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sandeep lokhande
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Separating PVC from PET

12/19/2008 3:00 PM

why it is necessary to separate pvc granual from pet when recycling ?

what it will affect

is it because of melting point.

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editorgbanalysts
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#1

Re: Separating PVC from PET

12/19/2008 5:20 PM

Your suspicion is one good reason. The varying melting points affects the granularity of the final products if processed at the lower temperature or cause burns of the lower melting components and thus still impact the granularity due to burn particles.

At high temperature when PVC burns it could cause toxic gas depending on the environmental/ambient contents.

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yesyen
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#2
In reply to #1

Re: Separating PVC from PET

12/20/2008 1:00 PM

That's right...

PET - Polyethylene terephthalate melting point: 260 °C.
PVC - Polyvinyl chloride Melting point: 80 °C
See a huge mismatch. When PVC is in molten form PET would be still as granules. Raising the temperature more to melt PET granules, PVC would decompose.

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sandeep lokhande
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#3
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Re: Separating PVC from PET

12/20/2008 1:55 PM

when we are recycling how can we separate pvc and pet.

or machine itself separate when we are producing flakes or Granuales.

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