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.

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.

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.

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.

Polymeric multilayer film comprising a layer exhibiting a random network of strands and connective regions that is separable from the remaining polymeric multilayer film. The polymeric multilayer films are useful, for example, for tape and graphic articles.

Polymeric multilayer film comprising a layer exhibiting a random network of strands and connective regions that is separable from the remaining polymeric multilayer film. The polymeric multilayer films are useful, for example, for tape and graphic articles.

Aspects of the disclosure relate to envelopes for aerial vehicle. The aerial vehicle may include an envelope including a plurality of gores. The aerial vehicle may also include a seal arranged between a pair of the plurality of gores, the seal including six layers of envelope material heat-sealed together.

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.

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.

Methods and systems for making a film made of dynamically vulcanized thermoplastic elastomeric material are provided herein. The subject methods and systems achieve dimensional stability of an elastic film by applying thermal treatment as part of the film making process and enhance the shrinkage of the film by intentionally with stretching the film while hot and freezing the film in the stretch. The systems and methods are useful in controlling shrinkage of DVA post film extrusion.