Polyester Film / PET Film

PET Film

Filmquest is a leading supplier and converter of polyester (PET) film.

Filmquest converts, coats, and metalizes all grades of PET film, supplying PET film in slit-to-width rolls, cut sheets, and fabricated components. Filmquest’s extensive production/converting capacity makes lead times far shorter than polyester film manufacturers with competitive pricing.

Filmquest’s Questar® brand PET film is available in thicknesses from 25 to 1400 gauge and in a range of clarity levels that can also be supplied with a variety of surface treatments.

  • Full range of material clarity grades
    • A – Super Clear / Ultra Clear
    • B – Clear
    • C – Medium Haze
    • D – Heavy Haze
    • E – Translucent White
    • F – Opaque White
    • H – Matte
    • I – Black
    • J – Colored
  • Plain or treated (1-side / 2-side)
    • Corona
    • Chemical
    • Anti-static
    • PVdC
    • UV
    • Many more treatments available
  • Special properties
    • Stabilized
    • Balanced
    • Low shrink
    • Tensilized
  • Converted to customer roll specifications
    • Master roll / Mill roll
    • Standard roll lengths / ODS
    • Custom slit rolls
    • Narrow slit rolls

What is PET Film?

Polyester film is often referred to by its abbreviation, PET film. The chemical name for this type of plastic is polyethylene terephthalate, which is commonly shortened to PET. It is a versatile and robust plastic in film form of various thicknesses, widths and transparencies. It has physical, mechanical, optical, thermal, electrical and chemical properties that make it suitable for many applications. PET film is one of many types of plastic film.

PET Film Technical Information

Polyester film from Filmquest has various technical properties as described in the specification tables below.

Physical and Thermal Properties

PropertyTypical ValueUnitTest Method
Gauge & Type End UseCI-100/92 Gauge Industrial Specialties--
Ultimate Tensile Strength, MD28,000psiASTM D 882
TD34,000psiASTM D 882
Strength at 5% Elongation,
MD15,000psiASTM D 882
(F-5), TD14,000psiASTM D 882
Modulus, MD710,000psiASTM D 882
TD740,000psiASTM D 882
Elongation, MD110%ASTM D 882
TD90%ASTM D 882
Surface Roughness38nmOptical Profilometer
Density1.39g/ccASTM D 1505
Viscosity0.56dL/gASTM D 4603
Melt Point254CDifferential Scanning Calorimeter
Dimensional Stability
at 105 C MD0.6%Lab
at 150 C MD1.8%Lab
Specific Heat0.28cal/g/ C-
Coefficients of
Thermal Expansion
Thermal Conductivity
(Questar 1000 ga.)
1.7 x 1010-5
3.7 x 1010-4
in/in/C cal.cm
cm2/sec/ C
ASTM D 696
30 C-50 C
25 C-75 C
UL 94 Flame Class94 VTM-2Slow to self-extinguishing-

The information contained here in is provided by Filmquest free of charge. It is based upon technical data that Filmquest believes to be reliable and is intended for use by persons having knowledge of this technical area at their own discretion and risk. Filmquest assumes no responsibility for results obtained or damages incurred from the use of this information either in whole or in part by a buyer of Questar™ polyester film.

Electrical Properties

PropertyTypical ValueUnitTest Method
Dielectric Strength
AC, 25 C, 92 gauge
7,000volts/milASTM D149-64
Dielectric Constant 25 C, 1 kHz3.2-ASTM D150-81
Dissipation Factor 25 C, 1 kHz0.005-ASTM D150-65
Volume Resistivity 25 C,1 kHz1018ohm-cmASTM D250-78
Surface Resistivity 23 C, 30% Relative Humidity1016ohm/squareASTM D257-78
Corona Threshold
Voltage, 92 gauge
425V-ACASTM D2275-80

Questar® Polyester Film Safety Data Sheet (SDS)

Filmquest provides this Safety Data Sheet (SDS) for Questar® brand polyester film.

Questar® Polyester Film Technical Data Sheets (TDS)

Filmquest provides these technical data sheets for its most popular Questar® brand polyester film products. Contact Filmquest via sales@petfilm.com for other TDS requests.

ISO Compliant and FDA approved

Questar® brand polyester film is ISO compliant and U.S. Food and Drug Administration (FDA) approved. Certificates of Analysis are available upon request.

Certified Kosher PET Film

Questar® brand CP Series polyester film is certified by EarthKosher, valid for 2021, renewed on January 14, 2021. View certificate

Why Choose Filmquest for PET Film?

Customers choose Filmquest for polyester film because of:

  • Complete range of Questar® polyester film grades
  • Custom fabricated components
  • Complete slitting
  • Simple order entry via telephone, fax or email
  • Rolls: any width, any configuration with precision slitting
  • Clean room environment
  • Competitive prices
  • Fast lead times