Guide element for a tubular film
OwnerJens Spirgatis, Andreas Böhminventors
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Abstract
A guide element for a tubular film which is produced by blown film extrusion. The guide element includes a support structure having guides secured to the support structure and acting upon the circumference of the tubular film. The support structure includes a plurality of support limbs that are articulated to each other and that are received so as to be adjustable relative to each other by adjusting drives. At least one guide for the tubular film is secured to each support limb.
Claims13
A guide element for a tubular film (1) manufactured by a blown film extrusion process, comprising a support structure with guide means (27) fastened to the support structure and that act on a circumference of the tubular film, the support structure having a plurality of support legs (20, 21, 22) connected to one another in articulating manner and adjustably secured relative to one another by adjusting drive units (28, 28a), and at least one guide means (27) for the tubular film (1) fastened to each one of the support legs (20, 21, 22).
A flattening device for a tubular film (1) manufactured by a blown film extrusion process, comprising two flattening elements situated in diametrically opposite regions of the tubular film (1) and adjustable at an acute angle in relation to each other to transform an initially circular cross section of the tubular film (1), passing through oval cross sections, into a double-layered film web, and having lateral guide elements (2) situated between the flattening elements, associated with the tubular film (1), and for regions of the tubular film (1) left free by the flattening elements.
Dependencies are inferred from the claim text.