Non-Metallic Expansion Joints

Type TLFP
Multi-Directional PTFE Films

Thorburn's Flexi-Duct Gas Seal Membrane absorbs thermal growth and movements of a ducting system while containing internal pressures and media.

TLFP Formidable Corrosion Barrier

Chemically Inert
Made from 100% PTFE resins
No glass or other reinforcement
Wet / Dry service
Zero permeability, Zero Porosity

TLFP Unprecedented Mechanical Properties

Flexing (4.5 million cycles)
Fatigue resistance 600°F (316.5°C)
360° Tear Resistance

Breaking Strength (50mm Specimen)

TLFP 60
Tensile: 2788 N (312 lbs/in)
Tear: 1248 N (275 lbs/in)
Weight: 3493 g/m2 (103 oz/yd2)

TLFP 40
Tensile: 1357 Kpa (197 PSI)
Tear: 1894 Kpa (275 PSI)
Weight: ??? g/m2 (??oz/yd2)

TLFP 20
Tensile: 788 N (87 lbs/in)
Tear: 295 N (65 lbs/in)
Weight: 984 g/m2 (29 oz/yd2)

 
Exceptional Flexing Performance


Type TLFP Film, 1995 winner of
Chemical Processing Vaaler Award
and Dupont Plunket Award


TLFP Provides a formidable corrosion barrier


The flex machine test

Thorburn's TLFP is virtually impervious to flexing

Cold Bend Test -90°F (-67.8°C)

A. Unidirectional Laminated PTFE
B. Thorburn TLFP


Hot Bend Test 600°F (316°C)

A. Thorburn TLFP
B. Unidirectional Laminated PTFE


Flex Cycles to Failure for Perflouroplastic Products

In accordance with international standard ISO 7584-1984 (E) Rubber or Plastic Coated Fabrics - Determination of resistance to damage by flexing (dynamic method)

Hours to failure in Flex Tester at 3,600 cycles/hour
The flex machine exposed test specimens to a 25lbs/inch load at a cycle rate of 1 cycle per second and a bending movement of 120°

One Cycle
Load Used: 25 lbs/inch


TLFP provides a formidable corrosion barrier
for fume collection systems on the Pot Lines Scrubber

Throburn's TLFP 40 consists solely of PTFE resins and is therefore chemically inert and completely unaffected by hydrofluoric gases making it an ideal gas seal membrane in a Aluminum Potline and Scrubber Ducting System.


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