Rollepaal helps pipe producers manufacture reliable and material-efficient PVC sewer and drainage pipes using Multi-Layer and Solid Wall extrusion technology.
Sewer and drainage systems place different demands on a pipe than pressure-water applications. These pipes must withstand external soil and traffic loads, maintain their shape during installation and operation, and provide reliable long-term performance in challenging underground conditions.
For non-pressure PVC pipes, ring stiffness is therefore a key design parameter. At the same time, smooth internal surfaces, chemical resistance, and efficient use of raw material are important considerations for sewer-pipe production.
Rollepaal supports both conventional Solid Wall PVC production and Multi-Layer structures, where material can be distributed more efficiently across the pipe wall.
Choose the right production technology
Sewer pipes can be produced using conventional solid-wall structures or material-efficient multi-layer designs. The right approach depends on pipe specifications, stiffness requirements, material strategy, and production objectives.
Multi-Layer technology combines different pipe-wall layers in one continuous extrusion process. This allows pipe producers to use recycled or foamed material in the core while maintaining controlled inner and outer layers.
Meeting pipe specifications with the lowest practical material use requires control of both pipe structure and production process.
Maintain ring stiffness
Sewer pipes must resist deformation from external soil and traffic loads. Pipe structure, wall design, and material properties all contribute to the required stiffness.
Control layer distribution
In Multi-Layer production, consistent skin and core distribution is essential for predictable pipe quality and efficient material use.
Control recycled material
Recycled PVC can be used effectively in the core, but stable feeding, processing, and quality control are essential for consistent production.
"With the multi-wall lines, we can foam the product and make a solid wall product and use recycled material, which gives us total flexibility."
Common questions about PVC pipe production for sewer infrastructure
Sewer and drainage pipes are typically non-pressure pipes and can be produced as conventional solid-wall PVC pipes or as structured Multi-Layer pipes. Multi-Layer designs can use a recycled or foamed core between solid inner and outer PVC skins.
Underground sewer pipes are subjected mainly to external loads from soil, installation conditions, and traffic. Ring stiffness describes the pipe's resistance to deformation under these loads and is therefore a key performance parameter for non-pressure pipes.
Yes. In Multi-Layer pipe structures, recycled PVC can be used in the core, where it contributes less to the structural load than the outer layers. Material quality, layer distribution, processing conditions, and applicable pipe standards still need to be controlled.
Which technology fits your sewer pipe production?
Our process specialists can help you choose the right pipe structure and extrusion technology based on your stiffness requirements, pipe dimensions, material strategy, and production objectives.
-Oct-23-2024-08-43-42-2233-AM.jpg?width=450&height=262&name=Kopie%20van%20Featured%20Image%20(450x263px)-Oct-23-2024-08-43-42-2233-AM.jpg)
%20(2)-4.png?width=450&height=262&name=Featured%20Image%20(450x263px)%20(2)-4.png)
%203.jpg?width=450&height=262&name=Featured%20Image%20(450x263px)%203.jpg)