Treatment machine for a flexible material web, in particular a plastics film, which can be passed through a treatment furnace

A treatment machine for flexible material webs which can be passed through treatment furnaces, comprising:

• the treatment machine comprises at least two successive zones in an extraction direction of the material web, having a zone separation device,
• in relation to the extraction direction (A) of the flexible material web, the zone separation device comprises 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,
• wherein the injection device (AC-E) is also designed such that the gaseous fluid flow from the injection device (AC-E) impinges in transverse direction obliquely onto the flexible material web and thus on the material web plane (E) formed by the material web at a blowing angle (α) formed with respect to the flexible material web or with a blowing angle component (α) formed with respect to the flexible material web of less than 80°, wherein the blowing angle (α) or the blowing angle component (α) lies in an angular plane (WE) running perpendicularly to the extraction direction (A) and thus perpendicularly to the flexible material web.