AFROS S.P.A. Patent applications |
Patent application number | Title | Published |
20140234167 | METHOD AND HIGH-PRESSURE MIXING APPARATUS WITH SELF-REGENERATING SEAL - A method for forming a self-regenerating seal in a mixing chamber of a high-pressure mixing apparatus for polymeric components suitable for providing a reactive mixture for a polymerisable resin. An annular sealing element is provided in a circular housing seat inside the mixing chamber, in a sealing zone downstream the injection holes for the polymeric components; worn and/or torn parts of the annular sealing element are automatically regenerated by the same reactive mixture delivered during operation of the mixing apparatus. A high-pressure mixing apparatus with self-regenerating sealing element is also claimed. | 08-21-2014 |
20120300574 | SELF-CLEANING HIGH-PRESSURE MIXING APPARATUS FOR COMPOSITE MATERIAL - A high-pressure mixing apparatus suitable for producing a composite material from a reactive mixture of at least a first and a second chemical components and from a filler material, including a main body conformed with a discharge duct for the composite material, a high-pressure mixing chamber for the chemical components, and a first cleaning member axially displaceable between a forward position and a rearward position within the discharge duct. | 11-29-2012 |
20110221085 | METHOD AND APPARATUS FOR FEEDING A POLYURETHANE MIXTURE INTO HOLLOW BODIES - A method and apparatus for feeding a polyurethane mixture suitable to form a thermally insulating layer inside hollow bodies, such as hollow walls of a refrigerator cabinet, freezer, display counter or insulating panel. A polyurethane mixture resulting from chemically reactive components, supplied by a high-pressure mixing device, is injected into a cavity of a hollow body extending in a horizontal plain. The mixture is injected at a first flow-rate and a first injection speed, to be poured into a first deposition zone farthest from the injection point. Subsequently, the flow-rate and the injection speed of the polyurethane mixture are gradually reduced in a controlled manner, to be poured in successive deposition zones towards the injection point of the polyurethane mixture, along a distribution strip, allowing the injected mixture to spread out throughout the cavity of the hollow body along isometric expansion lines. | 09-15-2011 |
20100137508 | METHOD AND HIGH-PRESSURE MIXING DEVICE FOR FILLED POLYURETHANE RESINS - A method and device for high-pressure mixing of polyurethane components, in which one of the polyurethane components is pre-mixed with a filler material and/or with an additive. The device comprises a mixing chamber into which first and second polyurethane components are radially injected, and a slide valve which moves between a fore or closure position and a rear or opening position of the mixing chamber. The slide valve at its fore end is provided with a feeding chamber for a third polyurethane component pre-mixed with the filler material and/or additive, and an outlet hole; a cleaning pin for the outlet hole slides into a longitudinal guide hole of the slide valve. | 06-03-2010 |