Extrusion Asia Edition 1-2021

图3：Pan Era薄膜包装袋生产的总体图（图片：Pan Era） Picture 3: General view of the Pan-Era production of film packaging-bags (Photo: Pan-Era) MAS-ES混炼机，通过排气段进行多级熔体清洁 在Pan Era Group的项目规范中，最高端的一项功能是 具备一步加工生产出多种颜色的无微粒HDPE的能力，产品 适合于制造新型高质量包装薄膜或用于包装各种洗涤剂及其 他日用化学品的瓶子。 MAS的区域销售经理Juergen Morosz表示：“面临的挑 战是根据投入物料的成分和污染程度对其进行正确评估，并 对加工所需的系统进行设计。在与客户的紧密合作下，经过 一系列代表性的材料测试，我们找出了一种工艺技术解决方 案，可以最佳地发挥MAS挤出机的潜力。理想的解决方案是 源自于我们独立的ES混炼挤出机逐级串联组成的系统。系统 包括一台单螺杆挤出机，用于熔融和塑化经过洗涤和干燥后 的PE薄片，以及紧随其后的我们供货计划中的CDF 500-D双 盘式过滤器单元，细度为130μm的颗粒在这里被分离并隔 离。然后，通过侧进料方式，清洁的熔体流进入MAS锥形双 螺杆挤出机进料区。此时，熔体还不够清洁。其中仍有印刷 油墨残留和气味散发。为了消除这些污染物，我们在双螺杆 挤出机的特大的进料口处增设了一套真空装置，并使其成为 排气区。在这一区域，熔体中挥发性成分可以有效地排出。 从这里，聚合物熔体被继续输送，并被温和地压缩和均匀 化，直到最终到达第二个脱气区域，并进行第二次清洁 （图5）。熔体经过流动指数测量站后，最终到达造粒单 元。” 作为额外的收获，系统还提供理念上的混炼功能，该功 能实际上用于实现回收聚合物的高度均质化。由于它是ES混 炼系统的核心属性，因此有意将其用于扩展材料的应用范 围，经过混炼的材料可用于有技术要求的用途。为实现这一 点，MAS双螺杆挤出机的进料区只需加装真空装置，通过真 空装置可以添加粉状添加剂（例如滑石粉或碳酸钙），而无 需额外的侧进料器。这意味着Pan Era集团将有可能性扩大回 收HDPE的应用范围，使其应用范围包括满足技术应用要求 的多样化材料。 19 Extrusion Asia Edition 1/2021 T he Indonesian family company Pan Era Group with its head- quarters in North Jakarta is a group of companies active in multiple business sectors, one of them is the recycling of post- consumer plastic waste and processing it into film products. The founding of the company dates back to 1989 when its founder started grinding and washing several types of plastic waste, becoming one of the early players in this field. The company then progressed to producing recycled pellets and subsequently, in 1997 it then started producing plastic shopping bags and packaging film made from recycled materi- al. Ever since, the company has stayed true to its roots and has always used recycled material. To date, more than 95% of the plastic bags produced and sold by Pan Era Group are made using at least 80% recycled content. And it has achieved a mar- ket leader position, and is one of the most sought-after prod- ucts on the market. This indicates that the group possesses ex- cellent knowledge of the recycling process as well as firm dedi- cation to quality. Following years of continued growth, the company then ex- panded to Cikarang in the province of West Java, in 2011. Pro- duction quickly ramped up and within several years, the group has already used up almost all of its capacity. Currently this fa- cility is one of the most prestigious recycling plants in the re- gion, drawing praise from many of its visitors, as Pan-Era Direc- tor Wilson Pandhika confirms. (Picture 1) The group is now progressing on one of its most ambitious growth steps so far, which is the establishment of yet another plastic recycling plant in Cikande, about one and a half hours drive from the Indonesian capital of Jakarta. The new facility is projected to be one of the largest Polyethylene recycling plants in South-East Asia. (Picture 2 to 4). It is at this new location that Pan Era Group relies on Austrian recycling competence and has ordered an ES-compound extrusion line with an output of 1000 kg PE per hour from MAS. The "plus" of the MAS-extrusion-technology: The gentle polymer plasticization MAS stands for innovative extrusion technology, especially the conical twin-screw-extruders with co-rotating screws. They are 图2：Pan-Era 集团采用一步法工艺生产无颗粒品质的HDPE 不同颜色的彩色粒子，可用于生产新型高质量包装膜 （图片：Pan Era） Picture 2: Pan-Era Group produces in a one-stage-process particle-free HDPE-qualities in different colors, suitable for producing new high quality packaging films (Photo: Pan Era)