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What is PVC?

What is PVC
An article from ourThomas
Solid PVCFoamed PVC
Sheet typeSolid sheetSolid top layers with foamed core
Impact-resistantYesNo
MachinabilityGoodGood
PriceInexpensiveInexpensive
Total colours2 colours5+ colours
Sheet thickness (mm)2, 3, 4, 5, 6, 8, 10, 12, 15, 202, 3, 4, 5, 6, 8, 10, 13, 19
UV-resistantNoNo
Damp-proofYesYes
RecyclableYesYes
RecycledYesYes (Foamed PVC ECO)
TypeApplicationsPlasticisersIn our product range
Unplasticised PVC (uPVC)Solid strong form of PVCWindow frames, Cladding, Pipes NoneYes
Plasticised PVC (pPVC)Flexible and softElectric cables, Floors, Inflatable products YesNo
Chlorinated PVC (CPVC)Higher temperature resistance and better mechanical propertiesHot water pipes, Industrial- pipe systems, Sprinkler systems YesNo
Molecularly Oriented PVC (PVC-O)Molecularly oriented (stronger and tougher) Water pipes, Pressure applications NoneNo
1

Polymerisation

The process starts with the polymerisation of vinyl chloride monomer (VCM) to form polyvinyl chloride (PVC) resin. The VCM is subjected to high pressure and temperatures to initiate the reaction, which is catalysed by a peroxide or other initiators. The polymerisation reaction results in the formation of powdered PVC resin.
2

Mixing

The PVC resin is then mixed with various additives, such as stabilisers, lubricants and pigments. This improves its properties and performance. The additives are mixed with the PVC resin to form a homogeneous mixture.
3

Extrusion

The PVC mixture is then fed into an extruder, a machine that melts the mixture and pushes it through a die to form a continuous profile. The profile can have different shapes and sizes, depending on the design specifications.
4

Cooling

The extruded profile is cooled by passing it through a water bath or air cooling system to solidify it and maintain its shape
5

Cutting and finishing

The cooled profile is then cut to the desired length and finished according to specific application requirements, such as drilling holes, welding or gluing.

Solid PVC

  • Not possible
  • Bending (cold)
  • Coating
  • Engraving
  • Lasering

Foamed PVC

  • Not possible
  • Bending (cold)
  • Coating
  • Lasering
  • Polishing

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