Vacuum Bagging Bleeder Cloths

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Vacuum Bagging Bleeder Cloths

Vacuum Bagging Bleeder Cloths, used for Aircraft composites manufacturing

Vacuum Bagging Bleeder Cloths, make of PTFE coated fiberglass fabric with low level of PTFE content, which has a higher porosity than normal PTFE coated fabric. In this case, air and extra resin will be allowed for passing through the bleeder cloths. This fabric is used as release sheet and bleeder cloth, for the manufacturing of aircraft composites, including satcom and weather radomes, helicopter rotor blade, structural components like wings, tail section, fuselage component and so on.


Vacuum bagging bleeder cloths

Vacuum bagging bleeder cloths


How to use Vacuum bagging bleeder cloths



Porous PTFE Fabric

Porous PTFE Fabric


Click here to access the Porous PTFE Sheet YS9006P 


Vacuum bagging system is consist of vacuum bag, ventilated felt, cover, isolating membrane, bleeder, bleeder cloth(Porous PTFE fabric), composite, PTFE adhesive fabric and molding.

After extracting vacuum, autoclave molding will release high temperature, high pressure by adding heat compression air, for the curing and molding of the composite. And ESONE PTFE coated fabric will provide a easy and clean release after curing process, air, resin and volatile will be allowed for escaping.

The surface of composite will be excellent smooth by using Vacuum bagging bleeder cloths, and composite will be very easy to peeled off from the PTFE peel ply after cured.


Property of PTFE coated Peel Ply


  Easy release and non stick.

Composite will be easy and clean released from bleeder cloths.


  Allowing air, resin and volatile escaping during curing

PTFE Peel Ply has a higher porosity than normal PTFE coated fabric, which can allow air, resin and volatile pass through in the curing process.


  Create super smooth surface for composite

After release, the composite will have a excellent smooth and shiny surface, such as bonnet of automotive.


  Strong mechanical strength

Vacuum bagging bleeder cloths has high tensile strength, which can resist the high pressure in autoclave. And cloth will not be tore when releasing the peel ply.


In these applications, the release property, mechanical strength and porosity of Vacuum bagging bleeder cloths is critical to the manufacturing process and the quality of the composites.


Porous Teflon Sheet

Porous Teflon Sheet


Specification of PTFE Bleeder Cloth


ProductProduct CategoryCoating


Standard width
Please ask for other widths
1000 mm39.5 inches
Thickness0.06 mm0.0024 inches
Coated weight66 g/m² 1.95 oz/yd²
PTFE content27 %27 %
Porosity20-100 cfm20-100 cfm
Tensile strength160 N/cm Warp91.5 lbs/inches Warp
146 N/cm Fill83.5 lbs/inches Warp
Temperature resistance-73 to +260 °C-100 to +500 °F

Technical data sheet of Bleeder Cloth, YS9006P-ESONE

Related product like Non porous release sheet YS9007AJ-ESONEYS9008AJ-ESONE
Or PTFE adhesive fabric for mold release YS7007AT-ESONEYS7013AT-ESONE
PTFE Film adhesive tape for sealing YS7913-ESONE


  1. Steven 2017年8月15日 at am8:41 - Reply

    Vacuum bagging is a common way of producing composite material, and the molding for aircraft composite or wind blade composite is normally decade meters, so PTFE fabric must be no defect, has excellent non stick surface and high mechanical strength

  2. Jack 2018年7月28日 at am7:12 - Reply

    What is the difference between PTFE bleeder cloth and normal peel ply?

    • Ms. PTFE 2018年7月28日 at am9:27 - Reply

      Hi Jack, thanks for your comment!
      PTFE bleeder cloth can resist heat to 500F, the surface is non stick so the release will be very easy.
      However, the nylon peel ply can’t resist heat and surface is not best for release.

  3. nic tungatoa 2019年9月15日 at pm3:11 - Reply

    hello there, can this product be used with vacuum infusion?

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