PVC Granules for Capillary Drainage Pipes

Pvc Granules For Drainage Pipe

For manufacturing advanced capillary drainage pipes, our PVC granules are engineered to meet a dual challenge: they must process with exceptional precision to form the intricate micro-surface texture, while providing the long-term structural integrity and chemical resistance required for buried drainage applications.

Core Formulation for Capillary Performance
The key to a successful capillary surface lies in the compound’s melt flow characteristics and filler system. The granules must have a consistent and stable melt flow to ensure the fine capillary channels are reproduced accurately and uniformly along the entire pipe length during extrusion. This requires a carefully balanced lubrication system and the use of processing aids. The selection and particle size of fillers (like calcium carbonate) are also critical; they must be fine and evenly dispersed to avoid disrupting the delicate surface pattern while still contributing to the pipe’s stiffness and cost-effectiveness. The formulation will be based on a rigid PVC-U (unplasticized) compound, ensuring the necessary strength and durability.

Ensuring Pipe Performance
Beyond the surface structure, the granules deliver all essential properties for a reliable drainage pipe:

  • High Impact Strength: To withstand installation stresses, soil pressure, and potential impacts without cracking, using impact modifiers like CPE or acrylics.

  • Excellent Chemical Resistance: To endure long-term exposure to soil acids, alkalis, and various substances in wastewater without corroding.

  • Good Ring Stiffness (SN Rating): To resist deformation from the surrounding soil load once buried.

  • Weather and UV Resistance (for exposed sections): For pipes used in above-ground applications before burial.

This specialized compound enables the production of pipes that combine the passive, efficient water collection of a capillary surface with the proven, robust performance of high-quality PVC drainage systems.

Note: The most critical parameter for your application is the melt flow and processing behavior, which must be fine-tuned through specific lubricants and stabilizers to achieve the perfect capillary surface finish.

I hope this detailed description and specification table is helpful for your product development. If you have a target Ring Stiffness (SN) class or other specific standards for these pipes, I can help refine the specifications further.