PET (Polyethylene terephthalate)

 

Polyethylene terephthalate also known as PET or PETE is a thermoplastic polymer that belongs to the polyester family. It is formed from terephthalic acid and ethyl glycol via the poly-condensation reaction of monomers. PET (polyethylene terephthalate) has excellent chemical resistance and barrier properties, good solidity, rigidity, wear and abrasion resistance. At high temperatures PET is very sensitive to moisture.
Its crystallinity is enhanced by the addition of nucleating agents and crystal growth accelerators. Crystalline PET (40-50% crystallinity) has excellent mechanical properties and a high heat deformation temperature (comparable to PA6 and PBT), modulus and brilliance.
For this reason it is used in the automotive and engineering polymers sector.
Using low mold temperatures, with PET it is possible to obtain transparent moldings without fillers.
PET is the most widely used polymer in the bottling industry due to its transparency combined with its mechanical and gas barrier properties.

Chemical formula PET: (C10H8O4)n
CAS Number PET: 25038-59-9
Chemical Name PET (IUPAC): Poly(ethylene terephthalate)
Recycling Code PET: number 1
Recycling Symbol PET: simbolo riciclo PET

PET commercial names and producers

 

  • Arnite (DSM)
  • Crastin (DuPont)
  • Eastapak (Eastman)
  • Impet (Celanese)
  • Lighter (Equipolymers)
  • Ramapet (Indorama Ventures)
  • NeoPet (Neogroup)
  • Papet (Lotte Chemical)
  • Skygreen (SK chemicals)
  • CR (Novapet)
  • PETRA (BASF)
  • Kebater (Barlog)
  • Kopet (Kolon)
  • ParaStar (Eastman)
  • Polyclear (Invista)
  • Rynite (DuPont)
  • Tecopet (Eurotec)
  • Tritan (Eastar)
  • Valox (Sabic)

PET Italian distributors

 

  • SIRT (Skygreen, Indorama, Selenis)
  • BIGLER (Polyclear)
  • XIFA (Xylex)
  • Schulman (Schuladur, Matrixx, Accucomp)
  • Mega Polymers (Arnite, Durastar, Eastpak, Eastar, Impet, Petra, Rynite)
  • PolyOne (Eastar, Rynite)
  • ALBIS (Eastar, Ultradur, Makroblend, Pocan)
  • Biesterfield (Rynite)
  • Nexeo (hiFill, Petra, Pocan)
  • RESINEX (Arnite, Impet, Lighter)
  • Ultrapolymers (Luvocom, Valox, Papet, EcoGreen rPET, CumaPET)
  • TER Plastics (Arnite A)

Main compound PET

 

  • PET-GF15 (Polyethylene Terephthalate with 15% fibre glass)
  • PET-GF30 (Polyethylene Terephthalate with 30% fibre glass)
  • PET + chain extender (Polyethylene Terephthalate with chain extender agents)
  • PET + Nucleating agents (Polyethylene Terephthalate with nucleating agents)
  • PET/PBT (Blend of Polyethylene Terephthalate and Polybutylene Terephthalate)
  • PC/PET (Blend of Polyethylene Terephthalate with Polycarbonate)
 

Chemical e physical properties:

Drying is essential, before processing,. PET is very sensitive to hydrolysis. It is advised to keep the moisture content below 0.02%.
The value of the intrinsic viscosity for the PET resin is very important and analogous to the Melt Flow Index (MFI). In general, bottles made from PET have an intrinsic viscosity value IV of about 0.8 dl / g. Otherwise, food trays have a measurement of about 0.6 dl / g.
Today PET is one of the most processed and produced materials in the world. Almost all plastic bottles are produced in PET.

Today PET resin is also the most recycled plastic polymer of all. Thanks to its high mechanical and physical properties, it is in fact possible to reuse this resin to produce many other components.

PET standard density: 1,3 - 1,4 g/cm3 (ISO 1183)
PET melting point Tm: 245-265 °C
PET Glass Transition Temperature Tg: 70 - 80 °C

 

PET market applications

 

  • Food containers (Food Contact)
  • Bottles (Beverage)
  • Automotive
  • Electrical and electronic components

PP transformation technologies

 

  • Injection molding
  • Compression molding
  • Extrusion
  • Blow molding
 

History and Trivia PET:

PET was first announced in 1941 by Whinfield and Dickson.
PET fully represents the development and growth that the plastic world underwent around 1970. In the case of plastic bottles alone, in almost only 20 years, there has been a transition from a null market to 3 million tons of processed material.
Until 1960 it was considered a non-workable injection molding resin due to its high hygroscopicity and slow crystallization. However, towards the end of the 1960s, research on nucleating agents capable of resolving these difficulties allowed PET to become used for numerous applications.

