of the cable from the downstream end towards the upstream end, which may prevent or at least reduce incidence of birdcaging.

A method of and apparatus for extruding an article of uniform cross-section, the article including a thermoplastic material and at least one cable for inhibiting stretch of the article. The cable is supplied to a respective tube and is conveyed between upstream and downstream ends. The thermoplastic material may be supplied to the downstream end of the tube. The thermoplastic material is brought together with the cable to embed the cable within the thermoplastic material, thereby forming a composite extrudate. The tube is configured to at least hinder movement of loose windings of the cable from the downstream end towards the upstream end, which may prevent or at least reduce incidence of birdcaging.

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.

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.

A calibration device for the extrusion of profiles from plastics is provided. The calibration device comprises at least one tank calibrator with an opening and a running surface for the extruded profile, which can be arranged in a vacuum tank with cooling water and via whose outer surface the heat of the extruded profile can at least partly be transferred to the cooling water. The at least one tank calibrator includes at least one cooling channel for cooling the running surfaces and the axial length of the tank calibrator at least corresponds to the height and/or the width of the nominal dimension of the profile.

A method for producing low density polyester foam utilizing low I.V. polyester feedstock includes providing a low intrinsic viscosity raw material. The low intrinsic viscosity raw material includes between 25% to 100% of a post consumer polyester and has an intrinsic viscosity of less than 0.8 dl/g. The intrinsic viscosity of the low intrinsic viscosity raw material is increased via a de-condensation reaction configured to support foaming. The intrinsic viscosity of the low intrinsic viscosity raw material is increased to 1.1 dl/g or greater. A starting formulation is created including the low intrinsic viscosity raw material with the increased intrinsic viscosity. The starting formulation is foamed to create the polyester foam. Wherein, the polyester foam produced has a specific gravity of less than 0.65 g/cc.