Abstract: A ventilation module is disclosed having a ventilation outlet channel including a gas flow inlet side and an opposite gas flow outlet side. The ventilation outlet channel is separated in the longitudinal direction to form at least two ventilation channel portions, such that the at least two ventilation channel portions are adjustable away from and towards one another transversely to the longitudinal extent of the ventilation outlet channel. The width of the ventilation outlet channel and thus the flow cross section can be increased or decreased.

Abstract: A feed device for automatically feeding a material web from a first stretching unit to a second stretching unit is disclosed having a conveying device configured to transfer at least one strip of the material web that exits the first stretching unit to a transport device of the second stretching unit.

Abstract: An improved ventilation module is characterised by the following features, among others: a ventilation outlet channel (61) having a gas flow inlet side (61c) and an opposite gas flow outlet side (61d) is provided, the ventilation outlet channel (61) is separated in the longitudinal direction to form at least two ventilation channel portions (61a, 61b), such that the at least two ventilation channel portions (61a, 61b) are adjustable away from and towards one another transversely to the longitudinal extent of the ventilation outlet channel (61), whereby the width (B) of the ventilation outlet channel (61) and thus the flow cross section can be increased or decreased.

Abstract: A blower nozzle, especially for heating or cooling web-like materials, especially plastic foil webs, comprises at least one distribution chamber (11) and often a supply chamber (7). In the improvement, between the supply chamber (7) and the distribution chamber (11) there is at least one other chamber (9), so that the treatment gas can flow from the supply chamber (7) to the at least one further chamber (9) via an overflow aperture arrangement (17) and from the further chamber (9) via another overflow aperture arrangement (23) into the distribution chamber (11) for further conveyance to the outlet aperture arrangement (27).