 

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Compound

PET-GF30 polyethylene terephthalate

Recycled SRM /Regrinded / Industrial By-Product / Industrial compound QUALITY-RECYCLED QUALITY-RECYCLED

Rynite 530HTE NC010
granule/pellet Natural / Neutral 2800 Kg octabin 1.10 €/Kg

Polymer

PET-G glycol modified polyethylene terephthalate PETG

Recycled SRM /Regrinded / Industrial By-Product / Industrial compound QUALITY-RECYCLED QUALITY-RECYCLED

PETG NERO RIGENERATO
granule/pellet Black 300000 Kg bigbag 1.000-1.100 kg 0.98 €/Kg

Polymer

PET polyethylene terephthalate

First choice - Virgin QUALITY-PRIME QUALITY-PRIME

VINAPET G080A
granule/pellet Natural / Neutral 60000 Kg bags on pallet 1.60 €/Kg

Polymer

PET polyethylene terephthalate

First choice - Virgin QUALITY-PRIME QUALITY-PRIME

PET RESIN 31W56/W
granule/pellet Natural / Neutral 60000 Kg bags on pallet 1.60 €/Kg

Polymer

PET polyethylene terephthalate

First choice - Virgin QUALITY-PRIME QUALITY-PRIME

PET RESIN 31W56/W
granule/pellet Natural / Neutral 60000 Kg bags on pallet 1.60 €/Kg

Polymer

PET polyethylene terephthalate

Recycled SRM /Regrinded / Industrial By-Product / Industrial compound QUALITY-RECYCLED QUALITY-RECYCLED

PET MACINATO
regrinded Green 15000 Kg bigbag 1.000-1.100 kg 0.79 €/Kg

Polymer

PET polyethylene terephthalate

Recycled SRM /Regrinded / Industrial By-Product / Industrial compound QUALITY-RECYCLED QUALITY-RECYCLED

POLYMER - PET R-PET FLAKES RECYCLED /REGRINDED FLAKES- BROWN COLOR
flakes Amber 200000 Kg bigbag 1.000-1.100 kg 0.67 €/Kg

Polymer

PET polyethylene terephthalate

Recycled SRM /Regrinded / Industrial By-Product / Industrial compound QUALITY-RECYCLED QUALITY-RECYCLED

GRANULO REPRO VERDE
cylindrical granule/pellet Green 1200 Kg bigbag 1.000-1.100 kg 0.78 €/Kg

Polymer

PET polyethylene terephthalate

Recycled SRM /Regrinded / Industrial By-Product / Industrial compound QUALITY-RECYCLED QUALITY-RECYCLED

LASTRA MACINATA CLEAR PET/PE
regrinded Transparent 26000 Kg jumbo bag 1.400-1500kg 0.35 €/Kg

Polymer

PET polyethylene terephthalate

First choice - Virgin QUALITY-PRIME QUALITY-PRIME

NEOPET 80
cylindrical granule/pellet Transparent 24000 Kg bigbag 1.000-1.100 kg 1.25 €/Kg

Polymer

PET polyethylene terephthalate

First choice - Slow moving QUALITY-PRIME QUALITY-PRIME

COREPET
granule/pellet Light grey 23700 Kg jumbo bag 1.400-1500kg 0.40 €/Kg

Polymer

PET polyethylene terephthalate

Recycled SRM /Regrinded / Industrial By-Product / Industrial compound QUALITY-RECYCLED QUALITY-RECYCLED

GRANULO REPRO VERDE
cylindrical granule/pellet Green 26000.0 Kg bigbag 1.000-1.100 kg 0.78 €/Kg

Polymer

PET polyethylene terephthalate

Recycled SRM /Regrinded / Industrial By-Product / Industrial compound QUALITY-RECYCLED QUALITY-RECYCLED

PET PREFORME
regrinded transparent bluish 75000 Kg bags on pallet 0.78 €/Kg

Polymer

PET polyethylene terephthalate

Recycled SRM /Regrinded / Industrial By-Product / Industrial compound QUALITY-RECYCLED QUALITY-RECYCLED

-
regrinded transparent bluish 200000 Kg bags on pallet 0.75 €/Kg

Polymer

PET polyethylene terephthalate

Recycled SRM /Regrinded / Industrial By-Product / Industrial compound QUALITY-RECYCLED QUALITY-RECYCLED

R-PET FLAKES
regrinded transparent bluish 22000 Kg bigbag 1.000-1.100 kg 0.98 €/Kg
 

Compound

PET-GF30 polyethylene terephthalate

Rynite 530HTE NC010

2800 Kg 1.10 €/Kg

Polymer

PET-G glycol modified polyethylene terephthalate PETG

PETG NERO RIGENERATO

300000 Kg 0.98 €/Kg

Polymer

PET polyethylene terephthalate

VINAPET G080A

60000 Kg 1.60 €/Kg

Polymer

PET polyethylene terephthalate

PET RESIN 31W56/W

60000 Kg 1.60 €/Kg

Polymer

PET polyethylene terephthalate

PET RESIN 31W56/W

60000 Kg 1.60 €/Kg

Polymer

PET polyethylene terephthalate

PET MACINATO

15000 Kg 0.79 €/Kg

Polymer

PET polyethylene terephthalate

POLYMER - PET R-PET FLAKES RECYCLED /REGRINDED FLAKES- BROWN COLOR

200000 Kg 0.67 €/Kg

Polymer

PET polyethylene terephthalate

GRANULO REPRO VERDE

1200 Kg 0.78 €/Kg

Polymer

PET polyethylene terephthalate

LASTRA MACINATA CLEAR PET/PE

26000 Kg 0.35 €/Kg

Polymer

PET polyethylene terephthalate

NEOPET 80

24000 Kg 1.25 €/Kg

Polymer

PET polyethylene terephthalate

COREPET

23700 Kg 0.40 €/Kg

Polymer

PET polyethylene terephthalate

GRANULO REPRO VERDE

26000.0 Kg 0.78 €/Kg

Polymer

PET polyethylene terephthalate

PET PREFORME

75000 Kg 0.78 €/Kg

Polymer

PET polyethylene terephthalate

200000 Kg 0.75 €/Kg

Polymer

PET polyethylene terephthalate

R-PET FLAKES

22000 Kg 0.98 €/Kg