WindmÖller & HÖlscher Kg

Windmoeller & Hoelscher Kg

Windmöller & Heilscher Kg

Karsten Golubski

Martin Backmann

Markus Bussmann

Hermann-Josef Jäckering

Bernd Liesbrock

Juergen Linkies

Tobias Kulgemeyer

Tim Kirchhoff

Markus Joppe

Jürgen Linkies

Jens Althermeler

Henning Voss

Manuel Sollert

Raphael Gross

The invention relates to a stretching device for stretching a plastic film in the transport direction thereof, having a first roll, which can be driven by a first drive and can be rotated at a first rotational speed, and having a second roll, which can be driven by a second drive and can be rotated at a second rotational speed, wherein the second rotational speed is greater than the first rotational speed, and the second roll is arranged downstream of the first roll in the transport path of the plastic film, wherein at least one of the rolls is a roll through which air can flow inwards from the outside. According to the invention at least one roll through which air can flow can be continuously cleaned.

Stretching device and method for stretching a plastic film in the transport direction thereof

The invention relates to an apparatus for producing tubular films stretched in-line by blow molding with an extruder, a film blowing line, a lay-flat unit, an oscillating haul-off unit, and a stretching line for monoaxially stretching the film laid flat in machine direction. According to the invention, the stretching line is arranged above the extruder between the lay-flat unit and the oscillating haul-off unit.

Apparatus for producing films stretched in-line

The invention describes a process for starting up a film production in a film manufacturing machine, in particular a blown film machine, by means of a control device, comprising the following steps:

Method for starting or terminating production of a film in a film manufacturing machine, film manufacturing machine and computer program product

Methods for stretch-forming a thermoplastic film comprises: stretching the thermoplastic film between a first roller and a second roller, wherein the first the roller rotates at a first peripheral velocity and the second roller rotates at a second peripheral velocity that is higher than the first peripheral velocity; and advancing the thermoplastic film from the second roller to a third roller, wherein the third roller rotates at a third peripheral velocity that is lower than the second peripheral velocity, wherein a ratio of the third peripheral velocity to the second peripheral velocity is no larger than 0.95. The resulting breathable thermoplastic films may have a basis weight of no larger than 15 g/mand a shrinkage of no larger than 5%.

Breathable thermoplastic film with reduced shrinkage

The present invention relates to an overturning device () for overturning a molten material () in a melt channel () comprising a melt inlet () and a melt outlet (), wherein between the melt inlet () and the melt outlet () at least a melt guidance means () is assembled for a rearrangement of molten material () from the centre () of the melt inlet () at the edge () of the melt outlet () and for a rearrangement of molten material () from the edge () of the melt inlet () in the centre () of the melt outlet ().

Overturning device for overturning molten material and purging method

The present invention relates to an overturning device () for overturning a molten material () in a melt channel () comprising a melt inlet () and a melt outlet (), wherein between the melt inlet () and the melt outlet () at least a melt guidance means () is assembled for a rearrangement of molten material () from the centre () of the melt inlet () to the edge () of the melt outlet () and for a rearrangement of molten material () from the edge () of the melt inlet () into the centre () of the melt outlet ().

Overturning device for overturning molten material and rinsing method

The present invention relates to an overturning device () for overturning a molten material () in a melt channel () comprising a melt inlet () and a melt outlet () wherein between the melt inlet () and the melt outlet () at least one melt guidance means () is assembled for a rearrangement of the molten material () from the center () of the melt inlet () to the edge () of the melt outlet () and for rearrangement of the molten material () from the edge () of the melt inlet () into the center () of the melt outlet ().

The present invention relates to an overturning device () for overturning a molten material () in a melt channel () comprising a melt inlet () and a melt outlet (), wherein between the melt inlet () and the melt outlet () at least one melt guiding means () is assembled for a rearrangement of molten material () from the centre () of the melt inlet () to the edge () of the melt outlet () and for a rearrangement of molten material () from the edge () of the melt inlet () into the centre () of the melt outlet ().

A device for the production of film tubes includes a die head having an annular nozzle, from which a plastic melt for producing the film tube can be extruded in a transport direction (y), a fluid-application device, which is annular in shape at least in certain regions and which follows the die head in the transport direction (y) and which surrounds the film tube annularly, and via which a fluid can be guided toward the film tube, and a ring, the diameter of which is larger than the annular nozzle of the fluid-application device. The device has an adjusting device, via which the ring can be adjusted in height relative to the fluid-application device.

Growing community of inventors

Haltern am See, Germany

Karsten Golubski