A calibration device for a calibration, in particular wet calibration of an extrusion device is provided. The calibration device comprises a calibrating element which includes an opening for guiding through a profile produced by means of an extrusion die of the extrusion device and at least one rotatable guide roller which is in contact with the profile when the profile is guided through the opening. The calibration device further comprises at least one separate bearing element insertable into a cutout of the calibrating element, via which the guide roller can rotatably be mounted on the calibrating element.

Disclosed are plastic products from a recycled plastic mix of unidentified, unclean and unsorted mixed plastic waste made with a system comprising thermal and mechanical processing of the recycled plastic waste using continuous extrusion foaming, two-phase cooling, continuous metering of the pulling strength and automatic adjustment of the pulling speed and extrusion speed.

The present invention relates to an external cooling system for a molten film tube produced by a blown film tubular extrusion process. Embodiments of the present disclosure provide a unidirectional cooling element having a unidirectional cooling interface containing a cooling gas deflector spaced adjacent to the molten film tube. The unidirectional cooling element operably expels cooling gas in a path with the flow of the molten film tube toward an exit gap formed between the unidirectional cooling interface and the molten film tube. The minimum gap between the unidirectional cooling interface and the molten film tube occurs at the exit gap, and advantageously, the unidirectional cooling interface is provided with one or more compound angles to maximize stability and cooling efficiency.

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.

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.

Silicone-containing light fixture optics. A method for manufacturing an optical component may include mixing two precursors of silicone, opening a first gate of an optic forming device, moving the silicone mixture from the extrusion machine into the optic forming device, cooling the silicone mixture as it enters the optic forming device, filling a mold within the optic forming device with the silicone mixture, closing the first gate, and heating the silicone mixture in the mold to at least partially cure the silicone. Alternatively, a method for manufacturing an optical component may include depositing a layer of heat cured silicone optical material to an optical structure, arranging one or more at least partially cured silicone optics on the layer of heat cured silicone optical material, and heating the heat cured silicone optical material to permanently adhere the one or more at least partially cured silicone optics to the optical structure.

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.

The invention relates to a calibration device (1) for calibrating a blown film (6), said device comprising; a tubular region (55) with at least one inner wall (92), through which region the blown film (6) can be passed; a liquid reservoir which provides a liquid and which is situated above the tubular region (55); an inlet region, in which the liquid can be introduced into the space between the outer wall of the blown film (6) and the inner wall (92) of the tubular region (55); and a scraper device (117), situated below the tubular region (55), by means of which scraper device at least part of the liquid can be removed from the outer surface. The distance of the liquid-removing regions of the scraper device (117) from the main axis of the blown film (6) can be altered.