How can you decrease density of PVC profile?

Answer 1

you can decrease it by foaming the PVC resin by adding a foaming agent, the foaming agent is usually in the form of powder where the smaller the grain size the smoother surface you get with smaller bubbles, for a free foaming process you add the foaming agent with the required quantity for the required density (usually the manufacturer specifies it in tables) for example if you need PVC with density of 0.6 g/cm3 add 1.5 % foaming agent (not real values), then you add a catalyst to ensure the homogeneity of the process and all of these compounds together are mixed in hot dry air flow and... I hope this helps u