PET competitive advantages

PET is tough and strong

Modulus of Elasticity
(Slope of The Elastic Region)
Tensile Strength
PET (Oriented) 500.000 psi 62 MPa
PVC 450.000 psi 58 MPa
PC 320.000 psi 65 MPa
PP 190.000 psi 34 MPa
HDPE 120.000 psi 15 MPa
PET (amorphous) 120.000 psi  
LDPE 30.000 psi  

PET is impact resistant

Impact Energy  
PET (Oriented) 360 KJ/m²
PET (amorphous) 35 KJ/m²

PET has good barrier properties

Oxygen transmission rate cc (STP)* mil/100in² *day* atm at 25°C

PET (Oriented) 4.3
PET (amorphous) 8
HDPE 100
PP 150
PC 200

PET is chemical resistant

Up to 30% sulfuric acid

Up to 10% hydrochloric, nitric, phosphoric, acetic acid

There are, however, certain chemicals which may attack PET either chemically to cause loss of clarity or dissolution or physically to cause stress cracking.

Sodium hydroxide, THF, benzene

PET is chemically inert

In other words, it does not react and does not transfer its constituents to the content.

"PET fully complies with the requirements of the
EU food law

EU Regulation No. 10/11 relating to plastics materials and articles intended to come into contact with food stuff.

EU food law requirements on PET bottles

  Indicative analytical results by an external accredited laboratory
Overall migration limit 60 mg/kg foot
10 mg/dm² contact
< 6 mg/kg food
< 1 mg/dm² contact
Specific migration limit PTA 7,5 mg/kg food
PIA 5 mg/kg food
< 0,2 mg/kg food
EG + DEG 30 mg/kg food < 12 mg/kg food
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