Flexible Biogas Digester Bag Fabric

Flexible Biogas Digester Bag Fabric

The biogas digester fabric is transformed into various shapes and sizes of biogas fermentation equipment for collecting and processing human and animal feces, sewage, and other materials.

Product Detail

Product Tags

Product Informations

Biogas digester fabric is made of high-strength industrial polyester fibers and PVC membranes through the laminating process. Due to the composition of red mud, it has the characteristics of being more weather-resistant, UV-resistant, flame-retardant, weather-resistant, and low-temperature resistant than ordinary PVC biogas digesters. In general, it is better suited for use in areas with a large temperature difference between day and night.

 Product Parameters

Biogas Bag Fabric Technical Specification
Item Unit Model Executive Standard
ZQ70 ZQ90 ZQ120 SCYY90
Base fabric Denier High strength low shrink polyester fiber DIN EN 60001
Color - Red mud, Blue, Army green, White -
Thickness mm 0.7 0.9 1.2 0.9 -
Width mm 2100 2100 2100 2100 -
Tensile strength (warp/weft) N/5cm 2700/2550 3500/3400 3800/3700 4500/4300 DIN 53354
Tear strength (warp/weft) N 350/300 450/400 550/450 420/410 DIN53363
Adhesion strength N/5cm 100 100 120 100 DIN53357
UV protection - Yes -
Threshold Temperature -25~60 DIN EN 1876-2
Acid and alkali corrosion resistance 672h Appearance no blistering, cracks, delamination and holes FZ/T01008-2008
Tensile load retention rate ≥90%
Cold resistance (-25℃) No cracks on the surface
The above values are average for reference, allowing 10% tolerance. Customization is acceptable for all given values.

 Product Feature

◈ Anti-aging
◈ UV protection
◈ High pressure resistance
◈ Excellent airtightness
◈ Strong weather resistance
◈ Excellent heat absorption
◈ Fire resistance
◈ Long life span
◈ Setup is simple
◈ All characters can be customized to fit the needs of the various user environments

Product Advantages

Foresight has more than 15 years of experience in the production of red mud biogas fabric, a strong scientific research team, more than ten engineering and technical personnel graduated from professional colleges, and more than 30 high-speed rapier looms to meet various needs. with an annual output of more than 10,000 tons of various types of calendered films and an annual output of more than 15 million square meters of fabrics.


From raw materials such as fiber and resin powder to PVC flexible fabric, Foresight has a complete industrial chain.The system has obvious advantages. The production process is controlled layer by layer and comprehensively balances all key indicators, which can be customized according to the customer’s requirements in different environments. We are committed to providing users with the safest and most cost-effective solutions.

The red mud biogas digester fabric adopts red mud material, which has better UV-resistant, light-resistant, anti-corrosion, and anti-oxidation performance than ordinary biogas fabric. It is suitable for areas with a large temperature difference between day and night and strong outdoor UV when using biogas digesters. It has good weather resistance and extends the life of biogas digesters by 5–10 years.


The red mud biogas digester fabric is light in weight and easy to transport. The cost is at least 50% less than that of the traditional brick-concrete biogas tank and FRP biogas tank.

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