PTFE Fabrics (heat-sealing fabrics)

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Overview
Performance Characteristics
Typical Applications
Typical Properties
Overview
PTFE fabrics, or heat sealing fabrics, consist of a woven fiberglass and are coated with a PTFE resin. They are extremely resistant to high temperatures, contain outstanding electrical properties, have excellent release surfaces and superior chemical resistance.

PTFE fabrics come in a variety of grades such as standard grade, premium grade, mechanical grade, porous grade, anti-static grade, and tear and crease resistant grade.

  • Standard grade PTFE fabric
    Standard grade PTFE fabric provides a smooth surface and has excellent non-stick properties.
  • Premium grade PTFE fabric
    Premium grade is super smooth, which gives it an extremely slick, non-porous surface.
  • Mechanical grade PTFE fabric
    Mechanical grade PTFE fabric has a special treated glass thread that is required for various mechanical low-load applications.
  • Anti-static grade PTFE fabric
    Anti-static grade PTFE fabric provides an anti-static surface with electrically conductive characteristics.
  • Porous grade PTFE fabric
    Porous grade PTFE fabric has a porosity range from breathing up to ¼ inch mesh and is used to allow escape of gases and air.
  • Tear and Crease resistant grade PTFE fabric
    Tear and crease resistant grade PTFE fabric can withstand heavy usage and resists tearing, folding, and creasing.

PTFE Fabric Standard Packaging

LENGTHS 18 or 36 yds
WIDTHS Slit to required size

  • Length, width, and thickness tolerances may vary by manufacturer.
  • Fabric may be available in various colors.
  • Minimums may apply to certain materials.

PTFE Fabric Grades

  • 380 Premium grade, extra heavy PTFE coating
  • 381 Standard grade, heavy PTFE coating
  • 382 Mechanical grade, medium PTFE coating
  • 384 Porous grade
  • 385 Anti-static grade
  • 368 Tear and crease resistant grade

NOTE: Several other grades are available. For additional information on PTFE fabrics or heat sealing fabrics, contact your local Curbell Plastics representative or call Curbell at 1-888-287-2355.
Performance Characteristics
  • Excellent release surface
  • Superior chemical resistance
  • Outstanding electrical properties
  • Extreme temperature resistance
  • High tensile strength
Typical Applications
  • Plastic bags and films
  • Heat sealing
  • Replacing stainless steel and aluminum screening
  • Manufacturing dress shirts and blouses
  • Thermal insulation
  • Conveyor belts
  • Gaskets, seals, and bearing liners
Typical Properties

Premium Grade 380 PTFE Fabric [PTFE Coating]

PROPERTY UNITS 380-3 380-5 380-6 380-10 380-14
Color Tan Tan Tan Tan Tan
Nominal thickness inches 0.0032 0.0054 0.0064 0.0064 0.0158
Nominal weight lb/yd2 0.32 0.53 0.64 0.64 1.57
Nominal yield yd2/lb 3.13 1.89 1.56 1.56 0.64
Nominal breaking strength - Warp lbs/inch 90 180 180 180 450
Nominal breaking strength - Fill lbs/inch 80 180 180 180 350
Nominal edge tear - warp g 900 1,200 1,100 1,100 1,400
Nominal edge tear - fill g 500 1,200 1,000 1,000 3,300
Surface resistance 0 Ω N/A N/A N/A N/A N/A
Dielectric strength V/total 3,200 5,600 7,040 7,040 300
Operating temperature °F -100°-500° -100°-500° -100°-500° -100°-500° -100°-500°
Actual wear will vary according to individual applications. Please call your Curbell Plastics sales representative for more information.
* Values shown are typical

Standard Grade 381 PTFE Fabric [Heavy PTFE Coating]

PROPERTY UNITS 381-3 381-4 381-5 381-6 381-10 381-14
Color Tan Tan Tan Tan Tan Tan
Nominal thickness inches 0.0030 0.0037 0.0052 0.0058 0.0088 0.0135
Nominal weight lb/yd2 0.27 0.34 0.49 0.57 0.88 1.30
Nominal yield yd2/lb 3.70 2.94 2.03 1.75 1.14 0.77
Nominal breaking strength - warp lbs/inch 90 150 180 180 250 450
Nominal breaking strength - fill lbs/inch 80 90 180 180 200 350
Nominal edge tear - warp g 900 N/A 1,400 1,200 1,400 5,000
Nominal edge tear - fill g 500 N/A 1,200 1,100 2,000 4,000
Surface resistance 0 Ω 1,012 1,012 1,012 1,012 1,012 1,012
Dielectric strength V/total 2,400 2,220 3,640 5,220 300 6,750
Operating temperature °F -100°-500° -100°-500° -100°-500° -100°-500° -100°-500° -100°-500°
* Values shown are typical

