Extrusion Asia Edition 2-2021

改造熔体过滤器使德国 PE 包装薄膜制造商奥尔登 堡Oldenburg能够处理其生产废料 。 Retrofitting its melt filter enables the German PE packaging film manufacturer Oldenburg to process its production waste. Oldenburg 是一家生产 PE 包装膜的制造商，例如气泡 膜、拉伸膜和泡沫板。该公司提供各种不同格式的高质量薄 膜。在启动、关闭、产品更换等过程中产生的薄膜废料被收 集并在中央回收挤出机上重新造粒。 这台中央回收挤出机配备了传统的换网器。使用这种换 网器，实际上不可能过滤得足够细，因此在该生产线上回收 的材料可用于吹塑薄膜挤出生产线上的更薄的薄膜规格。如 果回收材料没有经过足够精细的过滤，吹膜生产线上的简 单、不连续的换网器会很快堵塞. 在多家不同的熔体过滤系统潜在供应商进行试验，不仅 评估了换网器的性能，还评估了试验期间处理的回收材料的 质量后，奥尔登堡决定采用 Gneuss RSFgenius，其拥有专 利的自清洁系统. Oldenburg 将一台 Gneuss RSFgenius 175过滤器 改装 到他们现有的回收挤出机上，从那时起，Oldenburg 能够过 滤足够细的 (75 µm)，这样由废料制成的颗粒可以放回他们的 吹膜挤出机中（而不是像以前那样出售）以前大多是这种情 况）。这些吹膜挤出机配备了不连续的换网器。 使用已使用 Gneuss RSFgenius 预过滤的再造粒材料 时，吹膜生产线上的不连续换网器上更换网片的间隔实际上 与处理原始材料时相同，且再造粒材料的质量如下它最多可 以 100% 用于代替原始材料。 得益于中央回收线上的 RSFgenius 175 极其高效、独特 的自清洁系统，无需频繁更换滤芯，反冲洗造成的材料损失 量保持在最低水平。 公司董事 Michael Oldenburg 先生证实，格诺斯熔体过 滤系统达到或超过了事先承诺的所有性能特征，尽管现有回 收线的空间要求非常紧张，格诺斯还是能够量身定制安装 这样就可以安装它而无需移动现有设备的位置。 34 回收利用 - 用户报告 Extrusion Asia Edition 2/2021 PE-内部回收：旋转过滤器使之成为现实 Recycling – Case Study: PE-Inhouse Recycling – the Rotary Filter Makes it Happen O ldenburg is a manufacturer of PE packaging film such as bubble film, stretch and foam sheet. The company offers a wide range of high-quality films in different formats. The film waste which occurs during start up, shut down, product changes etc. is collected and repelletised on a central recycling extruder. This central recycling extruder was equipped with a conventio- nal screen changer. With this screen changer, it was practically not possible to filter sufficiently fine, that the material recycled on this line could be used for thinner film gauges on the blown film extrusion lines. If the recycled material was not filtered finely enough, the simple, discontinuous screen changers on the blown film lines would block up quickly. After running trials at several different potential suppliers of melt filtration systems and evaluating not only the performance of the screen changers but the quality of the recycled material processed during the trials, Oldenburg decided in favour of the Gneuss RSFgenius, with its patented self-cleaning system. Oldenburg retrofitted a Gneuss RSFgenius 175 to their existing recycling extruder and since then, Oldenburg has been able to filter sufficiently fine (75 µm) that pellets made from their scrap 采用全自动自清洁旋转式过滤系统RSFgenius回收PE包装膜 PE-packaging film recycling with fully-automatic and self- cleaning Rotary Filtrationsystem RSFgenius