ECTFE Halar® Film

Halar ® ECTFE provides excellent chemical resistance, good electrical properties, a broad-use temperature range from cryogenic to 300°F (150°C), and meets the requirements of UL-94 V-0 vertical flame test in thicknesses as low as 7 mils (0.18 mm). It is a tough material with excellent impact strength and wear resistance. Halar® 300 resin. 

Applications for  ECTFE (Halar®) Film: • Filters • Diaphragms • Release films  • Cable insulation • Solar collector panels • Coaxial and fiber optic wrap film  • Medical bags

Advantages of ECTFE (Halar®) Film: •  Excellent purity •  Excellent chemical resistance •  Low permeability •  Excellent abrasion resistance •  Excellent temperature resistance

 

Also available as mini-cord  (Weldable, mini sizes- 1/16" to 1/4" Diameter) Click Here

 

GENERAL INFORMATION:

 

Adhesive Bonding:

ECTFE (Halar®)  can be adhesive laminated to variety of plastic film and

metal substrates with bond strengths ranging from 52-800 psi and under

harsh chemical environments.  Epoxy adhesives are useful for bonding ECTFE

Halar. The strength of the bond can be greatly increased if the surface is first

etched with sodium, flame treated, plasma, or fluorine gas treated.

Lap shear strength, HALAR® resin/HALAR resin joint, ³/4' x 1" joint area.

1. Etchant and procedure identical to that commonly used on PTFE. Specific etchant used was Tetra-Etch supplied by W.L. Gore Co. Etching time was 1-2 minutes.
2. Brushed with propane torch for 15-30 seconds. (Let tip of flame touch the surface. Move flame just rapidly enough to avoid charring and/or warping).
3. Rated good for 300°F (149°C) continuous service temperature by its vendor.
4. Exceeded the yield strength of the 90-mil HALAR® resin used in the joint.

Thermoforming ECTFE (Halar®): Typical thermoforming equipment utilizes infrared heating sources or convection ovens. Heat the film until it becomes transparent. Exact temperatures for convection ovens vary: a starting point is 530°F. Immediately apply vacuum pressure to the film. Hold the film in place until completely cooled. Some shapes may require heating of the mold or tools to prevent cracking or tearing of the film.

Heating requirements are considerably lower for pressure forming. A temperature range of 300°F to 375°F is a good starting range. The mass, heat capacity and temperature of the molds have a great effect on temperature requirements. Form the film and hold in place until cool.

Permeability To Gases:    Low permeability to water vapor and various other gases.

Heat Sealing:    ECTFE (Halar®) film can be sealed by thermal impulse, rotary band & hot bar.  Approximate hot bar sealing conditions=475F to 500F with 1-2 seconds.

Data Sheet - Halar® Film