HOME PAGE COMPANY PRODUCTS NEWS EXHIBITIONS CONTACTS IT EN Special applications > PET extrusion SPECIAL APPLICATIONS PET extrusion Download pdf you have to request the quote PET EXTRUSION In recent years there has been an increasingly strong need to use PET bottle waste also for the production of thermoforming foil. Various technologies confronted each other in this field, all aimed at avoiding the drying (with the relative high costs) of the flakes before being fed into the extruder. With the aim of containing the costs of the plant, BG PLAST has developed a single screw extruder which, through a multiple dosing unit for flakes, virgin and masterbatch, can guarantee the achievement of a high quality only a few points of IV measured on the extruded sheet with respect to the initial values of the fed waste. In fact, we know how much the presence of humidity in PET affects the intrinsic viscosity of the product (which must then be thermoformed). This humidity must be eliminated through a very high performance vacuum system, obtained with a special high performance pump. For the use of food packaging, the presence of virgin material in contact with food is required, so the central extruder, fed with flakes, is completed by a co-extruder fed with virgin material. This solution allows to produce an ABA multilayer sheet with the following percentages: 5-90-5%. The presence of a silicone bath along the extrusion line is the only detail that differentiates the downstream from a normal PP or PS sheet line. In order to be competitive on all fronts, BG PLAST is finalizing important commercial agreements with an important European manufacturer of co-rotating twin-screw extruders. © 2013 - 2014 All rights reserved Powered by ids sas BG Plast Impianti srl VAT number 03124520127 via Venezia, 21050 Marnate (VA) ITALY T +39 0331 365865