Abstract: Calibration basket having exchangeable air guiding elements composed of porous material. The invention relates to a guiding device and to methods for guiding a plastic film, wherein the plastic film can be guided by means of an air cushion, wherein the guiding device comprises a plurality of blower elements (31) each having the foil owing features: at least one supporting element (35), at least one film-guiding element (34), which is at least partially porous, preferably microporous, and which is connected to the supporting element (35). At least one fastening element is provided, by means of which the supporting element (35) and the film-guiding element (34) can be detachably fastened to each other.

Abstract: Calibration basket having exchangeable air guiding elements composed of porous material. The invention relates to a guiding device and to methods for guiding a plastic film, wherein the plastic film can be guided by means of an air cushion, wherein the guiding device comprises a plurality of blower elements (31) each having the foil owing features: at least one supporting element (35), at least one film-guiding element (34), which is at least partially porous, preferably microporous, and which is connected to the supporting element (35). At least one fastening element is provided, by means of which the supporting element (35) and the film-guiding element (34) can be detachably fastened to each other.

Abstract: The invention relates to a film product (10) comprising a substantially continuous extension with an upper side (12), a lower side (14) and two laterally extending edges (16a), characterised in that a continuous edge portion (20a) made from a first material is arranged on each of the two edges (16a) and a continuous main portion (30) made from a second material is arranged between the edge portions (20a), the first material having a higher surface adhesion than the second material.

Abstract: The invention relates to a compression packaging for a compressible item to be packaged (30), the packaging being formed from a film (10) which is stretched at least monoaxially. The film (10) has an enveloping portion (11), with which the item to be packaged (30) can be enclosed, and an edge reinforcement (15) which adjoins the enveloping portion (11) and can at least partially cover the item to be packaged (30) on the end thee (31) thereof. The edge reinforcement (15) has a film thickness which is greater than the film thickness of the enveloping portion (11), whereby an improved protection of the item to be packaged (30) in the region of the end face (31) can be achieved.

Abstract: The invention relates to a film product (10) comprising a substantially continuous extension with an upper side (12), a lower side (14) and two laterally extending edges (16a), characterised in that a continuous edge portion (20a) made from a first material is arranged on each of the two edges (16a) and a continuous main portion (30) made from a second material is arranged between the edge portions (20a), the first material having a higher surface adhesion than the second material.

Abstract: The invention describes a blown film extrusion system (1), which comprises, as its characteristics, a blowing head (5), which extrudes a film tube (9), further a pinch-off device (8), which pinches off the film tube (9), and additionally film guiding elements (7, 13, 27, 28) that guide the film tube (9) between its extrusion by the blowing head and its pinching off. The inventive aspect is that the guiding elements (7, 13, 27, 28) contain a porous, preferably microporous material.

Abstract: A device to lay flat a film tube drawn from an inflated film bubble generated in a film blowing system includes lay-flat platens which delimit the film bubble and which are placed against the bubble in the form of a wedge. The platens are positioned in front of the squeeze rollers of a film take-up and winding device and have slip elements arranged transversely relative to the take-up device. A driven reversing frame can be provided to hold the lay-flat platens, support the squeeze rollers, and support guide rollers and turning bars about its rotating axis in a pivoting fashion. In order to decrease the friction between the film tube which is to be laid flat and the lay-flat platens, particularly for a reversing take-up, the slip elements have hollow sections including air blast nozzles or air blast slots facing the film tube to be laid flat. The hollow sections can be connected by lines to an air blast source.

Abstract: A withdrawal device for a plastic tubular film is manufactured in a blowing method by an extruder. To prevent the formation of center wrinkles in the withdrawal of plastic tubular film, at least one deflection cylinder and/or angle bar has a differing diameter across its length.

Abstract: An extrusion die for a blow head for making blown plastic films comprises inner and outer rings, which are made of a ferrous material, particularly steel, and define between them an annular orifice. Those surfaces of the inner and outer rings which define the die orifice are covered by a layer consisting of a metallic material having a higher thermal conductivity than steel.