| 摘要 |
A description is given of a device (1) suitable for guiding, during the phase of cooling, a tubular plastic film, in particular a tubular plastic film produced by blown extrusion. The guide device (1) comprises a supporting structure (2) to be mounted around the bubble of extruded film, whereto one end of a plurality of mobile arms (3) is hinged whose second end, in contact with the bubble of extruded film, carries means (4) of guiding said bubble. Each mobile arm (3) is made up of an articulated quadrilateral and comprises, preferably, means for the fine adjustment of the position of the guide means (4). This device also provides fumes filtering means (50,52) integral with each mobile arm (3) and movable with it so as to obtain a multi-point filtering. |
