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TFM GBK Lining Sheet

In addition to conventional PTFE its substantially improved property profile includes:

Better weldability. Denser polymer structure with reduced permeability. Substantially lower deformation under load. High degree of purity. Therefore, TFM is very suitable for semi-conductor

industry. Smooth and pore-free surface that prevent contaminates being

trapped and thus make cleaning TFM sheet surface considerably easier.

Substantially fewer cleaning cycles of TFM due to optimized surface properties compare to conventional PTFE.

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Reduced permeation:

*According to DIN 53380. film thickness 1mm.

Cm3

M 2 x d x bar Permeation of chemicals through A 1mm film test film made from TFM is much lower than through A film made from PTFE.

Skived Film under an optical microscope at 25X magnification: The denser polymer structure of TFM is apparent under the microscope.

Laser surface profilometry – Surface roughness of fluoropolymer:

Conventional PTFE :

The original particle boundaries are

clearly discernible after the sintering

process.

TFM:

The original particle boundaries are no

longer discernible because of better fusion

between particles.

PTFE sheet TFM sheet

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Surface roughness of machined parts: (50:1 magnification)

Specifications:

Nominal Size TFM sheet Thickness

(mm)

Total thickness

(mm) Width (mm)

Weight

(Kg/ML)

2.5 mm 2.5 2.8 1,200 6.87

3 mm 3 3.3 1,200 8.29

Physical properties:

Item Unit Test method TFM sheet

Density C/cm3 ASTM 1457 2.16 – 2.19

Tensile strength Kgf/cm2

N/mm2ASTM 1457

326

32

Elongation at break % ASTM 1457 650

Welding Material:

Resource: 1.Above data are excerpted from Dyneon TFM brochure.

2. TFM is registered trademark of Dyneon

3. PFA 451HP is a product name of Dupont.

Item PFA 451HP rod PFA 451HP cap strip

Dimension (mm) 3ψ 3.4ψ 4ψ 5ψ 14w×2.5t 14.7w×2.7t

Roll length 100M/Roll 50M/Roll

Weight (g/M) 15.2 19.4 26.8 41.9 74.9 84.7

Note the rougher surface of machined parts

made from conventional PTFE.

The much smoother surface of TFM part can

be clearly seen under the microscope.