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GORE™ High Durability Filter Bags blend chemically inert expanded polytetrafluoroethylene (ePTFE) with rugged polyimide fibers.

Content Type
Data Sheets
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Data Sheet: Polyimide/ePTFE Felt GORE® Filter Bag 830 g/m2 (24.5 oz/yd2)
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Features and Benefits
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Key Features Key Benefits
System Analysis Optimized Performance
Technical Support Reduced Support Cost
Lab Services High Operating Temperature
Installation Expertise Higher Acid Resistance
GORETM High Durability Membrane Technology Reduced Risks of Downtime
Polyimide/ePTFE Blended Backer Longer Life than Aramids
High Strength ePTFE scrim  
Blended For Versatility in Aggressive Environments.
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GORE™ High Durability Filter Bags blend chemically inert expanded polytetrafluoroethylene (ePTFE) with rugged polyimide fibers. This hybrid offers significant performance increases over aramid felts both in mechanical endurance and chemical resistance. It provides product recovery and emissions control unequalled by nonmembrane filters.

The polyimide/ePTFE blend provides better humidity and chemical protection compared to aramid and polyphenylensulfide (PPS) felts. Additionally, its temperature range goes all the way to 260 °C (500 °F). This capability means much better protection against process upsets due to temperature fluctuations. An additional benefit of the blend is its higher resistance to acids compared to aramid fibers. The enhanced performance of the polyimide/ePTFE backer is very effective for applications requiring more chemical and thermal endurance than traditional felts made with aramid or PPS fibers.

Enhanced Scrim Increases Breaking Strength
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A woven ePTFE supporting scrim further improves durability and breaking strength. By bracing the filter in the face of repeated cleaning pulses, it provides greater dimensional stability and reduces fatigue and wear.

Better Value than Aramids and PPS
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GORE™ High Durability Filter Bags with blended backer offers greater price/performance value than their aramid or PPS counterparts. Their higher temperature range maintains the integrity of the felt structure, minimizing brittleness and membrane cracking. They last longer even under the damaging effects of hydrolysis and acids. That means fewer bag changeouts and greater savings over time – all of which have a positive impact on your company’s profit.

Next Generation GORE™ Membrane
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The unique structure of the new GORE™ membrane allows it to outlast standard membranes.

Weight 830 g/m2 (24.5 oz/yd2)

Fiber content

Staple – Expanded Polytetrafluoroethylene and Polyimide Staple Fiber

Scrim – Woven Expanded Polytetrafluoroethylene

Felt Construction

Supported needlefelt

Continuous operating temperature

260°C (500°F)

Maximum surge temperature

274°C (525°F)

Acid resistance

High

Alkali resistance

High

Breaking strength

 

- Machine direction

890 N/5 cm (200 lb/2 in) wide sample

- Cross-machine direction

668 N/5 cm (150 lb/2 in) wide sample

Mullen burst

3825 kPa (550 psi)

Thickness

0.89 mm (0.035 in)

Thermal stability

< 2% shrinkage at 260°C (500°F) after 2 hours (unrestrained)

Durability

High

Laminate Technical Data
Column Item

Industrial Use Only - US

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FOR INDUSTRIAL USE ONLY

Not for use in food, drug, cosmetic or medical device manufacturing, processing, or packaging operations.

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GORE Filter Bags Polymide ePTFE Felt
Content Language
English
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