Extrusion Asia Edition 1-2021

降低单位成本 与其它CPP薄膜生产线相比，SML超宽CPP生产线的边 条比率要低得多。此外，通过边条挤出机实现边条在线回 收，是助力SML的CPP生产线获得商业成功的重要因素。因 不需要投入额外的人力即可实现更高产能，超宽生产线的单 位人工成本也较低。另外，在设备功率消耗方面（kW/kg）， 超宽幅生产线明显优于产能较低的窄幅CPP薄膜设备。 CPP金属化薄膜：完备的生产条件确保优异的产品质量 SML超 宽 CPP生 产 线 中 常 用 的 挤 出 机 组 合 为 Ø 180/90/90/90/90mm。为生产后续需进行金属化加工的CPP 薄膜，SML的挤出机还配备有盘式或烛式过滤器。这些大面 积过滤装置可有效去除熔体中颗粒甚小的胶团，避免薄膜在 后续金属化加工过程中出现缺陷。对于超宽CPP流延薄膜生 产线，SML推荐其W6000系列转塔式收卷机，收卷膜卷的最 大外径为1,300mm。增大的膜卷直径是提高CPP金属化薄膜 生产效率的主要推动力。由于蒸镀机的运行时间更长，换卷 次数减少，产生的废膜更少。SML的W6000系列转塔式收卷 机收卷25μm厚的薄膜时，其膜卷长达5万米！ 质量、可靠性、技术服务 SML是享誉世界的挤出系统技术领导者，已有25年以上 的发展历史，在中国北京和马来西亚吉隆坡设有分支机 构。SML研发制造的机械代表了可靠性、服役寿命和产品质 量的高标准。与SML合作可以为您提供可靠的项目实施，我 们在遵守发货时间、成本和设备性能方面保持有良好记录。 设立在北京的代表处为中国各地的众多用户提供全面支持， 特别是涉及到我公司产品的深入技术信息咨询、SML技术人 员在中国现场服务的灵活组织与协调，以及易损件和零备件 的快速发货。 “We from SML would say that machinery, that is reliably de- livering premium-quality film in constantly high volumes is a prerequisite. But at the end, the final key to commercial success are productivity and low unit costs,” says Huang Zefeng, Sales Manager Cast Film Extrusion, China. This is why SML is con- tinuously further-developing the widths of its CPP lines in ac- cordance with raising maximum output quantities. This hap- pens especially with regard to the markets in Asia, where SML premium CPP lines with a width of more than 5 meters are in operation for years. Recently, SML sold two extra-wide CPP lines with film widths of 6.5 meters and with an output-capaci- ty of up to 20 000 metric tons per year to Asian customers. 35 Extrusion Asia Edition 1/2021 Bringing unit-costs down Compared to other lines for CPP film, SML’s extra-wide CPP lines have a considerably lower ratio of edge trims. Additional- ly, the inline feedback of the edge trim scrap by a scraptruder essentially contributes to its commercial success. Labour costs per unit on extra-wide lines are also lower, as they do not re- quire additional personnel to produce higher volumes. And also in terms of power consumption (kW/kg), extra-wide lines clear- ly beat smaller CPP film machinery. CPP films for metallisation: perfect conditions for premium qualities A frequent extruder-combination in SML’s extra-wide CPP lines is Ø 180/90/90/90/90mm. Extruders from SML, which produce CPP films for metallisation in a subsequent separate process, are additionally equipped with disc or candle filters. These large area filters are capable of eliminating even small gel particles. This avoids defects in the film at the following metallising pro- cess. For extra-wide CPP cast film lines, SML recommends its turret winder W6000 with a maximum outer roll diameter of 1,300 mm. Bigger roll diameters are a major boost in produc- tion efficiency for the manufacturing of metallising CPP films. Due to longer running times at the metalliser, there are less roll changes with less film waste. SML’s turret winder W6000 en- ables a roll length of 50 000 meters or – 50 km! – of 25 µm film. Quality, reliability, service SML is a globally reputated technology leader for extrusion sys- tems with branch offices in Beijing, China and Kuala Lumpur, Malaysia since more than 25 years. Machinery developed and manufactured from SML stand for high standards in terms of reliability, longevity and output quality. Partnering with SML provides you a reliable project implementation and a proven track record of adhering to the agreed times, costs, and perfor- mance values. The representative office in Beijing offers com- prehensive support to customers all over China: especially when it comes to in-depth technical information about the SML products, the flexible organization of on-site services by SML technicians located in China or the fast shipments of wear and spare-parts. www.smart-extrusion.com ➠ SML Maschinengesellschaft mbH Gewerbepark Ost 32, A-4846 Redlham, Austria www.sml.at , www.sml.at/zh-hant