High efficiency particulate air rated vacuum bag media and an associated method of production

A vacuum bag comprising a closed receptacle for collecting dirt particles and having an inlet opening for allowing a dirt laden airstream to enter, said receptacle formed from a composite sheet comprised of at least one layer of expanded polytetraflouroethylene and at least one substrate layer, said at least one substrate layer comprising a first material and a second material, said first material comprising a plurality of bicomponent fibers with a first portion having a first melting point and a second portion having a second melting point that is higher than the first melting point, said second material having a third melting point that is higher than the first melting point, wherein the first material and the second material are blended together and the first portion of the bicomponent fibers is at least partially melted to attach said at least one layer of expanded polytetraflouroethylene to said at least one substrate layer.

A vacuum bag media comprising:

• a first layer that includes an expanded polytetrafluoroethylene membrane for surface filtration;
• and
• at least one second layer, having a first side and a second side, and comprising a first material and a second material, said first material comprising a plurality of bicomponent fibers comprising a first portion having a first melting point and a second portion having a second melting point that is higher than the first melting point, wherein the first material is in contact with said first layer and a said second material of the second layer, and the first portion of the bicomponent fibers is melted to attach the first layer to the first side of the at least one second layer.