Reifenhaeuser GmbH & Co. KG Maschinenfabrik Patent applications |
Patent application number | Title | Published |
20160096307 | COEXTRUSION APPARATUS, SINGLE-LAYER EXTRUSION APPARATUS AND RETROFIT KIT AS WELL AS A METHOD FOR MEASURING A LAYER THICKNESS, FOR PRODUCING A PLASTIC FILM, AND FOR RETROFITTING AN EXTRUSION APPARATUS - A coextrusion apparatus, a single-layer extrusion apparatus, a retrofit kit, as well as to a method for measuring a layer thickness, for producing a plastic film, and for retrofitting an extrusion apparatus. From the state of the art, it is known to add a detection agent in the form of a fluorescent granulate into the starting material at the extruder, in order to be able to measure the layer thickness of the layer in the film composite produced from this starting material. However, it is proposed to feed in a detection agent only beyond the extruder. This leads to a clearly shorter running time of the detection agent through the system and thereby to clearly faster measurability of changes in the production parameters. | 04-07-2016 |
20150367532 | SINGLE-SCREW PLASTIFICATION MACHINE AND METHOD FOR PLASTIFICATION OF A STARTING MATERIAL - For almost 100 years, extruders have been built in such a manner that at a predetermined screw diameter, a corresponding throughput capacity is achieved, depending on the process conditions. | 12-24-2015 |
20150151482 | BLOWN FILM INSTALLATION, METHOD FOR PRODUCING A BLOWN FILM STRIP AND FILM PRODUCED THEREWITH - In blown film installations, it is known to provide longitudinal stretching of the produced double layer film strip downstream of the draw-off, more precisely downstream of the reversing unit and upstream of the winder. It is also known to stretch the down-drawn film, wherein the film must then be preheated owing to the long cooling path from the draw-off. According to a first feature, the present invention specifies warming the film above the draw-off and then treating it mechanically. The film can thereby be brought with only little energy from a first level of warmth to a temperature level at which it can easily be worked. According to a second feature, the invention specifies providing a tractive force breakdown brake. | 06-04-2015 |
20140066279 | FOLDING BLADE FOR A BLOWN FILM LINE AS WELL AS BLOWN FILM LINE WITH SUCH A FOLDING BLADE - The invention relates to a folding blade for a blown film line, as well as to a blown film line equipped therewith. | 03-06-2014 |
20130046069 | Method and apparatus for producing a film web from thermoplastic material and film produced thereby - The invention relates to a method and an apparatus for producing a film web made of thermoplastic material in which the thermoplastic material is extruded in at least one layer as plastic melt from a wide-slit nozzle in an extrusion direction and subsequently led away over at least roller, wherein tensile forces are exerted in the extrusion direction and transversely to the extrusion direction in order to stretch the film web longitudinally and transversely, wherein during application of the tensile forces in and transversely to the extrusion direction the film web has a temperature at least corresponding to the melting temperature of the same. | 02-21-2013 |
20120321733 | COEXTRUSION ADAPTER - A device for producing multi-layer composites made of thermoplastic materials, including a coextrusion adapter through which the thermoplastic materials can flow. The adapter has an inlet opening and an outlet opening, in which the thermoplastic materials are combined in layers. The coextrusion adapter has a modular design including a plurality of housings stacked on top of each other in a modular manner, each having a central channel arranged in the housing and at least one coextrusion channel opening into the respective central channel. The central channels of the housings stacked on top of each other continue one another, and the thermoplastic materials can flow through the central channel and the coextrusion channels in the direction of the outlet opening. Each housing further includes a receiving bore that extends through the central channel and into which a coextrusion pin can be inserted, which in turn has a channel bore that continues the central channel and in some regions forms a partial section of the at least one coextrusion channel between the outer surface and the wall of the receiving bore. | 12-20-2012 |
20110304071 | Spiral distributor, die head, blown film line, method for manufacturing a blown film and a blown film - Foil extrusion lines use spiral distributors for producing a melt which is as homogeneous as possible during operation. The spiral distributors are mostly available as cylindrical or conical axial spiral distributors or as radial spiral distributors. | 12-15-2011 |
20110304070 | Spiral distributor, die head, blown film line, method for manufacturing a blown film and a blown film - Spiral distributors for plastic melt are often used for manufacturing foils in blown film extrusion lines. They overlie several partial flows of melt on their way to the ring-shaped outlet nozzle. The spiral distributors are designed either as cylindrical or truncated cone-shaped axial spiral distributors or as plate-shaped radial spiral distributors. In an axial spiral distributor several spiral channels are disposed as a multiple screw. In the case of a radial spiral distributor, several spiral channels are disposed as multiple spirals. | 12-15-2011 |