WindmÖller & HÖlscher Kg

Jens Goldenstein

Henning Steuter

Markus Bussmann

Martin Backmann

Andreas Ihme

Ingo Rübbelke

Simon Haselmann

Jürgen Linkies

Markus Bussman

Frank Gunschera

Harald Höfener

Jürgen Erdmann

The invention relates to a blown film line for generating a blown film with at least one extruder for generating at least one melt strand, at least one distribution tool for converting the at least one melt strand into a circulating melt layer, an outlet nozzle for outputting the at least one melt layer, wherein this melt layer forms the blown film, and at least one device for subjecting the blown film to at least one fluid stream, in particular an air stream, for cooling the blown film. At least one pressure-providing device is furnished, with which the blown film may be brought to the device for subjecting the blown film to a fluid stream by means of at least one overpressure and/or one underpressure.

System for producing a blown film

The invention relates to a calibrating device and to a method for calibrating a film tube. An elastically deformable element () is secured to the sleeve () such that a fluid, in particular a gas, preferably air, can be introduced or discharged via a fluid connection such that a specific pressure Pand/or a specific volume Vis set in an area () enclosed by the sleeve and the elastically deformable element at a given temperature. Annular bodies () and () are arranged within the area (), and a surface section of each annular body (), () supports a respective region of the elastically deformable element (). The elastically deformable element () regions which are supported by the annular bodies are located in the inlet region () and the outlet region () of the calibrating device for the film tube ().

Calibrating device and method for calibrating a film tube

The invention relates to a calibration device () for calibrating a blown film (), said device comprising; &#x2014;a tubular region () with at least one inner wall (), through which region the blown film () can be passed; &#x2014;a liquid reservoir which provides a liquid and which is situated above the tubular region (); an inlet region, in which the liquid can be introduced into the space between the outer wall of the blown film () and the inner wall () of the tubular region (); and &#x2014;a scraper device (), situated below the tubular region (), 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 () from the main axis of the blown film () can be altered.

Device and method for cooling a blown film

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

Device and method for calibrating a blown film

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 () each having the foil owing features: at least one supporting element (), at least one film-guiding element (), which is at least partially porous, preferably microporous, and which is connected to the supporting element (). At least one fastening element is provided, by means of which the supporting element () and the film-guiding element () can be detachably fastened to each other.

Guiding device and methods for guiding a plastic film, and blown film installation

The invention relates to a blown film extrusion device with a blow head and with an insulation, which comprises a heat resistance for thermal insulation of the blow head in relation to the outer ambient air, wherein the blown film extrusion device comprises elements for controlling the heat resistance.

Growing community of inventors

Lengerich, Germany

Jens Goldenstein