Extrusion Asia Edition 2-2018

43 Extrusion Asia Edition 2/2018 Gamma Meccanica S.p.a. Via Sacco e Vanzetti, 13 42021 Bibbiano (RE) Italia www.gamma-meccanica.it 在参与的项目是"Are you R”。该项目是 为了增强欧洲人民对塑料再生重要性的 认识。其目标是通过大量的文字、图片 以及有趣的动画片，传播回收利用文 化。项目揭示了塑料的优势，解释了保 持正确的行为降低塑料对于环境保护的 影响如何重要。 G amma Meccanica has been operat- ing in the plastic recycling machine- ry sector since 1987. The Tandem tech- nology has been delivered for many years and recently has been redefined. The most recent systems delivered are the result of continuous technological improvement with a high level of auto- mation, maximum quality of the recycled product (granules) and tremendous ener- gy savings. Thanks to GM Tandem tech- nology it is possible to recycle heavily printed, high humidity and highly conta- minated plastic materials. The line is composed of a COMPAC unit equipped with the Ecotronic ® system, a primary extruder, primary screen changer, a connection neck with a spe- cial degassing chamber, a secondary ex- truder and, as an option, a second screen changer for finer filtration / purifi- cation of the melt and then the pelletiz- ing system. The ECOTRONIC ® system, by increasing the number of revolutions above the no- minal speed of the motor, allows to con- trol the temperature without adding wa- ter and to process materials with a high percentage of humidity. Ecotronic gua- rantees a notable energy savings (up to 40%). An Italian customer has recently installed GM Tandem 160 line for the recycling of milled HDPE. The choice of the customer was determined by the need to recover parts of agricultural plants, in particular irrigation pipes, with high level of conta- mination from the ground and other re- sidual materials. The material to be recy- cled is sent to the Tandem regeneration line directly from the washing plant with humidity rate of approximately 8%. Thanks to the patented and innovative degassing system, 10 times more effi- cient than traditional systems, humidity is expelled directly during the extrusion phase. The double filtration up to 100 microns, guarantees the removal of even the smallest parts of contaminants. The production capacity of this Tandem line and with this type of material is 1200 to 1400 kg/hr. Another recent case is the GM Tandem 180, purchased by a North American customer for the regeneration of non- woven PP, raffia bags in PP, BOPP heavily printed film and PE film. These are post- consumer and post-industrial wastes with a high rate of contamination like paper, aluminum, PET, PA and sand. In this case the GM Tandem 180 line has the primary extruder of Ø 180 and the secondary extruder of Ø 210. The gua- ranteed production is 1500 to 1700 kg/hr. Given the success of the Tandem lines and the growing interest of recyclers, the company is committed to developing new models. The next line that will be created is GM Tandem 210, composed of two extruders: the first one with Ø 210 and the second extruder of Ø 250, with a production capacity start- ing from 2000 kg/hr. Gamma Meccanica has always been aware of the importance of recovering such a precious resource as plastic. For this reason, in addition to offering con- tinuous improvement of the perfor- mances of its lines for the regeneration of plastic materials, together with a group of Italian companies that have been active for many years on the recy- cling machinery market, and the Europe- an association of plastic recyclers (PRE), it is participating in the project "Are you R”. This projects aim is to raise aware- ness among the European people on the importance of plastic recycling. The goal is to spread the culture of recycling. Through a number of documents, pho- tographs and funny animation films, the project reveals the advantages of plastics and explains how its impact on the en- vironment could be reduced if correct behaviors were maintained.