| 摘要 |
A filter composite comprising a first layer of glass fibers having random orientation, the layer being porous to gas flow therethrough; a porous mat of sufficient stiffness as to support the glass fiber layer during use as a filter, the mat consisting of compacted glass fibers, and; an additional porous layer carried by the mat to block escape of glass fibers or particles from the filter composite during gas flow therethrough. The first layer fibers have diameters between about 0.000035 and 0.00015 inch. |
