高比例的填充粉笔使得主要用作下水管道的PVC管不仅价格便宜，而且还减少了化石资源的使用。在k2022上，巴顿菲尔辛辛那提提出了制造高填料含量PVC管的理想解决方案。基本的PVC配方和填充材料分别被送入生产线。然后将单个组件放在一个收集漏斗中，随后在与之相连的冷混合器中相互混合。混合后，成品配方通过垂直加药装置传递到挤出机的进料口。混合比和整个物料吞吐量都进行了重量监测和控制。沿白垩运输和白垩加药线的所有容器都配有搅拌器。因此，填充材料沿着整个路线保持运动，以防止桥接。一台twinEX 93-34平行双螺杆挤出机作为PVC配方的加工单元。加工单元具有特别适应的螺杆几何形状，具有抗磨损保护，以均匀均匀地运输和塑化混合物。 The advantage of this solution is its chalk content variability ranging from 30 to 100 parts, which can be easily adjusted at any time and at short notice to the formulation required for the specific product. A further benefit of direct gravimetric chalk dosing is the enormous process stability, which ensures a high-quality end product. Finally, the process eliminates the need for premixing of PVC and chalk in a heating/cooling mixer. This process change involves several benefits. Central heating/cooling mixers can be kept smaller in size, or any mixing capacities which become free can be made available to other production lines. De-mixing during material transport can be prevented, since the filler material is fed to the production line directly after transport.
在展会上展示的挤出机和重量计量装置的组合，可以使用单层管模生产含有填料的固体PVC管。对于中间层填充的三层管和外层不含填料的三层管，巴顿菲尔-辛辛那提提供合适的三层管模和锥形共挤出机。通过这种方式，可以经济高效地生产直径达400毫米的管道，当然也可以在其使用寿命结束后回收利用。
