So, if appearance is important, add a design feature such as a series of serrations to conceal these sink marks. Hollow profiles usually require vacuum sizing, which typically results in higher tooling costs. Eliminate or minimize projections inside a hollow and allow generous tolerancing, as there is no practical way to hold internal projection tolerances during cooling. PVC parts usually require a streamlined, stainless steel extrusion die. Streamlining is done to prevent burning and degradation of the PVC part.
Stainless steel is used for the extrusion die, as most PVCs are very corrosive.
Crescent Plastics guarantees your extrusion dies for the life of your extrusion program, and provides routine maintenance as required to ensure the quality of your tool. Inc. We've refined the process to an art. Click here to learn more. Click here to learn how we go about doing what we do. Let Crescent Plastics help .