Bleeders and breathers Non woven breather and bleeder felts made of polyester fibres. These are recommended for the moulding of elaborate forms. Contact us for specific non woven products : weight, size, packaging… Product Max. Temp. weight Width Length Elongation Pressure Type PES150 205°C 150 g/m² 1,55 to 3,5 m 100 m Very good 3 bars polyester PES340 205°C 340 g/m² 1,55 to 3,5 m 100 m Good 7 bars polyester PES680 205°C 680 g/m² 1,5 / 3 m 100 m Average > 9 bars polyester