HOME PAGE COMPANY PRODUCTS NEWS EXHIBITIONS CONTACTS IT EN Special applications > Studded membrane SPECIAL APPLICATIONS Studded membrane Download pdf you have to request the quote BUGNATA MEMBRANE Anyone who knows this type of production knows how important it is to be able to use raw materials at low costs to contain the selling price, and what is less expensive than simple washed and ground material? However, it is also known that this post-consumer material contains significant percentages of fats and soaps that certainly do not help the extrusion process. Therefore it was necessary to study a special system that starts from the feeding of the flakes in the extruders, to the intensive degassing with high capacity pumps, to the extrusion screw able to absorb the high flow rates required. It is also known that the use of plastic material in this form involves the presence of impurities which, given the low thickness of the membrane, if not eliminated, would result in the inevitable presence of "holes" in the membrane itself, thus making it useless for the purpose! Therefore, the filtering phase of the molten plastic material required the use of a group of screen changers that are certainly impressive but absolutely effective: the elimination of the smallest harmful particles is guaranteed !! A suitable gear pump completes the plasticizing unit ensuring a constant feed to the 4400 mm wide extrusion head. The extruded product is then deposited on an aluminum alloy cylinder on which over 16,000 molding bosses made of highly conductive material are mounted. This point can be defined as the real heart of the process. This special grille gives rise to the embossed membrane. The thermoconditioning system of the calender cylinders is also of particular importance: this aspect has also been deeply studied by BG Plast technicians. With the same production, BG Plast is in any case able to create similar types of plants, however, using starting materials in the form of granules (virgin or regenerated). This obviously greatly simplifies the mechanical aspect concerning the transformation of the polymer thus using fewer resources both from the point of view of the installed powers and from the point of view of the initial investment. © 2013 - 2015 All rights reserved Powered by ids sas BG Plast Impianti srl VAT number 03124520127 via Venezia, 21050 Marnate (VA) ITALY T +39 0331 365865