Mechanical Grade 382 PTFE Fabric [Medium PTFE Coating]

PROPERTY UNITS 382-3 382-5 382-10 382-17 382-22 382-24
Color Tan Tan Tan Tan Tan Tan
Nominal thickness inches 0.0028 0.0048 0.0048 0.0125 0.0193 0.0240
Nominal weight lb/yd2 0.23 0.38 0.38 1.11 1.66 1.72
Nominal yield yd2/lb 4.35 2.63 2.63 0.90 0.60 0.58
Nominal breaking strength - warp lbs/inch 90 180 180 450 600 475
Nominal breaking strength - fill lbs/inch 80 180 180 350 400 N/A
Nominal edge tear - warp g 900 1,900 1,900 6,000 N/A N/A
Nominal edge tear - fill g 500 2,000 2,000 5,000 N/A N/A
Surface resistance 0 Ω N/A N/A N/A N/A N/A N/A
Dielectric strength V/total N/A N/A N/A N/A N/A N/A
Operating temperature °F -100°-500° -100°-500° -100°-500° -100°-500° -100°-500° -100°-500°
* Values shown are typical

Porous Grade 384 PTFE Fabric

PROPERTY UNITS 384-3 384-5 384-8 384-10 384-14 384-22
Color Tan Tan Tan Tan Tan Tan
Nominal thickness inches 0.0025 0.0048 0.0076 0.0125 0.0193 0.0193
Nominal weight lb/yd2 0.14 0.27 0.45 0.58 0.72 0.72
Nominal yield yd2/lb 7.14 3.70 2.22 1.72 1.39 1.39
Nominal breaking strength - warp lbs/inch 90 180 250 250 450 450
Nominal breaking strength - fill lbs/inch 80 180 200 200 350 350
Nominal edge tear - warp g N/A N/A N/A N/A N/A N/A
Nominal edge tear - fill g N/A N/A N/A N/A N/A N/A
Surface resistance 0 Ω N/A N/A N/A N/A N/A N/A
Dielectric strength V/total N/A N/A N/A N/A N/A N/A
Operating temperature °F -100°-500° -100°-500° -100°-500° -100°-500° -100°-500° -100°-500°
* Values shown are typical

Anti-Static Grade 385 PTFE Fabric

PROPERTY UNITS 385-3C 385-5C 385-6C 385-10C
Color Black Black Black Black
Nominal thickness inches 0.0030 0.0050 0.0055 0.010
Nominal weight lb/yd2 0.27 N/A N/A 0.87
Nominal yield yd2/lb N/A N/A N/A N/A
Nominal breaking strength - warp lbs/inch 70 120 125 200
Nominal breaking strength - fill lbs/inch 50 100 160 150
Nominal edge tear - warp g N/A N/A N/A N/A
Nominal edge tear - fill g N/A N/A N/A N/A
Surface resistance 0 Ω N/A N/A N/A N/A
Dielectric strength V/total N/A N/A N/A N/A
Operating temperature °F -100°-500° -100°-500° -100°-500° -100°-500°
* Values shown are typical

Tear and Crease Resistant Grade 368 PTFE Fabric

PROPERTY UNITS 368-3 368-5 368-6 368-24
Color Tan Tan Tan Tan
Nominal thickness inches 0.0029 0.0050 0.0057 0.0209
Nominal weight lb/yd2 0.26 0.45 0.54 1.41
Nominal yield yd2/lb 3.85 2.22 1.85 0.71
Nominal breaking strength - warp lbs/inch 90 170 170 500
Nominal breaking strength - fill lbs/inch 80 160 160 400
Nominal edge tear - warp g 1,800 2,500 2,000 N/A
Nominal edge tear - fill g 1,200 2,300 1,900 N/A
Surface resistance 0 Ω N/A N/A N/A N/A
Dielectric strength V/total N/A N/A N/A N/A
Operating temperature °F -100°-500° -100°-500° -100°-500° -100°-500°
* Values shown are typical
NEED MORE INFORMATION?
Contact Curbell Plastics at 1-888-287-2355 for more specific information about PTFE fabrics or complete our request for quote online form.