Extrusion Asia Edition 2-2025

10 EXTRUSION & RECYCLING ASIA 2/2025 行业新闻 换网器显著提高 PVC 回收效率 Renolit 在其位于巴塞罗那地区的工厂生产高质量的软质 PVC 薄膜。得益于 Gneuss 的创新 SFneos 过滤系统—— 其过程恒定、连续换网器系列的最新成员，Renolit 现在能 够重复使用很大比例的回收材料，而不会影响产品质量或生 产效率。 Renolit 制造的柔性 PVC 薄膜涂覆在聚酯上，尽管经过分 离过程，但废料仍然含有少量残留的聚酯。这足以给传统的 滑板换网器带来问题 - 由于污染负荷而频繁更换会导致生产 中断和流动干扰，而使用柔性 PVC 会导致频繁的烧焦。 格诺斯公司提供给Renolit的SFneos换网器经过广泛定 制，与双螺杆挤出机完全匹配，具有极短和流线型的流 道，在流动模拟软件的帮助下设计。 SFneos 连续运行且压力稳定，即使在高污染负荷和变化 的情况下也是如此。 得益于 SFneos 的这些独特性能特征，Renolit 能够在 不中断生产的情况下处理高比例的含有残留聚酯的回收材 料，因此能够在不影响产品质量的情况下显著提高现有挤 出生产线的产量和效率。同时，通过使用废料（这种材料 通常被认为难以回收），Renolit 节省了宝贵的资源。 在后工业回收应用中，格诺斯的过滤系统可以在释放潜 力、提高流程成本效益和促进可持续发展方面发挥决定性作 用。 SFneos 过滤系统在 Renolit PVC 薄膜生产线中的应用 SFneos Filtration System in the production line of PVC lm at Renolit Major E ciency Improvements in PVC Recycling At its factory in the Barcelona region, Renolit manufac- tures high quality exible PVC lms. Thanks to its innova- tive SFneos Filtration System from Gneuss – the latest ad- dition to its range of process-constant, continuous screen changers, Renolit is now able to reuse a signi cant percent- age of recycled material without any compromises regard- ing product quality or production e ciency. The exible PVC lms made by Renolit are coated on to polyester and in spite of separating processes, the scrap still contains a small amount of residual polyester. This is su - cient to cause problems with conventional slide plate screen changers – the frequent changes due to the contamination load result in production interruptions and ow disturbances which, with exible PVC lead to frequent burn-ups. The SFneos screen changer supplied to Renolit by Gne- uss was extensively customised to exactly match the twin screw extruder, with extremely short and streamlined ow paths, designed with the help of ow simulation software. The SFneos operates continuously and pressure-stable, even with high and varying contamination loads. Thanks to these performance characteristics of the SF- neos, Renolit was able to process a high percentage of recycling containing residual polyester without produc- tion interruptions and were therefore able to signi cantly increase the yield and e ciency of their existing extru- sion line without compromising their product quality. At the same time, by using waste material (and this material is generally seen as di cult to recycle) Renolit is saving valuable resources. On post industrial recycling applications, the Filtration Systems from Gneuss can play a decisive role in unlocking potential, making processes more cost-e cient and contrib- uting toward sustainability. Gneuss Kunststo technik GmbH www.gneuss.com 为Renolit定制的 SFneos 换网器 Customized SFneos screen changer for Renolit