What is PVC Rigid Sheet?

Monday 25th September 2017 Back to list

Plastics are also called synthetic resins and are broadly classified  into two categories: thermosetting resins and thermoplastic resins.
The thermosetting resins include phenolic resin and melamine resin,  which are thermally hardened and never become soft again. Thermoplastic  resins include PVC, polyethylene (PE), polystyrene (PS) and  polypropylene (PP), which can be re-softened by heating.
Usually, thermoplastics are supplied in the form of pelletised material  (compounds) with additives (antioxidants, etc.) already blended in it.  However, PVC resin is often supplied in powder form and long term  storage is possible since the material is resistant to oxidation and  degradation. Various additives and pigments are added to PVC during the  processing stage, and the blend is then converted into PVC products.

PVC pipe is made from a plastic and vinyl combination material.  The pipes are durable, hard to damage, and long lasting.  They do not rust, rot, or wear over time.  For that reason, PVC piping is most commonly used in water system, underground wiring, and sewer lines.
PVC was first developed in 1925 when a BF Goodrich employee, Dr.  Waldo Semon, attempted to invent a method for bonding metal and rubber.   After blending materials together to create a strong and flexible  material, Semon discovered PVC.  Nonetheless, the product remained  virtually useless for another decade.  In the late 1930s, it was found  to have great shock absorbing abilities.  This discovery led to the  creation of long lasting PVC tire treads.
Two decades later, PVC pipe was invented.  By heating PVC, a machine  called an extruder could be used to push it into hollow pipes.  This  made piping that was extremely solid and virtually indestructible.    Using these pipes for irrigation systems proved to be effective, and PVC pipe has since been considered an affordable and reliable means for wat.

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