B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 47/00 (2006.01) B29C 53/10 (2006.01)
Patent
CA 2691559
The invention relates to a device for producing blown films, comprising an extrusion device generating a tubular film (1) and a flattening device, associated with the tubular film (1), having two flattening elements, arranged on diametrically opposite zones of the tubular film and adjustable in relation to each other at an acute angle, for transforming the cross-section of the tubular film (1), which is first circular, then oval, to a double-layer film web. The invention is characterized in that lateral guide elements (2) for the zones of the tubular film (1) that are omitted by the flattening elements are arranged between the flattening elements and are associated with the tubular film and the lateral guide elements (2) have an adjustable contour.
La présente invention concerne un dispositif de réalisation de films de soufflage comprenant un dispositif d'extrusion produisant un film tubulaire, et un dispositif d'application à plat associé au film tubulaire et comprenant deux éléments d'application à plat disposés dans des zones diamétralement opposées du film tubulaire, qui peuvent être réglés pour former un angle aigu l'un par rapport à l'autre et qui servent à faire passer la section tout d'abord circulaire du film tubulaire à des sections ovales pour finalement former un film plan double, des éléments de guidage latéral destinés aux zones du film tubulaire dégagées par les éléments d'application à plat, se trouvant entre ces éléments d'application à plat et étant associés au film tubulaire, les éléments de guidage latéral présentant un contour réglable.
Boehm Andreas
Spirgatis Jens
Reifenhaeuser Gmbh & Co. Kg Maschinenfabrik
Robic
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