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 treatment machine comprises at least two successive zones in an extraction direction of the material web between which a neutral zone is provided. In the neutral zone, a nozzle arrangement is provided adjacent to a zone exit wall and/or to a leading neutral zone wall on the one hand, and/or adjacent to the chamber inlet wall and/or a trailing neutral zone wall on the other hand, via which nozzle arrangement a gaseous fluid flow reaching a material web is generated. The nozzle arrangement is designed as follows: the respective gaseous fluid flow is directed at a blowing angle in the direction of the adjacent zone exit wall and/or the leading neutral zone wall or the zone inlet wall and/or the trailing neutral zone wall; and the gaseous fluid flow flows as far as the material web, following the zone exit wall, the leading neutral zone wall or the zone inlet wall and/or the trailing neutral zone wall.

Abstract: A treatment machine for flexible material webs which can be passed through treatment furnaces is disclosed having at least two successive zones in an extraction direction (A) of the material web, a zone separation device in relation to the extraction direction (A) of the flexible material web. The zone separating device includes at least one air partitioning device (AC) having an injection device (AC-E) which extends transversely to the material web and is designed such that a gaseous fluid flow (S) extending up to the flexible material web is generated above it. The injection device (AC-E) is also designed such that the gaseous fluid flow exiting from the injection device (AC-E) impinges obliquely in the direction of the flexible material web and thus on the material web plane (E) formed by the material web at a blowing angle (?).

Abstract: The invention relates to an improved blowing nozzle, in particular for stretching systems, which is characterised by the following features, inter alia: the nozzle box (5) is divided in its longitudinal direction (L) into at least two regions, specifically a first longitudinal region (LB1) closer to the inflow side (7) and a second longitudinal region (LB2) that is subsequent and/or downstream and/or further away from the inflow side (7), the first longitudinal region (LB1) is convergent or comprises at least one convergent portion in which the height (H) between the lower face (11) and the upper face (15) is smaller than the height (H1) in the region of the inflow side (7) as the distance from the inflow side (7) increases, and the second longitudinal region (LB2) is divergent or comprises at least one divergent portion in which the height (H) between the lower face (11) and the upper face (15) is greater than the height (H) at the end of the first longitudinal region (LB1) and/or at the beginning of the

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 treatment machine comprises at least two successive zones in an extraction direction of the material web between which a neutral zone is provided. In the neutral zone, a nozzle arrangement is provided adjacent to a zone exit wall and/or to a leading neutral zone wall on the one hand, and/or adjacent to the chamber inlet wall and/or a trailing neutral zone wall on the other hand, via which nozzle arrangement a gaseous fluid flow reaching a material web is generated. The nozzle arrangement is designed as follows: the respective gaseous fluid flow is directed at a blowing angle in the direction of the adjacent zone exit wall and/or the leading neutral zone wall or the zone inlet wall and/or the trailing neutral zone wall; and the gaseous fluid flow flows as far as the material web, following the zone exit wall, the leading neutral zone wall or the zone inlet wall and/or the trailing neutral zone wall.