The hardness of vinyl chloride resins can be varied widely by changing the mixing ratio of plasticizer.
It is possible to obtain moldings that are hard at room temperature if vinyl chloride resin is molded with the addition of a firming agent under heat.
They are used for water pipes, rain water gutters, cosmetics cabinets.
Also, they are used for tanks and piping at chemical plants because of their excellent chemical resistance. On the other hand, plastics are also used for soft goods such as wrappers, belts, and handbags.